The High Energy Telescope for STEREO

The IMPACT investigation for the STEREO Mission includes a complement of Solar Energetic Particle instruments on each of the two STEREO spacecraft. Of these instruments, the High Energy Telescopes (HETs) provide the highest energy measurements. This paper describes the HETs in detail, including the...

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Bibliographic Details
Published in:Space science reviews 2008-04, Vol.136 (1-4), p.391-435
Main Authors: von Rosenvinge, T. T., Reames, D. V., Baker, R., Hawk, J., Nolan, J. T., Ryan, L., Shuman, S., Wortman, K. A., Mewaldt, R. A., Cummings, A. C., Cook, W. R., Labrador, A. W., Leske, R. A., Wiedenbeck, M. E.
Format: Article
Language:English
Subjects:
Aerospace Technology and Astronautics
Astrophysics and Astroparticles
Corona
Kinetic energy
Physics
Physics and Astronomy
Planetology
Scientific apparatus & instruments
Solar physics
Space exploration
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Spacecraft
Telemetry
Telescopes
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Summary:The IMPACT investigation for the STEREO Mission includes a complement of Solar Energetic Particle instruments on each of the two STEREO spacecraft. Of these instruments, the High Energy Telescopes (HETs) provide the highest energy measurements. This paper describes the HETs in detail, including the scientific objectives, the sensors, the overall mechanical and electrical design, and the on-board software. The HETs are designed to measure the abundances and energy spectra of electrons, protons, He, and heavier nuclei up to Fe in interplanetary space. For protons and He that stop in the HET, the kinetic energy range corresponds to ∼13 to 40 MeV/n. Protons that do not stop in the telescope (referred to as penetrating protons) are measured up to ∼100 MeV/n, as are penetrating He. For stopping He, the individual isotopes 3 He and 4 He can be distinguished. Stopping electrons are measured in the energy range ∼0.7–6 MeV.
ISSN:0038-6308
1572-9672
DOI:10.1007/s11214-007-9300-5