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Instrument: HI-SCALE : Heliosphere Instrument for Spectra, Composition, and Anisotropy and Low Energies |
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Associated Platforms ULYSSES Spectral/Frequency Information Wavelength Keyword: Gamma Ray Number Channels: 2 Spectral/Frequency Coverage/Range: 1 - 15 MeV Related Data Sets View all records related to this instrument Description The Heliosphere Instrument for Spectra, Composition, and Anisotropy at Low Energies (HI-SCALE) on Ulysses is designed to make measurements of interplanetary ions and electrons throughout the entire Ulysses mission. The ions (Ei > 50 keV) and electrons (Ee > 30 keV) are identified uniquely and detected by five separate solid-state detector telescopes that are oriented to give nearly complete pitch-angle coverage (i.e., coverage of essentially 4 pi ster) from the spinning spacecraft. Ion elemental abundances are determined by a delta E vs E telescope using a thin (5 micron) front solid state detector element in a three-element telescope. Experiment operation is controlled by a microprocessor-based data system. Inflight calibration is provided by radioactive sources mounted on telescope covers which can be closed for calibration purposes and for radiation protection during the course of the mission. Ion and electron spectral information is determined using both broad-energy-range rate channels and a 32 channel pulse-height analyser (channels spaced logarithmically) for more detailed spectra. The instrument weighs 5.775 kg and uses 4.0 W of power. Some initial in-ecliptic measurements are presented which demonstrate the features of the instrument. (Abstract from: L. Lanzerotti et al., Astron. Astrophys. Suppl. Ser. 92, 349-363, 1992) For more information, see: http://sd-www.jhuapl.edu/Ulysses/hiscale.html and http://ulysses.jpl.nasa.gov/spacecraft/inst_hiscale.html Online Resources http://ulysses-ops.jpl.esa.int/ulysses/archive/hiscale.html http://sd-www.jhuapl.edu/Ulysses/ Instrument Logistics Data Rate: 100 kbps Instrument Start Date: 1990-10-06 Instrument Owner: Johns Hopkins Applied Physics Lab |
