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.
|Titolo:||In-flight calibration and verification of the Planck-LFI instrument|
|Parole Chiave:||instrument optimisation ; instruments for CMB observations ; microwave radiometers ; space instrumentation|
|Settore Scientifico Disciplinare:||Settore FIS/05 - Astronomia e Astrofisica|
Settore FIS/01 - Fisica Sperimentale
|Data di pubblicazione:||lug-2013|
|Digital Object Identifier (DOI):||10.1088/1748-0221/8/07/T07001|
|Appare nelle tipologie:||01 - Articolo su periodico|