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<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=Benussi%2C+L&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Benussi%2C+L&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Benussi%2C+L&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/2406.05713">arXiv:2406.05713</a> <span> [<a href="https://arxiv.org/pdf/2406.05713">pdf</a>, <a href="https://arxiv.org/format/2406.05713">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/s10052-024-13471-5">10.1140/epjc/s10052-024-13471-5 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Enhancing the light yield of He:CF$_4$ based gaseous detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Antonietti%2C+R">R. Antonietti</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Campagnola%2C+R">R. Campagnola</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+D+S">D. S. Cardoso</a>, <a href="/search/physics?searchtype=author&query=de+Carvalho%2C+L+G+M">L. G. M. de Carvalho</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. Abritta Costa</a>, <a href="/search/physics?searchtype=author&query=Croce%2C+A">A. Croce</a>, <a href="/search/physics?searchtype=author&query=Dan%C3%A9%2C+E">E. Dan茅</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Di+Giambattista%2C+F">F. Di Giambattista</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Astolfo%2C+M">M. D'Astolfo</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Fiorina%2C+D">D. Fiorina</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Islam%2C+Z">Z. Islam</a>, <a href="/search/physics?searchtype=author&query=J%C3%B9nior%2C+H+P+L">H. P. L. J霉nior</a>, <a href="/search/physics?searchtype=author&query=Kemp%2C+E">E. Kemp</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a> , et al. (29 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="2406.05713v2-abstract-short" style="display: inline;"> The CYGNO experiment aims to build a large ($\mathcal{O}(10)$ m$^3$) directional detector for rare event searches, such as nuclear recoils (NRs) induced by dark matter (DM), such as weakly interactive massive particles (WIMPs). The detector concept comprises a time projection chamber (TPC), filled with a He:CF$_4$ 60/40 scintillating gas mixture at room temperature and atmospheric pressure, equipp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.05713v2-abstract-full').style.display = 'inline'; document.getElementById('2406.05713v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2406.05713v2-abstract-full" style="display: none;"> The CYGNO experiment aims to build a large ($\mathcal{O}(10)$ m$^3$) directional detector for rare event searches, such as nuclear recoils (NRs) induced by dark matter (DM), such as weakly interactive massive particles (WIMPs). The detector concept comprises a time projection chamber (TPC), filled with a He:CF$_4$ 60/40 scintillating gas mixture at room temperature and atmospheric pressure, equipped with an amplification stage made of a stack of three gas electron multipliers (GEMs) which are coupled to an optical readout. The latter consists in scientific CMOS (sCMOS) cameras and photomultipliers tubes (PMTs). The maximisation of the light yield of the amplification stage plays a major role in the determination of the energy threshold of the experiment. In this paper, we simulate the effect of the addition of a strong electric field below the last GEM plane on the GEM field structure and we experimentally test it by means of a 10$\times$10 cm$^2$ readout area prototype. The experimental measurements analyse stacks of different GEMs and helium concentrations in the gas mixture combined with this extra electric field, studying their performances in terms of light yield, energy resolution and intrinsic diffusion. It is found that the use of this additional electric field permits large light yield increases without degrading intrinsic characteristics of the amplification stage with respect to the regular use of GEMs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2406.05713v2-abstract-full').style.display = 'none'; document.getElementById('2406.05713v2-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 November, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 June, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">Correction of typos in Section 2 and 6. Improved quality of plots with some modifications to clarify the content</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 84, 1122 (2024) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2405.17967">arXiv:2405.17967</a> <span> [<a href="https://arxiv.org/pdf/2405.17967">pdf</a>, <a href="https://arxiv.org/format/2405.17967">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"> Charge Amplification in Low Pressure CF4:SF6:He Mixtures with a Multi-Mesh ThGEM for Directional Dark Matter Searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Borra%2C+F">F. Borra</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+D+S">D. S. Cardoso</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Crane%2C+T">T. Crane</a>, <a href="/search/physics?searchtype=author&query=Dane%2C+E">E. Dane</a>, <a href="/search/physics?searchtype=author&query=DAstolfo%2C+M">M. DAstolfo</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Di+Giambattista%2C+F">F. Di Giambattista</a>, <a href="/search/physics?searchtype=author&query=DImperio%2C+G">G. DImperio</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=Santos%2C+J+M+F+D">J. M. F. Dos Santos</a>, <a href="/search/physics?searchtype=author&query=Ezeribe%2C+A+C">A. C. Ezeribe</a>, <a href="/search/physics?searchtype=author&query=Fiorina%2C+D">D. Fiorina</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Junior%2C+H+P+L">H. P. Lima Junior</a>, <a href="/search/physics?searchtype=author&query=Lopes%2C+G+S+P">G. S. P. Lopes</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Mano%2C+R+D+P">R. D. P. Mano</a> , et al. (24 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="2405.17967v1-abstract-short" style="display: inline;"> The CYGNO collaboration is developing next generation directional Dark Matter (DM) detection experiments, using gaseous Time Projection Chambers (TPCs), as a robust method for identifying Weakly Interacting Massive Particles (WIMPs) below the Neutrino Fog. SF6 is potentially ideal for this since it provides a high fluorine content, enhancing sensitivity to spin-dependent interactions and, as a Neg… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.17967v1-abstract-full').style.display = 'inline'; document.getElementById('2405.17967v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2405.17967v1-abstract-full" style="display: none;"> The CYGNO collaboration is developing next generation directional Dark Matter (DM) detection experiments, using gaseous Time Projection Chambers (TPCs), as a robust method for identifying Weakly Interacting Massive Particles (WIMPs) below the Neutrino Fog. SF6 is potentially ideal for this since it provides a high fluorine content, enhancing sensitivity to spin-dependent interactions and, as a Negative Ion Drift (NID) gas, reduces charge diffusion leading to improved positional resolution. CF4, although not a NID gas, has also been identified as a favourable gas target as it provides a scintillation signal which can be used for a complimentary light/charge readout approach. These gases can operate at low pressures to elongate Nuclear Recoil (NR) tracks and facilitate directional measurements. In principle, He could be added to low pressure SF6/CF4 without significant detriment to the length of 16S, 12C, and 19F recoils. This would improve the target mass, sensitivity to lower WIMP masses, and offer the possibility of atmospheric operation; potentially reducing the cost of a containment vessel. In this article, we present gas gain and energy resolution measurements, taken with a Multi-Mesh Thick Gaseous Electron Multiplier (MMThGEM), in low pressure SF6 and CF4:SF6 mixtures following the addition of He. We find that the CF4:SF6:He mixtures tested were able to produce gas gains on the order of 10^4 up to a total pressure of 100 Torr. These results demonstrate an order of magnitude improvement in charge amplification in NID gas mixtures with a He component. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2405.17967v1-abstract-full').style.display = 'none'; document.getElementById('2405.17967v1-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 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">Corresponding Author: A.G. McLean</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.03677">arXiv:2404.03677</a> <span> [<a href="https://arxiv.org/pdf/2404.03677">pdf</a>, <a href="https://arxiv.org/ps/2404.03677">ps</a>, <a href="https://arxiv.org/format/2404.03677">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"> Status of the production of GEM chambers for the CMS experiment at Large Hadron Collider </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Campagnola%2C+R">R. Campagnola</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Meola%2C+S">S. Meola</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Tesauro%2C+R">R. Tesauro</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="2404.03677v1-abstract-short" style="display: inline;"> The High Luminosity LHC phase includes an upgrade to the muon stations for the CMS Experiment. CMS trigger and muon identification performance will be crucial, and it is, therefore, necessary to install new GEM stations to extend acceptance in the high-畏 region. An explanation of the quality control test and an update on the status of production will be provided. </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.03677v1-abstract-full" style="display: none;"> The High Luminosity LHC phase includes an upgrade to the muon stations for the CMS Experiment. CMS trigger and muon identification performance will be crucial, and it is, therefore, necessary to install new GEM stations to extend acceptance in the high-畏 region. An explanation of the quality control test and an update on the status of production will be provided. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.03677v1-abstract-full').style.display = 'none'; document.getElementById('2404.03677v1-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 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.19408">arXiv:2402.19408</a> <span> [<a href="https://arxiv.org/pdf/2402.19408">pdf</a>, <a href="https://arxiv.org/format/2402.19408">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link 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="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.nima.2024.169672">10.1016/j.nima.2024.169672 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> In-beam performance of a Resistive Plate Chamber operated with eco-friendly gas mixtures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quaglia%2C+L">L. Quaglia</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Aielli%2C+G">G. Aielli</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Arena%2C+M+C">M. C. Arena</a>, <a href="/search/physics?searchtype=author&query=Barroso%2C+M">M. Barroso</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Boscherini%2C+D">D. Boscherini</a>, <a href="/search/physics?searchtype=author&query=Bordon%2C+F">F. Bordon</a>, <a href="/search/physics?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/physics?searchtype=author&query=Buontempo%2C+S">S. Buontempo</a>, <a href="/search/physics?searchtype=author&query=Busato%2C+M">M. Busato</a>, <a href="/search/physics?searchtype=author&query=Camarri%2C+P">P. Camarri</a>, <a href="/search/physics?searchtype=author&query=Cardarelli%2C+R">R. Cardarelli</a>, <a href="/search/physics?searchtype=author&query=Congedo%2C+L">L. Congedo</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=De+Serio%2C+M">M. De Serio</a>, <a href="/search/physics?searchtype=author&query=Di+Ciaccio%2C+A">A. Di Ciaccio</a>, <a href="/search/physics?searchtype=author&query=Di+Stante%2C+L">L. Di Stante</a>, <a href="/search/physics?searchtype=author&query=Dupieux%2C+P">P. Dupieux</a>, <a href="/search/physics?searchtype=author&query=Eysermans%2C+J">J. Eysermans</a>, <a href="/search/physics?searchtype=author&query=Ferretti%2C+A">A. Ferretti</a>, <a href="/search/physics?searchtype=author&query=Galati%2C+G">G. Galati</a>, <a href="/search/physics?searchtype=author&query=Gagliardi%2C+M">M. Gagliardi</a> , et al. (32 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="2402.19408v1-abstract-short" style="display: inline;"> ALICE (A Large Ion Collider Experiment) studies the Quark-Gluon Plasma (QGP): a deconfined state of matter obtained in ultra-relativistic heavy-ion collisions. One of the probes for QGP study are quarkonia and open heavy flavour, of which ALICE exploits the muonic decay. A set of Resistive Plate Chambers (RPCs), placed in the forward rapidity region of the ALICE detector, is used for muon identifi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.19408v1-abstract-full').style.display = 'inline'; document.getElementById('2402.19408v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.19408v1-abstract-full" style="display: none;"> ALICE (A Large Ion Collider Experiment) studies the Quark-Gluon Plasma (QGP): a deconfined state of matter obtained in ultra-relativistic heavy-ion collisions. One of the probes for QGP study are quarkonia and open heavy flavour, of which ALICE exploits the muonic decay. A set of Resistive Plate Chambers (RPCs), placed in the forward rapidity region of the ALICE detector, is used for muon identification purposes. The correct operation of these detectors is ensured by the choice of the proper gas mixture. Currently they are operated with a mixture of C$_{2}$H$_{2}$F$_{4}$, i-C$_{4}$H$_{10}$ and SF$_{6}$ but, starting from 2017, new EU regulations have enforced a progressive phase-out of C$_{2}$H$_{2}$F$_{4}$ because of its large Global Warming Potential (GWP), making it difficult and costly to purchase. CERN asked LHC experiments to reduce greenhouse gases emissions, to which RPC operation contributes significantly. A possible candidate for C$_{2}$H$_{2}$F$_{4}$ replacement is the C$_{3}$H$_{2}$F$_{4}$ (diluted with other gases, such as CO$_{2}$), which has been extensively tested using cosmic rays. Promising gas mixtures have been devised; the next crucial steps are the detailed in-beam characterization of such mixtures as well as the study of their performance under increasing irradiation levels. This contribution will describe the methodology and results of beam tests carried out at the CERN GIF++ (equipped with a high activity $^{137}$Cs source and muon beam) with an ALICE-like RPC prototype, operated with several mixtures with varying proportions of CO$_{2}$, C$_{3}$H$_{2}$F$_{4}$, i-C$_{4}$H$_{10}$ and SF$_{6}$ . Absorbed currents, efficiencies, prompt charges, cluster sizes, time resolutions and rate capabilities will be presented, both from digitized (for detailed shape and charge analysis) and discriminated (using the same front-end electronics as employed in ALICE) signals. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.19408v1-abstract-full').style.display = 'none'; document.getElementById('2402.19408v1-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> 29 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2402.19395">arXiv:2402.19395</a> <span> [<a href="https://arxiv.org/pdf/2402.19395">pdf</a>, <a href="https://arxiv.org/format/2402.19395">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/10.1016/j.nima.2024.169747">10.1016/j.nima.2024.169747 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exploring Eco-Friendly Gas Mixtures for Resistive Plate Chambers: A Comprehensive Study on Performance and Aging </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=collaboration%2C+T+R+E">The RPC ECOGas@GIF++ collaboration</a>, <a href="/search/physics?searchtype=author&query=%3A"> :</a>, <a href="/search/physics?searchtype=author&query=Quaglia%2C+L">L. Quaglia</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Aielli%2C+G">G. Aielli</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Arena%2C+M+C">M. C. Arena</a>, <a href="/search/physics?searchtype=author&query=Barroso%2C+M">M. Barroso</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Boscherini%2C+D">D. Boscherini</a>, <a href="/search/physics?searchtype=author&query=Bordon%2C+F">F. Bordon</a>, <a href="/search/physics?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/physics?searchtype=author&query=Buontempo%2C+S">S. Buontempo</a>, <a href="/search/physics?searchtype=author&query=Busato%2C+M">M. Busato</a>, <a href="/search/physics?searchtype=author&query=Camarri%2C+P">P. Camarri</a>, <a href="/search/physics?searchtype=author&query=Cardarelli%2C+R">R. Cardarelli</a>, <a href="/search/physics?searchtype=author&query=Congedo%2C+L">L. Congedo</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=De+Serio%2C+M">M. De Serio</a>, <a href="/search/physics?searchtype=author&query=Di+Ciaccio%2C+A">A. Di Ciaccio</a>, <a href="/search/physics?searchtype=author&query=Di+Stante%2C+L">L. Di Stante</a>, <a href="/search/physics?searchtype=author&query=Dupieux%2C+P">P. Dupieux</a>, <a href="/search/physics?searchtype=author&query=Eysermans%2C+J">J. Eysermans</a>, <a href="/search/physics?searchtype=author&query=Ferretti%2C+A">A. Ferretti</a> , et al. (35 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="2402.19395v1-abstract-short" style="display: inline;"> Resistive Plate Chambers (RPCs) are gaseous detectors widely used in high energy physics experiments, operating with a gas mixture primarily containing Tetrafluoroethane (C$_{2}$H$_{2}$F$_{4}$), commonly known as R-134a, which has a global warming potential (GWP) of 1430. To comply with European regulations and explore environmentally friendly alternatives, the RPC EcoGas@GIF++ collaboration, invo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.19395v1-abstract-full').style.display = 'inline'; document.getElementById('2402.19395v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2402.19395v1-abstract-full" style="display: none;"> Resistive Plate Chambers (RPCs) are gaseous detectors widely used in high energy physics experiments, operating with a gas mixture primarily containing Tetrafluoroethane (C$_{2}$H$_{2}$F$_{4}$), commonly known as R-134a, which has a global warming potential (GWP) of 1430. To comply with European regulations and explore environmentally friendly alternatives, the RPC EcoGas@GIF++ collaboration, involving ALICE, ATLAS, CMS, LHCb/SHiP, and EP-DT communities, has undertaken intensive R\&D efforts to explore new gas mixtures for RPC technology. A leading alternative under investigation is HFO1234ze, boasting a low GWP of 6 and demonstrating reasonable performance compared to R-134a. Over the past few years, RPC detectors with slightly different characteristics and electronics have been studied using HFO and CO$_{2}$-based gas mixtures at the CERN Gamma Irradiation Facility. An aging test campaign was launched in August 2022, and during the latest test beam in July 2023, all detector systems underwent evaluation. This contribution will report the results of the aging studies and the performance evaluations of the detectors with and without irradiation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2402.19395v1-abstract-full').style.display = 'none'; document.getElementById('2402.19395v1-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> 29 February, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2024. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2311.17574">arXiv:2311.17574</a> <span> [<a href="https://arxiv.org/pdf/2311.17574">pdf</a>, <a href="https://arxiv.org/format/2311.17574">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"> Preliminary results on the long term operation of RPCs with eco-friendly gas mixtures under irradiation at the CERN Gamma Irradiation Facility </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quaglia%2C+L">L. Quaglia</a>, <a href="/search/physics?searchtype=author&query=Ramos%2C+D">D. Ramos</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Aielli%2C+G">G. Aielli</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Arena%2C+M+C">M. C. Arena</a>, <a href="/search/physics?searchtype=author&query=Barroso%2C+M">M. Barroso</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Boscherini%2C+D">D. Boscherini</a>, <a href="/search/physics?searchtype=author&query=Bordon%2C+F">F. Bordon</a>, <a href="/search/physics?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/physics?searchtype=author&query=Buontempo%2C+S">S. Buontempo</a>, <a href="/search/physics?searchtype=author&query=Busato%2C+M">M. Busato</a>, <a href="/search/physics?searchtype=author&query=Camarri%2C+P">P. Camarri</a>, <a href="/search/physics?searchtype=author&query=Cardarelli%2C+R">R. Cardarelli</a>, <a href="/search/physics?searchtype=author&query=Congedo%2C+L">L. Congedo</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=De+Serio%2C+M">M. De Serio</a>, <a href="/search/physics?searchtype=author&query=Di+Ciacco%2C+A">A. Di Ciacco</a>, <a href="/search/physics?searchtype=author&query=Di+Stante%2C+L">L. Di Stante</a>, <a href="/search/physics?searchtype=author&query=Dupieux%2C+P">P. Dupieux</a>, <a href="/search/physics?searchtype=author&query=Eysermans%2C+J">J. Eysermans</a>, <a href="/search/physics?searchtype=author&query=Ferretti%2C+A">A. Ferretti</a>, <a href="/search/physics?searchtype=author&query=Galati%2C+G">G. Galati</a> , et al. (33 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="2311.17574v1-abstract-short" style="display: inline;"> Since 2019 a collaboration between researchers from various institutes and experiments (i.e. ATLAS, CMS, ALICE, LHCb/SHiP and the CERN EP-DT group), has been operating several RPCs with diverse electronics, gas gap thicknesses and detector layouts at the CERN Gamma Irradiation Facility (GIF++). The studies aim at assessing the performance of RPCs when filled with new eco-friendly gas mixtures in a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.17574v1-abstract-full').style.display = 'inline'; document.getElementById('2311.17574v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.17574v1-abstract-full" style="display: none;"> Since 2019 a collaboration between researchers from various institutes and experiments (i.e. ATLAS, CMS, ALICE, LHCb/SHiP and the CERN EP-DT group), has been operating several RPCs with diverse electronics, gas gap thicknesses and detector layouts at the CERN Gamma Irradiation Facility (GIF++). The studies aim at assessing the performance of RPCs when filled with new eco-friendly gas mixtures in avalanche mode and in view of evaluating possible ageing effects after long high background irradiation periods, e.g. High-Luminosity LHC phase. This challenging research is also part of a task of the European AidaInnova project. A promising eco-friendly gas identified for RPC operation is the tetrafluoruropropene (C$_{3}$H$_{2}$F$_{4}$, commercially known as HFO-1234ze) that has been studied at the CERN GIF++ in combination with different percentages of CO$_2$. Between the end of 2021 and 2022 several beam tests have been carried out to establish the performance of RPCs operated with such mixtures before starting the irradiation campaign for the ageing study. Results of these tests for different RPCs layouts and different gas mixtures, under increasing background rates are presented here, together with the preliminary outcome of the detector ageing tests. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.17574v1-abstract-full').style.display = 'none'; document.getElementById('2311.17574v1-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> 29 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/2311.08259">arXiv:2311.08259</a> <span> [<a href="https://arxiv.org/pdf/2311.08259">pdf</a>, <a href="https://arxiv.org/format/2311.08259">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"> High-rate tests on Resistive Plate Chambers operated with eco-friendly gas mixtures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Aielli%2C+G">G. Aielli</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Arena%2C+M+C">M. C. Arena</a>, <a href="/search/physics?searchtype=author&query=Barroso%2C+M">M. Barroso</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bordon%2C+F">F. Bordon</a>, <a href="/search/physics?searchtype=author&query=Boscherini%2C+D">D. Boscherini</a>, <a href="/search/physics?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/physics?searchtype=author&query=Buontempo%2C+S">S. Buontempo</a>, <a href="/search/physics?searchtype=author&query=Busato%2C+M">M. Busato</a>, <a href="/search/physics?searchtype=author&query=Camarri%2C+P">P. Camarri</a>, <a href="/search/physics?searchtype=author&query=Cardarelli%2C+R">R. Cardarelli</a>, <a href="/search/physics?searchtype=author&query=Congedo%2C+L">L. Congedo</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=De+Serio%2C+M">M. De Serio</a>, <a href="/search/physics?searchtype=author&query=Di+Ciaccio%2C+A">A. Di Ciaccio</a>, <a href="/search/physics?searchtype=author&query=Di+Stante%2C+L">L. Di Stante</a>, <a href="/search/physics?searchtype=author&query=Dupieux%2C+P">P. Dupieux</a>, <a href="/search/physics?searchtype=author&query=Eysermans%2C+J">J. Eysermans</a>, <a href="/search/physics?searchtype=author&query=Ferretti%2C+A">A. Ferretti</a>, <a href="/search/physics?searchtype=author&query=Galati%2C+G">G. Galati</a>, <a href="/search/physics?searchtype=author&query=Gagliardi%2C+M">M. Gagliardi</a>, <a href="/search/physics?searchtype=author&query=Guida%2C+R">R. Guida</a> , et al. (30 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="2311.08259v1-abstract-short" style="display: inline;"> Results obtained by the RPC ECOgas@GIF++ Collaboration, using Resistive Plate Chambers operated with new, eco-friendly gas mixtures, based on Tetrafluoropropene and carbon dioxide, are shown and discussed in this paper. Tests aimed to assess the performance of this kind of detectors in high-irradiation conditions, analogous to the ones foreseen for the coming years at the Large Hadron Collider exp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08259v1-abstract-full').style.display = 'inline'; document.getElementById('2311.08259v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2311.08259v1-abstract-full" style="display: none;"> Results obtained by the RPC ECOgas@GIF++ Collaboration, using Resistive Plate Chambers operated with new, eco-friendly gas mixtures, based on Tetrafluoropropene and carbon dioxide, are shown and discussed in this paper. Tests aimed to assess the performance of this kind of detectors in high-irradiation conditions, analogous to the ones foreseen for the coming years at the Large Hadron Collider experiments, were performed, and demonstrate a performance basically similar to the one obtained with the gas mixtures currently in use, based on Tetrafluoroethane, which is being progressively phased out for its possible contribution to the greenhouse effect. Long term aging tests are also being carried out, with the goal to demonstrate the possibility of using these eco-friendly gas mixtures during the whole High Luminosity phase of the Large Hadron Collider. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2311.08259v1-abstract-full').style.display = 'none'; document.getElementById('2311.08259v1-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 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">Submitted to European Physical Journal C on October 24, 2023, 15 pages, 14 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/2306.16856">arXiv:2306.16856</a> <span> [<a href="https://arxiv.org/pdf/2306.16856">pdf</a>, <a href="https://arxiv.org/ps/2306.16856">ps</a>, <a href="https://arxiv.org/format/2306.16856">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/10.1016/j.nima.2023.168207">10.1016/j.nima.2023.168207 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> LIME -- a gas TPC prototype for directional Dark Matter search for the CYGNO experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">Fernando Domingues Amaro</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">Elisabetta Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">Luigi Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">Stefano Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">Cesidio Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">Michele Caponero</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+D+S">Danilo Santos Cardoso</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">Gianluca Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">Andr茅 Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">Igor Abritta Costa</a>, <a href="/search/physics?searchtype=author&query=Dan%C3%A9%2C+E">Emiliano Dan茅</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">Giorgio Dho</a>, <a href="/search/physics?searchtype=author&query=Di+Giambattista%2C+F">Flaminia Di Giambattista</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">Emanuele Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">Giulia D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">Francesco Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Junior%2C+H+P+L">Herman Pessoa Lima Junior</a>, <a href="/search/physics?searchtype=author&query=Lopes%2C+G+S+P">Guilherme Sebastiao Pinheiro Lopes</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">Giovanni Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Mano%2C+R+D+P">Rui Daniel Passos Mano</a>, <a href="/search/physics?searchtype=author&query=Gregorio%2C+R+R+M">Robert Renz Marcelo Gregorio</a>, <a href="/search/physics?searchtype=author&query=Marques%2C+D+J+G">David Jos茅 Gaspar Marques</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">Giovanni Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=McLean%2C+A+G">Alasdair Gregor McLean</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">Andrea Messina</a> , et al. (22 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="2306.16856v1-abstract-short" style="display: inline;"> The CYGNO experiment aims at the development of a large gaseous TPC with GEM-based amplification and an optical readout by means of PMTs and scientific CMOS cameras for 3D tracking down to O(keV) energies, for the directional detection of rare events such as low mass Dark Matter and solar neutrino interactions. The largest prototype built so far towards the realisation of the CYGNO experiment demo… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.16856v1-abstract-full').style.display = 'inline'; document.getElementById('2306.16856v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.16856v1-abstract-full" style="display: none;"> The CYGNO experiment aims at the development of a large gaseous TPC with GEM-based amplification and an optical readout by means of PMTs and scientific CMOS cameras for 3D tracking down to O(keV) energies, for the directional detection of rare events such as low mass Dark Matter and solar neutrino interactions. The largest prototype built so far towards the realisation of the CYGNO experiment demonstrator is the 50 L active volume LIME, with 4 PMTs and a single sCMOS imaging a 33$\times$33 cm\textsuperscript{2} area for 50 cm drift, that has been installed in underground Laboratori Nazionali del Gran Sasso in February 2022. We will illustrate LIME performances as evaluated overground in Laboratori Nazionali di Frascati by means of radioactive X-ray sources, and in particular the detector stability, energy response and energy resolution. We will discuss the MC simulation developed to reproduce the detector response and show the comparison with actual data. We will furthermore examine the background simulation worked out for LIME underground data taking and illustrate the foreseen expected measurement and results in terms of natural and materials intrinsic radioactivity characterisation and measurement of the LNGS underground natural neutron flux. The results that will be obtained by underground LIME installation will be paramount in the optimisation of the CYGNO demonstrator, since this is foreseen to be composed by multiple modules with the same LIME dimensions and characteristics. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.16856v1-abstract-full').style.display = 'none'; document.getElementById('2306.16856v1-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> 29 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2306.04568">arXiv:2306.04568</a> <span> [<a href="https://arxiv.org/pdf/2306.04568">pdf</a>, <a href="https://arxiv.org/format/2306.04568">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/10.1016/j.nima.2023.168325">10.1016/j.nima.2023.168325 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The CYGNO experiment, a directional detector for direct Dark Matter searches </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">F. D. Amaro</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+D+S">D. S. Cardoso</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">A. Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Dan%C3%A9%2C+E">E. Dan茅</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Di+Giambattista%2C+F">F. Di Giambattista</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=J%C3%B9nior%2C+H+P+L">H. P. L. J霉nior</a>, <a href="/search/physics?searchtype=author&query=Lopes%2C+G+S+P">G. S. P. Lopes</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Mano%2C+R+D+P">R. D. P. Mano</a>, <a href="/search/physics?searchtype=author&query=Gregorio%2C+R+R+M">R. R. M. Gregorio</a>, <a href="/search/physics?searchtype=author&query=Marques%2C+D+J+G">D. J. G. Marques</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=McLean%2C+A+G">A. G. McLean</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a> , et al. (22 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="2306.04568v1-abstract-short" style="display: inline;"> The CYGNO project aims at the development of a high precision optical readout gaseous Tima Projection Chamber (TPC) for directional dark matter (DM) searches, to be hosted at Laboratori Nazionali del Gran Sasso (LNGS). CYGNO employs a He:CF$_4$ gas mixture at atmospheric pressure with a Gas Electron Multiplier (GEM) based amplification structure coupled to an optical readout comprised of sCMOS cam… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.04568v1-abstract-full').style.display = 'inline'; document.getElementById('2306.04568v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2306.04568v1-abstract-full" style="display: none;"> The CYGNO project aims at the development of a high precision optical readout gaseous Tima Projection Chamber (TPC) for directional dark matter (DM) searches, to be hosted at Laboratori Nazionali del Gran Sasso (LNGS). CYGNO employs a He:CF$_4$ gas mixture at atmospheric pressure with a Gas Electron Multiplier (GEM) based amplification structure coupled to an optical readout comprised of sCMOS cameras and photomultiplier tubes (PMTs). This experimental setup allows to achieve 3D tracking and background rejection down to O(1) keV energy, to boost sensitivity to low WIMP masses. The characteristics of the optical readout approach in terms of the light yield will be illustrated along with the particle identification properties. The project timeline foresees, in the next 2-3 years, the realisation and installation of a 0.4 m$^3$ TPC in the underground laboratories at LNGS to act as a demonstrator. Finally, the studies of the expected DM sensitivities of the CYGNO demonstrator will be presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2306.04568v1-abstract-full').style.display = 'none'; document.getElementById('2306.04568v1-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 June, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2302.02764">arXiv:2302.02764</a> <span> [<a href="https://arxiv.org/pdf/2302.02764">pdf</a>, <a href="https://arxiv.org/format/2302.02764">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/10.1016/j.nima.2023.168449">10.1016/j.nima.2023.168449 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Machine Learning based tool for CMS RPC currents quality monitoring </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shumka%2C+E">E. Shumka</a>, <a href="/search/physics?searchtype=author&query=Samalan%2C+A">A. Samalan</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Sawy%2C+M+E">M. El Sawy</a>, <a href="/search/physics?searchtype=author&query=Alves%2C+G+A">G. A. Alves</a>, <a href="/search/physics?searchtype=author&query=Marujo%2C+F">F. Marujo</a>, <a href="/search/physics?searchtype=author&query=Coelho%2C+E+A">E. A. Coelho</a>, <a href="/search/physics?searchtype=author&query=Da+Costa%2C+E+M">E. M. Da Costa</a>, <a href="/search/physics?searchtype=author&query=Nogima%2C+H">H. Nogima</a>, <a href="/search/physics?searchtype=author&query=Santoro%2C+A">A. Santoro</a>, <a href="/search/physics?searchtype=author&query=De+Souza%2C+S+F">S. Fonseca De Souza</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=Thiel%2C+M">M. Thiel</a>, <a href="/search/physics?searchtype=author&query=Amarilo%2C+K+M">K. Mota Amarilo</a>, <a href="/search/physics?searchtype=author&query=Filho%2C+M+B+F">M. Barroso Ferreira Filho</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Soultanov%2C+G">G. Soultanov</a>, <a href="/search/physics?searchtype=author&query=Dimitrov%2C+A">A. Dimitrov</a>, <a href="/search/physics?searchtype=author&query=Litov%2C+L">L. Litov</a>, <a href="/search/physics?searchtype=author&query=Pavlov%2C+B">B. Pavlov</a>, <a href="/search/physics?searchtype=author&query=Petkov%2C+P">P. Petkov</a> , et al. (83 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="2302.02764v1-abstract-short" style="display: inline;"> The muon system of the CERN Compact Muon Solenoid (CMS) experiment includes more than a thousand Resistive Plate Chambers (RPC). They are gaseous detectors operated in the hostile environment of the CMS underground cavern on the Large Hadron Collider where pp luminosities of up to $2\times 10^{34}$ $\text{cm}^{-2}\text{s}^{-1}$ are routinely achieved. The CMS RPC system performance is constantly m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02764v1-abstract-full').style.display = 'inline'; document.getElementById('2302.02764v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2302.02764v1-abstract-full" style="display: none;"> The muon system of the CERN Compact Muon Solenoid (CMS) experiment includes more than a thousand Resistive Plate Chambers (RPC). They are gaseous detectors operated in the hostile environment of the CMS underground cavern on the Large Hadron Collider where pp luminosities of up to $2\times 10^{34}$ $\text{cm}^{-2}\text{s}^{-1}$ are routinely achieved. The CMS RPC system performance is constantly monitored and the detector is regularly maintained to ensure stable operation. The main monitorable characteristics are dark current, efficiency for muon detection, noise rate etc. Herein we describe an automated tool for CMS RPC current monitoring which uses Machine Learning techniques. We further elaborate on the dedicated generalized linear model proposed already and add autoencoder models for self-consistent predictions as well as hybrid models to allow for RPC current predictions in a distant future. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2302.02764v1-abstract-full').style.display = 'none'; document.getElementById('2302.02764v1-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 February, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2211.16591">arXiv:2211.16591</a> <span> [<a href="https://arxiv.org/pdf/2211.16591">pdf</a>, <a href="https://arxiv.org/format/2211.16591">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/10.1016/j.nima.2023.168271">10.1016/j.nima.2023.168271 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> RPC based tracking system at CERN GIF++ facility </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amarilo%2C+K+M">K. Mota Amarilo</a>, <a href="/search/physics?searchtype=author&query=Samalan%2C+A">A. Samalan</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Sawy%2C+M+E">M. El Sawy</a>, <a href="/search/physics?searchtype=author&query=Alves%2C+G+A">G. A. Alves</a>, <a href="/search/physics?searchtype=author&query=Marujo%2C+F">F. Marujo</a>, <a href="/search/physics?searchtype=author&query=Coelho%2C+E+A">E. A. Coelho</a>, <a href="/search/physics?searchtype=author&query=Da+Costa%2C+E+M">E. M. Da Costa</a>, <a href="/search/physics?searchtype=author&query=Nogima%2C+H">H. Nogima</a>, <a href="/search/physics?searchtype=author&query=Santoro%2C+A">A. Santoro</a>, <a href="/search/physics?searchtype=author&query=De+Souza%2C+S+F">S. Fonseca De Souza</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=Thiel%2C+M">M. Thiel</a>, <a href="/search/physics?searchtype=author&query=Filho%2C+M+B+F">M. Barroso Ferreira Filho</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Soultanov%2C+G">G. Soultanov</a>, <a href="/search/physics?searchtype=author&query=Dimitrov%2C+A">A. Dimitrov</a>, <a href="/search/physics?searchtype=author&query=Litov%2C+L">L. Litov</a>, <a href="/search/physics?searchtype=author&query=Pavlov%2C+B">B. Pavlov</a>, <a href="/search/physics?searchtype=author&query=Petkov%2C+P">P. Petkov</a>, <a href="/search/physics?searchtype=author&query=Petrov%2C+A">A. Petrov</a> , et al. (83 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="2211.16591v1-abstract-short" style="display: inline;"> With the HL-LHC upgrade of the LHC machine, an increase of the instantaneous luminosity by a factor of five is expected and the current detection systems need to be validated for such working conditions to ensure stable data taking. At the CERN Gamma Irradiation Facility (GIF++) many muon detectors undergo such studies, but the high gamma background can pose a challenge to the muon trigger system… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.16591v1-abstract-full').style.display = 'inline'; document.getElementById('2211.16591v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2211.16591v1-abstract-full" style="display: none;"> With the HL-LHC upgrade of the LHC machine, an increase of the instantaneous luminosity by a factor of five is expected and the current detection systems need to be validated for such working conditions to ensure stable data taking. At the CERN Gamma Irradiation Facility (GIF++) many muon detectors undergo such studies, but the high gamma background can pose a challenge to the muon trigger system which is exposed to many fake hits from the gamma background. A tracking system using RPCs is implemented to clean the fake hits, taking profit of the high muon efficiency of these chambers. This work will present the tracking system configuration, used detector analysis algorithm and results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2211.16591v1-abstract-full').style.display = 'none'; document.getElementById('2211.16591v1-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> 29 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">12 pages, 9 figures. Contribution to XVI Workshop on Resistive Plate Chambers and Related Detectors (RPC2022), September 26-30 2022. Submitted to Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2210.14527">arXiv:2210.14527</a> <span> [<a href="https://arxiv.org/pdf/2210.14527">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/10.1016/j.nima.2022.167656">10.1016/j.nima.2022.167656 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Design of a Resistive Plate Chamber using additive manufacturing </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Campagnola%2C+R">R. Campagnola</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Gebremedhin%2C+H">H. Gebremedhin</a>, <a href="/search/physics?searchtype=author&query=Hess%2C+J">J. Hess</a>, <a href="/search/physics?searchtype=author&query=Horsley%2C+J">J. Horsley</a>, <a href="/search/physics?searchtype=author&query=Landis%2C+M">M. Landis</a>, <a href="/search/physics?searchtype=author&query=Meola%2C+S">S. Meola</a>, <a href="/search/physics?searchtype=author&query=Nester%2C+D">D. Nester</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Peachey-Stoner%2C+L">L. Peachey-Stoner</a>, <a href="/search/physics?searchtype=author&query=Peachey-Stoner%2C+R">R. Peachey-Stoner</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Stutzman%2C+L">L. Stutzman</a>, <a href="/search/physics?searchtype=author&query=Tezazu%2C+R">R. Tezazu</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="2210.14527v1-abstract-short" style="display: inline;"> Driven by the recent improvement in additive manufacturing technologies, we designed a detector that can be fully printed with a standard and commercial 3D printer. The main goals of this research concern the marginal design and construction costs, the reproducibility/modularity of the products, and the reduced assembly time. During the first phase of this research, after determining the most suit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.14527v1-abstract-full').style.display = 'inline'; document.getElementById('2210.14527v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2210.14527v1-abstract-full" style="display: none;"> Driven by the recent improvement in additive manufacturing technologies, we designed a detector that can be fully printed with a standard and commercial 3D printer. The main goals of this research concern the marginal design and construction costs, the reproducibility/modularity of the products, and the reduced assembly time. During the first phase of this research, after determining the most suitable material, we produced 10 examples of detectors. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2210.14527v1-abstract-full').style.display = 'none'; document.getElementById('2210.14527v1-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 October, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">2 pages, 4 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/2209.02020">arXiv:2209.02020</a> <span> [<a href="https://arxiv.org/pdf/2209.02020">pdf</a>, <a href="https://arxiv.org/format/2209.02020">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"> Searching for an eco-friendly gas mixture for the ALICE Resistive Plate Chambers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Quaglia%2C+L">Luca Quaglia</a>, <a href="/search/physics?searchtype=author&query=Cardarelli%2C+R">R. Cardarelli</a>, <a href="/search/physics?searchtype=author&query=Liberti%2C+B">B. Liberti</a>, <a href="/search/physics?searchtype=author&query=Pastori%2C+E">E. Pastori</a>, <a href="/search/physics?searchtype=author&query=Proto%2C+G">G. Proto</a>, <a href="/search/physics?searchtype=author&query=Aielli%2C+G">G. Aielli</a>, <a href="/search/physics?searchtype=author&query=Camarri%2C+P">P. Camarri</a>, <a href="/search/physics?searchtype=author&query=Di+Ciacco%2C+A">A. Di Ciacco</a>, <a href="/search/physics?searchtype=author&query=Di+Stante%2C+L">L. Di Stante</a>, <a href="/search/physics?searchtype=author&query=Santonico%2C+R">R. Santonico</a>, <a href="/search/physics?searchtype=author&query=Alberghi%2C+G">G. Alberghi</a>, <a href="/search/physics?searchtype=author&query=Boscherini%2C+D">D. Boscherini</a>, <a href="/search/physics?searchtype=author&query=Bruni%2C+A">A. Bruni</a>, <a href="/search/physics?searchtype=author&query=Massa%2C+L">L. Massa</a>, <a href="/search/physics?searchtype=author&query=Polini%2C+A">A. Polini</a>, <a href="/search/physics?searchtype=author&query=Romano%2C+M">M. Romano</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+A+R+M">A. Russo M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Congedo%2C+L">L. Congedo</a> , et al. (25 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="2209.02020v1-abstract-short" style="display: inline;"> The ALICE RPCs are operated with a mixture of 89.7% $C_{2}H_{2}F_{4}$, 10% i-$C_{4}H_{10}$ and 0.3% $SF_{6}$. $C_{2}H_{2}F_{4}$ and $SF_{6}$ are fluorinated greenhouse gases with a high Global Warming Potential (GWP). New European Union regulations have imposed a progressive phase-down of the production and usage of F-gases, aiming to cut down their emission by two thirds in 2030 with respect to 2… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.02020v1-abstract-full').style.display = 'inline'; document.getElementById('2209.02020v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.02020v1-abstract-full" style="display: none;"> The ALICE RPCs are operated with a mixture of 89.7% $C_{2}H_{2}F_{4}$, 10% i-$C_{4}H_{10}$ and 0.3% $SF_{6}$. $C_{2}H_{2}F_{4}$ and $SF_{6}$ are fluorinated greenhouse gases with a high Global Warming Potential (GWP). New European Union regulations have imposed a progressive phase-down of the production and usage of F-gases, aiming to cut down their emission by two thirds in 2030 with respect to 2014. Even though research activities are excluded from these regulations, the phase-down will inevitably increase their price and CERN is also aiming to cut down on its emissions. For these reasons it is crucial to find a more eco-friendly gas mixture for RPCs by the time of the LHC long shutdown 3, foreseen in 2026. Since $C_{2}H_{2}F_{4}$ is the main contributor to the mixture GWP, an extensive R&D process has started to replace it with tetrafluoropropene ($C_{3}H_{2}F_{4}$), due to its chemical similarity with $C_{2}H_{2}F_{4}$ and its low GWP (around 7). Preliminary tests with cosmic rays have shown promising results in terms of detector performance. The next step is to study the long-term behavior of RPCs operated with these new gas mixtures (aging studies). Since this is a subject of interest for all (and not only) the LHC experiments, a collaboration, ECOgas@GIF++, was setup to carry out joint studies. Among others, a small ALICE-like RPC was installed at the Gamma Irradiation Facility at CERN, where they are exposed to a strong radiation field, coming from a 12.5 TBq $^{137}$Cs source, which allows one to simulate many years of operation in a relatively short time. The facility also provides a muon beam at specific times of the year, which can be used to study the detector performance (e.g. efficiency and cluster size) during and after irradiation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.02020v1-abstract-full').style.display = 'none'; document.getElementById('2209.02020v1-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> <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 the LHCp 2022 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/2203.12037">arXiv:2203.12037</a> <span> [<a href="https://arxiv.org/pdf/2203.12037">pdf</a>, <a href="https://arxiv.org/format/2203.12037">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/10.1016/j.nima.2022.166716">10.1016/j.nima.2022.166716 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Quality Control of Mass-Produced GEM Detectors for the CMS GE1/1 Muon Upgrade </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdalla%2C+H">H. Abdalla</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A">A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=AbuZeid%2C+S">S. AbuZeid</a>, <a href="/search/physics?searchtype=author&query=Agapitos%2C+A">A. Agapitos</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+A">A. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+A">A. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aim%C3%A8%2C+C">C. Aim猫</a>, <a href="/search/physics?searchtype=author&query=Aruta%2C+C">C. Aruta</a>, <a href="/search/physics?searchtype=author&query=Asghar%2C+I">I. Asghar</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+C">C. Avila</a>, <a href="/search/physics?searchtype=author&query=Babbar%2C+J">J. Babbar</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Band%2C+R">R. Band</a>, <a href="/search/physics?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Beyrouthy%2C+T">T. Beyrouthy</a>, <a href="/search/physics?searchtype=author&query=Bhatnagar%2C+V">V. Bhatnagar</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+M">M. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Black%2C+K">K. Black</a>, <a href="/search/physics?searchtype=author&query=Borgonovi%2C+L">L. Borgonovi</a> , et al. (157 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="2203.12037v1-abstract-short" style="display: inline;"> The series of upgrades to the Large Hadron Collider, culminating in the High Luminosity Large Hadron Collider, will enable a significant expansion of the physics program of the CMS experiment. However, the accelerator upgrades will also make the experimental conditions more challenging, with implications for detector operations, triggering, and data analysis. The luminosity of the proton-proton co… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.12037v1-abstract-full').style.display = 'inline'; document.getElementById('2203.12037v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2203.12037v1-abstract-full" style="display: none;"> The series of upgrades to the Large Hadron Collider, culminating in the High Luminosity Large Hadron Collider, will enable a significant expansion of the physics program of the CMS experiment. However, the accelerator upgrades will also make the experimental conditions more challenging, with implications for detector operations, triggering, and data analysis. The luminosity of the proton-proton collisions is expected to exceed $2-3\times10^{34}$~cm$^{-2}$s$^{-1}$ for Run 3 (starting in 2022), and it will be at least $5\times10^{34}$~cm$^{-2}$s$^{-1}$ when the High Luminosity Large Hadron Collider is completed for Run 4. These conditions will affect muon triggering, identification, and measurement, which are critical capabilities of the experiment. To address these challenges, additional muon detectors are being installed in the CMS endcaps, based on Gas Electron Multiplier technology. For this purpose, 161 large triple-Gas Electron Multiplier detectors have been constructed and tested. Installation of these devices began in 2019 with the GE1/1 station and will be followed by two additional stations, GE2/1 and ME0, to be installed in 2023 and 2026, respectively. The assembly and quality control of the GE1/1 detectors were distributed across several production sites around the world. We motivate and discuss the quality control procedures that were developed to standardize the performance of the detectors, and we present the final results of the production. Out of 161 detectors produced, 156 detectors passed all tests, and 144 detectors are now installed in the CMS experiment. The various visual inspections, gas tightness tests, intrinsic noise rate characterizations, and effective gas gain and response uniformity tests allowed the project to achieve this high success rate. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2203.12037v1-abstract-full').style.display = 'none'; document.getElementById('2203.12037v1-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 March, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">45 pages, 39 figures, submitted to Nuclear Instruments and Methods in Physics Research Section A</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2202.05480">arXiv:2202.05480</a> <span> [<a href="https://arxiv.org/pdf/2202.05480">pdf</a>, <a href="https://arxiv.org/format/2202.05480">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/10.3390/instruments6010006">10.3390/instruments6010006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The CYGNO Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amaro%2C+F+D">Fernando Domingues Amaro</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">Elisabetta Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">Luigi Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">Stefano Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">Cesidio Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">Michele Caponero</a>, <a href="/search/physics?searchtype=author&query=Cardoso%2C+D+S">Danilo Santos Cardoso</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">Gianluca Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">Andr茅 Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">Igor Abritta Costa</a>, <a href="/search/physics?searchtype=author&query=Roque%2C+R+J+d+C">Rita Joanna da Cruz Roque</a>, <a href="/search/physics?searchtype=author&query=Dan%C3%A9%2C+E">Emiliano Dan茅</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">Giorgio Dho</a>, <a href="/search/physics?searchtype=author&query=Di+Giambattista%2C+F">Flaminia Di Giambattista</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">Emanuele Di Marco</a>, <a href="/search/physics?searchtype=author&query=di+Cortona%2C+G+G">Giovanni Grilli di Cortona</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">Giulia D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">Francesco Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=J%C3%BAnior%2C+H+P+L">Herman Pessoa Lima J煤nior</a>, <a href="/search/physics?searchtype=author&query=Lopes%2C+G+S+P">Guilherme Sebastiao Pinheiro Lopes</a>, <a href="/search/physics?searchtype=author&query=J%C3%BAnior%2C+A+d+S+L">Amaro da Silva Lopes J煤nior</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">Giovanni Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Mano%2C+R+D+P">Rui Daniel Passos Mano</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">Michela Marafini</a>, <a href="/search/physics?searchtype=author&query=Gregorio%2C+R+R+M">Robert Renz Marcelo Gregorio</a> , et al. (25 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="2202.05480v1-abstract-short" style="display: inline;"> The search for a novel technology able to detect and reconstruct nuclear and electron recoil events with the energy of a few keV has become more and more important now that large regions of high-mass dark matter (DM) candidates have been excluded. Moreover, a detector sensitive to incoming particle direction will be crucial in the case of DM discovery to open the possibility of studying its proper… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.05480v1-abstract-full').style.display = 'inline'; document.getElementById('2202.05480v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2202.05480v1-abstract-full" style="display: none;"> The search for a novel technology able to detect and reconstruct nuclear and electron recoil events with the energy of a few keV has become more and more important now that large regions of high-mass dark matter (DM) candidates have been excluded. Moreover, a detector sensitive to incoming particle direction will be crucial in the case of DM discovery to open the possibility of studying its properties. Gaseous time projection chambers (TPC) with optical readout are very promising detectors combining the detailed event information provided by the TPC technique with the high sensitivity and granularity of latest-generation scientific light sensors. The CYGNO experiment (a CYGNus module with Optical readout) aims to exploit the optical readout approach of multiple-GEM structures in large volume TPCs for the study of rare events as interactions of low-mass DM or solar neutrinos. The combined use of high-granularity sCMOS cameras and fast light sensors allows the reconstruction of the 3D direction of the tracks, offering good energy resolution and very high sensitivity in the few keV energy range, together with a very good particle identification useful for distinguishing nuclear recoils from electronic recoils. This experiment is part of the CYGNUS proto-collaboration, which aims at constructing a network of underground observatories for directional DM search. A one cubic meter demonstrator is expected to be built in 2022/23 aiming at a larger scale apparatus (30 m$^3$--100 m$^3$) at a later stage. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2202.05480v1-abstract-full').style.display = 'none'; document.getElementById('2202.05480v1-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> 11 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> published on Instruments 2022, 6(1), 6 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2109.14331">arXiv:2109.14331</a> <span> [<a href="https://arxiv.org/pdf/2109.14331">pdf</a>, <a href="https://arxiv.org/format/2109.14331">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/10.1088/1748-0221/17/01/C01011">10.1088/1748-0221/17/01/C01011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Upgrade of the CMS Resistive Plate Chambers for the High Luminosity LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Samalan%2C+A">A. Samalan</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Alves%2C+G+A">G. A. Alves</a>, <a href="/search/physics?searchtype=author&query=Marujo%2C+F">F. Marujo</a>, <a href="/search/physics?searchtype=author&query=De+Araujo%2C+F+T+D+S">F. Torres Da Silva De Araujo</a>, <a href="/search/physics?searchtype=author&query=DaCosta%2C+E+M">E. M. DaCosta</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=Nogima%2C+H">H. Nogima</a>, <a href="/search/physics?searchtype=author&query=Santoro%2C+A">A. Santoro</a>, <a href="/search/physics?searchtype=author&query=De+Souza%2C+S+F">S. Fonseca De Souza</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Soultanov%2C+G">G. Soultanov</a>, <a href="/search/physics?searchtype=author&query=Bonchev%2C+M">M. Bonchev</a>, <a href="/search/physics?searchtype=author&query=Dimitrov%2C+A">A. Dimitrov</a>, <a href="/search/physics?searchtype=author&query=Litov%2C+L">L. Litov</a>, <a href="/search/physics?searchtype=author&query=Pavlov%2C+B">B. Pavlov</a>, <a href="/search/physics?searchtype=author&query=Petkov%2C+P">P. Petkov</a>, <a href="/search/physics?searchtype=author&query=Petrov%2C+A">A. Petrov</a>, <a href="/search/physics?searchtype=author&query=Qian%2C+S+J">S. J. Qian</a>, <a href="/search/physics?searchtype=author&query=Bernal%2C+C">C. Bernal</a>, <a href="/search/physics?searchtype=author&query=Cabrera%2C+A">A. Cabrera</a> , et al. (86 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="2109.14331v2-abstract-short" style="display: inline;"> During the upcoming High Luminosity phase of the Large Hadron Collider (HL-LHC), the integrated luminosity of the accelerator will increase to 3000 fb$^{-1}$. The expected experimental conditions in that period in terms of background rates, event pileup, and the probable aging of the current detectors present a challenge for all the existing experiments at the LHC, including the Compact Muon Solen… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.14331v2-abstract-full').style.display = 'inline'; document.getElementById('2109.14331v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2109.14331v2-abstract-full" style="display: none;"> During the upcoming High Luminosity phase of the Large Hadron Collider (HL-LHC), the integrated luminosity of the accelerator will increase to 3000 fb$^{-1}$. The expected experimental conditions in that period in terms of background rates, event pileup, and the probable aging of the current detectors present a challenge for all the existing experiments at the LHC, including the Compact Muon Solenoid (CMS) experiment. To ensure a highly performing muon system for this period, several upgrades of the Resistive Plate Chamber (RPC) system of the CMS are currently being implemented. These include the replacement of the readout system for the present system, and the installation of two new RPC stations with improved chamber and front-end electronics designs. The current overall status of this CMS RPC upgrade project is presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2109.14331v2-abstract-full').style.display = 'none'; document.getElementById('2109.14331v2-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">v1</span> submitted 29 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2021. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2107.09364">arXiv:2107.09364</a> <span> [<a href="https://arxiv.org/pdf/2107.09364">pdf</a>, <a href="https://arxiv.org/format/2107.09364">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/10.1088/1748-0221/16/11/P11014">10.1088/1748-0221/16/11/P11014 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of a Triple-GEM Demonstrator in $pp$ Collisions at the CMS Detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdalla%2C+H">H. Abdalla</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A">A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=AbuZeid%2C+S">S. AbuZeid</a>, <a href="/search/physics?searchtype=author&query=Agapitos%2C+A">A. Agapitos</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+A">A. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+A">A. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aim%C3%A8%2C+C">C. Aim猫</a>, <a href="/search/physics?searchtype=author&query=Aruta%2C+C">C. Aruta</a>, <a href="/search/physics?searchtype=author&query=Asghar%2C+I">I. Asghar</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+C">C. Avila</a>, <a href="/search/physics?searchtype=author&query=Babbar%2C+J">J. Babbar</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Band%2C+R">R. Band</a>, <a href="/search/physics?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bhatnagar%2C+V">V. Bhatnagar</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+M">M. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Black%2C+K">K. Black</a>, <a href="/search/physics?searchtype=author&query=Borgonovi%2C+L">L. Borgonovi</a>, <a href="/search/physics?searchtype=author&query=Bouhali%2C+O">O. Bouhali</a> , et al. (156 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="2107.09364v2-abstract-short" style="display: inline;"> After the Phase-2 high-luminosity upgrade to the Large Hadron Collider (LHC), the collision rate and therefore the background rate will significantly increase, particularly in the high $畏$ region. To improve both the tracking and triggering of muons, the Compact Muon Solenoid (CMS) Collaboration plans to install triple-layer Gas Electron Multiplier (GEM) detectors in the CMS muon endcaps. Demonstr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.09364v2-abstract-full').style.display = 'inline'; document.getElementById('2107.09364v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.09364v2-abstract-full" style="display: none;"> After the Phase-2 high-luminosity upgrade to the Large Hadron Collider (LHC), the collision rate and therefore the background rate will significantly increase, particularly in the high $畏$ region. To improve both the tracking and triggering of muons, the Compact Muon Solenoid (CMS) Collaboration plans to install triple-layer Gas Electron Multiplier (GEM) detectors in the CMS muon endcaps. Demonstrator GEM detectors were installed in CMS during 2017 to gain operational experience and perform a preliminary investigation of detector performance. We present the results of triple-GEM detector performance studies performed in situ during normal CMS and LHC operations in 2018. The distribution of cluster size and the efficiency to reconstruct high $p_T$ muons in proton--proton collisions are presented as well as the measurement of the environmental background rate to produce hits in the GEM detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.09364v2-abstract-full').style.display = 'none'; document.getElementById('2107.09364v2-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 September, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 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">10 pages, 5 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/2107.03621">arXiv:2107.03621</a> <span> [<a href="https://arxiv.org/pdf/2107.03621">pdf</a>, <a href="https://arxiv.org/format/2107.03621">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/10.1088/1748-0221/16/12/P12026">10.1088/1748-0221/16/12/P12026 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Modeling the triple-GEM detector response to background particles for the CMS Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdalla%2C+H">H. Abdalla</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A">A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=AbuZeid%2C+S">S. AbuZeid</a>, <a href="/search/physics?searchtype=author&query=Agapitos%2C+A">A. Agapitos</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+A">A. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+A">A. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aim%C3%A8%2C+C">C. Aim猫</a>, <a href="/search/physics?searchtype=author&query=Aruta%2C+C">C. Aruta</a>, <a href="/search/physics?searchtype=author&query=Asghar%2C+I">I. Asghar</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+C">C. Avila</a>, <a href="/search/physics?searchtype=author&query=Azhgirey%2C+I">I. Azhgirey</a>, <a href="/search/physics?searchtype=author&query=Babbar%2C+J">J. Babbar</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Band%2C+R">R. Band</a>, <a href="/search/physics?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bhatnagar%2C+V">V. Bhatnagar</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+M">M. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Black%2C+K">K. Black</a>, <a href="/search/physics?searchtype=author&query=Borgonovi%2C+L">L. Borgonovi</a> , et al. (164 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="2107.03621v1-abstract-short" style="display: inline;"> An estimate of environmental background hit rate on triple-GEM chambers is performed using Monte Carlo (MC) simulation and compared to data taken by test chambers installed in the CMS experiment (GE1/1) during Run-2 at the Large Hadron Collider (LHC). The hit rate is measured using data collected with proton-proton collisions at 13 TeV and a luminosity of 1.5$\times10^{34}$ cm$^{-2}$ s$^{-1}$. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.03621v1-abstract-full').style.display = 'inline'; document.getElementById('2107.03621v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2107.03621v1-abstract-full" style="display: none;"> An estimate of environmental background hit rate on triple-GEM chambers is performed using Monte Carlo (MC) simulation and compared to data taken by test chambers installed in the CMS experiment (GE1/1) during Run-2 at the Large Hadron Collider (LHC). The hit rate is measured using data collected with proton-proton collisions at 13 TeV and a luminosity of 1.5$\times10^{34}$ cm$^{-2}$ s$^{-1}$. The simulation framework uses a combination of the FLUKA and Geant4 packages to obtain the hit rate. FLUKA provides the radiation environment around the GE1/1 chambers, which is comprised of the particle flux with momentum direction and energy spectra ranging from $10^{-11}$ to $10^{4}$ MeV for neutrons, $10^{-3}$ to $10^{4}$ MeV for $纬$'s, $10^{-2}$ to $10^{4}$ MeV for $e^{\pm}$, and $10^{-1}$ to $10^{4}$ MeV for charged hadrons. Geant4 provides an estimate of detector response (sensitivity) based on an accurate description of detector geometry, material composition and interaction of particles with the various detector layers. The MC simulated hit rate is estimated as a function of the perpendicular distance from the beam line and agrees with data within the assigned uncertainties of 10-14.5%. This simulation framework can be used to obtain a reliable estimate of background rates expected at the High Luminosity LHC. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2107.03621v1-abstract-full').style.display = 'none'; document.getElementById('2107.03621v1-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 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">16 pages, 9 figures, 6 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/2009.09505">arXiv:2009.09505</a> <span> [<a href="https://arxiv.org/pdf/2009.09505">pdf</a>, <a href="https://arxiv.org/format/2009.09505">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/10.1088/1748-0221/15/12/P12019">10.1088/1748-0221/15/12/P12019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Interstrip Capacitances of the Readout Board used in Large Triple-GEM Detectors for the CMS Muon Upgrade </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdalla%2C+H">H. Abdalla</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A">A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=AbuZeid%2C+S">S. AbuZeid</a>, <a href="/search/physics?searchtype=author&query=Agapitos%2C+A">A. Agapitos</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+A">A. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+A">A. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aim%C3%A8%2C+C">C. Aim猫</a>, <a href="/search/physics?searchtype=author&query=Aruta%2C+C">C. Aruta</a>, <a href="/search/physics?searchtype=author&query=Asghar%2C+I">I. Asghar</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+C">C. Avila</a>, <a href="/search/physics?searchtype=author&query=Babbar%2C+J">J. Babbar</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Band%2C+R">R. Band</a>, <a href="/search/physics?searchtype=author&query=Bansal%2C+S">S. Bansal</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bhatnagar%2C+V">V. Bhatnagar</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+M">M. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Black%2C+K">K. Black</a>, <a href="/search/physics?searchtype=author&query=Borgonovi%2C+L">L. Borgonovi</a>, <a href="/search/physics?searchtype=author&query=Bouhali%2C+O">O. Bouhali</a> , et al. (156 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="2009.09505v1-abstract-short" style="display: inline;"> We present analytical calculations, Finite Element Analysis modeling, and physical measurements of the interstrip capacitances for different potential strip geometries and dimensions of the readout boards for the GE2/1 triple-Gas Electron Multiplier detector in the CMS muon system upgrade. The main goal of the study is to find configurations that minimize the interstrip capacitances and consequent… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.09505v1-abstract-full').style.display = 'inline'; document.getElementById('2009.09505v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.09505v1-abstract-full" style="display: none;"> We present analytical calculations, Finite Element Analysis modeling, and physical measurements of the interstrip capacitances for different potential strip geometries and dimensions of the readout boards for the GE2/1 triple-Gas Electron Multiplier detector in the CMS muon system upgrade. The main goal of the study is to find configurations that minimize the interstrip capacitances and consequently maximize the signal-to-noise ratio for the detector. We find agreement at the 1.5--4.8% level between the two methods of calculations and on the average at the 17% level between calculations and measurements. A configuration with halved strip lengths and doubled strip widths results in a measured 27--29% reduction over the original configuration while leaving the total number of strips unchanged. We have now adopted this design modification for all eight module types of the GE2/1 detector and will produce the final detector with this new strip design. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.09505v1-abstract-full').style.display = 'none'; document.getElementById('2009.09505v1-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 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 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">22 pages, 14 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2020 JINST 15 P12019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.12627">arXiv:2007.12627</a> <span> [<a href="https://arxiv.org/pdf/2007.12627">pdf</a>, <a href="https://arxiv.org/format/2007.12627">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/10.1088/1748-0221/15/07/C07036">10.1088/1748-0221/15/07/C07036 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> CYGNO: a gaseous TPC with optical readout for dark matter directional search </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">A. Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Nobrega%2C+R+A">R. A. Nobrega</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">A. Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</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="2007.12627v1-abstract-short" style="display: inline;"> The CYGNO project has the goal to use a gaseous TPC with optical readout to detect dark matter and solar neutrinos with low energy threshold and directionality. The CYGNO demonstrator will consist of 1 m 3 volume filled with He:CF 4 gas mixture at atmospheric pressure. Optical readout with high granularity CMOS sensors, combined with fast light detectors, will provide a detailed reconstruction of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.12627v1-abstract-full').style.display = 'inline'; document.getElementById('2007.12627v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.12627v1-abstract-full" style="display: none;"> The CYGNO project has the goal to use a gaseous TPC with optical readout to detect dark matter and solar neutrinos with low energy threshold and directionality. The CYGNO demonstrator will consist of 1 m 3 volume filled with He:CF 4 gas mixture at atmospheric pressure. Optical readout with high granularity CMOS sensors, combined with fast light detectors, will provide a detailed reconstruction of the event topology. This will allow to discriminate the nuclear recoil signal from the background, mainly represented by low energy electron recoils induced by radioactivity. Thanks to the high reconstruction efficiency, CYGNO will be sensitive to low mass dark matter, and will have the potential to overcome the neutrino floor, that ultimately limits non-directional dark matter searches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.12627v1-abstract-full').style.display = 'none'; document.getElementById('2007.12627v1-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 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Journal of Instrumentation, Volume 15, July 2020 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.12508">arXiv:2007.12508</a> <span> [<a href="https://arxiv.org/pdf/2007.12508">pdf</a>, <a href="https://arxiv.org/format/2007.12508">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/10.1088/1361-6501/abbd12">10.1088/1361-6501/abbd12 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Identification of low energy nuclear recoils in a gas TPC with optical readout </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">Elisabetta Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">Luigi Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">Stefano Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">Cesidio Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M+A">Michele Arturo Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">Gianluca Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">Andre Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">Igor Abritta Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">Emanuele Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">Giulia D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">Giorgio Dho</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">Fabrizio Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">Giovanni Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">Michela Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">Giovanni Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">Andrea Messina</a>, <a href="/search/physics?searchtype=author&query=Nobrega%2C+R+A">Rafael Antunes Nobrega</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">Aldo Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">Emiliano Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">Luciano Passamonti</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">Fabrizio Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">Davide Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">Daniele Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">Davide Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">Francesco Renga</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="2007.12508v2-abstract-short" style="display: inline;"> The search for a novel technology able to detect and reconstruct nuclear recoil events in the keV energy range has become more and more important as long as vast regions of high mass WIMP-like Dark Matter candidate have been excluded. Gaseous Time Projection Chambers (TPC) with optical readout are very promising candidate combining the complete event information provided by the TPC technique to th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.12508v2-abstract-full').style.display = 'inline'; document.getElementById('2007.12508v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.12508v2-abstract-full" style="display: none;"> The search for a novel technology able to detect and reconstruct nuclear recoil events in the keV energy range has become more and more important as long as vast regions of high mass WIMP-like Dark Matter candidate have been excluded. Gaseous Time Projection Chambers (TPC) with optical readout are very promising candidate combining the complete event information provided by the TPC technique to the high sensitivity and granularity of last generation scientific light sensors. A TPC with an amplification at the anode obtained with Gas Electron Multipliers (GEM) was tested at the Laboratori Nazionali di Frascati. Photons and neutrons from radioactive sources were employed to induce recoiling nuclei and electrons with kinetic energy in the range [1-100] keV. A He-CF4 (60/40) gas mixture was used at atmospheric pressure and the light produced during the multiplication in the GEM channels was acquired by a high position resolution and low noise scientific CMOS camera and a photomultiplier. A multi-stage pattern recognition algorithm based on an advanced clustering technique is presented here. A number of cluster shape observables are used to identify nuclear recoils induced by neutrons originated from a AmBe source against X-ray 55Fe photo-electrons. An efficiency of 18% to detect nuclear recoils with an energy of about 6 keV is reached obtaining at the same time a 96% 55Fe photo-electrons suppression. This makes this optically readout gas TPC a very promising candidate for future investigations of ultra-rare events as directional direct Dark Matter searches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.12508v2-abstract-full').style.display = 'none'; document.getElementById('2007.12508v2-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 October, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LEMON-20-001 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Meas. Sci. and Tech. 2020 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.01763">arXiv:2007.01763</a> <span> [<a href="https://arxiv.org/pdf/2007.01763">pdf</a>, <a href="https://arxiv.org/format/2007.01763">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/10.1088/1748-0221/15/12/T12003">10.1088/1748-0221/15/12/T12003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A density-based clustering algorithm for the CYGNO data analysis </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">A. Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Nobrega%2C+R+A">R. A. Nobrega</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">A. Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</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="2007.01763v3-abstract-short" style="display: inline;"> Time Projection Chambers (TPCs) working in combination with Gas Electron Multipliers (GEMs) produce a very sensitive detector capable of observing low energy events. This is achieved by capturing photons generated during the GEM electron multiplication process by means of a high-resolution camera. The CYGNO experiment has recently developed a TPC Triple GEM detector coupled to a low noise and high… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.01763v3-abstract-full').style.display = 'inline'; document.getElementById('2007.01763v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.01763v3-abstract-full" style="display: none;"> Time Projection Chambers (TPCs) working in combination with Gas Electron Multipliers (GEMs) produce a very sensitive detector capable of observing low energy events. This is achieved by capturing photons generated during the GEM electron multiplication process by means of a high-resolution camera. The CYGNO experiment has recently developed a TPC Triple GEM detector coupled to a low noise and high spatial resolution CMOS sensor. For the image analysis, an algorithm based on an adapted version of the well-known DBSCAN was implemented, called iDBSCAN. In this paper a description of the iDBSCAN algorithm is given, including test and validation of its parameters, and a comparison with DBSCAN itself and a widely used algorithm known as Nearest Neighbor Clustering (NNC). The results show that the adapted version of DBSCAN is capable of providing full signal detection efficiency and very good energy resolution while improving the detector background rejection. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.01763v3-abstract-full').style.display = 'none'; document.getElementById('2007.01763v3-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 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 (2020) no.12, T12003 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.00608">arXiv:2007.00608</a> <span> [<a href="https://arxiv.org/pdf/2007.00608">pdf</a>, <a href="https://arxiv.org/format/2007.00608">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/10.1088/1748-0221/15/10/P10001">10.1088/1748-0221/15/10/P10001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Stability and detection performance of a GEM-based Optical Readout TPC with He/CF$_4$ gas mixtures </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">A. Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Nobrega%2C+R+A">R. A. Nobrega</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">A. Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</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="2007.00608v3-abstract-short" style="display: inline;"> The performance and long term stability of an optically readout Time Projection Chamber with an electron amplification structure based on three Gas Electron Multipliers was studied. He/CF$_4$ based gas mixtures were used in two different proportions (60/40 and 70/30) in a CYGNO prototype with 7 litres sensitive volume. With electrical configurations providing very similar electron gains, an almost… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.00608v3-abstract-full').style.display = 'inline'; document.getElementById('2007.00608v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.00608v3-abstract-full" style="display: none;"> The performance and long term stability of an optically readout Time Projection Chamber with an electron amplification structure based on three Gas Electron Multipliers was studied. He/CF$_4$ based gas mixtures were used in two different proportions (60/40 and 70/30) in a CYGNO prototype with 7 litres sensitive volume. With electrical configurations providing very similar electron gains, an almost full detection efficiency in the whole detector volume was found with both mixtures, while a light yield about 20\% larger for the 60/40 was found. The electrostatic stability was tested by monitoring voltages and currents during 25 days. The detector worked in very stable and safe condition for the whole period. In the presence of less CF$_4$, a larger probability of unstable events was clearly detected. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.00608v3-abstract-full').style.display = 'none'; document.getElementById('2007.00608v3-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> 17 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15 (2020) no.10, P10001 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.12769">arXiv:2005.12769</a> <span> [<a href="https://arxiv.org/pdf/2005.12769">pdf</a>, <a href="https://arxiv.org/format/2005.12769">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"> CMS RPC Background -- Studies and Measurements </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Samalan%2C+A">A. Samalan</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Zaganidis%2C+N">N. Zaganidis</a>, <a href="/search/physics?searchtype=author&query=Alves%2C+G+A">G. A. Alves</a>, <a href="/search/physics?searchtype=author&query=Marujo%2C+F">F. Marujo</a>, <a href="/search/physics?searchtype=author&query=De+Araujo%2C+F+T+D+S">F. Torres Da Silva De Araujo</a>, <a href="/search/physics?searchtype=author&query=Da+Costa%2C+E+M">E. M. Da Costa</a>, <a href="/search/physics?searchtype=author&query=Damiao%2C+D+D+J">D. De Jesus Damiao</a>, <a href="/search/physics?searchtype=author&query=Nogima%2C+H">H. Nogima</a>, <a href="/search/physics?searchtype=author&query=Santoro%2C+A">A. Santoro</a>, <a href="/search/physics?searchtype=author&query=De+Souza%2C+S+F">S. Fonseca De Souza</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Sultanov%2C+G">G. Sultanov</a>, <a href="/search/physics?searchtype=author&query=Bonchev%2C+M">M. Bonchev</a>, <a href="/search/physics?searchtype=author&query=Dimitrov%2C+A">A. Dimitrov</a>, <a href="/search/physics?searchtype=author&query=Litov%2C+L">L. Litov</a>, <a href="/search/physics?searchtype=author&query=Pavlov%2C+B">B. Pavlov</a>, <a href="/search/physics?searchtype=author&query=Petkov%2C+P">P. Petkov</a>, <a href="/search/physics?searchtype=author&query=Petrov%2C+A">A. Petrov</a>, <a href="/search/physics?searchtype=author&query=Qian%2C+S+J">S. J. Qian</a>, <a href="/search/physics?searchtype=author&query=Bernal%2C+C">C. Bernal</a> , et al. (84 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="2005.12769v2-abstract-short" style="display: inline;"> The expected radiation background in the CMS RPC system has been studied using the MC prediction with the CMS FLUKA simulation of the detector and the cavern. The MC geometry used in the analysis describes very accurately the present RPC system but still does not include the complete description of the RPC upgrade region with pseudorapidity $1.9 < \lvert 畏\rvert < 2.4$. Present results will be upd… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.12769v2-abstract-full').style.display = 'inline'; document.getElementById('2005.12769v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.12769v2-abstract-full" style="display: none;"> The expected radiation background in the CMS RPC system has been studied using the MC prediction with the CMS FLUKA simulation of the detector and the cavern. The MC geometry used in the analysis describes very accurately the present RPC system but still does not include the complete description of the RPC upgrade region with pseudorapidity $1.9 < \lvert 畏\rvert < 2.4$. Present results will be updated with the final geometry description, once it is available. The radiation background has been studied in terms of expected particle rates, absorbed dose and fluence. Two High Luminosity LHC (HL-LHC) scenarios have been investigated - after collecting $3000$ and $4000$ fb$^{-1}$. Estimations with safety factor of 3 have been considered, as well. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.12769v2-abstract-full').style.display = 'none'; document.getElementById('2005.12769v2-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> 13 December, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">6 pages, Conference proceeding for the 2020 Resistive Plate Chambers and Related Detectors. Minor revision of the report, the results remain unchanged. Three new plots are added and some details were explained better</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2005.12272">arXiv:2005.12272</a> <span> [<a href="https://arxiv.org/pdf/2005.12272">pdf</a>, <a href="https://arxiv.org/format/2005.12272">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="Applied Physics">physics.app-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.2021.165209">10.1016/j.nima.2021.165209 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of an optically read out time projection chamber with ultra-relativistic electrons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Antochi%2C+V+C">V. C. Antochi</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">A. Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=N%27obrega%2C+R+A">R. A. N'obrega</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">A. Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</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="2005.12272v3-abstract-short" style="display: inline;"> The Time Projection Chamber (TPC) is an ideal candidate to finely study the charged particle ionization in a gaseous medium. Large volumes TPCs can be read out with a suitable number of channels offering a complete 3D reconstruction of an ultra-relativistic charged particle track, that is the sequence of its energy releases in the TPC gas volume. Moreover, He-based TPCs are very promising to study… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.12272v3-abstract-full').style.display = 'inline'; document.getElementById('2005.12272v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2005.12272v3-abstract-full" style="display: none;"> The Time Projection Chamber (TPC) is an ideal candidate to finely study the charged particle ionization in a gaseous medium. Large volumes TPCs can be read out with a suitable number of channels offering a complete 3D reconstruction of an ultra-relativistic charged particle track, that is the sequence of its energy releases in the TPC gas volume. Moreover, He-based TPCs are very promising to study keV energy particles as nuclear recoils, opening the possibility for directional searches of Dark Matter (DM) and the study of Solar Neutrinos (SN). In this paper, we report the analysis of the data acquired with a small TPC prototype (named LEMOn) built by the CYGNO collaboration that was exposed to a beam of 450 MeV electrons at the Beam Test Facility of National Laboratories of Frascati. LEMOn is operated with a He-CF4 mixture at atmospheric pressure and is based on a Gas Electron Multipliers amplification stage that produces visible light collected by a sub-millimeter position resolution scientific CMOS camera. This type of readout - in conjunction with a fast light detection - allows a 3D reconstruction of the electrons' tracks. The electrons are leaving a trail of segments of ionizations corresponding to a few keV energy releases each. Their study leads to predict a keV energy threshold and 1-10 mm longitudinal and 0.1-0.3 mm transverse position resolution for nuclear recoils, very promising for the application of optically readout TPC to DM searches and SN measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2005.12272v3-abstract-full').style.display = 'none'; document.getElementById('2005.12272v3-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> 10 March, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN-20-06/LNF </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2021 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2004.10493">arXiv:2004.10493</a> <span> [<a href="https://arxiv.org/pdf/2004.10493">pdf</a>, <a href="https://arxiv.org/format/2004.10493">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/10.1088/1748-0221/15/08/P08018">10.1088/1748-0221/15/08/P08018 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First evidence of luminescence in a He/CF$_4$ gas mixture induced by non-ionizing electrons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Cortez%2C+A">A. Cortez</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Dho%2C+G">G. Dho</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">A. Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</a>, <a href="/search/physics?searchtype=author&query=Rosatelli%2C+F">F. Rosatelli</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="2004.10493v3-abstract-short" style="display: inline;"> Optical readout of Gas Electron Multipliers (GEM) provides very interesting performances and has been proposed for different applications in particle physics. In particular, thanks to its good efficiency in the keV energy range, it is being developed for low-energy and rare event studies, such as Dark Matter search. So far, the optical approach exploits the light produced during the avalanche proc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.10493v3-abstract-full').style.display = 'inline'; document.getElementById('2004.10493v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2004.10493v3-abstract-full" style="display: none;"> Optical readout of Gas Electron Multipliers (GEM) provides very interesting performances and has been proposed for different applications in particle physics. In particular, thanks to its good efficiency in the keV energy range, it is being developed for low-energy and rare event studies, such as Dark Matter search. So far, the optical approach exploits the light produced during the avalanche processes in GEM channels. Further luminescence in the gas can be induced by electrons accelerated by a suitable electric field. The CYGNO collaboration studied this process with a combined use of a triple-GEM structure and a grid in an He/CF$_4$ (60/40) gas mixture at atmospheric pressure. Results reported in this paper allow to conclude that with an electric field of about 11~kV/cm a photon production mean free path of about 1.0~cm was found. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2004.10493v3-abstract-full').style.display = 'none'; document.getElementById('2004.10493v3-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, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 April, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 15, no.08, P08018 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2001.02453">arXiv:2001.02453</a> <span> [<a href="https://arxiv.org/pdf/2001.02453">pdf</a>, <a href="https://arxiv.org/format/2001.02453">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/10.1109/NSS/MIC42101.2019.9059678">10.1109/NSS/MIC42101.2019.9059678 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A 1 m$^3$ Gas Time Projection Chamber with Optical Readout for Directional Dark Matter Searches: the CYGNO Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Bedogni%2C+R">R. Bedogni</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+F">F. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Capoccia%2C+C">C. Capoccia</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. A. Costa</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Iacoangeli%2C+F">F. Iacoangeli</a>, <a href="/search/physics?searchtype=author&query=Maccarone%2C+G">G. Maccarone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Orlandi%2C+A">A. Orlandi</a>, <a href="/search/physics?searchtype=author&query=Paoletti%2C+E">E. Paoletti</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Pelosi%2C+A">A. Pelosi</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</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="2001.02453v1-abstract-short" style="display: inline;"> The aim of the CYGNO project is the construction and operation of a 1~m$^3$ gas TPC for directional dark matter searches and coherent neutrino scattering measurements, as a prototype toward the 100-1000~m$^3$ (0.15-1.5 tons) CYGNUS network of underground experiments. In such a TPC, electrons produced by dark-matter- or neutrino-induced nuclear recoils will drift toward and will be multiplied by a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.02453v1-abstract-full').style.display = 'inline'; document.getElementById('2001.02453v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2001.02453v1-abstract-full" style="display: none;"> The aim of the CYGNO project is the construction and operation of a 1~m$^3$ gas TPC for directional dark matter searches and coherent neutrino scattering measurements, as a prototype toward the 100-1000~m$^3$ (0.15-1.5 tons) CYGNUS network of underground experiments. In such a TPC, electrons produced by dark-matter- or neutrino-induced nuclear recoils will drift toward and will be multiplied by a three-layer GEM structure, and the light produced in the avalanche processes will be readout by a sCMOS camera, providing a 2D image of the event with a resolution of a few hundred micrometers. Photomultipliers will also provide a simultaneous fast readout of the time profile of the light production, giving information about the third coordinate and hence allowing a 3D reconstruction of the event, from which the direction of the nuclear recoil and consequently the direction of the incoming particle can be inferred. Such a detailed reconstruction of the event topology will also allow a pure and efficient signal to background discrimination. These two features are the key to reach and overcome the solar neutrino background that will ultimately limit non-directional dark matter searches. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2001.02453v1-abstract-full').style.display = 'none'; document.getElementById('2001.02453v1-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 January, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">5 page, 7 figures, contribution to the Conference Records of 2018 IEEE NSS/MIC</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.07277">arXiv:1910.07277</a> <span> [<a href="https://arxiv.org/pdf/1910.07277">pdf</a>, <a href="https://arxiv.org/format/1910.07277">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/10.1088/1742-6596/1498/1/012016">10.1088/1742-6596/1498/1/012016 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> CYGNO: Triple-GEM Optical Readout for Directional Dark Matter Search </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. Abritta Costa</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Bedogni%2C+R">R. Bedogni</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+F">F. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=D%27Imperio%2C+G">G. D'Imperio</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Tomassini%2C+S">S. Tomassini</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="1910.07277v2-abstract-short" style="display: inline;"> CYGNO is a project realising a cubic meter demonstrator to study the scalability of the performance of the optical approach for the readout of large-volume, GEM-equipped TPC. This is part of the CYGNUS proto-collaboration which aims at constructing a network of underground observatories for directional Dark Matter search. The combined use of high-granularity sCMOS and fast sensors for reading out… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.07277v2-abstract-full').style.display = 'inline'; document.getElementById('1910.07277v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.07277v2-abstract-full" style="display: none;"> CYGNO is a project realising a cubic meter demonstrator to study the scalability of the performance of the optical approach for the readout of large-volume, GEM-equipped TPC. This is part of the CYGNUS proto-collaboration which aims at constructing a network of underground observatories for directional Dark Matter search. The combined use of high-granularity sCMOS and fast sensors for reading out the light produced in GEM channels during the multiplication processes was shown to allow on one hand to reconstruct 3D direction of the tracks, offering accurate energy measurements and sensitivity to the source directionality and, on the other hand, a high particle identification capability very useful to distinguish nuclear recoils. Results of the performed R&D and future steps toward a 30-100 cubic meter experiment will be presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.07277v2-abstract-full').style.display = 'none'; document.getElementById('1910.07277v2-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 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 16 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 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">6th International Conference on Micro Pattern Gaseous Detectors, MPGD19</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1905.04066">arXiv:1905.04066</a> <span> [<a href="https://arxiv.org/pdf/1905.04066">pdf</a>, <a href="https://arxiv.org/format/1905.04066">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/10.1088/1748-0221/14/07/P07011">10.1088/1748-0221/14/07/P07011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of Optically Readout GEM-based TPC with a 55Fe source </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Costa%2C+I+A">I. Abritta Costa</a>, <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+F">F. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pinci%2C+D">D. Pinci</a>, <a href="/search/physics?searchtype=author&query=Renga%2C+F">F. Renga</a>, <a href="/search/physics?searchtype=author&query=Rosatelli%2C+F">F. Rosatelli</a>, <a href="/search/physics?searchtype=author&query=Tomassini%2C+S">S. Tomassini</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="1905.04066v4-abstract-short" style="display: inline;"> Optical readout of large Time Projection Chambers (TPCs) with multiple Gas Electron Multipliers (GEMs) amplification stages has shown to provide very interesting performances for high energy particle tracking. Proposed applications for low-energy and rare event studies, such as Dark Matter search, ask for demanding performance in the keV energy range. The performance of such a readout was studied… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.04066v4-abstract-full').style.display = 'inline'; document.getElementById('1905.04066v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1905.04066v4-abstract-full" style="display: none;"> Optical readout of large Time Projection Chambers (TPCs) with multiple Gas Electron Multipliers (GEMs) amplification stages has shown to provide very interesting performances for high energy particle tracking. Proposed applications for low-energy and rare event studies, such as Dark Matter search, ask for demanding performance in the keV energy range. The performance of such a readout was studied in details as a function of the electric field configuration and GEM gain by using a $^{55}$Fe source within a 7 litre sensitive volume detector developed as a part of the R\&D for the CYGNUS project. Results reported in this paper show that the low noise level of the sensor allows to operate with a 2~keV threshold while keeping a rate of fake-events lesser than 10 per year. In this configuration, a detection efficiency well above 95\% along with an energy resolution ($蟽$) of 18\% is obtained for the 5.9 keV photons, demonstrating the very promising capabilities of this technique. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1905.04066v4-abstract-full').style.display = 'none'; document.getElementById('1905.04066v4-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 June, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 May, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2019. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1901.04190">arXiv:1901.04190</a> <span> [<a href="https://arxiv.org/pdf/1901.04190">pdf</a>, <a href="https://arxiv.org/format/1901.04190">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"> CYGNO: a CYGNUs Collaboration 1 m^3 Module with Optical Readout for Directional Dark Matter Search </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baracchini%2C+E">E. Baracchini</a>, <a href="/search/physics?searchtype=author&query=Bedogni%2C+R">R. Bedogni</a>, <a href="/search/physics?searchtype=author&query=Bellini%2C+F">F. Bellini</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bignell%2C+L">L. Bignell</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Cavoto%2C+G">G. Cavoto</a>, <a href="/search/physics?searchtype=author&query=Di+Marco%2C+E">E. Di Marco</a>, <a href="/search/physics?searchtype=author&query=Eldridge%2C+C">C. Eldridge</a>, <a href="/search/physics?searchtype=author&query=Ezeribe%2C+A">A. Ezeribe</a>, <a href="/search/physics?searchtype=author&query=Gargana%2C+R">R. Gargana</a>, <a href="/search/physics?searchtype=author&query=Gamble%2C+T">T. Gamble</a>, <a href="/search/physics?searchtype=author&query=Gregorio%2C+R">R. Gregorio</a>, <a href="/search/physics?searchtype=author&query=Lane%2C+G">G. Lane</a>, <a href="/search/physics?searchtype=author&query=Loomba%2C+D">D. Loomba</a>, <a href="/search/physics?searchtype=author&query=Lynch%2C+W">W. Lynch</a>, <a href="/search/physics?searchtype=author&query=Maccarrone%2C+G">G. Maccarrone</a>, <a href="/search/physics?searchtype=author&query=Marafini%2C+M">M. Marafini</a>, <a href="/search/physics?searchtype=author&query=Mazzitelli%2C+G">G. Mazzitelli</a>, <a href="/search/physics?searchtype=author&query=Messina%2C+A">A. Messina</a>, <a href="/search/physics?searchtype=author&query=Mills%2C+A">A. Mills</a>, <a href="/search/physics?searchtype=author&query=Miuchi%2C+K">K. Miuchi</a>, <a href="/search/physics?searchtype=author&query=Petrucci%2C+F">F. Petrucci</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</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="1901.04190v2-abstract-short" style="display: inline;"> The design of the project named CYGNO is presented. CYGNO is a new proposal supported by INFN, the Italian National Institute for Nuclear Physics, within CYGNUs proto-collaboration (CYGNUS-TPC) that aims to realize a distributed observatory in underground laboratories for directional Dark Matter (DM) search and the identification of the coherent neutrino scattering (CNS) from the Sun. CYGNO is one… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.04190v2-abstract-full').style.display = 'inline'; document.getElementById('1901.04190v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1901.04190v2-abstract-full" style="display: none;"> The design of the project named CYGNO is presented. CYGNO is a new proposal supported by INFN, the Italian National Institute for Nuclear Physics, within CYGNUs proto-collaboration (CYGNUS-TPC) that aims to realize a distributed observatory in underground laboratories for directional Dark Matter (DM) search and the identification of the coherent neutrino scattering (CNS) from the Sun. CYGNO is one of the first prototypes in the road map to 100-1000 m^3 of CYGNUs and will be located at the National Laboratory of Gran Sasso (LNGS), in Italy, aiming to make significant advances in the technology of single phase gas-only time projection chambers (TPC) for the application to the detection of rare scattering events. In particular it will focus on a read-out technique based on Micro Pattern Gas Detector (MPGD) amplification of the ionization and on the visible light collection with a sub-mm position resolution sCMOS (scientific COMS) camera. This type of readout - in conjunction with a fast light detection - will allow on one hand to reconstruct 3D direction of the tracks, offering accurate sensitivity to the source directionality and, on the other hand, a high particle identification capability very useful to distinguish nuclear recoils. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1901.04190v2-abstract-full').style.display = 'none'; document.getElementById('1901.04190v2-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 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 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">Report number:</span> INFN-19/2/LNF </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Conference Record of 2018 IEEE NSS/MIC/RTSD </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.05680">arXiv:1807.05680</a> <span> [<a href="https://arxiv.org/pdf/1807.05680">pdf</a>, <a href="https://arxiv.org/format/1807.05680">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/10.1088/1748-0221/14/10/C10037">10.1088/1748-0221/14/10/C10037 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High Rate RPC detector for LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lagarde%2C+F">F. Lagarde</a>, <a href="/search/physics?searchtype=author&query=Fagot%2C+A">A. Fagot</a>, <a href="/search/physics?searchtype=author&query=Gul%2C+M">M. Gul</a>, <a href="/search/physics?searchtype=author&query=Roskas%2C+C">C. Roskas</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Zaganidis%2C+N">N. Zaganidis</a>, <a href="/search/physics?searchtype=author&query=De+Souza%2C+S+F">S. Fonseca De Souza</a>, <a href="/search/physics?searchtype=author&query=Santoro%2C+A">A. Santoro</a>, <a href="/search/physics?searchtype=author&query=De+Araujo%2C+F+T+D+S">F. Torres Da Silva De Araujo</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Sultanov%2C+G">G. Sultanov</a>, <a href="/search/physics?searchtype=author&query=Dimitrov%2C+A">A. Dimitrov</a>, <a href="/search/physics?searchtype=author&query=Litov%2C+L">L. Litov</a>, <a href="/search/physics?searchtype=author&query=Pavlov%2C+B">B. Pavlov</a>, <a href="/search/physics?searchtype=author&query=Petkov%2C+P">P. Petkov</a>, <a href="/search/physics?searchtype=author&query=Petrov%2C+A">A. Petrov</a>, <a href="/search/physics?searchtype=author&query=Qian%2C+S+J">S. J. Qian</a>, <a href="/search/physics?searchtype=author&query=Han%2C+D">D. Han</a>, <a href="/search/physics?searchtype=author&query=Yi%2C+W">W. Yi</a>, <a href="/search/physics?searchtype=author&query=Avila%2C+C">C. Avila</a>, <a href="/search/physics?searchtype=author&query=Cabrera%2C+A">A. Cabrera</a> , et al. (77 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="1807.05680v1-abstract-short" style="display: inline;"> The High Luminosity LHC (HL-LHC) phase is designed to increase by an order of magnitude the amount of data to be collected by the LHC experiments. The foreseen gradual increase of the instantaneous luminosity of up to more than twice its nominal value of $10\times10^{34}\ {\rm cm}^{-1}{\rm s}^{-2}$ during Phase I and Phase II of the LHC running, presents special challenges for the experiments. The… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.05680v1-abstract-full').style.display = 'inline'; document.getElementById('1807.05680v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.05680v1-abstract-full" style="display: none;"> The High Luminosity LHC (HL-LHC) phase is designed to increase by an order of magnitude the amount of data to be collected by the LHC experiments. The foreseen gradual increase of the instantaneous luminosity of up to more than twice its nominal value of $10\times10^{34}\ {\rm cm}^{-1}{\rm s}^{-2}$ during Phase I and Phase II of the LHC running, presents special challenges for the experiments. The region with high pseudo rapidity ($畏$) region of the forward muon spectrometer ($2.4 > |畏| > 1.9$) is not equipped with RPC stations. The increase of the expected particles rate up to 2 kHz cm$^{-1}$ ( including a safety factor 3 ) motivates the installation of RPC chambers to guarantee redundancy with the CSC chambers already present. The current CMS RPC technology cannot sustain the expected background level. A new generation of Glass-RPC (GRPC) using low-resistivity glass was proposed to equip the two most far away of the four high $畏$ muon stations of CMS. In their single-gap version they can stand rates of few kHz cm$^{-1}$. Their time precision of about 1 ns can allow to reduce the noise contribution leading to an improvement of the trigger rate. The proposed design for large size chambers is examined and some preliminary results obtained during beam tests at Gamma Irradiation Facility (GIF++) and Super Proton Synchrotron (SPS) at CERN are shown. They were performed to validate the capability of such detectors to support high irradiation environment with limited consequence on their efficiency. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.05680v1-abstract-full').style.display = 'none'; document.getElementById('1807.05680v1-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 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/1606.04291">arXiv:1606.04291</a> <span> [<a href="https://arxiv.org/pdf/1606.04291">pdf</a>, <a href="https://arxiv.org/format/1606.04291">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/10.1088/1748-0221/11/09/C09017">10.1088/1748-0221/11/09/C09017 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> R&D towards the CMS RPC Phase-2 upgrade </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Fagot%2C+A">A. Fagot</a>, <a href="/search/physics?searchtype=author&query=Cimmino%2C+A">A. Cimmino</a>, <a href="/search/physics?searchtype=author&query=Crucy%2C+S">S. Crucy</a>, <a href="/search/physics?searchtype=author&query=Gul%2C+M">M. Gul</a>, <a href="/search/physics?searchtype=author&query=Rios%2C+A+A+O">A. A. O. Rios</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Zaganidis%2C+N">N. Zaganidis</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+S">S. Aly</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Radi%2C+A">A. Radi</a>, <a href="/search/physics?searchtype=author&query=Sayed%2C+A">A. Sayed</a>, <a href="/search/physics?searchtype=author&query=Singh%2C+G">G. Singh</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Iaselli%2C+G">G. Iaselli</a>, <a href="/search/physics?searchtype=author&query=Maggi%2C+M">M. Maggi</a>, <a href="/search/physics?searchtype=author&query=Pugliese%2C+G">G. Pugliese</a>, <a href="/search/physics?searchtype=author&query=Verwilligen%2C+P">P. Verwilligen</a>, <a href="/search/physics?searchtype=author&query=Van+Doninck%2C+W">W. Van Doninck</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+A">A. Sharma</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Primavera%2C+F">F. Primavera</a>, <a href="/search/physics?searchtype=author&query=Bhatnagar%2C+V">V. Bhatnagar</a> , et al. (71 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="1606.04291v1-abstract-short" style="display: inline;"> The high pseudo-rapidity region of the CMS muon system is covered by Cathode Strip Chambers (CSC) only and lacks redundant coverage despite the fact that it is a challenging region for muons in terms of backgrounds and momentum resolution. In order to maintain good efficiency for the muon trigger in this region additional RPCs are planned to be installed in the two outermost stations at low angle… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.04291v1-abstract-full').style.display = 'inline'; document.getElementById('1606.04291v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.04291v1-abstract-full" style="display: none;"> The high pseudo-rapidity region of the CMS muon system is covered by Cathode Strip Chambers (CSC) only and lacks redundant coverage despite the fact that it is a challenging region for muons in terms of backgrounds and momentum resolution. In order to maintain good efficiency for the muon trigger in this region additional RPCs are planned to be installed in the two outermost stations at low angle named RE3/1 and RE4/1. These stations will use RPCs with finer granularity and good timing resolution to mitigate background effects and to increase the redundancy of the system. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.04291v1-abstract-full').style.display = 'none'; document.getElementById('1606.04291v1-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, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2016. </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">13th Workshop on Resistive Plate Chambers and related detectors, 22-26 February 2016, Ghent University, Belgium</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.01398">arXiv:1606.01398</a> <span> [<a href="https://arxiv.org/pdf/1606.01398">pdf</a>, <a href="https://arxiv.org/format/1606.01398">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/10.1088/1748-0221/11/09/C09006">10.1088/1748-0221/11/09/C09006 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High rate, fast timing Glass RPC for the high 畏 CMS muon detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lagarde%2C+F">F. Lagarde</a>, <a href="/search/physics?searchtype=author&query=Gouzevitch%2C+M">M. Gouzevitch</a>, <a href="/search/physics?searchtype=author&query=Laktineh%2C+I">I. Laktineh</a>, <a href="/search/physics?searchtype=author&query=Buridon%2C+V">V. Buridon</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+X">X. Chen</a>, <a href="/search/physics?searchtype=author&query=Combaret%2C+C">C. Combaret</a>, <a href="/search/physics?searchtype=author&query=Eynard%2C+A">A. Eynard</a>, <a href="/search/physics?searchtype=author&query=Germani%2C+L">L. Germani</a>, <a href="/search/physics?searchtype=author&query=Grenier%2C+G">G. Grenier</a>, <a href="/search/physics?searchtype=author&query=Mathez%2C+H">H. Mathez</a>, <a href="/search/physics?searchtype=author&query=Mirabito%2C+L">L. Mirabito</a>, <a href="/search/physics?searchtype=author&query=Petrukhin%2C+A">A. Petrukhin</a>, <a href="/search/physics?searchtype=author&query=Steen%2C+A">A. Steen</a>, <a href="/search/physics?searchtype=author&query=Tromeuraa%2C+W">W. Tromeuraa</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+Y">Y. Wang</a>, <a href="/search/physics?searchtype=author&query=Gongab%2C+A">A. Gongab</a>, <a href="/search/physics?searchtype=author&query=Moreau%2C+N">N. Moreau</a>, <a href="/search/physics?searchtype=author&query=de+la+Taille%2C+C">C. de la Taille</a>, <a href="/search/physics?searchtype=author&query=Dulucqac%2C+F">F. Dulucqac</a>, <a href="/search/physics?searchtype=author&query=Cimmino%2C+A">A. Cimmino</a>, <a href="/search/physics?searchtype=author&query=Crucy%2C+S">S. Crucy</a>, <a href="/search/physics?searchtype=author&query=Fagot%2C+A">A. Fagot</a>, <a href="/search/physics?searchtype=author&query=Gul%2C+M">M. Gul</a>, <a href="/search/physics?searchtype=author&query=Rios%2C+A+A+O">A. A. O. Rios</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a> , et al. (86 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="1606.01398v2-abstract-short" style="display: inline;"> The HL-LHC phase is designed to increase by an order of magnitude the amount of data to be collected by the LHC experiments. To achieve this goal in a reasonable time scale the instantaneous luminosity would also increase by an order of magnitude up to $6.10^{34} cm^{-2} s^{-1}$ . The region of the forward muon spectrometer ($|畏| > 1.6$) is not equipped with RPC stations. The increase of the expec… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.01398v2-abstract-full').style.display = 'inline'; document.getElementById('1606.01398v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.01398v2-abstract-full" style="display: none;"> The HL-LHC phase is designed to increase by an order of magnitude the amount of data to be collected by the LHC experiments. To achieve this goal in a reasonable time scale the instantaneous luminosity would also increase by an order of magnitude up to $6.10^{34} cm^{-2} s^{-1}$ . The region of the forward muon spectrometer ($|畏| > 1.6$) is not equipped with RPC stations. The increase of the expected particles rate up to $2 kHz/cm^{2}$ (including a safety factor 3) motivates the installation of RPC chambers to guarantee redundancy with the CSC chambers already present. The actual RPC technology of CMS cannot sustain the expected background level. The new technology that will be chosen should have a high rate capability and provides a good spatial and timing resolution. A new generation of Glass-RPC (GRPC) using low-resistivity (LR) glass is proposed to equip at least the two most far away of the four high $畏$ muon stations of CMS. First the design of small size prototypes and studies of their performance in high-rate particles flux is presented. Then the proposed designs for large size chambers and their fast-timing electronic readout are examined and preliminary results are provided. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.01398v2-abstract-full').style.display = 'none'; document.getElementById('1606.01398v2-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 July, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 4 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2016. </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, 11 figures, Conference proceeding for the 2016 Resistive Plate Chambers and Related Detectors</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.08172">arXiv:1605.08172</a> <span> [<a href="https://arxiv.org/pdf/1605.08172">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="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/10.1088/1748-0221/11/09/C09018">10.1088/1748-0221/11/09/C09018 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Preliminary results of Resistive Plate Chambers operated with eco-friendly gas mixtures for application in the CMS experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Van+Auwegem%2C+P">P. Van Auwegem</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Cauwenbergh%2C+S">S. Cauwenbergh</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Muhammad%2C+S">S. Muhammad</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Primavera%2C+F">F. Primavera</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</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="1605.08172v1-abstract-short" style="display: inline;"> The operations of Resistive Plate Chambers in LHC experiments require Fluorine based (F-based) gases for optimal performance. Recent European regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. In view of the CMS experiment upgrade, several tests are ongoing to measure the performance of the detector with these new ecological gas mixtures, in terms of ef… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.08172v1-abstract-full').style.display = 'inline'; document.getElementById('1605.08172v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.08172v1-abstract-full" style="display: none;"> The operations of Resistive Plate Chambers in LHC experiments require Fluorine based (F-based) gases for optimal performance. Recent European regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. In view of the CMS experiment upgrade, several tests are ongoing to measure the performance of the detector with these new ecological gas mixtures, in terms of efficiency, streamer probability, induced charge and time resolution. Prototype chambers with readout pads and with the standard CMS electronic setup are under test. In this paper preliminary results on performance of RPCs operated with a potential eco-friendly gas candidate 1,3,3,3-Tetrafluoropropene, commercially known as HFO-1234ze, with CO2 and CF3I based gas mixtures are presented and discussed for the possible application in the CMS experiment. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.08172v1-abstract-full').style.display = 'none'; document.getElementById('1605.08172v1-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, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </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">7 pages, 7 figures. arXiv admin note: text overlap with arXiv:1505.01648</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.06798">arXiv:1605.06798</a> <span> [<a href="https://arxiv.org/pdf/1605.06798">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="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Performance of Resistive Plate Chambers installed during the first long shutdown of the CMS experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Sultanov%2C+G">G. Sultanov</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Stoykova%2C+S">S. Stoykova</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Sayed%2C+A">A. Sayed</a>, <a href="/search/physics?searchtype=author&query=Radi%2C+A">A. Radi</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+S">S. Aly</a>, <a href="/search/physics?searchtype=author&query=Singh%2C+G">G. Singh</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Iaselli%2C+G">G. Iaselli</a>, <a href="/search/physics?searchtype=author&query=Maggi%2C+M">M. Maggi</a>, <a href="/search/physics?searchtype=author&query=Pugliese%2C+G">G. Pugliese</a>, <a href="/search/physics?searchtype=author&query=Verwilligen%2C+P">P. Verwilligen</a>, <a href="/search/physics?searchtype=author&query=Van+Doninck%2C+W">W. Van Doninck</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+A">A. Sharma</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Primavera%2C+F">F. Primavera</a>, <a href="/search/physics?searchtype=author&query=Cimmino%2C+A">A. Cimmino</a> , et al. (71 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="1605.06798v1-abstract-short" style="display: inline;"> The CMS experiment, located at the CERN Large Hadron Collider, has a redundant muon system composed by three different detector technologies: Cathode Strip Chambers (in the forward regions), Drift Tubes (in the central region) and Resistive Plate Chambers (both its central and forward regions). All three are used for muon reconstruction and triggering. During the first long shutdown (LS1) of the L… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.06798v1-abstract-full').style.display = 'inline'; document.getElementById('1605.06798v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.06798v1-abstract-full" style="display: none;"> The CMS experiment, located at the CERN Large Hadron Collider, has a redundant muon system composed by three different detector technologies: Cathode Strip Chambers (in the forward regions), Drift Tubes (in the central region) and Resistive Plate Chambers (both its central and forward regions). All three are used for muon reconstruction and triggering. During the first long shutdown (LS1) of the LHC (2013-2014) the CMS muon system has been upgraded with 144 newly installed RPCs on the forth forward stations. The new chambers ensure and enhance the muon trigger efficiency in the high luminosity conditions of the LHC Run2. The chambers have been successfully installed and commissioned. The system has been run successfully and experimental data has been collected and analyzed. The performance results of the newly installed RPCs will be presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.06798v1-abstract-full').style.display = 'none'; document.getElementById('1605.06798v1-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 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </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, 6 figures, proceeding to The XIII workshop on Resistive Plate Chambers and Related Detectors (RPC2016)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CMS CR-2016/090 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.01691">arXiv:1605.01691</a> <span> [<a href="https://arxiv.org/pdf/1605.01691">pdf</a>, <a href="https://arxiv.org/ps/1605.01691">ps</a>, <a href="https://arxiv.org/format/1605.01691">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/10.1088/1748-0221/11/08/P08019">10.1088/1748-0221/11/08/P08019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Eco-friendly gas mixtures for Resistive Plate Chambers based on Tetrafluoropropene and Helium </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Muhammad%2C+S">S. Muhammad</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Primavera%2C+F">F. Primavera</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</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="1605.01691v1-abstract-short" style="display: inline;"> Due to the recent restrictions deriving from the application of the Kyoto protocol, the main components of the gas mixtures presently used in the Resistive Plate Chambers systems of the LHC experiments will be most probably phased out of production in the coming years. Identifying possible replacements with the adequate characteristics requires an intense R&D, which was recently started, also in c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.01691v1-abstract-full').style.display = 'inline'; document.getElementById('1605.01691v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.01691v1-abstract-full" style="display: none;"> Due to the recent restrictions deriving from the application of the Kyoto protocol, the main components of the gas mixtures presently used in the Resistive Plate Chambers systems of the LHC experiments will be most probably phased out of production in the coming years. Identifying possible replacements with the adequate characteristics requires an intense R&D, which was recently started, also in collaborations across the various experiments. Possible candidates have been proposed and are thoroughly investigated. Some tests on one of the most promising candidate - HFO-1234ze, an allotropic form of tetrafluoropropane- have already been reported. Here an innovative approach, based on the use of Helium, to solve the problems related to the too elevate operating voltage of HFO-1234ze based gas mixtures, is discussed and the relative first results are shown. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.01691v1-abstract-full').style.display = 'none'; document.getElementById('1605.01691v1-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 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </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">9 pages, 6 figures, 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1605.00440">arXiv:1605.00440</a> <span> [<a href="https://arxiv.org/pdf/1605.00440">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="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Radiation Tests of Real-Sized Prototype RPCs for the Future CMS RPC Upscope </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Lee%2C+K+S">K. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+S">S. Choi</a>, <a href="/search/physics?searchtype=author&query=Hong%2C+B+S">B. S. Hong</a>, <a href="/search/physics?searchtype=author&query=Jo%2C+M">M. Jo</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+J+W">J. W. Kang</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+M">M. Kang</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+H">H. Kim</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+K">K. Lee</a>, <a href="/search/physics?searchtype=author&query=Parka%2C+S+K">S. K. Parka</a>, <a href="/search/physics?searchtype=author&query=Cimmino%2C+A">A. Cimmino</a>, <a href="/search/physics?searchtype=author&query=Crucy%2C+S">S. Crucy</a>, <a href="/search/physics?searchtype=author&query=Fagot%2C+A">A. Fagot</a>, <a href="/search/physics?searchtype=author&query=Gul%2C+M">M. Gul</a>, <a href="/search/physics?searchtype=author&query=Rios%2C+A+A+O">A. A. O. Rios</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Zaganidis%2C+N">N. Zaganidis</a>, <a href="/search/physics?searchtype=author&query=Ali%2C+S">S. Ali</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Radi%2C+A">A. Radi</a>, <a href="/search/physics?searchtype=author&query=Sayed%2C+A">A. Sayed</a>, <a href="/search/physics?searchtype=author&query=Singh%2C+G">G. Singh</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Iaselli%2C+G">G. Iaselli</a>, <a href="/search/physics?searchtype=author&query=Maggi%2C+M">M. Maggi</a>, <a href="/search/physics?searchtype=author&query=Pugliese%2C+G">G. Pugliese</a> , et al. (71 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="1605.00440v2-abstract-short" style="display: inline;"> We report on a systematic study of double-gap and four-gap phenolic resistive plate chambers (RPCs) for future high-畏 RPC triggers in the CMS. In the present study, we constructed real-sized double-gap and four-gap RPCs with gap thicknesses of 1.6 and 0.8 mm, respectively, with 2-mm-thick phenolic high-pressure-laminated (HPL) plates. We examined the prototype RPCs for cosmic rays and 100 GeV muon… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.00440v2-abstract-full').style.display = 'inline'; document.getElementById('1605.00440v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1605.00440v2-abstract-full" style="display: none;"> We report on a systematic study of double-gap and four-gap phenolic resistive plate chambers (RPCs) for future high-畏 RPC triggers in the CMS. In the present study, we constructed real-sized double-gap and four-gap RPCs with gap thicknesses of 1.6 and 0.8 mm, respectively, with 2-mm-thick phenolic high-pressure-laminated (HPL) plates. We examined the prototype RPCs for cosmic rays and 100 GeV muons provided by the SPS H4 beam line at CERN. We applied maximum gamma rates of 1.5 kHz cm-2 provided by 137Cs sources at Korea University and the GIF++ irradiation facility installed at the SPS H4 beam line to examine the rate capabilities of the prototype RPCs. In contrast to the case of the four-gap RPCs, we found the relatively high threshold was conducive to effectively suppressing the rapid increase of strip cluster sizes of muon hits with high voltage, especially when measuring the narrow-pitch strips. The gamma-induced currents drawn in the four-gap RPC were about one-fourth of those drawn in the double-gap RPC. The rate capabilities of both RPC types, proven through the present testing using gamma-ray sources, far exceeded the maximum rate expected in the new high-畏 endcap RPCs planned for future phase-II LHC runs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1605.00440v2-abstract-full').style.display = 'none'; document.getElementById('1605.00440v2-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 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2016. </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">Conference proceeding for the 2016 Resistive Plate Chambers and Related Detectors 8 pages, 9 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/1512.08629">arXiv:1512.08629</a> <span> [<a href="https://arxiv.org/pdf/1512.08629">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> <p class="title is-5 mathjax"> Fiber Bragg Grating sensors for deformation monitoring of GEM foils in HEP detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Muhammad%2C+S">S. Muhammad</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Raffone%2C+G">G. Raffone</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</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="1512.08629v1-abstract-short" style="display: inline;"> Fiber Bragg Grating (FBG) sensors have been so far mainly used in high energy physics (HEP) as high precision positioning and re-positioning sensors and as low cost, easy to mount, radiation hard and low space- consuming temperature and humidity devices. FBGs are also commonly used for very precise strain measurements. In this work we present a novel use of FBGs as flatness and mechanical tensioni… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08629v1-abstract-full').style.display = 'inline'; document.getElementById('1512.08629v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.08629v1-abstract-full" style="display: none;"> Fiber Bragg Grating (FBG) sensors have been so far mainly used in high energy physics (HEP) as high precision positioning and re-positioning sensors and as low cost, easy to mount, radiation hard and low space- consuming temperature and humidity devices. FBGs are also commonly used for very precise strain measurements. In this work we present a novel use of FBGs as flatness and mechanical tensioning sensors applied to the wide Gas Electron Multiplier (GEM) foils of the GE1/1 chambers of the Compact Muon Solenoid (CMS) experiment at Large Hadron Collider (LHC) of CERN. A network of FBG sensors has been used to determine the optimal mechanical tension applied and to characterize the mechanical stress applied to the foils. The preliminary results of the test performed on a full size GE1/1 final prototype and possible future developments will be discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08629v1-abstract-full').style.display = 'none'; document.getElementById('1512.08629v1-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> 29 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </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">Four pages, seven figures. Presented by Michele Caponero at IWASI 2015, Gallipoli (Italy)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Frascati preprint INFN-15-13/LNF </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.08621">arXiv:1512.08621</a> <span> [<a href="https://arxiv.org/pdf/1512.08621">pdf</a>, <a href="https://arxiv.org/ps/1512.08621">ps</a>, <a href="https://arxiv.org/format/1512.08621">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"> Characterization of the GEM foil materials </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Muhammad%2C+S">S. Muhammad</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Raffone%2C+G">G. Raffone</a>, <a href="/search/physics?searchtype=author&query=Caponero%2C+M">M. Caponero</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Primavera%2C+F">F. Primavera</a>, <a href="/search/physics?searchtype=author&query=Cerbelli%2C+S">S. Cerbelli</a>, <a href="/search/physics?searchtype=author&query=Lalli%2C+A">A. Lalli</a>, <a href="/search/physics?searchtype=author&query=Valente%2C+M">M. Valente</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Teissandier%2C+B">B. Teissandier</a>, <a href="/search/physics?searchtype=author&query=Taborelli%2C+M">M. Taborelli</a>, <a href="/search/physics?searchtype=author&query=Parvis%2C+M">M. Parvis</a>, <a href="/search/physics?searchtype=author&query=Grassini%2C+S">S. Grassini</a>, <a href="/search/physics?searchtype=author&query=Tirill%C3%B3%2C+J">J. Tirill贸</a>, <a href="/search/physics?searchtype=author&query=Sarasini%2C+F">F. Sarasini</a>, <a href="/search/physics?searchtype=author&query=Franchi%2C+A+V">A. V. Franchi</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="1512.08621v1-abstract-short" style="display: inline;"> Systematic studies on the GEM foil material are performed to measure the moisture diffusion rate and saturation level. These studies are important because the presence of this compound inside the detector's foil can possibly change its mechanical and electrical properties and, in such a way, the detector performance can be affected. To understand this phenomenon, a model is developed with COMSOL M… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08621v1-abstract-full').style.display = 'inline'; document.getElementById('1512.08621v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.08621v1-abstract-full" style="display: none;"> Systematic studies on the GEM foil material are performed to measure the moisture diffusion rate and saturation level. These studies are important because the presence of this compound inside the detector's foil can possibly change its mechanical and electrical properties and, in such a way, the detector performance can be affected. To understand this phenomenon, a model is developed with COMSOL Multhiphysics v. 4.3, which described the adsorption and diffusion within the geometry of GEM foil, the concentration profiles and the time required to saturate the foil. The COMSOL model is verified by experimental observations on a GEM foil sample. This note will describe the model and its experimental verification results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08621v1-abstract-full').style.display = 'none'; document.getElementById('1512.08621v1-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> 29 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </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">Four pages, eight figures, presented by S. Muhammad at the MPGD2015, Trieste, Italy</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN-15-12/LNF </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.08542">arXiv:1512.08542</a> <span> [<a href="https://arxiv.org/pdf/1512.08542">pdf</a>, <a href="https://arxiv.org/ps/1512.08542">ps</a>, <a href="https://arxiv.org/format/1512.08542">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"> Candidate eco-friendly gas mixtures for MPGDs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Muhammad%2C+S">S. Muhammad</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Primavera%2C+F">F. Primavera</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Parvis%2C+M">M. Parvis</a>, <a href="/search/physics?searchtype=author&query=Grassing%2C+S">S. Grassing</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Kj%C3%B8bro%2C+J">J. Kj酶bro</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+A">A. Sharma</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+D">D. Yang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+G">G. Chen</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Q">Q. Li</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="1512.08542v1-abstract-short" style="display: inline;"> Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.08542v1-abstract-full" style="display: none;"> Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08542v1-abstract-full').style.display = 'none'; document.getElementById('1512.08542v1-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 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </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">Four pages, four figures, presented by Giovanna Saviano at MPGD2015, Trieste, Italy</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN-15-11 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.08529">arXiv:1512.08529</a> <span> [<a href="https://arxiv.org/pdf/1512.08529">pdf</a>, <a href="https://arxiv.org/ps/1512.08529">ps</a>, <a href="https://arxiv.org/format/1512.08529">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"> A novel application of Fiber Bragg Grating (FBG) sensors in MPGD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbaneo%2C+D">D. Abbaneo</a>, <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A+A">A. A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=Akl%2C+M+A">M. Abi Akl</a>, <a href="/search/physics?searchtype=author&query=Aboamer%2C+O">O. Aboamer</a>, <a href="/search/physics?searchtype=author&query=Acosta%2C+D">D. Acosta</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+A">A. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Altieri%2C+P">P. Altieri</a>, <a href="/search/physics?searchtype=author&query=Asawatangtrakuldee%2C+C">C. Asawatangtrakuldee</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Awan%2C+I">I. Awan</a>, <a href="/search/physics?searchtype=author&query=Bally%2C+S">S. Bally</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Banerjee%2C+S">S. Banerjee</a>, <a href="/search/physics?searchtype=author&query=Barashko%2C+V">V. Barashko</a>, <a href="/search/physics?searchtype=author&query=Barria%2C+P">P. Barria</a>, <a href="/search/physics?searchtype=author&query=Bencze%2C+G">G. Bencze</a>, <a href="/search/physics?searchtype=author&query=Beni%2C+N">N. Beni</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a> , et al. (133 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="1512.08529v1-abstract-short" style="display: inline;"> We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of Micro Pattern Gaseous Detector (MPGD), with particular attention to the realisation of the largest triple (Gas electron Multiplier) GEM chambers so far operated, the GE1/1 chambers of the CMS experiment at LHC. The GE1/1 CMS project consists of 144 GEM chambers of about 0.5 m2 active are… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08529v1-abstract-full').style.display = 'inline'; document.getElementById('1512.08529v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.08529v1-abstract-full" style="display: none;"> We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of Micro Pattern Gaseous Detector (MPGD), with particular attention to the realisation of the largest triple (Gas electron Multiplier) GEM chambers so far operated, the GE1/1 chambers of the CMS experiment at LHC. The GE1/1 CMS project consists of 144 GEM chambers of about 0.5 m2 active area each, employing three GEM foils per chamber, to be installed in the forward region of the CMS endcap during the long shutdown of LHC in 2108-2019. The large active area of each GE1/1 chamber consists of GEM foils that are mechanically stretched in order to secure their flatness and the consequent uniform performance of the GE1/1 chamber across its whole active surface. So far FBGs have been used in high energy physics mainly as high precision positioning and re-positioning sensors and as low cost, easy to mount, low space consuming temperature sensors. FBGs are also commonly used for very precise strain measurements in material studies. In this work we present a novel use of FBGs as flatness and mechanical tensioning sensors applied to the wide GEM foils of the GE1/1 chambers. A network of FBG sensors have been used to determine the optimal mechanical tension applied and to characterise the mechanical tension that should be applied to the foils. We discuss the results of the test done on a full-sized GE1/1 final prototype, the studies done to fully characterise the GEM material, how this information was used to define a standard assembly procedure and possible future developments. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08529v1-abstract-full').style.display = 'none'; document.getElementById('1512.08529v1-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 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </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">4 pages, 4 figures, presented by Luigi Benussi at MPGD 2015 (Trieste, Italy). arXiv admin note: text overlap with arXiv:1512.08481</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN-15-10/LNF </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1512.08481">arXiv:1512.08481</a> <span> [<a href="https://arxiv.org/pdf/1512.08481">pdf</a>, <a href="https://arxiv.org/ps/1512.08481">ps</a>, <a href="https://arxiv.org/format/1512.08481">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/10.1016/j.nima.2016.01.059">10.1016/j.nima.2016.01.059 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Fiber Bragg Grating (FBG) sensors as flatness and mechanical stretching sensors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbaneo%2C+D">D. Abbaneo</a>, <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A+A">A. A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=Akl%2C+M+A">M. Abi Akl</a>, <a href="/search/physics?searchtype=author&query=Aboamer%2C+O">O. Aboamer</a>, <a href="/search/physics?searchtype=author&query=Acosta%2C+D">D. Acosta</a>, <a href="/search/physics?searchtype=author&query=Ahmad%2C+A">A. Ahmad</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Altieri%2C+P">P. Altieri</a>, <a href="/search/physics?searchtype=author&query=Asawatangtrakuldee%2C+C">C. Asawatangtrakuldee</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Awan%2C+I">I. Awan</a>, <a href="/search/physics?searchtype=author&query=Bally%2C+S">S. Bally</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Banerjee%2C+S">S. Banerjee</a>, <a href="/search/physics?searchtype=author&query=Barashko%2C+V">V. Barashko</a>, <a href="/search/physics?searchtype=author&query=Barria%2C+P">P. Barria</a>, <a href="/search/physics?searchtype=author&query=Bencze%2C+G">G. Bencze</a>, <a href="/search/physics?searchtype=author&query=Beni%2C+N">N. Beni</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a> , et al. (133 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="1512.08481v1-abstract-short" style="display: inline;"> A novel approach which uses Fibre Bragg Grating (FBG) sensors has been utilised to assess and monitor the flatness of Gaseous Electron Multipliers (GEM) foils. The setup layout and preliminary results are presented. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1512.08481v1-abstract-full" style="display: none;"> A novel approach which uses Fibre Bragg Grating (FBG) sensors has been utilised to assess and monitor the flatness of Gaseous Electron Multipliers (GEM) foils. The setup layout and preliminary results are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1512.08481v1-abstract-full').style.display = 'none'; document.getElementById('1512.08481v1-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 December, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2015. </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">Two pages, one figure. Presented by Luigi Benussi (corresponding author) to Elba 2015 conference</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Frascati Preprint INFN-15-09/LNF </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.01648">arXiv:1505.01648</a> <span> [<a href="https://arxiv.org/pdf/1505.01648">pdf</a>, <a href="https://arxiv.org/ps/1505.01648">ps</a>, <a href="https://arxiv.org/format/1505.01648">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"> A study of HFO-1234ze (1,3,3,3-Tetrafluoropropene) as an eco-friendly replacement in RPC detectors </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</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="1505.01648v1-abstract-short" style="display: inline;"> The operations of Resistive Plate Chambers in LHC experiments require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This report shows results of studies on performance of RPCs operated with a potential eco-friendly gas candidate 1,3,3,3-Tetrafluoropropene, commercially known as HFO-1234ze. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.01648v1-abstract-full" style="display: none;"> The operations of Resistive Plate Chambers in LHC experiments require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This report shows results of studies on performance of RPCs operated with a potential eco-friendly gas candidate 1,3,3,3-Tetrafluoropropene, commercially known as HFO-1234ze. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.01648v1-abstract-full').style.display = 'none'; document.getElementById('1505.01648v1-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 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </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, 20 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN report INFN-14-14/LNF </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.00701">arXiv:1505.00701</a> <span> [<a href="https://arxiv.org/pdf/1505.00701">pdf</a>, <a href="https://arxiv.org/format/1505.00701">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/10.1088/1748-0221/13/03/P03012">10.1088/1748-0221/13/03/P03012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Properties of potential eco-friendly gas replacements for particle detectors in high-energy physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Kj%C3%B8lbro%2C+J">J. Kj酶lbro</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+A">A. Sharma</a>, <a href="/search/physics?searchtype=author&query=Yang%2C+D">D. Yang</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+G">G. Chen</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Q">Q. Li</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="1505.00701v1-abstract-short" style="display: inline;"> Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.00701v1-abstract-full" style="display: none;"> Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potential eco-friendly gas candidate replacements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.00701v1-abstract-full').style.display = 'none'; document.getElementById('1505.00701v1-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 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </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">38 pages, 9 figures, 8 tables. To be submitted to Journal of Instrumentation</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN report INFN-14-13/LNF. CERN report CERN-OPEN-2015-004 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> 2018_JINST_13_P03012 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.8039">arXiv:1412.8039</a> <span> [<a href="https://arxiv.org/pdf/1412.8039">pdf</a>, <a href="https://arxiv.org/ps/1412.8039">ps</a>, <a href="https://arxiv.org/format/1412.8039">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/10.1088/1748-0221/10/01/C01003">10.1088/1748-0221/10/01/C01003 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Performance of the gas gain monitoring system of the CMS RPC muon detector </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Raffone%2C+G">G. Raffone</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Cai%2C+J">J. Cai</a>, <a href="/search/physics?searchtype=author&query=Li%2C+Q">Q. Li</a>, <a href="/search/physics?searchtype=author&query=Liu%2C+S">S. Liu</a>, <a href="/search/physics?searchtype=author&query=Qian%2C+S">S. Qian</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+D">D. Wang</a>, <a href="/search/physics?searchtype=author&query=Xu%2C+Z">Z. Xu</a>, <a href="/search/physics?searchtype=author&query=Zhang%2C+F">F. Zhang</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+Y">Y. Choi</a>, <a href="/search/physics?searchtype=author&query=Kim%2C+D">D. Kim</a>, <a href="/search/physics?searchtype=author&query=Choi%2C+S">S. Choi</a>, <a href="/search/physics?searchtype=author&query=Hong%2C+B">B. Hong</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+J+W">J. W. Kang</a>, <a href="/search/physics?searchtype=author&query=Kang%2C+M">M. Kang</a>, <a href="/search/physics?searchtype=author&query=Kwon%2C+J+H">J. H. Kwon</a>, <a href="/search/physics?searchtype=author&query=Lee%2C+K+S">K. S. Lee</a>, <a href="/search/physics?searchtype=author&query=Park%2C+S+K">S. K. Park</a> , et al. (60 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="1412.8039v1-abstract-short" style="display: inline;"> The RPC muon detector of the CMS experiment at the LHC (CERN, Geneva, Switzerland) is equipped with a Gas Gain Monitoring (GGM) system. A report on the stability of the system during the 2011-2012 data taking run is given, as well as the observation of an effect which suggests a novel method for the monitoring of gas mixture composition. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.8039v1-abstract-full" style="display: none;"> The RPC muon detector of the CMS experiment at the LHC (CERN, Geneva, Switzerland) is equipped with a Gas Gain Monitoring (GGM) system. A report on the stability of the system during the 2011-2012 data taking run is given, as well as the observation of an effect which suggests a novel method for the monitoring of gas mixture composition. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.8039v1-abstract-full').style.display = 'none'; document.getElementById('1412.8039v1-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 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </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">Presented at RPC2014, Beijing, China. Accepted for publication on JINST</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> INFN-14-22/LNF </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1412.0228">arXiv:1412.0228</a> <span> [<a href="https://arxiv.org/pdf/1412.0228">pdf</a>, <a href="https://arxiv.org/format/1412.0228">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"> Performance of a Large-Area GEM Detector Prototype for the Upgrade of the CMS Muon Endcap System </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbaneo%2C+D">D. Abbaneo</a>, <a href="/search/physics?searchtype=author&query=Abbas%2C+M">M. Abbas</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Abdelalim%2C+A+A">A. A. Abdelalim</a>, <a href="/search/physics?searchtype=author&query=Akl%2C+M+A">M. Abi Akl</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Ahmed%2C+W">W. Ahmed</a>, <a href="/search/physics?searchtype=author&query=Altieri%2C+P">P. Altieri</a>, <a href="/search/physics?searchtype=author&query=Aly%2C+R">R. Aly</a>, <a href="/search/physics?searchtype=author&query=Asawatangtrakuldee%2C+C">C. Asawatangtrakuldee</a>, <a href="/search/physics?searchtype=author&query=Ashfaq%2C+A">A. Ashfaq</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Awan%2C+I">I. Awan</a>, <a href="/search/physics?searchtype=author&query=Bally%2C+S">S. Bally</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Banerjee%2C+S">S. Banerjee</a>, <a href="/search/physics?searchtype=author&query=Barria%2C+P">P. Barria</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bhopatkar%2C+V">V. Bhopatkar</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bos%2C+J">J. Bos</a>, <a href="/search/physics?searchtype=author&query=Bouhali%2C+O">O. Bouhali</a>, <a href="/search/physics?searchtype=author&query=Braibant%2C+S">S. Braibant</a>, <a href="/search/physics?searchtype=author&query=Buontempo%2C+S">S. Buontempo</a> , et al. (113 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="1412.0228v2-abstract-short" style="display: inline;"> Gas Electron Multiplier (GEM) technology is being considered for the forward muon upgrade of the CMS experiment in Phase 2 of the CERN LHC. Its first implementation is planned for the GE1/1 system in the $1.5 < \mid畏\mid < 2.2$ region of the muon endcap mainly to control muon level-1 trigger rates after the second long LHC shutdown. A GE1/1 triple-GEM detector is read out by 3,072 radial strips wi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0228v2-abstract-full').style.display = 'inline'; document.getElementById('1412.0228v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1412.0228v2-abstract-full" style="display: none;"> Gas Electron Multiplier (GEM) technology is being considered for the forward muon upgrade of the CMS experiment in Phase 2 of the CERN LHC. Its first implementation is planned for the GE1/1 system in the $1.5 < \mid畏\mid < 2.2$ region of the muon endcap mainly to control muon level-1 trigger rates after the second long LHC shutdown. A GE1/1 triple-GEM detector is read out by 3,072 radial strips with 455 $渭$rad pitch arranged in eight $畏$-sectors. We assembled a full-size GE1/1 prototype of 1m length at Florida Tech and tested it in 20-120 GeV hadron beams at Fermilab using Ar/CO$_{2}$ 70:30 and the RD51 scalable readout system. Four small GEM detectors with 2-D readout and an average measured azimuthal resolution of 36 $渭$rad provided precise reference tracks. Construction of this largest GEM detector built to-date is described. Strip cluster parameters, detection efficiency, and spatial resolution are studied with position and high voltage scans. The plateau detection efficiency is [97.1 $\pm$ 0.2 (stat)]\%. The azimuthal resolution is found to be [123.5 $\pm$ 1.6 (stat)] $渭$rad when operating in the center of the efficiency plateau and using full pulse height information. The resolution can be slightly improved by $\sim$ 10 $渭$rad when correcting for the bias due to discrete readout strips. The CMS upgrade design calls for readout electronics with binary hit output. When strip clusters are formed correspondingly without charge-weighting and with fixed hit thresholds, a position resolution of [136.8 $\pm$ 2.5 stat] $渭$rad is measured, consistent with the expected resolution of strip-pitch/$\sqrt{12}$ = 131.3 $渭$rad. Other $畏$-sectors of the detector show similar response and performance. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1412.0228v2-abstract-full').style.display = 'none'; document.getElementById('1412.0228v2-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 December, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 30 November, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2014. </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, 32 figures, submitted to Proc. 2014 IEEE Nucl. Sci. Symposium, Seattle, WA, reference added</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1302.5225">arXiv:1302.5225</a> <span>  </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"> Study of gas contaminants and interaction with materials in RPC closed loop system </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Aurilio%2C+R">R. Aurilio</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Greci%2C+T">T. Greci</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Vendittozzi%2C+C">C. Vendittozzi</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Calabria%2C+C">C. Calabria</a>, <a href="/search/physics?searchtype=author&query=Colaleo%2C+A">A. Colaleo</a>, <a href="/search/physics?searchtype=author&query=Iaselli%2C+G">G. Iaselli</a>, <a href="/search/physics?searchtype=author&query=Maggi%2C+M">M. Maggi</a>, <a href="/search/physics?searchtype=author&query=Nuzzo%2C+S">S. Nuzzo</a>, <a href="/search/physics?searchtype=author&query=Pugliese%2C+G">G. Pugliese</a>, <a href="/search/physics?searchtype=author&query=Verwilligen%2C+P">P. Verwilligen</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+A">A. Sharma</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="1302.5225v2-abstract-short" style="display: inline;"> Resistive Plate Counters (RPC) detectors at the Large Hadron Collider (LHC) experiments use gas recirculation systems to cope with large gas mixture volumes and costs. In this paper a long-term systematic study about gas purifiers, gas contaminants and detector performance is discussed. The study aims at measuring the lifetime of purifiers with new and used cartridge material along with contaminan… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.5225v2-abstract-full').style.display = 'inline'; document.getElementById('1302.5225v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1302.5225v2-abstract-full" style="display: none;"> Resistive Plate Counters (RPC) detectors at the Large Hadron Collider (LHC) experiments use gas recirculation systems to cope with large gas mixture volumes and costs. In this paper a long-term systematic study about gas purifiers, gas contaminants and detector performance is discussed. The study aims at measuring the lifetime of purifiers with new and used cartridge material along with contaminants release in the gas system. During the data-taking the response of several RPC double-gap detectors was monitored in order to characterize the correlation between dark currents, filter status and gas contaminants. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1302.5225v2-abstract-full').style.display = 'none'; document.getElementById('1302.5225v2-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 March, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 February, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2013. </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">This paper has been withdrawn by the authors. revised version of already uploaded paper [1210.1819]</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1301.6978">arXiv:1301.6978</a> <span> [<a href="https://arxiv.org/pdf/1301.6978">pdf</a>, <a href="https://arxiv.org/format/1301.6978">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/10.1088/1748-0221/8/03/P03001">10.1088/1748-0221/8/03/P03001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Simulation of the CMS Resistive Plate Chambers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hadjiiska%2C+R">R. Hadjiiska</a>, <a href="/search/physics?searchtype=author&query=Litov%2C+L">L. Litov</a>, <a href="/search/physics?searchtype=author&query=Pavlov%2C+B">B. Pavlov</a>, <a href="/search/physics?searchtype=author&query=Petkov%2C+P">P. Petkov</a>, <a href="/search/physics?searchtype=author&query=Dimitrov%2C+A">A. Dimitrov</a>, <a href="/search/physics?searchtype=author&query=Beernaert%2C+K">K. Beernaert</a>, <a href="/search/physics?searchtype=author&query=Cimmino%2C+A">A. Cimmino</a>, <a href="/search/physics?searchtype=author&query=Costantini%2C+S">S. Costantini</a>, <a href="/search/physics?searchtype=author&query=Garcia%2C+G">G. Garcia</a>, <a href="/search/physics?searchtype=author&query=Lellouch%2C+J">J. Lellouch</a>, <a href="/search/physics?searchtype=author&query=Marinov%2C+A">A. Marinov</a>, <a href="/search/physics?searchtype=author&query=Ocampo%2C+A">A. Ocampo</a>, <a href="/search/physics?searchtype=author&query=Strobbe%2C+N">N. Strobbe</a>, <a href="/search/physics?searchtype=author&query=Thyssen%2C+F">F. Thyssen</a>, <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Verwilligen%2C+P">P. Verwilligen</a>, <a href="/search/physics?searchtype=author&query=Yazgan%2C+E">E. Yazgan</a>, <a href="/search/physics?searchtype=author&query=Zaganidis%2C+N">N. Zaganidis</a>, <a href="/search/physics?searchtype=author&query=Aleksandrov%2C+A">A. Aleksandrov</a>, <a href="/search/physics?searchtype=author&query=Genchev%2C+V">V. Genchev</a>, <a href="/search/physics?searchtype=author&query=Iaydjiev%2C+P">P. Iaydjiev</a>, <a href="/search/physics?searchtype=author&query=Rodozov%2C+M">M. Rodozov</a>, <a href="/search/physics?searchtype=author&query=Shopova%2C+M">M. Shopova</a>, <a href="/search/physics?searchtype=author&query=Sultanov%2C+G">G. Sultanov</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a> , et al. (39 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="1301.6978v1-abstract-short" style="display: inline;"> The Resistive Plate Chamber (RPC) muon subsystem contributes significantly to the formation of the trigger decision and reconstruction of the muon trajectory parameters. Simulation of the RPC response is a crucial part of the entire CMS Monte Carlo software and directly influences the final physical results. An algorithm based on the parametrization of RPC efficiency, noise, cluster size and timin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.6978v1-abstract-full').style.display = 'inline'; document.getElementById('1301.6978v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1301.6978v1-abstract-full" style="display: none;"> The Resistive Plate Chamber (RPC) muon subsystem contributes significantly to the formation of the trigger decision and reconstruction of the muon trajectory parameters. Simulation of the RPC response is a crucial part of the entire CMS Monte Carlo software and directly influences the final physical results. An algorithm based on the parametrization of RPC efficiency, noise, cluster size and timing for every strip has been developed. Experimental data obtained from cosmic and proton-proton collisions at $\sqrt{s}=7$ TeV have been used for determination of the parameters. A dedicated validation procedure has been developed. A good agreement between the simulated and experimental data has been achieved. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1301.6978v1-abstract-full').style.display = 'none'; document.getElementById('1301.6978v1-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> 29 January, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2013. </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">to be 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/1211.3939">arXiv:1211.3939</a> <span> [<a href="https://arxiv.org/pdf/1211.3939">pdf</a>, <a href="https://arxiv.org/ps/1211.3939">ps</a>, <a href="https://arxiv.org/format/1211.3939">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"> Beam Test Results for New Full-scale GEM Prototypes for a Future Upgrade of the CMS High-eta Muon System </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Abbaneo%2C+D">D. Abbaneo</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Armagnaud%2C+C">C. Armagnaud</a>, <a href="/search/physics?searchtype=author&query=Aspell%2C+P">P. Aspell</a>, <a href="/search/physics?searchtype=author&query=Assran%2C+Y">Y. Assran</a>, <a href="/search/physics?searchtype=author&query=Ban%2C+Y">Y. Ban</a>, <a href="/search/physics?searchtype=author&query=Bally%2C+S">S. Bally</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Berzano%2C+U">U. Berzano</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Bos%2C+J">J. Bos</a>, <a href="/search/physics?searchtype=author&query=Bunkowski%2C+K">K. Bunkowski</a>, <a href="/search/physics?searchtype=author&query=Cai%2C+J">J. Cai</a>, <a href="/search/physics?searchtype=author&query=Chatelain%2C+J+P">J. P. Chatelain</a>, <a href="/search/physics?searchtype=author&query=Christiansen%2C+J">J. Christiansen</a>, <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Colaleo%2C+A">A. Colaleo</a>, <a href="/search/physics?searchtype=author&query=Garcia%2C+A+C">A. Conde Garcia</a>, <a href="/search/physics?searchtype=author&query=David%2C+E">E. David</a>, <a href="/search/physics?searchtype=author&query=de+Robertis%2C+G">G. de Robertis</a>, <a href="/search/physics?searchtype=author&query=De+Oliveira%2C+R">R. De Oliveira</a>, <a href="/search/physics?searchtype=author&query=Pinto%2C+S+D">S. Duarte Pinto</a>, <a href="/search/physics?searchtype=author&query=Ferry%2C+S">S. Ferry</a>, <a href="/search/physics?searchtype=author&query=Formenti%2C+F">F. Formenti</a>, <a href="/search/physics?searchtype=author&query=Franconi%2C+L">L. Franconi</a> , et al. (34 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="1211.3939v1-abstract-short" style="display: inline;"> The CMS GEM collaboration is considering Gas Electron Multipliers (GEMs) for upgrading the CMS forward muon system in the 1.5<|eta|<2.4 endcap region. GEM detectors can provide precision tracking and fast trigger information. They would improve the CMS muon trigger and muon momentum resolution and provide missing redundancy in the high-eta region. Employing a new faster construction and assembly t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1211.3939v1-abstract-full').style.display = 'inline'; document.getElementById('1211.3939v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1211.3939v1-abstract-full" style="display: none;"> The CMS GEM collaboration is considering Gas Electron Multipliers (GEMs) for upgrading the CMS forward muon system in the 1.5<|eta|<2.4 endcap region. GEM detectors can provide precision tracking and fast trigger information. They would improve the CMS muon trigger and muon momentum resolution and provide missing redundancy in the high-eta region. Employing a new faster construction and assembly technique, we built four full-scale Triple-GEM muon detectors for the inner ring of the first muon endcap station. We plan to install these or further improved versions in CMS during the first long LHC shutdown in 2013/14 for continued testing. These detectors are designed for the stringent rate and resolution requirements in the increasingly hostile environments expected at CMS after the second long LHC shutdown in 2018/19. The new prototypes were studied in muon/pion beams at the CERN SPS. We discuss our experience with constructing the new full-scale production prototypes and present preliminary performance results from the beam test. We also tested smaller Triple-GEM prototypes with zigzag readout strips with 2 mm pitch in these beams and measured a spatial resolution of 73 microns. This readout offers a potential reduction of channel count and consequently electronics cost for this system while maintaining high spatial resolution. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1211.3939v1-abstract-full').style.display = 'none'; document.getElementById('1211.3939v1-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 November, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2012. </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, 9 figures, submitted to Proc. 2012 IEEE Nucl. Sci. Symposium, Anaheim, CA</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1210.1819">arXiv:1210.1819</a> <span> [<a href="https://arxiv.org/pdf/1210.1819">pdf</a>, <a href="https://arxiv.org/ps/1210.1819">ps</a>, <a href="https://arxiv.org/format/1210.1819">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/10.1088/1748-0221/8/03/T03008">10.1088/1748-0221/8/03/T03008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A study of gas contaminants and interaction with materials in RPC closed loop systems </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Colafranceschi%2C+S">S. Colafranceschi</a>, <a href="/search/physics?searchtype=author&query=Aurilio%2C+R">R. Aurilio</a>, <a href="/search/physics?searchtype=author&query=Benussi%2C+L">L. Benussi</a>, <a href="/search/physics?searchtype=author&query=Bianco%2C+S">S. Bianco</a>, <a href="/search/physics?searchtype=author&query=Passamonti%2C+L">L. Passamonti</a>, <a href="/search/physics?searchtype=author&query=Piccolo%2C+D">D. Piccolo</a>, <a href="/search/physics?searchtype=author&query=Pierluigi%2C+D">D. Pierluigi</a>, <a href="/search/physics?searchtype=author&query=Russo%2C+A">A. Russo</a>, <a href="/search/physics?searchtype=author&query=Ferrini%2C+M">M. Ferrini</a>, <a href="/search/physics?searchtype=author&query=Greci%2C+T">T. Greci</a>, <a href="/search/physics?searchtype=author&query=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Vendittozzi%2C+C">C. Vendittozzi</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Calabria%2C+C">C. Calabria</a>, <a href="/search/physics?searchtype=author&query=Colaleo%2C+A">A. Colaleo</a>, <a href="/search/physics?searchtype=author&query=Iaselli%2C+G">G. Iaselli</a>, <a href="/search/physics?searchtype=author&query=Maggi%2C+M">M. Maggi</a>, <a href="/search/physics?searchtype=author&query=Nuzzo%2C+S">S. Nuzzo</a>, <a href="/search/physics?searchtype=author&query=Pugliese%2C+G">G. Pugliese</a>, <a href="/search/physics?searchtype=author&query=Verwilligen%2C+P">P. Verwilligen</a>, <a href="/search/physics?searchtype=author&query=Sharma%2C+A">A. Sharma</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="1210.1819v1-abstract-short" style="display: inline;"> Resistive Plate Counters (RPC) detectors at the Large Hadron Collider (LHC) experiments use gas recirculation systems to cope with large gas mixture volumes and costs. In this paper a long-term systematic study about gas purifiers, gas contaminants and detector performance is discussed. The study aims at measuring the lifetime of purifiers with unused and used cartridge material along with contami… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.1819v1-abstract-full').style.display = 'inline'; document.getElementById('1210.1819v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1210.1819v1-abstract-full" style="display: none;"> Resistive Plate Counters (RPC) detectors at the Large Hadron Collider (LHC) experiments use gas recirculation systems to cope with large gas mixture volumes and costs. In this paper a long-term systematic study about gas purifiers, gas contaminants and detector performance is discussed. The study aims at measuring the lifetime of purifiers with unused and used cartridge material along with contaminants release in the gas system. During the data-taking the response of several RPC double-gap detectors was monitored in order to characterize the correlation between dark currents, filter status and gas contaminants. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1210.1819v1-abstract-full').style.display = 'none'; document.getElementById('1210.1819v1-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 October, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2012. </p> </li> </ol> <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=Benussi%2C+L&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a 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