Superconducting magnet and MRI apparatus

Abstract

In one embodiment, a superconducting magnet includes: at least one primary superconducting coil configured to generate a primary magnetic field; at least one secondary superconducting coil configured to generate a secondary magnetic field in a direction opposite to a direction of the primary magnetic field; and a superconducting shim coil configured to surround part or all of an outer surface of at least one of the at least one primary superconducting coil and the at least one secondary superconducting coil and corrects distribution of a static magnetic field generated by both the at least one primary superconducting coil and the at least one secondary superconducting coil.

Dependencies are inferred from the claim text.