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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
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Volume 3, issue 1
Geosci. Instrum. Method. Data Syst., 3, 59–70, 2014
https://doi.org/10.5194/gi-3-59-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Calibration methods and results of the in-situ experiments...

Geosci. Instrum. Method. Data Syst., 3, 59–70, 2014
https://doi.org/10.5194/gi-3-59-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 05 May 2014

Research article | 05 May 2014

In-flight calibration of the Cluster PEACE sensors

N. Doss1, A. N. Fazakerley1, B. Mihaljčić1, A. D. Lahiff1,*, R. J. Wilson1,**, D. Kataria1, I. Rozum1,***, G. Watson1, and Y. Bogdanova1,* N. Doss et al.
  • 1Mullard Space Science Laboratory, University College London, Dorking, UK
  • *now at: Rutherford Appleton Laboratory, Oxford, UK
  • **now at: University of Colorado Boulder, Colorado, USA
  • ***now at: European Centre for Medium-Range Weather Forecasts, Reading, UK

Abstract. The Plasma Electron and Current Experiment (PEACE) instruments operate on all four of the Cluster spacecraft and measure the 3-D velocity distribution of electrons in the energy range from 0.59 eV to 26.4 keV during each spacecraft spin. Pitch angle distributions and moments of the velocity distribution are also produced. As the mission has progressed, the efficiency of the detectors has declined. Several factors may play a role in this decline such as exposure to radiation, high electron fluxes and spacecraft thruster firings. To account for these variations, continuous in-flight calibration work is essential. The purpose of this paper is to describe the PEACE calibration parameters, focussing in particular on those that vary over time, and to describe the methods which are used to determine their evolution.

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