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arXiv · 2302.11415

Ultrarelativistic electron beams accelerated by terawatt scalable kHz laser

C. M. Lazzarini·G. M. Grittani·P. Valenta·I. Zymak·R. Antipenkov·U. Chaulagain·L. V. N. Goncalves·A. Grenfell·M. Lamac·S. Lorenz·M. Nevrkla·V. Sobr·A. Spacek·W. Szuba·P. Bakule·G. Korn·S. V. Bulanov
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Abstract

We show the laser-driven acceleration of unprecedented, collimated ($ 2 \ \mathrm{mrad} $ divergence), and quasi-monoenergetic ($ 25 \ \% $ energy spread) electron beams with energy up to $ 50 \ \mathrm{MeV} $ at $ 1 \ \mathrm{kHz} $ repetition rate. The laser driver is a multi-cycle ($ 15 \ \mathrm{fs} $) $ 1 \ \mathrm{kHz} $ optical parametric chirped pulse amplification (OPCPA) system, operating at $ 26 \ \mathrm{mJ} $ ($ 1.7 \ \mathrm{TW} $). The scalability of the driver laser technology and the electron beams reported in this work pave the way towards developing high-brilliance x-ray sources for medical imaging, innovative devices for brain cancer treatment, and represent a step towards the realization of a kHz GeV electron beamline.

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C. M. Lazzarini, G. M. Grittani, P. Valenta, I. Zymak, R. Antipenkov, U. Chaulagain, L. V. N. Goncalves, A. Grenfell, M. Lamac, S. Lorenz, M. Nevrkla, V. Sobr, A. Spacek, W. Szuba, P. Bakule, G. Korn, S. V. Bulanov. 2023-02-22. Ultrarelativistic electron beams accelerated by terawatt scalable kHz laser. https://doi.org/10.1063/5.0189051

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