密封容器中单个燃料棒的μ子射线照相
Muon Radiography to Visualise Individual Fuel Rods in Sealed Casks
摘要：
宇宙射线μ子可用于密封干燥储存桶中乏核燃料的非破坏性成像。穿过后的μ子的散射数据提供了关于由此穿透的材料的信息。基于这些性质，我们调查和讨论的理论上的可行性，检测单个失踪的燃料棒在一个密封的木桶首次。我们进行模拟的垂直站立的通用桶模型装载燃料组件从压水反应堆和μ介子探测器放置在桶的上方和下方。通过分析的散射角和应用的显着性比率的基础上的Kolmogorov-Smirnov检验统计量，我们得出结论，丢失的棒可以可靠地确定在一个合理的测量时间段内，这取决于它们的位置在组件和木桶，和上的角度接受标准的主要，传入μ子。
英文摘要：
Cosmic-ray muons can be used for the non-destructive imaging of spent nuclear fuel in sealed dry storage casks. The scattering data of the muons after traversing provides information on the thereby penetrated materials. Based on these properties, we investigate and discuss the theoretical feasibility of detecting single missing fuel rods in a sealed cask for the first time. We perform simulations of a vertically standing generic cask model loaded with fuel assemblies from a pressurized water reactor and muon detectors placed above and below the cask. By analysing the scattering angles and applying a significance ratio based on the Kolmogorov-Smirnov test statistic we conclude that missing rods can be reliably identified in a reasonable measuring time period depending on their position in the assembly and cask, and on the angular acceptance criterion of the primary, incoming muons.
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