Coil structure and coil container

Details Coil structure and coil container Coil structure and coil container

1992-03-25

1994-08-30

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Superconductive type

335300, 62 511, 336DIG1, H01F 100, H01F 500, F25B 1900

Patent

active

053431804

ABSTRACT:
There is disclosed a coil structure which can be rapidly energized or excited, and which reduces the generation of heat in a coil container by an eddy current due to a dynamic disturbance such as vibration and a magnetic field fluctuation, thereby suppressing the occurrence a quench. The coil container is constituted by a low-resistivity material, and a high-resistivity portion is provided at at least one portion of the coil container in the direction of the periphery of the coil container. The high-resistivity portion is provided at a position where a vibration displacement is small or a magnetic field fluctuation is small. When the coil structure is to be energized or excited, the eddy current produced in the direction of the periphery of the superconducting-coil container can be reduced at the high-resistivity portion, and when the dynamic disturbance develops, the generation of heat by the eddy current is suppressed by the low-resistivity material.

REFERENCES:
patent: 3360692 (1967-12-01), Kafka
patent: 4833434 (1989-05-01), Takechi
patent: 5148137 (1992-09-01), Purcell

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