. in s - de t ] 2 1 Fe b 20 03 1 New results from an extensive aging test on bakelite Resistive Plate

نویسندگان

  • G. Carboni
  • G. Collazuol
  • S. De Capua
  • D. Domenici
  • G. Ganis
  • R. Messi
  • G. Passaleva
  • E. Santovetti
  • M. Veltri
چکیده

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 MΩ to more than 250 MΩ. A corresponding degradation of the RPC rate capabilities, from more than 3 kHz/cm 2 to less than 0.15 kHz/cm 2 is also found.

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تاریخ انتشار 2003