Superconducting conductor having multiple transposed strands wit

Details Superconducting conductor having multiple transposed strands wit Superconducting conductor having multiple transposed strands wit

1990-07-05

1991-12-17

Picard, Leo P.

Electricity: conductors and insulators

With fluids or vacuum

With cooling or fluid feeding, circulating or distributing

174 154, 1741251, 505 1, 505704, 505885, 505886, 29599, H01B 1200, H01L 3924

Patent

active

050736795

ABSTRACT:
A superconducting conductor comprises a first fraction of prior-tinned strands (1, 3, 5, 7, 9, etc. . . . ) and an additional fraction of non-prior-tinned strands (2, 4, 6, 8, 10, etc., . . . ). The strands of the first fraction and of the additional fraction alternate regularly and are maintained in a coherent assembly after being assembled with transposition by heating to melt the layer of tin on the prior-tinned strands, with the tin from said layer then solidifying, thus providing substantially point adherence between the previously tinned strands while leaving channels (11, 12, etc. . . . ) inside the superconducitng conductor for cooling liquid circulation. The invention is also to a method of manufacturing such a superconducting conductor.

REFERENCES:
patent: 4176238 (1979-11-01), Vulis et al.
patent: 4195199 (1980-03-01), Hillmann et al.
patent: 4506109 (1985-03-01), Onishi et al.
patent: 4763404 (1988-08-01), Coffey et al.
patent: 4965245 (1990-10-01), Sugimoto et al.
IEEE Transactions of Magnetics, vol. MAG-11, No. 2, Mar. 1975, pp. 328-331; C. R. Walters: "Magnetization and design of multistrand superconducting conductors".

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