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

Giovanni Carboni·Gianmaria Collazuol·Stefano De Capua·Danilo Domenici·Gerardo Ganis·Roberto Messi·Giovanni Passaleva·Emanuele Santovetti·Michele Veltri
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Abstract

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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Giovanni Carboni, Gianmaria Collazuol, Stefano De Capua, Danilo Domenici, Gerardo Ganis, Roberto Messi, Giovanni Passaleva, Emanuele Santovetti, Michele Veltri. 2003-03-05. New results from an extensive aging test on bakelite Resistive Plate Chambers. https://doi.org/10.1016/s0920-5632(03)91019-x

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