Development of multi-gap resistive plate chambers with low-resistive silicate glass electrodes for operation at high particle fluxes and large transported charges-猫眼课题宝

开发具有低电阻硅酸盐玻璃电极的多间隙电阻板室，用于在高颗粒通量和大传输电荷下运行

DOI：

10.1016/j.nima.2010.04.056

发表时间：

2010-09

期刊：

Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

王景波;王义;李元景

使用半导电玻璃制成的电极是提高电阻板室的速率能力的创新方式。为了解决这个问题，我们开发了6-和10-间隙计数器，具有低电阻的硅酸盐玻璃电极（体电阻率<1010Ωcm），适用于高速率和高传输电荷的飞行时间（TOF）应用。测量是在GSI-Darmstadt进行的，在2.5GeV/A质子反应产生的次级粒子的均匀辐照下进行的。对于10-gap MRPC，在25 kHz/cm ~ 2的计数率下，时间分辨率低于90 ps，效率大于90%。粒子通量每增加5 kHz/cm ~ 2，效率下降1%，时间分辨率下降4ps。对于1C/cm 2的总传输电荷，也观察到材料电导率的可容忍的降低。

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 ∼1010Ωcm) 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 2.5GeV/A. For the 10-gap MRPC, time resolutions below 90ps and efficiencies larger than 90% were obtained at counting rates up to 25kHz/cm2. When the particle flux increases every 5kHz/cm2, the efficiency decreases by 1% and the time resolution deteriorates by 4ps. A tolerable decrease of the material conductivity was also observed for a total transported charge of 1C/cm2.