This paper describes the design and construction of the automatic calibration unit (ACU) for the JUNO experiment. The ACU is a fully automated mechanical system. It is capable of deploying multiple radioactive sources, an ultraviolet (UV) laser source, or an auxiliary sensor such as a temperature sensor, one at a time, into the central detector of JUNO along the central axis. It is designed as a primary tool to precisely calibrate the energy scale of detector, aligning timing for the photosensors, and partially monitoring the position-dependent energy scale variations.
Cite
@article{arxiv.2104.02579,
title = {The Automatic Calibration Unit in JUNO},
author = {Jiaqi Hui and Hancheng Liu and Jianglai Liu and Yue Meng and Mengjiao Xiao and Donglian Xu and Lei Yang and Ziping Ye and Feiyang Zhang and Tao Zhang and Yuanyuan Zhang},
journal= {arXiv preprint arXiv:2104.02579},
year = {2021}
}