A Novel Quench Protection Technique for HTS Coils

A new coil winding method to realize quench-back with an over-current pulse for HTS magnet protection is proposed. The feature of the inter-wire bridged parallel winding (IPW) is that a large inductive voltage and additional eletro-magnetic force on the coil are not generated when the quench-back trigger current is imposed on the coil. A quench-back test was performed with a DI-BSCCO tape with a self-field at around 78 K. The applicability of the quench-back technique for a HTS coil is discussed.