Energy Phase Correlation and Pulse Dynamics in Short Bunch High Gain FELs

Details Energy Phase Correlation and Pulse Dynamics in Short Bunch High Gain FELs Energy Phase Correlation and Pulse Dynamics in Short Bunch High Gain FELs

2010-11-05

arxiv.org/abs/1011.1341v1

Physics

Accelerator Physics

Scientific paper

We analyze the dynamics of Free Electron Laser (FEL) devices, operating with a bunched beam exhibiting a longitudinal phase space correlation. We show that the presence of an energy-position correlation term is responsible for very interesting effects like an enhancement of the peak output power, a shortening of the laser pulses and an increase of the non linearly generated harmonic intensities. We conjecture that the mechanism is due to a kind of energy tapering effect associated with the correlation. We discuss the difference of the dynamics with respect to an ordinary undulator tapering and the relative advantages.

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