CERN Accelerating science

Article
Report number arXiv:1812.00411
Title Layout and Assembly Technique of the GEM Chambers for the Upgrade of the CMS First Muon Endcap Station
Author(s)

Abbaneo, D. (CERN) ; Abbas, M. (CERN) ; Abbrescia, M. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Abdalla, H. (Cairo, Acad. Sci. Res. Tech.) ; Ahmad, A. (NCP, Islamabad) ; Ahmed, A. (Delhi U.) ; Ahmed, W. (NCP, Islamabad) ; Ali, C. (Texas A&M U. Qatar, Doha) ; Asghar, I. (NCP, Islamabad) ; Aspell, P. (CERN) ; Assran, Y. (Cairo, Acad. Sci. Res. Tech.) ; Avila, C. (Andes U., Bogota) ; Ban, Y. (Peking U.) ; Band, R. (UC, Davis) ; Bansal, S. (Panjab U., Chandigarh) ; Bencze, G. (Debrecen, Inst. Nucl. Res.) ; Beni, N. (Debrecen, Inst. Nucl. Res.) ; Benussi, L. (Frascati) ; Bhatnagar, V. (Panjab U., Chandigarh) ; Bhopatkar, V. (Florida Inst. Tech.) ; Bianco, M. (CERN) ; Bianco, S. (Frascati) ; Borgonovi, L. (Bologna U. ; INFN, Bologna) ; Bouhali, O. (Texas A&M U. Qatar, Doha) ; Braghieri, A. (Pavia U. ; INFN, Pavia) ; Braibant-Giacomelli, S. (Bologna U. ; INFN, Bologna) ; Bravo, C. (UCLA) ; Cafaro, V. (Bologna U. ; INFN, Bologna) ; Calabria, C. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Salazar, C. (Unlisted, ES) ; Caponero, M. (Frascati) ; Cassese, F. (Naples U. ; INFN, Naples) ; Hernandez, A. (Texas A-M) ; Cavallo, F. (Bologna U. ; INFN, Bologna) ; Cavallo, N. (Naples U. ; INFN, Naples) ; Choi, Y. (Korea U.) ; Colafranceschi, S. (Florida Inst. Tech.) ; Colaleo, A. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Conde Garcia, A. (CERN) ; Dalchenko, M. (Texas A-M) ; De Lentdecker, G. (Brussels U.) ; Olio, D. Dell (Bari Polytechnic ; Bari U. ; INFN, Bari) ; De Robertis, G. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Dildick, S. (Texas A-M) ; Dorney, B. (Brussels U.) ; Endroczi, G. (Debrecen, Inst. Nucl. Res.) ; Erbacher, R. (UC, Davis) ; Errico, F. (Bari Polytechnic ; Bari U.) ; Fallavollita, F. (CERN) ; Fallavollita, F. (Pavia U. ; INFN, Pavia) ; Fontanesi, E. (Bologna U.) ; Franco, M. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Giacomelli, P. (Bologna U. ; INFN, Bari) ; Gigli, S. (Pavia U. ; INFN, Pavia) ; Gilmore, J. (Texas A-M) ; Giordano, V. (Bologna U. ; INFN, Bologna) ; Gola, M. (Delhi U.) ; Gruchala, M. (CERN) ; Guiducci, L. (Bologna U. ; INFN, Bologna) ; Gupta, R. (Panjab U., Chandigarh) ; Gutierrez, A. (Wayne State U., Detroit) ; Hadjiiska, R. (Sofiya, Inst. Nucl. Res.) ; Hakkarainen, T. (Lappeenranta U. Tech.) ; Hauser, J. (UCLA) ; Heidemann, C. (RWTH Aachen U.) ; Hoepfner, K. (RWTH Aachen U.) ; Hohlmann, M. (Florida Inst. Tech.) ; Hoorani, H. (NCP, Islamabad) ; Huang, H. (Peking U.) ; Huang, Q. (Peking U.) ; Huang, T. (Texas A-M) ; Iaydjiev, P. (Sofiya, Inst. Nucl. Res.) ; Inseok, Y. (Seoul Natl. U.) ; Irshad, A. (NCP, Islamabad) ; Jeng, Y. (Seoul U.) ; Jha, V. (Bhabha Atomic Res. Ctr.) ; Juodagalvis, A. (Vilnius U.) ; Juska, E. (Texas A-M) ; Kamon, T. (Texas A-M) ; Karchin, P. (Wayne State U., Detroit) ; Kaur, A. (Panjab U., Chandigarh) ; Keller, H. (RWTH Aachen U.) ; Khan, W. (Naples U. ; INFN, Naples) ; Kim, J. (Seoul Natl. U.) ; Kim, H. (Seoul U.) ; King, R. (Texas A-M) ; Kumar, A. (Delhi U.) ; Kumari, P. (Panjab U., Chandigarh) ; Lacalamita, N. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Lee, J. (Seoul U.) ; Lenzi, T. (Brussels U.) ; Leonard, A. (Brussels U.) ; Levin, A. (Peking U.) ; Li, Q. (Peking U.) ; Licciulli, F. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Litov, L. (Sofiya U.) ; Loddo, F. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Lohan, M. (Panjab U., Chandigarh) ; Maggi, M. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Magnani, A. (Pavia U. ; INFN, Pavia) ; Majumdar, N. (Saha Inst.) ; Malhotra, S. (Delhi U.) ; Marinov, A. (Brussels U.) ; Martirodonna, S. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; McColl, N. (UCLA) ; McLean, C. (UC, Davis) ; Merlin, J. (CERN) ; Mishra, D. (Bhabha Atomic Res. Ctr.) ; Mocellin, G. (RWTH Aachen U.) ; Mohamed, S. (Cairo, Acad. Sci. Res. Tech.) ; Mohamed, T. (Texas A&M U. Qatar, Doha) ; Molnar, J. (Debrecen, Inst. Nucl. Res.) ; Moureaux, L. (Brussels U.) ; Muhammad, S. (NCP, Islamabad) ; Mukhopadhyay, S. (Saha Inst.) ; Murtaza, S. (NCP, Islamabad) ; Naimuddin, M. (Delhi U.) ; Vanegas, N. (Unlisted, ES) ; Netrakanti, P. (Bhabha Atomic Res. Ctr.) ; Nuzzo, S. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Oliveira, R. (CERN) ; Pant, L. (Bhabha Atomic Res. Ctr.) ; Paolucci, P. (Naples U. ; INFN, Naples) ; Park, I. (Seoul U.) ; Passamonti, L. (Frascati) ; Passeggio, G. (Naples U. ; INFN, Naples) ; Pastore, C. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Pavlov, B. (Sofiya U.) ; Peck, A. (UCLA) ; Petrow, H. (Lappeenranta U. Tech.) ; Philipps, B. (RWTH Aachen U.) ; Piccolo, D. (Frascati) ; Pierluigi, D. (Frascati) ; Primavera, F. (Frascati) ; Radogna, R. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Raffone, G. (Frascati) ; Rahmani, M. (Florida Inst. Tech.) ; Ranieri, A. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Rapsevicius, V. (Vilnius U.) ; Rashevski, G. (Sofiya, Inst. Nucl. Res.) ; Ressegotti, M. (Pavia U. ; INFN, Pavia) ; Riccardi, C. (Pavia U. ; INFN, Pavia) ; Rodozov, M. (Sofiya, Inst. Nucl. Res.) ; Romano, E. (Pavia U. ; INFN, Pavia) ; Roskas, C. (Gent U.) ; Rout, P. (Saha Inst.) ; Russo, A. (Frascati) ; Safonov, A. (Texas A-M) ; Saltzberg, D. (UCLA) ; Saviano, G. (Frascati) ; Shah, A.H. (Delhi U.) ; Sharma, A. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Sharma, A. (CERN) ; Sharma, R. (Delhi U.) ; Shopova, M. (Sofiya, Inst. Nucl. Res.) ; Simone, F. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Singh, J.B. (Panjab U., Chandigarh) ; Soldani, E. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Starling, E. (Brussels U.) ; Sturdy, J. (Wayne State U., Detroit) ; Sultan, A. (NCP, Islamabad) ; Sultanov, G. (Sofiya, Inst. Nucl. Res.) ; Szillasi, Z. (Debrecen, Inst. Nucl. Res.) ; Thyssen, F. (Naples U. ; INFN, Naples) ; Tuuva, T. (Lappeenranta U. Tech.) ; Tytgat, M. (Gent U.) ; Ujvari, B. (Debrecen, Inst. Nucl. Res.) ; Vai, I. (Pavia U. ; INFN, Pavia) ; Venditti, R. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Verwilligen, P. (Bari Polytechnic ; Bari U. ; INFN, Bari) ; Vitulo, P. (Pavia U. ; INFN, Pavia) ; Wang, D. (Peking U.) ; Yang, Y. (Brussels U.) ; Yang, U. (Seoul Natl. U.) ; Yonamine, R. (Brussels U.) ; Yu, I. (Korea U.) ; Zaleski, S. (Wayne State U., Detroit)

Publication 2018-11-28
Imprint 2018-09-04
Number of pages 9
Note 23 pages, 24 figures
In: Nucl. Instrum. Meth. A 918 (2019) 67-75
DOI 10.1016/j.nima.2018.11.061 (publication)
Subject category physics.ins-det ; Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
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 $1.6<\left|\eta\right|<2.2$ 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 $\eta$-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.
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Publication: © 2018 Elsevier B.V. All rights reserved



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