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Related Experiment Videos

A new high-speed beam chopper for time-resolved X-ray studies.

A McPherson1, J Wang, P L Lee

  • 1Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4800, USA. armon@aps.anl.gov

Journal of Synchrotron Radiation
|April 13, 2006
PubMed
Summary

A novel high-speed X-ray beam chopper was developed for the Advanced Photon Source (APS). This device synchronizes with the APS storage ring, enabling precise control over X-ray beam access for experiments.

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Area of Science:

  • X-ray Science
  • Accelerator Physics
  • Instrumentation

Background:

  • The Advanced Photon Source (APS) generates high-intensity X-ray beams crucial for scientific research.
  • Precise temporal control of X-ray pulses is essential for advanced experimental techniques.

Purpose of the Study:

  • To develop and test a new high-speed X-ray beam chopper.
  • To enable phase-locked operation with the APS storage ring's temporal structure.
  • To allow flexible positioning of the storage ring's fill pattern within the chopper's open window.

Main Methods:

  • Development of a high-speed X-ray beam chopper.
  • Phase-locking the chopper's rotation to the APS storage ring's orbital frequency.
  • Characterization of the chopper's open window time (2450 ns).

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Main Results:

  • Successful development and testing of the high-speed X-ray beam chopper.
  • Achieved phase-locking capability with the APS storage ring.
  • Demonstrated control over positioning the storage ring fill pattern within the transmission window.

Conclusions:

  • The new X-ray beam chopper offers precise temporal control over X-ray delivery from the APS.
  • This technology enhances experimental flexibility by allowing specific portions of the fill pattern to be accessed.
  • The device is a valuable tool for advanced X-ray science applications.