ELFIN will be flying two energetic particle detectors (EPDs). It has one EPD for ions (EPD-I) and one for electrons (EPD-E). The EPD-E is designed to handle energy in the ranges of 50keV to 4.5MeV while the EPD-I is designed for 50 to 300keV.
Both of these sensors are designed to have a field of view narrower than the loss cone. As a result, ELFIN will be the first mission to provide pitch-angle resolved, high-energy measurements of relativistic electron fluxes from within the loss cone. No other mission has taken this particular view of the radiation belts and this puts ELFIN in a position to deliver unique science to the community.
Both the EPD-E and the EPD-I are being developed in-house at UCLA by staff working in the Institute for Geophysics and Planetary Physics (IGPP) as well as the Earth, Planetary, and Space Sciences (EPSS) department.
Additionally, UCLA produced similar versions of these instruments that are currently in orbit on Moscow State University’s Lomonosov satellite. The instrument package provided by UCLA is nearly identical to the one that will ultimately fly on the ELFIN CubeSat. The instruments have been delivered and are awaiting launch with the Lomonosov satellite.
More information about this collaboration is available at the ELFIN-Lomonsosov website.