Controlled generation of ultra-short electron bunches using density modulation

Samuel R. Yoffe; Bernhard Ersfeld; Matthew P. Tooley; Adam Noble; Ross Fraser; Dino A. Jaroszynski

doi:10.1117/12.2522502

24 April 2019 Controlled generation of ultra-short electron bunches using density modulation

Samuel R. Yoffe, Bernhard Ersfeld, Matthew P. Tooley, Adam Noble, Ross Fraser, Dino A. Jaroszynski

Author Affiliations +

Proceedings Volume 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III; 110360O (2019) https://doi.org/10.1117/12.2522502
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

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.

Conference Presentation

Citation Download Citation

Samuel R. Yoffe, Bernhard Ersfeld, Matthew P. Tooley, Adam Noble, Ross Fraser, and Dino A. Jaroszynski "Controlled generation of ultra-short electron bunches using density modulation", Proc. SPIE 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 110360O (24 April 2019); https://doi.org/10.1117/12.2522502

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