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Instrument: EPAM : Electron, Proton, and Alpha Monitor |
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Associated Platforms ACE Related Data Sets View all records related to this instrument Description The Electron, Proton, and Alpha Monitor (EPAM) on the Advanced Composition Explorer (ACE) is composed of five telescope apertures of three different types. Two Low Energy Foil Spectrometers (LEFS) measure the flux and direction of electrons above 30 keV (geometry factor = 0.397 cm2 sr), two Low Energy Magnetic Spectrometers (LEMS) measure the flux and direction of ions greater than 50 keV (geometry factor = 0.48 cm2 sr), and the Composition Aperture (CA) measures the elemental composition of the ions (geometry factor = 0.24 cm2 sr). The telescopes use the spin of the spacecraft to sweep the full sky. Solid-state detectors are used to measure the energy and composition of the incoming particles. EPAM was designed and developed by ther Johns Hopkins Applied Physics Laboratory. See: http://sd-www.jhuapl.edu/ACE/EPAM/ Online Resources http://sd-www.jhuapl.edu/ACE/EPAM/ Instrument Logistics Data Rate: 0.16 kpbs Instrument Start Date: 1997-08-25 Instrument Owner: Johns Hopkins University, Applied Physics Lab |
