Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1989-02-02
1996-12-03
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335216, 324318, H01F 700
Patent
active
055812236
ABSTRACT:
A superconducting magnet for producing a uniform magnetic field, including a main coil comprising first superconducting coils, and active shield comprising second superconducting coils and arranged in such a manner as to coaxially surround the main coil, and a self-shield comprising magnetic material and arranged in such a manner as to coaxially surround the active shield. The magnetic moment of the active shield is smaller in absolute value than and opposite in direction to the magnetic moment of the main coil.
REFERENCES:
patent: 4797646 (1989-01-01), Saji et al.
patent: 4803452 (1989-02-01), Saji et al.
Fujita Michiru
Ono Haruo
Fuji Electric & Co., Ltd.
Harris George
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