The ISEE 1 and 2 Medium Energy Particles Experiment

Author

Williams, D.J. ; Keppler, E. ; Fritz, T.A. ; Wilken, B. ; Wibberenz, G.

Author_Institution

NOAA Space Environment Laboratory, Boulder, CO.

Volume

16

Issue

3

fYear

1978

fDate

7/1/1978 12:00:00 AM

Firstpage

270

Lastpage

280

Abstract

We describe the medium energy particles experiment (MEPE) on-board ISEE 1 and 2. The MEPE consists of the WIM instrument on ISEE 1 and the KED instrument on ISEE 2. Both instruments employ solid-state detectors and magnetic analysis to measure the angular, energy, and intensity distributions of protons (ions) above 24 keV and electrons above 20 keV. The WIM instrument also includes a composition measurement employing Â¿E by E and time-of-flight techniques. Three-parameter analysis is performed above 250 keV/nucleon, and single parameter analysis is performed above 125 keV/nucleon for helium through oxygen. Three-dimensional angular distributions are obtained through the use of a scan platform in the WIM instrument and multiple detector heads in the KED instrument. A variety of operational modes are used to optimize data collection from both instruments. Resolutions up to 128 channels in energy, 192 samples over the unit sphere in angle, and 0.095 s in time are available.

Keywords

Detectors; Electrons; Energy measurement; Helium; Instruments; Magnetic analysis; Magnetic heads; Performance analysis; Protons; Solid state circuits;

fLanguage

English

Journal_Title

Geoscience Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9413

Type

jour

DOI

10.1109/TGE.1978.294561

Filename

4071932