Title :
Tuning tool for image quality optimization of a hybrid semiconductor pixel detector
Author :
Norrlid, Ld.R. ; Edling, Fredrik ; Fransson, Kjell ; Brenner, Richard ; Rönnqvist, Camilla ; Gustafsson, Leif ; Bingefors, Nils
Author_Institution :
Dept. of Radiat. Sci., Uppsala Univ., Sweden
Abstract :
Linear systems theory is used for the numerical assessment of the detective quantum efficiency (DQE) of the hybrid semiconductor pixel detector DIXI. The Monte Carlo based code GEANT is used to simulate the photon transport in the sensor, charge transport modeling is treated analytically and the readout chip is simulated using PSPICE. The DQE for two differently shaped X-ray spectra of the same quality and for different operational conditions of the readout chip regarding the discrimination level are computed in order to validate the model. The model described in this paper can be adopted for optimizing the detector.
Keywords :
Monte Carlo methods; X-ray detection; X-ray imaging; cascade systems; high energy physics instrumentation computing; optimisation; position sensitive particle detectors; readout electronics; semiconductor counters; DIXI hybrid semiconductor pixel detector; GEANT Monte Carlo based code; PSPICE; X-ray imaging; cascaded linear system; charge transport modeling; detective quantum efficiency; different operational conditions; differently shaped X-ray spectra; discrimination level; image quality optimization; linear systems theory; photon transport; readout chip; sensor; tuning tool; Analytical models; Computational modeling; Detectors; Image quality; Linear systems; Monte Carlo methods; Optoelectronic and photonic sensors; Pixel; Quantum mechanics; SPICE;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.824822
