Design of a shielding collimator system for fast neutron radiography with D-T neutron source

DOU Haifeng TANG Bin WU Yang

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Design of a shielding collimator system for fast neutron radiography with D-T neutron source

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- Design of a shielding collimator system for fast neutron radiography with D-T neutron source
- NUCLEAR TECHNIQUES Vol. 33, Issue 10, (2010)
- 作者机构：
  
  中国工程物理研究院核物理与化学研究所
- 作者简介：
- 基金信息：
  
  中国工程物理研究院科学技术发展基金(2008B0103002)资助
- DOI：
  CLC： TL816.3
- Published：01 October 2010
- 稿件说明：
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[1]窦海峰,唐彬,吴洋.D-T中子源快中子照相准直屏蔽系统设计[J].核技术,2010,33(10):754-759.

DOU Haifeng TANG Bin WU Yang. Design of a shielding collimator system for fast neutron radiography with D-T neutron source[J]. Nuclear techniques, 2010, 33(10): 754-759.
[1]窦海峰,唐彬,吴洋.D-T中子源快中子照相准直屏蔽系统设计[J].核技术,2010,33(10):754-759. DOI：

DOU Haifeng TANG Bin WU Yang. Design of a shielding collimator system for fast neutron radiography with D-T neutron source[J]. Nuclear techniques, 2010, 33(10): 754-759. DOI：

摘要

减少散射中子对成像质量的影响是快中子照相的关键技术之一。本文采用MCNP程序完成了D-T中子源快中子照相准直屏蔽系统的设计

该设计具有很好的中子散射屏蔽效果

能够将实验室墙壁的散射中子数量降低一个量级

大大减少了成像的对比度失真;同时

能够增加约20%的中子源强

提高了成像速度。

Abstract

A key point of fast neutron radiography (FNR) is to decrease the effect of scattered neutrons on the imaging. This gives a preferable design of a shielding collimator system for FNR with a D-T neutron source. M-C simulation results showed that the neutrons scattered from the walls could be decreased to about one tenth

and the effect of contrast distortion induced by scattered neutrons was greatly reduced. And intensity of the fast neutron source increased by 20%.

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The beam-shaping-assembly design and performance simulation of D-T neutron source for fast neutron therapy

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刘洋

Related Institution

School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China) 2

兰州大学教育部中子应用技术工程研究中心

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