Specification of the power supply for a 6-pole combined horizontal and vertical corrector magnet

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Description

Light Source Note LS-176 lists four types of corrector magnets and their power supply specifications. In order to simplify the AC operation of corrector magnets for closed orbit correction feedback, adopting a single type of corrector magnet for the whole ring is currently considered. This corrector magnet has six poles (an adaption from the ring sextupole magnet) and has coil windings producing independent horizontal and vertical bending fields. As in the other correctors, the vacuum chamber eddy current dominates the AC operation of the magnet which affects the voltage specification of the power supplies. In this note, the physical requirements ... continued below

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8 p.

Creation Information

Emergy, L. February 20, 1992.

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Description

Light Source Note LS-176 lists four types of corrector magnets and their power supply specifications. In order to simplify the AC operation of corrector magnets for closed orbit correction feedback, adopting a single type of corrector magnet for the whole ring is currently considered. This corrector magnet has six poles (an adaption from the ring sextupole magnet) and has coil windings producing independent horizontal and vertical bending fields. As in the other correctors, the vacuum chamber eddy current dominates the AC operation of the magnet which affects the voltage specification of the power supplies. In this note, the physical requirements of the magnets will be reviewed, and the relevant magnet and power supply parameters will be reported. A few assumptions on the local bump geometries have changed since the publication of LS-176. The inner correctors of the straight section bump have been moved about 0.15 m inwards to conform with current vacuum chamber design. This decreases the required magnet strengths by 15% relative to those in LS-176. As of the publication date of this report, the locations of the two outboard correctors of the straight section bump are set midway between the quadrupoles Ql and Q2. Moving these correctors closer to the Q2`s will further reduce the corrector strength required. Therefore, two results are presented: one with the two outward correctors remaining at their current design locations, and one with the outward correctors moved right up against quadrupole Q2. Also, the parameters for the bending magnet beamline bump are recalculated for a photon source placed 1/8th downstream of the entrance of the magnet.

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8 p.

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INIS; OSTI as DE95015202

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  • Other Information: PBD: 20 Feb 1992

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  • Other: DE95015202
  • Report No.: LS--188
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/104762 | External Link
  • Office of Scientific & Technical Information Report Number: 104762
  • Archival Resource Key: ark:/67531/metadc621680

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Office of Scientific & Technical Information Technical Reports

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  • February 20, 1992

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 1, 2016, 2:46 p.m.

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Thumbnail image of item number 1 in: 'Specification of the power supply for a 6-pole combined horizontal and vertical corrector magnet'.
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Citations, Rights, Re-Use

Emergy, L. Specification of the power supply for a 6-pole combined horizontal and vertical corrector magnet, report, February 20, 1992; Illinois. (digital.library.unt.edu/ark:/67531/metadc621680/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.