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12 August 2014 Electro-optical testing of fully depleted CCD image sensors for the Large Synoptic Survey Telescope camera
Peter E. Doherty, Pierre Antilogus, Pierre Astier, James Chiang, D. Kirk Gilmore, Augustin Guyonnet, Dajun Huang, Heather Kelly, Ivan Kotov, Petr Kubanek, Andrei Nomerotski, Paul O’Connor, Andrew Rasmussen, Vincent J. Riot, Christopher W. Stubbs, Peter Takacs, J. Anthony Tyson, Kurt Vetter
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Proceedings Volume 9154, High Energy, Optical, and Infrared Detectors for Astronomy VI; 915418 (2014) https://doi.org/10.1117/12.2056733
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada
Abstract
The LSST Camera science sensor array will incorporate 189 large format Charge Coupled Device (CCD) image sensors. Each CCD will include over 16 million pixels and will be divided into 16 equally sized segments and each segment will be read through a separate output amplifier. The science goals of the project require CCD sensors with state of the art performance in many aspects. The broad survey wavelength coverage requires fully depleted, 100 micrometer thick, high resistivity, bulk silicon as the imager substrate. Image quality requirements place strict limits on the image degradation that may be caused by sensor effects: optical, electronic, and mechanical. In this paper we discuss the design of the prototype sensors, the hardware and software that has been used to perform electro-optic testing of the sensors, and a selection of the results of the testing to date. The architectural features that lead to internal electrostatic fields, the various effects on charge collection and transport that are caused by them, including charge diffusion and redistribution, effects on delivered PSF, and potential impacts on delivered science data quality are addressed.
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Peter E. Doherty, Peter E. Doherty, Pierre Antilogus, Pierre Antilogus, Pierre Astier, Pierre Astier, James Chiang, James Chiang, D. Kirk Gilmore, D. Kirk Gilmore, Augustin Guyonnet, Augustin Guyonnet, Dajun Huang, Dajun Huang, Heather Kelly, Heather Kelly, Ivan Kotov, Ivan Kotov, Petr Kubanek, Petr Kubanek, Andrei Nomerotski, Andrei Nomerotski, Paul O’Connor, Paul O’Connor, Andrew Rasmussen, Andrew Rasmussen, Vincent J. Riot, Vincent J. Riot, Christopher W. Stubbs, Christopher W. Stubbs, Peter Takacs, Peter Takacs, J. Anthony Tyson, J. Anthony Tyson, Kurt Vetter, Kurt Vetter, } "Electro-optical testing of fully depleted CCD image sensors for the Large Synoptic Survey Telescope camera", Proc. SPIE 9154, High Energy, Optical, and Infrared Detectors for Astronomy VI, 915418 (12 August 2014); doi: 10.1117/12.2056733; https://doi.org/10.1117/12.2056733
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