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	Gain stabilization and consistency correction approach for multiple SiPM-based gamma-ray detectors on GECAM
	Zhang, Dali; Li, Xinqiao; Wen, Xiangyang; Xiong, Shaolin; An, Zhenghua; Sun, Xilei; Qiao, Rui; Li, Zhengwei; Gong, Ke; Hou, Dongjie
学科主题	Physics
关键词	Instrumentation and Detectors High Energy Physics - Experiment
英文摘要	Each satellite of the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM, mission) consists of 25 SiPM based gamma-ray detectors (GRDs). Although SiPM based GRD has merits of compact size and low bias-voltage, the drift of the SiPM gain with temperature is a severe problem for GRD performance. An adaptive voltage supply source was designed to automatically adjust the SiPM bias voltage to compensate the temperature effects and keep the gain stable. This approach has been proved to be effective during both the on-ground and in-flight tests. The in-flight measured variation of the SiPM gain is within 2%. To reduce the gain non-uniformity of GRDs, an iterative bias voltage adjustment approach is proposed and implemented. The gain non-uniformity is reduced from 17% to 0.6%. In this paper, the gain stabilization and consistency correction approach are presented and discussed in detail.
	2021
语种	英语
内容类型	预印本
源URL	[http://ir.ihep.ac.cn/handle/311005/289906]
专题	引力波暴高能电磁对应体全天监测器（GECAM） 高能物理研究所_实验物理中心 高能物理研究所_粒子天体物理中心 高能物理研究所_多学科研究中心 高能物理研究所_管理与技术支持 高能物理研究所_东莞分部
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang, Dali,Li, Xinqiao,Wen, Xiangyang,et al. Gain stabilization and consistency correction approach for multiple SiPM-based gamma-ray detectors on GECAM. 2021.

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