The effect of wiggler errors on FEL gain

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For an FEL operating in the exponential regime before saturation, we present an analytic description of the effect on the gain of longitudinal velocity variations arising from wiggler field errors. The average gain reduction and the width of the output power distribution are expressed in terms of the mean square average of the ponderomotive phase shift per gain length. A scheme for correcting the electron trajectory using position monitors and dipole correctors is analyzed. Our work is directly applicable to the design of FEL amplifiers and the results are encouraging for their feasibility. 13 refs., 3 figs.

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Pages: (34 p)

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Yu, L.H.; Krinsky, S. (Brookhaven National Lab., Upton, NY (United States)); Gluckstern, R.L. & van Zeijts, J.B.J. (Maryland Univ., College Park, MD (United States). Dept. of Physics) January 1, 1991.

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Description

For an FEL operating in the exponential regime before saturation, we present an analytic description of the effect on the gain of longitudinal velocity variations arising from wiggler field errors. The average gain reduction and the width of the output power distribution are expressed in terms of the mean square average of the ponderomotive phase shift per gain length. A scheme for correcting the electron trajectory using position monitors and dipole correctors is analyzed. Our work is directly applicable to the design of FEL amplifiers and the results are encouraging for their feasibility. 13 refs., 3 figs.

Physical Description

Pages: (34 p)

Notes

OSTI; NTIS; INIS; GPO Dep.

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  • 13. international free-electron laser (FEL) conference, Santa Fe, NM (United States), 25-30 Aug 1991

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  • Other: DE92000483
  • Report No.: BNL-46608
  • Report No.: CONF-9108118--8
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5334073
  • Archival Resource Key: ark:/67531/metadc1066049

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1991

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  • Feb. 4, 2018, 10:51 a.m.

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  • April 20, 2018, 7:04 p.m.

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Yu, L.H.; Krinsky, S. (Brookhaven National Lab., Upton, NY (United States)); Gluckstern, R.L. & van Zeijts, J.B.J. (Maryland Univ., College Park, MD (United States). Dept. of Physics). The effect of wiggler errors on FEL gain, article, January 1, 1991; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1066049/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.