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 ›› 2013, Vol. 24 ›› Issue (4): 040402 doi: 10.13538/j.1001-8042/nst.2013.04.002


Dynamic linear calibration method for a wide range neutron flux monitor system in ITER

LI Shiping1,2  XU Xiufeng1,2,*  CAO Hongrui1,2  YANG Qingwei3  YIN Zejie1,2   

  1. 1State Key Laboratory of Particle Detection and Electronics, University of Science andTechnology 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
  • Received:2013-01-25
  • Contact: XU Xiufeng
  • Supported by:

    Supported by ITER Plan National Major Project (No. 2008GB109000)

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LI Shiping, XU Xiufeng, CAO Hongrui, YANG Qingwei, YIN Zejie. Dynamic linear calibration method for a wide range neutron flux monitor system in ITER.Nuclear Science and Techniques, 2013, 24(4): 040402     doi: 10.13538/j.1001-8042/nst.2013.04.002


As a key part of the diagnosis system in the International Thermonuclear Experimental Reactor (ITER), the neutron flux monitor (NFM), which measures the neutron intensity of the fusion reaction, is a Counting-Campbelling system with a large dynamic counting range. A dynamic linear calibration method is proposed in this paper to solve the problem of cross-over between the different counting and Campbelling channels, and improve the accuracy of the cross-calibration for long-term operation. The experimental results show that the NFM system with the dynamic linear calibration system can obtain the neutron flux of the fusion reactor in real time and realize the seamless measurement area connection between the two channels.

Key words: Dynamic linear calibration, Long-term stability, Cross-over, Neutron flux monitor, International Thermonuclear Experimental Reactor (ITER)