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Open Access Publications from the University of California

Active Plasma Lensing for Relativistic Laser-Plasma-Accelerated Electron Beams.

  • Author(s): van Tilborg, J
  • Steinke, S
  • Geddes, CGR
  • Matlis, NH
  • Shaw, BH
  • Gonsalves, AJ
  • Huijts, JV
  • Nakamura, K
  • Daniels, J
  • Schroeder, CB
  • Benedetti, C
  • Esarey, E
  • Bulanov, SS
  • Bobrova, NA
  • Sasorov, PV
  • Leemans, WP
  • et al.

Compact, tunable, radially symmetric focusing of electrons is critical to laser-plasma accelerator (LPA) applications. Experiments are presented demonstrating the use of a discharge-capillary active plasma lens to focus 100-MeV-level LPA beams. The lens can provide tunable field gradients in excess of 3000 T/m, enabling cm-scale focal lengths for GeV-level beam energies and allowing LPA-based electron beams and light sources to maintain their compact footprint. For a range of lens strengths, excellent agreement with simulation was obtained.

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