Research and development of detector calibration system for next generation neutrino oscillation experiments

在本研究项目中，我针对下一代中微子振荡实验中的系统不确定度和灵敏度的提高进行了新的定标系统的研究和开发，在新的定标系统中，激光通过光纤送入探测器，并通过漫射球在探测器内部分布。通过导线操作，扩散球可以在探测器内部移动，从而可以在常规数据采集的同时进行探测器标定。通过原型系统的使用，证明了该系统能够正常工作。这可以被认为是在未来的实验中实施新的校准系统的一个里程碑。

In this research project, I have carried out research and development of new calibration system aiming for reduction in systematic uncertainty and improvement of sensitivity in next generation neutrino oscillation experiments.With the new calibration system, light from laser is fed into detector through optical fiber and distributed inside the detector via diffuser ball. The diffuser ball can be moved inside the detector by the wire operation, and therefore we can proceed detector calibration in parallel to the regular data taking.A small prototype calibration system was build during this research project. Using the prototype system, it was demonstrated that the system works as designed. This can be considered as a milestone to implement the new calibration system in the future experiment.