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Improved count rate corrections for highest data quality with PILATUS detectors.
P Trueb1, B A Sobott, R Schnyder
1DECTRIS Ltd, 5400 Baden, Switzerland. peter.trueb@dectris.com
Journal of Synchrotron Radiation
|April 20, 2012
Summary
PILATUS detector systems, essential for synchrotron X-ray experiments, require rate correction factors to account for dead-time losses at high photon rates. Accurate factors, determined via Monte Carlo simulations, improve data quality and enable measurements up to 10(7) photons s(-1) pixel(-1).
Area of Science:
- X-ray science
- Detector physics
- Synchrotron radiation instrumentation
Background:
- PILATUS detector systems are crucial for third-generation synchrotron X-ray experiments.
- Their hybrid pixel detector technology offers single-photon counting for precise measurements.
- High photon flux can cause dead-time losses, necessitating rate correction.
Purpose of the Study:
- To compute accurate rate correction factors for PILATUS detectors.
- To investigate the impact of detector settings and X-ray beam time structure on these factors.
- To validate simulation results against experimental data.
Main Methods:
- Monte Carlo simulation was employed to calculate rate correction factors.
- Simulations considered detector settings and synchrotron X-ray beam time structure.
- Results were compared with experimentally determined correction factors.
Main Results:
- Simulated correction factors showed good agreement with experimental data across various settings and synchrotrons.
- Accurate rate correction factors significantly enhance X-ray data quality at high photon fluxes.
- Measurements up to 10(7) photons s(-1) pixel(-1) are achievable with optimized settings and beam structures.
Conclusions:
- Monte Carlo simulations provide reliable rate correction factors for PILATUS detectors.
- Optimized detector settings and beam time structure are key to maximizing data acquisition rates.
- This work improves the reliability and performance of X-ray diffraction experiments at high flux.
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