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Würzburg 2018 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: New Accelerator Concepts

AKBP 2.4: Talk

Monday, March 19, 2018, 16:45–17:00, NW-Bau - HS2

Probing of laser-plasma experiments at DRACO with a stand-alone probe laser system — •Constantin Andreas Bernert1,2, Florian-Emanuel Brack1,2, Stefan Kraft1, Florian Kroll1,2, Markus Löser1, Josefine Metzkes-Ng1, Lieselotte Obst1,2, Martin Rehwald1,2, Hans-Peter Schlenvoigt1, Mathias Siebold1, Karl Zeil1, Tim Ziegler1,2, and Ulrich Schramm1,21Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany — 2Technische Universität Dresden, 01062 Dresden, Germany

The exploration of the plasma dynamics and its microscopic parameters is crucial for the optimization of laser-driven ion acceleration. Optical probing is one technique to investigate the temporal plasma evolution. However, strong plasma self-emission at the driver lasers wavelength and its harmonics often masks the laser plasma interaction region and thus complicates the data analysis. Here, we present the implementation of a stand-alone probe laser system, which is temporally synchronized to the Dresden laser acceleration source (DRACO). The probe laser system consisting of a seed laser and one regenerative amplifier is based on Yb:YAG and thus provides a fundamental wavelength of 1030 nm, which is different from the wavelength of the DRACO driver laser (800 nm) and its harmonics. We present the advantages of this probing approach, which was tested during an experimental campaign with wire targets of different materials and diameters in the micrometer range, and give an inside on the current challenges and developments of the probing system.

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