Abstract
In this paper, we propose an approach to enhance the electron energy gain in standard laser-driven plasma wakefield accelerators, using accelerating Bessel pulses with tunable group velocity so to avoid electron dephasing. We use in the numerical simulations a one-dimensional theoretical model in the linear regime, taking advantage of the “diffraction-free” properties of the localized Bessel beam and thus neglecting transverse effects during the acceleration process. With a multistage tailoring approach, we show a gain enhancement of more than 100 with electron energies that may reach the GeV range over distances shorter than 1 m.
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The authors thank Arnaud Couairon for useful discussions in the initial stage of this work.
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Kumar, S., Parola, A., Di Trapani, P. et al. Laser plasma wakefield acceleration gain enhancement by means of accelerating Bessel pulses. Appl. Phys. B 123, 185 (2017). https://doi.org/10.1007/s00340-017-6761-4
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DOI: https://doi.org/10.1007/s00340-017-6761-4