Patent ID: 7880574
Filing Date: 2011-02-01
Classification: G01R

Abstract:
1. A superconducting magnet comprising: first and second torus coolant containers substantially symmetrically arranged about a symmetrical plane in a vertical direction to have a space therebetween for storing a coolant and are disposed around a central axis, each of the first and second torus coolant containers including a main coil bobbin with a main coil for generating a measurement magnetic field, a shield coil bobbin with a shield coil for generating a shielding magnetic field for suppressing outside leakage of the measurement magnetic field, and a plate member vertically reinforced for supporting the shield coil bobbin and the main coil bobbin; a main coil bobbin supporting member connected to the plate member and the main coil bobbin for supporting the main coil bobbin with respect to the plate member; and a pillar comprising a vertical wall for supporting either of the first and second torus coolant containers in the vertical direction, wherein the plate member serves as a first wall of a helium container which is opposite to a second wall of the helium container which faces the symmetrical plane, the first and second torus coolant containers communicate with each other through the pillar, and the plate member is supported by the vertical wall, wherein the main coil bobbin of each of the first and second torus coolant containers is disposed at a first radial distance from the central axis and the shield coil bobbin of each of the first and second torus coolant containers is disposed at a second radial distance from the central axis, and wherein the second radial distance is greater than the first radial distance.