Benchmarking trapped proton specification models along an EOR orbit - DPHY ONERA
Article Dans Une Revue IEEE Transactions on Nuclear Science Année : 2024

Benchmarking trapped proton specification models along an EOR orbit

Résumé

Eutelsat 7C (E7C), a telecommunication spacecraft, was launched on 21 st of June 2019 and reached geostationary (GEO) orbit four months later after a quasi-equatorial electric orbit raising (EOR) phase. An ICARE-NG (Influence sur les Composant Avancés des Radiations de l’Espace, Nouvelle Génération) radiation monitor was implemented on the spacecraft allowing measurements of electron and proton flux as well as Single Event Upset (SEU) effect affecting various static random access memories (SRAMs) and dynamic random access memories (DRAMs). According to the cruise to GEO profile, two phases could be deduced, a first one where SEU events are dominated by trapped protons and a second one where they are attributed to cosmic rays and solar proton events. In this paper, SEU events attributed to trapped particles as well as proton flux recorded by ICARE-NG are used to benchmark proton specification models, Aerospace Proton version 8 (AP8), Aerospace Proton version 9 (AP9) and Global Radiation Earth ENvironment-proton (GREEN-p). Although, the 3D shielding of the spacecraft and payload is considered to transport accurately the proton environment down to the chip, ground tests to define cross section were not reliable enough to draw clear conclusion on specification model performances along EOR orbits.
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vendredi 11 octobre 2024
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Dates et versions

hal-04664545 , version 1 (16-09-2024)

Identifiants

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Sébastien Bourdarie, Pablo Caron, Marine Ruffenach, Francoise Bezerra, Robert Ecoffet. Benchmarking trapped proton specification models along an EOR orbit. IEEE Transactions on Nuclear Science, 2024, 71 (8), pp.1631 - 1637. ⟨10.1109/TNS.2024.3383489⟩. ⟨hal-04664545⟩

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