BackForwardInstrument:  SWS/SEM/HEPD 

Instrument details
Acronym SWS/SEM/HEPD
Full name Space Weather Suite / Space Environment Monitor / High Energy Particle Detector
Purpose Space weather - Charged particles at platform level
Short description Spectrometer for electrons and protons. See table below for energy ranges.
Background Development of the space environment monitor on FY-3A/B/C/D
Scanning Technique N/A (in-situ in the platform environment)
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate

 

Providing Agency CMA
Instrument Maturity Flown on operational programme
Utilization Period: 2021 to 2035
Last update: 2022-05-09
Detailed characteristics
Parameter Energy range Number of Directions
High energy proton 3-300 MeV 3
High energy electron 0.15-5.7 MeV 3
Medium energy proton 30 keV-5 MeV 18
Medium energy electron 30 keV - 400 keV 18
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
  • Electron sensor at LEO
  • Proton sensor at LEO
  • Alpha-particle sensor at LEO
  • Plasma density sensor at LEO
  • Plasma temperature sensor at LEO
  • Plasma velocity sensor at LEO
Mission objectives
Primary mission objectives
  • Alpha particles differential directional flux
  • 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.
VariableRelevance for measuring this variableOperational limitationsExplanation
Electron differential directional flux*4 - fairNo specific limitation.Sun pointing, medium and high energy (over 40 to over 400 keV)
Proton differential directional flux*4 - fairNo specific limitation.Sun pointing, high energy (over 1000 keV)
Alpha particles differential directional flux*1 - primaryNo specific limitation.Sun-pointing. Low-medium energy range (<10 up to 100 MeV/n)
Solar wind density1 - primaryNo specific limitation.Solar viewing. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Solar wind temperature1 - primaryNo specific limitation.Solar viewing. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Solar wind velocity1 - primaryNo specific limitation.Solar viewing. Infrerred from Proton. Electron and Alpha-particle spectroscopy