| 摘要 |
PURPOSE:To eliminate a reinforcing material and to simplify and facilitate inspection and maintenance by supporting an electromagnetic force by a rock board over the entire toroidal coil, and providing outlets of the individual coils between both coils. CONSTITUTION:A rock board 3 is punched in a torus shape, and the outer periphery of each superconductive coil 1 and hence the entire periphery of a toroidal coil 2 which includes the central side of the coil 2 and the outer peripheral side is supported in contact with the board 3. One outlet 5 per two coils 1 is provided radially at the board 3b between the both coils 1 and 1. According to this structure, since the entire outer periphery of the coil 1 is supported in contact to the board 3, an electromagnetic force is all supported at the board 3. Thus, since a special reinforcing material is not required, it is economic. Since the desired coil 1 may be moved to the outlet 5 and carried out for inspection and maintenance at inspection and maintenance time, the inspection and the maintenance can be simplified and facilitated. |
