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Layout and assembly technique of the GEM chambers for the upgrade of the CMS first muon endcap station

  • D. Abbaneo
  • , M. Abbas
  • , M. Abbrescia
  • , H. Abdalla
  • , A. Ahmad
  • , A. Ahmed
  • , W. Ahmed
  • , C. Ali
  • , I. Asghar
  • , P. Aspell
  • , Y. Assran
  • , C. Avila
  • , Y. Ban
  • , R. Band
  • , S. Bansal
  • , G. Bencze
  • , N. Beni
  • , L. Benussi
  • , V. Bhatnagar
  • , V. Bhopatkar
  • M. Bianco, S. Bianco, L. Borgonovi, O. Bouhali, A. Braghieri, S. Braibant-Giacomelli, C. Bravo, V. Cafaro, C. Calabria, C. Salazar, M. Caponero, F. Cassese, A. Hernandez, F. Cavallo, N. Cavallo, Y. Choi, S. Colafranceschi, A. Colaleo, A. Conde Garcia, M. Dalchenko, G. De Lentdecker, D. Dell Olio, G. De Robertis, S. Dildick, B. Dorney, G. Endroczi, R. Erbacher, F. Errico, F. Fallavollita, E. Fontanesi, M. Franco, P. Giacomelli, S. Gigli, J. Gilmore, V. Giordano, M. Gola, M. Gruchala, L. Guiducci, R. Gupta, A. Gutierrez, R. Hadjiiska, T. Hakkarainen, J. Hauser, C. Heidemann, K. Hoepfner, M. Hohlmann, H. Hoorani, H. Huang, Q. Huang, T. Huang, P. Iaydjiev, Y. Inseok, A. Irshad, Y. Jeng, V. Jha, A. Juodagalvis, E. Juska, T. Kamon, P. Karchin, A. Kaur, H. Keller, W. Khan, J. Kim, H. Kim, R. King, A. Kumar, P. Kumari, N. Lacalamita, J. Lee, T. Lenzi, A. Leonard, A. Levin, Q. Li, F. Licciulli, L. Litov, F. Loddo, M. Lohan, M. Maggi, A. Magnani, N. Majumdar, S. Malhotra, A. Marinov, S. Martirodonna, N. McColl, C. McLean, J. Merlin, D. Mishra, G. Mocellin, S. Mohamed, T. Mohamed, J. Molnar, L. Moureaux, S. Muhammad, S. Mukhopadhyay, S. Murtaza, M. Naimuddin, N. Vanegas, P. Netrakanti, S. Nuzzo, R. Oliveira, L. Pant, P. Paolucci, I. Park, L. Passamonti, G. Passeggio, C. Pastore, B. Pavlov, A. Peck, H. Petrow, B. Philipps, D. Piccolo, D. Pierluigi, F. Primavera, R. Radogna, G. Raffone, M. Rahmani, A. Ranieri, V. Rapsevicius, G. Rashevski, M. Ressegotti, C. Riccardi, M. Rodozov, E. Romano, C. Roskas, P. Rout, A. Russo, A. Safonov, D. Saltzberg, G. Saviano, A. H. Shah*, A. Sharma, R. Sharma, M. Shopova, F. Simone, J. B. Singh, E. Soldani, E. Starling, J. Sturdy, A. Sultan, G. Sultanov, Z. Szillasi, F. Thyssen, T. Tuuva, M. Tytgat, B. Ujvari, I. Vai, R. Venditti, P. Verwilligen, P. Vitulo, D. Wang, Y. Yang, U. Yang, R. Yonamine, I. Yu, S. Zaleski
*Corresponding author for this work
  • CERN
  • National Institute for Nuclear Physics
  • Academy of Scientific Research and Technology
  • National Center for Physics
  • University of Delhi
  • Texas A&M University at Qatar
  • Universidad de los Andes Colombia
  • Peking University
  • University of California at Davis
  • Panjab University
  • Institute for Nuclear Research
  • Florida Institute of Technology
  • University of California at Los Angeles
  • Universidad de Antioqui
  • University of Naples Federico II
  • Texas A&M University
  • Korea University
  • Université libre de Bruxelles
  • Wayne State University
  • Bulgarian Academy of Sciences
  • Lappeenranta-Lahti University of Technology
  • RWTH Aachen University
  • Seoul National University
  • University of Seoul
  • Bhabha Atomic Research Centre
  • Vilnius University
  • Sofia University St. Kliment Ohridski
  • Saha Institute of Nuclear Physics
  • Ghent University

Research output: Contribution to journalArticlepeer-review

Abstract

Triple-GEM detector technology was recently selected by CMS for a part of the upgrade of its forward muon detector system as GEM detectors provide a stable operation in the high radiation environment expected during the future High-Luminosity phase of the Large Hadron Collider (HL-LHC). In a first step, GEM chambers (detectors) will be installed in the innermost muon endcap station in the 1.6<η<2.2 pseudo-rapidity region, mainly to control level-1 muon trigger rates after the second LHC Long Shutdown. These new chambers will add redundancy to the muon system in the η-region where the background rates are high, and the bending of the muon trajectories due to the CMS magnetic field is small. A novel construction technique for such chambers has been developed in such a way where foils are mounted onto a single stack and then uniformly stretched mechanically, avoiding the use of spacers and glue inside the active gas volume. We describe the layout, the stretching mechanism and the overall assembly technique of such GEM chambers.

Original languageEnglish
Pages (from-to)67-75
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume918
DOIs
Publication statusPublished - 21 Feb 2019
Externally publishedYes

Keywords

  • CMS
  • GEM
  • High Luminosity LHC

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