Study on the initial sensitivity of prompt response self-powered neutron detector in Nuclear Reactor
WU Xiong1,2, CAI Li3, ZHANG Xiangju3, LU Haoliang3, JIANG Jieqiong1
1. Hefei Institute of Physical Science, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230031, China;
2. University of Science and Technology of China, Hefei 230026, China;
3. China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen 518031, China
Abstract：In this paper, the prototype with Cobalt-59 emitter as a representative of instantaneous SPND was developed and modeled to calculate its initial sensitivity. This calculation model is based on Monte Carlo method of multi-particle coupling transportation. And some important details, such as the physical characteristics of cobalt SPND, the generation of signal current, were discussed thoroughly. The research results from this model are compared with experimental results by using gold foilactivation methods and show a very good agreement. The maximum relative error is not greater than 5%. It demonstrated that this method can be successfully applied in SPND calculation and better than determinism method.
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