Maitrallain, A;
Brunetti, E;
Streeter, MJ;
Kettle, B;
Spesyvtsev, R;
Vieux, G;
Shahzad, M;
... Jaroszynski, DA; + view all
(2022)
Parametric study of high-energy ring-shaped electron beams from a laser wakefield accelerator.
New Journal of Physics
, 24
(1)
, Article 013017. 10.1088/1367-2630/ac3efd.
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Abstract
Laser wakefield accelerators commonly produce on-axis, low-divergence, high-energy electron beams. However, a high charge, annular shaped beam can be trapped outside the bubble and accelerated to high energies. Here we present a parametric study on the production of low-energy-spread, ultra-relativistic electron ring beams in a two-stage gas cell. Ring-shaped beams with energies higher than 750 MeV are observed simultaneously with on axis, continuously injected electrons. Often multiple ring shaped beams with different energies are produced and parametric studies to control the generation and properties of these structures were conducted. Particle tracking and particle-in-cell simulations are used to determine properties of these beams and investigate how they are formed and trapped outside the bubble by the wake produced by on-axis injected electrons. These unusual femtosecond duration, high-charge, high-energy, ring electron beams may find use in beam driven plasma wakefield accelerators and radiation sources.
| Type: | Article |
|---|---|
| Title: | Parametric study of high-energy ring-shaped electron beams from a laser wakefield accelerator |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1367-2630/ac3efd |
| Publisher version: | https://doi.org/10.1088/1367-2630/ac3efd |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third-party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, laser-plasma wakefield accelerators, parametric study, annular electron beams |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10146511 |
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