BackForwardInstrument:  EPSI 

Instrument details
Acronym EPSI
Full name Electron Proton Spectrometer Instrument
Purpose Measures the kinetic energy of electrons and protons in space to monitor radiation belts, detect solar particle events, and support NOAA’s Space Weather Prediction Center in forecasting geomagnetic storms.
Short description

Provided to NOAA through the European Space Agency (ESA) and financed via Norway's contribution to ESA's Space Safety Program

More details of instrument when available.
Background

Based on legacy technology from Space Norway's NORM (Norwegian Radiation Monitor) and Radiation Monitoring Units developed for the EU’s Galileo Second Generation satellites.
Scanning Technique

N/A (in-situ measurement in the platform environment)
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate

 

Providing Agency ESA
Instrument Maturity Flown on operational programme
Utilization Period: TBD
Last update: 2026-11-09
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
  • Solar wind in situ plasma and energetic particles, magnetic field, at L1
  • Solar wind at L1 - Electron sensor
  • Solar wind at L1 - Proton sensor
Mission objectives
Primary mission objectives
  • Electron integral directional flux
  • 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.