Bonn 2025 – scientific programme

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MO: Fachverband Molekülphysik

MO 24: Attosecond Physics II (joint session A/MO)

MO 24.2: Talk

Thursday, March 13, 2025, 11:30–11:45, GrHS Mathe

Attosecond Photon Diagnostics at Flash - A Dedicated Angular Streaking Beamline — •Lasse Wülfing¹, Lars Funke¹, Thorsten Otto², Sara Savio¹, Niclas Wieland³, Markus Ilchen³, and Wolfram Helml¹ — ¹Technische Universität Dortmund, Germany — ²Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany — ³Universität Hamburg, Germany

The established scheme of angular streaking can characterize the temporal and spectral information of ultrashort X-ray pulses non-invasively. This is done by overlapping the pulses with a circularly polarized IR laser in a gaseous target and measuring the resulting angle dependent photo electron spectra with so called Cookiebox-type detectors.

We developed a new detector with optimized electron time of flight spectrometers for increased energy resolution and better overall performance. This experiment will be installed at a new diagnostics beamline at Flash 2 for a dedicated angular streaking setup.

We present an overall rundown of the experimental method and the new setup.

Keywords: Detector Development; Angular Streaking; Photon Diagnostics; Pulse Reconstruction; Free Electron Laser