Patent ID: 11961661
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A superconducting magnet comprising:
a superconducting coil;
a refrigerant container to contain the superconducting coil in a state where the superconducting coil is immersed in a liquid refrigerant;
a vacuum container to contain the refrigerant container;
a discharge pipe connected to the refrigerant container from outside of the vacuum container, the discharge pipe discharging the refrigerant that has been vaporized;
a pair of external leads electrically connected respectively to opposite ends of the superconducting coil from a position outside of the vacuum container, so as to cause a current to flow through the superconducting coil; and
a protection circuit electrically connected to the superconducting coil, the protection circuit consuming energy stored in the superconducting coil during quenching,
the protection circuit being in contact with the discharge pipe outside of the vacuum container, wherein
the protection circuit is wrapped around the discharge pipe outside of the vacuum container,
the discharge pipe has a helical groove formed on its outer circumferential surface, with a direction in which the discharge pipe extends as an axial direction of a central axis of the groove, and
the protection circuit is wrapped around the discharge pipe so as to be located within the groove.