9 GeV energy gain in a beam-driven plasma wakefield accelerator. (15th February 2016)

• Record Type: Journal Article
• Authors: Litos, M; Adli, E; Allen, J M; An, W; Clarke, C I; Corde, S; Clayton, C E; Frederico, J; Gessner, S J; Green, S Z; Hogan, M J; Joshi, C; Lu, W; Marsh, K A; Mori, W B; Schmeltz, M; Vafaei-Najafabadi, N; Yakimenko, V
• Is Part Of: Plasma physics and controlled fusion. Volume 58:Number 3(2016:Mar.)
• Publication Date: 2016-02-15
• Subjects: plasma wakefield acceleration -- advanced particle accelerator -- electron beam -- high accelerating gradient -- wake loading; Plasma (Ionized gases) -- Periodicals; Controlled fusion -- Periodicals; 530.44
• DOI: 10.1088/0741-3335/58/3/034017
• Languages: English
• ISSNs: 0741-3335

Abstract

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 −1 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.