New Complex Put into Use at CSNS Campus Date: 2022-11-25 Author: A handover ceremony was held on Nov 3 to mark the official use of the photon source preliminary research complex at CSNS campus. Chen Yanwei, Deputy Director of the Institute of High Energy Physics, hosted the ceremony. The new complex is composed of a comprehensive experimental building, a high-precision measurement hall, a high-frequency hall, and an X-ray optics and detection technology hall, with a total construction area of 33,600 square meters. In November 2020, the structure of the first comprehensive experimental building was capped. This year, 850W@4.5K domestic helium refrigerator, vertical test dewar, precision experimental environment integration device and other key equipment have been successfully installed and commissioned before they were put into use.