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Related Experiment Videos

Plane-grating monochromator at BESSY II using collimated light.

R Follath1, F Senf, W Gudat

  • 1BESSY, Lentzeallee 100, 14195 Berlin, Germany.

Journal of Synchrotron Radiation
|July 21, 2004
PubMed
Summary

Researchers optimized a versatile vacuum ultraviolet (VUV) beamline at BESSY II using a plane-grating monochromator (PGM). This setup offers flexible operation for various experimental needs, enhancing synchrotron radiation research.

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Area of Science:

  • Synchrotron Radiation Science
  • Spectroscopy
  • Materials Science

Background:

  • The German synchrotron facility BESSY II utilizes the U125 undulator to cover the vacuum ultraviolet (VUV) photon energy range.
  • Existing beamlines require optimization for flexible experimental setups.

Purpose of the Study:

  • To characterize and optimize a plane-grating monochromator (PGM) beamline at BESSY II.
  • To demonstrate the flexible operation of the PGM for various experimental requirements.

Main Methods:

  • Utilized the first, third, and fifth harmonics of the U125 undulator for VUV photon generation (15-600 eV).
  • Employed a plane-grating monochromator (PGM) with a variable deviation angle.
  • Operated the PGM using collimated radiation and software control for mode selection.

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Main Results:

  • The PGM beamline successfully covers the 15-600 eV VUV photon energy range.
  • Flexible operation modes were achieved, including high spectral resolution, high-order suppression, and high-flux mode.
  • Software control allows for easy switching between operational modes based on user demands.

Conclusions:

  • The optimized PGM beamline at BESSY II provides a highly flexible VUV radiation source.
  • This enhanced capability supports a wider range of experiments in synchrotron radiation research.
  • The adaptable nature of the beamline improves user efficiency and experimental outcomes.