Title :
In-Flight Measurements of Radiation Environment on Board the Argentinean Satellite SAC-D
Author :
Boscher, D. ; Cayton, T. ; Maget, V. ; Bourdarie, S. ; Lazaro, D. ; Baldran, T. ; Bourdoux, P. ; Lorfevre, E. ; Rolland, G. ; Ecoffet, R.
Author_Institution :
ONERA-The French Aerosp. Lab., Toulouse, France
Abstract :
Measurements of the ICARE-NG/CARMEN-1 (Influence sur les Composants Avancés des Radiations de l´Espace-Nouvelle Génération/CARactérisatin et Modélisation de l´Environnement spatial) detector on board the low Earth orbit Argentinean satellite SAC-D are presented. Particle fluxes are obtained for electrons from 250 keV up to 3.2 MeV and protons from 12.8 MeV up to 190 MeV since September 2011. As the detector was placed on a side of the satellite which is directed 45° from zenith, large anisotropy was observed in the measurements. Finally, making advantage of the 128 different channels, a singular value decomposition (SVD) method was used to reconstruct with a great precision the proton spectrum in the range 60-300 MeV, and extended it up to 600 MeV.
Keywords :
aerospace instrumentation; artificial satellites; particle detectors; silicon radiation detectors; singular value decomposition; Argentinean satellite SAC-D; ICARE-NG/CARMEN-1 detector; SVD method; anisotropy; electron volt energy 12.8 MeV to 190 MeV; electron volt energy 250 keV to 3.2 MeV; electron volt energy 60 MeV to 300 MeV; high energy particles measurement; in-flight measurement; low Earth orbit; particle flux; proton spectrum; radiation environment; singular value decomposition; Detectors; Extraterrestrial measurements; Low earth orbit satellites; Nucelar measurements; Orbits; Protons; Singular value decomposition; Anisotropy; high energy particles measurement; singular value decomposition (SVD); space environment;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2014.2365212
