SUPERCONDUCTIVE CURRENT LEAD

PROBLEM TO BE SOLVED: To provide a high-reliability superconductive current lead wherein the structure of a cylindrical support member is improved to enable assembly by preventing thermal interference at soldering and by individually soldering a unit conductor and a support member without having a problem of remelting or stripping of a soldered joint. SOLUTION: A plurality of unit conductors 6 including tape-like oxide superconducting wires, which are to be electric current paths, are distributed on the periphery of a cylindrical support member 7. The unit conductors 6 are provided so that the tape faces of the superconducting wires are disposed parallel with the peripheral direction of the cylindrical coordinate system. In the superconductive current lead connected with the unit conductors 6 by soldering, the cylindrical support member 7 is divided into a plurality of segments 7b each having a cross section shape becoming trapezoidal. A metallic film 8 is formed in the concave groove 7a formed in each segment 7b. Then the unit conductors 6 are individually soldered on the segments 7b. After that, the segments 7b are assembled in the peripheral direction to form the superconductive current lead 4. COPYRIGHT: (C)2011,JPO&INPIT