| 二次中子源在中国实验快堆上应用的初步可行性分析 |
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| 引用本文： | 赵阶成,李小华,喻宏,陈晓亮,陈效先.二次中子源在中国实验快堆上应用的初步可行性分析[J].原子能科学技术,2017,51(5):811-816. |
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| 作者姓名： | 赵阶成 李小华 喻宏 陈晓亮 陈效先 |
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| 作者单位： | 1.南华大学 核科学技术学院，湖南 衡阳421001；2.中国原子能科学研究院，北京102413；3.南华大学 湖南省核燃料循环技术与装备协同创新中心，湖南 衡阳421001 |
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| 基金项目： | 国家自然科学基金资助项目(11205083)，湖南省自然科学基金资助项目(2015JJ3103)，湖南省教育厅重点项目资助(15A159) |
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| 摘 要： | 为满足中国实验快堆(CEFR)物理启动的经济性需要,研究二次中子源替代堆内的~(252)Cf一次中子源的可行性。参照CEFR的相关参数及二次中子源产生中子的原理,设计了二次中子源。用MCNP程序模拟计算了二次中子源组件中~(123)Sb的(n,γ)核反应率和9Be的(γ,n)单核反应率,得出二次中子源组件在不同工况辐照下的源强,分析其在CEFR中应用的可行性。计算结果表明,在大多数工况下,所设计的二次中子源组件能满足CEFR的启动要求。本文所设计的二次中子源及计算结果可为CEFR二次中子源的应用提供参考。
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| 关 键 词： | 二次中子源 MCNP 可行性 源强 |
Preliminary Feasibility Analysis of Application of Secondary Neutron Source in China Experimental Fast Reactor |
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| ZHAO Jie-cheng,LI Xiao-hua,YU Hong,CHEN Xiao-liang,CHEN Xiao-xian.Preliminary Feasibility Analysis of Application of Secondary Neutron Source in China Experimental Fast Reactor[J].Atomic Energy Science and Technology,2017,51(5):811-816. |
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| Authors: | ZHAO Jie-cheng LI Xiao-hua YU Hong CHEN Xiao-liang CHEN Xiao-xian |
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| Affiliation: | 1.School of Nuclear Science and Technology, University of South China, Hengyang 421001, China; 2.China Institute of Atomic Energy, Beijing 102413, China; 3.Cooperative Innovation Center for Nuclear Fuel Cycle Technology & Equipment, University of South China, Hengyang 421001, China |
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| Abstract: | To improve economic efficiency during the physical start-up of China Experimental Fast Reactor (CEFR), the feasibility of using secondary neutron source to replace 252Cf source was studied.The secondary neutron source was designed based on the principle of neutron generation of secondary source and with reference to relevant CEFR parameters.123Sb (n, γ) reaction rate and 9Be single nucleon (γ, n) reaction rate in the secondary source assembly were calculated by using MCNP code, and source strengths in different exposure conditions were obtained.Then the feasibility of applying the secondary source in CEFR physical start-up was analyzed.The calculation results show that the designed secondary neuron source assembly can meet the requirements of CEFR start-up in most operating conditions.The secondary neutron source designed in this paper and the calculation results can provide useful data for the application of secondary neutron source in CEFR start-up. |
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| Keywords: | secondary neutron source MCNP feasibility source strength |
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