Controlled acceleration of GeV electron beams in an all-optical plasma waveguide
Kosta Oubrerie, Adrien Leblanc, Olena Kononenko, Ronan Lahaye, I. A. Andriyash, J. Gautier, Jean-Philippe Goddet, Lorenzo Martelli, Amar Tafzi, K. Ta Phuoc, Slava Smartsev, C. Thaury
Abstract
, more than 1000 times larger than those produced by radio-frequency accelerators. These uniquely strong fields make LPAs a promising path to generate electron beams beyond the TeV, an important goal in high-energy physics. Yet, large electric fields are of little benefit if they are not maintained over a long distance. It is therefore of the utmost importance to guide the ultra-intense laser pulse that drives the accelerator. Reaching very high energies is equally useless if the properties of the electron beam change completely from shot to shot, due to the intrinsic lack of stability of the injection process. State-of-the-art laser-plasma accelerators can already address guiding and control challenges separately by tweaking the plasma structures. However, the production of beams that are simultaneously high quality and high energy has yet to be demonstrated. This paper presents a novel experiment, coupling laser-plasma waveguides and controlled injection techniques, facilitating the reliable and efficient acceleration of high-quality electron beams up to 1.1 GeV, from a 50 TW-class laser.