New results from an extensive aging test on bakelite Resistive Plate Chambers

Details New results from an extensive aging test on bakelite Resistive Plate Chambers New results from an extensive aging test on bakelite Resistive Plate Chambers

2003-02-21

arxiv.org/abs/physics/0302077v2

Physics

Instrumentation and Detectors

6 pages, 7 figures, presented at Siena 2002, 8th Topical Seminar on Innovative Particle and Radiation Detectors 21-24 October

Scientific paper

10.1016/S0920-5632(03)91019-X

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.

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