Energy stability in a high average power FEL

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Description

Recirculating, energy-recovering linacs can be used as driver accelerators for high power FELs. Instabilities which arise from fluctuations of the cavity fields are investigated. Energy changes can cause beam loss on apertures, or, when coupled to M{sub 56}, phase oscillations. Both effects change the beam induced voltage in the cavities and can lead to unstable variations of the accelerating field. Stability analysis for small perturbations from equilibrium is performed and threshold currents determined. Design strategies to increase the instability threshold are discussed and the high average power FEL proposed for construction at CEBAF is used as an example.

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4 p.

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Merminga, L. & Bisognano, J.J. December 31, 1995.

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Description

Recirculating, energy-recovering linacs can be used as driver accelerators for high power FELs. Instabilities which arise from fluctuations of the cavity fields are investigated. Energy changes can cause beam loss on apertures, or, when coupled to M{sub 56}, phase oscillations. Both effects change the beam induced voltage in the cavities and can lead to unstable variations of the accelerating field. Stability analysis for small perturbations from equilibrium is performed and threshold currents determined. Design strategies to increase the instability threshold are discussed and the high average power FEL proposed for construction at CEBAF is used as an example.

Physical Description

4 p.

Notes

INIS; OSTI as DE96013329

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  • 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (United States), 1-5 May 1995

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  • Other: DE96013329
  • Report No.: DOE/ER/40150--341
  • Report No.: CEBAF-PR--95-030;CONF-950512--386
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 377527
  • Archival Resource Key: ark:/67531/metadc679991

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  • December 31, 1995

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 11, 2015, 3:36 p.m.

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Merminga, L. & Bisognano, J.J. Energy stability in a high average power FEL, article, December 31, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc679991/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.