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WFSuite: a Python software suite for X-ray wavefront sensing and at-wavelength metrology.

Xianbo Shi1, Luca Rebuffi1, Zhi Qiao1

  • 1Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave, Lemont, IL 60439, USA.

Journal of Synchrotron Radiation
|June 16, 2026
PubMed
Summary
This summary is machine-generated.

WFSuite is a Python software for X-ray wavefront sensing and metrology. It enables precise optical characterization at synchrotrons and X-ray free-electron lasers using advanced speckle-based techniques.

Keywords:
X-ray wavefront sensingat-wavelength metrologycoded maskspeckle tracking

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Area of Science:

  • X-ray optics and instrumentation
  • Advanced metrology techniques
  • Synchrotron and X-ray free-electron laser (XFEL) applications

Background:

  • Accurate X-ray wavefront sensing is crucial for optimizing performance in synchrotron and XFEL facilities.
  • Existing metrology tools often lack the flexibility and integration required for complex beamline environments.
  • Speckle-based techniques offer powerful methods for characterizing X-ray optics and beams.

Purpose of the Study:

  • To introduce WFSuite, a comprehensive Python software suite for X-ray wavefront sensing and metrology.
  • To provide integrated tools for both relative and absolute speckle-based measurements.
  • To facilitate efficient optics characterization, beam diagnostics, and real-time alignment at X-ray facilities.

Main Methods:

  • Implementation of wavelet-transform-based X-ray speckle tracking (WXST) and wavelet-transform-based speckle vector tracking (WSVT) for relative metrology.
  • Utilization of coded-mask speckle patterns with numerically simulated references for absolute phase retrieval.
  • Integration of a neural-network-based method (SPINNet) for single-shot wavefront reconstruction.
  • Support for 2D image inputs in TIFF and HDF5 formats.

Main Results:

  • WFSuite successfully retrieves differential phase and wavefront distortions using speckle pattern comparison.
  • The absolute phase module enables single-shot wavefront reconstruction.
  • The software outputs essential data including displacement fields, phase gradients, and reconstructed wavefronts.
  • Successful deployment and application in optics characterization and beam diagnostics at multiple synchrotron beamlines.

Conclusions:

  • WFSuite offers a modular, flexible, and extensible framework for routine X-ray wavefront analysis.
  • Its unified interface simplifies integration with beamline control systems.
  • The software enhances the capabilities for precise metrology in advanced X-ray research environments.