Presentation
14 May 2019 Eight GeV electrons from a laser-heated capillary discharge plasma (Conference Presentation)
Anthony Gonsalves, Kei Nakamura, Joost Daniels, Carlo Benedetti, Christopher Pieronek, Tim de Raadt, Sven Steinke, Carl Schroeder, Stepan Bulanov, Eric Esarey, Kelly Swanson, Liona Fan-Chiang, Gennadiy Bagdasarov, Nadezhda Bobrova, Vladimir Gasilov, Pavel Sasorov, Wim P. Leemans
Author Affiliations +
Abstract
In 2014, electron beams with energy up to 4.3 GeV were obtained using 9 cm-long capillary discharge plasma waveguides and laser pulses with peak power 310 TW [1]. Although the laser power available was 1 PW, at that time it was not possible to increase the electron beam energy further since effective laser-guiding of the 60 micron focal spot at lower density was not possible. Usually the capillary radius would be reduced to increase the plasma channel depth and achieve matched guiding of the laser, but for PW laser pulses significant capillary damage would typically occur. The concept of inverse bremsstrahlung heating inside a capillary waveguide was proposed to address this problem [2]. Results will be shown on the optimization of heating and laser-guiding, which has allowed for guiding of laser pulses with PW peak power and 60 micron radius over tens of centimeters, and the generation of electron beams with energy up to 8GeV. The work was supported by the Office of Science, US DOE under Contract DE-AC02-05CH11231 and the NSF. [1] W. P. Leemans et al., Phys. Rev. Lett. 113, 245002 (2014). [2] N.A. Bobrova et al., Phys. Plasmas 20, 020703 (2013).
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Anthony Gonsalves, Kei Nakamura, Joost Daniels, Carlo Benedetti, Christopher Pieronek, Tim de Raadt, Sven Steinke, Carl Schroeder, Stepan Bulanov, Eric Esarey, Kelly Swanson, Liona Fan-Chiang, Gennadiy Bagdasarov, Nadezhda Bobrova, Vladimir Gasilov, Pavel Sasorov, and Wim P. Leemans "Eight GeV electrons from a laser-heated capillary discharge plasma (Conference Presentation)", Proc. SPIE 11037, Laser Acceleration of Electrons, Protons, and Ions V, 110370R (14 May 2019); https://doi.org/10.1117/12.2521074
Advertisement
Advertisement
KEYWORDS
Capillaries

Plasma

Electrons

Electron beams

Waveguides

Back to Top