Numerical studies of collinear laser-assisted injection from a foil for plasma wakefield accelerators
Wilson, T.C. and Farmer, J. and Pukhov, A. and Sheng, Z.-M. and Hidding, B. (2024) Numerical studies of collinear laser-assisted injection from a foil for plasma wakefield accelerators. Physical Review Accelerators and Beams, 27 (7). 071301. ISSN 2469-9888 (https://doi.org/10.1103/PhysRevAccelBeams.27.07130...)
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Abstract
We present a laser-assisted electron injection scheme for beam-driven plasma wakefield acceleration. The laser is collinear with the driver and triggers the injection of hot electrons into the plasma wake by interaction with a thin solid target. We present a baseline case using the AWAKE Run 2 parameters and then perform variations on key parameters to explore the scheme. It is found that the trapped witness electron charge may be tuned by altering laser parameters, with a strong dependence on the phase of the wake upon injection. Normalized emittance settles at the order of micrometres and varies with witness charge. The scheme is robust to misalignment, with a 1/10th plasma skin-depth offset (20 μm for the AWAKE case) having a negligible effect on the final beam. The final beam quality is better than similar existing schemes, and several avenues for further optimization are indicated. The constraints on the AWAKE experiment are very specific, but the general principles of this mechanism can be applied to future beam-driven plasma wakefield accelerator experiments.
ORCID iDs
Wilson, T.C. ORCID: https://orcid.org/0000-0002-6140-7045, Farmer, J., Pukhov, A., Sheng, Z.-M. ORCID: https://orcid.org/0000-0002-8823-9993 and Hidding, B. ORCID: https://orcid.org/0000-0002-5827-0041;-
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Item type: Article ID code: 90074 Dates: DateEvent29 July 2024Published8 July 2024Accepted22 January 2024SubmittedSubjects: Science > Physics > Plasma physics. Ionized gases
Science > Physics > Nuclear and particle physics. Atomic energy. Radioactivity
Science > Physics > Optics. LightDepartment: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 29 Jul 2024 15:12 Last modified: 01 Oct 2024 15:25 URI: https://strathprints.strath.ac.uk/id/eprint/90074