Beams Document 170-v1

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Closed Orbit Effects Due to Longitudinal Bend Center Displacement

Document #:
Beams-doc-170-v1
Document type:
Note
Submitted by:
Ruth A. Becker
Updated by:
Bruce C. Brown
Document Created:
11 Dec 2002, 11:51
Contents Revised:
02 Apr 1996, 00:00
Metadata Revised:
02 Apr 1996, 00:00
Actually Revised:
12 Jun 2003, 17:59
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Beams-doc-170-v0
11 Dec 2002, 11:51
Abstract:
A longitudinal displacement of a dipole bend center will create a closed orbit distortion in a synchrotron. The bend center of a dipole or gradient magnet may be displaced from the mechanical center by non-uniform distribution of the dipole field. This will be illustrated using data from a prototype Main Injector 8 GeV Line dipole prototype. Orbit distortions due to magnet placement (survey) and magnet fabrication (longitudinal gradient) errors are calculated for single magnets. Effects of systematic errors on orbit dynamics will not be covered. Magnet measurement options for characterizing these errors will be discussed.
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  • pdf (zcenter.pdf, 197.0 kB)
  • ps (zcenter.ps, 174.1 kB)
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Publication Information:
MI-0162
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