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基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究

张杰 王俊润 张宇 黄智武 马占文 李建一 韦峥 卢小龙 徐大鹏 姚泽恩

张杰, 王俊润, 张宇, 黄智武, 马占文, 李建一, 韦峥, 卢小龙, 徐大鹏, 姚泽恩. 基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究[J]. 原子核物理评论, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
引用本文: 张杰, 王俊润, 张宇, 黄智武, 马占文, 李建一, 韦峥, 卢小龙, 徐大鹏, 姚泽恩. 基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究[J]. 原子核物理评论, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
ZHANG Jie, WANG Junrun, ZHANG Yu, HUANG Zhiwu, MA Zhanwen, LI Jianyi, WEI Zheng, LU Xiaolong, XU Dapeng, YAO Zeen. BSA Design and Simulation of the Beam Characteristic for the Fast Neutron Radiography Based on a Compact Neutron Generator[J]. Nuclear Physics Review, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
Citation: ZHANG Jie, WANG Junrun, ZHANG Yu, HUANG Zhiwu, MA Zhanwen, LI Jianyi, WEI Zheng, LU Xiaolong, XU Dapeng, YAO Zeen. BSA Design and Simulation of the Beam Characteristic for the Fast Neutron Radiography Based on a Compact Neutron Generator[J]. Nuclear Physics Review, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762

基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究

doi: 10.11804/NuclPhysRev.34.04.762
基金项目: 国家自然科学基金资助项目(11375077);国家重大科学仪器设备开发专项(2013YQ40861);兰州大学-中央高校基本科研业务费专项资金(lzujbky-2016-bt08)
详细信息
    作者简介:

    张杰(1992-),女,江苏连云港人,硕士研究生,从事核能与核技术研究;E-mail:jiezhang14@lzu.edu.cn

    通讯作者: 姚泽恩,E-mail:zeyao@lzu.edu.cn。
  • 中图分类号: TL99

BSA Design and Simulation of the Beam Characteristic for the Fast Neutron Radiography Based on a Compact Neutron Generator

Funds: National Natural Science Foundation of China (11375077);National Special Scientific Instrument and Equipment Development Project (2013YQ40861);Central Universities Fundamental Research Funds for the Lanzhou University (lzujbky-2016-bt08)
  • 摘要: 中子照相是一种重要的无损检测技术,它能用于火工产品、毒品和核燃料元件等的检测。基于紧凑型D-T中子发生器,完成了一个用于快中子照相的准直屏蔽体系统(BSA)的物理设计。根据D-T中子源的能谱和角分布建立了中子源模型,采用MCNP4C蒙特卡罗程序,模拟了准直屏蔽体系统中中子和γ射线的输运,准直中子束相对于单位源中子的中子注量可以达到9.30×10-6 cm-2,准直中子束中主要是能量大于10 MeV的快中子;在设置的样品平面直径14 cm的照射视野范围,准直束中子注量的不均匀度为4.30%,准直束中中子注量与γ注量的比值为17.20,中子通量和中子注量比值J/Φ为0.992,说明准直中子束有好的平行性;准直屏蔽体外的泄露中子注量率与准直束中子注量率相比降低了2个量级。所设计的准直屏蔽体能满足快中子照相的要求。


    Neutron radiography is an important nondestructive testing technique. It can be used to detect the explosive devices, drug and the nuclear fuel element, etc. A beam-shaping-assembly (BSA) based on a compact D-T neutron generator is designed for fast neutron radiography in this paper. D-T neutron source model is constructed based on the neutron energy spectrum and angular distribution data. The transportation of neutron and γ-ray in the BSA is simulated using MCNP4C code. The neutron fluence of the collimated neutron beam with respect to the neutron source of the unit source is 9.30×10-6 cm-2. The collimated neutron beams is mainly fast neutrons with energies greater than 10 MeV. In the irradiation field range with a diameter of 14 cm, the neutron fluence uniformity of the collimated beam is 4.3%, the ratio of the neutron fluence to the gamma fluence in the collimated beam is 17.20, and the neutron flux and the neutron fluence ratio (J/Φ) is 0.992 which indicates that the collimated neutron beam has good parallelism. The leakage neutron fluence in outside of BSA is two orders of magnitude lower than that of the collimated neutron beam. The designed BSA can meet the need of fast neutron radiography.
  • [1] DANIELS G C, FRANKLYN C B, DANGENDORF V, et al. Physics Procedia, 2015, 69:109.
    [2] MOHSEN M. Nucl Instr Meth A, 2015, 788:73.
    [3] CLAYTOR T N, TADDEUCCI T N, CHARLES R, et al. Applied Radiation and Isotopes, 2004, 61:579.
    [4] GUO Lian, ZHANG Guohui, ZOU Yubin, et.al. Nucl Instr Meth A, 2009, 598:826.
    [5] ZHANG Faqiang, YANG Jianlun, LI Zhenghong, et al. Acta Physica Sinica, 2007, 56(1):583.(in Chinese) (章法强, 杨建伦, 李正宏, 等. 物理学报, 2007, 56(1):583.)
    [6] ZOU Yubin, TANG Guoyou, XU Jianguo, et al. Atomic Energy Sci Technol, 2008, 42(Suppl):17. (in Chinese) (邹宇斌, 唐国有, 胥建国, 等. 原子能科学技术, 2008, 42(Suppl):17.)
    [7] SOWERBY B D, TICKER J R. Nucl Instr Meth A, 2007, 580:799.
    [8] LEHMANN E, FREI G, NORDLUND A, et al. IEEE Trans on Nucl Sci, 2005, 52(1):389.
    [9] TANG Bin, WU Yang, LI Hang, et.al. Nucl Instr Meth A, 2013, 729:327.
    [10] LIU Yang, SHEN Fei, YANG Yao, et al. Nuclear Techniques, 2011, 34(4):273. (in Chinese) (刘洋, 沈飞, 杨尧, 等. 核技术, 2011, 34(4):273.)
    [11] VYNCKER S. Radiat Prot Dosim, 2004, 110(1-4):565.
    [12] YAO Zeen, YUE Weiming, LUO Peng, et al. Atomic Energy Science and Technology, 2008, 42(5):400. (in Chinese) (姚泽恩, 岳伟明, 罗鹏, 等. 原子能科学技术, 2008, 42(5):400.)
    [13] LUO Peng, YAO Zeen, LIANG Yi, et al. Nuclear Techniques, 2008, 31(10):756. (in Chinese) (罗鹏, 姚泽恩, 梁一, 等. 核技术, 2008, 31(10):756.)
    [14] BERGAOUI K, REGUIGUI N, GARY C K, et al. Applied Radiation and Isotopes, 2014, 94:118.
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出版历程
  • 收稿日期:  2017-02-16
  • 修回日期:  2017-03-30
  • 刊出日期:  2017-12-20

基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究

doi: 10.11804/NuclPhysRev.34.04.762
    基金项目:  国家自然科学基金资助项目(11375077);国家重大科学仪器设备开发专项(2013YQ40861);兰州大学-中央高校基本科研业务费专项资金(lzujbky-2016-bt08)
    作者简介:

    张杰(1992-),女,江苏连云港人,硕士研究生,从事核能与核技术研究;E-mail:jiezhang14@lzu.edu.cn

    通讯作者: 姚泽恩,E-mail:zeyao@lzu.edu.cn。
  • 中图分类号: TL99

摘要: 中子照相是一种重要的无损检测技术,它能用于火工产品、毒品和核燃料元件等的检测。基于紧凑型D-T中子发生器,完成了一个用于快中子照相的准直屏蔽体系统(BSA)的物理设计。根据D-T中子源的能谱和角分布建立了中子源模型,采用MCNP4C蒙特卡罗程序,模拟了准直屏蔽体系统中中子和γ射线的输运,准直中子束相对于单位源中子的中子注量可以达到9.30×10-6 cm-2,准直中子束中主要是能量大于10 MeV的快中子;在设置的样品平面直径14 cm的照射视野范围,准直束中子注量的不均匀度为4.30%,准直束中中子注量与γ注量的比值为17.20,中子通量和中子注量比值J/Φ为0.992,说明准直中子束有好的平行性;准直屏蔽体外的泄露中子注量率与准直束中子注量率相比降低了2个量级。所设计的准直屏蔽体能满足快中子照相的要求。


Neutron radiography is an important nondestructive testing technique. It can be used to detect the explosive devices, drug and the nuclear fuel element, etc. A beam-shaping-assembly (BSA) based on a compact D-T neutron generator is designed for fast neutron radiography in this paper. D-T neutron source model is constructed based on the neutron energy spectrum and angular distribution data. The transportation of neutron and γ-ray in the BSA is simulated using MCNP4C code. The neutron fluence of the collimated neutron beam with respect to the neutron source of the unit source is 9.30×10-6 cm-2. The collimated neutron beams is mainly fast neutrons with energies greater than 10 MeV. In the irradiation field range with a diameter of 14 cm, the neutron fluence uniformity of the collimated beam is 4.3%, the ratio of the neutron fluence to the gamma fluence in the collimated beam is 17.20, and the neutron flux and the neutron fluence ratio (J/Φ) is 0.992 which indicates that the collimated neutron beam has good parallelism. The leakage neutron fluence in outside of BSA is two orders of magnitude lower than that of the collimated neutron beam. The designed BSA can meet the need of fast neutron radiography.

English Abstract

张杰, 王俊润, 张宇, 黄智武, 马占文, 李建一, 韦峥, 卢小龙, 徐大鹏, 姚泽恩. 基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究[J]. 原子核物理评论, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
引用本文: 张杰, 王俊润, 张宇, 黄智武, 马占文, 李建一, 韦峥, 卢小龙, 徐大鹏, 姚泽恩. 基于D-T紧凑型中子源的快中子照相准直屏蔽体设计及中子束特性模拟研究[J]. 原子核物理评论, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
ZHANG Jie, WANG Junrun, ZHANG Yu, HUANG Zhiwu, MA Zhanwen, LI Jianyi, WEI Zheng, LU Xiaolong, XU Dapeng, YAO Zeen. BSA Design and Simulation of the Beam Characteristic for the Fast Neutron Radiography Based on a Compact Neutron Generator[J]. Nuclear Physics Review, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
Citation: ZHANG Jie, WANG Junrun, ZHANG Yu, HUANG Zhiwu, MA Zhanwen, LI Jianyi, WEI Zheng, LU Xiaolong, XU Dapeng, YAO Zeen. BSA Design and Simulation of the Beam Characteristic for the Fast Neutron Radiography Based on a Compact Neutron Generator[J]. Nuclear Physics Review, 2017, 34(4): 762-767. doi: 10.11804/NuclPhysRev.34.04.762
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