Opening a Window of Discovery on the Dynamic Universe

Electro-optical testing of fully depleted CCD image sensors for the Large Synoptic Survey Telescope camera

Doherty, Peter et al.
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
Publication Date: 
Tuesday, August 12, 2014
SPIE Proceedings
Page #: 
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.
Bibtex reference: 
@INPROCEEDINGS{2014SPIE.9154E..18D, author = {{Doherty}, P.~E. and {Antilogus}, P. and {Astier}, P. and {Chiang}, J. and {Gilmore}, D.~K. and {Guyonnet}, A. and {Huang}, D. and {Kelly}, H. and {Kotov}, I. and {Kubanek}, P. and {Nomerotski}, A. and {O'Connor}, P. and {Rasmussen}, A. and {Riot}, V.~J. and {Stubbs}, C.~W. and {Takacs}, P. and {Tyson}, J.~A. and {Vetter}, K.}, title = "{Electro-optical testing of fully depleted CCD image sensors for the Large Synoptic Survey Telescope camera}", booktitle = {Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series}, year = 2014, series = {Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series}, volume = 9154, month = jul, eid = {915418}, pages = {915418}, doi = {10.1117/12.2056733}, adsurl = {}, adsnote = {Provided by the SAO/NASA Astrophysics Data System}

Financial support for LSST comes from the National Science Foundation (NSF) through Cooperative Agreement No. 1258333, the Department of Energy (DOE) Office of Science under Contract No. DE-AC02-76SF00515, and private funding raised by the LSST Corporation. The NSF-funded LSST Project Office for construction was established as an operating center under management of the Association of Universities for Research in Astronomy (AURA).  The DOE-funded effort to build the LSST camera is managed by the SLAC National Accelerator Laboratory (SLAC).
The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 to promote the progress of science. NSF supports basic research and people to create knowledge that transforms the future.
NSF and DOE will continue to support LSST in its Operations phase. They will also provide support for scientific research with LSST data.   

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