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Proceedings Paper

Thermal models of the Planck/LFI QM/FM instruments
Author(s): Maurizio Tomasi; Giorgio Baldan; Marco Lapolla; Aniello Mennella; Gianluca Morgante; Luca Pagan; Luca Terenzi
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Paper Abstract

The ESA Planck mission is the third generation (after COBE and WMAP) space experiment dedicated to the measurement of the Cosmic Microwave Background (CMB) anisotropies. Two instruments will be integrated onboard: the High Frequency Instrument (HFI), an array of bolometers, and the Low Frequency Instrument (LFI), an array of pseudo-correlation HEMT radiometers. In this paper we will discuss the development of analytical and numerical models to estimate the thermal behavior of LFI, both in steady-state and transient conditions. We then describe their application to the qualification model (QM) tests. QM test data were also used to calibrate the numerical models. Finally, we show some examples about how these models can be used in predicting the instrument performances and the impact of thermal systematic effects on the scientific results.

Paper Details

Date Published: 28 June 2006
PDF: 10 pages
Proc. SPIE 6271, Modeling, Systems Engineering, and Project Management for Astronomy II, 62710X (28 June 2006); doi: 10.1117/12.671484
Show Author Affiliations
Maurizio Tomasi, Istituto Nazionale di Astrofisica (Italy)
Giorgio Baldan, Alcatel/Alenia Spazio (Italy)
Marco Lapolla, Alcatel/Alenia Spazio (Italy)
Aniello Mennella, Univ. degli Studi di Milano (Italy)
Gianluca Morgante, Istituto Nazionale di Astrofisica (Italy)
Luca Pagan, Alcatel/Alenia Spazio (Italy)
Luca Terenzi, Istituto Nazionale di Astrofisica (Italy)

Published in SPIE Proceedings Vol. 6271:
Modeling, Systems Engineering, and Project Management for Astronomy II
Martin J. Cullum; George Z. Angeli, Editor(s)

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