Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (4): 40202-040202.doi: 10.11889/j.0253-3219.2018.hjs.41.040202

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS • Previous Articles     Next Articles

Monitoring cumulative radiation dose of experimental sites and staff in EAST

XU Yu1,2, XU Guosheng1, ZHONG Guoqiang1, HU Liqun1, LI Kai1,2, XIAO Min1, HAN Liangwen1,2   

  1. 1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China;
    2. University of Science and Technology of China, Hefei 230026, China
  • Received:2017-10-02 Revised:2017-11-20 Online:2018-04-10 Published:2018-04-11
  • Supported by:
    Supported by National Natural Science Foundation of China (No.11605241) and National Magnetic Confinement Fusion Research Program of China (No.2015GB101002)

Abstract: [Background] The reaction of D-D may generate radiation in the experiment of experimental advanced superconducting Tokamak (EAST), and the total power can reach several tens of megawatts. [Purpose] This paper aims to assess the ionizing radiation effects of surrounding environment and staff. [Methods] Applying the optically stimulated luminescence and solid nuclear track, we did the cumulative monitoring of neutron and gamma radiation dose in experimental sites surrounding Tokamak device hall, i.e., personnel entrance access, inside and outside of the screen door, peripheral diagnosis room and the main control room. Thirteen monitoring points were arranged for continuous measurement throughout years, taking a period of 90 d for dose tablets replacement and reading. [Results] From 2010 to 2017, there were 165 staffs on key positions in EAST, and a radiation dose database of the experimental sites and staff was established using the Access software. The effective dose of monitoring points outside the installation hall and the workers were less than 0.5 mSv after deducting natural background radiation. [Conclusion] This paper provides a preliminary reference for the management system and specification of radiation protection for Tokamak fusion devices.

Key words: Tokamak, Neutron and gamma cumulative dose, The dose of experimental sites and staff

CLC Number: 

  • TL75