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

2015; American Physical Society; Volume: 115; Issue: 18 Linguagem: Inglês

10.1103/physrevlett.115.184802

1092-0145

J. van Tilborg, S. Steinke, C. G. R. Geddes, N. H. Matlis, B. H. Shaw, A. J. Gonsalves, Julius Huijts, K. Nakamura, J. Daniëls, C. B. Schroeder, C. Benedetti, E. Esarey, S. S. Bulanov, N. A. Bobrova, P. V. Sasorov, Wim Leemans,

Pulsed Power Technology Applications

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.