基于MRS APD光读出闪烁计数器的多通道宇宙μ介子系统的长期运行
Long-term operation of a multi-channel cosmic muon system based on scintillation counters with MRS APD light readout
摘要：
宇宙射线测试设施（CRTF）是第一个大规模实施的闪烁触发系统的基础上，一个新的闪烁技术称为START。在START中，闪烁光由WLS光纤收集和传输，而光检测由具有在盖革模式（MRS APD）下操作的金属-电阻器-半导体结构的雪崩光电二极管对执行。START提供100%的宇宙μ子探测效率，而其固有噪声水平小于10^{-2} Hz。CRTF由160个START通道组成，已经由ALICE TOF协作组连续运行了25000多个小时，并表现出高度的稳定性。在此期间，必须更换的MRS APD不到10%。
英文摘要：
A Cosmic Ray Test Facility (CRTF) is the first large-scale implementation of a scintillation triggering system based on a new scintillation technique known as START. In START, the scintillation light is collected and transported by WLS optical fibers, while light detection is performed by pairs of avalanche photodiodes with the Metal-Resistor-Semiconductor structure operated in the Geiger mode (MRS APD). START delivers 100% efficiency of cosmic muon detection, while its intrinsic noise level is less than 10^{-2} Hz. CRTF, consisting of 160 START channels, has been continuously operated by the ALICE TOF collaboration for more than 25 000 hours, and has demonstrated a high level of stability. Fewer than 10% of MRS APDs had to be replaced during this period.
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