CoRoT Satellite: Analysis of the In-Orbit CCD Dark Current Degradation
IEEE Transactions on Nuclear Science(2010)
摘要
This paper presents the analysis of the CoRoT CCDs dark current degradation measured during more than 2.5 years in orbit. Starting from on-ground irradiation results obtained during the space qualification of the detectors, a model is proposed to calculate the in-orbit pixel dark current distribution (including the hot pixels one). The modeling results are found to be in good agreement with the in-flight data. We therefore use this model to extrapolate the evolution of the dark signal distribution beyond 2.5 years. This is of primary interest in the context of a mission duration extension to 6 years proposed for the CoRoT mission.
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关键词
artificial satellites,charge-coupled devices,CoRoT satellite,dark signal distribution,in-orbit CCD dark current degradation,on-ground irradiation,CCD,CoRoT,DSNU,dark current,hot pixels
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