WMO OSCAR | Details for Instrument GGAK-E/SKL-E

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Instrument: GGAK-E/SKL-E

Instrument details

Acronym	GGAK-E/SKL-E
Full name	GGAK-E / Solar cosmic rays spectrometer
Purpose	To measure electrons and protons in the solar cosmic rays
Short description	Spectrometer for energy fluxes in the ranges 0.2-20 MeV (electrons) and 3.5-320 MeV (protons)
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	Sun pointing from GEO
Resolution	N/A (full disk)
Coverage / Cycle	Full solar disk, near continous
Mass		Power	Data Rate

Providing Agency	Roscosmos
Instrument Maturity	Flown on operational programme
Utilization Period:	2013 to 2043
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

Electro (RosHydroMet)
- Electro-L N1 (see instrument status) TBD - TBD
- Electro-L N3 (see instrument status) TBD - TBD
- Electro-L N5 (see instrument status) TBD - 2034
- Electro-L N2 (see instrument status) Feb 2013 - TBD
- Electro-L N4 (see instrument status) Feb 2023 - 2033
- Electro-L N6 (see instrument status) 2029 - 2039
- Electro-L N7 (see instrument status) 2033 - 2043

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
Electron sensor at GEO
Proton sensor at GEO

Mission objectives

Primary mission objectives

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.

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Electron differential directional flux*	4 - fair	No specific limitation.	Sun pointing, medium and high energy (over 40 to over 400 keV)
Proton differential directional flux*	4 - fair	No specific limitation.	Sun pointing, high energy (over 1000 keV)
Solar wind density	2 - very high	No specific limitation.	Solar viewing. Inferred by elecron and proton spectroscopy
Solar wind temperature	2 - very high	No specific limitation.	Solar viewing. Inferred by elecron and proton spectroscopy
Solar wind velocity	2 - very high	No specific limitation.	Solar viewing. Inferred by elecron and proton spectroscopy