Development of High Strength$rm Nb_3rm Sn$Wires With$rm Ta$-reinforced Filaments

Fundamental examinations were carried out of high strength bronze-processed
$ Nb_3 Sn$
wires with
$ Ta$
-reinforced filaments. A long
$ Nb_3 Sn$
wire with reinforced filaments was also trial-manufactured to test its practicality and its properties were measured. It is expected that
$ Nb_3 Sn$
wires with high strength and high critical current can be realized by reinforcing the filaments with
$ Ta$
. Our series of examinations and the trial-manufacture revealed the high potential usefulness of the wire in practical applications such as in superconducting magnets fabricated using the R&W method.