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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <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/2411.18969">arXiv:2411.18969</a> <span> [<a href="https://arxiv.org/pdf/2411.18969">pdf</a>, <a href="https://arxiv.org/format/2411.18969">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"> Towards a new generation of solid total-energy detectors for neutron-capture time-of-flight experiments with intense neutron beams </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Balibrea-Correa%2C+J">J. Balibrea-Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Babiano-Suarez%2C+V">V. Babiano-Suarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Lerendegui-Marco%2C+J">J. Lerendegui-Marco</a>, <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ladarescu%2C+I">I. Ladarescu</a>, <a href="/search/nucl-ex?searchtype=author&query=Tarife%C3%B1o-Saldivia%2C+A">A. Tarife帽o-Saldivia</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Fuente-Rosales%2C+G">G. de la Fuente-Rosales</a>, <a href="/search/nucl-ex?searchtype=author&query=Gameiro%2C+B">B. Gameiro</a>, <a href="/search/nucl-ex?searchtype=author&query=Zaitseva%2C+N">N. Zaitseva</a>, <a href="/search/nucl-ex?searchtype=author&query=Alcayne%2C+V">V. Alcayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Cano-Ott%2C+D">D. Cano-Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonz%C3%A1lez-Romero%2C+E">E. Gonz谩lez-Romero</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez%2C+T">T. Mart铆nez</a>, <a href="/search/nucl-ex?searchtype=author&query=Mendoza%2C+E">E. Mendoza</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Rada%2C+A+P">A. P茅rez de Rada</a>, <a href="/search/nucl-ex?searchtype=author&query=del+Olmo%2C+J+P">J. Plaza del Olmo</a>, <a href="/search/nucl-ex?searchtype=author&query=S%C3%A1nchez-Caballero%2C+A">A. S谩nchez-Caballero</a>, <a href="/search/nucl-ex?searchtype=author&query=Casanovas%2C+A">A. Casanovas</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvi%C3%B1o%2C+F">F. Calvi帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Valenta%2C+S">S. Valenta</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Altieri%2C+S">S. Altieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrzejewski%2C+J">J. Andrzejewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacak%2C+M">M. Bacak</a> , et al. (112 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="2411.18969v1-abstract-short" style="display: inline;"> Challenging neutron-capture cross-section measurements of small cross sections and samples with a very limited number of atoms require high-flux time-of-flight facilities. In turn, such facilities need innovative detection setups that are fast, have low sensitivity to neutrons, can quickly recover from the so-called $纬$-flash, and offer the highest possible detection sensitivity. In this paper, we… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.18969v1-abstract-full').style.display = 'inline'; document.getElementById('2411.18969v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2411.18969v1-abstract-full" style="display: none;"> Challenging neutron-capture cross-section measurements of small cross sections and samples with a very limited number of atoms require high-flux time-of-flight facilities. In turn, such facilities need innovative detection setups that are fast, have low sensitivity to neutrons, can quickly recover from the so-called $纬$-flash, and offer the highest possible detection sensitivity. In this paper, we present several steps toward such advanced systems. Specifically, we describe the performance of a high-sensitivity experimental setup at CERN n\_TOF EAR2. It consists of nine sTED detector modules in a compact cylindrical configuration, two conventional used large-volume C$_{6}$D$_{6}$ detectors, and one LaCl$_{3}$(Ce) detector. The performance of these detection systems is compared using $^{93}$Nb($n$,$纬$) data. We also developed a detailed \textsc{Geant4} Monte Carlo model of the experimental EAR2 setup, which allows for a better understanding of the detector features, including their efficiency determination. This Monte Carlo model has been used for further optimization, thus leading to a new conceptual design of a $纬$ detector array, STAR, based on a deuterated-stilbene crystal array. Finally, the suitability of deuterated-stilbene crystals for the future STAR array is investigaged experimentally utilizing a small stilbene-d12 prototype. The results suggest a similar or superior performance of STAR with respect to other setups based on liquid-scintillators, and allow for additional features such as neutron-gamma discrimination and a higher level of customization capability. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2411.18969v1-abstract-full').style.display = 'none'; document.getElementById('2411.18969v1-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2403.11711">arXiv:2403.11711</a> <span> [<a href="https://arxiv.org/pdf/2403.11711">pdf</a>, <a href="https://arxiv.org/format/2403.11711">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> </div> </div> <p class="title is-5 mathjax"> New insights on fission of $^{235}$U induced by high energy neutrons from a new measurement at CERN n\_TOF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Manna%2C+A">Alice Manna</a>, <a href="/search/nucl-ex?searchtype=author&query=Pirovano%2C+E">Elisa Pirovano</a>, <a href="/search/nucl-ex?searchtype=author&query=Collaboration%2C+t+n">the n\_TOF Collaboration</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="2403.11711v3-abstract-short" style="display: inline;"> The $^{235}$U(n,f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n\_TOF facility, extending the upper limit of the only previous measurement in the literature by more than 200 MeV. Two independent detection systems were used simultaneously to extract the fission cross section. For neutron… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.11711v3-abstract-full').style.display = 'inline'; document.getElementById('2403.11711v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2403.11711v3-abstract-full" style="display: none;"> The $^{235}$U(n,f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n\_TOF facility, extending the upper limit of the only previous measurement in the literature by more than 200 MeV. Two independent detection systems were used simultaneously to extract the fission cross section. For neutron energies below 200 MeV, the present results agree within one standard deviation with the data available in literature and are well reproduced by the IAEA evaluation. Above 200 MeV, the comparison of model calculations to the present data indicates the need to introduce a transient time in the description of the neutron-induced fission process in order to allow the simultaneous description of (n,f) and (p,f) reactions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2403.11711v3-abstract-full').style.display = 'none'; document.getElementById('2403.11711v3-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> 14 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.01365">arXiv:2311.01365</a> <span> [<a href="https://arxiv.org/pdf/2311.01365">pdf</a>, <a href="https://arxiv.org/format/2311.01365">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"> Pushing the high count rate limits of scintillation detectors for challenging neutron-capture experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+J+B">J. Balibrea Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Lerendegui-Marco%2C+J">J. Lerendegui-Marco</a>, <a href="/search/nucl-ex?searchtype=author&query=Babiano-Suarez%2C+V">V. Babiano-Suarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ladarescu%2C+I">I. Ladarescu</a>, <a href="/search/nucl-ex?searchtype=author&query=Tarife%C3%B1o-Saldivia%2C+A">A. Tarife帽o-Saldivia</a>, <a href="/search/nucl-ex?searchtype=author&query=Alcayne%2C+V">V. Alcayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Cano-Ott%2C+D">D. Cano-Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonz%C3%A1lez-Romero%2C+E">E. Gonz谩lez-Romero</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez%2C+T">T. Mart铆nez</a>, <a href="/search/nucl-ex?searchtype=author&query=Mendoza%2C+E">E. Mendoza</a>, <a href="/search/nucl-ex?searchtype=author&query=de+Rada%2C+A+P">A. P茅rez de Rada</a>, <a href="/search/nucl-ex?searchtype=author&query=del+Olmo%2C+J+P">J. Plaza del Olmo</a>, <a href="/search/nucl-ex?searchtype=author&query=S%C3%A1nchez-Caballero%2C+A">A. S谩nchez-Caballero</a>, <a href="/search/nucl-ex?searchtype=author&query=Casanovas%2C+A">A. Casanovas</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvi%C3%B1o%2C+F">F. Calvi帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Valenta%2C+S">S. Valenta</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Altieri%2C+S">S. Altieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrzejewski%2C+J">J. Andrzejewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacak%2C+M">M. Bacak</a>, <a href="/search/nucl-ex?searchtype=author&query=Beltrami%2C+C">C. Beltrami</a>, <a href="/search/nucl-ex?searchtype=author&query=Bennett%2C+S">S. Bennett</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernardes%2C+A+P">A. P. Bernardes</a> , et al. (109 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="2311.01365v1-abstract-short" style="display: inline;"> One of the critical aspects for the accurate determination of neutron capture cross sections when combining time-of-flight and total energy detector techniques is the characterization and control of systematic uncertainties associated to the measuring devices. In this work we explore the most conspicuous effects associated to harsh count rate conditions: dead-time and pile-up effects. Both effects… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01365v1-abstract-full').style.display = 'inline'; document.getElementById('2311.01365v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.01365v1-abstract-full" style="display: none;"> One of the critical aspects for the accurate determination of neutron capture cross sections when combining time-of-flight and total energy detector techniques is the characterization and control of systematic uncertainties associated to the measuring devices. In this work we explore the most conspicuous effects associated to harsh count rate conditions: dead-time and pile-up effects. Both effects, when not properly treated, can lead to large systematic uncertainties and bias in the determination of neutron cross sections. In the majority of neutron capture measurements carried out at the CERN n\_TOF facility, the detectors of choice are the C$_{6}$D$_{6}$ liquid-based either in form of large-volume cells or recently commissioned sTED detector array, consisting of much smaller-volume modules. To account for the aforementioned effects, we introduce a Monte Carlo model for these detectors mimicking harsh count rate conditions similar to those happening at the CERN n\_TOF 20~m fligth path vertical measuring station. The model parameters are extracted by comparison with the experimental data taken at the same facility during 2022 experimental campaign. We propose a novel methodology to consider both, dead-time and pile-up effects simultaneously for these fast detectors and check the applicability to experimental data from $^{197}$Au($n$,$纬$), including the saturated 4.9~eV resonance which is an important component of normalization for neutron cross section measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.01365v1-abstract-full').style.display = 'none'; document.getElementById('2311.01365v1-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, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.11199">arXiv:2301.11199</a> <span> [<a href="https://arxiv.org/pdf/2301.11199">pdf</a>, <a href="https://arxiv.org/format/2301.11199">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> </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/10.1051/epjconf/202327906004">10.1051/epjconf/202327906004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First measurement of the $^{94}$Nb($n$,$纬$) cross section at the CERN n\_TOF facility </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Balibrea-Correa%2C+J">J. Balibrea-Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Babiano-Suarez%2C+V">V. Babiano-Suarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Lerendegui-Marco%2C+J">J. Lerendegui-Marco</a>, <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ladarescu%2C+I">I. Ladarescu</a>, <a href="/search/nucl-ex?searchtype=author&query=Tarife%C3%B1o-Saldivia%2C+A">A. Tarife帽o-Saldivia</a>, <a href="/search/nucl-ex?searchtype=author&query=Alcayne%2C+V">V. Alcayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Cano-Ott%2C+D">D. Cano-Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonz%C3%A1lez-Romero%2C+E">E. Gonz谩lez-Romero</a>, <a href="/search/nucl-ex?searchtype=author&query=Mart%C3%ADnez%2C+T">T. Mart铆nez</a>, <a href="/search/nucl-ex?searchtype=author&query=Mendoza%2C+E">E. Mendoza</a>, <a href="/search/nucl-ex?searchtype=author&query=Plaza%2C+J">J. Plaza</a>, <a href="/search/nucl-ex?searchtype=author&query=S%C3%A1nchez-Caballero%2C+A">A. S谩nchez-Caballero</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvi%C3%B1o%2C+F">F. Calvi帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Casanovas%2C+A">A. Casanovas</a>, <a href="/search/nucl-ex?searchtype=author&query=Guerrero%2C+C">C. Guerrero</a>, <a href="/search/nucl-ex?searchtype=author&query=Heinitz%2C+S">S. Heinitz</a>, <a href="/search/nucl-ex?searchtype=author&query=K%C3%B6ster%2C+U">U. K枚ster</a>, <a href="/search/nucl-ex?searchtype=author&query=Maugeri%2C+E+A">E. A. Maugeri</a>, <a href="/search/nucl-ex?searchtype=author&query=Dressler%2C+R">R. Dressler</a>, <a href="/search/nucl-ex?searchtype=author&query=Schumann%2C+D">D. Schumann</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%B6nch%2C+I">I. M枚nch</a>, <a href="/search/nucl-ex?searchtype=author&query=Cristallo%2C+S">S. Cristallo</a>, <a href="/search/nucl-ex?searchtype=author&query=Lederer-Woods%2C+C">C. Lederer-Woods</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a> , et al. (112 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="2301.11199v2-abstract-short" style="display: inline;"> One of the crucial ingredients for the improvement of stellar models is the accurate knowledge of neutron capture cross-sections for the different isotopes involved in the $s$-,$r$- and $i$- processes. These measurements can shed light on existing discrepancies between observed and predicted isotopic abundances and help to constrain the physical conditions where these reactions take place along di… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.11199v2-abstract-full').style.display = 'inline'; document.getElementById('2301.11199v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.11199v2-abstract-full" style="display: none;"> One of the crucial ingredients for the improvement of stellar models is the accurate knowledge of neutron capture cross-sections for the different isotopes involved in the $s$-,$r$- and $i$- processes. These measurements can shed light on existing discrepancies between observed and predicted isotopic abundances and help to constrain the physical conditions where these reactions take place along different stages of stellar evolution.In the particular case of the radioactive $^{94}$Nb, the $^{94}$Nb($n$,$纬$) cross-section could play a role in the determination of the $s$-process production of $^{94}$Mo in AGB stars, which presently cannot be reproduced by state-of-the-art stellar models. There are no previous $^{94}$Nb($n$,$纬$) experimental data for the resolved and unresolved resonance regions mainly due to the difficulties in producing high-quality samples and also due to limitations in conventional detection systems commonly used in time-of-flight experiments.Motivated by this situation, a first measurement of the $^{94}$Nb($n$,$纬$) reaction was carried out at CERN n\_TOF, thereby exploiting the high luminosity of the EAR2 area in combination with a new detection system of small-volume C6D6-detectors and a high quality $^{94}$Nb-sample. The latter was based on hyper-pure $^{93}$Nb material activated at the high-flux reactor of ILL-Grenoble. An innovative ring-configuration detection system in close geometry around the capture sample allowed us to significantly enhance the signal-to-background ratio. This set-up was supplemented with two conventional C$_{6}$D$_{6}$ detectors and a high-resolution LaCl$_{3}$(Ce)-detector, which will be employed for addressing reliably systematic effects and uncertainties.At the current status of the data analysis, 18 resonance in $^{94}$Nb+$n$ have been observed for the first time in the neutron energy range from thermal up to 10 keV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.11199v2-abstract-full').style.display = 'none'; document.getElementById('2301.11199v2-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> 20 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">NPA-X conference proceeding</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.13323">arXiv:2211.13323</a> <span> [<a href="https://arxiv.org/pdf/2211.13323">pdf</a>, <a href="https://arxiv.org/format/2211.13323">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"> A detector system for 'absolute' measurements of fission cross sections at n_TOF in the energy range below 200 MeV </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Pirovano%2C+E">E. Pirovano</a>, <a href="/search/nucl-ex?searchtype=author&query=Manna%2C+A">A. Manna</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Colonna%2C+N">N. Colonna</a>, <a href="/search/nucl-ex?searchtype=author&query=Camprini%2C+P+C">P. Console Camprini</a>, <a href="/search/nucl-ex?searchtype=author&query=Cosentino%2C+L">L. Cosentino</a>, <a href="/search/nucl-ex?searchtype=author&query=Dietz%2C+M">M. Dietz</a>, <a href="/search/nucl-ex?searchtype=author&query=Ducasse%2C+Q">Q. Ducasse</a>, <a href="/search/nucl-ex?searchtype=author&query=Finocchiaro%2C+P">P. Finocchiaro</a>, <a href="/search/nucl-ex?searchtype=author&query=Massimi%2C+C">C. Massimi</a>, <a href="/search/nucl-ex?searchtype=author&query=Mengoni%2C+A">A. Mengoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Nolte%2C+R">R. Nolte</a>, <a href="/search/nucl-ex?searchtype=author&query=Radeck%2C+D">D. Radeck</a>, <a href="/search/nucl-ex?searchtype=author&query=Tassan-Got%2C+L">L. Tassan-Got</a>, <a href="/search/nucl-ex?searchtype=author&query=Terranova%2C+N">N. Terranova</a>, <a href="/search/nucl-ex?searchtype=author&query=Vannini%2C+G">G. Vannini</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="2211.13323v2-abstract-short" style="display: inline;"> A new measurement of the $^{235}$U(n,f) cross section was performed at the neutron time-of-flight facility n_TOF at CERN. The experiment focused on neutron energies from 20 MeV to several hundred MeV, and was normalized to neutron scattering on hydrogen. This is a measurement first of its kind at this facility, in an energy range that was until now not often explored, so the detector development p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.13323v2-abstract-full').style.display = 'inline'; document.getElementById('2211.13323v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.13323v2-abstract-full" style="display: none;"> A new measurement of the $^{235}$U(n,f) cross section was performed at the neutron time-of-flight facility n_TOF at CERN. The experiment focused on neutron energies from 20 MeV to several hundred MeV, and was normalized to neutron scattering on hydrogen. This is a measurement first of its kind at this facility, in an energy range that was until now not often explored, so the detector development phase was crucial for its success. Two detectors are presented, a parallel plate fission chamber (PPFC) and a recoil proton telescope (RPT), both dedicated to perform measurements in the incident neutron energy range from 30 MeV to 200 MeV. The experiment was designed to minimize statistical uncertainties in the allocated run time. Several efforts were made to ensure that the systematic effects were understood and under control. The results show that the detectors are suited for measurements at n_TOF above 30 MeV, and indicate the path for possible future lines of development. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.13323v2-abstract-full').style.display = 'none'; document.getElementById('2211.13323v2-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 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 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">Added acknowledgement to Euratom funding</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.12427">arXiv:2211.12427</a> <span> [<a href="https://arxiv.org/pdf/2211.12427">pdf</a>, <a href="https://arxiv.org/format/2211.12427">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/10.1088/1748-0221/18/04/P04024">10.1088/1748-0221/18/04/P04024 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Recoil Proton Telescopes and Parallel Plate Avalanche Counters for the $^{235}$U(n,f) cross section measurement relative to H(n,n)H between 10 and 450 MeV neutron energy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Manna%2C+A">A. Manna</a>, <a href="/search/nucl-ex?searchtype=author&query=Pirovano%2C+E">E. Pirovano</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbagallo%2C+M">M. Barbagallo</a>, <a href="/search/nucl-ex?searchtype=author&query=Castelluccio%2C+D+M">D. M. Castelluccio</a>, <a href="/search/nucl-ex?searchtype=author&query=Colonna%2C+N">N. Colonna</a>, <a href="/search/nucl-ex?searchtype=author&query=Camprini%2C+P+C">P. Console Camprini</a>, <a href="/search/nucl-ex?searchtype=author&query=Cosentino%2C+L">L. Cosentino</a>, <a href="/search/nucl-ex?searchtype=author&query=Dietz%2C+M">M. Dietz</a>, <a href="/search/nucl-ex?searchtype=author&query=Ducasse%2C+Q">Q. Ducasse</a>, <a href="/search/nucl-ex?searchtype=author&query=Finocchiaro%2C+P">P. Finocchiaro</a>, <a href="/search/nucl-ex?searchtype=author&query=Naour%2C+C+L">C. Le Naour</a>, <a href="/search/nucl-ex?searchtype=author&query=Meo%2C+S+L">S. Lo Meo</a>, <a href="/search/nucl-ex?searchtype=author&query=Mastromarco%2C+M">M. Mastromarco</a>, <a href="/search/nucl-ex?searchtype=author&query=Massimi%2C+C">C. Massimi</a>, <a href="/search/nucl-ex?searchtype=author&query=Mengoni%2C+A">A. Mengoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Milazzo%2C+P+M">P. M. Milazzo</a>, <a href="/search/nucl-ex?searchtype=author&query=Mingrone%2C+F">F. Mingrone</a>, <a href="/search/nucl-ex?searchtype=author&query=Nolte%2C+R">R. Nolte</a>, <a href="/search/nucl-ex?searchtype=author&query=Piscopo%2C+M">M. Piscopo</a>, <a href="/search/nucl-ex?searchtype=author&query=Radeck%2C+D">D. Radeck</a>, <a href="/search/nucl-ex?searchtype=author&query=Spelta%2C+M">M. Spelta</a>, <a href="/search/nucl-ex?searchtype=author&query=Tassan-Got%2C+L">L. Tassan-Got</a>, <a href="/search/nucl-ex?searchtype=author&query=Terranova%2C+N">N. Terranova</a> , et al. (1 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="2211.12427v2-abstract-short" style="display: inline;"> With the aim of measuring the $^{235}$U(n,f) cross section at the n\_TOF facility at CERN over a wide neutron energy range, a detection system consisting of two fission detectors and three detectors for neutron flux determination was realized. The neutron flux detectors are Recoil Proton Telescopes (RPT), based on scintillators and solid state detectors, conceived to detect recoil protons from the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.12427v2-abstract-full').style.display = 'inline'; document.getElementById('2211.12427v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.12427v2-abstract-full" style="display: none;"> With the aim of measuring the $^{235}$U(n,f) cross section at the n\_TOF facility at CERN over a wide neutron energy range, a detection system consisting of two fission detectors and three detectors for neutron flux determination was realized. The neutron flux detectors are Recoil Proton Telescopes (RPT), based on scintillators and solid state detectors, conceived to detect recoil protons from the neutron-proton elastic scattering reaction. This system, along with a fission chamber and an array of parallel plate avalanche counters for fission event detection, was installed for the measurement at the n\_TOF facility in 2018, at CERN. An overview of the performances of two RPTs - especially developed for this measurement - and of the parallel plate avalanche counters are described in this article. In particular, the characterization in terms of detection efficiency by Monte Carlo simulations and response to neutron beam, the study of the background, dead time correction and characterization of the samples, are reported. The results of the present investigation show that the performances of these detectors are suitable for accurate measurements of fission reaction cross sections in the range from 10 to 450~MeV. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.12427v2-abstract-full').style.display = 'none'; document.getElementById('2211.12427v2-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, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 November, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.04443">arXiv:2209.04443</a> <span> [<a href="https://arxiv.org/pdf/2209.04443">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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"> The CERN n TOF NEAR station for astrophysics- and application-related neutron activation measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Patronis%2C+N">N. Patronis</a>, <a href="/search/nucl-ex?searchtype=author&query=Mengoni%2C+A">A. Mengoni</a>, <a href="/search/nucl-ex?searchtype=author&query=Colonna%2C+N">N. Colonna</a>, <a href="/search/nucl-ex?searchtype=author&query=Cecchetto%2C+M">M. Cecchetto</a>, <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Lerendegui-Marco%2C+J">J. Lerendegui-Marco</a>, <a href="/search/nucl-ex?searchtype=author&query=Gervino%2C+G">G. Gervino</a>, <a href="/search/nucl-ex?searchtype=author&query=Stamati%2C+M+E">M. E. Stamati</a>, <a href="/search/nucl-ex?searchtype=author&query=Goula%2C+S">S. Goula</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernardes%2C+A+P">A. P. Bernardes</a>, <a href="/search/nucl-ex?searchtype=author&query=Mastromarco%2C+M">M. Mastromarco</a>, <a href="/search/nucl-ex?searchtype=author&query=Manna%2C+A">A. Manna</a>, <a href="/search/nucl-ex?searchtype=author&query=Vlastou%2C+R">R. Vlastou</a>, <a href="/search/nucl-ex?searchtype=author&query=Massimi%2C+C">C. Massimi</a>, <a href="/search/nucl-ex?searchtype=author&query=Calviani%2C+M">M. Calviani</a>, <a href="/search/nucl-ex?searchtype=author&query=Alcayne%2C+V">V. Alcayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Altieri%2C+S">S. Altieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrzejewski%2C+J">J. Andrzejewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Babiano-Suarez%2C+V">V. Babiano-Suarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacak%2C+M">M. Bacak</a>, <a href="/search/nucl-ex?searchtype=author&query=Balibrea%2C+J">J. Balibrea</a>, <a href="/search/nucl-ex?searchtype=author&query=Beltrami%2C+C">C. Beltrami</a>, <a href="/search/nucl-ex?searchtype=author&query=Bennett%2C+S">S. Bennett</a> , et al. (108 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="2209.04443v1-abstract-short" style="display: inline;"> A new experimental area, the NEAR station, has recently been built at the CERN n TOF facility, at a short distance from the spallation target (1.5 m). The new area, characterized by a neutron beam of very high flux, has been designed with the purpose of performing activation measurements of interest for astrophysics and various applications. The beam is transported from the spallation target to th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.04443v1-abstract-full').style.display = 'inline'; document.getElementById('2209.04443v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.04443v1-abstract-full" style="display: none;"> A new experimental area, the NEAR station, has recently been built at the CERN n TOF facility, at a short distance from the spallation target (1.5 m). The new area, characterized by a neutron beam of very high flux, has been designed with the purpose of performing activation measurements of interest for astrophysics and various applications. The beam is transported from the spallation target to the NEAR station through a hole in the shielding wall of the target, inside which a collimator is inserted. The new area is complemented with a 纬-ray spectroscopy laboratory, the GEAR station, equipped with a high efficiency HPGe detector, for the measurement of the activity resulting from irradiation of a sample in the NEAR station. The use of a moderator/filter assembly is envisaged, in order to produce a neutron beam of Maxwellian shape at different thermal energies, necessary for the measurement of Maxwellian Averaged Cross Sections of astrophysical interest. A new fast-cycling activation technique is also being investigated, for measurements of reactions leading to isotopes of very short half life. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.04443v1-abstract-full').style.display = 'none'; document.getElementById('2209.04443v1-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> 5 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2208.02163">arXiv:2208.02163</a> <span> [<a href="https://arxiv.org/pdf/2208.02163">pdf</a>, <a href="https://arxiv.org/format/2208.02163">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> </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/s10050-022-00876-7">10.1140/epja/s10050-022-00876-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Babiano-Suarez%2C+V">V. Babiano-Suarez</a>, <a href="/search/nucl-ex?searchtype=author&query=Balibrea-Correa%2C+J">J. Balibrea-Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Caballero%2C+L">L. Caballero</a>, <a href="/search/nucl-ex?searchtype=author&query=Ladarescu%2C+I">I. Ladarescu</a>, <a href="/search/nucl-ex?searchtype=author&query=Lerendegui-Marco%2C+J">J. Lerendegui-Marco</a>, <a href="/search/nucl-ex?searchtype=author&query=Tain%2C+J+L">J. L. Tain</a>, <a href="/search/nucl-ex?searchtype=author&query=Tarife%C3%B1o-Saldivia%2C+A">A. Tarife帽o-Saldivia</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Alcayne%2C+V">V. Alcayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Altieri%2C+S">S. Altieri</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrzejewski%2C+J">J. Andrzejewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacak%2C+M">M. Bacak</a>, <a href="/search/nucl-ex?searchtype=author&query=Beltrami%2C+C">C. Beltrami</a>, <a href="/search/nucl-ex?searchtype=author&query=Bennett%2C+S">S. Bennett</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernardes%2C+A+P">A. P. Bernardes</a>, <a href="/search/nucl-ex?searchtype=author&query=Berthoumieux%2C+E">E. Berthoumieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Boromiza%2C+M">M. Boromiza</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Caama%C3%B1o%2C+M">M. Caama帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvi%C3%B1o%2C+F">F. Calvi帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Calviani%2C+M">M. Calviani</a>, <a href="/search/nucl-ex?searchtype=author&query=Cano-Ott%2C+D">D. Cano-Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Casanovas%2C+A">A. Casanovas</a> , et al. (114 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="2208.02163v1-abstract-short" style="display: inline;"> This article presents a few selected developments and future ideas related to the measurement of $(n,纬)$ data of astrophysical interest at CERN n_TOF. The MC-aided analysis methodology for the use of low-efficiency radiation detectors in time-of-flight neutron-capture measurements is discussed, with particular emphasis on the systematic accuracy. Several recent instrumental advances are also prese… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.02163v1-abstract-full').style.display = 'inline'; document.getElementById('2208.02163v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2208.02163v1-abstract-full" style="display: none;"> This article presents a few selected developments and future ideas related to the measurement of $(n,纬)$ data of astrophysical interest at CERN n_TOF. The MC-aided analysis methodology for the use of low-efficiency radiation detectors in time-of-flight neutron-capture measurements is discussed, with particular emphasis on the systematic accuracy. Several recent instrumental advances are also presented, such as the development of total-energy detectors with $纬$-ray imaging capability for background suppression, and the development of an array of small-volume organic scintillators aimed at exploiting the high instantaneous neutron-flux of EAR2. Finally, astrophysics prospects related to the intermediate $i$ neutron-capture process of nucleosynthesis are discussed in the context of the new NEAR activation area. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2208.02163v1-abstract-full').style.display = 'none'; document.getElementById('2208.02163v1-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, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">preprint submitted to the European Physical Journal A, 11 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> The European Physical Journal A 59, 8 (2023) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.03754">arXiv:2202.03754</a> <span> [<a href="https://arxiv.org/pdf/2202.03754">pdf</a>, <a href="https://arxiv.org/format/2202.03754">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> <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/10.1140/epjc/s10052-022-10768-1">10.1140/epjc/s10052-022-10768-1 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct measurement of the ionization quenching factor of nuclear recoils in germanium in the keV energy range </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bonhomme%2C+A">A. Bonhomme</a>, <a href="/search/nucl-ex?searchtype=author&query=Bonet%2C+H">H. Bonet</a>, <a href="/search/nucl-ex?searchtype=author&query=Buck%2C+C">C. Buck</a>, <a href="/search/nucl-ex?searchtype=author&query=Hakenm%C3%BCller%2C+J">J. Hakenm眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Heusser%2C+G">G. Heusser</a>, <a href="/search/nucl-ex?searchtype=author&query=Hugle%2C+T">T. Hugle</a>, <a href="/search/nucl-ex?searchtype=author&query=Lindner%2C+M">M. Lindner</a>, <a href="/search/nucl-ex?searchtype=author&query=Maneschg%2C+W">W. Maneschg</a>, <a href="/search/nucl-ex?searchtype=author&query=Nolte%2C+R">R. Nolte</a>, <a href="/search/nucl-ex?searchtype=author&query=Rink%2C+T">T. Rink</a>, <a href="/search/nucl-ex?searchtype=author&query=Pirovano%2C+E">E. Pirovano</a>, <a href="/search/nucl-ex?searchtype=author&query=Strecker%2C+H">H. Strecker</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="2202.03754v2-abstract-short" style="display: inline;"> This article reports the measurement of the ionization quenching factor in germanium for nuclear recoil energies between 0.4 and 6.3 keV$_{nr}$. Precise knowledge of this factor in this energy range is relevant for coherent elastic neutrino-nucleus scattering and low mass dark matter searches with germanium-based detectors. Nuclear recoils were produced in a thin high-purity germanium target with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.03754v2-abstract-full').style.display = 'inline'; document.getElementById('2202.03754v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.03754v2-abstract-full" style="display: none;"> This article reports the measurement of the ionization quenching factor in germanium for nuclear recoil energies between 0.4 and 6.3 keV$_{nr}$. Precise knowledge of this factor in this energy range is relevant for coherent elastic neutrino-nucleus scattering and low mass dark matter searches with germanium-based detectors. Nuclear recoils were produced in a thin high-purity germanium target with a very low energy threshold via irradiation with monoenergetic neutron beams. The energy dependence of the ionization quenching factor was directly measured via kinematically constrained coincidences with surrounding liquid scintillator based neutron detectors. The systematic uncertainties of the measurements are discussed in detail. With measured quenching factors between 0.16 and 0.23 in the [0.4, 6.3] keV$_{nr}$ energy range, the data are compatible with the Lindhard theory with a parameter $k$ of 0.162 $\pm$ 0.004 (stat+sys). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.03754v2-abstract-full').style.display = 'none'; document.getElementById('2202.03754v2-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 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 February, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur. Phys. J. C 82, 815 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2012.10374">arXiv:2012.10374</a> <span> [<a href="https://arxiv.org/pdf/2012.10374">pdf</a>, <a href="https://arxiv.org/format/2012.10374">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="Instrumentation and Methods for Astrophysics">astro-ph.IM</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/10.1140/epja/s10050-021-00507-7">10.1140/epja/s10050-021-00507-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Imaging neutron capture cross sections: i-TED proof-of-concept and future prospects based on Machine-Learning techniques </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Babiano-Su%C3%A1rez%2C+V">V. Babiano-Su谩rez</a>, <a href="/search/nucl-ex?searchtype=author&query=Lerendegui-Marco%2C+J">J. Lerendegui-Marco</a>, <a href="/search/nucl-ex?searchtype=author&query=Balibrea-Correa%2C+J">J. Balibrea-Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Caballero%2C+L">L. Caballero</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvo%2C+D">D. Calvo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ladarescu%2C+I">I. Ladarescu</a>, <a href="/search/nucl-ex?searchtype=author&query=Domingo-Pardo%2C+C">C. Domingo-Pardo</a>, <a href="/search/nucl-ex?searchtype=author&query=Calvi%C3%B1o%2C+F">F. Calvi帽o</a>, <a href="/search/nucl-ex?searchtype=author&query=Casanovas%2C+A">A. Casanovas</a>, <a href="/search/nucl-ex?searchtype=author&query=Tarife%C3%B1o-Saldivia%2C+A">A. Tarife帽o-Saldivia</a>, <a href="/search/nucl-ex?searchtype=author&query=Alcayne%2C+V">V. Alcayne</a>, <a href="/search/nucl-ex?searchtype=author&query=Guerrero%2C+C">C. Guerrero</a>, <a href="/search/nucl-ex?searchtype=author&query=Mill%C3%A1n-Callado%2C+M+A">M. A. Mill谩n-Callado</a>, <a href="/search/nucl-ex?searchtype=author&query=Gonz%C3%A1lez%2C+M+T+R">M. T. Rodr铆guez Gonz谩lez</a>, <a href="/search/nucl-ex?searchtype=author&query=Barbagallo%2C+M">M. Barbagallo</a>, <a href="/search/nucl-ex?searchtype=author&query=Aberle%2C+O">O. Aberle</a>, <a href="/search/nucl-ex?searchtype=author&query=Amaducci%2C+S">S. Amaducci</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrzejewski%2C+J">J. Andrzejewski</a>, <a href="/search/nucl-ex?searchtype=author&query=Audouin%2C+L">L. Audouin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bacak%2C+M">M. Bacak</a>, <a href="/search/nucl-ex?searchtype=author&query=Bennett%2C+S">S. Bennett</a>, <a href="/search/nucl-ex?searchtype=author&query=Berthoumieux%2C+E">E. Berthoumieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Billowes%2C+J">J. Billowes</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Brown%2C+A">A. Brown</a> , et al. (110 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="2012.10374v1-abstract-short" style="display: inline;"> i-TED is an innovative detection system which exploits Compton imaging techniques to achieve a superior signal-to-background ratio in ($n,纬$) cross-section measurements using time-of-flight technique. This work presents the first experimental validation of the i-TED apparatus for high-resolution time-of-flight experiments and demonstrates for the first time the concept proposed for background reje… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.10374v1-abstract-full').style.display = 'inline'; document.getElementById('2012.10374v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2012.10374v1-abstract-full" style="display: none;"> i-TED is an innovative detection system which exploits Compton imaging techniques to achieve a superior signal-to-background ratio in ($n,纬$) cross-section measurements using time-of-flight technique. This work presents the first experimental validation of the i-TED apparatus for high-resolution time-of-flight experiments and demonstrates for the first time the concept proposed for background rejection. To this aim both $^{197}$Au($n,纬$) and $^{56}$Fe($n, 纬$) reactions were measured at CERN n\_TOF using an i-TED demonstrator based on only three position-sensitive detectors. Two \cds detectors were also used to benchmark the performance of i-TED. The i-TED prototype built for this study shows a factor of $\sim$3 higher detection sensitivity than state-of-the-art \cds detectors in the $\sim$10~keV neutron energy range of astrophysical interest. This paper explores also the perspectives of further enhancement in performance attainable with the final i-TED array consisting of twenty position-sensitive detectors and new analysis methodologies based on Machine-Learning techniques. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2012.10374v1-abstract-full').style.display = 'none'; document.getElementById('2012.10374v1-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 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">16 pages, 16 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/1810.06555">arXiv:1810.06555</a> <span> [<a href="https://arxiv.org/pdf/1810.06555">pdf</a>, <a href="https://arxiv.org/ps/1810.06555">ps</a>, <a href="https://arxiv.org/format/1810.06555">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.2019.04.015">10.1016/j.nima.2019.04.015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Calibration of the compact neutron spectrometer at PTB </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Osipenko%2C+M">M. Osipenko</a>, <a href="/search/nucl-ex?searchtype=author&query=Ceriale%2C+V">V. Ceriale</a>, <a href="/search/nucl-ex?searchtype=author&query=Gariano%2C+G">G. Gariano</a>, <a href="/search/nucl-ex?searchtype=author&query=Girolami%2C+M">M. Girolami</a>, <a href="/search/nucl-ex?searchtype=author&query=Cerchi%2C+S">S. Cerchi</a>, <a href="/search/nucl-ex?searchtype=author&query=Nolte%2C+R">R. Nolte</a>, <a href="/search/nucl-ex?searchtype=author&query=Pirovano%2C+E">E. Pirovano</a>, <a href="/search/nucl-ex?searchtype=author&query=Ripani%2C+M">M. Ripani</a>, <a href="/search/nucl-ex?searchtype=author&query=Trucchi%2C+D+M">D. M. Trucchi</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="1810.06555v1-abstract-short" style="display: inline;"> In the present article we describe the calibration measurements of the compact neutron spectrometer at certified PTB neutron source. The spectrometer is based on two diamond detectors enclosing the Li-6 neutron converter. The incident neutron energy is measured through the sum of energies of the two conversion reaction products: t and alpha. The prototype used in this work was based on two 4x4 mm2… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.06555v1-abstract-full').style.display = 'inline'; document.getElementById('1810.06555v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1810.06555v1-abstract-full" style="display: none;"> In the present article we describe the calibration measurements of the compact neutron spectrometer at certified PTB neutron source. The spectrometer is based on two diamond detectors enclosing the Li-6 neutron converter. The incident neutron energy is measured through the sum of energies of the two conversion reaction products: t and alpha. The prototype used in this work was based on two 4x4 mm2, 100 um thick single crystal CVD commercial diamond plates. The measurements were performed in the fission spectrum domain at five different neutron energies varying from 0.3 up to 2 MeV. The obtained data showed a very good neutron energy reconstruction, i.e. in agreement with its reference values within statistical uncertainties or with deviation below 11 keV in absolute scale. The energy resolution of the spectrometer was found to be about 100 keV (RMS) with a small (about 9 keV/MeV) rising trend towards higher energies. The measured detection efficiency was found to be compatible with expectations based on analytical calculations and on Geant4 simulations within 3% statistical and 4% systematic precision. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1810.06555v1-abstract-full').style.display = 'none'; document.getElementById('1810.06555v1-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, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">20 pages, 14 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instrum. Methods A 931 (2019) 135-141 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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