It is the conductor which has possessed directivity the super-conductivity coil, vis-a-vis the side magnetic field where

摘要

PROBLEM TO BE SOLVED: To prevent a high-temperature superconducting coil from deteriorating in vertical magnetic field current characteristics and a high-temperature and a low-temperature superconducting coil from increasing in power loss due to a magnetic field which is generated at the edge of the superconducting coil, extending vertically in the axis of the coil or the magnetic fields of the other coils, without complicating the structure of the coil, wires, and conductors and furthermore decreasing the amount of superconductive wires and conductors used.;SOLUTION: A superconducting coil 10 is wound with conductors 11, equipped with parts which enables a current to flow, contain one or more superconducting wires, and have current characteristics or loss characteristics which are direction-dependent to a lateral magnetic field applied form the outside. The parts which enable a current to flow are wound with the conductors, 11, which are twisted so as to make their current characteristics or loss characteristics optical for the lateral magnetic field at mounting positions respectively.;COPYRIGHT: (C)2002,JPO