Multi-GeV laser wakefield acceleration of quasi-monoenergetic bunches due to localized ionization injection

ORAL

Abstract

We present a 3-stage model [1] of guided mode evolution and electron injection in self-waveguided [2] laser wakefield accelerators (LWFAs). The model, based on extensive 3D WarpX particle-in-cell simulations [3,4], is well-matched to experiments performed under a wide variety of laser and plasma conditions, including the generation of electron beams with energy-stratified electron bunches up to 5 GeV [5]. We demonstrate the production of < 2 GeV >7% ΔE/E (resolution limited) quasi-monoenergetic electron bunches by use of an injector gas localized within the waveguide to the same spatial scale as the pulse evolution predicted in the model. We also provide evidence that guided mode evolution can be controlled in order to induce electron injection.

[1] J.E. Shrock et al. (in preparation).

[2] L. Feder et al., Phys. Rev. Res. 2, 43173 (2020).

[3] https://github.com/ECP-WarpX/WarpX.

[4] E. Rockafellow et al. "Particle-in-cell simulations modeling guided mode evolution and ionization injection in multi-GeV laser wakefield acceleration". APS DPP 2023

[5] B. Miao et al.. Rev. X 12, 31038 (2022).

*This work was supported by the U.S. Department of Energy (DE-SC0015516, LaserNetUS DE-SC0019076/FWP#SCW1668, and DE-SC0011375), and the National Science Foundation (PHY1619582 and PHY2010511). This research used the open-source particle-in-cell code WarpX [4]. High performance computing support to the University of Maryland was provided through the Office of Naval Research (N00014-20-1-2233).

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Publication: J.E. Shrock et. al, "Pulse evolution and localized ionization injection in self-waveguided laser wakefield accelerators", (in preparation)

Presenters

  • Jaron E Shrock

    • University of Maryland, College Park
    • University of Maryland

Authors

  • Jaron E Shrock

    • University of Maryland, College Park
    • University of Maryland

  • Bo Miao

    • University of Maryland, College Park

  • Ela M Rockafellow

    • University of Maryland, College Park

  • Alex Picksley

    • Lawrence Berkeley National Laboratory

  • Reed C Hollinger

    • Colorado State University

  • Shoujun Wang

    • Colorado State University

  • Jorge J Rocca

    • Colorado State University
    • XUV lasers and Colorado State University

  • Howard M Milchberg

    • University of Maryland, College Park