Dickson, L. T., Underwood, C. I.D., Filippi, F. et al. (16 more authors) (2022) Mechanisms to control laser-plasma coupling in laser wakefield electron acceleration. Physical Review Accelerators and Beams. 101301. ISSN 2469-9888
Abstract
Experimental results, supported by precise modeling, demonstrate optimization of a plasma-based injector with intermediate laser pulse energy (<1 J), corresponding to a normalized vector potential a0=2.15, using ionization injection in a tailored plasma density profile. An increase in electron bunch quality and energy is achieved experimentally with the extension of the density downramp at the plasma exit. Optimization of the focal position of the laser pulse in the tailored plasma density profile is shown to efficiently reduce electron bunch angular deviation, leading to a better alignment of the electron bunch with the laser axis. Single peak electron spectra are produced in a previously unexplored regime by combining an early focal position and adaptive optic control of the laser wavefront by optimizing the symmetry of the prefocal laser energy distribution. Experimental results have been validated through particle-in-cell simulations using realistic laser energy, phase distribution, and temporal envelope, allowing for accurate predictions of difficult to model parameters, such as total charge and spatial properties of the electron bunches, opening the way for more accurate modeling for the design of plasma-based accelerators.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Funding Information: This project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under Grant Agreement No. 730871. We acknowledge support from the Knut and Alice Wallenberg Foundation (Grant No. KAW 2019.0318) and the Swedish Research Council (Grant No. 2019-04784). We acknowledge the computing center MesoLUM managed by Institut des Sciences Moléculaires d’Orsay (UMR8214) and Laboratoire de Physique des Gaz et des Plasmas (UMR8578), University Paris-Saclay (France). Publisher Copyright: © 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 19 Dec 2022 14:30 |
Last Modified: | 25 Feb 2025 00:08 |
Published Version: | https://doi.org/10.1103/PhysRevAccelBeams.25.10130... |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevAccelBeams.25.101301 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:194594 |
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