散射介子射线照相及其在高z材料检测中的应用

2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515) Pub Date : 2003-10-19 DOI:10.1109/NSSMIC.2003.1351875

K. Borozdin, G. Hogan, C. Morris, W. Priedhorsky, A. Saunders, L. Schultz, M. E. Teasdale

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引用次数: 8

摘要

我们提出了一种基于宇宙射线介子射线成像的核材料违禁品探测新方法。这种方法是安全的，因为它不包括产生任何人工辐射，而是使用自然产生的高能μ子。我们的原型实验和模拟结果表明，该方法对于检测隐藏在不同类型普通货物中的高z材料是可行的。用于μ子探测的探测器技术是成熟的，使设计具有成本效益的μ子射线照相设备成为可能。图像重建不是微不足道的，可以通过各种方式完成。我们开发了用于图像重建的PoCA算法和用于检测高z材料的MC (μ子交叉)算法。我们对全尺寸μ子射线照相系统的模拟表明，对于隐藏在11吨均匀分布的铁中的20公斤铀，在1分钟内的检测效率很高，误报率很低。

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Scattering muon radiography and its application to the detection of high-Z materials

We have proposed a new method for nuclear material contraband detection based on cosmic ray muon radiography. The method is safe, because it does not include the generation of any artificial radiation, but uses naturally produced high-energy muons. Results obtained with our prototype experiment, and from simulations demonstrate the feasibility of the method for the detection of high-Z materials hidden inside different types of ordinary cargo. Detector technology for muon detection is mature and enables cost-effective design for a muon radiography apparatus. Image reconstruction is not trivial and may be done in various ways. We developed the PoCA algorithm for image reconstruction and the MC (muon crossing) algorithm for the detection of high-Z material. Our simulations of a full-scale muon radiography system suggest high efficiency of detection in 1 minute of exposure with a low number of false positives for a 20 kg of uranium hidden inside 11 tons of uniformly distributed iron.

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来源期刊

2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515)

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