Ultrarelativistic electron beams accelerated by terawatt scalable kHz laser

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.

6 pages, 3 figures, 1 table

References in corpus (1)

• Dosimetric characterisation and application to radiation biology of a kHz laser-driven electron beam

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