Sep 15 – 21, 2019
Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy
Europe/Rome timezone

Beam quality optimization in a beam loaded nanocoulomb-class laser wakefield accelerator

Sep 16, 2019, 7:00 PM
Parking Area (Hotel Hermitage)

Parking Area

Hotel Hermitage

poster WG1 - Electron beams from plasmas Cheese and Wine Poster Session 1


Alexander Koehler (Helmholtz-Zentrum Dresden - Rossendorf)


Here we report on beam quality optimization in a stable and robust nanocoulomb-class laser wakefield accelerator. The self-truncated ionization injection scheme enables precise control over the amount of injected charges up to 0.5 nC (FWHM) at a quasi-monoenergetic peak. Stable operation of the accelerator is achieved, enabling us to study key parameters in statistical data-sets. Employing the optimal beam loading condition, the accelerating gradient is flattened and we eliminate additional energy spread contribution from the acceleration process$^{1,2}$. Simultaneously minimizing beam divergence by limiting betatron coupling, high quality beams with peak currents of over ten kA are reached. Together with the accelerator’s tunability and stable operation this paves the road for driving superradiant lights sources and enables the first proof-of-principle experiments exploiting the unique beam properties found in these compact accelerators.

  1. J.P. Couperus,, “Demonstration of a beam loaded nanocoulomb-class laser wakefield accelerator”, Nature Communication, 8, 487 (2017)
  2. A. Irman et al., “Improved performance of laser wakefield acceleration by tailored self-truncation ionization injection”, Plasma Physics and Controlled Fusion, 60, 044015 (2018)

Primary authors

Dr Jurjen Couperus Cabadağ (Helmholtz-Zentrum Dresden - Rossendorf) Alexander Koehler (Helmholtz-Zentrum Dresden - Rossendorf) Omid Zarini (Helmholtz-Zentrum Dresden - Rossendorf e.V.) Yen-Yu Chang (Helmholtz-Zentrum Dresden - Rossendorf) Thomas Kurz (HZDR) Susanne Schoebel (Helmholtz-Zentrum Dresden-Rossendorf) Richard Pausch (Helmholtz-Zentrum Dresden - Rossendorf) Alexander Debus (Helmholtz-Zentrum Dresden-Rossendorf) Michael Bussmann (Forschungszentrum Dresden-Rossendorf e.V.) Ulrich Schramm (Helmholtz-Zentrum Dresden-Rossendorf) Arie Irman (Helmholtz Zentrum Dresden Rossendorf)

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