Energy-chirp compensation in laser wakefield accelerators

Abstract

The energy spread in laser-wakefield accelerators is primarily limited by the energy-chirp introduced during the injection and acceleration processes. Here we propose and demonstrate the use of longitudinal density tailoring to adapt the accelerating fields and reduce the chirp at the end of the accelerator. Experimental data supported by 3D PIC simulations show that broadband electron beams can be converted to quasi-monoenergetic beams of less than 10% energy spread while maintaining a high charge of more than 120 pC. In the linear and quasi-linear regimes of wakefield acceleration, the method could provide even lower, sub-percent level, energy spread.

References in corpus (8)

• Generating multi-GeV electron bunches using single stage laser wakefield acceleration in a 3D nonlinear regime
• Developments in laser-driven plasma accelerators
• Observation of longitudinal and transverse self-injections in laser-plasma accelerators
• Demonstration of relativistic electron beam focusing by a laser-plasma lens
• Temporal evolution of longitudinal bunch profile in a laser wakefield accelerator
• Energy boost in laser wakefield accelerators using sharp density transitions
• Chirp mitigation of plasma-accelerated beams using a modulated plasma density
• An all-optical Compton source for single-exposure X-ray imaging

Cited by in corpus (14)

• Physics of nanocoulomb-class electron beams in laser-plasma wakefields
• Correlated Energy Spread Compensation in Multi-Stage Plasma-Based Accelerators
• Dual-energy electron beams from a compact laser-driven accelerator
• Stable and high quality electron beams from staged laser and plasma wakefield accelerators
• Electron energy increase in a laser wakefield accelerator using longitudinally shaped plasma density profiles
• Generation of attosecond electron bunches and X-ray pulses from few-cycle femtosecond laser pulses
• Injection induced by coaxial laser interference in laser wakefield accelerators
• Intrinsic energy spread and bunch length growth in plasma-based accelerators due to betatron motion
• Electron Beam Chirp Dexterity in Staging Laser Wakefield Acceleration
• Dissipative instability of shock waves
• Tunable X-ray source by Thomson scattering during laser-wakefield acceleration
• Effect of electron-beam energy chirp on signatures of radiation reaction in laser-based experiments
• Quasi-monoenergetic multi-GeV electron acceleration in a plasma waveguide
• Simulation Study of Energy Chirp Induced Effects in Laser Wakefield Accelerator Driven Free Electron Laser