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中国先进研究堆冷中子导管的模拟研究

中国先进研究堆冷中子导管的模拟研究[J]. 原子能科学技术, 2003, 37(4): 361-361. DOI: 10.7538/yzk.2003.37.04.0361
引用本文: 中国先进研究堆冷中子导管的模拟研究[J]. 原子能科学技术, 2003, 37(4): 361-361. DOI: 10.7538/yzk.2003.37.04.0361
GUO Li-ping, YANG Tong-hua, WANG Hong-li, SUN Kai, ZHAO Zhi-xiang(China Institute of Atomic Energy, P. O. Box 275-30, Beijing 102413, China). Simulation Study on the Cold Neutron Guides in China Advanced Research Reactor[J]. Atomic Energy Science and Technology, 2003, 37(4): 361-361. DOI: 10.7538/yzk.2003.37.04.0361
Citation: GUO Li-ping, YANG Tong-hua, WANG Hong-li, SUN Kai, ZHAO Zhi-xiang(China Institute of Atomic Energy, P. O. Box 275-30, Beijing 102413, China). Simulation Study on the Cold Neutron Guides in China Advanced Research Reactor[J]. Atomic Energy Science and Technology, 2003, 37(4): 361-361. DOI: 10.7538/yzk.2003.37.04.0361

中国先进研究堆冷中子导管的模拟研究

详细信息
  • 中图分类号: TL8173;O2422

  • 摘要: 应用蒙特卡罗方法对中国先进研究堆(CARR)上的两条冷中子导管CNG1和CNG2的设计方案进行了模拟研究。在假定的冷中子源谱分布下,两条导管出口处的中子注量率均达到1×109cm-2·s-1以上。CNG1和CNG2的中子传输效率分别为50%和42%,中子束最大发散角分别为2 2°和1 9°。中子束沿水平方向的分布均匀,其最大起伏不超过3%。重力显著影响中子束沿垂直方向的分布。

     

    Abstract: The designs of the two cold neutron guides, CNG1 adn CNG2, to be built in China advanced research reactor (CARR) are studied with MonteCarlo simulation technique. The neutron flux density at the exit of the both guides can reach above 1×109 cm-2·s-1 under the assumed flux spectrum of the cold neutron source. The transmission efficiency is 50% and 42%, and the maximum divergence is about 2.2° and 1.9°, respectively for CNG1 and CNG2. Neutron distribution along horizontal direction is quite uniformal for both guides, with maximum fluctuation of less than 3%. Gravity can affect neutron distribution along vertical direction considerably.

     

  • [1] LefmannK,NielsenK.McStas,aGeneralSoftwarePackageforNeutronRay tracingSimulations[J]. NeutronNews,1999,3(10):20~23.
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出版历程
  • 收稿日期:  2002-02-08
  • 刊出日期:  2003-07-19

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