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Latest results of Longevity studies on the present CMS RPC system for HL-LHC phase

  • CMS Muon Group
  • Helwan University
  • National Institute for Nuclear Physics
  • Massachusetts Institute of Technology
  • Ghent University
  • Université libre de Bruxelles
  • Centro Brasileiro de Pesquisas Físicas
  • Universidade do Estado do Rio de Janeiro
  • Bulgarian Academy of Sciences
  • Sofia University St. Kliment Ohridski
  • Peking University
  • CAS - Institute of High Energy Physics
  • University of Chinese Academy of Sciences
  • Universidad de los Andes Colombia
  • The British University in Egypt
  • Suez University
  • Al-Fayoum University
  • Universite Claude Bernard Lyon 1

Research output: Contribution to journalArticlepeer-review

Abstract

The present Compact Muon Solenoid Resistive Plate Chambers system has been worked efficiently during Run I and Run II of data taking period (Shah et al., 2020) [1]. In the coming years of operation with the High Luminosity LHC (HL-LHC), the expected rate and integrated charge are expected to be about 600 Hz/cm2 and 840 mC/cm2, respectively (including a safety factor of three). Therefore, the HL-LHC phase will be a challenge for the RPC system since the expected operating conditions are much harsher than those for which the detectors have been designed, and could introduce non-recoverable aging effects which can alter the detector properties. A longevity test has been started at the CERN Gamma Irradiation Facility to estimate the impact of HL-LHC conditions on the RPC detector performance in order to determine whether the RPC system will survive the harsher background conditions expected at HL-LHC. The latest results of the irradiation test will be presented.

Keywords

  • Aging
  • CMS
  • HL-LHC
  • RPC

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