BackForwardInstrument:  EPD (Alouette) 

Instrument details
Acronym EPD (Alouette)
Full name Energetic Particle Detectors
Purpose To determine the intensity structure of the lower portion of the outer Van Allen radiation belt at high latitudes and measure intensity changes associated with solar and geophysical phenomena, particularly aurorae.
Short description Six detectors (geiger counters and scintillators) in different orientations. Some omni-directional measuring electrons and protons >2.8 and >33 MeV. Other detectors pointed off spin axis measuring electrons and protons >250 and >500 keV.
Background New development
Scanning Technique N/A
Resolution
Coverage / Cycle
Mass Power Data Rate

 

Providing Agency CSA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1962 to 1975
Last update: 2023-10-16
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Energetic particle spectrometer
WIGOS Subcomponents
  • Subcomponent 2
  • Magnetospheric energetic particles and magnetometers
  • Electron sensor [cross magnetosphere]
  • Proton sensor [cross magnetosphere]
Mission objectives
Primary mission objectives
  • Aurora
  • Electron differential directional flux
  • Proton differential directional flux
Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.