Nuclear Techniques ›› 2018, Vol. 41 ›› Issue (9): 90603-090603.doi: 10.11889/j.0253-3219.2018.hjs.41.090603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Radiation analysis and simulation of the CFETR neutral beam system prototype with hydrogen beam

HU Chundong1,2, LI Mengting1,2, XIE Yahong1, CHEN Yuqing1   

  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:2018-03-02 Revised:2018-05-04 Online:2018-09-10 Published:2018-09-12
  • Supported by:
    Supported by the National Key R&D Program of China (No.2017YFE300101), National Natural Science Foundation of China (No.11705229, No.11675215, No.11675216)

Abstract: [Background] China fusion engineering test reactor (CFETR) neutral beam injector (NBI) prototype is being actively designed and built. The radiation will be generated during the operation of the prototype. In order to ensure the safety of staff, it is very important to analyze the radiation and types and design the radiation shielding at the design stage.[Purpose] To study the radiation dose of the CFETR neutral beam test facility with hydrogen beam energy of 200 keV.[Methods] According to the established model of physics parameter and geometry, the radiation dose of the key points of the negative ion based neutral beam injector system with the beam energy of 200 keV was simulated by Monte Carlo N particle transport code (MCNP).[Results] The vacuum wall has some self-shielding effects, but it does not decrease the dose to the dose limits setting by the International Atomic Energy Agency (IAEA).[Conclusion] This result can provide important reference for the design of radiation shielding for CFETR neutral beam system.

Key words: CFETR neutral beam test facility, MCNP, Radiation dose

CLC Number: 

  • TL69