论文标题
在$ -60^{\ Circ} $ C和$ -20^{\ Circ} $ C之间的低温下SIPM性能研究
Study on SiPM performance at low temperatures between $-60^{\circ}$C and $-20^{\circ}$C
论文作者
论文摘要
ra是暗物质和中微子实验的主要背景来源。液体闪烁检测器测量ra浓度（$ \ rm MBQ/M^3 $）是使用硅光电层（SIPM）阵列在低温下高度敏感的方法。 SIPM性能特征与检测器的较低检测极限密切相关。在这项研究中，我们构建了一个自动，准确的低温测量系统，以研究不同温度下的SIPM的单个光电子光谱，SPE分辨率，光学串扰和sipm的脉冲。结果，我们在不同温度下获得了SIPM参数的变化趋势，并获得了SIPM最佳工作条件，这可以提高检测器的灵敏度
Radon is the main background source of dark matter and neutrino experiments. Radon concentration ($\rm mBq/m^3$) measurement by liquid scintillation detector is a highly sensitive method at low temperatures using silicon photomultipliers (SiPMs) arrays. The SiPM performance characteristics are closely related to the lower detection limit of the detector. In this study, we built an automatic and accurate low-temperature measurement system to study the single photoelectron spectrum, SPE resolution, optical crosstalk, and after-pulse of the SiPM at different temperatures. As a result, we obtained the variation trend of the SiPM parameters at different temperatures, and the SiPM optimal working conditions were obtained, which can improve the detector's sensitivity
