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K: Fachverband Kurzzeit- und angewandte Laserphysik

K 2: Poster

K 2.8: Poster

Tuesday, March 15, 2022, 16:30–18:30, P

Precise diagnostic of high-power ultra-short laser — •Xinhe Huang^1,2,4, Alexander Sävert¹, Beate Heinemann^2,4, and Matt Zepf^1,3 — ¹Helmholtz Institute Jena, Jena, Germany — ²DESY, Hamburg, Germany — ³Friedrich Schiller Universität Jena, Jena, Germany — ⁴Albert-Ludwigs-Universität Freiburg, Freiburg, Germany

The LUXE (Laser Und XFEL Experiment) project aims to measure processes in the strong-field quantum electrodynamics regime with high precision by colliding electrons or a high-energy photon beam with high-power, tightly focused laser beam at a repetition rate of 1Hz. Simulations [1] predict that the probability of pair production responds highly non-linearly to the laser strength parameter. Consequently, small variations in the laser intensity lead to significant variations in the experimental observables. The required precision will be achieved by intensity tagging though precise measurements on the relative variation of intensity on a shot-by-shot basis. We present results of a laser diagnostic system performed on the JETI200 laser, with an ultimate aim to monitor the shot-to-shot fluctuations with precision below 1%.

[1] LUXE CDR, arXiv:2102.02032 [hep-ex]