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%.
@article{arxiv.physics/0612083,
title = {RPC with low-resistive phosphate glass electrodes as a candidate for the CBM TOF},
author = {A. Akindinov and V. Ammosov and V. Gapienko and Yu. Grishuk and F. Guber and N. Herrmann and O. Karavichev and S. Kiselev and A. Maevskaya and V. Razin and A. Semak and A. Smirnitskiy and Yu. Sviridov and V. Tiflov and K. Voloshin and V. Zaets and B. Zagreev},
journal= {arXiv preprint arXiv:physics/0612083},
year = {2008}
}