Author/Authors :
Toyokawa، نويسنده , , H. and Broennimann، نويسنده , , Ch. and Eikenberry، نويسنده , , E.F. and Henrich، نويسنده , , B. and Kawase، نويسنده , , M. and Kobas، نويسنده , , M. and Kraft، نويسنده , , P. and Sato، نويسنده , , M. and Schmitt، نويسنده , , B. and Suzuki، نويسنده , , M. and Tanida، نويسنده , , H. and Uruga، نويسنده , , T.، نويسنده ,
Abstract :
At the Paul Scherrer Institute PSI an X-ray single photon counting pixel detector (PILATUS) based on the hybrid-pixel detector technology was developed in collaboration with SPring-8. The detection element is a 320 or 450 μm thick silicon sensor forming pixelated pn-diodes with a pitch of 172 μm×172 μm. An array of 2×8 custom CMOS readout chips are indium bump-bonded to the sensor, which leads to 33.5 mm×83.8 mm detective area. Each pixel contains a charge-sensitive amplifier, a single level discriminator and a 20 bit counter. This design realizes a high dynamic range, short readout time of less than 3 ms, a high framing rate of over 200 images per second and an excellent point-spread function. The maximum counting rate achieves more than 2×106 X-rays/s/pixel.
Keywords :
Photon counting , x-ray imaging , Pixel detector , Synchrotron radiation instrumentation
