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 / Gregorio, Anna; 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; Tavagnacco, Daniele; 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., Perez Cuevas; M., Krassenburg; P., Rihet. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - ELETTRONICO. - 8:T07001(2013), pp. 1-100. [10.1088/1748-0221/8/07/T07001]
In-flight calibration and verification of the Planck-LFI instrument
GREGORIO, ANNA;TAVAGNACCO, DANIELE;
2013-01-01
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.Pubblicazioni consigliate
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