Abstract

Conductor on round core (CORC) is one of high temperature superconducting (HTS) conductors with large current capacity. CORC stacks HTS tapes to increase the current capacity. CORC can have various structures according to how we stack HTS tapes. The direction of the spiral winding in each layer and the overlapped area of HTS tapes affect AC losses of CORC because the losses mainly depend on the perpendicular magnetic fields on the HTS tapes. We have measured the magnetization losses of CORC short samples with various structures. Each sample has a different number of layers, winding direction in each layer, and overlapped area. We confirmed the best structure of CORC with the least magnetization loss.

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