A superconducting magnet is operated under cryogenic conditions.To effectively design a cryostat with high temperature superconducting (HTS) magnets,heat invasion loads—including conduction and radiation—should be minimized.These heat loads are closely related to the shape of the cryostat as well as to the HTS magnets,the metal current lead,and the cooling method used.A 300 kW-class HTS DC induction furnace (IF) is being developed,which should lead to the creation of an effective cryostat design.