Affiliation:
1. ISBA Institute of Professional Studies, Indore, M.P., India
Abstract
The authors carried out a basic study on a power storage coil made of MgB2 superconducting wires which was expected to require less cooling and lower manufacturing costs. First, for manufacturing the storage coil, the basic characteristics of MgB2 superconducting wire were evaluated. The characteristics at 20 K under 1.5 T were a critical current of 170 A for the in-situ MgB2 wire and 200 A for the ex-situ MgB2 wire. Based on these results, MgB2 conductors and prototype storage coils were produced and their performance was evaluated. The prototype was successfully energized to 600 A under 1.5 T at less than 25 K, which are the basic requirements for several 10 kJ class coils, and there was no significant deterioration through conductor and coil processing.