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

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WU Feng, WANG Huan-Yu, ZHAO Xiao-Yun, MENG Xiang-Cheng, XU Yan-Bing, WANG Hui, MA Yu-Qian, LU Hong, WANG Ping, SHI Feng, LI Xin-Qiao, JIANG Wen-Qi, AN Zhen-Hua, YU Xiao-Xia and LIU Han-Yi. Design and performance study of the LEPD silicon tracker onboard the CSES satellite[J]. Chinese Physics C, 2013, 37(2): 026004. doi: 10.1088/1674-1137/37/2/026004
WU Feng, WANG Huan-Yu, ZHAO Xiao-Yun, MENG Xiang-Cheng, XU Yan-Bing, WANG Hui, MA Yu-Qian, LU Hong, WANG Ping, SHI Feng, LI Xin-Qiao, JIANG Wen-Qi, AN Zhen-Hua, YU Xiao-Xia and LIU Han-Yi. Design and performance study of the LEPD silicon tracker onboard the CSES satellite[J]. Chinese Physics C, 2013, 37(2): 026004.  doi: 10.1088/1674-1137/37/2/026004 shu
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Received: 2012-04-23
Revised: 2012-07-10
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Design and performance study of the LEPD silicon tracker onboard the CSES satellite

    Corresponding author: WU Feng,
    Corresponding author: WANG Huan-Yu,

Abstract: 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 ΔE-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.

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