Minimizing the Pacman effect

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Description

The Pacman bunches will experience two deleterious effects: tune shift and orbit displacement. It is known that the tune shift can be compensated by arranging crossing planes 900 relative to each other at successive interaction points (lPs). This paper gives an analytical estimate of the Pacman orbit displacement for a single as well as for two crossings. For the latter, it can be minimized by using equal phase advances from one IP to another. In the LHC, this displacement is in any event small and can be neglected.

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9 p.; Other: FDE: POSTSCRIPT; PL:

Creation Information

Ritson, D. October 1, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Ritson, D. Fermi National Accelerator Lab., Batavia, IL (United States)

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Description

The Pacman bunches will experience two deleterious effects: tune shift and orbit displacement. It is known that the tune shift can be compensated by arranging crossing planes 900 relative to each other at successive interaction points (lPs). This paper gives an analytical estimate of the Pacman orbit displacement for a single as well as for two crossings. For the latter, it can be minimized by using equal phase advances from one IP to another. In the LHC, this displacement is in any event small and can be neglected.

Physical Description

9 p.; Other: FDE: POSTSCRIPT; PL:

Notes

INIS; OSTI as DE98051100

Source

  • Other Information: PBD: Oct 1997

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  • Other: DE98051100
  • Report No.: FNAL-TM--2029
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/563144 | External Link
  • Office of Scientific & Technical Information Report Number: 563144
  • Archival Resource Key: ark:/67531/metadc689558

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Creation Date

  • October 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • April 1, 2016, 6:28 p.m.

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Ritson, D. Minimizing the Pacman effect, report, October 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc689558/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.