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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Curceanu%2C+C&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Curceanu%2C+C&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Curceanu%2C+C&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.11294">arXiv:2410.11294</a> <span> [<a href="https://arxiv.org/pdf/2410.11294">pdf</a>, <a href="https://arxiv.org/format/2410.11294">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.3390/s24237562">10.3390/s24237562 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First Linearity and Stability Characterization for CZT Detection System in a e$^+$e$^-$ Collider Environment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbene%2C+L">Leonardo Abbene</a>, <a href="/search/physics?searchtype=author&query=Artibani%2C+F">Francesco Artibani</a>, <a href="/search/physics?searchtype=author&query=Bettelli%2C+M">Manuele Bettelli</a>, <a href="/search/physics?searchtype=author&query=Buttacavoli%2C+A">Antonino Buttacavoli</a>, <a href="/search/physics?searchtype=author&query=Principato%2C+F">Fabio Principato</a>, <a href="/search/physics?searchtype=author&query=Zappettini%2C+A">Andrea Zappettini</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">Massimiliano Bazzi</a>, <a href="/search/physics?searchtype=author&query=Borghi%2C+G">Giacomo Borghi</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">Mario Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">Michael Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">Marco Carminati</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">Alberto Clozza</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+F">Francesco Clozza</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">Luca De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">Raffaele Del Grande</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">Kamil Dulski</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">Laura Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">Carlo Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">Carlo Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">Mihail Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">Masahiko Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">Aleksander Khreptak</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">Simone Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">Johann Marton</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">Pawel Moskal</a> , et al. (18 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.11294v2-abstract-short" style="display: inline;"> The SIDDHARTA-2 collaboration built a new cadmium-zinc-telluride (CZT, CdZnTe)-based X-ray detection system, used for the first time in the DA$桅$NE electron-positron collider at INFN-LNF. The aim of this work is to show that these detectors present optimal long- and short-term linearity and stability to perform precise spectroscopic measurements in a collider environment. The spectra used as refer… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.11294v2-abstract-full').style.display = 'inline'; document.getElementById('2410.11294v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.11294v2-abstract-full" style="display: none;"> The SIDDHARTA-2 collaboration built a new cadmium-zinc-telluride (CZT, CdZnTe)-based X-ray detection system, used for the first time in the DA$桅$NE electron-positron collider at INFN-LNF. The aim of this work is to show that these detectors present optimal long- and short-term linearity and stability to perform precise spectroscopic measurements in a collider environment. The spectra used as references for calibration are reported, and the results about the linearity and stability studies are presented. It is also discussed and showed what is the proper function to describe all the effects that alter the Gaussian shape in semiconductors, particularly evident in the CZT case. Good residuals and resolutions were obtained for all the calibrations. In a test run with the source and the collider beam on, it was demonstrated that the calibrations made with beam off are optimal also when the beam is on, and the actual systematics in a physics run were estimated. These promising results show the potentialities of this detector in the high rate environment of a particle collider, and pave the way for the use of CZT detectors in kaonic atoms researches and in accelerators, with applications for particle and nuclear physics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.11294v2-abstract-full').style.display = 'none'; document.getElementById('2410.11294v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 15 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 9 figures, 3 tables</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Sensors 2024, 24(23), 7562 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2410.00669">arXiv:2410.00669</a> <span> [<a href="https://arxiv.org/pdf/2410.00669">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Development of the normalization method for the first large field-of-view plastic-based PET Modular scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Coussat%2C+A">A. Coussat</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">J. Baran</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a>, <a href="/search/physics?searchtype=author&query=Beyene%2C+E">E. Beyene</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Eliyan%2C+K+V">K. V. Eliyan</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubat%2C+K">K. Kubat</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Vendan%2C+A+K">A. Kunimal Vendan</a>, <a href="/search/physics?searchtype=author&query=Lisowski%2C+E">E. Lisowski</a>, <a href="/search/physics?searchtype=author&query=Lisowski%2C+F">F. Lisowski</a>, <a href="/search/physics?searchtype=author&query=M%C4%99drala-Sowa%2C+J">J. M臋drala-Sowa</a>, <a href="/search/physics?searchtype=author&query=Moyo%2C+S">S. Moyo</a>, <a href="/search/physics?searchtype=author&query=Mryka%2C+W">W. Mryka</a> , et al. (12 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2410.00669v1-abstract-short" style="display: inline;"> In positron emission tomography acquisition (PET), sensitivity along a line of response can vary due to crystal geometrical arrangements in the scanner and/or detector inefficiencies, leading to severe artefacts in the reconstructed image. To mitigate these effects, data must be corrected by a set of normalization coefficients applied to each line of response. The J-PET Modular scanner is a PET de… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.00669v1-abstract-full').style.display = 'inline'; document.getElementById('2410.00669v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2410.00669v1-abstract-full" style="display: none;"> In positron emission tomography acquisition (PET), sensitivity along a line of response can vary due to crystal geometrical arrangements in the scanner and/or detector inefficiencies, leading to severe artefacts in the reconstructed image. To mitigate these effects, data must be corrected by a set of normalization coefficients applied to each line of response. The J-PET Modular scanner is a PET device made of 50 cm long plastic strips arranged axially, currently in operation at the Jagiellonian University in Krak贸w (Poland). We have implemented a normalization method for the large field-of-view plastic-based J-PET Modular scanner using the component-based approach. We estimated the geometric normalization factors for the J-PET Modular scanner using Monte Carlo simulations. We also analysed the effects of variations in detection efficiency. A dedicated cylindrical phantom was simulated to investigate the impact of various factors on image quality. The image quality was quantified in terms of radial and axial uniformity metrics, and the standard deviation to mean intensity ratio, determined for a set of image slices. Without normalization, reconstructions of a uniform cylinder exhibit artefacts. These artefacts were satisfactorily compensated using the normalization factors. Applying geometrical corrections lowers the non-uniformity of the image expressed as a standard deviation-to-mean ratio to a range between 5.5 % to 8.5 %. Computationally, the technique is straightforward to parallelize, making it time-efficient. Preliminary estimates suggest that the method is appropriate for use with long axial field-of-view scanners, such as the total-body J-PET, currently under development at the Jagiellonian University. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2410.00669v1-abstract-full').style.display = 'none'; document.getElementById('2410.00669v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 October, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">36 pages, 16 figures, 4 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2409.07963">arXiv:2409.07963</a> <span> [<a href="https://arxiv.org/pdf/2409.07963">pdf</a>, <a href="https://arxiv.org/format/2409.07963">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Nanoporosity imaging by positronium lifetime tomography </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Beyene%2C+E">E. Beyene</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubat%2C+K">K. Kubat</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Lisowski%2C+E">E. Lisowski</a>, <a href="/search/physics?searchtype=author&query=Lisowski%2C+F">F. Lisowski</a>, <a href="/search/physics?searchtype=author&query=M%C4%99drala-Sowa%2C+J">J. M臋drala-Sowa</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pandey%2C+P">P. Pandey</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a>, <a href="/search/physics?searchtype=author&query=del+Rio%2C+E+P">E. Perez del Rio</a>, <a href="/search/physics?searchtype=author&query=R%C3%A4dler%2C+M">M. R盲dler</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Skurzok%2C+M">M. Skurzok</a>, <a href="/search/physics?searchtype=author&query=Tayefi%2C+K">K. Tayefi</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2409.07963v1-abstract-short" style="display: inline;"> Positron Annihilation Lifetime Spectroscopy (PALS) is a well-established non-destructive technique used for nanostructural characterization of porous materials. It is based on the annihilation of a positron and an electron. Mean positron lifetime in the material depends on the free voids size and molecular environment, allowing the study of porosity and structural transitions in the nanometer scal… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.07963v1-abstract-full').style.display = 'inline'; document.getElementById('2409.07963v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2409.07963v1-abstract-full" style="display: none;"> Positron Annihilation Lifetime Spectroscopy (PALS) is a well-established non-destructive technique used for nanostructural characterization of porous materials. It is based on the annihilation of a positron and an electron. Mean positron lifetime in the material depends on the free voids size and molecular environment, allowing the study of porosity and structural transitions in the nanometer scale. We have developed a novel method enabling spatially resolved PALS, thus providing tomography of nanostructural characterization of an extended object. Correlating space (position) and structural (lifetime) information brings new insight in materials studies, especially in the characterization of the purity and pore distribution. For the first time, a porosity image using stationary positron sources for the simultaneous measurement of the porous polymers XAD4, silica aerogel powder IC3100, and polyvinyl toluene scintillator PVT by the J-PET tomograph is demonstrated <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2409.07963v1-abstract-full').style.display = 'none'; document.getElementById('2409.07963v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2408.00574">arXiv:2408.00574</a> <span> [<a href="https://arxiv.org/pdf/2408.00574">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Investigation of Novel Preclinical Total Body PET Designed With J-PET Technology:A Simulation Study </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a>, <a href="/search/physics?searchtype=author&query=Ardebili%2C+F+T">F. Tayefi Ardebili</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">J. Baran</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Eliyan%2C+K">K. Eliyan</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Konieczka%2C+P">P. Konieczka</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Panek%2C+D">D. Panek</a>, <a href="/search/physics?searchtype=author&query=del+Rio%2C+E+P">E. Perez del Rio</a>, <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Shivani"> Shivani</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2408.00574v2-abstract-short" style="display: inline;"> The growing interest in human-grade total body positron emission tomography (PET) systems has also application in small animal research. Due to the existing limitations in human-based studies involving drug development and novel treatment monitoring, animal-based research became a necessary step for testing and protocol preparation. In this simulation-based study two unconventional, cost-effective… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.00574v2-abstract-full').style.display = 'inline'; document.getElementById('2408.00574v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2408.00574v2-abstract-full" style="display: none;"> The growing interest in human-grade total body positron emission tomography (PET) systems has also application in small animal research. Due to the existing limitations in human-based studies involving drug development and novel treatment monitoring, animal-based research became a necessary step for testing and protocol preparation. In this simulation-based study two unconventional, cost-effective small animal total body PET scanners (for mouse and rat studies) have been investigated in order to inspect their feasibility for preclinical research. They were designed with the novel technology explored by the Jagiellonian-PET (J-PET) Collaboration. Two main PET characteristics: sensitivity and spatial resolution were mainly inspected to evaluate their performance. Moreover, the impact of the scintillator dimension and time-of-flight on the latter parameter was examined in order to design the most efficient tomographs. The presented results show that for mouse TB J-PET the achievable system sensitivity is equal to 2.35% and volumetric spatial resolution to 9.46 +- 0.54 mm3, while for rat TB J-PET they are equal to 2.6% and 14.11 +- 0.80 mm3, respectively. Furthermore, it was shown that the designed tomographs are almost parallax-free systems, hence, they resolve the problem of the acceptance criterion tradeoff between enhancing spatial resolution and reducing sensitivity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2408.00574v2-abstract-full').style.display = 'none'; document.getElementById('2408.00574v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.19465">arXiv:2407.19465</a> <span> [<a href="https://arxiv.org/pdf/2407.19465">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2023.168186">10.1016/j.nima.2023.168186 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Comparative studies of plastic scintillator strips with high technical attenuation length for the total-body J-PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">J. Baran</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Coussat%2C+A">A. Coussat</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">J. Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Valsan%2C+E+K">E. Kavya Valsan</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+G">G. Moskal</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Panek%2C+D">D. Panek</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a>, <a href="/search/physics?searchtype=author&query=del+Rio%2C+E+P">E. Perez del Rio</a>, <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Rucinski%2C+A">A. Rucinski</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.19465v2-abstract-short" style="display: inline;"> Plastic scintillator strips are considered as one of the promising solutions for the cost-effective construction of total-body positron emission tomography, (PET) system. The purpose of the performed measurements is to compare the transparency of long plastic scintillators with dimensions 6 mm x 24 mm x 1000 mm and with all surfaces polished. Six different types of commercial, general purpose, blu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.19465v2-abstract-full').style.display = 'inline'; document.getElementById('2407.19465v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.19465v2-abstract-full" style="display: none;"> Plastic scintillator strips are considered as one of the promising solutions for the cost-effective construction of total-body positron emission tomography, (PET) system. The purpose of the performed measurements is to compare the transparency of long plastic scintillators with dimensions 6 mm x 24 mm x 1000 mm and with all surfaces polished. Six different types of commercial, general purpose, blue-emitting plastic scintillators with low attenuation of visible light were tested, namely: polyvinyl toluene-based BC-408, EJ-200, RP-408, and polystyrene-based Epic, SP32 and UPS-923A. For determination of the best type of plastic scintillator for totalbody Jagiellonian positron emission tomograph (TB-J-PET) construction, emission and transmission spectra, and technical attenuation length (TAL) of blue light-emitting by the scintillators were measured and compared. The TAL values were determined with the use of UV lamp as excitation source, and photodiode as light detector. Emission spectra of investigated scintillators have maxima in the range from 420 nm to 429 nm. The BC-408 and EJ-200 have the highest transmittance values of about 90% at the maximum emission wavelength measured through a 6 mm thick scintillator strip and the highest technical attenuation length reaching about 2000 mm, allowing assembly of long detection modules for time-of-flight (TOF) J-PET scanners. Influence of the 6 mm x 6 mm, 12 mm x 6 mm, 24 mm x 6 mm cross-sections of the 1000 mm long EJ-200 plastic scintillator on the TAL and signal intensity was measured. The highest TAL value was determined for samples with 24 mm x 6 mm cross-section. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.19465v2-abstract-full').style.display = 'none'; document.getElementById('2407.19465v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Inst. and Methods in Physics Research, A 1051 (2023) 168186 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2407.08574">arXiv:2407.08574</a> <span> [<a href="https://arxiv.org/pdf/2407.08574">pdf</a>, <a href="https://arxiv.org/format/2407.08574">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> Non-maximal entanglement of photons from positron-electron annihilation demonstrated using a novel plastic PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Beyene%2C+E+Y">E. Y. Beyene</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Coussat%2C+A">A. Coussat</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplanoglu%2C+T">T. Kaplanoglu</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Lisowski%2C+E">E. Lisowski</a>, <a href="/search/physics?searchtype=author&query=Lisowski%2C+F">F. Lisowski</a>, <a href="/search/physics?searchtype=author&query=Mryka%2C+W">W. Mryka</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a>, <a href="/search/physics?searchtype=author&query=del+Rio%2C+E+P">E. P. del Rio</a>, <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Radler%2C+M">M. Radler</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2407.08574v2-abstract-short" style="display: inline;"> In the state-of-the-art Positron Emission Tomography (PET), information about the polarization of annihilation photons is not available. Current PET systems track molecules labeled with positron-emitting radioisotopes by detecting the propagation direction of two photons from positron-electron annihilation. However, annihilation photons carry more information than just the site where they originat… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08574v2-abstract-full').style.display = 'inline'; document.getElementById('2407.08574v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2407.08574v2-abstract-full" style="display: none;"> In the state-of-the-art Positron Emission Tomography (PET), information about the polarization of annihilation photons is not available. Current PET systems track molecules labeled with positron-emitting radioisotopes by detecting the propagation direction of two photons from positron-electron annihilation. However, annihilation photons carry more information than just the site where they originated. Here we present a novel J-PET scanner built from plastic scintillators, in which annihilation photons interact predominantly via the Compton effect, providing information about photon polarization in addition to information on photon direction of propagation. Theoretically, photons from the decay of positronium in a vacuum are maximally entangled in polarization. However, in matter, when the positron from positronium annihilates with the electron bound to the atom, the question arises whether the photons from such annihilation are maximally entangled. In this work, we determine the distribution of the relative angle between polarization orientations of two photons from positron-electron annihilation in a porous polymer. Contrary to prior results for positron annihilation in aluminum and copper, where the strength of observed correlations is as expected for maximally entangled photons, our results show a significant deviation. We demonstrate that in porous polymer, photon polarization correlation is weaker than for maximally entangled photons but stronger than for separable photons. The data indicate that more than 40% of annihilations in Amberlite resin lead to a non-maximally entangled state. Our result indicates the degree of correlation depends on the annihilation mechanism and the molecular arrangement. We anticipate that the introduced Compton interaction-based PET system opens a promising perspective for exploring polarization correlations in PET as a novel diagnostic indicator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2407.08574v2-abstract-full').style.display = 'none'; document.getElementById('2407.08574v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 September, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 July, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.12942">arXiv:2405.12942</a> <span> [<a href="https://arxiv.org/pdf/2405.12942">pdf</a>, <a href="https://arxiv.org/format/2405.12942">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Kaonic lead feasibility measurement at DA桅NE to solve the charged kaon mass discrepancy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Abbene%2C+L">L. Abbene</a>, <a href="/search/physics?searchtype=author&query=Amsler%2C+C">C. Amsler</a>, <a href="/search/physics?searchtype=author&query=Artibani%2C+F">F. Artibani</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Buttacavoli%2C+A">A. Buttacavoli</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+F">F. Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a> , et al. (17 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2405.12942v1-abstract-short" style="display: inline;"> An HPGe detector equipped with a transistor reset preamplifier and readout with a CAEN DT5781 fast pulse digitizer was employed in the measurement of X-rays from kaonic lead at the DA$桅$NE $e^+e^-$ collider at the Laboratori Nazionali di Frascati of INFN. A thin scintillator in front of a lead target was used to select kaons impinging on it and to form the trigger for the HPGe detector. We present… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.12942v1-abstract-full').style.display = 'inline'; document.getElementById('2405.12942v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.12942v1-abstract-full" style="display: none;"> An HPGe detector equipped with a transistor reset preamplifier and readout with a CAEN DT5781 fast pulse digitizer was employed in the measurement of X-rays from kaonic lead at the DA$桅$NE $e^+e^-$ collider at the Laboratori Nazionali di Frascati of INFN. A thin scintillator in front of a lead target was used to select kaons impinging on it and to form the trigger for the HPGe detector. We present the results of the kaonic lead feasibility measurement, where we show that the resolution of the HPGe detector in regular beam conditions remains the same as that without the beam and that a satisfactory background reduction can be achieved. This measurement serves as a test bed for future dedicated kaonic X-rays measurements for the more precise determination of the charged kaon mass. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.12942v1-abstract-full').style.display = 'none'; document.getElementById('2405.12942v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2401.17166">arXiv:2401.17166</a> <span> [<a href="https://arxiv.org/pdf/2401.17166">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> </div> </div> <p class="title is-5 mathjax"> Biophotons: A Hard Problem </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Francini%2C+R">R. Francini</a>, <a href="/search/physics?searchtype=author&query=Davoli%2C+I">I. Davoli</a>, <a href="/search/physics?searchtype=author&query=De+Matteis%2C+F">F. De Matteis</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Grandi%2C+M">M. Grandi</a>, <a href="/search/physics?searchtype=author&query=Pace%2C+E">E. Pace</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Grigolini%2C+P">P. Grigolini</a>, <a href="/search/physics?searchtype=author&query=Benfatto%2C+M">M. Benfatto</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2401.17166v1-abstract-short" style="display: inline;"> About a hundred years ago the Russian biologist A. Gurwitsch, based on his experiments with onion plants by measuring their growth rate, made the hypothesis that plants emitted a weak electromagnetic field which somehow influenced cell growth. This interesting observation remained fundamentally ignored by the scientific community and only in the 1950s the electromagnetic emission from some plants… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.17166v1-abstract-full').style.display = 'inline'; document.getElementById('2401.17166v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2401.17166v1-abstract-full" style="display: none;"> About a hundred years ago the Russian biologist A. Gurwitsch, based on his experiments with onion plants by measuring their growth rate, made the hypothesis that plants emitted a weak electromagnetic field which somehow influenced cell growth. This interesting observation remained fundamentally ignored by the scientific community and only in the 1950s the electromagnetic emission from some plants was measured using a photomultiplier used in single counting mode. Later, in the 80s several groups in the world started some extensive work to understand the origin and role of this ultra-weak emission, hereby called biophotons, coming from living organisms. Biophotons are an endogenous very small production of photons in the visible energy range in and from cells and organism, and this emission is characteristic of alive organisms. Today there is no doubt that biophotons really exist, this emission has in fact been measured by many groups and on many different living organisms, from humans to bacteria. On the contrary, the origin of biophotons and whether organisms use them in some way to exchange information is not yet well known; no model proposed since now is really capable of reproducing and interpreting the great variety of experimental data coming from the many different living systems measured so far. In this brief review we present our experimental work on biophotons coming from germinating seeds, the main experimental results and some methods we are using to analyze the data in order to open the door for interpretative models of this phenomenon and clarifying its function in the regulation and communication between cells and living organisms. We also discuss some ideas on how to increase the signal-to-noise ratio of the measured signal to have new experimental possibilities that allow the measurement and the characterization of currently unmeasurable quantities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2401.17166v1-abstract-full').style.display = 'none'; document.getElementById('2401.17166v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 January, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.16144">arXiv:2311.16144</a> <span> [<a href="https://arxiv.org/pdf/2311.16144">pdf</a>, <a href="https://arxiv.org/format/2311.16144">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> SIDDHARTA-2 apparatus for kaonic atoms research on the DA$桅$NE collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F. Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Abbene%2C+L">L. Abbene</a>, <a href="/search/physics?searchtype=author&query=Amsler%2C+C">C. Amsler</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Borghi%2C+G">G. Borghi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Buttacavoli%2C+A">A. Buttacavoli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a> , et al. (19 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2311.16144v1-abstract-short" style="display: inline;"> SIDDHARTA-2 represents a state-of-the-art experiment designed to perform dedicated measurements of kaonic atoms, which are particular exotic atom configurations composed of a negatively charged kaon and a nucleus. Investigating these atoms provides an exceptional tool to comprehend the strong interactions in the non-perturbative regime involving strangeness. The experiment is installed at the DA… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.16144v1-abstract-full').style.display = 'inline'; document.getElementById('2311.16144v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.16144v1-abstract-full" style="display: none;"> SIDDHARTA-2 represents a state-of-the-art experiment designed to perform dedicated measurements of kaonic atoms, which are particular exotic atom configurations composed of a negatively charged kaon and a nucleus. Investigating these atoms provides an exceptional tool to comprehend the strong interactions in the non-perturbative regime involving strangeness. The experiment is installed at the DA$桅$NE electron-positron collider, of the INFN National Laboratory of Frascati (INFN-LNF) in Italy, aiming to perform the first-ever measurement of the 2p$\rightarrow$1s X-ray transitions in kaonic deuterium, a crucial step towards determining the isospin-dependent antikaon-nucleon scattering lengths. Based on the experience gained with the previous SIDDHARTA experiment, which performed the most precise measurement of the kaonic hydrogen 2p$\rightarrow$1s X-ray transitions, the present apparatus has been upgraded with innovative Silicon Drift Detectors (SDDs), distributed around a cryogenic gaseous target placed in a vacuum chamber at a short distance above the interaction region of the collider. We present a comprehensive description of the SIDDHARTA-2 setup including the optimization of its various components during the commissioning phase of the collider. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.16144v1-abstract-full').style.display = 'none'; document.getElementById('2311.16144v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 November, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">32 pages, 21 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.15062">arXiv:2310.15062</a> <span> [<a href="https://arxiv.org/pdf/2310.15062">pdf</a>, <a href="https://arxiv.org/format/2310.15062">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> CdZnTe detectors tested at the DA桅NE collider for future kaonic atoms measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Abbene%2C+L">L. Abbene</a>, <a href="/search/physics?searchtype=author&query=Artibani%2C+F">F. Artibani</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bettelli%2C+M">M. Bettelli</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Borghi%2C+G">G. Borghi</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Buttacavoli%2C+A">A. Buttacavoli</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+F">F. Clozza</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a> , et al. (20 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.15062v1-abstract-short" style="display: inline;"> The SIDDHARTA-2 collaboration at the INFN Laboratories of Frascati (LNF) aims to perform groundbreaking measurements on kaonic atoms. In parallel and beyond the ongoing kaonic deuterium, presently running on the DA$桅$NE collider at LNF, we plan to install additional detectors to perform further kaonic atoms' studies, taking advantage of the unique low energy and low momentum spread $K^-$ beam deli… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.15062v1-abstract-full').style.display = 'inline'; document.getElementById('2310.15062v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.15062v1-abstract-full" style="display: none;"> The SIDDHARTA-2 collaboration at the INFN Laboratories of Frascati (LNF) aims to perform groundbreaking measurements on kaonic atoms. In parallel and beyond the ongoing kaonic deuterium, presently running on the DA$桅$NE collider at LNF, we plan to install additional detectors to perform further kaonic atoms' studies, taking advantage of the unique low energy and low momentum spread $K^-$ beam delivered by the at-rest decay of the $蠁$ meson. CdZnTe devices are ideal for detecting transitions toward both the upper and lower levels of intermediate-mass kaonic atoms, like kaonic carbon and aluminium, which have an important impact on the strangeness sector of nuclear physics. We present the results obtained in a set of preliminary tests conducted on DA$桅$NE, in view of measurements foreseen in 2024, with the twofold aim to tune the timing window required to reject the extremely high electromagnetic background, and to quantify the readout electronics saturation effect due to the high rate, when placed close to the Interaction Region (IR). In the first test we used commercial devices and electronics, while for the second one both were customized at the IMEM-CNR of Parma and the University of Palermo. The results confirmed the possibility of finding and matching a proper timing window where to identify the signal events and proved better performances, in terms of energy resolution, of the custom system. In both cases, strong saturation effects were confirmed, accounting for a loss of almost 90\% of the events, which will be overcome by a dedicated shielding structure foreseen for the final experimental setup. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.15062v1-abstract-full').style.display = 'none'; document.getElementById('2310.15062v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2310.06062">arXiv:2310.06062</a> <span> [<a href="https://arxiv.org/pdf/2310.06062">pdf</a>, <a href="https://arxiv.org/format/2310.06062">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Detecting Iron Oxidation States in Liquids with the VOXES Bragg Spectrometer </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Manti%2C+S">Simone Manti</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">Marco Miliucci</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">Alessandro Scordo</a>, <a href="/search/physics?searchtype=author&query=Bedogni%2C+R">Roberto Bedogni</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">Alberto Clozza</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">Mihail Iliescu</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+G">Gabriel Moskal</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">Kristian Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Porcelli%2C+A">Alessio Porcelli</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+D">Diana Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">Florin Sirghi</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">Catalina Curceanu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2310.06062v1-abstract-short" style="display: inline;"> Determining the oxidation states of metals assumes great importance in various applications because a variation in the oxidation number can drastically influence the material properties. As an example, this becomes evident in edible liquids like wine and oil, where a change in the oxidation states of the contained metals can significantly modify both the overall quality and taste. To this end, her… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.06062v1-abstract-full').style.display = 'inline'; document.getElementById('2310.06062v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2310.06062v1-abstract-full" style="display: none;"> Determining the oxidation states of metals assumes great importance in various applications because a variation in the oxidation number can drastically influence the material properties. As an example, this becomes evident in edible liquids like wine and oil, where a change in the oxidation states of the contained metals can significantly modify both the overall quality and taste. To this end, here we present the MITIQO project, which aims to identify oxidation states of metals in edible liquids utilizing X-ray emission with Bragg spectroscopy. This is achieved using the VOXES crystal spectrometer, developed at INFN National Laboratories of Frascati (LNF), employing mosaic crystal (HAPG) in the Von Hamos configuration. This combination allow us to work with effective source sizes of up to a few millimeters and improves the typical low efficiency of Bragg spectroscopy, a crucial aspect when studying liquids with low metal concentration. Here we showcase the concept behind MITIQO, for a liquid solution containing oxidized iron. We performed several high-resolution emission spectra measurements, for the liquid and for different powdered samples containing oxidized and pure iron. By looking at the spectral features of the iron's K$尾$ emission lineshape, we were able to obtain, for a liquid, a result consistent with the oxidized iron powders and successfully quantifying the effect of oxidation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2310.06062v1-abstract-full').style.display = 'none'; document.getElementById('2310.06062v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.07171">arXiv:2309.07171</a> <span> [<a href="https://arxiv.org/pdf/2309.07171">pdf</a>, <a href="https://arxiv.org/format/2309.07171">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Feasibility studies for imaging e$^{+}$e$^{-}$ annihilation with modular multi-strip detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Povolo%2C+L">L. Povolo</a>, <a href="/search/physics?searchtype=author&query=Mariazzi%2C+S">S. Mariazzi</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">J. Baran</a>, <a href="/search/physics?searchtype=author&query=Beyene%2C+E">E. Beyene</a>, <a href="/search/physics?searchtype=author&query=Brusa%2C+R+S">R. S. Brusa</a>, <a href="/search/physics?searchtype=author&query=Caravita%2C+R">R. Caravita</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Coussat%2C+A">A. Coussat</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Das%2C+M">M. Das</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Eliyan%2C+K">K. Eliyan</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gupta%2C+N">N. Gupta</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kaplanoglu%2C+T">T. Kaplanoglu</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a> , et al. (19 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.07171v1-abstract-short" style="display: inline;"> Studies based on imaging the annihilation of the electron (e$^{-}$) and its antiparticle positron (e$^{+}$) open up several interesting applications in nuclear medicine and fundamental research. The annihilation process involves both the direct conversion of e$^{+}$e$^{-}$ into photons and the formation of their atomically bound state, the positronium atom (Ps), which can be used as a probe for fu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.07171v1-abstract-full').style.display = 'inline'; document.getElementById('2309.07171v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.07171v1-abstract-full" style="display: none;"> Studies based on imaging the annihilation of the electron (e$^{-}$) and its antiparticle positron (e$^{+}$) open up several interesting applications in nuclear medicine and fundamental research. The annihilation process involves both the direct conversion of e$^{+}$e$^{-}$ into photons and the formation of their atomically bound state, the positronium atom (Ps), which can be used as a probe for fundamental studies. With the ability to produce large quantities of Ps, manipulate them in long-lived Ps states, and image their annihilations after a free fall or after passing through atomic interferometers, this purely leptonic antimatter system can be used to perform inertial sensing studies in view of a direct test of Einstein equivalence principle. It is envisioned that modular multistrip detectors can be exploited as potential detection units for this kind of studies. In this work, we report the results of the first feasibility study performed on a e$^{+}$ beamline using two detection modules to evaluate their reconstruction performance and spatial resolution for imaging e$^{+}$e$^{-}$ annihilations and thus their applicability for gravitational studies of Ps. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.07171v1-abstract-full').style.display = 'none'; document.getElementById('2309.07171v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.17153">arXiv:2305.17153</a> <span> [<a href="https://arxiv.org/pdf/2305.17153">pdf</a>, <a href="https://arxiv.org/format/2305.17153">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6501/ad080a">10.1088/1361-6501/ad080a <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Novel Machine Learning and Differentiable Programming Techniques applied to the VIP-2 Underground Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F Napolitano</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A Clozza</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M Iliescu</a>, <a href="/search/physics?searchtype=author&query=Laubenstein%2C+M">M Laubenstein</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M Miliucci</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Porcelli%2C+A">A Porcelli</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A Scordo</a>, <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+D">D Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F Sirghi</a>, <a href="/search/physics?searchtype=author&query=Doce%2C+O">O Doce</a>, <a href="/search/physics?searchtype=author&query=Zmeskal%2C+J">J Zmeskal</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C Curceanu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.17153v1-abstract-short" style="display: inline;"> In this work, we present novel Machine Learning and Differentiable Programming enhanced calibration techniques used to improve the energy resolution of the Silicon Drift Detectors (SDDs) of the VIP-2 underground experiment at the Gran Sasso National Laboratory (LNGS). We achieve for the first time a Full Width at Half Maximum (FWHM) in VIP-2 below 180 eV at 8 keV, improving around 10 eV on the pre… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.17153v1-abstract-full').style.display = 'inline'; document.getElementById('2305.17153v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.17153v1-abstract-full" style="display: none;"> In this work, we present novel Machine Learning and Differentiable Programming enhanced calibration techniques used to improve the energy resolution of the Silicon Drift Detectors (SDDs) of the VIP-2 underground experiment at the Gran Sasso National Laboratory (LNGS). We achieve for the first time a Full Width at Half Maximum (FWHM) in VIP-2 below 180 eV at 8 keV, improving around 10 eV on the previous state-of-the-art. SDDs energy resolution is a key parameter in the VIP-2 experiment, which is dedicated to searches for physics beyond the standard quantum theory, targeting Pauli Exclusion Principle (PEP) violating atomic transitions. Additionally, we show that this method can correct for potential miscalibrations, requiring less fine-tuning with respect to standard methods. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.17153v1-abstract-full').style.display = 'none'; document.getElementById('2305.17153v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Measurement Science and Technology</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2024 Meas. Sci. Technol. 35 025501 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2305.09524">arXiv:2305.09524</a> <span> [<a href="https://arxiv.org/pdf/2305.09524">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantitative Methods">q-bio.QM</span> </div> </div> <p class="title is-5 mathjax"> Biophotons -- new experimental data and analysis </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benfatto%2C+M">M. Benfatto</a>, <a href="/search/physics?searchtype=author&query=Pace%2C+E">E. Pace</a>, <a href="/search/physics?searchtype=author&query=Davoli%2C+I">I. Davoli</a>, <a href="/search/physics?searchtype=author&query=Lucci%2C+M">Massimiliano Lucci</a>, <a href="/search/physics?searchtype=author&query=Francini%2C+R">R. Francini</a>, <a href="/search/physics?searchtype=author&query=De+Matteis%2C+F">Fabio De Matteis</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">Alessandro Scordo</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">Alberto Clozza</a>, <a href="/search/physics?searchtype=author&query=Grandi%2C+M">Maurizio Grandi</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Grigolini%2C+P">P. Grigolini</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2305.09524v1-abstract-short" style="display: inline;"> Biophotons are an ultra-weak emission of photons in the visible energy range from living matter. In this work, we study the emission from germinating seeds using an experimental technique designed to detect light of extremely small intensity. The emission from lentil seeds and single bean was analyzed during the whole germination process in terms of both the different spectral components through l… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.09524v1-abstract-full').style.display = 'inline'; document.getElementById('2305.09524v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2305.09524v1-abstract-full" style="display: none;"> Biophotons are an ultra-weak emission of photons in the visible energy range from living matter. In this work, we study the emission from germinating seeds using an experimental technique designed to detect light of extremely small intensity. The emission from lentil seeds and single bean was analyzed during the whole germination process in terms of both the different spectral components through low pass filters and the different count distributions in the various stages of the germination process. Although the shape of the emission spectrum appears to be very similar in the two samples used in our experiment, our analysis is able to highlight the differences present in the two cases. In this way, it was possible to correlate the various types of emissions to the degree of development of the seed during germination. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2305.09524v1-abstract-full').style.display = 'none'; document.getElementById('2305.09524v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 May, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages including references, 8 figures, this work has been presented to the DCP22 held in 2022 in Pisa</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.11352">arXiv:2304.11352</a> <span> [<a href="https://arxiv.org/pdf/2304.11352">pdf</a>, <a href="https://arxiv.org/format/2304.11352">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epja/s10050-023-00976-y">10.1140/epja/s10050-023-00976-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DA$\mathrm桅$NE </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F. Sgaramella</a>, <a href="/search/physics?searchtype=author&query=T%C3%BCchler%2C+M">M. T眉chler</a>, <a href="/search/physics?searchtype=author&query=Amsler%2C+C">C. Amsler</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F. Napolitano</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a> , et al. (16 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2304.11352v1-abstract-short" style="display: inline;"> The SIDDHARTA-2 experiment installed at the DA$\mathrm桅$NE collider of INFN-LNF performed, for the first time, measurements of high-n transitions in intermediate mass kaonic atoms during the data taking campaigns of 2021 and 2022. Kaonic carbon, oxygen, nitrogen and aluminium transitions, which occur in the setup materials, were measured by using the kaons stopped in the gaseous helium target cell… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.11352v1-abstract-full').style.display = 'inline'; document.getElementById('2304.11352v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.11352v1-abstract-full" style="display: none;"> The SIDDHARTA-2 experiment installed at the DA$\mathrm桅$NE collider of INFN-LNF performed, for the first time, measurements of high-n transitions in intermediate mass kaonic atoms during the data taking campaigns of 2021 and 2022. Kaonic carbon, oxygen, nitrogen and aluminium transitions, which occur in the setup materials, were measured by using the kaons stopped in the gaseous helium target cell with aluminium frames and Kapton walls, and are reported in this paper. These new kaonic atoms measurements add valuable input to the kaonic atoms transitions data base, which is used as a reference for theories and models of the low-energy strong interaction between antikaon and nuclei. Moreover, these results pave the way for future dedicated kaonic atoms measurements through the whole periodic table and to a new era for the antikaon-nuclei studies at low energy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.11352v1-abstract-full').style.display = 'none'; document.getElementById('2304.11352v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 April, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">8 pages, 7 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. A 59 (2023) 56 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2304.05834">arXiv:2304.05834</a> <span> [<a href="https://arxiv.org/pdf/2304.05834">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Comparative studies of the sensitivities of sparse and full geometries of Total-Body PET scanners built from crystals and plastic scintillators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">Meysam Dadgar</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">Szymon Parzych</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">Jakub Baran</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">Neha Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">Catalina Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">Eryk Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">Kamil Dulski</a>, <a href="/search/physics?searchtype=author&query=Elyan%2C+K">Kavya Elyan</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">Aleksander Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">Beatrix Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁ukasz Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">Konrad Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Konieczka%2C+P">Pawe艂 Konieczka</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">Grzegorz Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">Tomasz Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">Wojciech Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">Deepak Kumar</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Szymon Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Panek%2C+D">Domonik Panek</a>, <a href="/search/physics?searchtype=author&query=del+Rio%2C+E+P">Elen膮 Perez del Rio</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">Lech Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">Sushil Sharma</a>, <a href="/search/physics?searchtype=author&query=Shivani"> Shivani</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R">Roman Shopa</a>, <a href="/search/physics?searchtype=author&query=Skurzok%2C+M">Magdalena Skurzok</a> , et al. (6 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2304.05834v1-abstract-short" style="display: inline;"> Background: Total-Body imaging offers high sensitivity, single-bed position, and low dose, but high construction costs limit worldwide utilization. This study compares existing and developing tomographs using plastic scintillators via simulations to propose a cost-efficient Total-Body PET scanner. Methods: Simulations of eight uEXPLORER tomographs with different scintillator materials, axial fie… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.05834v1-abstract-full').style.display = 'inline'; document.getElementById('2304.05834v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2304.05834v1-abstract-full" style="display: none;"> Background: Total-Body imaging offers high sensitivity, single-bed position, and low dose, but high construction costs limit worldwide utilization. This study compares existing and developing tomographs using plastic scintillators via simulations to propose a cost-efficient Total-Body PET scanner. Methods: Simulations of eight uEXPLORER tomographs with different scintillator materials, axial field-of-view, and detector configuration, and eight J-PET scanners with various field-of-view, plastic scintillator cross-sections, and layers were performed. Biograph Vision was also simulated. Two types of simulations were conducted with a central source and a water-filled phantom. Results: BGO crystal-based scanners showed the best sensitivity (350 cps/kBq at the center). Sparse geometry or LYSO crystals reduced sensitivity. J-PET design showed similar sensitivity to sparse LYSO detectors, with full body coverage and additional gain for brain imaging. Conclusion: The J-PET tomography system using plastic scintillators could be a cost-efficient alternative for Total-Body PET scanners, overcoming high construction costs while maintaining sensitivity <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2304.05834v1-abstract-full').style.display = 'none'; document.getElementById('2304.05834v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 April, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.02967">arXiv:2302.02967</a> <span> [<a href="https://arxiv.org/pdf/2302.02967">pdf</a>, <a href="https://arxiv.org/format/2302.02967">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TRPMS.2023.3243735">10.1109/TRPMS.2023.3243735 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> TOF MLEM Adaptation for the Total-Body J-PET with a Realistic Analytical System Response Matrix </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shopa%2C+R+Y">R. Y. Shopa</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">J. Baran</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Brzezi%C5%84ski%2C+K">K. Brzezi艅ski</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Coussat%2C+A">A. Coussat</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">J. Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Valsan%2C+E+K">E. Kavya Valsan</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+G">G. Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Panek%2C+D">D. Panek</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a> , et al. (10 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2302.02967v3-abstract-short" style="display: inline;"> We report a study of the original image reconstruction algorithm based on the time-of-flight maximum likelihood expectation maximisation (TOF MLEM), developed for the total-body (TB) Jagiellonian PET (J-PET) scanners. The method is applicable to generic cylindrical or modular multi-layer layouts and is extendable to multi-photon imaging. The system response matrix (SRM) is represented as a set of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02967v3-abstract-full').style.display = 'inline'; document.getElementById('2302.02967v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.02967v3-abstract-full" style="display: none;"> We report a study of the original image reconstruction algorithm based on the time-of-flight maximum likelihood expectation maximisation (TOF MLEM), developed for the total-body (TB) Jagiellonian PET (J-PET) scanners. The method is applicable to generic cylindrical or modular multi-layer layouts and is extendable to multi-photon imaging. The system response matrix (SRM) is represented as a set of analytical functions, uniquely defined for each pair of plastic scintillator strips used for the detection. A realistic resolution model (RM) in detector space is derived from fitting the Monte Carlo simulated emissions and detections of annihilation photons on oblique transverse planes. Additional kernels embedded in SRM account for TOF, parallax effect and axial smearing. The algorithm was tested on datasets, simulated in GATE for the NEMA IEC and static XCAT phantoms inside a 24-module 2-layer TB J-PET. Compared to the reference TOF MLEM with none or a shift-invariant RM, an improvement was observed, as evaluated by the analysis of image quality, difference images and ground truth metrics. We also reconstructed the data with additive contributions, pre-filtered geometrically and with non-TOF scatter correction applied. Despite some deterioration, the obtained results still capitalise on the realistic RM with better edge preservation and superior ground truth metrics. The envisioned prospects of the TOF MLEM with analytical SRM include its application in multi-photon imaging and further upgrade to account for the non-collinearity, positron range and other factors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02967v3-abstract-full').style.display = 'none'; document.getElementById('2302.02967v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE Transactions on Radiation and Plasma Medical Sciences 7(5) (2023) 509-520 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.12253">arXiv:2301.12253</a> <span> [<a href="https://arxiv.org/pdf/2301.12253">pdf</a>, <a href="https://arxiv.org/format/2301.12253">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjs/s11734-023-00881-x">10.1140/epjs/s11734-023-00881-x <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> New opportunities for kaonic atoms measurements from CdZnTe detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbene%2C+L">L. Abbene</a>, <a href="/search/physics?searchtype=author&query=Bettelli%2C+M">M. Bettelli</a>, <a href="/search/physics?searchtype=author&query=Buttacavoli%2C+A">A. Buttacavoli</a>, <a href="/search/physics?searchtype=author&query=Principato%2C+F">F. Principato</a>, <a href="/search/physics?searchtype=author&query=Zappettini%2C+A">A. Zappettini</a>, <a href="/search/physics?searchtype=author&query=Amsler%2C+C">C. Amsler</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a> , et al. (20 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2301.12253v1-abstract-short" style="display: inline;"> We present the tests performed by the SIDDHARTA-2 collaboration at the DA桅NE collider with a quasi-hemispherical CdZnTe detector. The very good room-temperature energy resolution and efficiency in a wide energy range show that this detector technology is ideal for studying radiative transitions in intermediate and heavy-mass kaonic atoms. The CdZnTe detector was installed for the first time in an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.12253v1-abstract-full').style.display = 'inline'; document.getElementById('2301.12253v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.12253v1-abstract-full" style="display: none;"> We present the tests performed by the SIDDHARTA-2 collaboration at the DA桅NE collider with a quasi-hemispherical CdZnTe detector. The very good room-temperature energy resolution and efficiency in a wide energy range show that this detector technology is ideal for studying radiative transitions in intermediate and heavy-mass kaonic atoms. The CdZnTe detector was installed for the first time in an accelerator environment to perform tests on the background rejection capabilities, which were achieved by exploiting the SIDDHARTA-2 Luminosity Monitor. A spectrum with an $^{241}Am$ source has been acquired, with beams circulating in the main rings, and peak resolutions of 6% at 60 keV and of 2.2% at 511 keV have been achieved. The background suppression factor, which turned out to be of the order of $\simeq10^{5-6}$, opens the possibility to plan for future kaonic atom measurements with CdZnTe detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.12253v1-abstract-full').style.display = 'none'; document.getElementById('2301.12253v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.02832">arXiv:2301.02832</a> <span> [<a href="https://arxiv.org/pdf/2301.02832">pdf</a>, <a href="https://arxiv.org/format/2301.02832">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/18/02/C02027">10.1088/1748-0221/18/02/C02027 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">J. Baran</a>, <a href="/search/physics?searchtype=author&query=Brusa%2C+R+S">R. S. Brusa</a>, <a href="/search/physics?searchtype=author&query=Caravita%2C+R">R. Caravita</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Coussat%2C+A">A. Coussat</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Eliyan%2C+K">K. Eliyan</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Konieczka%2C+P">P. Konieczka</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">D. Kumar</a>, <a href="/search/physics?searchtype=author&query=Mariazzi%2C+S">S. Mariazzi</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Panasa%2C+L">L. Panasa</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">S. Parzych</a> , et al. (11 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2301.02832v1-abstract-short" style="display: inline;"> The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study of positronium decays. This allows performing precision tests of discrete symmetries (C, P, T) in the decays of positronium atoms. Moreover, than… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.02832v1-abstract-full').style.display = 'inline'; document.getElementById('2301.02832v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.02832v1-abstract-full" style="display: none;"> The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study of positronium decays. This allows performing precision tests of discrete symmetries (C, P, T) in the decays of positronium atoms. Moreover, thanks to the possibility of measuring the polarization direction of the photon based on Compton scattering, the predicted entanglement between the linear polarization of annihilation photons in positronium decays can also be studied. Recently, a new J-PET prototype was commissioned, based on a modular design of detection units. Each module consists of 13 plastic scintillators and can be used as a stand-alone, compact and portable detection unit. In this paper, the main features of the J-PET detector, the modular prototype and their applications for possible studies with positron and positronium beams are discussed. Preliminary results of the first test experiment performed on two detection units in the continuous positron beam recently developed at the Antimatter Laboratory (AML) of Trento are also reported. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.02832v1-abstract-full').style.display = 'none'; document.getElementById('2301.02832v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2212.02285">arXiv:2212.02285</a> <span> [<a href="https://arxiv.org/pdf/2212.02285">pdf</a>, <a href="https://arxiv.org/format/2212.02285">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Realistic Total-Body J-PET Geometry Optimization -- Monte Carlo Study </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baran%2C+J">Jakub Baran</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">Wojciech Krzemien</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">Lech Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Ba%C5%82a%2C+M">Mateusz Ba艂a</a>, <a href="/search/physics?searchtype=author&query=Coussat%2C+A">Aurelien Coussat</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">Szymon Parzych</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">Neha Chug</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">Eryk Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C+O">Catalina Oana Curceanu</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">Meysam Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">Kamil Dulski</a>, <a href="/search/physics?searchtype=author&query=Eliyan%2C+K">Kavya Eliyan</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">Jan Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">Aleksander Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">Beatrix Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">Krzysztof Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁ukasz Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">Konrad Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">Grzegorz Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">Tomasz Kozik</a>, <a href="/search/physics?searchtype=author&query=Kumar%2C+D">Deepak Kumar</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Szymon Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Panek%2C+D">Dominik Panek</a>, <a href="/search/physics?searchtype=author&query=del+Rio%2C+E+P">Elena Perez del Rio</a>, <a href="/search/physics?searchtype=author&query=Ruci%C5%84ski%2C+A">Antoni Ruci艅ski</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2212.02285v3-abstract-short" style="display: inline;"> Total-Body PET is one of the most promising medical diagnostics modalities. The high sensitivity provided by Total-Body technology can be advantageous for novel tomography methods like positronium imaging. Several efforts are ongoing to lower the price of the TB-PET systems. Among the alternatives, the Jagiellonian PET (J-PET) technology, based on plastic scintillator strips, offers a low-cost alt… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.02285v3-abstract-full').style.display = 'inline'; document.getElementById('2212.02285v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2212.02285v3-abstract-full" style="display: none;"> Total-Body PET is one of the most promising medical diagnostics modalities. The high sensitivity provided by Total-Body technology can be advantageous for novel tomography methods like positronium imaging. Several efforts are ongoing to lower the price of the TB-PET systems. Among the alternatives, the Jagiellonian PET (J-PET) technology, based on plastic scintillator strips, offers a low-cost alternative. The work aimed to compare five Total-Body J-PET geometries as a possible next generation J-PET scanner design. We present comparative studies of performance characteristics of the cost-effective Total-Body PET scanners using J-PET technology. We investigated in silico five Total-Body scanner geometries. Monte Carlo simulations of the XCAT phantom, the 2-meter sensitivity line source and positronium sensitivity phantoms were performed. We compared the sensitivity profiles for 2-gamma and 3-gamma tomography, relative cost of the setups and performed quantitative analysis of the reconstructed images. The analysis of the reconstructed XCAT images reveals the superiority of the seven-ring scanners over the three-ring setups. However, the three-ring scanners would be approximately 2-3 times cheaper. The peak sensitivity values for two-gamma vary from 20 to 34 cps/kBq. The sensitivity curves for the positronium tomography have a similar shape to the two-gamma sensitivity profiles. The peak values are lower compared to the two-gamma cases, from about 20-28 times, with a maximum of 1.66 cps/kBq. The results show the feasibility of multi-organ imaging of all the systems to be considered for the next generation of TB J-PET designs. The relative cost for all the scanners is about 10-4 times lower compared to the cost of the uExplorer. These properties coupled together with J-PET cost-effectiveness, make the J-PET technology an attractive solution for broad application in clinics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2212.02285v3-abstract-full').style.display = 'none'; document.getElementById('2212.02285v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 December, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.14991">arXiv:2208.14991</a> <span> [<a href="https://arxiv.org/pdf/2208.14991">pdf</a>, <a href="https://arxiv.org/ps/2208.14991">ps</a>, <a href="https://arxiv.org/format/2208.14991">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Studies of the linearity and stability of Silicon Drift Detectors for kaonic atoms X-ray spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=Amsler%2C+C">C. Amsler</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F. Napolitano</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Ohnishi%2C+H">H. Ohnishi</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K. Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Sada%2C+Y">Y. Sada</a> , et al. (14 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2208.14991v1-abstract-short" style="display: inline;"> The SIDDHARTA-2 experiment at the DA$桅$NE collider aims to perform precision measurements of kaonic atoms X-ray spectroscopy for the investigation of the antikaon-nucleon strong interaction. To achieve this goal, novel large-area Silicon Drift Detectors (SDDs) have been developed. These devices have special geometry, field configuration and readout electronics that ensure excellent performance in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.14991v1-abstract-full').style.display = 'inline'; document.getElementById('2208.14991v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.14991v1-abstract-full" style="display: none;"> The SIDDHARTA-2 experiment at the DA$桅$NE collider aims to perform precision measurements of kaonic atoms X-ray spectroscopy for the investigation of the antikaon-nucleon strong interaction. To achieve this goal, novel large-area Silicon Drift Detectors (SDDs) have been developed. These devices have special geometry, field configuration and readout electronics that ensure excellent performance in terms of linearity and stability. The paper presents preliminary results for the linearity determination and stability monitoring of the SDDs system during the measurement of kaonic deuterium carried out in the summer of 2022. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.14991v1-abstract-full').style.display = 'none'; document.getElementById('2208.14991v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 31 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.03422">arXiv:2208.03422</a> <span> [<a href="https://arxiv.org/pdf/2208.03422">pdf</a>, <a href="https://arxiv.org/format/2208.03422">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.12693/APhysPolA.142.373">10.12693/APhysPolA.142.373 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First tests of the full SIDDHARTA-2 experimental apparatus with a 4 He gaseous target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Amsler%2C+C">C. Amsler</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G. Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Khreptak%2C+A">A. Khreptak</a>, <a href="/search/physics?searchtype=author&query=King%2C+P">P. King</a>, <a href="/search/physics?searchtype=author&query=Sandri%2C+P+L">P. Levi Sandri</a>, <a href="/search/physics?searchtype=author&query=Manti%2C+S">S. Manti</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F. Napolitano</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a> , et al. (16 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2208.03422v1-abstract-short" style="display: inline;"> In this paper, we present the first tests performed after the full installation of the SIDDHARTA-2 experimental apparatus on the Interaction Region of the DA桅NE collider at the INFN National Laboratories of Frascati. Before starting the first measurement of the kaonic deuterium 2p{\rightarrow}1s transition, accurate evaluation of the background rejection. mainly achieved with the Kaon Trigger syst… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.03422v1-abstract-full').style.display = 'inline'; document.getElementById('2208.03422v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.03422v1-abstract-full" style="display: none;"> In this paper, we present the first tests performed after the full installation of the SIDDHARTA-2 experimental apparatus on the Interaction Region of the DA桅NE collider at the INFN National Laboratories of Frascati. Before starting the first measurement of the kaonic deuterium 2p{\rightarrow}1s transition, accurate evaluation of the background rejection. mainly achieved with the Kaon Trigger system, was required. This run, performed in the period 04-26/05/2022 with a 4 He gaseous target, confirmed the 10^5 rejection factor obtained with a reduced version of the setup and different machine conditions in 2021. This important outcome motivated the filling of the target cell with deuterium and the starting of the measurement campaign of the kaonic deuterium 2p{\rightarrow}1s transition. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.03422v1-abstract-full').style.display = 'none'; document.getElementById('2208.03422v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 August, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.12101">arXiv:2201.12101</a> <span> [<a href="https://arxiv.org/pdf/2201.12101">pdf</a>, <a href="https://arxiv.org/format/2201.12101">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1402-4896/ac95da">10.1088/1402-4896/ac95da <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The SIDDHARTA-2 calibration method for high precision kaonic atoms X-ray spectroscopy measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M Miliucci</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M Iwasaki</a>, <a href="/search/physics?searchtype=author&query=King%2C+P">P King</a>, <a href="/search/physics?searchtype=author&query=Sandri%2C+P+L">P Levi Sandri</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J Marton</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P Moskal</a>, <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F Napolitano</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A Scordo</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">H Shi</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M Silarski</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2201.12101v1-abstract-short" style="display: inline;"> The SIDDHARTA-2 experiment at the DA$桅$NE collider aims to perform the first kaonic deuterium X-ray transitions to the fundamental level measurement, with a systematic error at the level of a few eV. To achieve this challenging goal the experimental apparatus is equipped with 384 Silicon Drift Detectors (SDDs) distributed around its cryogenic gaseous target. The SDDs developed by the SIDDHARTA-2 c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.12101v1-abstract-full').style.display = 'inline'; document.getElementById('2201.12101v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.12101v1-abstract-full" style="display: none;"> The SIDDHARTA-2 experiment at the DA$桅$NE collider aims to perform the first kaonic deuterium X-ray transitions to the fundamental level measurement, with a systematic error at the level of a few eV. To achieve this challenging goal the experimental apparatus is equipped with 384 Silicon Drift Detectors (SDDs) distributed around its cryogenic gaseous target. The SDDs developed by the SIDDHARTA-2 collaboration are suitable for high precision kaonic atoms spectroscopy, thanks to their high energy and time resolutions combined with their radiation hardness. The energy response of each detector must be calibrated and monitored to keep the systematic error, due to processes such as gain fluctuations, at the level of 2-3 eV. This paper presents the SIDDHARTA-2 calibration method which was optimized during the preliminary phase of the experiment in the real background conditions of the DA$桅$NE collider, which is a fundamental tool to guarantee the high precision spectroscopic performances of the system over long periods of data taking, as that required for the kaonic deuterium measurement. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.12101v1-abstract-full').style.display = 'none'; document.getElementById('2201.12101v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 28 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.11525">arXiv:2201.11525</a> <span> [<a href="https://arxiv.org/pdf/2201.11525">pdf</a>, <a href="https://arxiv.org/format/2201.11525">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1402-4896/ac7fc0">10.1088/1402-4896/ac7fc0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Kaonic Atoms at the DA$桅$NE Collider with the SIDDHARTA-2 Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F Napolitano</a>, <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Sandri%2C+P+L">P Levi Sandri</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M Miliucci</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P Moskal</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A Scordo</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">H Shi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+D">D Sirghi</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2201.11525v1-abstract-short" style="display: inline;"> Kaonic atoms are a unique tool to explore quantum chromodynamics in the strangeness sector at low energy, with implications reaching neutron stars and dark matter. Precision X-ray spectroscopy can fully unlock the at-threshold isospin dependent antikaon-nucleon scattering lengths, via the atomic transitions to the fundamental level. While the SIDDHARTA experiment at the INFN-LNF DA$桅$NE collider s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.11525v1-abstract-full').style.display = 'inline'; document.getElementById('2201.11525v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.11525v1-abstract-full" style="display: none;"> Kaonic atoms are a unique tool to explore quantum chromodynamics in the strangeness sector at low energy, with implications reaching neutron stars and dark matter. Precision X-ray spectroscopy can fully unlock the at-threshold isospin dependent antikaon-nucleon scattering lengths, via the atomic transitions to the fundamental level. While the SIDDHARTA experiment at the INFN-LNF DA$桅$NE collider successfully measured kaonic hydrogen, its successor SIDDHARTA-2 is starting now its data taking campaign aiming to finally fully disentangle the isoscalar and isovector scattering lengths via the measurement of kaonic deuterium. An overview of the first experimental results from a preparatory run for the SIDDAHARTA-2 experiment is presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.11525v1-abstract-full').style.display = 'none'; document.getElementById('2201.11525v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 7 figures, to be sumbitted to Phys. Scr. - Focus on New Frontiers in Physics - Selected Papers from ICNFP 2021</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2201.09735">arXiv:2201.09735</a> <span> [<a href="https://arxiv.org/pdf/2201.09735">pdf</a>, <a href="https://arxiv.org/format/2201.09735">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6471/ac5dac">10.1088/1361-6471/ac5dac <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A new kaonic helium measurement in gas by SIDDHARTINO at the DA桅NE collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sirghi%2C+D">D Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A Clozza</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">G Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Sandri%2C+P+L">P Levi Sandri</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M Miliucci</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P Moskal</a>, <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">F Napolitano</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A Scordo</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2201.09735v1-abstract-short" style="display: inline;"> The SIDDHARTINO experiment at the DA桅NE Collider of INFN-LNF, the pilot run for the SIDDHARTA-2 experiment which aims to perform the measurement of kaonic deuterium transitions to the fundamental level, has successfully been concluded. The paper reports the main results of this run, including the optimization of various components of the apparatus, among which the degrader needed to maximize the f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.09735v1-abstract-full').style.display = 'inline'; document.getElementById('2201.09735v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2201.09735v1-abstract-full" style="display: none;"> The SIDDHARTINO experiment at the DA桅NE Collider of INFN-LNF, the pilot run for the SIDDHARTA-2 experiment which aims to perform the measurement of kaonic deuterium transitions to the fundamental level, has successfully been concluded. The paper reports the main results of this run, including the optimization of various components of the apparatus, among which the degrader needed to maximize the fraction of kaons stopped inside the target, through measurements of kaonic helium transitions to the 2p level. The obtained shift and width values are 蔚_2p = E_exp-E_e.m = 0.2 {\pm} 2.5(stat) {\pm} 2(syst) eV and 螕_2p = 8 {\pm} 10 eV (stat), respectively. This new measurement of the shift, in particular, represents the most precise one for a gaseous target and is expected to contribute to a better understanding of the kaon-nuclei interaction at low energy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2201.09735v1-abstract-full').style.display = 'none'; document.getElementById('2201.09735v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 January, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2112.08741">arXiv:2112.08741</a> <span> [<a href="https://arxiv.org/pdf/2112.08741">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Biological Physics">physics.bio-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1126/sciadv.abh4394">10.1126/sciadv.abh4394 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Positronium imaging with the novel multiphoton PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">Pawe艂 Moskal</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">Kamil Dulski</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">Neha Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">Catalina Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">Eryk Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">Meysam Dadgar</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">Jan Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">Aleksander Gajos</a>, <a href="/search/physics?searchtype=author&query=Grudzie%C5%84%2C+G">Grzegorz Grudzie艅</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">Beatrix C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">Krzysztof Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁ukasz Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Karimi%2C+H">Hanieh Karimi</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">Konrad Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">Grzegorz Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">Pawe艂 Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">Tomasz Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">Nikodem Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">Wojciech Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">Ewelina Kubicz</a>, <a href="/search/physics?searchtype=author&query=Ma%C5%82czak%2C+P">Piotr Ma艂czak</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Szymon Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">Monika Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=P%C4%99dziwiatr%2C+M">Micha艂 P臋dziwiatr</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">Lech Raczy艅ski</a> , et al. (11 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2112.08741v1-abstract-short" style="display: inline;"> In vivo assessment of cancer and precise location of altered tissues at initial stages of molecular disorders are important diagnostic challenges. Positronium is copiously formed in the free molecular spaces in the patient's body during positron emission tomography (PET). The positronium properties vary according to the size of inter- and intramolecular voids and the concentration of molecules in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.08741v1-abstract-full').style.display = 'inline'; document.getElementById('2112.08741v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2112.08741v1-abstract-full" style="display: none;"> In vivo assessment of cancer and precise location of altered tissues at initial stages of molecular disorders are important diagnostic challenges. Positronium is copiously formed in the free molecular spaces in the patient's body during positron emission tomography (PET). The positronium properties vary according to the size of inter- and intramolecular voids and the concentration of molecules in them such as, e.g., molecular oxygen, O2; therefore, positronium imaging may provide information about disease progression during the initial stages of molecular alterations. Current PET systems do not allow acquisition of positronium images. This study presents a new method that enables positronium imaging by simultaneous registration of annihilation photons and deexcitation photons from pharmaceuticals labeled with radionuclides. The first positronium imaging of a phantom built from cardiac myxoma and adipose tissue is demonstrated. It is anticipated that positronium imaging will substantially enhance the specificity of PET diagnostics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2112.08741v1-abstract-full').style.display = 'none'; document.getElementById('2112.08741v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 December, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Science Advances 7 (2021) eabh4394 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.01572">arXiv:2111.01572</a> <span> [<a href="https://arxiv.org/pdf/2111.01572">pdf</a>, <a href="https://arxiv.org/format/2111.01572">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Silicon Drift Detectors spectroscopic response during the SIDDHARTA-2 Kaonic Helium run at the DA桅NE collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">Marco Miliucci</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">Massimiliano Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">Damir Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">Mario Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">Marco Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">Michael Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">Alberto Clozza</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">Catalina Curceanu</a>, <a href="/search/physics?searchtype=author&query=Deda%2C+G">Griseld Deda</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">Luca De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">Raffaele Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">Carlo Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">Carlo Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">Mihail Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">Masahiko Iwasaki</a>, <a href="/search/physics?searchtype=author&query=King%2C+P">Pietro King</a>, <a href="/search/physics?searchtype=author&query=Sandri%2C+P+L">Paolo Levi Sandri</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">Johann Marton</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">Pawe艂 Moskal</a>, <a href="/search/physics?searchtype=author&query=Napolitano%2C+F">Fabrizio Napolitano</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Szymon Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">Kristian Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">Alessandro Scordo</a>, <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">Francesco Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">Hexi Shi</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.01572v1-abstract-short" style="display: inline;"> A large-area Silicon Drift Detectors (SDDs) system has been developed by the SIDDHARTA2 collaboration for high precision light kaonic atoms X-ray spectroscopy at the DA桅NE collider of Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Frascati. The SDDs geometry and electric field configuration, combined with their read-out electronics, make these devices suitable to perform high prec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01572v1-abstract-full').style.display = 'inline'; document.getElementById('2111.01572v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.01572v1-abstract-full" style="display: none;"> A large-area Silicon Drift Detectors (SDDs) system has been developed by the SIDDHARTA2 collaboration for high precision light kaonic atoms X-ray spectroscopy at the DA桅NE collider of Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Frascati. The SDDs geometry and electric field configuration, combined with their read-out electronics, make these devices suitable to perform high precision light kaonic atoms spectroscopy measurements in the high background of the DA桅NE collider. This work presents the spectroscopic response of the SDDs system during the kaonic helium first exotic atoms run of SIDDHARTA-2, preliminary to the kaonic deuterium data taking campaign <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01572v1-abstract-full').style.display = 'none'; document.getElementById('2111.01572v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">submitted to Condensed Matter (MDPI) for special issue "High Precision X-ray Measurements 2021"</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2111.01448">arXiv:2111.01448</a> <span> [<a href="https://arxiv.org/pdf/2111.01448">pdf</a>, <a href="https://arxiv.org/format/2111.01448">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Reflection efficiency and spectra resolutions ray-tracing simulations for the VOXES HAPG crystal based Von Hamos spectrometer </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=De+Leo%2C+V">V. De Leo</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2111.01448v1-abstract-short" style="display: inline;"> The VOXES collaboration at INFN National Laboratories of Frascati developed a prototype of a high resolution Von Hamos X-ray spectrometer using HAPG (Highly Annealed Pyrolytic Graphite) mosaic crystals. This technology allows the employment of extended isotropic sources and could find application in several physics fields. The capability of the spectrometer to reach energy precision and resolution… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01448v1-abstract-full').style.display = 'inline'; document.getElementById('2111.01448v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2111.01448v1-abstract-full" style="display: none;"> The VOXES collaboration at INFN National Laboratories of Frascati developed a prototype of a high resolution Von Hamos X-ray spectrometer using HAPG (Highly Annealed Pyrolytic Graphite) mosaic crystals. This technology allows the employment of extended isotropic sources and could find application in several physics fields. The capability of the spectrometer to reach energy precision and resolution below 1 and 10 eV, respectively, when used with wide sources have been already demonstrated. Recently, the response of this device, for a $蟻$ = 206.7 mm cylindrically bent HAPG crystal using $CuK伪_{1,2}$ and $FeK伪_{1,2}$ XRF lines, has been investigated in terms of reflection efficiency by a dedicated ray-tracing simulation. Details of the simulation procedure and the comparison with the experimental results are presented. This study is crucial in order to retrieve information on the spectrometer signal collection efficiency, especially in the energy range in which the standard calibration procedures cannot be applied. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2111.01448v1-abstract-full').style.display = 'none'; document.getElementById('2111.01448v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 November, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.12750">arXiv:2107.12750</a> <span> [<a href="https://arxiv.org/pdf/2107.12750">pdf</a>, <a href="https://arxiv.org/format/2107.12750">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.media.2021.102199">10.1016/j.media.2021.102199 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Optimisation of the event-based TOF filtered back-projection for online imaging in total-body J-PET </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shopa%2C+R+Y">R. Y. Shopa</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Kopka%2C+P">P. Kopka</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Shivani"> Shivani</a>, <a href="/search/physics?searchtype=author&query=St%C8%A9pie%C5%84%2C+E+L">E. L. St醛pie艅</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.12750v1-abstract-short" style="display: inline;"> We perform a parametric study of the newly developed time-of-flight (TOF) image reconstruction algorithm, proposed for the real-time imaging in total-body Jagiellonian PET (J-PET) scanners. The asymmetric 3D filtering kernel is applied at each most likely position of electron-positron annihilation, estimated from the emissions of back-to-back $纬$-photons. The optimisation of its parameters is stud… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.12750v1-abstract-full').style.display = 'inline'; document.getElementById('2107.12750v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.12750v1-abstract-full" style="display: none;"> We perform a parametric study of the newly developed time-of-flight (TOF) image reconstruction algorithm, proposed for the real-time imaging in total-body Jagiellonian PET (J-PET) scanners. The asymmetric 3D filtering kernel is applied at each most likely position of electron-positron annihilation, estimated from the emissions of back-to-back $纬$-photons. The optimisation of its parameters is studied using Monte Carlo simulations of a 1-mm spherical source, NEMA IEC and XCAT phantoms inside the ideal J-PET scanner. The combination of high-pass filters which included the TOF filtered back-projection (FBP), resulted in spatial resolution, 1.5 $\times$ higher in the axial direction than for the conventional 3D FBP. For realistic $10$-minute scans of NEMA IEC and XCAT, which require a trade-off between the noise and spatial resolution, the need for Gaussian TOF kernel components, coupled with median post-filtering, is demonstrated. The best sets of 3D filter parameters were obtained by the Nelder-Mead minimisation of the mean squared error between the resulting and reference images. The approach allows training the reconstruction algorithm for custom scans, using the IEC phantom, when the temporal resolution is below 50 ps. The image quality parameters, estimated for the best outcomes, were systematically better than for the non-TOF FBP. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.12750v1-abstract-full').style.display = 'none'; document.getElementById('2107.12750v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.01356">arXiv:2107.01356</a> <span> [<a href="https://arxiv.org/pdf/2107.01356">pdf</a>, <a href="https://arxiv.org/format/2107.01356">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6560/ac16bd">10.1088/1361-6560/ac16bd <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Simulating NEMA characteristics of the modular total-body J-PET scanner -- an economic total-body PET from plastic scintillators </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">Pawe艂 Moskal</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">Pawe艂 Kowalski</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R">Roman Shopa</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">Lech Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Baran%2C+J">Jakub Baran</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">Neha Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">Catalina Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">Eryk Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">Meysam Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">Kamil Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">Aleksander Gajos</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">Beatrix Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">Krzysztof Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁ukasz Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">Daria Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">Konrad Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Kopka%2C+P">Przemys艂aw Kopka</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">Gregorz Korcyl</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">Nikodem Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">Wojciech Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">Ewelina Kubicz</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Szymon Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Parzych%2C+S">Szymon Parzych</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">Juhi Raj</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">Sushil Sharma</a> , et al. (4 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2107.01356v1-abstract-short" style="display: inline;"> The purpose of the presented research is estimation of the performance characteristics of the economic Total-Body Jagiellonian-PET system (TB-J-PET) constructed from plastic scintillators. The characteristics are estimated according to the NEMA NU-2-2018 standards utilizing the GATE package. The simulated detector consists of 24 modules, each built out of 32 plastic scintillator strips (each with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.01356v1-abstract-full').style.display = 'inline'; document.getElementById('2107.01356v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.01356v1-abstract-full" style="display: none;"> The purpose of the presented research is estimation of the performance characteristics of the economic Total-Body Jagiellonian-PET system (TB-J-PET) constructed from plastic scintillators. The characteristics are estimated according to the NEMA NU-2-2018 standards utilizing the GATE package. The simulated detector consists of 24 modules, each built out of 32 plastic scintillator strips (each with cross section of 6 mm times 30 mm and length of 140 cm or 200 cm) arranged in two layers in regular 24-sided polygon circumscribing a circle with the diameter of 78.6 cm. For the TB-J-PET with an axial field-of-view (AFOV) of 200 cm, a spatial resolutions of 3.7 mm (transversal) and 4.9 mm (axial) are achieved. The NECR peak of 630 kcps is expected at 30 kBq/cc activity concentration and the sensitivity at the center amounts to 38 cps/kBq. The SF is estimated to 36.2 %. The values of SF and spatial resolution are comparable to those obtained for the state-of-the-art clinical PET scanners and the first total-body tomographs: uExplorer and PennPET. With respect to the standard PET systems with AFOV in the range from 16 cm to 26 cm, the TB-J-PET is characterized by an increase in NECR approximately by factor of 4 and by the increase of the whole-body sensitivity by factor of 12.6 to 38. The TOF resolution for the TB-J-PET is expected to be at the level of CRT=240 ps (FWHM). For the TB-J-PET with an axial field-of-view (AFOV) of 140 cm, an image quality of the reconstructed images of a NEMA IEC phantom was presented with a contrast recovery coefficient (CRC) and a background variability parameters. The increase of the whole-body sensitivity and NECR estimated for the TB-J-PET with respect to current commercial PET systems makes the TB-J-PET a promising cost-effective solution for the broad clinical applications of total-body PET scanners. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.01356v1-abstract-full').style.display = 'none'; document.getElementById('2107.01356v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 July, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">31 pages, 11 figures, 6 tables, submitted to Physics in Medicine and Biology 2021</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.10868">arXiv:2008.10868</a> <span> [<a href="https://arxiv.org/pdf/2008.10868">pdf</a>, <a href="https://arxiv.org/format/2008.10868">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TIM.2020.3018515">10.1109/TIM.2020.3018515 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Synchronisation and calibration of the 24-modules J-PET prototype with 300~mm axial field of view </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Bednarski%2C+T">T. Bednarski</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Chhokar%2C+J">J. Chhokar</a>, <a href="/search/physics?searchtype=author&query=Ba%C5%82a%2C+M">M. Ba艂a</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">N. Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Karimi%2C+H">H. Karimi</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a> , et al. (14 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2008.10868v1-abstract-short" style="display: inline;"> Research conducted in the framework of the J-PET project aims to develop a cost-effective total-body positron emission tomography scanner. As a first step on the way to construct a full-scale J-PET tomograph from long strips of plastic scintillators, a 24-strip prototype was built and tested. The prototype consists of detection modules arranged axially forming a cylindrical diagnostic chamber with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.10868v1-abstract-full').style.display = 'inline'; document.getElementById('2008.10868v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.10868v1-abstract-full" style="display: none;"> Research conducted in the framework of the J-PET project aims to develop a cost-effective total-body positron emission tomography scanner. As a first step on the way to construct a full-scale J-PET tomograph from long strips of plastic scintillators, a 24-strip prototype was built and tested. The prototype consists of detection modules arranged axially forming a cylindrical diagnostic chamber with the inner diameter of 360 mm and the axial field-of-view of 300 mm. Promising perspectives for a low-cost construction of a total-body PET scanner are opened due to an axial arrangement of strips of plastic scintillators, wchich have a small light attenuation, superior timing properties, and the possibility of cost-effective increase of the axial field-of-view. The presented prototype comprises dedicated solely digital front-end electronic circuits and a triggerless data acquisition system which required development of new calibration methods including time, thresholds and gain synchronization. The system and elaborated calibration methods including first results of the 24-module J-PET prototype are presented and discussed. The achieved coincidence resolving time equals to CRT = 490 $\pm$ 9 ps. This value can be translated to the position reconstruction accuracy $蟽(螖l) =$ 18 mm which is fairly position-independent. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.10868v1-abstract-full').style.display = 'none'; document.getElementById('2008.10868v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Accepted for publication in IEEE Transactions on Instrumentation and Measurement</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.05472">arXiv:2008.05472</a> <span> [<a href="https://arxiv.org/pdf/2008.05472">pdf</a>, <a href="https://arxiv.org/format/2008.05472">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/15/10/P10010">10.1088/1748-0221/15/10/P10010 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Characterization of the SIDDHARTA-2 luminosity monitor </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Skurzok%2C+M">M. Skurzok</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">S. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Baniahmad%2C+A">A. Baniahmad</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Carminati%2C+M">M. Carminati</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Fabbietti%2C+L">L. Fabbietti</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Iwasaki%2C+M">M. Iwasaki</a>, <a href="/search/physics?searchtype=author&query=Sandri%2C+P+L">P. Levi Sandri</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K. Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Sgaramella%2C+F">F. Sgaramella</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">H. Shi</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2008.05472v3-abstract-short" style="display: inline;"> A luminosity monitor, based on plastic scintillator detectors, has been developed for the SIDDHARTA-2 experiment aiming to perform high precision measurements of kaonic atoms and was installed in 2020 on the DAFNE $e^+e^-$ collider at LNF (Laboratori Nazionali di Frascati, INFN). The main goal of this system is to provide the~instantaneous and integrated luminosity of the DAFNE facility by measuri… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.05472v3-abstract-full').style.display = 'inline'; document.getElementById('2008.05472v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.05472v3-abstract-full" style="display: none;"> A luminosity monitor, based on plastic scintillator detectors, has been developed for the SIDDHARTA-2 experiment aiming to perform high precision measurements of kaonic atoms and was installed in 2020 on the DAFNE $e^+e^-$ collider at LNF (Laboratori Nazionali di Frascati, INFN). The main goal of this system is to provide the~instantaneous and integrated luminosity of the DAFNE facility by measuring the rate of $K^+K^-$ correlated pairs emitted by the phi meson decay. This task requires an accurate timing of the DAQ signals, as well as timing resolution below 1ns, in order to disentangle the $K^\pm$ signals from the background minimum ionizing particles (MIPs) produced during the $e^+e^-$ collisions at DAFNE. In this paper the luminosity monitor concept as well as its laboratory characterization and the first results inside DAFNE are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.05472v3-abstract-full').style.display = 'none'; document.getElementById('2008.05472v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 October, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Published in JINST</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2006.07467">arXiv:2006.07467</a> <span> [<a href="https://arxiv.org/pdf/2006.07467">pdf</a>, <a href="https://arxiv.org/format/2006.07467">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2021.165452">10.1016/j.nima.2021.165452 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The J-PET detector -- a tool for precision studies of ortho-positronium decays </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Bass%2C+S+D">S. D. Bass</a>, <a href="/search/physics?searchtype=author&query=Chhokar%2C+J">J. Chhokar</a>, <a href="/search/physics?searchtype=author&query=Chug%2C+N">N. Chug</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">J. Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Karimi%2C+H">H. Karimi</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Kopka%2C+P">P. Kopka</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a> , et al. (19 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2006.07467v3-abstract-short" style="display: inline;"> The J-PET tomograph is constructed from plastic scintillator strips arranged axially in concentric cylindrical layers. It enables investigations of positronium decays by measurement of the time, position, polarization and energy deposited by photons in the scintillators, in contrast to studies conducted so far with crystal and semiconductor based detection systems where the key selection of events… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.07467v3-abstract-full').style.display = 'inline'; document.getElementById('2006.07467v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2006.07467v3-abstract-full" style="display: none;"> The J-PET tomograph is constructed from plastic scintillator strips arranged axially in concentric cylindrical layers. It enables investigations of positronium decays by measurement of the time, position, polarization and energy deposited by photons in the scintillators, in contrast to studies conducted so far with crystal and semiconductor based detection systems where the key selection of events is based on the measurement of the photons energies. In this article we show that the J-PET tomograph system is capable of exclusive measurements of the decays of ortho-positronium atoms. We present the first positronium production results, its lifetime distribution measurements and discuss estimation of the influence of various background sources. The tomograph s performance demonstrated here makes it suitable for precision studies of positronium decays including entanglement of the final state photons, positron annihilation lifetime spectroscopy plus molecular imaging diagnostics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2006.07467v3-abstract-full').style.display = 'none'; document.getElementById('2006.07467v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 June, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">12 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.12742">arXiv:2004.12742</a> <span> [<a href="https://arxiv.org/pdf/2004.12742">pdf</a>, <a href="https://arxiv.org/format/2004.12742">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Hit-time and hit-position reconstruction in strips of plastic scintillators using multi-threshold readouts </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sharma%2C+N+G">N. G. Sharma</a>, <a href="/search/physics?searchtype=author&query=Silarski%2C+M">M. Silarski</a>, <a href="/search/physics?searchtype=author&query=Chhokar%2C+J">J. Chhokar</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Farbaniec%2C+K">K. Farbaniec</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a> , et al. (10 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2004.12742v1-abstract-short" style="display: inline;"> In this article, a new method for the reconstruction of hit-position and hit-time of photons in long scintillator detectors is investigated. This research is motivated by the recent development of the positron emission tomography scanners based on plastic scintillators. The proposed method constitutes a new way of signal processing in Multi-Voltage-Technique. It is based on the determination of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.12742v1-abstract-full').style.display = 'inline'; document.getElementById('2004.12742v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.12742v1-abstract-full" style="display: none;"> In this article, a new method for the reconstruction of hit-position and hit-time of photons in long scintillator detectors is investigated. This research is motivated by the recent development of the positron emission tomography scanners based on plastic scintillators. The proposed method constitutes a new way of signal processing in Multi-Voltage-Technique. It is based on the determination of the degree of similarity between the registered signals and the synchronized model signals stored in a library. The library was established for a set of well defined hit-positions along the length of the scintillator. The Mahalanobis distance was used as a measure of similarity between the two compared signals. The method was validated on the experimental data measured using two-strips J-PET prototype with dimensions of 5x9x300 mm$^3$. The obtained Time-of-Flight (TOF) and spatial resolutions amount to 325~ps (FWHM) and 25~mm (FWHM), respectively. The TOF resolution was also compared to the results of an analogous study done using Linear Fitting method. The best TOF resolution was obtained with this method at four pre-defined threshold levels which was comparable to the resolution achieved from the Mahalanobis distance at two pre-defined threshold levels. Although the algorithm of Linear Fitting method is much simpler to apply than the Mahalanobis method, the application of the Mahalanobis distance requires a lower number of applied threshold levels and, hence, decreases the costs of electronics used in PET scanner. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.12742v1-abstract-full').style.display = 'none'; document.getElementById('2004.12742v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.12059">arXiv:1911.12059</a> <span> [<a href="https://arxiv.org/pdf/1911.12059">pdf</a>, <a href="https://arxiv.org/format/1911.12059">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Estimating relationship between the Time Over Threshold and energy loss by photons in plastic scintillators used in the J-PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Chhokar%2C+J">J. Chhokar</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dadgar%2C+M">M. Dadgar</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">J. Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">N. Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasinska%2C+B">B. Jasinska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Karimi%2C+H">H. Karimi</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a> , et al. (14 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1911.12059v1-abstract-short" style="display: inline;"> Time-Over-Threshold (TOT) technique is being used widely due to its implications in developing the multi channel readouts mainly when fast signal processing is required. Using TOT technique as a measure of energy loss instead of charge integration methods significantly reduces the signals readout cost by combining the time and energy information. Therefore, this approach can potentially be used in… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.12059v1-abstract-full').style.display = 'inline'; document.getElementById('1911.12059v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.12059v1-abstract-full" style="display: none;"> Time-Over-Threshold (TOT) technique is being used widely due to its implications in developing the multi channel readouts mainly when fast signal processing is required. Using TOT technique as a measure of energy loss instead of charge integration methods significantly reduces the signals readout cost by combining the time and energy information. Therefore, this approach can potentially be used in J-PET tomograph which is build from plastic scintillators characterized by fast light signals. The drawback in adopting this technique is lying in the non-linear correlation between input energy loss and TOT of the signal. The main motivation behind this work is to develop the relationship between TOT and energy loss and validate it with the J-PET tomograph. The experiment was performed using the $^{22}$Na beta emitter source placed in the center of the J-PET tomograph. One can obtain primary photons of two different energies: 511 keV photon from the annihilation of positron (direct annihilation or through the formation of para-Positronim atom or pick-off process of ortho-Positronium atoms), and 1275 keV prompt photon. This allows to study the correlation between TOT values and energy loss for energy range up to 1000 keV. As the photon interacts dominantly via Compton scattering inside the plastic scintillator, there is no direct information of primary photon energy. However, using the J-PET geometry one can measure the scattering angle of the interacting photon. Since, $^{22}$Na source emits photons of two different energies, it is required to know unambiguously the energy of incident photons and its corresponding scattering angle for the estimation of energy deposition. In this work, the relationship between Time Over Threshold and energy loss by interacting photons inside the plastic scintillators used in J-PET scanner is established for a energy deposited range 100-1000 keV <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.12059v1-abstract-full').style.display = 'none'; document.getElementById('1911.12059v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1911.06841">arXiv:1911.06841</a> <span> [<a href="https://arxiv.org/pdf/1911.06841">pdf</a>, <a href="https://arxiv.org/format/1911.06841">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Performance assessment of the 2$纬$ positronium imaging with the total-body PET scanners </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Bura%2C+Z">Z. Bura</a>, <a href="/search/physics?searchtype=author&query=Chhokar%2C+C">C. Chhokar</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=1%2C+M+D">M. Dadgar 1</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajewski%2C+J">J. Gajewski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+A">A. Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Karimi%2C+H">H. Karimi</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Ma%C5%82czak%2C+P">P. Ma艂czak</a> , et al. (17 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1911.06841v1-abstract-short" style="display: inline;"> In living organisms the positron-electron annihilation (occurring during the PET imaging) proceeds in about 30% via creation of a metastable ortho-positronium atom. In the tissue, due to the pick-off and conversion processes, over 98% of ortho-positronia annihilate into two 511~keV photons. In this article we assess the feasibility for reconstruction of the mean ortho-positronium lifetime image ba… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.06841v1-abstract-full').style.display = 'inline'; document.getElementById('1911.06841v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1911.06841v1-abstract-full" style="display: none;"> In living organisms the positron-electron annihilation (occurring during the PET imaging) proceeds in about 30% via creation of a metastable ortho-positronium atom. In the tissue, due to the pick-off and conversion processes, over 98% of ortho-positronia annihilate into two 511~keV photons. In this article we assess the feasibility for reconstruction of the mean ortho-positronium lifetime image based on annihilations into two photons. The main objectives of this work include: (i) estimation of the sensitivity of the total-body PET scanners for the ortho-positronium mean lifetime imaging using $2纬$ annihilations, and (ii) estimation of the spatial and time resolution of the ortho-positronium image as a function of the coincidence resolving time (CRT) of the scanner. Simulations are conducted assuming that radiopharmaceutical is labelled with $^{44}Sc$ isotope emitting one positron and one prompt gamma. The image is reconstructed on the basis of triple coincidence events. The ortho-positronium lifetime spectrum is determined for each voxel of the image. Calculations were performed for cases of total-body detectors build of (i) LYSO scintillators as used in the EXPLORER PET, and (ii) plastic scintillators as anticipated for the cost-effective total-body J-PET scanner. To assess the spatial and time resolution the three cases were considered assuming that CRT is equal to 140ps, 50ps and 10ps. The estimated total-body PET sensitivity for the registration and selection of image forming triple coincidences is larger by a factor of 12.2 (for LYSO PET) and by factor of 4.7 (for plastic PET) with respect to the sensitivity for the standard $2纬$ imaging by LYSO PET scanners with AFOV=20cm. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1911.06841v1-abstract-full').style.display = 'none'; document.getElementById('1911.06841v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 November, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.08861">arXiv:1903.08861</a> <span> [<a href="https://arxiv.org/pdf/1903.08861">pdf</a>, <a href="https://arxiv.org/format/1903.08861">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1742-6596/1275/1/012028">10.1088/1742-6596/1275/1/012028 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> VIP2 in LNGS - Testing the Pauli Exclusion Principle for electrons with high sensitivity </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Pichler%2C+A">A. Pichler</a>, <a href="/search/physics?searchtype=author&query=Amirkhani%2C+A">A. Amirkhani</a>, <a href="/search/physics?searchtype=author&query=Bartalucci%2C+S">S. Bartalucci</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bertolucci%2C+S">S. Bertolucci</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+M">M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Egger%2C+J+-">J. -P. Egger</a>, <a href="/search/physics?searchtype=author&query=Fiorini%2C+C">C. Fiorini</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Laubenstein%2C+M">M. Laubenstein</a>, <a href="/search/physics?searchtype=author&query=Milotti%2C+E">E. Milotti</a>, <a href="/search/physics?searchtype=author&query=Milucci%2C+M">M. Milucci</a>, <a href="/search/physics?searchtype=author&query=Pietreanu%2C+D">D. Pietreanu</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K. Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">H. Shi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+D">D. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1903.08861v1-abstract-short" style="display: inline;"> The VIP2 (VIolation of the Pauli Exclusion Principle) experiment at the Gran Sasso underground laboratory (LNGS) is searching for possible violations of standard quantum mechanics predictions in atoms at very high sensitivity. We investigate atomic transitions with precision X-ray spectroscopy in order to test the Pauli Exclusion Principle (PEP) and therefore the related spin-statistics theorem. W… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.08861v1-abstract-full').style.display = 'inline'; document.getElementById('1903.08861v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.08861v1-abstract-full" style="display: none;"> The VIP2 (VIolation of the Pauli Exclusion Principle) experiment at the Gran Sasso underground laboratory (LNGS) is searching for possible violations of standard quantum mechanics predictions in atoms at very high sensitivity. We investigate atomic transitions with precision X-ray spectroscopy in order to test the Pauli Exclusion Principle (PEP) and therefore the related spin-statistics theorem. We will present our experimental method for the search for "anomalous" (i.e. Pauli-forbidden) X-ray transitions in copper atoms, produced by "new" electrons, which could have tiny probability to undergo Pauli-forbidden transition to the ground state already occupied by two electrons. We will describe the VIP2 experimental setup, which is taking data at LNGS presently. The goal of VIP2 is to test the PEP for electrons with unprecedented accuracy, down to a limit in the probability that PEP is violated at the level of 10$^{-31}$. We will present current experimental results and discuss implications of a possible violation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.08861v1-abstract-full').style.display = 'none'; document.getElementById('1903.08861v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Proceedings of DICE 2018 Conference</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.02826">arXiv:1903.02826</a> <span> [<a href="https://arxiv.org/pdf/1903.02826">pdf</a>, <a href="https://arxiv.org/format/1903.02826">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> Development of a compact HAPG crystal Von Hamos X-ray spectrometer forextended and diffused sources </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Zmeskal%2C+J">J. Zmeskal</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1903.02826v1-abstract-short" style="display: inline;"> Bragg spectroscopy is one of the best established experimental methods for high energy resolution X-ray measurements; however, this technique is limited to the measurement of photons producedfrom well collimated (tens of microns) or point-like sources and becomes quite inefficient for photonscoming from extended and diffused sources. The possibility to perform simultaneous measurementsof several e… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.02826v1-abstract-full').style.display = 'inline'; document.getElementById('1903.02826v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.02826v1-abstract-full" style="display: none;"> Bragg spectroscopy is one of the best established experimental methods for high energy resolution X-ray measurements; however, this technique is limited to the measurement of photons producedfrom well collimated (tens of microns) or point-like sources and becomes quite inefficient for photonscoming from extended and diffused sources. The possibility to perform simultaneous measurementsof several energies is strongly demanded when low rate signals are expected and single angular scansrequire long exposure times. A prototype of a high resolution and high precision X-ray spectrometerworking also with extended isotropic sources, has been developed by the VOXES collaboration atINFN Laboratories of Frascati, using Highly Annealed Pyrolitic Graphite (HAPG) crystals in a semi- Von Hamos configuration, in which the position detector is rotated with respect to thestandard Von Hamos one, to increase the dynamic energy range. The aim is to deliver a cost effectivesystem having an energy resolution at the level of eV for X-ray energies from about 2 keV up to tensof keV, able to perform sub-eV precision measurements with non point-like sources. The proposedspectrometer has possible applications in several fields, going from fundamental physics to quantummechanics tests, synchrotron radiation and X-FEL applications, astronomy, medicine and industry.In particular, this technique is fundamental for a series of nuclear physics measurements like, forexample, the energies of the exotic atoms radiative transitions which allow to extract fundamentalparameters in the low energy QCD in the strangeness sector. In this work, the working principleof the spectrometer is presented, together with the tests and the results, in terms of resolution andsource, size obtained for Fe(K\alpha1,2), Cu(K\alpha1,2), Ni(K尾), Zn(K\alpha1,2), Mo(K\alpha1,2) and Nb(K尾)lines. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.02826v1-abstract-full').style.display = 'none'; document.getElementById('1903.02826v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.06204">arXiv:1901.06204</a> <span> [<a href="https://arxiv.org/pdf/1901.06204">pdf</a>, <a href="https://arxiv.org/format/1901.06204">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10751-019-1629-0">10.1007/s10751-019-1629-0 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Simulation studies of annihilation-photon's polarisation via Compton scattering with the J-PET tomograph </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">N. Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a> , et al. (10 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1901.06204v1-abstract-short" style="display: inline;"> J-PET is the first positron-emission tomograph (PET) constructed from plastic scintillators. It was optimized for the detection of photons from electron-positron annihilation. Such photons, having an energy of 511 keV, interact with electrons in plastic scintillators predominantly via the Compton effect. Compton scattering is at most probable at an angle orthogonal to the electric field vector of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.06204v1-abstract-full').style.display = 'inline'; document.getElementById('1901.06204v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.06204v1-abstract-full" style="display: none;"> J-PET is the first positron-emission tomograph (PET) constructed from plastic scintillators. It was optimized for the detection of photons from electron-positron annihilation. Such photons, having an energy of 511 keV, interact with electrons in plastic scintillators predominantly via the Compton effect. Compton scattering is at most probable at an angle orthogonal to the electric field vector of the interacting photon. Thus registration of multiple photon scatterings with J-PET enables to determine the polarization of the annihilation photons. In this contribution we present estimates on the physical limitation in the accuracy of the polarization determination of $511$~keV photons with the J-PET detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.06204v1-abstract-full').style.display = 'none'; document.getElementById('1901.06204v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Submitted to Hyperfine Interactions</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.10397">arXiv:1809.10397</a> <span> [<a href="https://arxiv.org/pdf/1809.10397">pdf</a>, <a href="https://arxiv.org/format/1809.10397">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-018-6461-1">10.1140/epjc/s10052-018-6461-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Feasibility studies of the polarization of photons beyond the optical wavelength regime with the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Ba%C5%82a%2C+M">M. Ba艂a</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Del+Grande%2C+R">R. Del Grande</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+L">L. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.10397v1-abstract-short" style="display: inline;"> J-PET is a detector optimized for registration of photons from the electron-positron annihilation via plastic scintillators where photons interact predominantly via Compton scattering. Registration of both primary and scattered photons enables to determinate the linear polarization of the primary photon on the event by event basis with a certain probability. Here we present quantitative results on… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.10397v1-abstract-full').style.display = 'inline'; document.getElementById('1809.10397v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.10397v1-abstract-full" style="display: none;"> J-PET is a detector optimized for registration of photons from the electron-positron annihilation via plastic scintillators where photons interact predominantly via Compton scattering. Registration of both primary and scattered photons enables to determinate the linear polarization of the primary photon on the event by event basis with a certain probability. Here we present quantitative results on the feasibility of such polarization measurements of photons from the decay of positronium with the J-PET and explore the physical limitations for the resolution of the polarization determination of 511 keV photons via Compton scattering. For scattering angles of about 82 deg (where the best contrast for polarization measurement is theoretically predicted) we find that the single event resolution for the determination of the polarization is about 40 deg (predominantly due to properties of the Compton effect). However, for samples larger than ten thousand events the J-PET is capable of determining relative average polarization of these photons with the precision of about few degrees. The obtained results open new perspectives for studies of various physics phenomena such as quantum entanglement and tests of discrete symmetries in decays of positronium and extend the energy range of polarization measurements by five orders of magnitude beyond the optical wavelength regime. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.10397v1-abstract-full').style.display = 'none'; document.getElementById('1809.10397v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 27 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 14 figures, submitted to EPJ C</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.05175">arXiv:1809.05175</a> <span> [<a href="https://arxiv.org/pdf/1809.05175">pdf</a>, <a href="https://arxiv.org/format/1809.05175">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10751-018-1517-z">10.1007/s10751-018-1517-z <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Commissioning of the J-PET detector in view of the positron annihilation lifetime spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">N. Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+K+K+%C5%81">K. Kacprzak 艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Rakoczy%2C+K">K. Rakoczy</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.05175v1-abstract-short" style="display: inline;"> The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET device built from plastic scintillators. It is a multi-purpose detector designed for medical imaging and for studies of properties of positronium atoms in porous matter and in living organisms. In this article we report on the commissioning of the J-PET detector in view of studies of positronium decays. We present results of ana… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.05175v1-abstract-full').style.display = 'inline'; document.getElementById('1809.05175v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.05175v1-abstract-full" style="display: none;"> The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET device built from plastic scintillators. It is a multi-purpose detector designed for medical imaging and for studies of properties of positronium atoms in porous matter and in living organisms. In this article we report on the commissioning of the J-PET detector in view of studies of positronium decays. We present results of analysis of the positron lifetime measured in the porous polymer. The obtained results prove that J-PET is capable of performing simultaneous imaging of the density distribution of annihilation points as well as positron annihilation lifetime spectroscopy. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.05175v1-abstract-full').style.display = 'none'; document.getElementById('1809.05175v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.00847">arXiv:1809.00847</a> <span> [<a href="https://arxiv.org/pdf/1809.00847">pdf</a>, <a href="https://arxiv.org/format/1809.00847">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s10751-018-1527-x">10.1007/s10751-018-1527-x <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A feasibility study of the time reversal violation test based on polarization of annihilation photons from the decay of ortho-Positronium with the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwinski%2C+E">E. Czerwinski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">N. Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kaplon%2C+L">L. Kaplon</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Sz. Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Palka%2C+M">M. Palka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Niedzwiecka%2C+M">M. Pawlik-Niedzwiecka</a>, <a href="/search/physics?searchtype=author&query=Raczynski%2C+L">L. Raczynski</a>, <a href="/search/physics?searchtype=author&query=Rakoczy%2C+K">K. Rakoczy</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.00847v1-abstract-short" style="display: inline;"> The Jagiellonian Positron Emission Tomograph (J-PET) is a novel de- vice being developed at Jagiellonian University in Krakow, Poland based on or- ganic scintillators. J-PET is an axially symmetric and high acceptance scanner that can be used as a multi-purpose detector system. It is well suited to pur- sue tests of discrete symmetries in decays of positronium in addition to medical imaging. J-PET… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.00847v1-abstract-full').style.display = 'inline'; document.getElementById('1809.00847v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.00847v1-abstract-full" style="display: none;"> The Jagiellonian Positron Emission Tomograph (J-PET) is a novel de- vice being developed at Jagiellonian University in Krakow, Poland based on or- ganic scintillators. J-PET is an axially symmetric and high acceptance scanner that can be used as a multi-purpose detector system. It is well suited to pur- sue tests of discrete symmetries in decays of positronium in addition to medical imaging. J-PET enables the measurement of both momenta and the polarization vectors of annihilation photons. The latter is a unique feature of the J-PET detector which allows the study of time reversal symmetry violation operator which can be constructed solely from the annihilation photons momenta before and after the scattering in the detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.00847v1-abstract-full').style.display = 'none'; document.getElementById('1809.00847v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 September, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.00241">arXiv:1808.00241</a> <span> [<a href="https://arxiv.org/pdf/1808.00241">pdf</a>, <a href="https://arxiv.org/format/1808.00241">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6560/aad29b">10.1088/1361-6560/aad29b <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Estimating the NEMA characteristics of the J-PET tomograph using the GATE package </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">Pawe艂 Kowalski</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">Wojciech Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R">Roman Shopa</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">Lech Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">Konrad Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">Catalina Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">Eryk Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">Kamil Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">Aleksander Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">Marek Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">Neha Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">Beatrix Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">Bo偶ena Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁ukasz Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kami%C5%84ska%2C+D">Daria Kami艅ska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">Grzegorz Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">Tomasz Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">Wojciech Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">Ewelina Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">Muhsin Mohammed</a>, <a href="/search/physics?searchtype=author&query=Niedzwiecki%2C+S">Szymon Niedzwiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">Marek Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">Monika Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">Juhi Raj</a>, <a href="/search/physics?searchtype=author&query=Rakoczy%2C+K">Kamil Rakoczy</a> , et al. (8 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1808.00241v1-abstract-short" style="display: inline;"> The novel whole-body PET system based on plastic scintillators is developed by the {J-PET} Collaboration. It consists of plastic scintillator strips arranged axially in the form of a cylinder, allowing the cost-effective construction of the total-body PET. In order to determine properties of the scanner prototype and optimize its geometry, advanced computer simulations using the GATE software were… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.00241v1-abstract-full').style.display = 'inline'; document.getElementById('1808.00241v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.00241v1-abstract-full" style="display: none;"> The novel whole-body PET system based on plastic scintillators is developed by the {J-PET} Collaboration. It consists of plastic scintillator strips arranged axially in the form of a cylinder, allowing the cost-effective construction of the total-body PET. In order to determine properties of the scanner prototype and optimize its geometry, advanced computer simulations using the GATE software were performed. The spatial resolution, the sensitivity, the scatter fraction and the noise equivalent count rate were estimated according to the NEMA norm as a function of the length of the tomograph, number of the detection layers, diameter of the tomographic chamber and for various types of the applied readout. For the single-layer geometry with the diameter of 85 cm, strip length of 100 cm, cross-section of 4 mm x 20 mm and silicon photomultipliers with the additional layer of wavelength shifter as the readout, the spatial resolution (FWHM) in the centre of the scanner is equal to 3 mm (radial, tangential) and 6 mm (axial). For the analogous double-layer geometry with the same readout, diameter and scintillator length, with the strip cross-section of 7 mm x 20 mm, the NECR peak of 300 kcps was reached at 40 kBq/cc activity concentration, the scatter fraction is estimated to about 35% and the sensitivity at the centre amounts to 14.9 cps/kBq. Sensitivity profiles were also determined. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.00241v1-abstract-full').style.display = 'none'; document.getElementById('1808.00241v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Kowalski, Pawe艂, et al. "Estimation of the NEMA characteristics of the J-PET tomograph using the GATE package." Physics in medicine and biology (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.10754">arXiv:1807.10754</a> <span> [<a href="https://arxiv.org/pdf/1807.10754">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1109/TMI.2018.2837741">10.1109/TMI.2018.2837741 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evaluation of Single-Chip, Real-Time Tomographic Data Processing on FPGA - SoC Devices </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Flak%2C+B">B. Flak</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kajetanowicz%2C+M">M. Kajetanowicz</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Rajda%2C+P">P. Rajda</a> , et al. (14 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1807.10754v1-abstract-short" style="display: inline;"> A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian PET (J-PET) scanner as an example. We propose a system in which there is no need for powerful, local to the scanner processing facility, capable to reconstruct images on the fly. Instead we introduce a Field Programmable Gate Array (FPGA) System-on-Chip (SoC) platform connected directly to data… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.10754v1-abstract-full').style.display = 'inline'; document.getElementById('1807.10754v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.10754v1-abstract-full" style="display: none;"> A novel approach to tomographic data processing has been developed and evaluated using the Jagiellonian PET (J-PET) scanner as an example. We propose a system in which there is no need for powerful, local to the scanner processing facility, capable to reconstruct images on the fly. Instead we introduce a Field Programmable Gate Array (FPGA) System-on-Chip (SoC) platform connected directly to data streams coming from the scanner, which can perform event building, filtering, coincidence search and Region-Of-Response (ROR) reconstruction by the programmable logic and visualization by the integrated processors. The platform significantly reduces data volume converting raw data to a list-mode representation, while generating visualization on the fly. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.10754v1-abstract-full').style.display = 'none'; document.getElementById('1807.10754v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">IEEE Transactions on Medical Imaging, 17 May 2018</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.02182">arXiv:1807.02182</a> <span> [<a href="https://arxiv.org/pdf/1807.02182">pdf</a>, <a href="https://arxiv.org/format/1807.02182">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2018.09.087">10.1016/j.nima.2018.09.087 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Detector setup of the VIP2 Underground Experiment at LNGS </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Pichler%2C+A">A. Pichler</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">H. Shi</a>, <a href="/search/physics?searchtype=author&query=Milotti%2C+E">E. Milotti</a>, <a href="/search/physics?searchtype=author&query=Bartalucci%2C+S">S. Bartalucci</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bertolucci%2C+S">S. Bertolucci</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+A+M">A. M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Di+Matteo%2C+S">S. Di Matteo</a>, <a href="/search/physics?searchtype=author&query=Egger%2C+J+-">J. -P. Egger</a>, <a href="/search/physics?searchtype=author&query=Elnaggar%2C+H">H. Elnaggar</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Laubenstein%2C+M">M. Laubenstein</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Pietreanu%2C+D">D. Pietreanu</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K. Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+D+L">D. L. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sperandio%2C+L">L. Sperandio</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1807.02182v1-abstract-short" style="display: inline;"> The VIP2 experiment tests the Pauli Exclusion Principle with high sensitivity, by searching for Pauli-forbidden atomic transitions from the 2p to the 1s shell in copper at about 8keV. The transition energy of Pauli-forbidden K X-rays is shifted by about 300 eV with respect to the normal allowed K line. This energy difference can be resolved using Silicon Drift Detectors. The data for this experime… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.02182v1-abstract-full').style.display = 'inline'; document.getElementById('1807.02182v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.02182v1-abstract-full" style="display: none;"> The VIP2 experiment tests the Pauli Exclusion Principle with high sensitivity, by searching for Pauli-forbidden atomic transitions from the 2p to the 1s shell in copper at about 8keV. The transition energy of Pauli-forbidden K X-rays is shifted by about 300 eV with respect to the normal allowed K line. This energy difference can be resolved using Silicon Drift Detectors. The data for this experiment is taken in the Gran Sasso underground laboratory (LNGS), which provides shielding from cosmic radiation. An overview of the detection system of the VIP2 experiment will be given. This includes the Silicon Drift Detectors used as X-ray detectors which provide an energy resolution of around 150 eV at 6 keV and timing information for active shielding. Furthermore, the low maintenance requirement makes them excellent X-ray detectors for the use in an underground laboratory. The VIP2 setup will be discussed which consists of a high current target system and a passive as well as an active shielding system using plastic scintillators read out by Silicon Photomultipliers. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.02182v1-abstract-full').style.display = 'none'; document.getElementById('1807.02182v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1805.11696">arXiv:1805.11696</a> <span> [<a href="https://arxiv.org/pdf/1805.11696">pdf</a>, <a href="https://arxiv.org/format/1805.11696">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1361-6560/aafe20">10.1088/1361-6560/aafe20 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Feasibility study of the positronium imaging with the J-PET tomograph </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Moskal%2C+P">P. Moskal</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Shivani"> Shivani</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R+Y">R. Y. Shopa</a> , et al. (5 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1805.11696v3-abstract-short" style="display: inline;"> A detection system of the conventional PET tomograph is set-up to record data from e+ e- annihilation into two photons with energy of 511 keV, and it gives information on the density distribution of a radiopharmaceutical in the body of the object. In this paper we explore the possibility of performing the three gamma photons imaging based on ortho-positronium annihilation, as well as the possibili… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.11696v3-abstract-full').style.display = 'inline'; document.getElementById('1805.11696v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1805.11696v3-abstract-full" style="display: none;"> A detection system of the conventional PET tomograph is set-up to record data from e+ e- annihilation into two photons with energy of 511 keV, and it gives information on the density distribution of a radiopharmaceutical in the body of the object. In this paper we explore the possibility of performing the three gamma photons imaging based on ortho-positronium annihilation, as well as the possibility of positronium mean lifetime imaging with the J-PET tomograph constructed from plastic scintillators. For this purposes simulations of the ortho-positronium formation and its annihilation into three photons were performed taking into account distributions of photons' momenta as predicted by the theory of quantum electrodynamics and the response of the J-PET tomograph. In order to test the proposed ortho-positronium lifetime image reconstruction method, we concentrate on the decay of the ortho-positronium into three photons and applications of radiopharmaceuticals labeled with isotopes emitting a prompt gamma quantum. The proposed method of imaging is based on the determination of hit-times and hit-positions of registered photons which enables the reconstruction of the time and position of the annihilation point as well as the lifetime of the ortho-positronium on an event-by-event basis. We have simulated the production of the positronium in a cylindrical phantom composed of a set of different materials in which the ortho-positronium lifetime varied from 2.0 ns to 3.0 ns, as expected for ortho-positronium created in the human body. The presented reconstruction method for total-body J-PET like detector allows to achieve a mean lifetime resolution of about 40 ps. Recent Positron Annihilation Lifetime Spectroscopy measurements of cancerous and healthy uterine tissues show that this sensitivity may allow to study the morphological changes in cell structures. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1805.11696v3-abstract-full').style.display = 'none'; document.getElementById('1805.11696v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 January, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 May, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">accepted in PMB (http://iopscience.iop.org/article/10.1088/1361-6560/aafe20)</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.07148">arXiv:1804.07148</a> <span> [<a href="https://arxiv.org/pdf/1804.07148">pdf</a>, <a href="https://arxiv.org/format/1804.07148">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Feasibility study of the time reversal symmetry tests in decays of metastable positronium atoms with the J-PET detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Gupta-Sharma%2C+N">N. Gupta-Sharma</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B+C">B. C. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kacprzak%2C+K">K. Kacprzak</a>, <a href="/search/physics?searchtype=author&query=Kap%C5%82on%2C+%C5%81">艁. Kap艂on</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krzemie%C5%84%2C+W">W. Krzemie艅</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">Sz. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Raj%2C+J">J. Raj</a>, <a href="/search/physics?searchtype=author&query=Rudy%2C+Z">Z. Rudy</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+S">S. Sharma</a>, <a href="/search/physics?searchtype=author&query=Shivani"> Shivani</a> , et al. (7 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1804.07148v1-abstract-short" style="display: inline;"> This article reports on the feasibility of testing of the symmetry under reversal in time in a purely leptonic system constituted by positronium atoms using the J-PET detector. The present state of T symmetry tests is discussed with an emphasis on the scarcely explored sector of leptonic systems. Two possible strategies of searching for manifestations of T violation in non-vanishing angular correl… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.07148v1-abstract-full').style.display = 'inline'; document.getElementById('1804.07148v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.07148v1-abstract-full" style="display: none;"> This article reports on the feasibility of testing of the symmetry under reversal in time in a purely leptonic system constituted by positronium atoms using the J-PET detector. The present state of T symmetry tests is discussed with an emphasis on the scarcely explored sector of leptonic systems. Two possible strategies of searching for manifestations of T violation in non-vanishing angular correlations of final state observables in the decays of metastable triplet states of positronium available with J-PET are proposed and discussed. Results of a pilot measurement with J-PET and assessment of its performance in reconstruction of three-photon decays are shown along with an analysis of its impact on the sensitivity of the detector for the determination of T -violation sensitive observables. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.07148v1-abstract-full').style.display = 'none'; document.getElementById('1804.07148v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 9 figures. Submitted to Advances in High Energy Physics</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1804.04446">arXiv:1804.04446</a> <span> [<a href="https://arxiv.org/pdf/1804.04446">pdf</a>, <a href="https://arxiv.org/format/1804.04446">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Atomic Physics">physics.atom-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-018-5802-4">10.1140/epjc/s10052-018-5802-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Experimental search for the violation of Pauli Exclusion Principle </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shi%2C+H">H. Shi</a>, <a href="/search/physics?searchtype=author&query=Milotti%2C+E">E. Milotti</a>, <a href="/search/physics?searchtype=author&query=Bartalucci%2C+S">S. Bartalucci</a>, <a href="/search/physics?searchtype=author&query=Bazzi%2C+M">M. Bazzi</a>, <a href="/search/physics?searchtype=author&query=Bertolucci%2C+S">S. Bertolucci</a>, <a href="/search/physics?searchtype=author&query=Bragadireanu%2C+A+M">A. M. Bragadireanu</a>, <a href="/search/physics?searchtype=author&query=Cargnelli%2C+M">M. Cargnelli</a>, <a href="/search/physics?searchtype=author&query=Clozza%2C+A">A. Clozza</a>, <a href="/search/physics?searchtype=author&query=De+Paolis%2C+L">L. De Paolis</a>, <a href="/search/physics?searchtype=author&query=Di+Matteo%2C+S">S. Di Matteo</a>, <a href="/search/physics?searchtype=author&query=Egger%2C+J+-">J. -P. Egger</a>, <a href="/search/physics?searchtype=author&query=Elnaggar%2C+H">H. Elnaggar</a>, <a href="/search/physics?searchtype=author&query=Guaraldo%2C+C">C. Guaraldo</a>, <a href="/search/physics?searchtype=author&query=Iliescu%2C+M">M. Iliescu</a>, <a href="/search/physics?searchtype=author&query=Laubenstein%2C+M">M. Laubenstein</a>, <a href="/search/physics?searchtype=author&query=Marton%2C+J">J. Marton</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Pichler%2C+A">A. Pichler</a>, <a href="/search/physics?searchtype=author&query=Pietreanu%2C+D">D. Pietreanu</a>, <a href="/search/physics?searchtype=author&query=Piscicchia%2C+K">K. Piscicchia</a>, <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+D+L">D. L. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Sperandio%2C+L">L. Sperandio</a>, <a href="/search/physics?searchtype=author&query=Doce%2C+O+V">O. Vazquez Doce</a> , et al. (3 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1804.04446v3-abstract-short" style="display: inline;"> The VIolation of Pauli exclusion principle -2 experiment, or VIP-2 experiment, at the Laboratori Nazionali del Gran Sasso searches for x-rays from copper atomic transition that are prohibited by the Pauli Exclusion Principle. Candidate direct violation events come from the transition of a $2p$ electron to the ground state that is already occupied by two electrons. From the first data taking campai… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.04446v3-abstract-full').style.display = 'inline'; document.getElementById('1804.04446v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1804.04446v3-abstract-full" style="display: none;"> The VIolation of Pauli exclusion principle -2 experiment, or VIP-2 experiment, at the Laboratori Nazionali del Gran Sasso searches for x-rays from copper atomic transition that are prohibited by the Pauli Exclusion Principle. Candidate direct violation events come from the transition of a $2p$ electron to the ground state that is already occupied by two electrons. From the first data taking campaign in 2016 of VIP-2 experiment, we determined a best upper limit of 3.4 $\times$ 10$^{-29}$ for the probability that such a violation exists. Significant improvement in the control of the experimental systematics was also achieved, although not explicitly reflected in the improved upper limit. By introducing a simultaneous spectral fit of the signal and background data in the analysis, we succeeded in taking into account systematic errors that could not be evaluated previously in this type of measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1804.04446v3-abstract-full').style.display = 'none'; document.getElementById('1804.04446v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 April, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 10 figures, 2 tables, accepted by EPJ C on 12th April 2018</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C (2018) 78: 319 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.00996">arXiv:1803.00996</a> <span> [<a href="https://arxiv.org/pdf/1803.00996">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Towards 2+1 photon tomography: Energy-based selection of two 511 keV photons and a prompt photon with the J-PET scanner </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Mase%C5%82ek%2C+R">R. Mase艂ek</a>, <a href="/search/physics?searchtype=author&query=Krzemien%2C+W">W. Krzemien</a>, <a href="/search/physics?searchtype=author&query=Klimaszewski%2C+K">K. Klimaszewski</a>, <a href="/search/physics?searchtype=author&query=Raczy%C5%84ski%2C+L">L. Raczy艅ski</a>, <a href="/search/physics?searchtype=author&query=Kowalski%2C+P">P. Kowalski</a>, <a href="/search/physics?searchtype=author&query=Shopa%2C+R">R. Shopa</a>, <a href="/search/physics?searchtype=author&query=Wi%C5%9Blicki%2C+W">W. Wi艣licki</a>, <a href="/search/physics?searchtype=author&query=Bia%C5%82as%2C+P">P. Bia艂as</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Czerwi%C5%84ski%2C+E">E. Czerwi艅ski</a>, <a href="/search/physics?searchtype=author&query=Dulski%2C+K">K. Dulski</a>, <a href="/search/physics?searchtype=author&query=Gajos%2C+A">A. Gajos</a>, <a href="/search/physics?searchtype=author&query=G%C5%82owacz%2C+B">B. G艂owacz</a>, <a href="/search/physics?searchtype=author&query=Gorgol%2C+M">M. Gorgol</a>, <a href="/search/physics?searchtype=author&query=Hiesmayr%2C+B">B. Hiesmayr</a>, <a href="/search/physics?searchtype=author&query=Jasi%C5%84ska%2C+B">B. Jasi艅ska</a>, <a href="/search/physics?searchtype=author&query=Kisielewska%2C+D">D. Kisielewska</a>, <a href="/search/physics?searchtype=author&query=Korcyl%2C+G">G. Korcyl</a>, <a href="/search/physics?searchtype=author&query=Kozik%2C+T">T. Kozik</a>, <a href="/search/physics?searchtype=author&query=Krawczyk%2C+N">N. Krawczyk</a>, <a href="/search/physics?searchtype=author&query=Kubicz%2C+E">E. Kubicz</a>, <a href="/search/physics?searchtype=author&query=Mohammed%2C+M">M. Mohammed</a>, <a href="/search/physics?searchtype=author&query=Pawlik-Nied%C5%BAwiecka%2C+M">M. Pawlik-Nied藕wiecka</a>, <a href="/search/physics?searchtype=author&query=Nied%C5%BAwiecki%2C+S">S. Nied藕wiecki</a>, <a href="/search/physics?searchtype=author&query=Pa%C5%82ka%2C+M">M. Pa艂ka</a> , et al. (9 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1803.00996v1-abstract-short" style="display: inline;"> The possibility to separate signals caused by 511 keV photons created in annihilation of electron-positron pairs and the so-called prompt photons from nuclei de- excitation is investigated. It could potentially be used to improve the quality of reconstructed images in the J-PET scanner in 2+1 photon tomography. Firstly, a research is conducted for several radioisotopes that decay via \b{eta}+ deca… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.00996v1-abstract-full').style.display = 'inline'; document.getElementById('1803.00996v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.00996v1-abstract-full" style="display: none;"> The possibility to separate signals caused by 511 keV photons created in annihilation of electron-positron pairs and the so-called prompt photons from nuclei de- excitation is investigated. It could potentially be used to improve the quality of reconstructed images in the J-PET scanner in 2+1 photon tomography. Firstly, a research is conducted for several radioisotopes that decay via \b{eta}+ decay followed by de-excitation of an excited nucleus. Efficiency, purity and false positive rate are calculated for each isotope as a function of energy deposited threshold, with a hypothesis that signals caused by 511 keV photons deposit smaller values of energy than 1 z 13the selected threshold, while prompt photons deposit larger energy than the threshold. Analysis of the results accompanied with physical properties of radioisotopes suggests using 44 Sc, which is the most promising candidate for medical applications. With the use of GATE and J-POS simulation software, in-phantom scattering was introduced and the best energy deposited threshold value was estimated to be approximately 375 keV. It corresponds to almost 100% efficiency for 511 keV signals, 75% purity for 511 keV photons, and approximately 70% efficiency and purity for prompt photons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.00996v1-abstract-full').style.display = 'none'; document.getElementById('1803.00996v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">13 pages, 11 figures, 2 tables, proceedings from "Young Scientists" conferences in Warsaw, Poland, 2017</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1801.07177">arXiv:1801.07177</a> <span> [<a href="https://arxiv.org/pdf/1801.07177">pdf</a>, <a href="https://arxiv.org/format/1801.07177">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/13/04/C04002">10.1088/1748-0221/13/04/C04002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> VOXES: a high precision X-ray spectrometer for diffused sources with HAPG crystals in the 2-20 keV range </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Scordo%2C+A">A. Scordo</a>, <a href="/search/physics?searchtype=author&query=Curceanu%2C+C">C. Curceanu</a>, <a href="/search/physics?searchtype=author&query=Miliucci%2C+M">M. Miliucci</a>, <a href="/search/physics?searchtype=author&query=Shi%2C+H">H. Shi</a>, <a href="/search/physics?searchtype=author&query=Sirghi%2C+F">F. Sirghi</a>, <a href="/search/physics?searchtype=author&query=Zmeskal%2C+J">J. Zmeskal</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1801.07177v2-abstract-short" style="display: inline;"> Bragg spectroscopy is one of the best established experimental methods for high energy resolution X-ray measurements and has been widely used in several fields, going from fundamental physics to quantum mechanics tests, synchrotron radiation and X-FEL applications, astronomy, medicine and industry. However, this technique is limited to the measurement of photons produced from well collimated or po… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.07177v2-abstract-full').style.display = 'inline'; document.getElementById('1801.07177v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1801.07177v2-abstract-full" style="display: none;"> Bragg spectroscopy is one of the best established experimental methods for high energy resolution X-ray measurements and has been widely used in several fields, going from fundamental physics to quantum mechanics tests, synchrotron radiation and X-FEL applications, astronomy, medicine and industry. However, this technique is limited to the measurement of photons produced from well collimated or point-like sources and becomes quite inefficient for photons coming from extended and diffused sources like those,for example, emitted in the exotic atoms radiative transitions. The VOXES project's goal is to realise a prototype of a high resolution and high precision X-ray spectrometer, using Highly Annealed Pyrolitic Graphite (HAPG) crystals in the Von Hamos configuration, working also for extended sources. The aim is to deliver a cost effective system having an energy resolution at the level of eV for X rays energies from about 2 keV up to tens of keV, able to perform sub-eV precision measurements with non point-like sources. In this paper, the working principle of VOXES, together with first results, are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.07177v2-abstract-full').style.display = 'none'; document.getElementById('1801.07177v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 19 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">arXiv admin note: text overlap with arXiv:1709.06503</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 13 (2018) no.04, C04002 </p> 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