Properties of the electron cloud in a high-energy positron and electron storage ring

Harkay, K. C.; Rosenberg, R. A.

doi:10.1103/PhysRevSTAB.6.034402

Title: Properties of the electron cloud in a high-energy positron and electron storage ring

Abstract

Low-energy, background electrons are ubiquitous in high-energy particle accelerators. Under certain conditions, interactions between this electron cloud and the high-energy beam can give rise to numerous effects that can seriously degrade the accelerator performance. These effects range from vacuum degradation to collective beam instabilities and emittance blowup. Although electron-cloud effects were first observed two decades ago in a few proton storage rings, they have in recent years been widely observed and intensely studied in positron and proton rings. Electron-cloud diagnostics developed at the Advanced Photon Source enabled for the first time detailed, direct characterization of the electron-cloud properties in a positron and electron storage ring. From in situ measurements of the electron flux and energy distribution at the vacuum chamber wall, electron-cloud production mechanisms and details of the beam-cloud interaction can be inferred. A significant longitudinal variation of the electron cloud is also observed, due primarily to geometrical details of the vacuum chamber. Furthermore, such experimental data can be used to provide realistic limits on key input parameters in modeling efforts, leading ultimately to greater confidence in predicting electron-cloud effects in future accelerators.

Authors:

Harkay, K. C. ^[1]; Rosenberg, R. A. ^[1]

Argonne National Lab. (ANL), Argonne, IL (United States)

Publication Date:: Thu Mar 20 00:00:00 EST 2003

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 15003703

Grant/Contract Number:: W-31-109-ENG-38

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Special Topics. Accelerators and Beams

Additional Journal Information:: Journal Volume: 6; Journal Issue: 3; Journal ID: ISSN 1098-4402

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: ENGLISH

Subject:: 43 PARTICLE ACCELERATORS; ACCELERATORS; ADVANCED PHOTON SOURCE; CLOUDS; ELECTRONS; ENERGY SPECTRA; PERFORMANCE; POSITRONS; PRODUCTION; PROTONS; SIMULATION; STORAGE RINGS; advanced photon source

Citation Formats


                    Harkay, K. C., and Rosenberg, R. A. Properties of the electron cloud in a high-energy positron and electron storage ring.  United States: N. p., 2003. 
Web.  doi:10.1103/PhysRevSTAB.6.034402.

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                    Harkay, K. C., & Rosenberg, R. A. Properties of the electron cloud in a high-energy positron and electron storage ring.  United States.  https://doi.org/10.1103/PhysRevSTAB.6.034402

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                    Harkay, K. C., and Rosenberg, R. A. Thu .  
"Properties of the electron cloud in a high-energy positron and electron storage ring".  United States.  https://doi.org/10.1103/PhysRevSTAB.6.034402.  https://www.osti.gov/servlets/purl/15003703.

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@article{osti_15003703,

  title        = {Properties of the electron cloud in a high-energy positron and electron storage ring},

  author       = {Harkay, K. C. and Rosenberg, R. A.},

  abstractNote = {Low-energy, background electrons are ubiquitous in high-energy particle accelerators. Under certain conditions, interactions between this electron cloud and the high-energy beam can give rise to numerous effects that can seriously degrade the accelerator performance. These effects range from vacuum degradation to collective beam instabilities and emittance blowup. Although electron-cloud effects were first observed two decades ago in a few proton storage rings, they have in recent years been widely observed and intensely studied in positron and proton rings. Electron-cloud diagnostics developed at the Advanced Photon Source enabled for the first time detailed, direct characterization of the electron-cloud properties in a positron and electron storage ring. From in situ measurements of the electron flux and energy distribution at the vacuum chamber wall, electron-cloud production mechanisms and details of the beam-cloud interaction can be inferred. A significant longitudinal variation of the electron cloud is also observed, due primarily to geometrical details of the vacuum chamber. Furthermore, such experimental data can be used to provide realistic limits on key input parameters in modeling efforts, leading ultimately to greater confidence in predicting electron-cloud effects in future accelerators.},

  doi          = {10.1103/PhysRevSTAB.6.034402},

  journal      = {Physical Review Special Topics. Accelerators and Beams},

  number       = 3,

  volume       = 6,

  place        = {United States},

  year         = {Thu Mar 20 00:00:00 EST 2003},

  month        = {Thu Mar 20 00:00:00 EST 2003}

}

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Works referenced in this record:

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journal, June 1995

Izawa, M.; Sato, Y.; Toyomasu, T.
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Works referencing / citing this record:

Effect of the surface processing on the secondary electron yield of Al alloy samples
journal, May 2013

Grosso, D. R.; Commisso, M.; Cimino, R.
Physical Review Special Topics - Accelerators and Beams, Vol. 16, Issue 5
DOI: 10.1103/physrevstab.16.051003

Effect of the surface processing on the secondary electron yield of Al alloy samples
text, January 2013

Grosso, D. R.; Commisso, M.; Cimino, R.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
DOI: 10.3204/desy-2013-00208

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Title: Properties of the electron cloud in a high-energy positron and electron storage ring

Abstract

Citation Formats

The Vertical Instability in a Positron Bunched Beam journal, June 1995

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journal, October 2000

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journal, August 1995

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journal, August 2001

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