| 摘要 |
PROBLEM TO BE SOLVED: To enhance the stability of a noncircular superconducting coil by a method wherein a self-fused wire in which the surface of an insulated and coated superconducting wire is covered in advance with a thermoplastic resin or with an insulating material containing a thermoplastic resin is used as a superconducting wire material and a support is arranged at least either on the outer circumferential side or the inner circumferential side in a part of a superconducting winding. SOLUTION: A self-fused wire 10 in which the surface of a superconducting wire 8 covered with formal 7 is coated with a phenoxy resin 9 is used, it is wound on an aluminum spool via an FRP sheet in which one face on the side of a winding is coated with a phenoxy resin, and a superconducting winding 13 is created. Then, while the superconducting winding 13 is being pressurized in its axial direction, it is heat-treated, and it is formed in an integrated race track shape. The bobbin is removed, two stainless steel supports in which their circumferential face 14 and their side-face side 15 are connected are connected further, and they are attached to the outer circumferential part in the straight line part of the superconducting winding 13. Thereby, a thermal stress between the superconducting winding 13 and the supports is reduced, and the stability of a superconducting coil is enhanced. |
