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Highly efficient resistive plate chambers for high rate environment

1999; Elsevier BV; Volume: 78; Issue: 1-3 Linguagem: Inglês

10.1016/s0920-5632(99)00583-6

1873-3832

M. Ćwiok, W. Dominik, M. Górski, J. Królikowski,

Radiation Effects in Electronics

The full scale prototype of an Inverted Double Gap RPC module for ME-1/1 station of the CMS detector was tested in the Gamma Irradiation Facility at the CERN SPS muon beam. The chamber made of medium resistivity bakelite and filled with “green gas” mixture of C2H2F4/iso-butane/SF6 has wide efficiency plateau and good timing properties when operated in avalanche mode under continuous irradiation with strong 137Cs source for rates up to about 5 kHz/cm2/gap.