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Bunch mode specific rate corrections for PILATUS3 detectors.

P Trueb1, C Dejoie2, M Kobas1

  • 1DECTRIS Ltd, 5400 Baden, Switzerland.

Journal of Synchrotron Radiation
|May 2, 2015
PubMed
Summary
This summary is machine-generated.

New PILATUS3 X-ray detectors achieve accurate intensity measurements at high photon fluxes using Monte Carlo simulations for dead-time corrections. This technology improves data accuracy by up to 40% and enables high-speed data acquisition.

Keywords:
Monte Carlo simulationPILATUS detectorscount rate correctionphoton counting

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Area of Science:

  • Synchrotron radiation science
  • Particle detector technology
  • Photonics

Background:

  • PILATUS X-ray detectors are widely used at synchrotron facilities worldwide.
  • Accurate intensity measurements are crucial, especially at high photon fluxes where dead-time corrections are necessary.
  • Varying synchrotron bunch modes and detector settings complicate accurate dead-time correction.

Purpose of the Study:

  • To characterize the new PILATUS3 detector generation at high count rates.
  • To develop and validate a method for accurate dead-time corrections across diverse synchrotron operating conditions.
  • To assess the impact of novel detector technologies on high-flux data acquisition.

Main Methods:

  • Implementation of a Monte Carlo simulation to model the detector's counting mechanism.
  • Prediction of dead-time corrections for arbitrary synchrotron bunch modes and detector settings.
  • Experimental validation of simulated corrections using data from multiple synchrotron sources.

Main Results:

  • Simulated dead-time corrections were compared with experimental data, showing good agreement.
  • Bunch mode-specific corrections based on simulation improved intensity measurement accuracy by up to 40% at high photon rates.
  • PILATUS3's instant retrigger technology significantly reduced rate correction dependency on bunch mode structure.
  • Instant retrigger technology enables data acquisition rates of up to 15 million photons per second per pixel.

Conclusions:

  • Monte Carlo simulations provide an effective tool for accurate dead-time correction in PILATUS detectors.
  • PILATUS3 detectors with instant retrigger technology offer improved accuracy and high-throughput capabilities for synchrotron experiments.
  • The developed correction method enhances the reliability of intensity data obtained under challenging high-flux conditions.