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Superconducting magnetic coil

United States Patent

5,914,647
June 22, 1999
View the Complete Patent at the US Patent & Trademark Office
A superconducting magnetic coil includes a plurality of sections positioned axially along the longitudinal axis of the coil, each section being formed of an anisotropic high temperature superconductor material wound about a longitudinal axis of the coil and having an associated critical current value that is dependent on the orientation of the magnetic field of the coil. The cross section of the superconductor, or the type of superconductor material, at sections along the axial and radial axes of the coil are changed to provide an increased critical current at those regions where the magnetic field is oriented more perpendicularly to the conductor plane, to thereby increase the critical current at these regions and to maintain an overall higher critical current of the coil.
Aized; Dawood (Marlboro, MA), Schwall; Robert E. (Northborough, MA)
American Superconductor Corporation (Westborough, MA)
08/ 615,532
March 12, 1996
STATEMENT AS TO FEDERALLY SPONSORED RESEARCH This invention arose in part out of research pursuant to Subcontract No. 86X-SK700V awarded by the Department of Energy.