Simulation of natural radioactivity backgrounds in the JUNO central detector
Simulation of natural radioactivity backgrounds in the JUNO central detector
复制标题
JUNO 中央探测器中自然放射性本底的模拟
DOI：
10.1088/1674-1137/40/2/026001
复制
发表时间：
2016
影响因子：
3.6
通讯作者：
Xinying Li et al
中科院分区：
文献类型：
--
作者：
Xinying Li et al
江门地下中微子观测站（JUNO）是为确定中微子质量等级和探测中微子振荡的基本性质而提出的实验。JUNO中心探测器是一个球形液体闪烁体探测器，具有20千吨的流体质量。要求在极低的放射性本底下达到3%= pE（MeV）的能量分辨率，这对探测器的设计提出了很大的挑战。为了保证探测器的性能满足物理要求，需要对探测器进行可靠的仿真，为探测器的设计提供有用的信息。对JUNO中心探测器中的天然放射性背景进行了模拟研究，以指导探测器的设计，并确定对探测器材料放射性纯度的要求。JUNO中心探测器中天然放射性引起的事故本底为1.1/天。实验结果令人满意。
The Jiangmen Underground Neutrino Observatory (JUNO) is an experiment proposed to determine the neutrino mass hierarchy and probe the fundamental properties of neutrino oscillation. The JUNO central detector is a spherical liquid scintillator detector with 20 kton flducial mass. It is required to achieve a 3%= p E(MeV) energy resolution with very low radioactive background, which is a big challenge to the detector design. In order to ensure the detector performance can meet the physics requirements, reliable detector simulation is necessary to provide useful information for the detector design. A simulation study of natural radioactivity backgrounds in the JUNO central detector has been performed to guide the detector design and set requirements for the radio-purity of the detector materials. The accidental background induced by natural radioactivity in the JUNO central detector is 1.1/day. The result is satisfled for the experiment.