Development of a High Jc Bronze Route Nb3Sn Conductor Using Nb-Ta Composite Filaments
For superconducting magnets generating fields above 10 tesla, multifilamentary Nb3Sn is the conductor of choice. There are two widely used methods of manufacturing these conductors, namely the internal Sn route and bronze process. Bronze route conductors can yield long piece lengths with consistent performances due to the mechanical compatabilities of the components compared to internal Sn conductors. Internal Sn designs require a soft low melting point Sn and is more difficult to be co-processed with the significantly harder Nb filaments. This paper summarizes the development of a bronze route Nb3Sn wire with high Jc using Nb-Ta composite filaments for use in advanced projects such as the International Thermonuclear Experimental Reactor (ITER).
KeywordsDiameter Wire Filament Size Transverse Cross Section International Thermonuclear Experimental Reactor Filament Diameter
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- 1.R.Flukiger, W. Specking, M. Klemm, S. Gauss “Composite core Nb3Sn wires: preparation and characterization” IEEE Trans. on Mag., Vol. 25, No. 2, pp 21922199, March 1989Google Scholar
- 2.M. Klemm, E.Seibt, W. Specking, J.Q. Xu, R. Flukiger, “Enhancement of Jc at 1012 T in Nb3Sn wires by artificial Ta inclusions distributed at a nanometer scale” Superconductors, Science and Technology, Vol. 3, No. 5, pp 249, 1990Google Scholar
- 3.R. Flukiger, Unpublished Work, Presented at ICMC, Huntsville Ala., 1991Google Scholar
- 5.LLNL, ITER Wire Specification, SK-91–150, November 8, 1991Google Scholar