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Related Experiment Videos

A fast mechanical shutter for submicrosecond time-resolved synchrotron experiments.

Milan Gembicky1, Dan Oss, Ryan Fuchs

  • 1Department of Chemistry, State University of New York at Buffalo, NY 14260-3000, USA. gembicky@buffalo.edu

Journal of Synchrotron Radiation
|August 27, 2005
PubMed
Summary

A novel X-ray beam shutter for time-resolved photocrystallography offers high speed and low jitter. This cost-effective design enhances X-ray pulse synchronization and data collection efficiency at synchrotron sources.

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Area of Science:

  • Physics
  • Materials Science
  • Engineering

Background:

  • Time-resolved photocrystallography requires precise X-ray beam control.
  • Existing shutters may lack the speed or accuracy needed for advanced synchrotron experiments.

Purpose of the Study:

  • To develop and test a new high-speed, high-repetition-rate X-ray beam shutter.
  • To achieve precise synchronization for time-resolved X-ray crystallography.

Main Methods:

  • Utilized a commercial DC servomotor and frequency-lock control linear amplifier.
  • Incorporated an air bearing for stable motor rotation.
  • Designed an interchangeable chopper disc with 45 radial slots.

Main Results:

  • Achieved rotation speeds from 12,000 to 30,000 rpm with less than 2 ns jitter (6-sigma).

Related Experiment Videos

  • Enabled synchronization with Advanced Photon Source (APS) orbit frequencies (13.6–22.6 kHz).
  • Opening time window of 2.11 microseconds at 30,000 rpm with a 350 µm slot.

    • Conclusions:

    • The new shutter design offers high accuracy and low jitter for time-resolved photocrystallography.
    • Provides flexibility and efficient X-ray utilization at a modest cost.
    • Suitable for advanced experiments at synchrotron light sources.