RESEARCH AND DEVELOPMENT OF SUPERCONDUCTING COILS FOR MAGLEV CARS

Intrinsically stabilized superconducting wires with a copper ratio of about two are used to conduct the trial manufacture of four different types of coils for the purpose of developing a light mass superconducting coil with high current density. These are designed so as to understand as systematically as possible how the differences in the structure and the method of manufacture might affect their performance. By testing their performances, it is learned that the superconducting wire with a copper ratio of about two can be made available for a large magnet with a high magneto-motive force. A lot of useful knowledge and techniques, for example, the effects of impregnation with epoxy resin, are also obtained. (AA)