Antineutrino monitoring for heavy water reactors.
Antineutrino monitoring for heavy water reactors.
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DOI：
10.1103/physrevlett.113.042503
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发表时间：
2014-03
影响因子：
8.6
通讯作者：
E. Christensen;P. Huber;P. Jaffke;T. Shea
中科院分区：
文献类型：
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作者：
E. Christensen;P. Huber;P. Jaffke;T. Shea
在本信中，我们讨论了反中微子监测作为一项不扩散措施对伊朗阿拉克的重水反应堆IR-40的潜在应用。在IR-40反应堆厂房外安装的地面探测器可以满足原子能机构对反应堆钚库存的核查目标。虽然具有所需光谱灵敏度的探测器已在地下得到演示，但还需要进行更多的研究和开发，以演示具有相同灵敏度水平的地面探测器。除了在运行期间监测反应堆外，观察长寿命裂变产物的反中微子排放也可以在反应堆关闭时监测反应堆，前提是可以实现非常低的探测器背景。反中微子监测还可用于区分不同的燃料浓缩水平。最重要的是，这些能力将不需要完整的反应堆运行历史，并可提供一种手段，在必要时重新建立保障结论中的知识连续性。
In this Letter we discuss the potential application of antineutrino monitoring to the Iranian heavy water reactor at Arak, the IR-40, as a nonproliferation measure. An above ground detector positioned right outside the IR-40 reactor building could meet IAEA verification goals for reactor plutonium inventories. While detectors with the needed spectral sensitivity have been demonstrated below ground, additional research and development is needed to demonstrate an above-ground detector with this same level of sensitivity. In addition to monitoring the reactor during operation, observing antineutrino emissions from long-lived fission products could also allow monitoring the reactor when it is shut down, provided very low detector backgrounds can be achieved. Antineutrino monitoring could also be used to distinguish different levels of fuel enrichment. Most importantly, these capabilities would not require a complete reactor operational history and could provide a means to reestablish continuity of knowledge in safeguards conclusions should this become necessary.