R&D on HTS Wires in the Super-GM Project

The HTS wires have been developed for the application to electric power apparatuses in the Super- GM project. We made steady progresses in the fundamental wire characteristics and fabricated some trial products toward applications. The current capacities and the critical current densities of the Bi-2223, Bi-2212, Tl-1223 and Y-123 wires have been improved. A IkArms class AC lead and two types of Y-123 current limiting elements were trially fabricated and their properties were examined. As for the evaluation technique, Abrikosov decorated pattern of magnetic flux lines was observed for a Bi2212 single crystal using Bitter decoration technique.