Magnetic field correction device with slotted passive shims

Details Magnetic field correction device with slotted passive shims Magnetic field correction device with slotted passive shims

1994-10-28

1995-10-31

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

335298, 324320, H01F 500, H01F 300, G01V 300

Patent

active

054633630

ABSTRACT:
A magnetic field correction device for enhancing magnetic uniformity of the field generated by a magnet includes plate-shaped shim elements provided with slots or holes for generating a desired corrective field component (the Bz.sup.11, the Bz.sup.21, or the Bz.sup.22 component). Thus, the shim elements exhibit the same length, thickness and width, and hence can be bundled easily together.

REFERENCES:
patent: 4206383 (1980-06-01), Anicich
patent: 4723116 (1988-02-01), Muller
patent: 4743853 (1988-05-01), Frese
patent: 4803433 (1989-02-01), McBride
patent: 4879538 (1989-11-01), Pausch
patent: 5003266 (1991-03-01), Palkovich et al.
patent: 5063934 (1991-11-01), Rapoport
patent: 5194810 (1993-03-01), Breneman
patent: 5229723 (1993-07-01), Sakurai
patent: 5235284 (1993-08-01), Tahara et al.

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