ASO-S HXI量能器电荷测量ASIC的抗辐照性能研究  

Radiation tolerance of the charge measurement ASIC for the ASO-S HXI spectrometer

作　　者：万强 郭建华[1,2] 张岩[1] 张永强 胡一鸣 WAN Qiang;GUO Jianhua;ZHANG Yan;ZHANG Yongqiang;HU Yiming(Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院紫金山天文台,南京210023 [2]中国科学技术大学,合肥230026

出　　处：《核技术》2023年第3期27-33,共7页Nuclear Techniques

基　　金：中国科学院空间科学战略先导专项(No.XDA15320104)、中国科学院青年创新促进会(No.2022321、No.2021316)、中国科学院科学仪器发展项目(No.GJJSTD20210009)资助;国家自然科学基金(No.U1831206、No.12227805、No.11921003、No.11973097)。

摘　　要：先进天基太阳天文台卫星(Advanced Space-based Solar Observatory,ASO-S)是我国科学家提出的专用于观测太阳的科学卫星。硬X射线成像仪(Hard X-ray Imager,HXI)是ASO-S的三个科学载荷之一,HXI的量能器由99个溴化镧晶体-光电倍增管探测单元构成。量能器的前端电子学采用了一种型号为IDE3381的高集成度电荷测量ASIC(Application-specific Integrated Circuit),利用它在空间和功率受限的卫星平台上实现了对99路探测单元信号的处理。为了评估IDE3381在空间辐射环境中的抗辐照性能,设计了一套自动化测试系统,用重离子束流和^(60)Coγ源分别进行了单粒子效应(包括单粒子翻转和单粒子闩锁)和总剂量辐照效应试验。测试结果表明:ASIC IDE3381的抗辐照性能满足HXI飞行件的要求。[Background]Hard X-ray Imager(HXI)is one of the three scientific payloads onboard of the advanced space-based solar observatory(ASO-S).The calorimeter of HXI consists of 99 LaBr3 crystal and photomultiplier tube(PMT)detection units.A highly integrated charge-measurement application-specific integrated circuit(ASIC)with model IDE3381 is adopted in the front-end electronics of the calorimeter to process the signals from the 99 detection units on the space-limited and power-limited satellite platform.[Purpose]This study aims to evaluate the radiation tolerance of model IDE3381 ASIC in a space radiation environment.[Methods]A test bench with a flexible structure was designed by separating the device undergoing testing from the data acquisition(DAQ)system,hence shielding DAQ from the radiation environment.The performance of ASIC was automatically tested and monitored in the test bench during radiation tests.Both single-event effect(SEE),including single-event upset and single-event latch-up,and total ionizing dose(TID)tests were carried out by using a heavy ion beam and ^(60)Co gamma-ray,respectively.[Results]The test results show that the SEE threshold of model IDE3381 ASIC is greater than 75 MeV∙cm^(2)∙mg^(−1),and the TID capacity is greater than 30 krad(Si).[Conclusions]The radiation tolerance of the charge measurement ASIC(model IDE 3381)meets the requirements of ASO-S HXI flight model.

关 键 词：空间电子学 辐照效应 高集成度电荷测量ASIC 

分 类 号：TL817[核科学技术—核技术及应用]