22–26 Aug 2022
Trieste Convention Centre
Europe/Zurich timezone

The SASE3 Soft X-Ray Beamline at European XFEL: Monochromatic Operation

WEP41
24 Aug 2022, 16:00
1h 30m
Exhibition Hall (Trieste Convention Centre)

Exhibition Hall

Trieste Convention Centre

Contributed Poster Photon beamline instrumentation & undulators Wednesday posters

Speaker

Natalia Gerasimova (European XFEL GmbH)

Description

The SASE3 soft X-ray beamline at the European XFEL is equipped with the grating monochromator allowing to reduce SASE FEL bandwidth and to improve longitudinal coherence at the experiments in the photon energy range 250 eV - 3000 eV. The design of the monochromator is challenged by a demand to control both photon energy resolution and temporal resolution; the aim to transport close to transform-limited pulses poses very high demands on the optics quality, in particular on the grating. Presently, the monochromator operates with two gratings: the low-resolution grating is optimized for time-resolved experiments and allows for moderate resolving power of about 2000 - 5000 along with pulse stretching of few to few tens of femtoseconds RMS, and the high-resolution grating reaches resolving power of 10000 at a cost of larger pulse stretching. The examples of time-resolved experiments and experiments performed in high photon energy resolution mode are presented. In addition, being operational in spectrometer mode, the monochromator is regularly used for the spectral characterization of the FEL beam including photon pulse length retrieval.

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Primary author

Natalia Gerasimova (European XFEL GmbH)

Co-authors

Alexander Yaroslavtsev (European XFEL GmbH) Andreas Scherz (European XFEL GmbH) Justine Schlappa (European XFEL GmbH) Harald Sinn (European XFEL GmbH) Martin Teichmann (European XFEL GmbH) Giuseppe Mercurio (European XFEL GmbH) Daniele La Civita (European XFEL GmbH) Maurizio Vannoni (European XFEL GmbH) Robert Carley (European XFEL GmbH) Liubov Samoylova (European XFEL GmbH) Loïc Le Guyader (European XFEL GmbH) Laurent Mercadier (European XFEL GmbH) David Hickin (European XFEL GmbH) Benjamin van Kuiken (European XFEL GmbH) Raul Villanueva (European XFEL GmbH) Rafael Gort (European XFEL GmbH) Piter Miedema (European XFEL GmbH) Svitozar Serkez (European XFEL GmbH)

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