Use of CEvNS to monitor spent nuclear fuel

Use of CEvNS to monitor spent nuclear fuel
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使用 CEvNS 监测乏核燃料

DOI:
10.1103/physrevd.105.056002
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发表时间:
2022
期刊:
影响因子:
5
通讯作者:
Huber, Patrick
Huber, Patrick
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
von Raesfeld, Caroline;Huber, Patrick

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越来越多的乏核燃料(SNF)被长期储存在干式储存桶中。到目前为止,还没有有效的技术来恢复木桶内容物,如果这是必要的。我们探索了相干-弹性中微子-核散射(CEvNS)在监测干式储存桶中SNF含量方面的适用性。SNF主要从衰变中产生中微子。我们将这些结果与通过逆贝塔衰变(IBD)获得的结果进行了比较。我们证明在低核反冲能量下,对于给定的探测器质量,CEvNS事件率比IBD事件率高2-3个数量级。我们发现,如果能够达到低于100千电子伏特的核反冲阈值,距离燃料桶3米处的10公斤Ar或Ge探测器每年可以探测到100多次事件。
Increasing amounts of spent nuclear fuel (SNF) are stored in dry storage casks for prolonged periods of time. To date no effective technology exists to reverify cask contents should this become necessary. We explore the applicability of coherent-elastic neutrino-nucleus scattering (CEvNS) to monitor the content of SNF from dry storage casks. SNF produces neutrinos chiefly fromdecays. We compare these results with what can be achieved via inverse beta decay (IBD). We demonstrate that at low nuclear recoil energies CEvNS events rates exceed the IBD event rates by 2–3 orders of magnitude for a given detector mass. We find that a 10 kg argon or germanium detector 3 meters from a fuel cask can detect over 100 events per year if a nuclear recoil threshold under 100 eV can be achieved.
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