Construction of Cryostat Components for the CHMFL Hybrid Magnet Superconducting Outsert

A hybrid magnet, which is currently under construction at the High Magnet Field Laboratory of the Chinese Academy of Sciences (CHMFL), uses both Florida-Bitter-type resistive coils and Nb
₃
Sn-based cable-in-conduit conductor superconducting coils to produce 45-T central field in a 32-mm-diameter bore. As one of the main parts of the CHMFL hybrid magnet, the cryostat components of the superconducting outsert will provide the thermal barrier of the Nb
₃
Sn coils. Manufacturing of the main cryostat components, particularly the cryostat vessel, the thermal shield, the vacuum pumping units, and the overpressure protection device, has been completed. In this paper, the design and construction of the main cryostat components are going to be reported.