Patent ID: 8354907
Filing Date: 2013-01-15
Classification: H01F

Abstract:
1. A superconducting coil assembly comprising: a plurality of coil units composed of superconducting material each coil unit has an axis, and the coil units are arranged coaxial to a same axial direction; magnetic field adjusting members composed of ferrite, powder metallurgical core, or permendur powder, which have higher magnetic permeability than the superconducting material and are provided in the vicinities of said coil units; the magnetic field adjusting members each have the shape of a ring with a ring axis coaxial to each axis of said coil units; and inner ring members provided on diameter-direction inner sides of the magnetic field adjusting members, and outer ring members provided separately on diameter-direction outer sides of the magnetic field adjusting members, the inner and the outer ring members are larger than the magnetic field adjusting members in the axial direction.