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- The Charged Particle Measurement Experiment (CPME) was designed and built at
JHU/APL. The original Principal Investigator was S. M. Krimigis. The current
Principal Investigator is R. B. Decker ( robert.decker@jhuapl.edu). The CPME on
IMP-8 have operated successfully for 28 years and have generated a wealth of
high-quality data that have led to new discoveries and have resulted in
hundreds of publications. Both the CPME and EPE instruments continued to
perform without problems until IMP-8 operations were terminated by NASA at the
end of October 2001.
The CPME consists of a number of detector assemblies. A description of the CPME
can be found in the published paper by Sarris et al. [J. Geophys. Res., 81,
2341, 1976]. A detailed account of various instrumental characteristics (energy
passbands, flux conversion factors, data formats, etc.) can be found in the
unpublished CPME handbook by Armstrong [1976].
Most of the detectors have their fields of view centered in the ecliptic plane,
so that fairly comprehensive angular distributions in this plane can be
obtained for several species, as indicated in column seven of the CMPE PET
Table, by using the spin of the spacecraft. Orientations of the 8, 45-degree
(full-angle) sectors of the CPME on IMP-8 are illustrated in CPME sector look
directions.
For more information, see:
http://sd-www.jhuapl.edu/IMP/imp_index.html
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