MANUFACTURE OF SUPERCONDUCTIVE ELECTROMAGNET COIL

PURPOSE:To obtain a superconductive electromagnet coil having superior insulating performance, cooling performance, adhesion strength and cryoresistive performance by a method wherein when the superconducting coil is to be fixed on the surface of a cooling body interposing an insulating layer between them, a multiplex insulating layer consisting of a polyimide film, glass reinforced plastics and a heat-sensitive adhesive film is used as the insulating layer. CONSTITUTION:An adhesive resin layer 12 is applied on the inside surface of a cooling body 2, and a superconductive coil 4 is fixed thereon interposing a composite sheet 11 between them. At this construction, as the core material of the composite sheet 11, a polyimide film 6 processed to have rough surfaces according to a sand blast is used, and glass reinforced plastic sheets 7 are adhered to both the surfaces of the film thereof interposing epoxy resin adhesives 8 between them. Moreover a heat-sensitive adhesive layer 9 is adhered to the side to face with the cooling body 2, and an adhesion checking sheet 10 is sticked thereon. The composite sheet 11 is constructed in such a way, and when the adhesive layer 9 side is to be sticked to the cooling body 2 interposing butted parts 11A, 11B between them, sticking is performed by peeling off the sheet 10. Accordingly, the sheet 11 having no void, etc. can be obtained.