“School of Particles And Accelerator”
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| Paper IPM / Particles And Accelerator / 15771 |
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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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