Dresden 2020 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 10: New Accelerator Concepts and Miscellaneous (superconducting materials)
AKBP 10.1: Talk
Tuesday, March 17, 2020, 16:30–16:45, HSZ 301
TWEAC – Scalable laser-plasma acceleration — •Alexander Debus1, Richard Pausch1,2, Axel Hübl1,2,3, Klaus Steiniger1,2, René Widera1, Thomas Cowan1, Ulrich Schramm1, and Michael Bussmann1,4 — 1HZDR, Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstr. 400, Dresden, Germany — 2Technische Universität Dresden, 01062 Dresden — 3Lawrence Berkeley National Laboratory, Berkeley, California, US — 4CASUS, Center for Advanced Systems Understanding, Görlitz, Germany
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. We present Traveling-Wave Electron Acceleration [1], a novel compact laser-plasma accelerator scheme which circumvents the LWFA constraints of electron beam dephasing, laser pulse diffraction and depletion.
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.
[1] Debus et al., Phys. Rev. X 9, 031044 (2019)