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.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of High EnergyPhysics
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 859931
- Report Number(s):
- LBNL-57312; CBP Note - 685; R&D Project: 455301; BnR: KA1501020; TRN: US0504834
- Resource Relation:
- Conference: Frontiers of Nonlinear Physics, Nizhny NovgorodRussia, July 5-12, 2004
- Country of Publication:
- United States
- Language:
- English
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