Related Experiment Video
Updated: Jun 14, 2026

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
Experimental demonstration of emittance compensation with velocity bunching
M Ferrario1, D Alesini, A Bacci
1INFN-LNF, Via Enrico Fermi, 40-00044 Frascati, Rome, Italy.
Abstract:
In this Letter we report the first experiments aimed at the simultaneous demonstration of the emittance compensation process and velocity bunching in a high brightness electron source, the SPARC photoinjector in INFN-LNF. While a maximum compression ratio up to a factor 14 has been observed, in a particular case of interest a compression factor of 3, yielding a slice current of 120 A with less than 2 microm slice emittance, has been measured. This technique may be crucial in achieving high brightness beams in photoinjectors aiming at optimized performance of short wavelength single-pass free electron lasers or other advanced applications in laser-plasma accelerators.
More Related Videos
Related Concept Videos
Propagation Speed of Electromagnetic Waves
Thomson's e/m Experiment
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
Motional Emf
Motion Of A Charged Particle In A Magnetic Field
The Hall Effect
Plane Electromagnetic Waves II

