Speaker
Description
The 3D Energetic Electron Spectrometer (3DEES) has been developed as a science-class instrument that is optimized for the measurement of angle resolved electron spectra in the energy range 0.1 - 10 MeV in the Earth’s radiation belts. The demonstrator model of the instrument (measuring simultaneously from 6 directions) was launched on board PROBA-3 on 2024/12/05 into a highly elliptical orbit: 60 530 km apogee, 600 km perigee, 59° inclination, 19.7 hours orbital period. With these orbital parameters, the satellite is covering parts of the inner belt, outer belt and mostly the border of the magnetosphere. Thus, the primary objective of the 3DEES mission is to give an accurate picture of the high-energy electron population in the magnetosphere for scientific studies of their acceleration and loss processes, through measure of angle resolved energy spectra of electrons, which also constitute boundary conditions to advanced physics models. In addition the mission targets to deliver Space Weather data for now- and forecasting activities. The presentation will explain details on the 3DEES mission onboard PROBA-3 and present the first data measured by the instrument after the launch.
