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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/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/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/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/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/1606.00993">arXiv:1606.00993</a> <span> [<a href="https://arxiv.org/pdf/1606.00993">pdf</a>, <a href="https://arxiv.org/format/1606.00993">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.2016.05.073">10.1016/j.nima.2016.05.073 <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=Gouzevitch%2C+M">Maxime Gouzevitch</a>, <a href="/search/physics?searchtype=author&query=Lagarde%2C+F">Fran莽ois Lagarde</a>, <a href="/search/physics?searchtype=author&query=Laktineh%2C+I">Imad Laktineh</a>, <a href="/search/physics?searchtype=author&query=Buridon%2C+V">Victor Buridon</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+X">Xiushan Chen</a>, <a href="/search/physics?searchtype=author&query=Combaret%2C+C">Christophe Combaret</a>, <a href="/search/physics?searchtype=author&query=Eynard%2C+A">Alexis Eynard</a>, <a href="/search/physics?searchtype=author&query=Germani%2C+L">Lionel Germani</a>, <a href="/search/physics?searchtype=author&query=Grenier%2C+G">Gerald Grenier</a>, <a href="/search/physics?searchtype=author&query=Mathez%2C+H">Herv茅 Mathez</a>, <a href="/search/physics?searchtype=author&query=Mirabito%2C+L">Laurent Mirabito</a>, <a href="/search/physics?searchtype=author&query=Petrukhin%2C+A">Alexei Petrukhin</a>, <a href="/search/physics?searchtype=author&query=Steen%2C+A">Arnaud Steen</a>, <a href="/search/physics?searchtype=author&query=Tromeur%2C+W">William Tromeur</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+Y">Yi Wang</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+F">Fuyue Wang</a>, <a href="/search/physics?searchtype=author&query=Moreau%2C+N">Nathalie Moreau</a>, <a href="/search/physics?searchtype=author&query=de+la+Taille%2C+C">Christophe de la Taille</a>, <a href="/search/physics?searchtype=author&query=Dulucq%2C+F">Fr茅deric Dulucq</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="1606.00993v1-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 $6 \cdot 10^{34}$ cm$^{-2}$s$^{-1}$. The region of the forward muon spectrometer ($|畏| > 1.6$) is not equipped with RPC stations. The increase of t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.00993v1-abstract-full').style.display = 'inline'; document.getElementById('1606.00993v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.00993v1-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 $6 \cdot 10^{34}$ 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. A new generation Glass-RPC (GRPC) using low resistivity glass (LR) is proposed to equip at least the two most far away of the four high eta muon stations of CMS. The design of small size prototypes and the studies of their performances under high rate particles flux is presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.00993v1-abstract-full').style.display = 'none'; document.getElementById('1606.00993v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 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">5 pages, 5 figures, proceeding for the conference VCI 2016</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Instruments & Methods in Physics Research A (2016) </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> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 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