Study of Thin Double-Gap RPCs for the CMS Muon System

K. S. Lee, S. W. Cho, S. Choi, B. Hong, M. Kang, J. H. Lim, Y. M. Jo, S. K. Park, K. R. Ryoo, R. Aly, S. Aly, Y. Assran, A. Mohamed, A. Mahrous, S. Constantini, M. Abbrescia, A. Gelmi, M. Maggi, G. Iaselli, G. PuglieseA. Sharma, V. Bhatnagar, R. Gupta, P. Kumari, M. Manisha, J. Singh, L. Benussi, S. Bianc, D. Piccolo, F. Primavera, A. Fagot, M. Gul, C. Roskas, M. Tytgat, N. Zagandis, L. Pant, S. Buontempo, A. Buonaura, A. Di Crescenzo, F. Fienga, G. Galati, L. Lista, S. Meola, A. Orso, P. Paolucci, E. Voevodina, H. Hoorani, S. Muhammad, M. Shah, A. Braghieri, P. Montagna, C. Riccardi, P. Salvini, P. Vitulo, Y. Ban, S. Qian, A. Aleksandrov, R. Hadjiiska, P. Iaydjiev, M. Rodozov, G. Soultanov, M. Vutiva, A. Dimitrov, L. Litov, P. Petkov, A. Dimitrov, B. Pavlov, D. Han, Y. Wang, C. Bernal, C. Carrillo Montoya, A. Cabrera Mora, M. Gouzevitch, G. Grenier, F. Lagarde, I. Laktineh, C. Uribe Estrada, J. Eysermans, I. Pedraza, I. Bagaturia, D. Lomidze, I. Lomidze, Z. Tsamalaidze, T. Toriashvili, S. Carrillo Moreno, F. Vazquez Valencia, J. Goh, S. Jeong, T. Kim, I. Yu, C. Hwang, M. Mohammadi, Najafabadi, B. Boghrati, H. Castilla-Valdez, A. Sanchez-Hernandez, I. Crotty

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


High-sensitivity double-gap phenolic resistive plate chambers (RPCs) are studied for the Phase-2 upgrade of the Compact Muon Solenoid (CMS) muon system at high pseudorapidity η. Whereas the present CMS RPCs have a gas gap thickness of 2 mm, we propose to use thinner gas gaps, which will improve the performance of these RPCs. To validate this proposal, we constructed double-gap RPCs with two different gap thicknesses of 1.2 and 1.4 mm by using high-pressure laminated plates having a mean resistivity of about 5 × 1010 Ω-cm. This paper presents test results using cosmic muons and 137Cs gamma rays. The rate capabilities of these thin-gap RPCs measured with the gamma source exceed the maximum rate expected in the new high-η endcap RPCs planned for future Phase-2 runs of the Large Hadron Collider (LHC).

Original languageEnglish
Pages (from-to)1080-1087
Number of pages8
JournalJournal of the Korean Physical Society
Issue number8
Publication statusPublished - 2018 Oct 1

Bibliographical note

Publisher Copyright:
© 2018, The Korean Physical Society.


  • Compact Muon Solenoid
  • Large Hadron Collider
  • Muon triggers
  • Resistive plate chambers

ASJC Scopus subject areas

  • General Physics and Astronomy


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