12 October 2004 A study of hot pixel annealing in the Hubble Space Telescope Wide Field Camera 3 CCDs
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Abstract
A Hubble Space Telescope Wide Field Camera 3 (WFC3) CCD detector was tested for radiation effects while operating at -83C. The goal of the experiment was to evaluate the introduction and annealing rates of hot pixels and to assess the dynamics of that process. The device was irradiated while cold and warmed to +30°C for a 4 hour soak, then cooled back down to -83°C. Hot pixel populations were tracked during warm up and cool down. The results showed that the hot pixels begin to anneal around -40°C and the anneal process was largely completed before the detector reached +30°C. It was also found that, although a large fraction of the hot pixels dropped below the threshold, they remained warmer than the remaining population.
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Elizabeth J. Polidan, Elizabeth J. Polidan, Augustyn Waczynski, Augustyn Waczynski, Paul Marshall, Paul Marshall, Scott D. Johnson, Scott D. Johnson, Cheryl Marshall, Cheryl Marshall, Robert Reed, Robert Reed, Randy A. Kimble, Randy A. Kimble, Gregory Delo, Gregory Delo, David Schlossberg, David Schlossberg, Anne Marie Russell, Anne Marie Russell, Terry Beck, Terry Beck, Yiting Wen, Yiting Wen, John Yagelowich, John Yagelowich, Robert J. Hill, Robert J. Hill, } "A study of hot pixel annealing in the Hubble Space Telescope Wide Field Camera 3 CCDs", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.552111; https://doi.org/10.1117/12.552111
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