Detailed characterisation of a new large area CCD manufactured on high resistivity silicon

Robbins, Mark S.; Mistry, Pritesh; Jorden, Paul

doi:10.1117/12.876627

Cited by 9 publications

(19 citation statements)

References 2 publications

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“…Flat-field data was captured for 8 of the 16 total channels, each consisting of 5 bias frames and 40 pairs of illuminated frames up to an integration time of 5 s. The backside bias of the CCD was set to V B = −60V, and in future it would be of interest to study the effect of changing bias voltages (the backside bias used significantly alters readout conditions, including the capacitance of the sense node 12 ). Using the raw sample data, we can then post facto reconstruct a Photon Transfer Curve (PTC) for a set of CDS timing parameters in software using exactly the same underlying readout data.…”

Section: Methodsmentioning

confidence: 99%

Automatic selection of correlated double sampling timing parameters

Weatherill

Shipsey

Arndt

et al. 2019

J. Astron. Telesc. Instrum. Syst.

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CDS is a process used in many Charge Coupled Device (CCD) readout systems to cancel the reset noise component that would otherwise dominate. CDS processing typically consists of subtracting the integrated video signal during a "signal" period from that during a "reset" period. The response of this processing depends therefore on the shape of the video signal with respect to the integration bounds. In particular, the amount of noise appearing in the final image and the linearity of the pixel value with signal charge are affected by the choice of the CDS timing intervals.In this paper, we use a digital CDS readout system which highly oversamples the video signal (as compared with the pixel rate) to reconstruct pixel values for different CDS timings using identical raw video signal data. We use this technique to develop insights into optimal strategy for selecting CDS timings both in the digital case (where the raw video signal may be available), and in the general case where it is not.In particular, we show that the linearity of the CDS operation allows subtraction of the raw video signals of pixels in bias images from those in illuminated images to directly show the effects of CDS processing on the final (subtracted) pixel values.

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Section: Methodsmentioning

confidence: 99%

Automatic selection of correlated double sampling timing parameters

Weatherill

Shipsey

Arndt

et al. 2019

J. Astron. Telesc. Instrum. Syst.

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“…However, the devices could cover a range of thicknesses, depending on the required sensitivity. For example, the bottom device could be a HiRho device [3] with a depletion depth of 70 to 200 μm. However, the use of thick devices will have implications for the achievable spatial resolution, especially when fast optics are employed.…”

Section: Detector Structurementioning

confidence: 99%

A novel SAL detector giving enhanced spatial and temporal resolution

Robbins

Weatherup

2011

SPIE Proceedings

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A novel charge coupled device (CCD) array enables the combination of imaging and semi-active laser (SAL) target designation to enhance seeker functionality at reduced inventory cost with lower collateral damage risk. The integration of SAL detection with imaging requires a high level of spatial and temporal resolution of the laser pulse detector and its correlation with the field of view of the imaging sensor so that laser spot location and code are presented with the image in real time. This evaluation of a novel SAL CCD detector concept shows that it is possible to achieve a temporal resolution in the region of 5 sec, an order of magnitude better than the basic requirement, and to achieve sensitivity to the laser pulse that allows operation in direct sunlight. The analysis indicates that the SAL CCD meets requirements using standard CCD processes. This paper reviews the detector architecture options and shows how the temporal, spatial and sensitivity requirements can be met.

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“…A similar approach has been used by many previous authors, e.g. [12]. The histograms shown are "raw", in the sense that they use 1 bin per DN value in the original image.…”

Section: Fe-55 Calibrationmentioning

confidence: 99%

An electro-optical test system for optimising operating conditions of CCD sensors for LSST

et al. 2017

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A: We describe the commissioning of a system which has been built to investigate optimal operation of CCDs for the LSST telescope. The test system is designed for low vibration, high stability operation and is capable of illuminating a detector in flat-field, projected spot, projected pattern and Fe-55 configurations. We compare and describe some considerations when choosing a gain calibration method for CCDs which exhibit the brighter-fatter effect. An optimisation study on a prototype device of gain and full well with varying back substrate bias and gate clock levels is presented.

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Detailed characterisation of a new large area CCD manufactured on high resistivity silicon

Cited by 9 publications

References 2 publications

Automatic selection of correlated double sampling timing parameters

Automatic selection of correlated double sampling timing parameters

A novel SAL detector giving enhanced spatial and temporal resolution

An electro-optical test system for optimising operating conditions of CCD sensors for LSST

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