BackForwardInstrument:  SST 

Instrument details
Acronym SST
Full name Solid State Telescope
Purpose To measure superthermal ions and electrons to remotely sense the expansion of the heated plasma sheet that occurs at substorm onset
Short description Two devices, each with three particle detector plates (silicone solid state detectors) spaced in the center. The two devices are positioned side by side and in reverse such that ions and electrons from the same direction are detected. Energy range: 30-300 keV (electrons), and 30-300 keV/n (ions with Z from 1 to 8)
Background Part of a package of instruments to study the Magnetosphere
Scanning Technique 5 satellites moving to different positions into the Magnetosphere for 3-D field reconstruction
Resolution N/A
Coverage / Cycle Full magnetospheric volume
Mass 1.43 kg Power 1.2 W Data Rate

 

Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2008-01-15 to ≥2020
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
  • Electron differential directional flux
  • Heavy ion flux energy and mass spectrum
  • Proton differential directional flux
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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
Electron differential directional flux1 - primaryNo specific limitation.Cluster flown through the magnetosphere, low and medium energy (up to 400 keV)
Proton differential directional flux1 - primaryNo specific limitation.Cluster flown through the magnetosphere, low and medium energy (up to 1000 keV)
Alpha particles differential directional flux3 - highNo specific limitation.Cross-magnetosphere satellite cluster. Low-medium energy range (<10 up to 100 MeV/n)
Heavy ion flux energy and mass spectrum1 - primaryNo specific limitation.Cross-magnetosphere satellite cluster. Low-medium energy range (<10 up to 100 MeV/n)