The Effect of Different Copper Discs on the Discharge of Superconducting Coils

High temperature superconducting (HTS) magnets often work at high energy density and have slow quench propagation speed, so a will present serious risk to the safety of magnets. The protection method based on dump resistance can effectively reduce current release in HTS However, too large may cause excessive voltage across A system consisting resistances metal discs has been proposed. Copper are embedded for conducting cooling mechanical support. In discharging process magnets, copper absorb from through magnetic coupling, thus accelerating decay This is more effective than using alone. this paper, effect different coils discussed. Eight types with residual resistivity ratios (RRR) applied. results show that increase RRR disc, rate coil increases, absorbed by disc increases. role fast be sorted as: = 300 > 100 80 60 40 30 20 10. shows best performance coils.