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Evaluation of Controlled-Drift Detectors in X-Ray Spectroscopic Imaging Applications

  • Andrea Castoldi (a1) (a2), Chiara Guazzoni (a1) (a2), Cigdem Ozkan (a1) (a2) (a3), Giorgio Vedani (a1), Robert Hartmann (a4) (a5) and Aniouar Bjeoumikhov (a6)...

Abstract

A detector that looks promising for advanced imaging modalities—such as X-ray absorption contrast imaging, X-ray fluorescence imaging, and diffraction-enhanced imaging—is the controlled-drift detector (CDD). The CDD is a novel two-dimensional X-ray imager with energy resolving capability of spectroscopic quality. It is built on a fully depleted silicon wafer and features fast readout while being operated at or near room temperature. The use of CDDs in the aforementioned applications allows translating these techniques from synchrotron-based experiments to laboratory-size experiments using polychromatic X-ray generators. We have built a dedicated and versatile detection module based on a 36 mm2 CDD chip featuring pixels of 180 × 180 μm2, and we evaluated the system performance in different X-ray imaging applications both with synchrotron-based experiments and in the laboratory environment.

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Corresponding author

Corresponding author. E-mail: andrea.castoldi@polimi.it

References

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