27 July 2016 A 9 megapixel large-area back-thinned CMOS sensor with high sensitivity and high frame-rate for the TAOS II program
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Abstract
The Transneptunian Automated Occultation Survey (TAOS II) is a robotic telescope system using three telescopes in San Pedro Martir Observatory in Mexico. It measures occultation of background stars by small TransNeptunian Objects (TNO) in order to determine their size distribution. Each telescope focal plane uses ten buttable backthinned CMOS sensors. Key performance features of the sensors are: Large array format 4608 x 1920, Pixel size 16μm, Multi ROIs, 8 analogue video channels, Frame rate of 20-40 fps [using ROIs], Low noise <3e-, Cryogenic dark current <0.1e-/pixel/s, backthinned for >90% peak quantum efficiency. The paper describes top level application requirements for the TAOS II detector. The sensor design including the pixel and buttable package are described together with performance at room temperature and cryogenic temperature of backthinned devices. The key performance specifications have been demonstrated and will be presented. The production set of 40 devices are due for completion within 2017.
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Jérôme Pratlong, Jérôme Pratlong, Shiang-Yu Wang, Shiang-Yu Wang, Matthew Lehner, Matthew Lehner, Paul Jorden, Paul Jorden, Paul Jerram, Paul Jerram, Steven Johnson, Steven Johnson, "A 9 megapixel large-area back-thinned CMOS sensor with high sensitivity and high frame-rate for the TAOS II program", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 991514 (27 July 2016); doi: 10.1117/12.2233034; https://doi.org/10.1117/12.2233034
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