Superconducting wire and superconducting coil made therewith

Tape-shaped superconducting wires made by forming a superconducting film on the substrate,

• wherein at least the superconducting film part is electrically separated into a plurality of superconducting films with a rectangular cross section and arranged in parallel to form parallel conductors,
• wherein in view of the structure or arrangement of said superconducting coil, a coil structure containing at least partially a part wherein the perpendicular interlinkage magnetic flux acting among various conductor elements of said parallel conductors by the distribution of the magnetic field generated by the superconducting coils act to cancel each other is provided, and
• wherein if the superconducting coil is a coil by the pancake winding method, a plurality of said coil connection parts for connecting two pancake coils are provided on the inside and outside periphery of the coil, and at least a part of said coil connecting parts are the ones according to the separate connection method in which various conductor elements of the parallel conductors of said superconducting wires are electrically separately connected respectively, and the remaining coil connection parts are the ones according to the bundled connection method for superconducting wires, and the coil connecting parts are provided on the inside and outside periphery of the coil so that as a whole the interlinkage magnetic flux of the perpendicular magnetic field acting among various conductor elements of the parallel conductors of each pancake coil may cancel each other.