Title :
Development of 10 kA class Nb3Al superconducting cable by jelly-roll process [for fusion magnets]
Author :
Ando, T. ; Takahashi, Y. ; Nishi, M. ; Yamada, Y. ; Ohmatsu, K. ; Nagata, M.
Author_Institution :
JAERI, Ibaraki, Japan
fDate :
3/1/1991 12:00:00 AM
Abstract :
A multifilamentary Cu/Nb3Al composite strand was developed with a noncopper critical current density of more than 400 A/mm2 at 12 T, by a jelly-roll process. A 10-kA cable-in-conduit conductor was fabricated to demonstrate its applicability to fusion magnets. The cable had 324 strands, and a circular CuNi seamless pipe was used as the conduit. The strand diameter was 0.88 mm and the filament diameter was 28 μm. The heat treatment was performed at 820°C for 2 h
Keywords :
aluminium alloys; composite superconductors; critical current density (superconductivity); fusion reactor theory and design; heat treatment; niobium alloys; rolling; superconducting magnets; type II superconductors; 10 kA; 12 T; 2 h; 820 C; A15 superconductor; Cu matrix; Cu-Nb3Al; Nb3Al superconducting cable; cable-in-conduit conductor; critical current density; fusion magnets; heat treatment; hysteresis loss; jelly-roll process; multifilamentary composite; small coil fabrication; Aluminum; Copper; Critical current; Critical current density; Fabrication; Heat treatment; Niobium; Superconducting cables; Temperature; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
