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

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• 作者：A. Akindinov ; V. Ammosov ; V. Gapienko ; Yu. Grishuk ; F. Guber ; N. Herrmann ; O. Karavichev ; S. Kiselev ; A. Maevskaya ; V. Razin ; et al.
• 关键词：Multi-gap RPC ; Bulk resistivity ; High rate ; TOF ; Time resolution
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2007
• 出版时间：11 March 2007
• 年：2007
• 卷：572
• 期：2
• 页码：676-681
• 全文大小：206 K

文摘

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 , 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 % .