BackForwardInstrument:  GGAK-E/GALS-E 

Instrument details
Full name GGAK-E / Detector of galactic cosmic rays
Purpose To measure protons in the galactic cosmic rays
Short description Three channels, for flux density of protons of energies > 600 MeV, > 800 MeV and > 1200 Mev, respectively
Background Part of the GGAK-E (Heliogeophysical Instrument Complex on Electro-L) package, also confirmed for Electro-M (GGAK-E/M) and adapted to Arctica (GGAK-E/A)
Scanning Technique Interplanetary space observation from GEO
Resolution N/A
Coverage / Cycle Near full interplanetary space, near continuous
Mass Power Data Rate


Providing Agency Roscosmos
Instrument Maturity Flown on operational programme
Utilization Period: 2012 to 2045
Last update: 2022-08-01
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 1
  • In-situ plasma probes, and energetic particle spectrometers and magnetometers at GEO and LEO, and magnetic field at GEO
  • Proton sensor at GEO
Mission objectives
Primary mission objectives
  • Proton integral 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.
VariableRelevance for measuring this variableOperational limitationsExplanation
Proton integral directional flux*3 - highNo specific limitation.Interplanetary space, high energy (over 1000 keV)