DocumentCode :
1124008
Title :
Development of Fine Multifilamentary 
Conductors
Author :
Banno, Nobuya ; Takeuchi, Takao ; Tanaka, Kazuhide ; Nakagawa, Kazuhiko ; Nimori, Shigeki ; Iijima, Yasuo ; Kikuchi, Akihiro
Author_Institution :
Nat. Inst. for Mater. Sci., Tsukuba, Japan
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2657
Lastpage :
2660
Abstract :
A new configuration of Nb3Al conductor with a fine multifilamentary structure is presented. The wire is fabricated by a simple re-stacking (RS) method, in which rapid-quenched ductile BCC Nb-Al phase wires are re-stacked into a stabilizing Cu tube and co-drawn into a final form. Such a simple stabilization method will be effective to cut the Nb3Al fabrication cost. The developed RS Nb3Al conductor has a non-Cu J c of almost about 1000 A/mm2 at 15 T, 4.2 K. The effective filament diameter is 14 mum and the hysteresis loss (+/- 3 T) is 370 mJ/cm3, which is small enough with respect to the ITER target specification.
Keywords :
Tokamak devices; aluminium alloys; copper; critical current density (superconductivity); ductility; magnetic hysteresis; multifilamentary superconductors; multifrequency antennas; niobium alloys; ITER target specification; Nb3Al-Cu; copper tube; critical current density; fine multifilamentary conductor structure; hysteresis loss; magnetic flux density 15 T; rapid-quenched ductile BCC Nb-Al phase wires; simple restacking method; simple stabilization method; size 14 mum; temperature 4.2 K; $n$ ${rm Nb}_{3}{rm Al}$ $J_{rm c}$
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2019132
Filename :
5153219
Link To Document :
