Dresden 2020 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 6: New Accelerator Concepts
AKBP 6.2: Talk
Tuesday, March 17, 2020, 10:00–10:15, HSZ 301
Online Diagnostics and Stabilization of the ANGUS 200 TW Laser — •Cora Braun1, Timo Eichner1, Thomas Hülsenbusch1,2, Matthias Schnepp1, and Andreas R. Maier1 — 1Center for Free-Electron Laser Science, Hamburg, Germany — 2DESY, Hamburg, Germany
Laser-Plasma-Accelerators are prominent candidates to drive a next generation of high-brightness x-ray sources. The LUX laser-plasma-accelerator, driven by the ANGUS 200 TW laser, has recently demonstrated the generation of few-nm-plasma-driven undulator radiation. Long-term operation of the plasma accelerator with reproducible and stable electron beams requires a highly stable drive laser. To reach this goal, we have integrated the ANGUS laser in an accelerator-grade control system. Enabled by the analysis tools at every stage of the laser system, we observe that changes in the front-end of the amplifier chain have a direct impact on both, laser parameters in all amplification stages and the properties of the accelerated electrons. We will report on the long-term-drifts we have observed during laser operation and their effects on the laser system, and present recent upgrades to the laser system to stabilize against these drifts.