Title :
The RRR Parameter of the ITER Type Bronze-Route Cr-Coated Nb
Sn Strands After Different Heat Treatments
Author :
Abdyukhanov, I.M. ; Vorobieva, A.E. ; Dergunova, E.A. ; Polikarpova, M.V. ; Mareev, K.A. ; Traktirnikova, N.V. ; Novosilova, D.S. ; Pantsyrny, V.I. ; Lukyanov, P.A.
Author_Institution :
Bochvar Inst. (VNIINM), Moscow, Russia
fDate :
6/1/2012 12:00:00 AM
Abstract :
Residual Resistance Ratio (RRR) is one of the relevant parameters for strands and cables to be used in windings of high field magnet systems. The increase of the cable stability is provided by attaining of the high RRR-values. However, the RRR values of strands comprising the cable could deviate significantly from the average ones.
Keywords :
Tokamak devices; X-ray spectroscopy; annealing; bronze; chromium; mass spectroscopy; niobium alloys; plasma toroidal confinement; superconducting cables; superconducting coils; superconducting magnets; Cr-Nb3Sn; ITER type bronze route strands; RRR parameter; heat treatments; high field magnet system; residual resistance ratio; temperature 200 C to 700 C; time 100 hour to 200 hour; Annealing; Chromium; Copper; Heating; Niobium-tin; Temperature distribution; Cr diffusion; Cr plated $hbox{Nb}_{3}hbox{Sn}$ strands; residual resistance ratio (RRR);
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2011.2180281