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Proceedings Paper

Inflight characterization and correction of Planck/HFI analog to digital converter nonlinearity
Author(s): A. Sauvé; F. Couchot; G. Patanchon; L. Montier
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Paper Abstract

The Planck Satellite launched in 2009 was targeted to observe the anisotropies of the Cosmic Microwave Back-ground (CMB) to an unprecedented sensitivity. While the Analog to Digital Converter of the HFI (High Frequency Instrument) readout electronics had not been properly characterized on ground, it has been shown to add a systematic nonlinearity effect up to 2% of the cosmological signal. This was a limiting factor for CMB science at large angular scale. We will present the in-flight analysis and method used to characterize and correct this effect down to 0.05% level. We also discuss how to avoid this kind of complex issue for future missions.

Paper Details

Date Published: 19 July 2016
PDF: 17 pages
Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99143E (19 July 2016); doi: 10.1117/12.2232671
Show Author Affiliations
A. Sauvé, Institut de Recherche en Astrophysique et Planétologie, CNRS (France)
F. Couchot, Laboratoire de l'Accélerateur Linéaire, Univ. Paris 11, CNRS (France)
G. Patanchon, AstroParticule et Cosmologie, Univ. Paris Diderot, CNRS (France)
CEA, Observatoire de Paris (France)
L. Montier, Institut de Recherche en Astrophysique et Planétologie (France)


Published in SPIE Proceedings Vol. 9914:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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