Year: 2018
Type: article
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 the use of longitudinal density tailoring to reduce the beam chirp at the end of the accelerator. Experimental data sustained by quasi-3D particle-in-cell simulations show that broadband electron beams can be converted to quasimonoenergetic beams of ≤10% energy spread while maintaining a high charge of more than 120 pC. In the linear and quasilinear regimes of wakefield acceleration, the method could provide even lower, subpercent level, energy spread.
Source: Physical Review Letters
Institutions: Centre National de la Recherche Scientifique, École Polytechnique, École Nationale Supérieure de Techniques Avancées, Université Paris-Saclay, Laboratoire d'Optique Appliquée, École Nationale Supérieure de Techniques Avancées Paris, Ludwig-Maximilians-Universität München, Weizmann Institute of Science
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Awards: G1875511703, G2143444829, G2266951990, G2898032196, G31519724, Towards a ultra-compact X-ray Free Electron Laser, G3957211534, G4322581894, Femtosecond X-ray and optical studies of ultrafast photoswitching dynamics in molecular-based magnetic materials, Accelerator Research and Innovation for European Science and Society, Proposal for a Horizon 2020 Design Study on the “European Plasma Research Accelerator with eXcellence In Applications“ (EuPRAXIA)
OpenAlex ID: W2807320359