Patent ID: 6958898

Claim:
A device, comprising: a superconductor flux pump with a transformer, the transformer including, on a secondary side, at least one superconducting coil in a rectifier circuit and at least two controllable switches; and a superconducting coil of an electromagnet, wherein the pump feeds current into the superconducting coil, wherein the respective secondary-side coil of the transformer includes superconductor material with high critical temperature T c , wherein the flux pump and the superconducting coil of the electromagnet are arranged together in a common vacuum chamber of a cryostat, wherein each of the at least two controllable switches in the secondary-side rectifier circuit includes a plurality of MOSFETs electrically connected in parallel to one another, and wherein the MOSFETs are arranged on a base plate of a relatively high thermally conducting material.