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

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
0168-9002
Publisher
Elsevier
Publication Date
Volume
598
Issue
2
Identifiers
DOI: 10.1016/j.nima.2008.09.049
Keywords
  • X-Ray Imaging
  • Photon Counting Detector
  • Medipix
  • Pixel Detector
  • Spectrum Reconstruction
Disciplines
  • Physics

Abstract

Abstract 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.

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