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



Aug 23, 2022, 8:45 AM
Auditorium Generali (Trieste Convention Centre)

Auditorium Generali

Trieste Convention Centre

viale Miramare, 24/2 Trieste - Italy



  • Evgeny Schneidmiller (Deutsches Elektronen-Synchrotron)

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Paris Franz (Stanford University), Zhaoheng Guo (Stanford University), River Robles (Stanford University), Dorian Bohler (SLAC National Accelerator Laboratory), David Cesar (SLAC National Accelerator Laboratory), Xinxin Cheng (SLAC National Accelerator Laboratory), Taran Driver (SLAC National Accelerator Laboratory), Joseph Duris (SLAC National Accelerator Laboratory), Andrei Kamalov (SLAC National Accelerator Laboratory), Siqi Li (SLAC National Accelerator Laboratory), Razib Obaid (SLAC National Accelerator Laboratory), Nick Sudar (SLAC National Accelerator Laboratory), Anna Wang (SLAC National Accelerator Laboratory), Zhen Zhang (SLAC National Accelerator Laboratory), James Cryan (SLAC National Accelerator Laboratory)
8/23/22, 8:45 AM
Invited Orals

The natural time scale of valence electronic motion in molecular systems is on the order of hundreds of attoseconds. Consequently, the time-resolved study of electronic dynamics requires a source of sub-femtosecond pulses. Pulses in the soft x-ray domain can access core-level electrons, enabling the study of site-specific electron dynamics through attosecond pump/probe experiments. As...

Christoph Kittel (Paul Scherrer Institut), Marco Calvi (Paul Scherrer Institut), Eduard Prat (Paul Scherrer Institut), Dr Guanglei Wang (Paul Scherrer Institut), Dr Nicholas Sammut (University of Malta)
8/23/22, 9:45 AM
Contributed Oral

This contribution presents the experimental demonstration of improved performance of an X-ray free-electron-laser (FEL) using the optical klystron mechanism and helical undulator configuration in comparison to a standard planar undulator without optical klystron. The demonstration has been carried out at Athos, the soft X-ray beamline of SwissFEL. Athos has variable-polarization undulators and...

Myung Hoon Cho (Pohang Accelerator Laboratory)
8/23/22, 10:10 AM
Contributed Oral

Phase shifters at undulator line are usually used for optimizing FEL intensity by setting 'in-phase' by matching the FEL pulse and electrons phases. π-offset so called ‘out-phase’ may suppress FEL intensity at the resonant frequency, therefore the 'out-phase' condition is an unwanted state. However, this 'out-phase' setting can arise side band spectrums. This phenomena can be explained by the...

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