AC Loss Analysis of a Model Coil for a 40 T Hybrid Magnet

A model coil for a 40 T hybrid magnet was designed and manufactured at the High Magnetic Field Laboratory of the Chinese Academy of Sciences (CHMFL); the model coil was wound with Nb₃Sn cable-in-conduit-conductors (CICC) and cooled with 4.5 K supercritical helium. The performance of the model coil was tested, and the performance tests included a DC charging test, AC losses test, temperature margin test, cyclic load test, and fast discharge test. The AC losses produced in the different operation scenarios of the tests were simulated and analyzed by a modified Gandalf code. The simulated AC losses will be presented and compared with the test results in this paper.