论文标题
基于重合的重建反应堆抗神经抗体检测，掺杂的Cherenkov检测器
Coincidence-based reconstruction for reactor antineutrino detection in gadolinium-doped Cherenkov detectors
论文作者
论文摘要
已经开发了一种重建算法，以利用Cherenkov技术的进步用于反应堆抗神经检测。 大型Gadolinium掺杂水（GD-H $ _2 $ O）Cherenkov探测器是一种开发技术，它使用GD载荷来增加β衰减（IBD）相互作用中的中子的可见性，该中子会产生正值 - 内部 - 独立型，在时间和空间中重合一致。在本文中，我们描述了使用IBD对中两个事件的合并光的重建，以准确地重建相互作用顶点。 该算法已应用于GD-H $ _2 $ O中的反应堆抗逆转录病毒的重建，并在GD掺杂的水性液体闪烁体（GD-WBLS）中，这是一种先进的检测器培养基，目前也在开发中。 与单事件重建相比，在最低能量下，联合重建的联合重建提高了反应堆IBD正电子的顶点分辨率高达4.5倍。在大多数情况下，发现IBD-Neutron顶点分辨率可以提高30％以上。 通过需要最低质量的拟合度，可以实现与巧合重建的强大背景拒绝。发现这拒绝了不相关的背景事件的意外巧合的94％，同时保留了至少97.5％的IBD信号对。
A reconstruction algorithm has been developed to capitalize on advances in Cherenkov technology for reactor antineutrino detection. Large gadolinium-doped water (Gd-H$_2$O) Cherenkov detectors are a developing technology which use Gd loading to increase the visibility of the neutrons produced in inverse beta decay (IBD) interactions, which produce positron-neutron pairs coincident in time and space. In this paper, we describe the reconstruction which uses the combined light from both events in an IBD pair to accurately reconstruct the interaction vertex. The algorithm has been applied to the reconstruction of reactor antineutrinos in Gd-H$_2$O and in Gd-doped water-based liquid scintillator (Gd-WbLS), an advanced detector medium which is also currently in development. Compared to a single-event reconstruction, the combined reconstruction improves vertex resolution for reactor IBD positrons by up to a factor of 4.5 at the lowest energies. IBD-neutron vertex resolution was found to improve by more than 30% in most instances. Powerful background rejection with the coincidence reconstruction can be achieved by requiring a minimum quality of fit. This was found to reject up to 94% of accidental coincidences of uncorrelated background events, while retaining at least 97.5% of the IBD signal pairs.
