9 GeV Energy Gain in a Beam-Driven Plasma Wakefield Accelerator
Abstract
An electron beam has gained a maximum energy of 9 GeV per particle in a 1.3 m-long electron beam-driven plasma wakefield accelerator. The amount of charge accelerated in the spectral peak was 28.3 pC, and the root-mean-square energy spread was 5.0%. The mean accelerated charge and energy gain per particle of the 215 shot data set was 115 pC and 5.3 GeV, respectively, corresponding to an acceleration gradient of 4.0 GeV/m at the spectral peak. The mean energy spread of the data set was 5.1%. These results are consistent with the extrapolation of the previously reported energy gain results using a shorter, 36 cm-long plasma source to within 10%, evincing a non-evolving wake structure that can propagate distances of over a meter in length. Wake-loading effects were evident in the data through strong dependencies observed between various spectral properties and the amount of accelerated charge.
Keywords
Cite
@article{arxiv.1511.06743,
title = {9 GeV Energy Gain in a Beam-Driven Plasma Wakefield Accelerator},
author = {M Litos and E Adli and J M Allen and W An and C I Clarke and S Corde and C E Clayton and J Frederico and S J Gessner and S Z Green and M J Hogan and C Joshi and W. Lu and K A Marsh and W B Mori and M Schmeltz and N Vafaei-Najafabadi and V Yakimenko},
journal= {arXiv preprint arXiv:1511.06743},
year = {2016}
}
Comments
11 pages, 3 figures, Laser and Plasma Accelerators Workshop (LPAW) 2015 Proceedings