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Experimental comparison of pixel detector arrays and CCD-based systems for X-ray area detection on synchrotron beamlines

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3 Author(s)
Ponchut, C. ; Eur. Synchrotron Radiat. Facility, Grenoble, France ; Zontone, Federico ; Graafsma, H.

We compared the detection characteristics of a pixel area X-ray detector, Medipix-2, with those of a CCD-based X-ray detector. The goal was to challenge the overall imaging performance of the emerging pixel area detection technique against that of a well-known detection device, in view of applications on synchrotron beamlines. A CCD-based detector was chosen as the reference because of the intensive and widespread use of CCD systems on beamlines. In order to establish the comparison on an absolute side-by-side basis we built an optimized CCD-based system with the same input pixel size as Medipix-2 and we characterized both systems in identical conditions. We present the results obtained, in particular the frequency-dependent noise, spatial response and DQE. We also report on various test experiments with Medipix-2 in X-ray scattering and X-ray imaging using a synchrotron source.

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Nuclear Science, IEEE Transactions on  (Volume:52 ,  Issue: 5 )