2.3.1 spase://CNES/Instrument/CDPP-AMDA/MAVEN/SEP SEP Solar Energetic Particle 2016-08-01T22:37:00Z The Solar Energetic Particle (SEP) instrument is part of the Particles and Fields Package and determines the impact of SEPs on the upper atmosphere. Goals: * Determine SEP input into the atmosphere as a function of altitude * Determine SEP heating, ionization, and sputtering of upper atmosphere * Detect the highest energy pickup ions (>30 to 100s of keV) Observations: * Characterize solar particles in an energy range that affects upper atmosphere and ionospheric processes (~120 – 200 km) * Time resolution adequate to capture major SEP events ( less 1 hour) Technical details and heritage: * Two dual double-ended telescopes * Four look directions per species, optimized for parallel and perpendicular Parker Spiral viewing * Protons and heavier ions from ~25 keV to 12 MeV * Electrons from ~25 keV to 1 MeV * Energy fluxes 10 to 106 eV/cm2-sec-ster-eV * Better than 50% energy resolution * Heritage from (nearly identical to) SST on THEMIS spase://SMWG/Person/Davin.Larson PrincipalInvestigator SEP web page, Summary sheet http://lasp.colorado.edu/home/maven/science/instrument-package/sep/ ParticleDetector 2013-11-18T13:28:00 Mars arrival : 2014-09-28T19:24:00 spase://CNES/Observatory/CDPP-AMDA/MAVEN