Open AccessParametric study of high-energy ring-shaped electron beams from a laser wakefield accelerator
Author(s) -
Antoine Maitrallain,
E. Brunetti,
Matthew Streeter,
Brendan Kettle,
Roman Spesyvtsev,
G. Vieux,
Mohammed Shazhad,
Bernhard Ersfeld,
S. R. Yoffe,
Andrzej Kornaszewski,
Oliver Finlay,
Y. Ma,
F. Albert,
Nicolas Bourgeois,
S. J. D. Dann,
N. Lemos,
Silvia Cipiccia,
J. M. Cole,
I. Gallardo González,
Andrew Higginbotham,
Amina Hussein,
Michal Šmíd,
K. Falk,
K. Krushelnick,
N. Lopes,
E. Gerstmayr,
C. Lumsdon,
Olle Lundh,
Stuart Mangles,
Z. Najmudin,
P. P. Rajeev,
D. R. Symes,
Alexander Thomas,
D. A. Jaroszynski
Publication year - 2022
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/ac3efd
Subject(s) - physics , electron , atomic physics , beam (structure) , cathode ray , femtosecond , laser , particle accelerator , plasma , nuclear physics , optics
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.