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APL is the central processing and analysis facility for the Electron, Proton, and Alpha Monitor (EPAM) particle instrument, one of six sensors and three instruments in the Advanced Composition Explorer (ACE) mission.
EPAM 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 cm^2 sr), two Low Energy Magnetic Spectrometers (LEMS) measure the flux and direction of ions greater than 50 keV (geometry factor = 0.48 cm^2 sr), and the Composition Aperture (CA) measures the elemental composition of the ions (geometry factor = 0.24 cm^2 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.
ACE Project -
Instrument summaries and other ACE material @ GSFC |
Investigator: Dr. R. Gold - the JHU Applied Physics Laboratory | ||
ACE Fact Sheet @ JHU/APL |
Dr. D. Haggerty - The JHU Applied Physics Laboratory dennis.haggerty@jhuapl.edu |
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ACE Instrument Development and Science Center @ Caltech | |||
ACE
Instruments:
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ACE Mission Operations Center @ GSFC | |||
The JHU/APL Space Department | |||
The JHU/APL EPAM data page | |||
EPAM bibliography |
Last Updated on Sep 21, 2011 |