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A 20 kpixels CdTe photon-counting imager using XPAD chip

Abstract : A 20 kpixels CdTe sensor has been hybridized on XPAD3S CMOS photon counting chips, forming a 19200 pixels imaging device. P-type CdTe with rectifying contact has been employed. This sensor works in hole collection mode with a pulse shaping time of about 150 ns. Detector construction and operation are described and first results obtained with 241Am source as well as diffraction images using an X-ray synchrotron beam are presented. Polarisation effects are present but remain at a very manageable level. Keywords: pixel detector, photon counting, CdTe, hole collection, XPAD3
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Contributor : Danielle Cristofol <>
Submitted on : Monday, March 3, 2008 - 3:37:47 PM
Last modification on : Monday, March 29, 2021 - 3:22:25 PM




S. Basolo, Jean-François Bérar, Nathalie Boudet, P. Breugnon, B. Chantepie, et al.. A 20 kpixels CdTe photon-counting imager using XPAD chip. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2008, 589, pp.268-274. ⟨10.1016/j.nima.2008.02.042⟩. ⟨in2p3-00260076⟩



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