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FEL2022

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

FEL2022 Local Organiser Committee

Session

SASE FELs

TUA
23 Aug 2022, 08:45
Auditorium Generali (Trieste Convention Centre)

Auditorium Generali

Trieste Convention Centre

viale Miramare, 24/2 Trieste - Italy

Conveners

SASE FELs

  • Evgeny Schneidmiller (Deutsches Elektronen-Synchrotron DESY)

Presentation materials

There are no materials yet.

  1. 191. Cascaded Amplification of Attosecond X-Ray Pulses: Towards TW-Scale Ultrafast X-Ray Free-Electron Lasers (TUAI1)
    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)
    23/08/2022, 08:45
    SASE FEL
    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...

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  2. 238. Short Pulses and 2-Color Capabilities at the SASE3 FEL Line of the European XFEL (TUAI2)
    Svitozar Serkez (European XFEL GmbH)
    23/08/2022, 09:15
    SASE FEL
    Invited Orals

    European XFEL offers a unique combination of high electron
    energy and soft X-ray SASE3 undulator resonant to low photon energies with
    high K parameter. The long undulator allows us to employ split-undulator
    scheme to deliver pump-probe radiation to users. Pulse energies depend on
    photon energy and range from 100uJ at 2200eV to 900uJ at 600eV per pulse
    respectively. We plan to install...

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  3. 163. Demonstration of Enhanced FEL Performance with Optical Klystron and Helical Undulators (TUAO3)
    Christoph Kittel (Paul Scherrer Institute), Marco Calvi (Paul Scherrer Institut), Eduard Prat (Paul Scherrer Institute), Dr Guanglei Wang (Paul Scherrer Institute), Dr Nicholas Sammut (University of Malta)
    23/08/2022, 09:45
    SASE FEL
    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...

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  4. 7. Two-Colored FEL Generation Using Phase Shifters at Undulator (TUAO4)
    Myung Hoon Cho (Pohang Accelerator Laboratory)
    23/08/2022, 10:10
    SASE FEL
    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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