Design and performance study of the LEPD silicon tracker onboard the CSES satellite

The low energy particle detector （LEPD） is one of the main payloads onboard the China seismic electromagnetic satellite （CSES）. The detector is designed to ascertain space electrons （0.1–10 MeV） and protons （2–50 MeV）. It has the capability of identifying the electrons and protons, to measure the en...

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Published inChinese physics C Vol. 37; no. 2; pp. 57 - 63
Main Author 吴峰 王焕玉 赵小芸 孟祥承 徐岩冰 王辉 马宇蒨 卢红 王平 石峰 李新乔 蒋文奇 安振华 于晓霞 刘汉一
Format Journal Article
LanguageEnglish
Published 01.02.2013
Subjects
Charged particles
CsI（Tl）
Detectors
Electronics
Onboard
Payloads
Position measurement
Satellites
Silicon
性能
磁卫星
粒子探测器
脱硅
设计
跟踪仪
跟踪系统
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Summary:The low energy particle detector （LEPD） is one of the main payloads onboard the China seismic electromagnetic satellite （CSES）. The detector is designed to ascertain space electrons （0.1–10 MeV） and protons （2–50 MeV）. It has the capability of identifying the electrons and protons, to measure the energy spectrum and the incident angle of the particles. The LEPD is made up of a silicon tracker system, a CsI （Tl） mini-calorimeter, an anti-coincidence system made by plastic scintillator, as well as electronics and a data acquisition system （DAQ）. The tracker is also a kind of E-E telescope; it consists of two layers of double-sided silicon strip detectors （DSSD）. The signals emerging from the silicon tracker can be read out by two pieces of application specific integrated circuit （ASIC）, which also can generate an event trigger for the LEPD. The functions of the DSSD system in the LEPD for charged particles were tested by 241Am @5.486 MeV α particles. The results show that the DSSD system works well, and has high performance to detect charged particles and measure the position of incident particles.
Bibliography:11-5641/O4
silicon detector, △E-E, particles identification, electrons detector, protons detector, position of incidentparticles
WU Feng, WANG Huan-Yu,ZHAO Xiao-Yun,MENG Xiang-Cheng,XU Yan-Bing, WANG Hui, MA Yu-Qian,2LU Hong, WANG Ping, SHI Feng,LI Xin-Qiao,JIANG Wen-Qi, AN Zhen-Hua, YU Xiao-Xia, LIU Han-Yi（1 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China 2 Key Laboratory of Particle Astrophysics （LPA）, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China）
The low energy particle detector （LEPD） is one of the main payloads onboard the China seismic electromagnetic satellite （CSES）. The detector is designed to ascertain space electrons （0.1–10 MeV） and protons （2–50 MeV）. It has the capability of identifying the electrons and protons, to measure the energy spectrum and the incident angle of the particles. The LEPD is made up of a silicon tracker system, a CsI （Tl） mini-calorimeter, an anti-coincidence system made by plastic scintillator, as well as electronics and a data acquisition system （DAQ）. The tracker is also a kind of E-E telescope; it consists of two layers of double-sided silicon strip detectors （DSSD）. The signals emerging from the silicon tracker can be read out by two pieces of application specific integrated circuit （ASIC）, which also can generate an event trigger for the LEPD. The functions of the DSSD system in the LEPD for charged particles were tested by 241Am @5.486 MeV α particles. The results show that the DSSD system works well, and has high performance to detect charged particles and measure the position of incident particles.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/2/026004