Active Plasma Lensing for Relativistic Laser-Plasma-Accelerated Electron Beams.
Phys Rev Lett
; 115(18): 184802, 2015 Oct 30.
Article
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| MEDLINE
| ID: mdl-26565471
ABSTRACT
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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