Instrument: ASPOC (MMS)
Active Spacecraft Potential Control Devices
To enable measurement of low-energy ions and electrons by the plasma instruments and eliminate spurious electric fields that can contaminate double-probe measurements
Device emitting ions towards space to neutralise the electrical charge acquired by the platform.
Part of a package of instruments to implement the SMART (Solving Magnetospheric Acceleration, Reconnection, and Turbulence) mission
4 satellites co-flying in tetrehedral pattern, moving to different positions into the Magnetosphere for 3-D field reconstruction
Coverage / Cycle
Full magnetospheric volume
Flown on an R&D satellite
2015 to ≥2021
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
Solar and space environment monitors Field or radiowave sensor
No WIGOS subcomponents have been defined.
Tentative Evaluation of Measurements
The following list indicates which measurements can
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
Variable Relevance for measuring this variable Operational limitations Explanation
Electrostatic charge 3 - high No specific limitation. Platform. Electrostatic charge