Title :
Insert model coil wound by Al/sub 2/O/sub 3/-Cu strengthened Nb/sub 3/Sn wire
Author :
Koyanagi, K. ; Nakayama, S. ; Murase, S. ; Nomura, S. ; Shimamura, K. ; Urata, M. ; Shiga, N. ; Awaji, S. ; Watanabe, K.
Author_Institution :
Res. & Dev. Center, Toshiba Corp., Kawasaki, Japan
fDate :
6/1/1997 12:00:00 AM
Abstract :
With the aim of fabricating large-bore, high-magnetic-field magnets with low coil weight and volume, an alumina-Cu reinforced Nb/sub 3/Sn wire of 1 km in length has been developed by improving the workability of the tube process. Two kind of insert model coils were made using the developed wire and the conventional Cu-matrix wire. The maximum quench current observed was 126 A in a backup field of 11 T, which corresponds to an electromagnetic force of 244 MPa. The coil strain for the reinforced coil was always smaller than that for the Cu-matrix coil.
Keywords :
alumina; composite superconductors; copper; electron device manufacture; mechanical strength; niobium alloys; stress-strain relations; superconducting coils; superconducting magnets; tin alloys; type II superconductors; 1 km; 11 T; 126 A; Al/sub 2/O/sub 3/; Al/sub 2/O/sub 3/-Cu strengthened Nb/sub 3/Sn wire; Al/sub 2/O/sub 3/-Cu-Nb/sub 3/Sn; Cu; Nb/sub 3/Sn; alumina-Cu reinforced Nb/sub 3/Sn wire; coil strain; high-magnetic-field magnets; insert model coil; large-bore magnets; low coil volume; low coil weight; tube process; Copper; Magnetic materials; Niobium; Niobium-tin; Powders; Superconducting coils; Superconducting filaments and wires; Superconducting magnets; Tin; Wounds;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
