Simulations of High Count Rate Performance of Hybrid Pixel Detectors with Algorithms Dealing with Charge Sharing

Hybrid pixel detectors, operating in a single photon counting mode provide noiseless imaging, good spatial resolution and adjustable energy thresholds. Decreasing pixel size allows operation with photon fluxes of higher intensities. However, with decreasing pixel pitch, a detector suffers more significantly from charge sharing. Therefore, various algorithms are implemented on-chip to mitigate charge sharing effect and prevent the counts loss. Nonetheless, if the algorithm dealing with charge sharing is implemented, detector dead time increases. The aim of this paper is to study how the count rate performance of hybrid pixel detectors is limited by using anti charge sharing techniques.