Author/Authors :
Bizzeti، نويسنده , , A. and Carboni، نويسنده , , Maria G. and Collazuol، نويسنده , , G. and De Capua، نويسنده , , S. and Domenici، نويسنده , , D. and Ganis، نويسنده , , G. and Messi، نويسنده , , R. and Passaleva، نويسنده , , G. and Santovetti، نويسنده , , E. P. Veltri، نويسنده , , M.، نويسنده ,
Abstract :
Recent results of an aging test performed at the CERN Gamma Irradiation Facility on a single-gap RPC prototype developed for the LHCb Muon System are presented. The results are based on an accumulated charge of about 0.45 C/cm2, corresponding to about 4 years of LHCb running at the highest background rate. The performance of the chamber has been studied, under several photon flux values, exploiting a muon beam. A degradation of the rate capability above 1 kHz/cm2 is observed, which can be correlated to a sizeable increase of resistivity of the chamber plates. An increase of the chamber dark current is also observed. The chamber performance is found to fulfill the LHCb operation requirements.
Keywords :
RPC , resistivity , LHCB , aging
