CSNS-II Double-Spoke Superconducting Cavity Cryomodule Integration and Horizontal Test Data Recording

In late 2023, China's first double-spoke superconducting cavity cryomodule, also the inaugural superconducting cavity module for CSNS-II, underwent horizontal testing at the Beijing Huairou Platform of Advanced Photon Source R & D （PAPS). The test results revealed that the double-spoke superconducting cavity achieved a maximum gradient of 15.2 MV/m, significantly surpassing the 9 MV/m required by beam dynamics, with a Q-value exceeding 3*10^10 at 10 MV/m. This success marks a significant milestone in the cryomodule's development, laying a solid foundation for the smooth construction of CSNS-II. The data recorded during the horizontal testing of the superconducting cavity cryomodule are crucial measurements of key parameters, which are of great significance for analyzing and evaluating the performance of the superconducting cavity.