2009/04/30 by C. Rechatin, X. Davoine, A. Lifschitz +8 · 1 citation
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #High-pressure geophysics and materials #Laser-Plasma Interactions and Diagnostics #Laser-induced spectroscopy and plasma #physics.acc-ph #physics.plasm-ph
paper · pdf · doi:10.1103/physrevlett.103.194804
published as Phys.Rev.Lett.103:194804,2009 · 10 pages,4 figures
arxiv created 2009/04/30 · openalex publication_date 2009/11/02 · arxiv updated 2010/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Beam loading is the phenomenon which limits the charge and the beam quality in plasma based accelerators. An experimental study conducted with a laser-plasma accelerator is presented. Beam loading manifests itself through the decrease of the beam energy, the reduction of dark current, and the increase of the energy spread for large beam charge. 3D PIC simulations are compared to the experimental results and confirm the effects of beam loading. It is found that, in our experimental conditions, the trapped electron beams generate decelerating fields on the order of 1 (GV/m)/pC and that beam loading effects are optimized for trapped charges of about 20 pC.