Conveners
Novel acceleration and FEL concepts: Session-8
- Hideaki Ohgaki (Kyoto University)
The EuPRAXIA project offers the opportunity to produce free-electron laser radiations from accelerated electron beams using plasma technology in compact structures. Furthermore, the FELs radiations, in turn, represent a formidable tool to investigate matter at the sub-atomic level by generating coherent light pulses with sub-ångström wavelengths and sub-femtosecond durations. Achieving such a...
We report on electron-beam collimation using a passive plasma lens*, integrated directly into a laser wakefield-accelerator stage operating in the high-charge regime. The lens is created by the reshaping of the gas-density profile of a supersonic jet at the beam’s exit side. It reduces the beam’s divergence by a factor of 2 to below 1 mrad (rms), while preserving the total charge of 170 pC and...
Recent advancements in plasma-based accelerators have ignited "the race for wakefield-driven FELs" [1]. However, FELs at soft and hard X-ray wavelengths require electron beams with dramatically improved 6D brightness. The author presents comprehensive strategies towards generating ultra-high 6D brightness electron beams in beam-driven plasma wakefield acceleration (PWFA). These ultra-high 6D...
Inverse Compton scattering by relativistic electrons off intense laser pulses provides an attractive option for compact radiation sources in the (soft) X-ray spectral range. Tunability of the radiation wavelength is greatly increased by varying the crossing angle in the interaction. On the other hand, the radiated power from these sources is typically rather low, limiting the range of...
