Analyses of images of neutron interactions and single particle displacement damage in CCD arrays

Chugg, A.M.; Jones, R.; Moutrie, M.J.; Truscott, P.R.

doi:10.1109/tns.2004.839164

Cited by 19 publications

(9 citation statements)

References 10 publications

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“…Dark signal spikes are individual pixels which exhibit persistently elevated dark signal levels beyond the ordinary bounds of the noise distribution for dark signal in un-irradiated pixels. 13 Displacement damage can induce a remarkable increase in the number and amplitude of the dark signal spikes. Dark signal spike which has the highest dark signal value is caused by depositing large amounts of displacement energy within a pixel of an optoelectronic image sensor such as CCD and CMOS image sensor.…”

Section: Dark Signal Spike Increasementioning

confidence: 99%

“…11 An analysis of DSNU and dark signal spike in a CCD irradiated by 90 MeV neutrons is presented in 12 and single particle displacement damage in CCDs induced by high energy neutrons is presented in. 13 Neutron radiation effects on CCDs used in the SLD vertex detector are presented in. 14,15 Though a Author to whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of reactor neutron irradiation induced dark signals increase in COTS array CCDs

et al. 2014

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The experiments of reactor neutron irradiation which induce dark signal increase in COTS array CCDs are presented. The flux of the reactor neutron beams was about 1.33 × 108 n/cm2s. The three samples were exposed to 1MeV neutron-equivalent fluences of 1 × 1011, 5 × 1011, and 1 × 1012 n/cm2, respectively. The mean dark signal (KD), dark signal non-uniformity (DSNU), and dark signal spikes (hot pixels) versus neutron fluence are investigated. The degradation mechanisms of the dark signal in CCDs are analyzed. The mean dark signal increase due to neutron displacement damage appears to be proportional to displacement damage dose. The dark images from the CCDs irradiated by neutrons are presented to investigate the generation of dark signal spike. The 1D and 2D figures which show the output signal voltage of pixels in dark images irradiated by different neutron beam fluences, are presented to compare the degradation of KD, DSNU, and dark signal spike.

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Section: Dark Signal Spike Increasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of reactor neutron irradiation induced dark signals increase in COTS array CCDs

et al. 2014

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“…L 1 v 2 v 1 2 d 1 and L 2 are the distance from the space points to the centre of optical element. 1 θ , 2 θ are the included angles from the central axis of optical element to symmetric line which is requested. As shown in the Figure 1, the projection in the O 1 X 1 Y 1 Z 1 coordinate system of a point in the reference coordinate system is:…”

Section: Measurement Principlementioning

confidence: 99%

“…Binocular stereo vision has extensive applications in move robot, three-dimension measurement, object modeling [1,2]. This method simulates the vision system of human, setting certain distance and orientation to two same CCD cameras.…”

Section: Introductionmentioning

confidence: 99%

Research of Correspondence Points Matching on Binocular Stereo Vision Measurement System Based on Wavelet

Liu

Gao

Zhang

2006

2006 International Conference on Machine Learning and Cybernetics

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A method is presented to solve correspondence points matching on binocular stereo vision measurement system. It is based on that the multi-scale zero-crossings of wavelet transform can obtain the locations of the signal sharp variation points at scales for a particular class of wavelets. After studying the physical model of binocular stereo vision measurement system, a coarse to fine matching algorithm is applied to solve the problem of correspondence points matching. First we match the bigger scale zero-crossings, compute the disparity and then match the smaller scale zerocrossings under the restriction of disparity using the distance information. Thus the complexity of correspondence points matching is decreased and the matching mistake is reduced. The thickness of cement clinker in the cooler is measured using this method. The experiment result indicates that the distributing status of cement clinker thickness can be calculated accurately. Error measured in this method is lower than that measured in the old method.

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“…The flat-band voltage shifts, the dark signal, the dark signal spike, and the CTI have been studied on a two phase CCD used as vertex detector subjected to irradiation with fluences reaching 8.9 Â 10 9 n/cm 2 [9]. The interactions of high energy neutrons with CCDs and single particle displacement damage in the CCDs have been presented in [10,11].…”

Section: Introductionmentioning

confidence: 99%

Displacement damage induce degradation of COTS array CCDs irradiated by neutron beams from a nuclear reactor

Wang

Chen

Zhang

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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Analyses of images of neutron interactions and single particle displacement damage in CCD arrays

Cited by 19 publications

References 10 publications

Investigation of reactor neutron irradiation induced dark signals increase in COTS array CCDs

Investigation of reactor neutron irradiation induced dark signals increase in COTS array CCDs

Research of Correspondence Points Matching on Binocular Stereo Vision Measurement System Based on Wavelet

Displacement damage induce degradation of COTS array CCDs irradiated by neutron beams from a nuclear reactor

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