Superconducting Properties and Microstructure of V3Ga Wires Using High Ga Content TiGa3 and V2Ga5 Compounds.

V3Ga compound has a shorter radioactive decay time compared with Nb-based compounds and it will be one of the candidate superconducting magnet materials for advanced low activation fusion reactor systems including shutdown scenario and material recycle. Recently, we succeeded in developing new V3Ga multifilamentary wires fabricated via the Powder In-Tube (PIT) process using high Ga content Cu-Ga binary phase compounds. We also found that high Ga content in the precursor promoted the formation of the stoichiometric V3Ga phase and it was effective in improving superconducting properties. [ABSTRACT FROM AUTHOR]