| 摘要 |
PURPOSE:To enable to eliminate a shunt current to a by-pass resistor at excitation and extinction time of a superconductive coil, and to perform rapidly excitation and demagnetizing of magnetism by a method wherein a switch part is made to OFF according to a switch operating part directly after completion of fitting of current supply leads. CONSTITUTION:A superconductive switch 12 is connected in parallel between both the edges of a superconductive coil 11, and moreover, current leads 13 to supply a current to a superconductive coil 11 are connected respectively detachably to both the edges of the coil 11. While, a by-pass resistor 14 and a switch part 15 are connected in series between both the edges of the superconductive coil 11, and the switch part 15 is made to ON and OFF according to advancing and retreating transfers of a switch operating part 16. Accordingly, attachment and detachment of the current leads 13 to the superconductive coil 11, and ON and OFF of the switch part 15 can be performed by one-touch. The switch part 15 is made to OFF at excitation and demagnetizing time of the coil 11, no shunt current flows to the by-pass resistor 14, and excitation and demagnetization of the coil 11 can be performed rapidly. |
