| 摘要 |
PROBLEM TO BE SOLVED: To enhance stability by a method wherein a superconducting magnet system comprises a permanent current switch element composed of an oxide superconductor, a superconducting magnet composed of an oxide superconductor and a connection part for electrically connecting therewith, and all electric resistance of circuits as the time of permanent current mode driving is a specific value or less. SOLUTION: A permanent current switch 1 constituting a superconducting magnet system is a superconducting coil noninduction wound with an oxide superconductor and its outer periphery is noninduction wound with a heater wire. The heater wire is connected with a heater current lead 5. A superconducting magnet 3 is a superconducting coil composed of an oxide superconductor. Each of two oxide superconductors extending from the permanent current switch 1 and the superconducting magnet 3 are mutually connected to a connection part 2, and each of a pair of oxide superconductors reciprocated is connected to a magnet exciting current lead 4. All current resistance of circuits when forming a current loop is 10<-9>Ωor less. |
