WFC3 Detector CharacterizationReport # 3: CCD44 Radiation Test Results Ð CCD44V1

Physics

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Hubble Space Telescope, Hst, Space Telescope Science Institute, Wide Field Camera 3, Wfc3

Scientific paper

We report the results from charge transfer efficiency (CTE) measurements of a Marconi CCD.The device is a model CCD44, similar to the WFC3 flight device, a CCD43. The device is coatedto improve V response. We present the results after the device has been exposed to one and twoand a half year's equivalent on-orbit radiation. CTE is measured with three techniques: 55Fe,Extended Pixel Edge Response (EPER) and First Pixel Response (FPR) (post-rad only). Theresults of these tests were consistent with CTE values seen on a previous CCD44 device,CCD44UV1. All data were collected at the Detector Characterization Lab (DCL) at GoddardSpace Flight Center. Visit http://dcl.gsfc.nasa.gov/ for more information.

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