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Title: Beam Conditioning and Harmonic Generation in Free ElectronLasers

The next generation of large-scale free-electron lasers (FELs) such as Euro-XFEL and LCLS are to be devices which produce coherent X-rays using Self-Amplified Spontaneous Emission (SASE). The performance of these devices is limited by the spread in longitudinal velocities of the beam. In the case where this spread arises primarily from large transverse oscillation amplitudes, beam conditioning can significantly enhance FEL performance. Future X-ray sources may also exploit harmonic generation starting from laser-seeded modulation. Preliminary analysis of such devices is discussed, based on a novel trial-function/variational-principle approach, which shows good agreement with more lengthy numerical simulations.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
859931
Report Number(s):
LBNL--57312; CBP Note - 685
R&D Project: 455301; BnR: KA1501020; TRN: US0504834
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: Frontiers of Nonlinear Physics, Nizhny NovgorodRussia, July 5-12, 2004
Research Org:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org:
USDOE Director. Office of Science. Office of High EnergyPhysics
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; AMPLITUDES; FREE ELECTRON LASERS; HARMONIC GENERATION; LASERS; MODULATION; OSCILLATIONS; PERFORMANCE; PHYSICS; X-RAY SOURCES