Reconstruction of X-ray spectra with the energy sensitive photon counting detector Medipix2

A hybrid photon counting detector like the Medipix can be used to measure the energy deposited by X-ray photons in a sensor pixel. We calculate the expected energy deposition distribution with the help of the Monte-Carlo simulation tool ROSI and thus determine the energy response function. These res...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2009-01, Vol.598 (2), p.510-514
Main Authors: Michel, Thilo, Talla, Patrick Takoukam, Firsching, Markus, Durst, Jürgen, Böhnel, Michael, Anton, Gisela
Format: Article
Language:English
Subjects:
Medipix
Photon counting detector
Pixel detector
Spectrum reconstruction
X-ray imaging
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Summary:A hybrid photon counting detector like the Medipix can be used to measure the energy deposited by X-ray photons in a sensor pixel. We calculate the expected energy deposition distribution with the help of the Monte-Carlo simulation tool ROSI and thus determine the energy response function. These response functions are used in two deconvolution methods to determine X-ray spectra from measured energy deposition spectra. We present reconstruction results for monoenergetic and polychromatic X-ray spectra.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2008.09.049