In this paper we discuss the Planck-LFI in-flight calibration campaign. After a brief overview of the ground test campaigns, we describe in detail the calibration and performance verification (CPV) phase, carried out in space during and just after the cool-down of LFI. We discuss in detail the functionality verification, the tuning of the front-end and warm electronics, the preliminary performance assessment and the thermal susceptibility tests. The logic, sequence, goals and results of the in-flight tests are discussed. All the calibration activities were successfully carried out and the instrument response was comparable to the one observed on ground. For some channels the in-flight tuning activity allowed us to improve significantly the noise performance.
In-flight calibration and verification of the Planck-LFI instrument / A. Gregorio, F. Cuttaia, A. Mennella, M. Bersanelli, M. Maris, P. Meinhold, M. Sandri, L. Terenzi, M. Tomasi, F. Villa, M. Frailis, G. Morgante, D. Pearson, A. Zacchei, P. Battaglia, R.C. Butler, R. Davis, C. Franceschet, E. Franceschi, S. Galeotta, R. Leonardi, S. Lowe, N. Mandolesi, F. Melot, L. Mendes, P. Stassi, L. Stringhetti, D. Tavagnacco, A. Zonca, A. Wilkinson, P. Wilson, M. Charra, T. Maciaszek, S. Foley, C.J. Watson, M. Casale, R. Laureijs, J. Tauber, D. Texier, M. Baker, L.P. Cuevas, M. Krassenburg, P. Rihet. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 8:7(2013 Jul), pp. T07001.1-T07001.101. [10.1088/1748-0221/8/07/T07001]
In-flight calibration and verification of the Planck-LFI instrument
A. Mennella;M. Bersanelli;M. Tomasi;P. Battaglia;C. Franceschet;A. Zonca;
2013
Abstract
In this paper we discuss the Planck-LFI in-flight calibration campaign. After a brief overview of the ground test campaigns, we describe in detail the calibration and performance verification (CPV) phase, carried out in space during and just after the cool-down of LFI. We discuss in detail the functionality verification, the tuning of the front-end and warm electronics, the preliminary performance assessment and the thermal susceptibility tests. The logic, sequence, goals and results of the in-flight tests are discussed. All the calibration activities were successfully carried out and the instrument response was comparable to the one observed on ground. For some channels the in-flight tuning activity allowed us to improve significantly the noise performance.
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