Author/Authors :
Delpierre، نويسنده , , P. and Basolo، نويسنده , , S. and Berar، نويسنده , , J.-F. and Bordesoule، نويسنده , , M. and Boudet، نويسنده , , N. and Breugnon، نويسنده , , P. and Caillot، نويسنده , , B. and Chantepie، نويسنده , , B. and Clemens، نويسنده , , J.C. and Dinkespiler، نويسنده , , B. and Hustache-Ottini، نويسنده , , S. and Meessen، نويسنده , , C. and Menouni، نويسنده , , M. and Morel، نويسنده , , C. and Mouget، نويسنده , , C. and Pangaud، نويسنده , , P. and Potheau، نويسنده , , R. and Vigeolas، نويسنده , , E.، نويسنده ,
Abstract :
Experiments on high-flux and high-brilliance third-generation synchrotron X-ray sources are now limited by detector performance. Photon-counting hybrid pixel detectors are being investigated as a solution to improve the dynamic range and the readout speed of the available 2D detectors. The XPAD2 is a large-surface hybrid pixel detector (68×65 mm2) with a dynamic response, which ranges from 0.01 to 106 photons/pixel/s. High-resolution data were recorded using the XPAD2. The comparison with data measured using a conventional setup shows a gain on measurement duration by a factor 20 and on dynamic range. A new generation of pixel detector (XPAD3) is presently under development. For this, a new electronic chip (the XPAD3) is designed to improve spatial resolution by using 130 μm pixels and detector efficiency by using CdTe sensors. XPAD2 is also operated with PIXSCAN, a CT scanner for mice.
Keywords :
Photon detector , Hybrid Pixels , Photon counting , CT scanner
