| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive superconductive coil wherein the quantity of superconductive wires with respect to a necessary current capacity is reduced by reducing the magnetic field components in the vertical direction applied to a superconductor to be coiled, and reducing the iron loss for energizing with AC current. SOLUTION: In the superconductive coil obtained by coiling the superconductor 10 in the state of a cylindrical layer in the axial direction and the radial direction of a coil frame on the outer peripheral surface of a cylindrical coil frame 4, a magnetic field adjusting member 11 with magnetism is arranged through an electrical insulation member 9 consisting of electrical insulation material. The adjusting material 11 is obtained by dispersing powder consisting of magnetic material in a base material such as resin. In addition, the adjusting material 11 is provided with a slit for suppressing occurrence of eddy current communicating from the inner peripheral part to the outer peripheral part of a hollow disk at one or more places in a peripheral direction. COPYRIGHT: (C)2005,JPO&NCIPI |
