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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/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/1111.7249">arXiv:1111.7249</a> <span> [<a href="https://arxiv.org/pdf/1111.7249">pdf</a>, <a href="https://arxiv.org/ps/1111.7249">ps</a>, <a href="https://arxiv.org/format/1111.7249">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/NSSMIC.2011.6154312">10.1109/NSSMIC.2011.6154312 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Construction and Performance of Large-Area Triple-GEM Prototypes for Future Upgrades of the CMS Forward Muon System </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Tytgat%2C+M">M. Tytgat</a>, <a href="/search/physics?searchtype=author&query=Marinov%2C+A">A. Marinov</a>, <a href="/search/physics?searchtype=author&query=Zaganidis%2C+N">N. Zaganidis</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=Teng%2C+H">H. Teng</a>, <a href="/search/physics?searchtype=author&query=Mohapatra%2C+A">A. Mohapatra</a>, <a href="/search/physics?searchtype=author&query=Moulik%2C+T">T. Moulik</a>, <a href="/search/physics?searchtype=author&query=Abbrescia%2C+M">M. Abbrescia</a>, <a href="/search/physics?searchtype=author&query=Colaleo%2C+A">A. Colaleo</a>, <a href="/search/physics?searchtype=author&query=de+Robertis%2C+G">G. de Robertis</a>, <a href="/search/physics?searchtype=author&query=Loddo%2C+F">F. Loddo</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=Tupputi%2C+S+A">S. A. Tupputi</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=Colafranceschi%2C+S">S. Colafranceschi</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=Saviano%2C+G">G. Saviano</a>, <a href="/search/physics?searchtype=author&query=Bagliesi%2C+M+G">M. G. Bagliesi</a>, <a href="/search/physics?searchtype=author&query=Cecchi%2C+R">R. Cecchi</a>, <a href="/search/physics?searchtype=author&query=Magazzu%2C+G">G. Magazzu</a>, <a href="/search/physics?searchtype=author&query=Oliveri%2C+E">E. Oliveri</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="1111.7249v1-abstract-short" style="display: inline;"> At present, part of the forward RPC muon system of the CMS detector at the CERN LHC remains uninstrumented in the high-畏region. An international collaboration is investigating the possibility of covering the 1.6 < |畏| < 2.4 region of the muon endcaps with large-area triple-GEM detectors. Given their good spatial resolution, high rate capability, and radiation hardness, these micro-pattern gas dete… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.7249v1-abstract-full').style.display = 'inline'; document.getElementById('1111.7249v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.7249v1-abstract-full" style="display: none;"> At present, part of the forward RPC muon system of the CMS detector at the CERN LHC remains uninstrumented in the high-畏region. An international collaboration is investigating the possibility of covering the 1.6 < |畏| < 2.4 region of the muon endcaps with large-area triple-GEM detectors. Given their good spatial resolution, high rate capability, and radiation hardness, these micro-pattern gas detectors are an appealing option for simultaneously enhancing muon tracking and triggering capabilities in a future upgrade of the CMS detector. A general overview of this feasibility study will be presented. The design and construction of small (10\times10 cm2) and full-size trapezoidal (1\times0.5 m2) triple-GEM prototypes will be described. During detector assembly, different techniques for stretching the GEM foils were tested. Results from measurements with x-rays and from test beam campaigns at the CERN SPS will be shown for the small and large prototypes. Preliminary simulation studies on the expected muon reconstruction and trigger performances of this proposed upgraded muon system will be reported. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.7249v1-abstract-full').style.display = 'none'; document.getElementById('1111.7249v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </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, 25 figures, submitted for publication in conference record of the 2011 IEEE Nuclear Science Symposium, Valencia, Spain</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> RD51-Note-2011-012 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1111.4883">arXiv:1111.4883</a> <span> [<a href="https://arxiv.org/pdf/1111.4883">pdf</a>, <a href="https://arxiv.org/ps/1111.4883">ps</a>, <a href="https://arxiv.org/format/1111.4883">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"> Test beam results of the GE1/1 prototype for a future upgrade of the CMS high-$畏$ 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=Bagliesi%2C+M+G">M. G. Bagliesi</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=Cecchi%2C+R">R. Cecchi</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> , 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="1111.4883v4-abstract-short" style="display: inline;"> Gas Electron Multipliers (GEM) are an interesting technology under consideration for the future upgrade of the forward region of the CMS muon system, specifically in the $1.6<| 畏|<2.4$ endcap region. With a sufficiently fine segmentation GEMs can provide precision tracking as well as fast trigger information. The main objective is to contribute to the improvement of the CMS muon trigger. The const… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.4883v4-abstract-full').style.display = 'inline'; document.getElementById('1111.4883v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.4883v4-abstract-full" style="display: none;"> Gas Electron Multipliers (GEM) are an interesting technology under consideration for the future upgrade of the forward region of the CMS muon system, specifically in the $1.6<| 畏|<2.4$ endcap region. With a sufficiently fine segmentation GEMs can provide precision tracking as well as fast trigger information. The main objective is to contribute to the improvement of the CMS muon trigger. The construction of large-area GEM detectors is challenging both from the technological and production aspects. In view of the CMS upgrade we have designed and built the largest full-size Triple-GEM muon detector, which is able to meet the stringent requirements given the hostile environment at the high-luminosity LHC. Measurements were performed during several test beam campaigns at the CERN SPS in 2010 and 2011. The main issues under study are efficiency, spatial resolution and timing performance with different inter-electrode gap configurations and gas mixtures. In this paper results of the performance of the prototypes at the beam tests will be discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.4883v4-abstract-full').style.display = 'none'; document.getElementById('1111.4883v4-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div 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