CARMEN1 and CARMEN2 Experiment: Comparison between In-Flight Measured SEE Rates and Predictions

CARMEN is a CNES scientific equipment able to measure electron and proton fluxes and to detect radiation effects on electronic devices. SEU rates for two SSRAM devices on board the CARMEN1 and CARMEN2 experiments are investigated. SEU induced by trapped protons are studied for CARMEN2 whereas the impact of the March 2012 solar flare is studied for CARMEN1. SEU rates are estimated using two different approaches: a standard methodology (environment models, isotropic 3mm Aluminium shielding and extrapolated proton data) and the most accurate input data available (flux measurement, real shielding provided by the spacecraft and experimental proton data). These results are compared to in-flight SEU rate measurements.