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Proceedings Paper

Controlled generation of ultra-short electron bunches using density modulation
Author(s): Samuel R. Yoffe; Bernhard Ersfeld; Matthew P. Tooley; Adam Noble; Ross Fraser; Dino A. Jaroszynski
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Paper Abstract

Stimulated electron self-injection in the laser wakefield accelerator (LWFA) using density downramps is well known and regularly used to produce high energy electron bunches. The use of density gradients not only to stimulate injection but also control the properties of the injected electron bunch was recently presented by Tooley et al. [Phys. Rev. Lett. 119, 044801 (2017)], in which the authors put forward a model for controlling the velocity of the back of the bubble and compared to 2D and 3D particle-in-cell (PIC) data. This model is discussed and used to identify suitable LWFA parameters for ultra-short injection and repeated injection of multiple bunches. Quasi-3D PIC data is used to demonstrate injection of multiple bunches well separated in energy.

Paper Details

Date Published: 24 April 2019
PDF: 6 pages
Proc. SPIE 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 110360O (24 April 2019); doi: 10.1117/12.2522502
Show Author Affiliations
Samuel R. Yoffe, Univ. of Strathclyde (United Kingdom)
Bernhard Ersfeld, Univ. of Strathclyde (United Kingdom)
Matthew P. Tooley, Univ. of Strathclyde (United Kingdom)
Univ. of Sheffield (United Kingdom)
Adam Noble, Univ. of Strathclyde (United Kingdom)
Ross Fraser, Univ. of Strathclyde (United Kingdom)
Dino A. Jaroszynski, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 11036:
Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III
Dino A. Jaroszynski; MinSup Hur, Editor(s)

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