Lindstrøm, CA;
Garland, JM;
Schröder, S;
Boulton, L;
Boyle, G;
Chappell, J;
D'Arcy, R;
... Osterhoff, J; + view all
(2021)
Energy-Spread Preservation and High Efficiency in a Plasma-Wakefield Accelerator.
Physical Review Letters
, 126
(1)
, Article 014801. 10.1103/PhysRevLett.126.014801.
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Abstract
Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread is a promising path to realizing compact free-electron lasers and particle colliders. High efficiency and low energy spread can be achieved simultaneously by strong beam loading of plasma wakefields when accelerating bunches with carefully tailored current profiles [M. Tzoufras et al., Phys. Rev. Lett. 101, 145002 (2008)PRLTAO0031-900710.1103/PhysRevLett.101.145002]. We experimentally demonstrate such optimal beam loading in a nonlinear electron-driven plasma accelerator. Bunches with an initial energy of 1 GeV were accelerated by 45 MeV with an energy-transfer efficiency of (42±4)% at a gradient of 1.3 GV/m while preserving per-mille energy spreads with full charge coupling, demonstrating wakefield flattening at the few-percent level.
| Type: | Article |
|---|---|
| Title: | Energy-Spread Preservation and High Efficiency in a Plasma-Wakefield Accelerator |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.126.014801 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.126.014801 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. |
| Keywords: | Particle acceleration in plasmas |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10119678 |
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