Integral shield for mr magnet

Details Integral shield for mr magnet Integral shield for mr magnet

1987-09-16

1988-09-13

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

174 15CA, 324370, 335216, H01F 700

Patent

active

047712562

ABSTRACT:
An integrally shielded magnetic resonance magnet is provided comprising a cylindrical ferromagnetic shell and two ferromagnetic circular end plates each defining a central aperture extending axially therethrough. The end plates are welded vacuum leak tight at their peripheries to either end of the shell. A nonmagnetic cylindrical tube is welded vacuum leak tight between the central apertures of the end plates forming an axially extending bore through the cylindrical shell. The ferromagnetic shell and end plates are heated with rust inhibiting coatings. The end plates, shell and nonmagnetic tube form a vacuum vessel and shield. Magnet windings are situated in the vacuum vessel synthesized for operating in the presence of the ferromagnetic vessel.

REFERENCES:
patent: 4490675 (1984-12-01), Knuettel et al.
patent: 4587504 (1986-05-01), Brown et al.
patent: 4646045 (1987-02-01), Chari et al.
patent: 4660013 (1987-04-01), Laskaris et al.
patent: 4694269 (1987-09-01), Burnett et al.

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