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

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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.
Keywords
Front-end electronics for detector readout, Gaseous detectors, Radiation-hard electronics, Resistive-plate chambers

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MLA
Kumari, P., et al. “Improved-RPC for the CMS Muon System Upgrade for the HL-LHC.” JOURNAL OF INSTRUMENTATION, vol. 15, no. 11, Iop Publishing Ltd, 2020, doi:10.1088/1748-0221/15/11/C11012.
APA
Kumari, P., Lee, K. S., Gelmi, A., Shchablo, K., Samalan, A., Tytgat, M., … Crotty, I. (2020). Improved-RPC for the CMS muon system upgrade for the HL-LHC. JOURNAL OF INSTRUMENTATION, 15(11). https://doi.org/10.1088/1748-0221/15/11/C11012
Chicago author-date
Kumari, P., K. S. Lee, A. Gelmi, K. Shchablo, A. Samalan, Michael Tytgat, Nikolaos Zaganidis, et al. 2020. “Improved-RPC for the CMS Muon System Upgrade for the HL-LHC.” JOURNAL OF INSTRUMENTATION 15 (11). https://doi.org/10.1088/1748-0221/15/11/C11012.
Chicago author-date (all authors)
Kumari, P., K. S. Lee, A. Gelmi, K. Shchablo, A. Samalan, Michael Tytgat, Nikolaos Zaganidis, G. A. Alves, F. Marujo, F. Torres Da Silva De Araujo, E. M. Da Costa, D. De Jesus Damiao, H. Nogima, A. Santoro, S. Fonseca De Souza, A. Aleksandrov, R. Hadjiiska, P. Iaydjiev, M. Rodozov, M. Shopova, G. Soultanov, M. Bonchev, A. Dimitrov, L. Litov, B. Pavlov, P. Petkov, A. Petrov, S. J. Qian, P. Cao, H. Kou, Z. Liu, J. Song, J. Zhao, C. Bernal, A. Cabrera, J. Fraga, A. Sarkar, S. Elsayed, Y. Assran, M. El Sawy, M. A. Mahmoud, Y. Mohammed, X. Chen, C. Combaret, M. Gouzevitch, G. Grenier, I Laktineh, L. Mirabito, I Bagaturia, D. Lomidze, I Lomidze, V Bhatnagar, R. Gupta, P. Kumari, J. Singh, V Amoozegar, B. Boghrati, M. Ebraimir, R. Ghasemi, M. Mohammadi Najafabadi, E. Zareian, M. Abbrescia, R. Aly, W. Elmetenawee, N. De Filippis, G. Iaselli, S. Leszki, F. Loddo, I Margjeka, G. Pugliese, D. Ramos, L. Benussi, S. Bianco, D. Piccolo, S. Buontempo, A. Di Crescenzo, F. Fienga, G. De Lellis, L. Lista, S. Meola, P. Paolucci, A. Braghieri, P. Salvini, P. Montagna, C. Riccardi, P. Vitulo, B. Francois, T. J. Kim, J. Park, S. Y. Choi, B. Hong, J. Goh, H. Lee, J. Eysermans, C. Uribe Estrada, I Pedraza, H. Castilla-Valdez, A. Sanchez-Hernandez, C. A. Mondragon Herrera, D. A. Perez Navarro, G. A. Ayala Sanchez, S. Carrillo, E. Vazquez, A. Radi, A. Ahmad, I Asghar, H. Hoorani, S. Muhammad, M. A. Shah, and I Crotty. 2020. “Improved-RPC for the CMS Muon System Upgrade for the HL-LHC.” JOURNAL OF INSTRUMENTATION 15 (11). doi:10.1088/1748-0221/15/11/C11012.
Vancouver
1.
Kumari P, Lee KS, Gelmi A, Shchablo K, Samalan A, Tytgat M, et al. Improved-RPC for the CMS muon system upgrade for the HL-LHC. JOURNAL OF INSTRUMENTATION. 2020;15(11).
IEEE
[1]
P. Kumari et al., “Improved-RPC for the CMS muon system upgrade for the HL-LHC,” JOURNAL OF INSTRUMENTATION, vol. 15, no. 11, 2020.
@article{8702597,
  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.}},
  articleno    = {{C11012}},
  author       = {{Kumari, P. and Lee, K. S. and Gelmi, A. and Shchablo, K. and Samalan, A. and Tytgat, Michael and Zaganidis, Nikolaos and Alves, G. A. and Marujo, F. and Da Silva De Araujo, F. Torres and Da Costa, E. M. and Damiao, D. De Jesus and Nogima, H. and Santoro, A. and De Souza, S. Fonseca and Aleksandrov, A. and Hadjiiska, R. and Iaydjiev, P. and Rodozov, M. and Shopova, M. and Soultanov, G. and Bonchev, M. and Dimitrov, A. and Litov, L. and Pavlov, B. and Petkov, P. and Petrov, A. and Qian, S. J. and Cao, P. and Kou, H. and Liu, Z. and Song, J. and Zhao, J. and Bernal, C. and Cabrera, A. and Fraga, J. and Sarkar, A. and Elsayed, S. and Assran, Y. and El Sawy, M. and Mahmoud, M. A. and Mohammed, Y. and Chen, X. and Combaret, C. and Gouzevitch, M. and Grenier, G. and Laktineh, I and Mirabito, L. and Bagaturia, I and Lomidze, D. and Lomidze, I and Bhatnagar, V and Gupta, R. and Kumari, P. and Singh, J. and Amoozegar, V and Boghrati, B. and Ebraimir, M. and Ghasemi, R. and Najafabadi, M. Mohammadi and Zareian, E. and Abbrescia, M. and Aly, R. and Elmetenawee, W. and De Filippis, N. and Iaselli, G. and Leszki, S. and Loddo, F. and Margjeka, I and Pugliese, G. and Ramos, D. and Benussi, L. and Bianco, S. and Piccolo, D. and Buontempo, S. and Di Crescenzo, A. and Fienga, F. and De Lellis, G. and Lista, L. and Meola, S. and Paolucci, P. and Braghieri, A. and Salvini, P. and Montagna, P. and Riccardi, C. and Vitulo, P. and Francois, B. and Kim, T. J. and Park, J. and Choi, S. Y. and Hong, B. and Goh, J. and Lee, H. and Eysermans, J. and Uribe Estrada, C. and Pedraza, I and Castilla-Valdez, H. and Sanchez-Hernandez, A. and Mondragon Herrera, C. A. and Perez Navarro, D. A. and Ayala Sanchez, G. A. and Carrillo, S. and Vazquez, E. and Radi, A. and Ahmad, A. and Asghar, I and Hoorani, H. and Muhammad, S. and Shah, M. A. and Crotty, I}},
  issn         = {{1748-0221}},
  journal      = {{JOURNAL OF INSTRUMENTATION}},
  keywords     = {{Front-end electronics for detector readout,Gaseous detectors,Radiation-hard electronics,Resistive-plate chambers}},
  language     = {{eng}},
  location     = {{Univ Rome Tor Vergata, Rome, ITALY}},
  number       = {{11}},
  pages        = {{11}},
  publisher    = {{Iop Publishing Ltd}},
  title        = {{Improved-RPC for the CMS muon system upgrade for the HL-LHC}},
  url          = {{http://dx.doi.org/10.1088/1748-0221/15/11/C11012}},
  volume       = {{15}},
  year         = {{2020}},
}

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