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Development of a two-dimensional virtual-pixel X-ray imaging detector for time-resolved structure research.
Andre Orthen1, Hendrik Wagner, Sorin Martoiu
1Universität Siegen, Fachbereich Physik, Emmy-Noether-Campus, Walter-Flex-Strasse 3, D-57072 Siegen, Germany. orthen@alwa02.physik.uni-siegen.de
Journal of Synchrotron Radiation
|February 13, 2004
Summary
This study introduces a novel 2D X-ray detector using single-photon counting and gas electron multipliers for microsecond time-resolved research. The detector shows promising imaging performance for advanced structural studies.
Area of Science:
- Experimental Physics
- Materials Science
- Biophysics
Background:
- Advanced X-ray imaging requires detectors with high temporal resolution.
- Gas Electron Multiplier (GEM) structures offer gas amplification for sensitive X-ray detection.
- Time-resolved studies are crucial for understanding dynamic processes in materials and biological systems.
Purpose of the Study:
- To present an interpolating two-dimensional X-ray imaging detector.
- To evaluate its performance for time-resolved structure research.
- To demonstrate its application in a lipid temperature-jump experiment.
Main Methods:
- Development of a 2D X-ray detector utilizing single-photon counting and GEM structures.
- Testing the detector prototype at a synchrotron light source (SAXS beamline, 8 keV).
- Characterization of imaging performance using apertures and diffraction targets.
Main Results:
- The detector system achieves time resolution in the microsecond domain.
- Successful imaging performance was demonstrated with standard targets.
- The detector was applied to a time-resolved lipid temperature-jump experiment.
Conclusions:
- The developed GEM-based X-ray detector is suitable for time-resolved structural research.
- It offers high temporal resolution for studying dynamic phenomena.
- The detector shows potential for various applications in materials science and biophysics.