Patent ID: 9046587
Filing Date: 2015-06-02
Classification: A61B,G01R

Abstract:
1. A superconducting-magnet adjustment method for adjusting homogeneity of a magnetic field generated in a predetermined space by a superconducting magnet including a superconducting coil, comprising the steps of: measuring the magnetic field in said predetermined space; and performing shimming by arranging a plurality of shims of a ferromagnetic material in the superconducting magnet, said step of shimming including arranging said plurality of shims at positions that make the magnetic field homogeneous, based on a result of measurement in said step of measuring the magnetic field and that provide an electromagnetic force generating a reaction force which acts, in a radially inward direction of the superconducting magnet, on said superconducting coil so that said reaction force cancels and reduces an expansive force which acts in a radially outward direction on the superconducting coil in a condition where said shims are not attached.