Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (8): 128 doi: 10.1007/s41365-019-0642-y


Spectrometer of Hard X-ray Imager payload on board the ASO-S Mission

Yan Zhang1, 2 Jian-Hua Guo1 Zhe Zhang1 Deng-Yi Chen1 Yi-Ming Hu1 Yong-Qiang Zhang1, 2 Tao Ma1 Yong-Yi Huang1   

  1. 1 Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-01-04 Revised:2019-03-21 Accepted:2019-03-22
  • Contact: Zhe Zhang
  • Supported by:
    This work was supported by the Strategic Priority Program Stage II on Space Science of Chinese Academy of Sciences (No. XDA15320104) and the National Natural Science Foundation of China (Nos. 11703097, 11427803, 11820101002, 11622327, 11773087, U1631116, and 11803093).
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Yan Zhang, Jian-Hua Guo, Zhe Zhang, Deng-Yi Chen, Yi-Ming Hu, Yong-Qiang Zhang, Tao Ma, Yong-Yi Huang. Spectrometer of Hard X-ray Imager payload on board the ASO-S Mission.Nuclear Science and Techniques, 2019, 30(8): 128     doi: 10.1007/s41365-019-0642-y

Abstract: A spaceborne hard X-ray spectrometer, composed of an array of 99 scintillation detectors and associated readout electronics, has been developed for the hard X-ray imager (HXI). The HXI is one of the three payloads onboard the advanced space-based solar observatory (ASO-S), which is scheduled to be launched in early 2022 as the first Chinese solar satellite. LaBr3 scintillators and photomultiplier tubes with a super bialkali cathode are used to achieve an energy resolution better than 20% at 30 keV. Further, a new multi-channel charge-sensitive readout application-specific integrated circuit guarantees high-frequency data acquisition with low power consumption. This paper presents a detailed design of the spectrometer for the engineering model of the HXI and discusses its noise and linearity performance.

Key words: Solar radiation detection, X-ray spectrometer, Hard X-ray imager, ASO-S