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“School of Particles And Accelerator”

Paper   IPM / Particles And Accelerator / 15771
   School of Particles and Accelerator
  Title: Longevity studies on the CMS-RPC system
  Author(s):
1 . Vahid Amoozegar
2 . Behzad Boghrati
3 . Hanieh Ghasemy
4 . Sahar Malmir
5 . Mojtaba Mohammadi Najafabadi
6 . CMS RPC Collaboration
  Status: Published
  Journal: JINST
  No.: 05, C05012
  Vol.: 14
  Year: 2019
  Supported by: IPM
  Abstract:
In the next decades, the Large Hadron Collider (LHC) will run at very high luminosity (HL-LHC) 5*1034 cm-2s-1, factor five more than the nominal LHC luminosity. During this period the CMS RPC system will be subjected to high background rates which could affect the performance by inducing aging effects. A dedicated longevity program to qualify the present RPC system for the HL-LHC running period is ongoing. At the CERN Gamma Irradiation Facility (GIF++) four RPC detectors, from the spare production, are exposed to an intense gamma radiation for a dose equivalent to the one expected at the HL-LHC . The main detector parameters are under monitoring as a function of the integrated charge and the performance is studied with a muon beam. Preliminary results of the study after having collected 34 of the expected integrated charge will be presented.

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