Impedance of the PEP-II DIP screen

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Description

The vacuum chamber of a storage ring normally consists of periodically spaced pumping slots. The longitudinal impedance of slots are analyzed in this paper. It is found that although the broad-band impedance is tolerable, the narrow-band impedance, as a consequence of the periodicity of the slots, may exceed the stability limit given by natural damping with no feedback system on. Based on this analysis, the PEP-II distributed-ion-pump (DIP) screen uses long grooves with hidden holes cut halfway to reduce both the broad-band and narrow-band impedances.

Physical Description

8 p.

Creation Information

Ng, C.K. & Weiland, T. September 1, 1995.

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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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Authors

  • Ng, C.K. Stanford Linear Accelerator Center, Menlo Park, CA (United States)
  • Weiland, T. Univ. of Technology, Darmstadt (Germany)

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Description

The vacuum chamber of a storage ring normally consists of periodically spaced pumping slots. The longitudinal impedance of slots are analyzed in this paper. It is found that although the broad-band impedance is tolerable, the narrow-band impedance, as a consequence of the periodicity of the slots, may exceed the stability limit given by natural damping with no feedback system on. Based on this analysis, the PEP-II distributed-ion-pump (DIP) screen uses long grooves with hidden holes cut halfway to reduce both the broad-band and narrow-band impedances.

Physical Description

8 p.

Notes

INIS; OSTI as DE96001088

Source

  • CEIBA95: international workshop on collective effects and impedance for B-factories, Tsukuba (Japan), 12-17 Jun 1995

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Identifier

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  • Other: DE96001088
  • Report No.: SLAC-PUB--95-7005
  • Report No.: CONF-9506279--2
  • Grant Number: AC03-76SF00515
  • DOI: 10.2172/125108 | External Link
  • Office of Scientific & Technical Information Report Number: 125108
  • Archival Resource Key: ark:/67531/metadc623404

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Creation Date

  • September 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 5, 2016, 7:18 p.m.

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Citations, Rights, Re-Use

Ng, C.K. & Weiland, T. Impedance of the PEP-II DIP screen, report, September 1, 1995; Menlo Park, California. (digital.library.unt.edu/ark:/67531/metadc623404/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.