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.
[1] 徐小恒, 莫华均, 李东仓, 等. 铑自给能探测器延迟信号数字处理算法与实验研究[J]. 核动力工程, 2019, 40(4): 5.
[2] 杨有琏, 王文滋, 周德君, 等. 钴自给能堆芯中子探测器的研制[J]. 核技术, 1983, 6(4): 10-14.
[3] 张英振, 万东平. 铑自给能中子探测器的性能研究[J]. 原子能科学技术, 1980, 14(1): 41-49.
[4] Warren H D. Calculational model for self-powered neutron detector[J]. Nuclear Science and Engineering, 1972, 48: 331-342.
[5] Goldstein N P. A Monte-Carlo calculation of the neutron sensitivity of self-powered detectors[J]. IEEE Transactions on Nuclear Science, 1973, 20(1): 549-556.
[6] Jaschik W, Seifritz W. Model for calculating prompt response self-powered neutron detectors[J]. Nuclear Science and Engineering, 1974, 53: 61-78.
[7] Warren H D, Shah N H. Neutron and gamma-ray effects on self-powered in-core radiation detectors[J]. Nuclear Science and Engineering, 1974, 54: 395-415.
[8] Vermeeren L. Neutron and gamma sensitivities of selfpowered detectors: Monte Carlo modelling[C]. 20154th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA). Piscataway, NJ: IEEE, 2015.
[9] Fka B, Mp A, Hcs C, et al. Vanadium, rhodium, silver and cobalt self-powered neutron detector calculations by RAST-K v2.0[J]. Annals of Nuclear Energy, 2018, 111: 644-659.
[10] 丁洪林. 核辐射探测器[M]. 哈尔滨: 哈尔滨大学出版社, 2010.
[11] Lee H, Choi S, Cha K H, et al. New calculational model for self-powered neutron detector based on Monte Carlo simulation[J]. Journal of Nuclear Science & Technology, 2015, 52(5): 660-669.
[12] Vermeeren L, Van Nieuwenhove R. Theoretical study of radiation induced electromotive force effects on mineral insulated cables[J]. Review of Scientific Instruments, 2003, 74(11): 4667-4674.