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Eight GeV electrons from a laser-heated capillary discharge plasma (Conference Presentation)
Author(s): 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
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Paper 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).

Paper Details

Date Published: 14 May 2019
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Proc. SPIE 11037, Laser Acceleration of Electrons, Protons, and Ions V, 110370R (14 May 2019); doi: 10.1117/12.2521074
Show Author Affiliations
Anthony Gonsalves, Lawrence Berkeley National Lab. (United States)
Kei Nakamura, Lawrence Berkeley National Lab. (United States)
Joost Daniels, Lawrence Berkeley National Lab. (United States)
Carlo Benedetti, Lawrence Berkeley National Lab. (United States)
Christopher Pieronek, Lawrence Berkeley National Lab. (United States)
Tim de Raadt, Technische Univ. Eindhoven (United States)
Sven Steinke, Lawrence Berkeley National Lab. (United States)
Carl Schroeder, Lawrence Berkeley National Lab. (United States)
Stepan Bulanov, Lawrence Berkeley National Lab. (United States)
Eric Esarey, Lawrence Berkeley National Lab. (United States)
Kelly Swanson, Lawrence Berkeley National Lab. (United States)
Liona Fan-Chiang, Lawrence Berkeley National Lab. (United States)
Gennadiy Bagdasarov, M. V. Keldysh Institute of Applied Mathematics (Russian Federation)
Nadezhda Bobrova, M. V. Keldysh Institute of Applied Mathematics (Russian Federation)
Vladimir Gasilov, M. V. Keldysh Institute of Applied Mathematics (Russian Federation)
Pavel Sasorov, Institute of Physics of the CAS, v.v.i. (Czech Republic)
Wim P. Leemans, Lawrence Berkeley National Lab. (United States)
Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 11037:
Laser Acceleration of Electrons, Protons, and Ions V
Eric Esarey; Carl B. Schroeder; Jörg Schreiber, Editor(s)

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