Phase-stable, microwave FEL amplifier

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Description

Free-electron laser (FEL) amplifiers have demonstrated high efficiency and high output power for microwave wavelengths. However, using present technology, microwave FEL amplifiers are not phase stable enough to be suitable for driving linear accelerators, where several much amplifiers need to be phase locked. The growing wave`s phase sensitivity to the beam voltage in the small-signal gain regime is responsible for the largest contribution to this phase instability. We discuss a scheme that reduces the phase sensitivity to the beam voltage by operating off synchronism and matching the phase variation resulting from the desynchronism to the phase variation from the reduced ... continued below

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5 p.

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Carlsten, B.E.; Fazio, M.V.; Haynes, W.B.; May, L. & Potter, M. July 1, 1995.

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Description

Free-electron laser (FEL) amplifiers have demonstrated high efficiency and high output power for microwave wavelengths. However, using present technology, microwave FEL amplifiers are not phase stable enough to be suitable for driving linear accelerators, where several much amplifiers need to be phase locked. The growing wave`s phase sensitivity to the beam voltage in the small-signal gain regime is responsible for the largest contribution to this phase instability. We discuss a scheme that reduces the phase sensitivity to the beam voltage by operating off synchronism and matching the phase variation resulting from the desynchronism to the phase variation from the reduced plasma wavenumber as the beam voltage changes.

Physical Description

5 p.

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OSTI as DE95014011

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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: DE95014011
  • Report No.: LA-UR--95-1386
  • Report No.: CONF-950512--238
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 83667
  • Archival Resource Key: ark:/67531/metadc784978

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  • July 1, 1995

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Feb. 26, 2016, 3:14 p.m.

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Carlsten, B.E.; Fazio, M.V.; Haynes, W.B.; May, L. & Potter, M. Phase-stable, microwave FEL amplifier, article, July 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc784978/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.