Method of preloading superconducting coils by using materials wi

Details Method of preloading superconducting coils by using materials wi Method of preloading superconducting coils by using materials wi

1990-08-23

1993-02-23

Gorski, Joseph M.

Metal working

Method of mechanical manufacture

Electrical device making

29605, H01L 3924

Patent

active

051878593

ABSTRACT:
The invention provides a high magnetic field coil. The invention provides a preloaded compressive force to the coil maintain the integrity of the coil. The compressive force is obtained by reinforcing the coil with two materials of different thermal expansion rates and then heating the coil to 700.degree. C. to obtain the desired compression. The embodiment of the invention uses Nb.sub.3 Sn as the conducting wire, since Nb.sub.3 Sn must be heated to 700.degree. C. to cause a reaction which makes Nb.sub.3 Sn superconducting.

REFERENCES:
patent: 1982852 (1934-12-01), Bergstrom et al.
patent: 4271585 (1981-06-01), Satti
patent: 4377905 (1983-03-01), Agatsuma et al.
patent: 4727346 (1988-02-01), Westphal et al.
Design and Analysis of a Superconducting Cable-In-Conduit Test Coil For Operation At 15 T and 40 A-mm-2 J. R. Heim et al.

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