R. Barbier,1 C. Buton,1 J.-C. Clemens,2 L. Conversi,3 A. Ealet,2 S. Ferriol,1 F. Fornari,4 W. Gillard,2 R. Kohley,3 B. Kubik,1 C. Rosset,5 A. Secrounhttps://orcid.org/0000-0003-0505-3710,2 B. Serra,2 G. Smadja,1 J. Zoubian2
1Lyon Univ., CNRS/IN2P3, IPNL (France) 2Aix-Marseille Univ., CNRS/IN2P3, CPPM (France) 3ESAC, ESA (Spain) 4Istituto Nazionale di Fisica Nucleare (Italy) 5Paris Diderot Univ., CNRS/IN2P3, APC (France)
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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.
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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, 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); https://doi.org/10.1117/12.2311966