2.2.6 spase://SMWG/Instrument/MMS/2/EnergeticParticleDetector/EIS MMS 2 Energetic Particle Detector (EPD) Suite, Energetic Ion Spectrometer (EIS) Instrument MMS 2 EPD Suite, EIS 2021-07-20T13:41:27Z Energetic Ion Spectrometer (EIS): EIS uses a time-of-flight/pulse-height sensor to provide ion composition measurements (protons vs. oxygen ions) and angular distributions over the energy range ~45 keV to 500 keV and with a temporal resolution of 30 s. EIS development is led by Co-I B. H. Mauk (Applied Physics Laboratory), who also heads the Energetic Particle investigation as a whole. spase://SMWG/Person/James.L.Burch PrincipalInvestigator spase://SMWG/Person/Barry.H.Mauk CoInvestigator Mission instrument web page https://www.nasa.gov/mission_pages/mms/spacecraft/mms-instruments.html Mission web page that describes the payload (instruments) on each spacecraft. English EnergeticParticleInstrument MMS 2 EPD Suite, Energetic Ion Spectrometer 2015-03-13T02:44:00 spase://SMWG/Observatory/MMS/2