Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Plural load device systems
Patent
1990-03-19
1991-04-02
Wallace, Linda J.
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Plural load device systems
315 8, 315 85, H01J 2334, H01J 2906
Patent
active
H00009091
ABSTRACT:
A method for correcting magnetic field aberrations produced by eddy currents induced in a particle accelerator vacuum chamber housing is provided wherein correction windings are attached to selected positions on the housing and the windings are energized by transformer action from secondary coils, which coils are inductively coupled to the poles of electro-magnets that are powered to confine the charged particle beam within a desired orbit as the charged particles are accelerated through the vacuum chamber by a particle-driving rf field. The power inductively coupled to the secondary coils varies as a function of variations in the power supplied by the particle-accelerating rf field to a beam of particles accelerated through the vacuum chamber, so the current in the energized correction coils is effective to cancel eddy current flux fields that would otherwise be induced in the vacuum chamber by power variations in the particle beam.
REFERENCES:
patent: 3911321 (1975-10-01), Wardly
patent: 4362632 (1982-12-01), Jacob
patent: 4395691 (1983-07-01), Knauer
patent: 4701623 (1987-10-01), Beasley
"Vacuum System for the NAL Booster Synchrontron" by E. L. Hubbard et al., 1971 Particle Accelerator Conference, Accelerating Engineering and Technology, Chicago, Ill., U.S.A., (Mar. 1-3 1971), pp. 654, 655.
"Bending Magnets of the NAL Main Accelerator", by Hinterberger et al., 1971 Particle Accelerator Conference, Accelerator Engineering and Technology, Chicago, Ill., U.S.A., (Mar. 1-3 1971), pp. 853-856.
"Pole Face Winding (PFW) Equipment for Eddy Current Correction at the Zero Gradient Synchrotron (ZGS)", by D. E. Suddeth et al., Conference IEEE Trans. Nucl. Sci. (U.S.A.), vol. NS-20, No. 3, Jun. 1973, pp. 397, 398.
Danby Gordon T.
Jackson John W.
Anderson Thomas G.
Moser William R.
Myles Vale P.
The United States of America as represented by the United States
Wallace Linda J.
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