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 (3): 42 doi: 10.1007/s41365-019-0571-9

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles     Next Articles

High-resolution pixelated CdZnTe detector prototype system for solar hard X-ray imager

Shen Wang1,2,3 • Jian-Hua Guo1,2,3 • Yan Zhang1,2 • Wei Chen1,2,4   

  1. 1 Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210034, China
    2 Key Laboratory of Dark Matter and Space Astronomy, Chinese Academy of Sciences, Nanjing 210034, China
    3 School of Astronomy and Space Science, University of Science and Technology of China, Nanjing 210034, China
    4 University of Chinese Academy of Science, Beijing 100049, China
  • Received:2018-07-06 Revised:2018-08-27 Accepted:2018-09-01
  • Contact: Jian-Hua Guo E-mail:jhguo@pmo.ac.cn
  • Supported by:
    This work was supported by the National Natural Science Funds of China (Nos. 11622327, 11273070, 11773087, U1631116), the Youth Innovation Promotion Association of the Chinese Academy of Sciences (No. 2014275), and the Strategic Pioneer Program on Space Science of the Chinese Academy of Sciences (No. XDA15010200).
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Shen Wang, Jian-Hua Guo, Yan Zhang, Wei Chen. High-resolution pixelated CdZnTe detector prototype system for solar hard X-ray imager.Nuclear Science and Techniques, 2019, 30(3): 42     doi: 10.1007/s41365-019-0571-9
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Abstract: A multichannel low-noise electronic prototype system was designed for a pixelated CdZnTe detector. This system is the result of preliminary work on a solar hard X-ray imager, which is one of the three payloads for future solar observations satellite- Advanced Space-based Solar Observatory (ASO-S). A new charge-sensitive amplifier application-specific integrated circuit, VATA450.3, with an on-chip analog-to-digital converter, is used to read out 8×8 anode pixel signals. Two CdZnTe detectors with a thickness of 2 mm and 5 mm were tested. The 2-mm-thick detector achieved energy resolution better than 5% (fullwidth at half-maximum, FWHM) at 59.5 keV, and the 5-mm-thick detector had better resolution than 1.2% (FWHM) at 662 keV. The design and test results of the prototype system are discussed in this paper.

Key words: CdZnTe, Readout system, Solar observation, Hard X-ray imager