AI 中文总结
本文针对小型中微子探测器，利用液体闪烁体材料及SiPMs收集电荷信息，采用基于模板的方法，借助模拟数据、放射源校准数据的响应函数构建似然函数，实现事件能量和半径重建，适用于类似球形中微子探测器实验。
AI 中文摘要
小型中微子探测器是吨级探测器，可放置在核电站堆芯附近，一些探测器使用液体闪烁体（LS）材料。反应堆堆芯的反中微子落在探测器的液体闪烁体上，通过逆β衰变过程沉积能量，能量以闪烁形式重新发射，光子穿过闪烁材料击中安装在探测器球形铜壳内表面的硅光电倍增管（SiPMs）产生电荷输出信号，利用SiPMs收集的电荷信息进行能量和半径重建。由于大光覆盖、高光子探测效率、小球形探测器尺寸和低温运行等因素，小型LS探测器能实现前所未有的能量分辨率。本文使用基于模板的方法，利用模拟数据重建事件半径和能量，该方法使用由放射源校准数据生成的响应函数和电荷信息，通过构建并最大化似然函数来重建事件的能量和半径，此方法适用于所有类似尺寸的球形中微子探测器实验。
英文摘要
Small neutrino detectors are a ton level detectors which can be placed very close to the core of Nuclear Power Plant. In some detectors liquid scintilling (LS) material is used as the detecting material. The antineutrinos from the reactor core fall on the liquid scintillator of the detector where they deposit energy via Inverse Beta Decay process (IBD). The energy absorbed by liquid scintillator is re-emitted in the form of scintillation. These photons then travel through the scintillating material and hit the Silicon Photo Multipliers (SiPMs) which are installed on the inner surface of detector's spherical copper shell. These SiPMs absorb the photons to give a charge output signal. The energy and radius reconstruction is done using the information of charge collected by the SiPMs. Due to factors like large photo-coverage with large photon detection efficiency, small spherical detector size and low temperature operation, small size LS detectors can achieve an unprecedented energy resolution. In this paper, we have used a template-dependent method exploiting simulated data to reconstruct the event radius and energy. This method uses response functions generated using radioactive source calibration data and the charge information to reconstruct the energy and the radius of the event by constructing maximizing a likelihood function. This methodology is applicable to all similar size spherical neutrino detector experiments.
Comments10 figures, 13 pages
