Free-electron laser beam quality

Effect of beam quality on the free-electron laser.

Single-pass High-gain Free Electron Laser Electron Beam Diagnostics

Consensus reached in the last few years that fourth generation light source will most likely be a X-ray or a UV coherent source based on single-pass high-gain free electron laser (FEL), such as Self Amplified Spontaneous Emission (SASE), or seeded high-gain harmonic -generation (HGHG) free electron lasers. High -gain (> 10) required for single-pass FEL puts great constrain on the quality of ele...

Simulation of Laser - Electron Beam Interaction in the Optical Klystron of a Free Electron Laser

The particle optics code GPT [1] has been applied to study the single pass electron beam interaction with an external laser field in the undulator system of a free electron laser. In particular, this code has been used to simulate the laser electron beam interaction in an optical klystron. Micro-bunching as a result of the interaction of the electron bunch with an electromagnetic pulse is prese...

Laser-electron Beam Dynamics of the European Free Electron Laser at Elettra

This paper gives an overview of both the experimental and theoretical studies which have been recently performed in order to characterise the laser-electron beam dynamics of the European Storage Ring Free Electron Laser at ELETTRA.

BEAM-BASED FEEDBACKS FOR THE FERMI@Elettra FREE ELECTRON LASER*

FERMI@Elettra is a new 4-generation light source based on a single pass Free Electron Laser (FEL) providing high peak-power photon pulses. It consists of a 1.5-GeV normal-conducting linac working at 50 Hz repetition rate and two chains of undulators where the photon beams are produced with a seeded laser multistage mechanism. A number of control loops, some of them working on a shot-by-shot bas...