论文标题
Juno-Tao实验的校准策略
Calibration Strategy of the JUNO-TAO Experiment
论文作者
论文摘要
Taishan抗神经天文台（Juno-Tao或Tao）是江门地下中微子天文台（Juno）的卫星检测器。 Tao位于Taishan反应堆附近，独立测量了反应器的抗肿瘤能量光谱，并以前所未有的能量分辨率测量。为了实现这一目标，必须校准能量响应。使用TAO的自动校准单元（ACU）和电缆环系统（CL），将多个放射性源部署到检测器中的各个位置，以执行能量响应的精确校准。通过这些放射性源的不同能量点，可以在0.6％的内控制非线性能量响应。使用$^{{12} \ rm b $衰减信号可以进一步改进，宇宙muons产生的信号。通过能量非均匀性校准，残留不均匀度小于0.2％。由于残留不均匀性引起的能量分辨率降解和能量偏置可以分别在0.05％和0.3％以内控制。此外，可以使用特殊的紫外线LED校准系统来监测其他检测器参数的稳定性，例如每个硅光化层的增益。
The Taishan Antineutrino Observatory (JUNO-TAO, or TAO) is a satellite detector for the Jiangmen Underground Neutrino Observatory (JUNO). Located near the Taishan reactor, TAO independently measures the reactor's antineutrino energy spectrum with unprecedented energy resolution. To achieve this goal, energy response must be well calibrated. Using the Automated Calibration Unit (ACU) and the Cable Loop System (CLS) of TAO, multiple radioactive sources are deployed to various positions in the detector to perform a precise calibration of energy response. The non-linear energy response can be controlled within 0.6% with different energy points of these radioactive sources. It can be further improved by using $^{12}\rm B$ decay signals produced by cosmic muons. Through the energy non-uniformity calibration, residual non-uniformity is less than 0.2%. The energy resolution degradation and energy bias caused by the residual non-uniformity can be controlled within 0.05% and 0.3%, respectively. In addition, the stability of other detector parameters, such as the gain of each silicon photo-multiplier, can be monitored with a special ultraviolet LED calibration system.
