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Related Experiment Videos

The ePix10k 2-megapixel hard X-ray detector at LCLS.

Tim Brandt van Driel1, Silke Nelson1, Rebecca Armenta1

  • 1SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.

Journal of Synchrotron Radiation
|May 9, 2020
PubMed
Summary

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This summary is machine-generated.

The new ePix10k detector offers high dynamic range for X-ray free-electron laser (XFEL) experiments. It provides improved performance and a straightforward upgrade path from previous detectors like CSPAD.

Area of Science:

  • X-ray Science
  • Particle Detector Technology
  • Synchrotron Radiation Instrumentation

Background:

  • The Linac Coherent Light Source (LCLS) requires advanced detectors for its 120 Hz repetition rate.
  • The previous CSPAD detector has been in operation since 2011.
  • Upgrading detector technology is crucial for advancing XFEL capabilities.

Purpose of the Study:

  • To evaluate the performance of the new ePix10ka2M (ePix10k) detector.
  • To assess its suitability for X-ray free-electron laser (XFEL) applications.
  • To characterize the dynamic range and gain settings of the ePix10k detector.

Main Methods:

  • The ePix10k detector, a hybrid pixel detector with 2.16 megapixels, was utilized.
  • Three fixed gain settings (low, medium, high) were evaluated.
Keywords:
XFELdetectordetector non-linearitydiffuse scattering

Related Experiment Videos

  • Performance was assessed under typical XFEL conditions during an LCLS X-ray diffuse scattering experiment.

    • Main Results:

    • The ePix10k detector demonstrated a high dynamic range, from single photon counting to 10000 photons/pixel/pulse at 8 keV.
    • Its performance was evaluated using 9.5 keV X-ray photons scattered from a thin liquid jet.
    • The detector showed suitability for various XFEL experiments, replacing the CSPAD with improved performance.

    Conclusions:

    • The ePix10k detector is a significant advancement for hard X-ray detection at XFEL facilities.
    • Its high dynamic range and performance make it ideal for demanding XFEL experiments.
    • The detector offers a seamless upgrade path for future high-repetition-rate XFELs.