Development of multi-gap resistive plate chambers with low-resistive silicate glass electrodes for operation at high particle fluxes and large transported charges
✍ Scribed by Jingbo Wang; Yi Wang; Xianglei Zhu; Weicheng Ding; Yuanjing Li; Jianping Cheng; Nobert Herrmann; Ingo Deppner; Yapeng Zhang; P. Loizeau; P. Senger; D. Gonzalez-Diaz
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 1003 KB
- Volume
- 621
- Category
- Article
- ISSN
- 0168-9002
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✦ Synopsis
Using electrodes made of semi-conductive glass is an innovative way of improving the rate capability of resistive plate chambers. To address this issue, we developed 6-and 10-gap counters with low-resistive silicate glass electrodes (bulk resistivity $ 10 10 O cm) suited for time-of-flight (TOF) applications at high rates and high transported charges. Measurements were performed at GSI-Darmstadt under uniform an irradiation by secondary particles stemming from proton reactions at 2.5 GeV/A. For the 10-gap MRPC, time resolutions below 90 ps and efficiencies larger than 90% were obtained at counting rates up to 25 kHz/cm 2 . When the particle flux increases every 5 kHz/cm 2 , the efficiency decreases by 1% and the time resolution deteriorates by 4 ps. A tolerable decrease of the material conductivity was also observed for a total transported charge of 1 C/cm 2 .