Bunch mode specific rate corrections for PILATUS3 detectors.

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.