München 2019 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 8: New Accelerator Concepts
AKBP 8.1: Vortrag
Dienstag, 19. März 2019, 16:30–16:45, HS 8
TWEAC - Laser-plasma acceleration beyond the dephasing and depletion limits — •Alexander Debus1, Richard Pausch1,2, Axel Huebl1,2, Klaus Steiniger1, Rene Widera1, Tom Cowan1,2, Ulrich Schramm1,2, and Michael Bussmann1 — 1Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstr. 400, Dresden, Germany — 2Technische Universität Dresden, 01062 Dresden
We present Traveling-Wave Electron Acceleration (TWEAC), a novel compact electron accelerator scheme based on laser-plasma acceleration. While laser-plasma accelerators provide multi-GeV electron beams today, the acceleration to higher energies is limited. The sub-luminal group-velocity of plasma waves let electrons outrun the accelerating field.
In order to control the speed of the accelerating plasma cavity, TWEAC utilizes two pulse-front tilted laser pulses whose propagation directions enclose an acute angle. The accelerating cavity is created along their overlap region in the plasma and can move at the vacuum speed of light. Thus, TWEAC provides constant acceleration which opens the way for electron energies beyond 10 GeV, possibly towards TeV class electron beams, without the need for multiple laser-accelerator stages.