Title :
Experimental results of 40-kA Nb3Al cable-in-conduit conductor for fusion machines
Author :
Takahashi ; Sugimoto, M. ; Isono, T. ; Nakajima, H. ; Ando, T. ; Oshikiri, M. ; Hosono, F. ; Wadayama, Y. ; Sasaki, T. ; Hanawa, H. ; Seki, S. ; Wakabayashi, H. ; Hiyama, T. ; Tsuji, H. ; Yamada, Y. ; Takahashi, K. ; Nagata, M.
Author_Institution :
Superconducting Magnet Lab., JAERI, Ibaraki, Japan
fDate :
7/1/1994 12:00:00 AM
Abstract :
A 40-kA Nb3Al cable-in-conduit conductor has been developed for the toroidal field coils of fusion reactors, because Nb 3Al has excellent mechanical performance. This conductor consists of 405 copper-stabilized multifilamentary strands inserted into a CuNi circular conduit. The Nb3Al strands are fabricated by the Jelly-roll process with a diameter of 1.22 mm. This conductor could be operated up to a current of 46 kA at an external field of 11.2 T. Accordingly, Nb3Al promises to soon become a useful superconductor for large-scale high-field applications, such as fusion machines
Keywords :
Tokamak devices; aluminium alloys; composite superconductors; critical current density (superconductivity); fusion reactor materials; niobium alloys; superconducting cables; superconducting magnets; 40 kA; Cu; CuNi; Jelly-roll process; Nb3Al; cable-in-conduit conductor; circular conduit; critical current density; fusion machines; mechanical performance; multifilamentary strands; toroidal field coils; Assembly; Billets; Conductors; Copper; Critical current density; Density measurement; Manufacturing; Niobium; Superconducting coils; Wounds;
Journal_Title :
Magnetics, IEEE Transactions on
