An automated, 0.5 Hz nano-foil target positioning system for intense laser plasma experiments
- Gao, Ying;
- Bin, Jianhui;
- Haffa, Daniel;
- Kreuzer, Christian;
- Hartmann, Jens;
- Speicher, Martin;
- Lindner, Florian H;
- Ostermayr, Tobias M;
- Hilz, Peter;
- Rösch, Thomas F;
- Lehrack, Sebastian;
- Englbrecht, Franz;
- Seuferling, Sebastian;
- Gilljohann, Max;
- Ding, Hao;
- Ma, Wenjun;
- Parodi, Katia;
- Schreiber, Jörg
- et al.
Published Web Location
https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering/article/an-automated-05-hz-nanofoil-target-positioning-system-for-intense-laser-plasma-experiments/8A6D8618C7A1FA34C59ABA61EA27347AAbstract
We report on a target system supporting automated positioning of nano-targets with a precision resolution of in three dimensions. It relies on a confocal distance sensor and a microscope. The system has been commissioned to position nanometer targets with 1Â Hz repetition rate. Integrating our prototype into the table-top ATLAS 300 TW-laser system at the Laboratory for Extreme Photonics in Garching, we demonstrate the operation of a 0.5Â Hz laser-driven proton source with a shot-to-shot variation of the maximum energy about 27% for a level of confidence of 0.95. The reason of laser shooting experiments operated at 0.5Â Hz rather than 1Â Hz is because the synchronization between the nano-foil target positioning system and the laser trigger needs to improve.