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.
@article{arxiv.physics/0302029,
title = {First results from an aging test of a prototype RPC for the LHCb Muon System},
author = {Andrea Bizzeti and Giovanni Carboni and Gianmaria Collazuol and Stefano De Capua and Danilo Domenici and Gerardo Ganis and Roberto Messi and Giovanni Passaleva and Emanuele Santovetti and Michele Veltri},
journal= {arXiv preprint arXiv:physics/0302029},
year = {2015}
}
Comments
6 pages, 9 figures, presented at the International Workshop on Aging Phenomena in Gaseous Detectors'', DESY-Hamburg (Germany), October 2001