论文标题
反应堆中微子物理学的低温纯-CSI晶体电位
Reactor neutrino physics potentials of cryogenic pure-CsI crystal
论文作者
论文摘要
本文介绍了从77 kelvin运行的0.5〜kg纯-CSI检测器测量的无机晶体中的世界领先的闪光灯产量。通过配备低温前端电子设备的两个2英寸Hamamatsu SIPM阵列检测到闪烁光子。在低温和SIPM的高光子检测效率下，使纯CSI的光产率提高，获得了X射线的光电量为30.1光电矿床，并获得了从5.9 〜KEV到59.6〜KEV的能量的$γ$ - 砂。仔细分析了在光屈服测量中的工具和物理效应。这是SIPM阵列在液体氮温度下进行数天的第一次稳定的纯CSI晶体读数的稳定低温操作。世界领先的光产量为在几个领域中使用纯-CSI晶体的使用打开了一扇门，尤其是在检测反应堆中微子的相干弹性中微子核散射时。本文讨论了在中微子物理学中使用纯-CSI晶体的潜力。
This paper presents a world-leading scintillation light yield among inorganic crystals measured from a 0.5~kg pure-CsI detector operated at 77 Kelvin. Scintillation photons were detected by two 2-inch Hamamatsu SiPM arrays equipped with cryogenic front-end electronics. Benefiting the light yield enhancement of pure-CsI at low temperatures and the high photon detection efficiency of SiPM, a light yield of 30.1 photoelectrons per keV energy deposit was obtained for X-rays and $γ$-rays with energies from 5.9~keV to 59.6~keV. Instrumental and physical effects in the light yield measurement are carefully analyzed. This is the first stable cryogenic operation of kg-scale pure-CsI crystal readout by SiPM arrays at liquid nitrogen temperatures for several days. The world-leading light yield opens a door for the usage of pure-CsI crystal in several fields, particularly in detecting the coherent elastic neutrino-nucleus scattering of reactor neutrinos. The potential of using pure-CsI crystals in neutrino physics is discussed in the paper.
