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The calibration of the Cassini-Huygens CAPS Electron Spectrometer
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2010 (English)In: Planetary and Space Science, ISSN 0032-0633, E-ISSN 1873-5088, Vol. 58, no 3, 427-436 p.Article in journal (Refereed) Published
Abstract [en]

We present the two-stage method used to calibrate the electron spectrometer (ELS), part of the plasma spectrometer (CAPS) on board the Cassini spacecraft currently in orbit around Saturn. The CAPS-ELS is a top-hat electrostatic analyser designed to measure electron fluxes between 0 5 eV and 26 keV The on-ground calibration method described here includes the production of photoelectrons, which are energised and passed into the CAPS-ELS in a purpose designed calibration facility. Knowledge of the intensity of these incident electrons and the subsequent instrument output provides an on-ground calibrated geometric factor. Comparative studies of physical quantities such as plasma density and electron differential flux calculated using on-ground calibration factor with the quantities deduced from the wave experiment and high energy electron detector provide in-flight calibration. The results of this are presented together with a comparison of the experimentally calibrated values with simulated calibration values.

Place, publisher, year, edition, pages
2010. Vol. 58, no 3, 427-436 p.
Keyword [en]
Cassini, Electron, Spectrometer, Calibration
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-147697DOI: 10.1016/j.pss.2009.11.008ISI: 000275041000008OAI: oai:DiVA.org:uu-147697DiVA: diva2:400776
Available from: 2011-02-28 Created: 2011-02-28 Last updated: 2011-02-28Bibliographically approved

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Swedish Institute of Space Physics, Uppsala Division
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