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The NSLS 100 element solid state array detector.

L R Furenlid1, H W Kraner2, L C Rogers2

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Summary
This summary is machine-generated.

Next-generation X-ray absorption spectroscopy demands faster detectors. A new 100-element silicon (Si) array detector significantly increases count rates for trace element measurements, overcoming current limitations.

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Instrumentation

Background:

  • X-ray absorption studies of dilute samples rely on fluorescence detection.
  • Solid-state detectors are crucial for trace element analysis due to their ability to differentiate fluorescence from scattered photons.
  • Current 13-element germanium (Ge) array detectors are nearing saturation at high-brightness synchrotron sources.

Purpose of the Study:

  • To design and develop a next-generation detector with significantly higher count rates for X-ray absorption spectroscopy.
  • To address the limitations of current detectors in handling high photon fluxes from advanced synchrotron sources.

Main Methods:

  • Development of a 100-element silicon (Si) array detector in a 10x10 matrix configuration.
  • Utilizing ultrahigh purity silicon and a liquid nitrogen dewar assembly.
  • Employing charge-sensitive preamplifiers, shaping amplifiers, single-channel analyzers, and scalers for signal processing.
  • Implementing a comprehensive electronic system for diagnostics and calibration, controlled by LabView software.

Main Results:

  • The 100-element Si array detector is designed to achieve substantially higher total count rates compared to existing detectors.
  • The detector incorporates advanced electronics for precise signal processing and channel calibration.
  • The instrument is controlled via LabView software, facilitating data collection and beamline integration.

Conclusions:

  • The developed 100-element Si array detector represents a significant advancement for X-ray absorption spectroscopy.
  • This new instrument will enable more efficient and sensitive trace element measurements at high-brightness synchrotron facilities.
  • The detector design overcomes current technological bottlenecks, paving the way for future research.