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Related Experiment Video

Updated: Feb 8, 2026

Online Size-exclusion and Ion-exchange Chromatography on a SAXS Beamline
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SwissFEL Aramis beamline photon diagnostics.

Pavle Juranić1, Jens Rehanek1, Christopher A Arrell1

  • 1SwissFEL, Paul Scherrer Institut, Villigen 5232, Switzerland.

Journal of Synchrotron Radiation
|July 7, 2018
PubMed
Summary
This summary is machine-generated.

The SwissFEL Aramis beamline offers advanced photon diagnostics for hard X-ray free-electron lasers (FELs). New temporal diagnostics achieve femtosecond pulse length measurements, enhancing experimental optimization.

Keywords:
FEL physicshard X-raysinstrumentationphoton diagnostics

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Area of Science:

  • X-ray science
  • Free-electron laser technology
  • Photon diagnostics

Background:

  • The SwissFEL Aramis beamline operates between 1.77-12.7 keV.
  • Online photon diagnostics are crucial for optimizing FEL performance and experimental analysis.

Purpose of the Study:

  • To provide an overview of the diagnostics tools at SwissFEL.
  • To detail the design, working principles, and capabilities of these tools.
  • To introduce novel diagnostic developments.

Main Methods:

  • Utilizing a suite of online photon diagnostics.
  • Employing destructive screens for beam shape and size analysis.
  • Implementing THz-streaking for temporal diagnostics.

Main Results:

  • Detailed characterization of flux, spectrum, position, pulse length, and arrival time jitter.
  • Measurement of beam shape and size.
  • Demonstration of THz-streaking for femtosecond pulse length resolution.

Conclusions:

  • The diagnostic tools at SwissFEL enable comprehensive online analysis.
  • New temporal diagnostics significantly advance hard X-ray FEL capabilities.
  • These tools are vital for users and operators to optimize experiments and beamline performance.