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Instrument details
Acronym
XEP-e
Full name
Extremely high-energy electron experiments
Purpose
Measurement of extremely-high-energy electrons through the magnetosphere, specifically the Van Allen belt
Short description
Spectrometer to observe electrons in the energy range 0.4-20 MeV. Detailed description not yet available
Background
Part of a package to measure low, medium, high and extremely-high energy electrons (LEP-e, MEP-e, HEP-e and XEP-e) and low and medium energy ions (LEP-i and MEP-i)
Scanning Technique
Volumetric exploration of the magnetosphere as the satellite travels along the HEO with perigee 300 km and apogee 30,000 km whilst spinning at 1 round / 8 s
Resolution
Coverage / Cycle
Full magnetospheric volume, more frequently in low-middle latitudes, consistently with the 31° orbital inclination
Mass
Power
Data Rate
Providing Agency
JAXA
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
2017 to ≥2021
Last update:
2021-10-02
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 2 Electron sensor [in LEO and cross magnetosphere]
Mission objectives
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
Variable Relevance for measuring this variable Operational limitations Explanation
Electron differential directional flux 2 - very high No specific limitation. Magnetosphere, medium and high energy (over 40 to over 400 keV)
Instrument: XEP-e