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General ion-optical correction element
Author(s) -
H.D. Ferguson,
J.E. Spencer,
K. Halbach
Publication year - 1975
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/4050640
Subject(s) - multipole expansion , magnet , dipole , dipole magnet , physics , force between magnets , excited state , field (mathematics) , atomic physics , optics , computational physics , magnetic field , superconducting magnet , mathematics , demagnetizing field , quantum mechanics , magnetization , pure mathematics
A general purpose type of multipole magnet is described which provides some unique advantages. It produces a very uniform dipole field which can be rotated about the longitudinal axis of the magnet. Higher order multipoles can also be rotated and can be excited simultaneously without the use of independent coils. A magnet having octupole geometry was built and shown to verify the basic ideas. (auth

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