Design and evaluation of prototype readout electronics for nuclide detector in Very Large Area Space Telescope
Design and evaluation of prototype readout electronics for nuclide detector in Very Large Area Space Telescope
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超大面积太空望远镜核素探测器读出电子原型设计与评估
DOI：
10.1007/s41365-022-01047-5
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发表时间：
2022-06
期刊：
影响因子：
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通讯作者：
Cheng-Xin Zhao
中科院分区：
文献类型：
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作者：
Hai-Bo Yang;Xian-Qin Li;Yu-Hong Yu;Yong Chen;Jie Kong;Yong-Jie Zhang;Shu-Wen Tang;Jian-Hua Guo;Bing Yang;Feng-Jiao Su;Wen-Jian Sun;Jin-Xiang Wang;Cheng-Xin Zhao
中国计划开发下一代暗物质粒子探测卫星，称为超大面积太空望远镜（VLAST）。作为这一进程的一个重要步骤，目前正在进行VLAST探测器和电子设备的原型设计。核素探测器是VLAST的核心探测器。它主要测量核素的电荷，并区分高能伽马射线和电子。本文将讨论VLAST的核素探测器的原型读出电子学，它使用VATA 160专用集成电路芯片精确测量光电倍增管的电荷信号，此外，我们考虑了一系列关键问题，包括辐射加固和环境监测。测试结果表明，该系统运行稳定，性能良好，各项技术指标良好。此外，每个电子通道实现0-12.5 pC的动态范围，随机噪声水平超过1.6 fC，积分非线性超过0.35%。
China plans to develop the next generation dark matter particle explorer satellite, referred to as the Very Large Area Space Telescope (VLAST). As an essential step in this process, the prototype design of detectors and electronics for the VLAST is currently underway. The nuclide detector is a core detector in the VLAST. It mainly measures nuclides’ charges and distinguishes high-energy gamma rays and electrons. This paper will discuss the prototype readout electronics for the VLAST’s nuclide detector, which accurately measures the charge signal of the photomultiplier tubes using the VATA160 application-specific integrated circuit chip; furthermore, we consider a series of critical problems, including radiation-hardening and environment monitoring. The test results show that the system exhibits stable operation, good performance, and good technical indicators. Furthermore, each electronic channel achieves a dynamic range of 0–12.5 pC, the random noise level exceeds 1.6 fC, and the integral nonlinearity exceeds 0.35%.