Particle Detectors
Physically part of the 3DA instrument, The Energetic Particle Instrument (EPI) on EQUATOR-S consists of an array of solid-state telescopes measuring electrons and ions in the energy range 20 - 226 keV and 20 - 400 keV, respectively, in 6 energy channels and 4 angle channels at a time. During each spacecraft spin the telescopes trace out a large fraction (70%) of the solid-angle sphere. See: http://www.mpe-garching.mpg.de/EQS/eq-s-instruments.html
EPI