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The Galileo Energetic Particles DetectorAmongst its complement of particles and fields instruments, the Galileo spacecraft carries an Energetic Particles Detector (EPD) designed to measure the characteristics of particle populations important in determining the size, shape, and dynamics of the Jovian magnetosphere. To do this the EPD provides 4pi angular coverage and spectral measurements for Z greater than or equal to 1 ions from 20 keV to 55 MeV, for electrons from 15 keV to greater than 11 MeV, and for the elemental species helium through iron from approximately 10 keV/nucl to 15 MeV/nucl. Two bidirectional telescopes, mounted on a stepping platform, employ magnetic deflection, energy loss versus energy, and time-of-flight techniques to provide 64 rate channels and pulse height analysis of priority selected events. The EPD data system provides a large number of possible operational modes from which a small number will be selected to optimize data collection during the many encounter and cruise phases of the mission. The EPD employs a number of safeing algorithms that are to be used in the event that its self-checking procedures indicate a problem. The instrument and its operation are described.
Document ID
19920061970
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Williams, D. J.
(NASA Headquarters Washington, DC United States)
Mcentire, R. W.
(NASA Headquarters Washington, DC United States)
Jaskulek, S.
(Johns Hopkins University Laurel, MD, United States)
Wilken, B.
(Max-Planck-Institut fuer Aeronomie Katlenburg-Lindau, Federal Republic of Germany, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Space Science Reviews
Volume: 60
Issue: 4-Jan
ISSN: 0038-6308
Subject Category
Spacecraft Instrumentation
Accession Number
92A44594
Funding Number(s)
CONTRACT_GRANT: N00039-89-C-0001
Distribution Limits
Public
Copyright
Other

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