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

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

2006-12-08

arxiv.org/abs/physics/0612083v1

Nucl.Instrum.Meth.A572:676-681,2007

Physics

Instrumentation and Detectors

8 pages, 6 figures, submitted to Elsevier Science

Scientific paper

10.1016/j.nima.2006.12.027

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 Ohm 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/cm2. The increase in rate from 2.25 to 18 kHz/cm2 leads to an increase of estimated "tails" fraction in the time spectrum from 1.5% to 4%.

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