Stable particle acceleration in co-axial plasma channels
Plasma Physics
2019-10-30 v3 Accelerator Physics
Abstract
The attainable transformer ratio in plasma accelerators is limited by instabilities. Using three-dimensional particle-in-cell simulations, we demonstrate that these can be controlled using a hollow plasma channel with a co-axial plasma filament. The driver scatters electrons from the filament, and the slow pinch of the ions leads to a strong chirp of the effective betatron frequency, preventing beam breakup. We demonstrate the monoenergetic acceleration of an electron bunch to 20 GeV over 4.4 m, achieving a transformer ratio of 10, an energy efficiency of 40% and an emittance of 1.8 um.
Cite
@article{arxiv.1806.02123,
title = {Stable particle acceleration in co-axial plasma channels},
author = {Alexander Pukhov and John P. Farmer},
journal= {arXiv preprint arXiv:1806.02123},
year = {2019}
}