Results from the coded aperture neutron imaging system
Results from the coded aperture neutron imaging system
复制标题
编码孔径中子成像系统的结果
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
J. Steele
中科院分区：
文献类型：
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作者：
P. Marleau;J. Brennan;E. Brubaker;J. Steele
高能中子和伽马射线（101 MeV）由于其穿透能力，为探测高度屏蔽或远距离特殊核材料（SNM）提供了最佳可能性。在这些中子中，快中子由于其非常低的自然背景和很好的理解而提供了最大的优势。我们正在研究一种新的快中子成像方法-编码孔径中子成像系统（CANIS）。编码孔径中子成像应提供一个高效的解决方案，提高检测速度，范围和灵敏度。我们已经使用编码掩模图案和探测器的几种不同配置演示了快中子和伽马射线成像，其中包括由中子探测器组成的“主动”掩模。在这里，我们描述了我们的原型探测器，并提出了一些初步的实验室测试和演示结果。
Because of their penetrating power, energetic neutrons and gamma rays (∼1 MeV) offer the best possibility of detecting highly shielded or distant special nuclear material (SNM). Of these, fast neutrons offer the greatest advantage due to their very low and well understood natural background. We are investigating a new approach to fast-neutron imaging — a coded aperture neutron imaging system (CANIS). Coded aperture neutron imaging should offer a highly efficient solution for improved detection speed, range, and sensitivity. We have demonstrated fast neutron and gamma ray imaging with several different configurations of coded masks patterns and detectors including an “active” mask that is composed of neutron detectors. Here we describe our prototype detector and present some initial results from laboratory tests and demonstrations.