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《中国物理C》(英文)编辑部
2024年10月30日

Thermal analysis and expected performance of the low energy instrument on board the HXMT satellite

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WANG Yu-Sa, CHEN Yong, XU Yu-Peng, WANG Juan, CUI Wei-Wei, LI Wei, HAN Da-Wei, ZHANG Zi-Liang, CHEN Tian-Xiang, LI Cheng-Kui, YANG Yan-Ji, LIU Xiao-Yan, HUO Jia, ZHANG Jun-Min and ZHENG Yi-Qian. Thermal analysis and expected performance of the low energy instrument on board the HXMT satellite[J]. Chinese Physics C, 2010, 34(12): 1812-1817. doi: 10.1088/1674-1137/34/12/005
WANG Yu-Sa, CHEN Yong, XU Yu-Peng, WANG Juan, CUI Wei-Wei, LI Wei, HAN Da-Wei, ZHANG Zi-Liang, CHEN Tian-Xiang, LI Cheng-Kui, YANG Yan-Ji, LIU Xiao-Yan, HUO Jia, ZHANG Jun-Min and ZHENG Yi-Qian. Thermal analysis and expected performance of the low energy instrument on board the HXMT satellite[J]. Chinese Physics C, 2010, 34(12): 1812-1817.  doi: 10.1088/1674-1137/34/12/005 shu
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Received: 2010-02-01
Revised: 2010-04-06
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Thermal analysis and expected performance of the low energy instrument on board the HXMT satellite

    Corresponding author: WANG Yu-Sa,

Abstract: The Low Energy X-ray Instrument (LE) of the Hard X-ray Modulation Telescope (HXMT) uses the Swept Charge Device (SCD) to detect the X-rays in 1—15 keV. The performance of SCD is vulnerable to temperature. We analyzed the thermal condition of LE at different satellite working attitudes with the Finite Element Method (FEM). It is shown that the angle between the sunlight and the normal line of the barrier should be less than 26°, to keep the SCD detectors working in the required temperature range, i.e. -40 ℃ to -80 ℃. We find that the performance of LE is very stable in this temperature range, with a typical energy resolution of 160 eV at 5.9 keV.

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