Journal article

Bunch mode specific rate corrections for PILATUS3 detectors

P Trueb, C Dejoie, M Kobas, P Pattison, DJ Peake, V Radicci, BA Sobott, DA Walko, C Broennimann

JOURNAL OF SYNCHROTRON RADIATION | INT UNION CRYSTALLOGRAPHY | Published : 2015

Abstract

PILATUS X-ray detectors are in operation at many synchrotron beamlines around the world. This article reports on the characterization of the new PILATUS3 detector generation at high count rates. As for all counting detectors, the measured intensities have to be corrected for the dead-time of the counting mechanism at high photon fluxes. The large number of different bunch modes at these synchrotrons as well as the wide range of detector settings presents a challenge for providing accurate corrections. To avoid the intricate measurement of the count rate behaviour for every bunch mode, a Monte Carlo simulation of the counting mechanism has been implemented, which is able to predict the correc..

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Grants

Awarded by US Department of Energy, Office of Science, Office of Basic Energy Sciences


Funding Acknowledgements

PT would like to thank Stefan Brandstetter for calibrating the detectors and Roger Schnyder for providing the Spectre netlist used for the Monte Carlo simulation. Pamela Amrein was very helpful by organizing the transport of the detectors. DJP and BAS gratefully acknowledge Nigel Kirby for optimizing the experimental setup and for maximizing the photon flux during the measurements. Use of the Advanced Photon Source is supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.