Electromagnet having a laminated ferromagnetic core and suppresses the superconducting film eddy magnetic field

摘要

A conductive winding disposed around the magnetic cores current through a ferromagnetic core and (50,72), conductive windings (34,76) so as to magnetize the ferromagnetic core, a conductive When sexual winding magnetizing the ferromagnetic core, the superconducting film which is provided to assist suppress eddy current cancellation superconducting current eddy currents generated in the ferromagnetic core and (60,80,82) , I disclose electromagnet with. Embodiment of a magnetic resonance scanner, the magnetic field gradient system comprising said plurality of electromagnets superimposed main magnet for generating a static magnetic field (20), the magnetic field gradient is selected to the stationary magnetic field (34,50,60) (30) and, I have.