The cryogenic control system of BEPCII Gang Li, Rui Ye, Mingjing Sang, Shaopeng Li, Zhuo Zhang, Jiehao Zhang, Ruixiong Han, Ge Lei and Rui Ge EPJ Techn Instrum, 8 1 (2021) 7 Published online: 13 April 2021 DOI: 10.1140/epjti/s40485-021-00064-9