Recent developments in multifilament V3Ga & Nb3Sn wires in Japan

The state of development of multifilament V
3
Ga and Nb
3
Sn wires in Japan is reviewed with emphasis on the former as it is principally in Japan that V
3
Ga has undergone the most intensive development. Commercial sources for these materials are identified. A brief discussion is presented of the effort on commercial development of multifilament V
3
Ga wire in the United States.