论文标题
通过正电子方向提高反应堆抗抗质能重建的能量分辨率
Improving the Energy Resolution of the Reactor Antineutrino Energy Reconstruction with Positron Direction
论文作者
论文摘要
能量分辨率对于反应器中微子实验至关重要，该实验旨在通过精确测量反应堆抗中质能谱来确定中微子质量排序。在通过反向β-纪念日（IBD）反应检测抗神经内肌时，反后中子和相应的正电子的动能的传播是在抗肿瘤能量分辨率中的不可忽略作用。 IBD反应中产生的正电子的发射方向可用于估计中子的动能，因此可以改善重建的抗神经抗体能量分辨率。为了证明可行性，在玩具液体闪烁体检测器（如Taishan antineutrino天文台（TAO））中实现了一种简单的正电子方向重建方法，每个MEV具有4500个光电收益。 TAO的5 MeV反应堆抗逆转录杆菌可实现4％至26％的能量分辨率。
The energy resolution is crucial for the reactor neutrino experiments which aims to determine neutrino mass ordering by precise measurement of the reactor antineutrino energy spectrum. A non-negligible effect in the antineutrino energy resolution is the spread of the kinetic energy of the recoiled neutron and the corresponding positron when detecting the antineutrinos via Inverse Beta-Decay (IBD) reaction. The emission direction of the produced positron in IBD reaction can be used to estimate the kinetic energy of neutron and thus the reconstructed antineutrino energy resolution can be improved. To demonstrate the feasibility, a simple positron direction reconstruction method is implemented in a toy liquid scintillator detector like the Taishan Antineutrino Observatory (TAO) with 4500 photoelectron yield per MeV. A 4% to 26% improvement of energy resolution can be achieved for 5 MeV reactor antineutrinos at TAO.
