BackForwardInstrument:  CPD 

Instrument details
Acronym CPD
Full name Charged Particle Detector
Purpose Observation of charged particles at platform level
Short description Six solid-strate particle detectors for energies in the ranges 0.03-1 MeV (electrons), 0.2-30 MeV (protons) and 1-100 MeV (alpha-particles); directional observation capability
Background Part of a package of instruments for Space Weather and Earth's interior observation
Scanning Technique In-situ at platform level
Resolution N/A
Coverage / Cycle N/A
Mass Power Data Rate


Providing Agency DNSC
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1999 to 2014
Last update: 2022-07-25
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
  • Electron sensor at LEO
  • Proton sensor at LEO
  • Alpha-particle sensor at LEO
Mission objectives
Primary mission objectives
  • Alpha particles integral directional flux
  • 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.
VariableRelevance for measuring this variableOperational limitationsExplanation
Electron integral directional flux*5 - marginalNo specific limitation.Platform environment, low, medium and high energy (up to over 400 keV)
Proton integral directional flux*5 - marginalNo specific limitation.Platform environment, medium and high energy (over 40 to over 1000 keV)
Alpha particles integral directional flux*5 - marginalNo specific limitation.Platform environment. Low-medium energy range (<10 up to 100 MeV/n)