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 ›› 2018, Vol. 29 ›› Issue (1): 7 doi: 10.1007/s41365-017-0345-1


Study on the performance of a large-size CsI detector for high energy γ-rays

He Dong 1,2 • De-Qing Fang 1 • Chen Li 1   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Contact: De-Qing Fang
  • Supported by:

    This work was supported by the Major State Basic Research Development Program of China (No. 2013CB834405) and the National Natural Science Foundation of China (Nos. 11421505, 11475244, and 11175231).

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He Dong, De-Qing Fang, Chen Li. Study on the performance of a large-size CsI detector for high energy γ-rays.Nuclear Science and Techniques, 2018, 29(1): 7     doi: 10.1007/s41365-017-0345-1


The measurement of high-energy γ-rays is an important experimental method to study the giant resonance in a nucleus, c reaction in nuclear astrophysics, and so on. The performance of a large-size CsI detector for crays detection is studied by comparison between the experimental measurements and GEANT4 simulation. The reliability of the simulated efficiency for low-energy γ-rays is verified by comparing with the experimental data. The efficiency of the CsI detector for high-energy γ-rays was obtained by the GEANT4 simulation. The simulation shows that the detection efficiency of 20 MeV c-rays can reach 3.8%.

Key words: CsI:Tl, Scintillation detector, Full absorption efficiency, Energy resolution, GEANT4 simulation