Title :
An alternative CICC design aimed at understanding critical performance issues in Nb3Sn conductors for ITER
Author :
Pasztor, Gabriel ; Bruzzone, Pierluigi ; Anghel, Alexander ; Stepanov, Boris
Author_Institution :
CRPP-FT, Villigen-PSI, Switzerland
fDate :
6/1/2004 12:00:00 AM
Abstract :
Within the EFDA technology program, CRPP designed and prepared a short length of full size Nb3Sn developmental conductor to be tested in the SULTAN test facility. Nb3Sn strand with a higher specification and low Cu:non-Cu ratio was supplied by Outokumpu. Half of the produced wire length has been Cr-plated half was left bare. Subsequently, two Ti-jacketed cable-in-conduit conductors based on a braid as the first stage, have been manufactured by VNIIKP. After reaction heat treatment, the annular space of the conductor piece without coating was filled with solder. The measurements indicate a higher performance of the solder-filled conductor suggesting that an adequate mechanical support of the strands in the cable may avoid transverse load degradation.
Keywords :
Tokamak devices; bending; copper; critical currents; design; fusion reactor design; heat treatment; niobium alloys; solders; superconducting cables; superconducting coils; superconducting magnets; tin alloys; type II superconductors; CICC design; Cr; Cr plating; Cu; EFDA technology program; ITER; Nb3Sn; Nb3Sn developmental conductor; SULTAN test facility; Ti; Ti jacketing; VNIIKP; braided design; cable-in-conduit; critical current; critical performance; heat treatment; mechanical support; solder filling; strand; transverse load degradation; voltage-current characteristic; Coatings; Conductors; Heat treatment; Manufacturing; Niobium; Space heating; Test facilities; Testing; Tin; Wire; Cable-in-conduit; conductor; critical current; transverse load; voltage current characteristic;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.830686
