Patent ID: 8345392
Filing Date: 2013-01-01
Classification: H01F

Abstract:
1. An arrangement for a cryogenically cooled superconductive magnet comprising a plurality of superconductive coils connected in series and housed within a cryostat, comprising: first and second superconducting switches having superconductive current paths connected in series between terminals of the series arrangement of superconductive coils; and a resistor, external to the cryostat, electrically connected in parallel with the superconductive current path of the second superconducting switch, wherein the second superconductive switch is arranged to open in response to an electric current applied to an associated heater element provided in thermal contact with the superconductive current path of the second superconducting switch; wherein the heater element is connected between a node located between electrically adjacent superconductive coils and another node located between electrically adjacent superconductive coils or between the first and second superconducting switches.