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Demonstration of relativistic electron beam focusing by a laser-plasma lens

Abstract : Laser-plasma technology promises a drastic reduction of the size of high-energy electron accelerators. It could make free-electron lasers available to a broad scientific community and push further the limits of electron accelerators for high-energy physics. Furthermore, the unique femtosecond nature of the source makes it a promising tool for the study of ultrafast phenomena. However, applications are hindered by the lack of suitable lens to transport this kind of high-current electron beams mainly due to their divergence. Here we show that this issue can be solved by using a laser-plasma lens in which the field gradients are five order of magnitude larger than in conventional optics. We demonstrate a reduction of the divergence by nearly a factor of three, which should allow for an efficient coupling of the beam with a conventional beam transport line.
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https://hal.archives-ouvertes.fr/hal-01164362
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Submitted on : Friday, July 17, 2015 - 2:14:11 PM
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Cédric Thaury, Emilien Guillaume, Andreas Döpp, Rémi Lehe, Agustin Lifschitz, et al.. Demonstration of relativistic electron beam focusing by a laser-plasma lens. Nature Communications, Nature Publishing Group, 2015, 6, pp.6860. ⟨10.1038/ncomms7860⟩. ⟨hal-01164362⟩

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