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Proceedings Paper

Free-electron laser design operating in the SASE mode using the PALADIN wiggler
Author(s): Henry P. Freund; Patrick G. O'Shea; John M. J. Madey; Charles P. Neuman
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Paper Abstract

It is commonly assumed that a matched electron beam optimizes free-electron laser (FEL) performance; however, this assumption has not been proven for FELs operating in the high gain regime. We test this hypothesis using a 3D multimode analysis which is capable of modeling matched and unmatched electron beams and for design parameters suitable for a SASE experiment at Duke University using the PALADIN wiggler. The gain length predicted for a matched beam is in good agreement with analytic theory. Further, the simulation indicates that while the gain length is optimized for a matched beam the saturated power is not necessarily optimized.

Paper Details

Date Published: 1 November 1997
PDF: 6 pages
Proc. SPIE 3154, Coherent Electron-Beam X-Ray Sources: Techniques and Applications, (1 November 1997); doi: 10.1117/12.279384
Show Author Affiliations
Henry P. Freund, Science Applications International Corp. (United States)
Patrick G. O'Shea, Duke Univ. (United States)
John M. J. Madey, Duke Univ. (United States)
Charles P. Neuman, Duke Univ. (United States)


Published in SPIE Proceedings Vol. 3154:
Coherent Electron-Beam X-Ray Sources: Techniques and Applications
Andreas K. Freund; Henry P. Freund; Malcolm R. Howells, Editor(s)

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