Author/Authors :
Passmore، نويسنده , , M.S. and Bates، نويسنده , , R. and Mathieson، نويسنده , , K. Sue OShea، نويسنده , , V. and Rahman، نويسنده , , M. and Seller، نويسنده , , P. and Smith، نويسنده , , K.M.، نويسنده ,
Abstract :
The Large Area Detector is a photon counting detector based on pixel readout ASICs with 64×64 arrays of 150 μm square pixels bump bonded to a 300 μm thick Si detector. It is designed for X-ray diffraction studies and is capable of up to 1 MHz count rate per pixel. A prototype has been tested at the synchrotron radiation source in Daresbury in a 19.5 keV X-ray beam. This paper focuses on the spatial resolution and noise performance. The calculation of modulation transfer functions leads to analytical formulae allowing the determination of the theoretical spatial resolution.
Keywords :
MTF , Spatial resolution , pixel , Poisson noise , Photon-Counting , detector , X-Ray
