Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2004 · 21 citations · 0 references
EngineeringAstronomyRadiation DetectionRadiation MeasurementRadiation PhysicsDetector TechnologyHigh-dose Radiation EffectsPhotodetectorsRadiation DetectorsBuried Channel DevicesDetector DesignOperational ConditionsRadiation DamageRadiation Damage EffectsRadiation Damage Effects On DetectorsRadiation Damage In DetectorsRadiation Effects
A Hubble Space Telescope Wide Field Camera 3 (WFC3) CCD detector was tested for radiation effects while operating at -83°C. The detector has a format of 2048 x 2048 pixels with a 15 μm square pixel size, a supplemental buried channel, an MPP implant, and is back side illuminated. Detector response was tested for total radiation fluences ranging from 1x10<sup>3</sup> to 2.5x10<sup>9</sup> of 63.3 MeV protons/cm<sup>2</sup> and for a range of beam intensities. Radiation damage was investigated and the annealing of damage was tested by warming up to +30°C. The introduction rate of hot pixels and their statistics, hot pixel annealing as a function of temperature and time, and radiation changes to the mean value of dark current were investigated. Results are compared with the experiences of other HST instruments.