Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Superconductive type
Patent
1978-02-28
1980-08-19
Braun, Fred L.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Superconductive type
H01F 722
Patent
active
042186684
ABSTRACT:
A superconductive magnet device comprising a coil assembly having a plurality of coil sections stacked along a center axis of the coil assembly, each of the coil sections being formed by winding a composite superconductive wire, which exhibits different superconductivities in one direction to another direction perpendicular to the one direction in a cross section of the wire, in layers in a direction perpendicular to the center axis, wherein the critical current density in a direction parallel to the center axis in the innermost layer of at least a central one of the coil sections is larger than the critical current density in a circumferential direction of the coil assembly. The present superconductive magnet device can withstand quenching of the superconductive state at a higher magnetic field than conventional ones.
REFERENCES:
patent: 3406362 (1968-10-01), Revolinsky et al.
patent: 3913044 (1975-10-01), Albrecht et al.
Aihara Katsuzo
Tada Naofumi
Braun Fred L.
Hitachi , Ltd.
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