Title of article
Simulation of the detective quantum efficiency for a hybrid pixel detector
Author/Authors
del Risco Norrlid، نويسنده , , L. and Edling، نويسنده , , Fredrik and Fransson، نويسنده , , K. and Brenner، نويسنده , , R. and Bingefors، نويسنده , , N. and Gustafsson، نويسنده , , L. and Rِnnqvist، نويسنده , , C.، نويسنده ,
Pages
9
From page
528
To page
536
Abstract
A simulation tool has been developed for the analysis of the performance of an X-ray imaging hybrid pixel detector. The photon transport and charge collection were simulated with the aid of the Monte Carlo based code GEANT and the readout signal processing was simulated in a program written in the LabView programming environment. Results of the spatial frequency-dependent detective quantum efficiency are presented and the influence of charge sharing, the threshold settings, level of exposure, the noise sources on the detector performance are studied. The detector was found to operate quantum limited down to an exposure of 0.08 μGy, below which it is limited by the readout noise. The threshold setting has a strong influence on both the efficiency and the spatial resolution due to charge sharing, and a compromise between the two is necessary. The optimized threshold value corresponds to half of the mean energy of the input spectrum.
Keywords
DQE , X-Ray , Monte Carlo , Hybrid pixel detector
Journal title
Astroparticle Physics
Record number
2026463
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