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ACE/EPAM
STATUS
PI Instrument And Archive
AVAILABILITY
since 1997
REQUEST PROCEDURE
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Solar Instruments
The Advanced Composition Explorer (ACE) Electron, Proton and Alpha Monitor 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.
CONTACT
Robert Gold
Johns Hopkins University Applied Physics Laboratory
11100 Johns Hopkins Road Laurel, MD 20723
240-228-5000
robert.gold@jhuapl.edu
SPECIFICATIONS
Spectral Range
Spectral Resolution
Spatial Coverage and Resolution
Temporal Resolution12 s
Data Accuracy
Data Precision
Physical Observables
Derived Outputs
Concurrence Opportunities
Expected Lifetime
Location or OrbitSmall halo orbit at L1 libration point
Capability Summary
Scheduling
Archival Data
Number of Users
Planned Upgrades
Sub-Instruments
Data Products
University FacilityNo
National Ground BasedNo
SatelliteYes
Virtual ArchiveNo
REFERENCES
The Advanced Composition Explorer Mission, Space Science Reviews, Vol 86, Nos. 1 – 4, 1998
UPDATED ON
3 Sep 2009 13:47