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 ›› 2017, Vol. 28 ›› Issue (2): 23 doi: 10.1007/s41365-016-0176-5

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

A new method for position-sensitive measurement of beta surface contamination

Yan-Tao Qu 1, Hui Wang 1, Yang Liu 1, Ling Chen 1, Jie Hou 2, Zhe Liu 1, Ji-Zeng Ma 1,3   

  1. 1. Department of Radiation ProtectionChina Institute of Atomic Energy, Beijing, China
    2.Nuclear and Radiation Safety CenterMinistry of Environment Protection, Beijing, China
    3.Occupational Radiation Protection Unit, Radiation Safety and Monitoring SectionNSRW, IAEAVienna, Austria
  • Contact: Yan-Tao Qu E-mail:quyantao19820831@126.com
  • Supported by:

    This work was supported by the Technology and Industry for National Defense (No. HK.FA1001-1).

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Yan-Tao Qu, Hui Wang, Yang Liu, Ling Chen, Jie Hou, Zhe Liu, Ji-Zeng Ma. A new method for position-sensitive measurement of beta surface contamination.Nuclear Science and Techniques, 2017, 28(2): 23     doi: 10.1007/s41365-016-0176-5

Abstract:

In this paper, we propose a new method for position-sensitive measurement of beta surface contamination. With a position-sensitive detector of enlarged sensitive detection area, accurate information of the contamination distribution can be obtained. The position-sensitive detection is based on a large-area plastic scintillator and the wavelength shifting (WLS) fibers and adopts the “light center of gravity” method. Optical transmission of the detector is simulated with a preliminary detector model, and feasibility of the detector design and measurement method is evaluated using an experiment system. The simulation and experiment results at different beta-ray incident points on the scintillator surface show that there is a polynomial relationship between the average amplitude ratio of the output pulses from the two parallel WLS fibers in the same fiber layer and the relative distance from the incident point to the WLS fiber.

Key words: Beta surface contamination, Position-sensitive measurement, Wavelength shifting fibers, Plastic scintillator