BackForwardInstrument:  SEISS/EHIS 

Instrument details
Acronym SEISS/EHIS
Full name SEISS / Energetic Heavy Ion Sensor
Purpose To measure proton, alpha-particle and heavy ion fluxes at platform level
Short description Suite of spectrometers to measure protons, alpha particles and ions till Ni (Z=28) in the energy range 10-200 Mev/n
Background Part of the SEISS (Space Environment In-Situ Suite) package
Scanning Technique N/A (in situ measurement in the platform environment)
Resolution N/A
Coverage / Cycle N/A
Mass 4.5 kg Power 6.3 W Data Rate 512 bps

 

Providing Agency NASA
Instrument Maturity Flown on operational programme
Utilization Period: 2017-12-18 to ≥2036
Last update: 2017-06-05
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
Mission objectives
Primary mission objectives
  • Alpha particles differential directional flux
  • Heavy ion flux energy and mass spectrum
  • Proton differential directional flux
Show allShow fewer
Tentative 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
VariableRelevance for measuring this variableOperational limitationsExplanation
Proton differential directional flux5 - marginalNo specific limitation.Platform environment, high energy (over 1000 keV)
Alpha particles differential directional flux5 - marginalNo specific limitation.Platform environment. Medium-high energy (over 10 to >100 MeV/n)
Heavy ion flux energy and mass spectrum5 - marginalNo specific limitation.Platform environment. Medium-high energy (over 10 to >100 MeV/n)