24-30 September 2017
La Biodola, Isola d'Elba
Europe/Rome timezone

Traveling-Wave Electron Acceleration - Beyond the dephasing and depletion limits of laser-wakefield acceleration

26 Sep 2017, 16:54
18m
SML, Sala Maria Luisa, HH

SML, Sala Maria Luisa, HH

talk WG1 - Electron Beams from Plasmas WG1_Parallel

Speaker

Dr Alexander Debus (Helmholtz-Zentrum Dresden-Rossendorf)

Description

We show how to simultaneously solve several long standing limitations of laser-wakefield acceleration that have thus far prevented laser-plasma electron accelerators (LWFA) to extend into the energy realm beyond 10 GeV. Most prominently, our novel Traveling-Wave Electron Acceleration (TWEAC) approach eliminates both the dephasing and depletion constraints. The wakefield driver is a region of overlap of two obliquely incident, ultrashort laser pulses with tilted pulse-fronts in the line foci of two cylindrical mirrors, aligned to coincide with the trajectory of subsequently accelerated electrons. TWEAC leads to quasi-static acceleration conditions, which do not suffer from laser self-phase modulation, parasitic self-injection or other plasma instabilities. Particularly, and in contrast to LWFA and PWFA, a single TWEAC-stage can arbitrarily be extended in length to higher electron energies without changing the underlying acceleration mechanism. Additionally, the TWEAC geometry greatly facilitates reducing beam transport distances between the laser-plasma accelerator and subsequent insertion devices, such as undulators, plasma lenses or colliding laser pulses, to below millimeters. We introduce the new acceleration scheme, show results from 3D particle-in-cell simulations using PIConGPU, discuss energy scalability for both laser and electrons and elaborate on experimental realization requirements.

Primary author

Dr Alexander Debus (Helmholtz-Zentrum Dresden-Rossendorf)

Co-authors

Mr Axel Huebl (Helmholtz-Zentrum Dresden-Rossendorf) Mr Klaus Steiniger (Helmholtz-Zentrum Dresden-Rossendorf) Dr Michael Bussmann (Helmholtz-Zentrum Dresden-Rossendorf) Mr René Widera (Helmholtz-Zentrum Dresden-Rossendorf) Mr Richard Pausch (Helmholtz-Zentrum Dresden - Rossendorf) Prof. Thomas COWAN (Helmholtz-Zentrum Dresden-Rossendorf) Prof. Ulrich Schramm (Helmholtz-Zentrum Dresden-Rossendorf)

Presentation Materials

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