| 摘要 |
PURPOSE:To provide a superconducting device which uses a superconducting magnet capable of operating stably in permanent current mode. CONSTITUTION:This superconducting device provides a superconducting coil 1 and a permanent current switch 4. The permanent switch 4 uses a winding frame 7 made of a ferromagnetic body so as to unify a magnetic field distribution near the switch. This construction makes it possible to solve the shortage of magnetic field strength and instability resultant from time changes to the magnetic field strength in terms of the permanent current switch and provide a superconducting device highly stable and reliable as well. |
