Critical background for CE ν NS measurements at reactors
Critical background for CE ν NS measurements at reactors
复制标题
反应堆 CE ν NS 测量的关键背景
DOI：
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
A. Villano
中科院分区：
文献类型：
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作者：
A. Biffl;A. Gevorgian;K. Harris;A. Villano
中子俘获引起的核反冲可以产生与核反应堆测量的CE ν NS信号强烈重叠的光谱。在这项工作中，我们表明，对于这些测量，关键是环境保持低于10 - 4 n/cm 2 s的有效热中子中子（对于10 m处的1 MW反应堆），以便至少可以在5 σ水平上测量CE ν NS事件。提高探测器分辨率可以帮助测量，但热流是关键参数。这一目标是海平面10%左右，但需要在一个名义上的高10%（反应堆）的环境中实现。
Neutron capture-induced nuclear recoils can create a spectrum that strongly overlaps the CE ν NS signal for nuclear reactor measurements. In this work we show that for these measurements it is critical that the environment be kept below ∼ 10 − 4 n/cm 2 s in effective thermal neutron flux (for a 1 MW reactor at 10 m) so that the CE ν NS events can be measured at least at a 5 σ level. Improved detector resolution can aid the measurement, but the thermal flux is the key parameter. This flux goal is around 10% of the sea-level flux but needs to be achieved in a nominally high-flux (reactor) environment.