Evaluation of a CdZnTe pixel array for X- and γ-ray spectroscopic imaging

X-ray imaging is an essential tool for a wide range of disciplines. Whilst the majority of applications rely on analog integrating or on photon counting formats, the future development of this field lies in the exploitation of spatially resolved spectroscopy and in particular, using materials which can operate with near Fano limited energy resolution at room temperature. This communication focuses on a new prototype 16×16 cadmium zinc telluride (CdZnTe) pixel array fabricated by eV Products [http://www.evproducts.com/ [1]], which, assembled with an ASIC made by Ideas ASA [http://www.ideas.no/products/ASICs/pdf/XA1.6.pdf [2]], provides both imaging and spectroscopic capabilities at the individual pixel level. We report detailed results of hard X-ray measurements carried out at the X1 beam line of the HASYLAB synchrotron radiation facility in Hamburg, Germany [http://www-hasylab.desy.de/facility/ [3]].