Energy-chirp compensation in laser wakefield accelerators
Accelerator Physics
2018-08-22 v1 Plasma Physics
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.
Cite
@article{arxiv.1806.03338,
title = {Energy-chirp compensation in laser wakefield accelerators},
author = {A. Döpp and C. Thaury and E. Guillaume and F. Massimo and A. Lifschitz and I. Andriyash and J. -P. Goddet and A. Tazfi and K. Ta Phuoc and V. Malka},
journal= {arXiv preprint arXiv:1806.03338},
year = {2018}
}