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Dresden 2017 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 1: New Accelerator Concepts I

AKBP 1.7: Talk

Monday, March 20, 2017, 16:45–17:00, MOL 213

Plasma targets for the Laser-plasma driven Undulator X-ray source LUX — •Philipp Messner1,2, Niels Delbos1, and Andreas R. Maier11Center for Free-Electron Laser Science & Department of Physics, University of Hamburg, 22761 Hamburg, Germany — 2International Max Planck Research School for Ultrafast Imaging & Structural Dynamics, 22761 Hamburg, Germany

Laser-plasma accelerator are promising candidates to provide ultra-relativistic electron beams for compact light sources. However, the generation of stable, high quality electron beams which are necessary to drive such a compact light source is challenging. The main determining factors are thereby the plasma properties which are given by the structure of the cm-scaled plasma target itself.

Here, we present the design process of the LUX plasma targets. Based on computational fluid dynamic simulations, targets were produced allowing to control the plasma properties and to set stable, repeatable conditions. Raman spectroscopy measurements of the gas density in the target confirm these simulations. Furthermore, results from target machining in sapphire crystals using a femtosecond laser system with KHZ repetition rate are presented and compared to the machining with state of the art milling machines.

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