Generation of ultrafast electron bunch trains via trapping into multiple periods of plasma wakefields

0541109 - ÚFP 2021 RIV US eng J - Journal Article
Golovin, G. - Horný, Vojtěch - Yan, Wenchao - Fruhling, C. - Haden, D. - Wang, J. - Banerjee, S. - Umstadter, D.
Generation of ultrafast electron bunch trains via trapping into multiple periods of plasma wakefields.
Physics of Plasmas. Roč. 27, č. 3 (2020), č. článku 033105. ISSN 1070-664X. E-ISSN 1089-7674
R&D Projects: GA MŠMT EF15_003/0000449
Institutional support: RVO:61389021 ; RVO:68378271
Keywords : plasma wakefields * ultrafast electron bunch trains
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.023, year: 2020
Method of publishing: Limited access
https://aip.scitation.org/doi/abs/10.1063/1.5141953

We demonstrate a novel approach to the generation of femtosecond electron bunch trains via laser-driven wakefield acceleration. We use two independent high-intensity laser pulses, a drive, and an injector, each creating their own plasma wakes. The interaction of the laser pulses and their wakes results in a periodic injection of free electrons in the drive plasma wake via several mechanisms, including ponderomotive drift, wake-wake interference, and pre-acceleration of electrons directly by strong laser fields. Electron trains were generated with up to four quasi-monoenergetic bunches, each separated in time by a plasma period. The time profile of the generated trains is deduced from an analysis of beam loading and confirmed using 2D particle-in-cell simulations.
Permanent Link: http://hdl.handle.net/11104/0318694