The 9th International Conference on Matter and Radiation at Extremes (ICMRE2026) ( ICMRE2026)

206 / 2026-04-10 15:15:50

Beam Quality Optimization Strategies for LWFA based FELs

LWFA,XFEL

Fundamental Physics at Extremes > Radiation and High Energy Particle Generation

XFELs driven by LWFA-based e-beams are promising for generating high-brilliance X-ray lasers on a laboratory scale, and they are anticipated to enable significant applications. However, realizing FEL gain still a significant challenge, primarily due to the stringent requirements on beam quality, especially the energy spread and emittance, both on global and slice aspect. Here we introduce several strategies to optimise these parameters of e-beam within a down-ramp injection scheme in LWFA.