The instrument paper for EPIC is
"Geotail Energetic Particles and Ion Composition Instrument"
J. Geomag. Geoelectr., 46, 39-57, 1994
To request a copy of the paper, send an email to: jon.vandegriff@jhuapl.edu
Abstract
The Energetic Particles and Ion Composition (EPIC) instrument, flown onboard the Geotail satellite, is designed to measure the characteristics
of particle populations important to understanding the make-up and dynamics of the Earth's geomagnetic tail. To do this, EPIC, a joint
endeavor between the Technical University of Braunschweig (TUB), the University of Maryland (UM), and the Johns Hopkins University
Applied Physics Laboratory (JHU/APL), is made up of five sub-assemblies: the Supra-Thermal Ion Composition Spectrometer (STICS) sensor,
the STICS analog electronics, the Ion Composition System (ICS) sensor, the ICS analog eletronics, and the Data Processing Unit (DPU).
The STICS sensor provides roughly 4-PI angular coverage, composition and spectral observations, with charge state determination for all
ions from 30 keV to 230 keV/e, and mass per charge measurements >= 7.5 keV/e. The ICS sensor provides flux, composition, spectra, and
angular distributions over two polar angles of the elemental species protons through iron from >= 50 keV up to 3MeV along with angular
distributions in one plane of electron fluxes >32 keV and >100 keV. The DPU provides the capability of numerous operating modes from
which a small number will be selected to optimize dta collection throughout the many phases of the Geotail mission. In this paper, we
describe the instrument, its operation, and show some of our early results.
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Maintainer: Jon D. Vandegriff
Last modified: Thu Jul 31 13:50:26 Eastern Daylight Time 2003