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Space Environment Monitor

NSSDCA ID: 1980-043A-04

Mission Name: NOAA-B
Principal Investigator:Dr. Donald J. Williams


This experiment was an extension of the solar proton monitoring experiment flown on the ITOS spacecraft series. The experiment package consisted of four detector systems and a data processing unit. The Low-Energy Proton Alpha Telescope (LEPAT) separately measured in five energy ranges both protons between 150 KeV and 40 MeV and alpha particles between 150 KeV/n and 25 Mev/n. There were two LEPATs viewing in the anti-sun and anti-earth directions with 60-deg viewing cones. The Proton Omnidirectional Detector (POD) measured protons above 10, 30, and 60 MeV, electrons above 140 Kev, and protons and electrons (inseparable) above 750 Kev. The High-Energy Proton Alpha Telescope (HEPAT) had a 50-deg viewing cone, view in the anti-earth direction, and it measured protons above 400 MeV and protons and alpha particles above 600 and 1000 Mev/n. The Total Energy Detector (TED) measured total energy above 1 KeV.

Alternate Names

  • NOAA-B/SpaceEnvironmentMonitor


  • Space Physics: Ionospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Carl O. BostromOther InvestigatorApplied Physics Laboratory
Dr. Herbert H. SauerOther InvestigatorNOAA Environmental Research
Dr. Donald J. WilliamsPrincipal InvestigatorNOAA Environmental Research
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