2013
DOI: 10.1016/j.nima.2013.01.016
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Performance of pixelated CZT detectors as a function of pixel and steering grid layout

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Cited by 8 publications
(7 citation statements)
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References 18 publications
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“…efficiency of CdZnTe detectors, as reported, e.g., in [15]. When the steering grid is biased to a slightly negative voltage with respect to the grounded pixels (around −50 V, see also appendix B), electrons are forced to move towards the pixels when approaching the anode surface, reducing charge loss in the pixels gap.…”
Section: Jinst 17 P08004supporting
confidence: 59%
See 1 more Smart Citation
“…efficiency of CdZnTe detectors, as reported, e.g., in [15]. When the steering grid is biased to a slightly negative voltage with respect to the grounded pixels (around −50 V, see also appendix B), electrons are forced to move towards the pixels when approaching the anode surface, reducing charge loss in the pixels gap.…”
Section: Jinst 17 P08004supporting
confidence: 59%
“…In pixelated CdZnTe detectors, charge sharing causes charge loss for events occurring in the gap between pixels, and is one of the factors that degrades the performance of the detector. The presence of a steering grid, surrounding the anode pixel and biased to a slightly negative voltage with respect to the grounded pixels, has shown to improve the performance of CdZnTe detectors [15,20]: when the steering grid is biased to a slightly negative voltage, electrons are forced to move towards the pixels when approaching the anode surface, reducing charge loss in the pixels gap. Typical values for the steering grid voltage are ∼ −50 V [15]: lower values do not lead to significant improvements in collection efficiency, while higher values result in an additional surface current and increased noise.…”
Section: B Steering Grid Measurementsmentioning
confidence: 99%
“…The presence of a steering electrode has shown to improve the charge collection efficiency of CdZnTe detectors, as reported, e.g., in Ref. 13. When the steering grid is biased to a slightly negative voltage with respect to the grounded pixels (around −50 V), electrons are forced to move towards the pixels when approaching the anode surface, reducing charge loss in the pixels gap.…”
Section: Introductionmentioning
confidence: 66%
“…In pixelated CdZnTe detectors, charge sharing causes charge loss for events occurring in the gap between pixels, and is one of the factors that degrades the performance of the detector. The presence of a steering grid, surrounding the anode pixel and biased to a slightly negative voltage with respect to the grounded pixels, has shown to improve the performance of CdZnTe detectors [13,17]: when the steering grid is biased to a slightly negative voltage, electrons are forced to move towards the pixels when approaching the anode surface, reducing charge loss in the pixels gap. The performance degradation due to charge sharing effect, may vary according to several factors of the considered device, such as pixel size, width of the gap between pixels, size of the steering grid, as well as shaping performance and noise of the read-out electronics.…”
Section: B Steering Grid Measurementsmentioning
confidence: 99%
“…The interested reader may consult (Iniewski et al, 2007;Rana et al, 2009;Kitaguchi et al, 2011;Yin et al, 2011Yin et al, , 2013Yin et al, , 2014Veale et al, 2014;Montémont et al, 2014;Ocampo Giraldo et al, 2018;Khalil et al, 2018) for discussions of charge sharing in CZT detectors, and (Zhang et al, 2004;Benoit and Hamel, 2009;De Geronimo et al, 2008;Kim et al, 2011;Zhang et al, 2012;Beilicke et al, 2013;Yin et al, 2014;Kim et al, 2014;Wahl et al, 2015;Chen et al, 2018) for discussion of CZT detectors of different thicknesses and pixel sizes.…”
Section: Discussionmentioning
confidence: 99%