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 ›› 2015, Vol. 26 ›› Issue (6): 060402 doi: 10.13538/j.1001-8042/nst.26.060402


A novel compact Tokamak Hard X-ray diagnostic detector

CAO Jing,1, 2 JIANG Chun-Yu,1, 2 ZHAO Yan-Feng,1, 2 YANG Qing-Wei,3 YIN Ze-Jie 1, 2   

  1. 1State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
    2Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
    3Southwestern Institute of Physics, Chengdu 610041, China
  • Contact: YIN Ze-Jie
  • Supported by:

    Supported by the National Natural Science Foundation of China (Nos. 11375263 and 11375195) and National magnetic confinement fusion Science Program of China (No. 2013GB104003)

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CAO Jing, JIANG Chun-Yu, ZHAO Yan-Feng, YANG Qing-Wei, YIN Ze-Jie . A novel compact Tokamak Hard X-ray diagnostic detector.Nuclear Science and Techniques, 2015, 26(6): 060402     doi: 10.13538/j.1001-8042/nst.26.060402


A compact X-ray detector based on the lutetium yttrium oxyorthosilicate scintillator (LYSO) and silicon photomultiplier (SiPM) has been designed and fabricated for the hard X-ray diagnosis on the HL 2A and HL 2M Tokamak devices. The LYSO scintillator and SiPM in small dimensions were combined in a heat shrink tube package, making the detector compact and integrative. The Monte Carlo particle transport simulation tool, Geant4, was utilized for the design of the detector for the hard X-ray from 10 keV to 200 keV and the best structure scheme was presented. Finally, the detector was used to measure the photon spectrum of a 137Cs gamma source with a pre-amplifier and a multichannel amplitude analyzer. The measured spectrum is consistent with the theoretic spectrum, it has shown that the energy resolution of the detector is less than 14.8% at an energy of 662 keV.

Key words: Hard X-ray, Tokamak, HL 2A/HL 2M, Lutetium yttrium oxyorthosilicate scintillator (LYSO), Silicon photomultiplier (SiPM), Geant4