Göttingen 2025 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 9: Novel Accelerator Concepts III and Hadron Accelerators

AKBP 9.6: Talk

Thursday, April 3, 2025, 15:15–15:30, ZHG004

Full Power Laser Diagnostic — •Luis Gwinner, Michael Bachhammer, Leonard Doyle, and Jörg Schreiber — Faculty of Physics, Ludwig-Maximilians-Universität München, Garching, Germany

In the field of particle acceleration, laser-driven ion acceleration has garnered significant research interest. Recent studies have identified several key parameters in the laser-target interaction that can be optimized to maximize particle acceleration efficiency. However, interpreting results when tuning these parameters is often challenging due to the high shot-to-shot variability inherent in laser systems, such as the PW-class Advanced Titanium Sapphire Laser (ATLAS) at the Centre for Advanced Laser Applications (CALA). If these variations stem from statistical fluctuations, one potential solution is to perform a large number of shots to average out the laser-induced variations. This approach necessitates a high-repetition-rate laser and target system, which is a major focus of current research. Another strategy is to directly monitor the key laser parameters just before the laser interacts with the target, without compromising the full laser power delivered to the target. This poses a significant challenge, as monitoring a laser capable of turning matter into plasma requires sophisticated optical systems. Such minimally invasive systems must split the laser beam, directing a small, predictable portion to diagnostic tools while ensuring that the remaining high-energy beam remains unperturbed and reaches the target. The presentation will include preliminary designs, concepts, and first results for this innovative diagnostic setup.

Keywords: Laser-driven ion acceleration; Minimally invasive diagnostics; Laser-target interaction; Shot-to-shot variability