RPC with low-resistive phosphate glass electrodes as a candidate for the CBM TOF

Abstract Usage of electrodes made of glass with low bulk resistivity seems to be a promising way to adapt the Resistive Plate Chambers (RPC) to the high-rate environment of the upcoming CBM experiment. A pilot four-gap RPC sample with electrodes made of phosphate glass, which has bulk resistivity in the order of 10 10 Ω cm , has been studied with MIP beam for TOF applications. The tests have yielded satisfactory results: the efficiency remains above 95% and the time resolution stays within 120 ps up to the particle rate of 18 kHz/cm 2 . The increase in rate from 2.25 to 18 kHz/cm 2 leads to an increase of estimated tails fraction in the time spectrum from 1.5% to 4%.