Superconducting switch, superconducting magnet and MRI
AssigneeHitachi, Ltd.
InventorsHideki Tanaka, Tsuyoshi Wakuda, Motomune Kodama, Akifumi Matsuda
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Abstract
A superconducting switch is provided in which the structural strength of the superconducting switch is kept, and thermal efficiency between a superconducting film and a heater is high when an ON state (superconducting state) and an OFF state (normal conducting state) of the superconducting switch are switched. The superconducting switch includes a substrate, a heater for generating heat by energization, a conductive film, and a MgB2 film evaporated on the conductive film. The heater, the conductive film and the MgB2 film are laminated in this order on one surface of the substrate.
Claims9
A superconducting switch comprising:
- a substrate;
- a conductive film;
- a MgB2 film evaporated on the conductive film;
- a current path made of the MgB2 film;
- and
- an electrode couple provided near an end of the current path, the electrode couple including heater electrodes provided on the conductive film at two points such that the heater electrodes sandwich the current path and are equally spaced from the end of the current path whereby the conductive film functions as a heater.
Dependencies are inferred from the claim text.