The effect of laser pulse evolution on down‑ramp injection in laser wakefield accelerators
Jain, Arohi and Yoffe, Samuel R. and Ersfeld, Bernhard and Holt, George K. and Gupta, Devki Nandan and Jaroszynski, Dino A. (2024) The effect of laser pulse evolution on down‑ramp injection in laser wakefield accelerators. Scientific Reports, 14. 19127. ISSN 2045-2322 (https://doi.org/10.1038/s41598-024-69049-4)
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Abstract
Electron self-injection in laser wakefield accelerators (LWFAs) is an important determinator of electron beam parameters. Controllable and adjustable LWFA beams are essential for applications. Controlled injection by capturing sheath electrons can be achieved using plasma density down-ramps or bumps, which perturb the LWFA bubble phase velocity by varying the plasma frequency and by affecting relativistic self-focussing of the laser. We report on a comprehensive study, using particle-in-cell simulations, of the effect of laser pulse evolution on injection on density perturbations. We show how the LWFA can be optimised to make it suitable for use in a wide range of applications, in particular those requiring short duration, low slice-emittance and low energy spread, and high-charge electron bunches.
ORCID iDs
Jain, Arohi, Yoffe, Samuel R. ORCID: https://orcid.org/0000-0002-6723-4990, Ersfeld, Bernhard ORCID: https://orcid.org/0000-0001-5597-9429, Holt, George K., Gupta, Devki Nandan and Jaroszynski, Dino A. ORCID: https://orcid.org/0000-0002-3006-5492;-
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Item type: Article ID code: 90285 Dates: DateEvent19 August 2024Published19 August 2024Published Online31 July 2024Accepted11 December 2023SubmittedSubjects: Science > Physics > Plasma physics. Ionized gases Department: Faculty of Engineering > Electronic and Electrical Engineering
Faculty of Science > Physics
Technology and Innovation Centre > Advanced Science and TechnologyDepositing user: Pure Administrator Date deposited: 19 Aug 2024 10:53 Last modified: 09 Oct 2024 00:42 URI: https://strathprints.strath.ac.uk/id/eprint/90285