Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers
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.
- Inventors:
- Issue Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1176631
- Patent Number(s):
- H000909
- Application Number:
- 07/505289
- Assignee:
- The United States of America as represented by the United States Department of Energy (Washington, DC)
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1990 Mar 19
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; statutory invention registration
Citation Formats
Danby, Gordon T., and Jackson, John W. Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers. United States: N. p., 1991.
Web.
Danby, Gordon T., & Jackson, John W. Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers. United States.
Danby, Gordon T., and Jackson, John W. Tue .
"Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers". United States. https://www.osti.gov/servlets/purl/1176631.
@article{osti_1176631,
title = {Method of correcting eddy current magnetic fields in particle accelerator vacuum chambers},
author = {Danby, Gordon T. and Jackson, John W.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 02 00:00:00 EST 1991},
month = {Tue Apr 02 00:00:00 EST 1991}
}
Works referenced in this record:
Vacuum System for the NAL Booster Synchrotron
journal, January 1971
- Hubbard, E. L.; Hanson, W. B.; Patel, U.
- IEEE Transactions on Nuclear Science, Vol. 18, Issue 3
Pole Face Winding (PFW) Equipment for Eddy Current Correction at the Zero Gradient Synchrotron (ZGS)
journal, January 1973
- Suddeth, D. E.; Schmitt, D. R.; Timm, R. E.
- IEEE Transactions on Nuclear Science, Vol. 20, Issue 3
Bending Magnets of the NAL Main Accelerator
journal, January 1971
- Hinterberger, H.; Satti, J.; Schmidt, C.
- IEEE Transactions on Nuclear Science, Vol. 18, Issue 3