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Titel In-flight calibration of the Hot Ion Analyser on board Cluster
VerfasserIn A. Blagau, I. Dandouras, A. Barthe, S. Brunato, G. Facskó, V. Constantinescu
Medientyp Artikel
Sprache Englisch
ISSN 2193-0856
Digitales Dokument URL
Erschienen In: Geoscientific Instrumentation, Methods and Data Systems ; 3, no. 1 ; Nr. 3, no. 1 (2014-04-23), S.49-58
Datensatznummer 250115212
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/gi-3-49-2014.pdf
 
Zusammenfassung
The Hot Ion Analyser (HIA), part of the Cluster Ion Spectrometry experiment, has the objective to measure the three-dimensional velocity distributions of ions. Due to a variety of factors (exposure to radiation, detector fatigue and aging, changes in the operating parameters, etc.), the particles' detection efficiency changes over time, prompting for continuous in-flight calibration. This is achieved by comparing the HIA data with the data provided by the WHISPER (Waves of HIgh frequency and Sounder for Probing of Electron density by Relaxation) experiment on magnetosheath intervals, for the high-sensitivity section of the instrument, or solar wind intervals, for the low-sensitivity section. The paper presents in detail the in-flight calibration methodology, reports on the work carried out for calibrating HIA and discusses plans to extend this activity in order to ensure the instrument's highest data accuracy.
 
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