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题名: Onboard calibration circuit for the DAMPE BGO calorimeter front-end electronics
作者: Zhang, De-Liang1, 2; Feng, Chang-Qing1, 2; Zhang, Jun-Bin1, 2; Wang, Qi1, 2; Ma, Si-Yuan1, 2; Shen, Zhong-Tao1, 2; Jiang, Di1, 2; Gao, Shan-Shan1, 2; Zhang, Yun-Long1, 2; Guo JianHua(郭建华)3; Liu, Shu-Bin1, 2; An, Qi1, 2
刊名: CHINESE PHYSICS C
出版日期: 2016-05-01
卷号: 40, 期号:5
关键词: DAMPE ; BGO calorimeter ; front-end electronics ; calibration circuit ; VA160
DOI: 10.1088/1674-1137/40/5/056101
文章类型: Article
英文摘要: DAMPE (DArk Matter Particle Explorer) is a scientific satellite which is mainly aimed at indirectly searching for dark matter in space. One critical sub-detector of the DAMPE payload is the BGO (bismuth germanium oxide) calorimeter, which contains 1848 PMT (photomultiplier tube) dynodes and 16 FEE (Front-End Electronics) boards. VA160 and VATA160, two 32-channel low power ASICs (Application Specific Integrated Circuits), are adopted as the key components on the FEEs to perform charge measurement for the PMT signals. In order to monitor the parameter drift which may be caused by temperature variation, aging, or other environmental factors, an onboard calibration circuit is designed for the VA160 and VATA160 ASICs. It is mainly composed of a 12-bit DAC (Digital to Analog Converter), an operational amplifier and an analog switch. Test results showed that a dynamic range of 0-30 pC with a precision of 5 fC (Root Meam Square, RMS) was achieved, which covers the VA160's input range. It can be used to compensate for the temperature drift and test the trigger function of the FEEs. The calibration circuit has been implemented for the front-end electronics of the BGO Calorimeter and verified by all the environmental tests for both Qualification Model and Flight Model of DAMPE. The DAMPE satellite was launched at the end of 2015 and the calibration circuit will operate periodically in space.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]: Physics
收录类别: SCI
项目资助者: Strategic Priority Research Program on Space Science of Chinese Academy of Sciences(XDA04040202-4) ; National Basic Research Program (973 Program) of China(2010CB833002) ; National Natural Science Foundation of China(11273070)
语种: 英语
WOS记录号: WOS:000375927800008
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16212
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China
2.State Key Lab Particle Detect & Elect IHEP USTC, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
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