A study of beryllium moderator thickness for a fission chamber with fast neutron measurements

被引：5
作者：
Wang, Wen-Di [1 ,2 ]
Cao, Hong-Rui [1 ,2 ]
Cao, Jing [1 ,2 ]
Yuan, Guo-Liang [3 ]
Yin, Ze-Jie [1 ,2 ]
机构：
[1] Univ Sci & Technol China, State Key Lab Particle Detect & Elect, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
[3] Southwestern Inst Phys, Chengdu 610041, Sichuan, Peoples R China
来源：
NUCLEAR SCIENCE AND TECHNIQUES | 2017年 / 28卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Fission chamber; Fast neutron; Neutron flux monitor; ITER; GEANT4; ITER SHIELDING SYSTEM; MOCK-UP;
D O I：
10.1007/s41365-017-0283-y
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The detection efficiency of the fission chamber (FC) is very important for studying the neutron flux measurement (NFM) system in ITER. In this article, we mainly focus our attention on the influence of the moderator. With the Monte Carlo particle transport simulation tool named Geant4, we make a simulation of FC detection efficiency with different levels of thickness of a beryllium moderator. Two manufactured FCs for ITER-NFM systems are then used to test the parameters and performance. The test results agree well with our simulation.
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页数：6
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