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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 710671.0, MPI für Astronomie / Publikationen_mpia
Euclid near infrared spectrophotometer instrument concept and first test results at the end of phase B
Authors:Maciaszek, T.; Ealet, A.; Jahnke, K.; Prieto, E.; Barbier, R.; Mellier, Y.; Costille, A.; Ducret, F.; Fabron, C.; Gimenez, J.-L.; Grange, R.; Martin, L.; Rossin, C.; Pamplona, T.; Vola, P.; Clémens, J. C.; Smadja, G.; Amiaux, J.; Barrière, J. C.; Berthe, M.; De Rosa, A.; Franceschi, E.; Morgante, G.; Trifoglio, M.; Valenziano, L.; Bonoli, C.; Bortoletto, F.; D'Alessandro, M.; Corcione, L.; Ligori, S.; Garilli, B.; Riva, M.; Grupp, F.; Vogel, C.; Hormuth, F.; Seidel, G.; Wachter, S.; Diaz, J. J.; Grañena, F.; Padilla, C.; Toledo, R.; Lilje, P. B.; Solheim, B. G. B.; Toulouse-Aastrup, C.; Andersen, M.; Holmes, W.; Israelsson, U.; Seiffert, M.; Weber, C.; Waczynski, A.; Laureijs, R. J.; Racca, G.; Salvignol, J.-C.; Strada, P.
Date of Publication (YYYY-MM-DD):2014
Audience:Not Specified
Abstract / Description:The Euclid mission objective is to understand why the expansion of the Universe is accelerating by mapping the geometry of the dark Universe by investigating the distance-redshift relationship and tracing the evolution of cosmic structures. The Euclid project is part of ESA's Cosmic Vision program with its launch planned for 2020. The NISP (Near Infrared Spectro-Photometer) is one of the two Euclid instruments and is operating in the near-IR spectral region (0.9-2mum) as a photometer and spectrometer. The instrument is composed of: - a cold (135K) optomechanical subsystem consisting of a SiC structure, an optical assembly (corrector and camera lens), a filter wheel mechanism, a grism wheel mechanism, a calibration unit and a thermal control system - a detection subsystem based on a mosaic of 16 Teledyne HAWAII2RG cooled to 95K with their front-end readout electronic cooled to 140K, integrated on a mechanical focal plane structure made with Molybdenum and Aluminum. The detection subsystem is mounted on the optomechanical subsystem structure - a warm electronic subsystem (280K) composed of a data processing / detector control unit and of an instrument control unit that interfaces with the spacecraft via a 1553 bus for command and control and via Spacewire links for science data This presentation describes the architecture of the instrument at the end of the phase B (Preliminary Design Review), the expected performance, the technological key challenges and preliminary test results obtained on a detection system demonstration model.
External Publication Status:published
Document Type:Other
Communicated by:N. N.
Affiliations:MPI für Astronomie
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