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6 July 2018 Detector chain calibration strategy for the Euclid flight IR H2RGs
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Euclid is an ESA mission to map the geometry of the Dark Universe with a planned launch date in 2021.1 Two primary cosmological probes, weak gravitational lensing and baryonic acoustic oscillations, are implemented through a VISible imager (VIS) and a Near-Infrared Spectrometer and Photometer (NISP).2 The ground characterization of the NISP Flight Sensor Chip Systems (SCS) followed by the pixel response calibration aims to produce all informations to correct and control the accuracy of the signal. This work reports on the ground characterization of the NISP detector chain. The detector and electrical effects are likely to generate statistical fluctuations and systematic errors on the final flux measurement. The analysis strategies to maintain the pixel relative response accuracy within 1% is proposed in this work. The Euclid NISP test ow is presented and the main concerns of the detector chain calibration, such as non-linearity, charge trapping and de-trapping are discussed on the basis of the analysis of the flight detectors characterization data.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Barbier, C. Buton, J.-C. Clemens, L. Conversi, A. Ealet, S. Ferriol, F. Fornari, W. Gillard, R. Kohley, B. Kubik, C. Rosset, A. Secroun, B. Serra, G. Smadja, and J. Zoubian "Detector chain calibration strategy for the Euclid flight IR H2RGs", Proc. SPIE 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII, 107090S (6 July 2018);

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