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Proceedings Paper

A study of hot pixel annealing in the Hubble Space Telescope Wide Field Camera 3 CCDs
Author(s): Elizabeth J. Polidan; Augustyn Waczynski; Paul Marshall; Scott D. Johnson; Cheryl Marshall; Robert Reed; Randy A. Kimble; Gregory Delo; David Schlossberg; Anne Marie Russell; Terry Beck; Yiting Wen; John Yagelowich; Robert J. Hill
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Paper 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.

Paper Details

Date Published: 12 October 2004
PDF: 10 pages
Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.552111
Show Author Affiliations
Elizabeth J. Polidan, Global Science & Technology, NASA Goddard Space Flight Ctr. (United States)
Augustyn Waczynski, Global Science & Technology, NASA Goddard Space Flight Ctr. (United States)
Paul Marshall, NASA Consultant (United States)
Scott D. Johnson, Global Science & Technology, NASA Goddard Space Flight Ctr. (United States)
Cheryl Marshall, NASA Goddard Space Flight Ctr. (United States)
Robert Reed, NASA Goddard Space Flight Ctr. (United States)
Randy A. Kimble, NASA Goddard Space Flight Ctr. (United States)
Gregory Delo, Global Science & Technology, NASA Goddard Space Flight Ctr. (United States)
David Schlossberg, Sigma Space Corp., NASA Goddard Space Flight Ctr. (United States)
Anne Marie Russell, Global Science & Technology, NASA Goddard Space Flight Ctr. (United States)
Terry Beck, Sigma Space Corp., NASA Goddard Space Flight Ctr. (United States)
Yiting Wen, Global Science & Technology, NASA Goddard Space Flight Ctr. (United States)
John Yagelowich, NASA Goddard Space Flight Ctr. (United States)
Robert J. Hill, Science Systems and Applications Inc., NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 5487:
Optical, Infrared, and Millimeter Space Telescopes
John C. Mather, Editor(s)

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