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Instruments > Solar/Space Observing Instruments > Particle Detectors > HI-SCALE

Preferred term

HI-SCALE  

Definition

  • 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 Group: Instrument_Details Entry_ID: HI-SCALE Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Particle Detectors Short_Name: HI-SCALE Long_Name: Heliosphere Instrument for Spectra, Composition, and Anisotropy and Low Energies End_Group Group: Associated_Platforms Short_Name: ULYSSES End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Gamma Ray Number_Channels: 2 Spectral_Frequency_Coverage_Range: 1 - 15 MeV End_Group Online_Resource: http://ulysses-ops.jpl.esa.int/ulysses/archive/hiscale.html Online_Resource: http://sd-www.jhuapl.edu/Ulysses/ Sample_Image: http://ulysses-ops.jpl.esa.int/ulysses/images/hiscale.gif Group: Instrument_Logistics Data_Rate: 100 kbps Instrument_Start_Date: 1990-10-06 Instrument_Owner: Johns Hopkins Applied Physics Lab End_Group End_Group (en)

Broader concept

URI

https://gcmd.earthdata.nasa.gov/kms/concept/319307da-05bc-4263-a49a-1347ed0aba2b

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