Design and evaluation of prototype readout electronics for nuclide detector in Very Large Area Space Telescope  

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 

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Harbin Institute of Technology,Harbin 150001,China [4]Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210000,China [5]Harbin University of Science and Technology,Harbin 150080,China [6]Northwest Normal University,Harbin 150080,China

出　　处：《Nuclear Science and Techniques》2022年第5期154-166,共13页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.U2031206,U1831206,11975292,11875304);the Scientific Instrument Developing Project of the Chinese Academy of Sciences(No.GJJSTD20210009);the CAS“Light of West China”Program;the CAS Pioneer Hundred Talent Program。

摘　　要：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 applicationspecific 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%.

关 键 词：Dark matter VLAST Nuclidedetector Prototype readout electronics VATA160 Large dynamic range Irradiationtest Performance test 

分 类 号：TL81[核科学技术—核技术及应用] V474.1[航空宇航科学与技术—飞行器设计] P145.9[天文地球—天体物理]