Superconductive magnet apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorAkihiko Ariyoshi
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Abstract
To achieve a superconductive magnet apparatus which can suppress the consumption of liquid helium even if a quench phenomenon occurs in the superconductive coil to prevent a reduction in its cooling ability. The superconductive magnet apparatus comprises a superconductive coil 3 which is immersed in liquid helium 2 and stored in the helium container 1, an induction coil 12 which is magnetically coupled to the superconductive coil 3 and thermally insulated from the helium container 1 from each other, and a switching element 14 which forms a closed circuit 13 between both ends of the induction coil 12 when it is made active.
Claims10
A superconductive magnet apparatus comprising a helium container in which liquid helium is stored, a superconductive coil which is immersed in the liquid helium and stored in the helium container, radiation heat shields which are arranged to enclose the helium container, and a vacuum container arranged to enclose the radiation heat shields, for storing the helium container and the radiation heat shields in a vacuum atmosphere, wherein the apparatus further comprises an induction coil which is magnetically coupled to the superconductive coil and thermally insulated from the helium container, and a switching element which forms a closed electrical circuit between both ends of the induction coil when said switching element is made active, said closed circuit having a resistance which dissipates energy of the superconductive coil when said switching element is made active.
Dependencies are inferred from the claim text.