Matter and Radiation at Extremes (Jan 2024)

The acceleration of a high-charge electron bunch to 10 GeV in a 10-cm nanoparticle-assisted wakefield accelerator

  • Constantin Aniculaesei,
  • Thanh Ha,
  • Samuel Yoffe,
  • Lance Labun,
  • Stephen Milton,
  • Edward McCary,
  • Michael M. Spinks,
  • Hernan J. Quevedo,
  • Ou Z. Labun,
  • Ritwik Sain,
  • Andrea Hannasch,
  • Rafal Zgadzaj,
  • Isabella Pagano,
  • Jose A. Franco-Altamirano,
  • Martin L. Ringuette,
  • Erhart Gaul,
  • Scott V. Luedtke,
  • Ganesh Tiwari,
  • Bernhard Ersfeld,
  • Enrico Brunetti,
  • Hartmut Ruhl,
  • Todd Ditmire,
  • Sandra Bruce,
  • Michael E. Donovan,
  • Michael C. Downer,
  • Dino A. Jaroszynski,
  • Bjorn Manuel Hegelich

DOI
https://doi.org/10.1063/5.0161687
Journal volume & issue
Vol. 9, no. 1
pp. 014001 – 014001-10

Abstract

Read online

An intense laser pulse focused onto a plasma can excite nonlinear plasma waves. Under appropriate conditions, electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic velocities. This scheme is called a laser wakefield accelerator. In this work, we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the wakefields. We find that a 10-cm-long, nanoparticle-assisted laser wakefield accelerator can generate 340 pC, 10 ± 1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms divergence. It can also produce bunches with lower energies in the 4–6 GeV range.