Internal Charging Analysis of a Space Instrument in PEO With a Dedicated Modeling Chain

An internal charging (IC) analysis of the active measurement box of electrostatic risk (AMBER) instrument onboard Jason-3 in polar earth orbit (PEO) has been performed with a new dedicated modeling chain. The ExtendeD Gdml Editor (EDGE) application is in charge of the definition of the computer-aided design (CAD) model. The Modelling Of Radiation (MoORa) front end helps to configure, control, and postprocess the ESA/GRAS Monte Carlo simulation based on Geant4 to model the transport of space radiation environment. Finally, using the radiation results, the IC analysis, including internal electric fields and risk of discharge, is performed with the Spacecraft Plasma Interaction Software (SPIS)-IC 3-D time-dependent simulation code.