移动式加速器在快中子照相中的应用
Application of a removable accelerator to fast neutron imaging
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摘要: 介绍了移动式加速器的工作原理、结构和调试过程。该加速器具有体积小、重量轻、束流稳定度高、束斑直径小的特点。移动式加速器是首次在中国工程物理研究院应用于快中子照相。在调试过程中测试了小型移动式加速器的束流稳定性等参数，采用伴随粒子方法测量了直流中子产额。通过移动加速器和数字照相系统的组合，获得了初步图像。Abstract: Working principle and structure and debugging process of a mobile accelerator are introduced. The mobile accelerator, compact and light-weighted, can produce beam currents with high stability and small spot, and it is used in experiment of fast neutron imaging in our academy for the first time. In application process, some parameters including the beam current stability parameter are measured. Successive neutron yield is measured using concomitance particle means. Elementary images are acquired to fit the accelerator and the digital imaging system together．
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Key words:
- removable accelerator /
- fast neutron /
- digital radiography /
- neutron yield
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