We present recent results of an extensive aging test, performed at the CERN Gamma Irradiation Facility on two single--gap RPC prototypes, developed for the LHCb Muon System. With a method based on a model describing the behaviour of an RPC under high particle flux conditions, we have periodically measured the electrode resistance R of the two RPC prototypes over three years: we observe a large spontaneous increase of R with time, from the initial value of about 2 MOhm to more than 250 MOhm. A corresponding degradation of the RPC rate capabilities, from more than 3 kHz/cm2 to less than 0.15 kHz/cm2 is also found.
@article{arxiv.physics/0302077,
title = {New results from an extensive aging test on bakelite Resistive Plate Chambers},
author = {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/0302077},
year = {2009}
}
Comments
6 pages, 7 figures, presented at Siena 2002, 8th Topical Seminar on Innovative Particle and Radiation Detectors 21-24 October 2002, Siena, Italy