Conference Proceedings

Validation of a Geant4 model of the X-ray fluorescence microprobe at the Australian Synchrotron

Matthew Richard Dimmock, Martin Daly de Jonge, Daryl Lloyd Howard, Simon Alexander James, Robin Kirkham, David Maurice Paganin, David John Paterson, Gary Ruben, Chris Gregory Ryan, Jeremy Michael Cooney Brown

JOURNAL OF SYNCHROTRON RADIATION | WILEY-BLACKWELL | Published : 2015

Abstract

A Geant4 Monte Carlo simulation of the X-ray fluorescence microprobe (XFM) end-station at the Australian Synchrotron has been developed. The simulation is required for optimization of the scan configuration and reconstruction algorithms. As part of the simulation process, a Gaussian beam model was developed. Experimental validation of this simulation has tested the efficacy for use of the low-energy physics models in Geant4 for this synchrotron-based technique. The observed spectral distributions calculated in the 384 pixel Maia detector, positioned in the standard back-scatter configuration, were compared with those obtained from experiments performed at three incident X-ray beam energies: ..

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University of Melbourne Researchers

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Funding Acknowledgements

The authors would like to acknowledge the Australian Synchrotron XFM beamline staff for technical support, and the Australian Synchrotron for approving beam time. This work was also supported by the Multi-Modal Australian ScienceS Imaging and Visualization Environment (MASSIVE) (see http://www.massive.org.au).