Conveners
FEL theory: Session-2
- Avraham Gover (Tel Aviv University)
In high-gain harmonic generation (HGHG) FEL, the amplification process is triggered by an extrernal seed laser that creates periodic energy modulation in the electron phase-space, which is then converted into a density modulation in a dispersive section. This density modulation presents strong current spikes at the seed laser wavelength that leads to the harmonic bunching in the forthcoming...
The soliton-like superradiant regime of free-electron lasers (FEL) offers a promising path towards ultrashort pulses, beyond the natural limit dictated by the bandwidth of the high-gain FEL instability. In this work we present a three-dimensional theory of the superradiant regime. Our work takes advantage of recent developments in non-linear FEL theory to provide a fully analytical description...
We present a fundamental QED theory for superradiance of bunched electrons - the enhanced coherent spontaneous emission of a correlated electron beam in an FEL configuration or in a variety of other free-electron radiation mechanisms. We derive the buildup of a quantum radiation state by multiple electrons in a configuration of a narrow beam of quantum electron wavepackets passing by a...
Predicting X-ray Free Electron Laser (XFEL) performance using Genesis simulation code is standard approach in designing future XFELs. Running this code is time consuming that slows down exploration of the parameter space during the design stage. Thus, using surrogate models based on machine learning techniques is often employed. These models however do not know about physics behind the...
