Magnetic field correction device

Details Magnetic field correction device Magnetic field correction device

1993-04-30

1994-08-30

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

324319, G01V 300, G01R 3320

Patent

active

053431839

ABSTRACT:
A magnetic field correction device for producing a uniform field within a coil includes non-magnetic tubes attached on a cylinder at specific circumferential angles .psi. to accommodate the non-magnetic tubes therein. Each of the magnetic shims consists of two rod members of predetermined lengths and transverse sectional area ratio. The end angles and the sectional area ratio A.sub.2 /A.sub.1 of the two rods satisfy specific relationships.

REFERENCES:
patent: 4639673 (1987-01-01), Zijlstra
patent: 4698611 (1987-10-01), Vermilyea
patent: 4743853 (1988-05-01), Frese
patent: 4748413 (1988-05-01), Frese
patent: 4758813 (1988-07-01), Holsinger et al.
patent: 4803433 (1989-02-01), McBride
patent: 4853663 (1989-08-01), Vermilyea
patent: 5045794 (1991-09-01), Dorri
patent: 5047720 (1991-09-01), Guy
patent: 5168231 (1992-12-01), Aubert
John H. Coupland, "Shimming Solenoidal Magnets", Rutherford Appleton Laboratory, Chilton, Oxfordshire, United Kingdom; pp. 174-179, 1987.
German Search Report, Feb. 2, 1993.

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