Thermal and Vibration Characteristics of CSNS/RCS Ceramic Vacuum Chamber

Ceramic vacuum chamber is a key component of the rapid cycling synchrotron (RCS) of China Spallation Neutron Source (CSNS), which can avoid the eddy current generated by the dipole and quadrupole AC magnets due to the rapidly changing magnetic field. For the limitation of installation space, ceramic vacuum chamber was located on the magnet coils. During the long-time electric test of AC magnets, it was found that the ceramic vacuum chamber was broken at the welding point. In order to avoid the similar problems in later period, the thermal characteristics of the ceramic vacuum chamber were analyzed. At the same time, based on the binocular vision measurement technology, the vibration of the ceramic vacuum chamber was monitored. In view of the abnormal horizontal vibration of some vacuum chambers, it is determined that the influencing factor is the excessive magnetic permeability of the quick-release flange. Finally the research on the vibration damping technology of the ceramic vacuum chamber was carried out.