Nonlinear Macroscopic Equations for Pulse Evolution in a High-Gain Compton Fel

TitleNonlinear Macroscopic Equations for Pulse Evolution in a High-Gain Compton Fel
Publication TypeJournal Article
Year of Publication1995
AuthorsG.HC van Werkhoven, T.J Schep
JournalNuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment
Volume358
Number1-3
Pagination485-488
Date PublishedApr 11
ISBN Number0168-9002
Abstract

The non-linear stage of the interaction between electron and light pulses is considered of a high-gain FEL. It is shown that the non-linear oscillations of the radiation intensity can be described analogously to the bouncing motion of a particle in a time-dependent, anharmonic potential. In case the electrons all have the same energy and bunching factor, the potential is constant in the steady state region of the light pulse. In this region, analytical solutions are in good agreement with the full solution. Using the same approximation also in the trailing edge of the light pulse, it is shown that the model provides a surprisingly good description of the physics involved.

DOI10.1016/0168-9002(94)01496-5
PID

63896a893cf51f9e683b09511f85e655

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