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Improved-RPC for the CMS muon system upgrade for the HL-LHC

Authors
Kumari, P.Lee, K. S.Gelmi, A.Shchablo, K.Samalan, A.Tytgat, M.Zaganidis, N.Alves, G. A.Marujo, F.Da Silva De Araujo, F. TorresDa Costa, E. M.Damiao, D. De JesusNogima, H.Santoro, A.De Souza, S. FonsecaAleksandrov, A.Hadjiiska, R.Iaydjiev, P.Rodozov, M.Shopova, M.Soultanov, G.Bonchev, M.Dimitrov, A.Litov, L.Pavlov, B.Petkov, P.Petrov, A.Qian, S. J.Cao, P.Kou, H.Liu, Z.Song, J.Zhao, J.Bernal, C.Cabrera, A.Fraga, J.Sarkar, A.Elsayed, S.Assran, Y.El Sawy, M.Mahmoud, M. A.Mohammed, Y.Chen, X.Combaret, C.Gouzevitch, M.Grenier, G.Laktineh, IMirabito, L.Bagaturia, ILomidze, D.Lomidze, IBhatnagar, VGupta, R.Kumari, P.Singh, J.Amoozegar, VBoghrati, B.Ebraimir, M.Ghasemi, R.Najafabadi, M. MohammadiZareian, E.Abbrescia, M.Aly, R.Elmetenawee, W.De Filippis, N.Iaselli, G.Leszki, S.Loddo, F.Margjeka, IPugliese, G.Ramos, D.Benussi, L.Bianco, S.Piccolo, D.Buontempo, S.Di Crescenzo, A.Fienga, F.De Lellis, G.Lista, L.Meola, S.Paolucci, P.Braghieri, A.Salvini, P.Montagna, P.Riccardi, C.Vitulo, P.Francois, B.Kim, T. J.Park, J.Choi, S. Y.Hong, B.Goh, J.Lee, H.Eysermans, J.Uribe Estrada, C.Pedraza, ICastilla-Valdez, H.Sanchez-Hernandez, A.Mondragon Herrera, C. A.Perez Navarro, D. A.Ayala Sanchez, G. A.Carrillo, S.Vazquez, E.Radi, A.Ahmad, A.Asghar, IHoorani, H.Muhammad, S.Shah, M. A.Crotty, I
Issue Date
11월-2020
Publisher
IOP PUBLISHING LTD
Keywords
Front-end electronics for detector readout; Gaseous detectors; Radiation-hard electronics; Resistive-plate chambers
Citation
JOURNAL OF INSTRUMENTATION, v.15, no.11
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF INSTRUMENTATION
Volume
15
Number
11
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/51909
DOI
10.1088/1748-0221/15/11/C11012
ISSN
1748-0221
Abstract
During Phase-2 of the LHC, known as the High Luminosity LHC (HL-LHC), the accelerator will increase its instantaneous luminosity to 5 x 10(34) cm(-2) s(-1), delivering an integrated luminosity of 3000 fb(-1) over 10 years of operation starting from 2027. In view of the HL-LHC, the CMS muon system will be upgraded to sustain efficient muon triggering and reconstruction performance. Resistive Plate Chambers (RPCs) serve as dedicated detectors for muon triggering due to their excellent timing resolution, and will extend the acceptance up to pseudorapidity values of vertical bar eta vertical bar = 2.4. Before Long Shutdown 3 (LS3), the RE3/1 and RE4/1 stations of the endcap will be equipped with new improved Resistive Plate Chambers (iRPCs) having different design and geometry than the present RPC system. The iRPC geometry configuration improves the detector's rate capability and its ability to survive the harsh background conditions of the HL-LHC. Also, new electronics with excellent timing performances (time resolution of less than 150 ps) are developed to read out the RPC detectors from both sides of the strips to allow for good spatial resolution along them. The performance of the iRPC has been studied with gamma radiation at the Gamma Irradiation Facility (GIF++) at CERN. Ongoing longevity studies will help to certify the iRPCs for the HL-LHC running period. The main detector parameters such as the current, rate and resistivity are regularly monitored as a function of the integrated charge. Preliminary results of the detector performance will be presented.
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