ErgSat/Mepi

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Medium-Energy Particle Experiments - Ion Mass Analyzer (MEP-i)

Members

  • PI
    • Shoichiro Yokota (JAXA/ISAS)
  • Co-PI
    • Satoshi Kasahara (The University of Tokyo)


Rules of the Road

  • For the general data policy for the ERG satellite, please refer to this webpage.


Specific to MEP-e Data

  • The data user is strongly encouraged to contact the PI in an early stage of his/her work using MEP-i data to discuss data usage and interpretation.


Updates on the Instrument Status, Data, Calibration, and Notes

  • 20170114
    • N/A

Past articles archived here


Instrument Specifications

  • Energy range: <10 to 180 keV/q
  • Energy resolution: 7% (FWHM)
  • Energy steps: 16 steps per scan
  • Mass discrimination: H+, He++, He+, O+, O+2
  • Sensor field of view: 360° (azimuth) × 3.5° (elevation)
  • Number of anodes: 16
  • Geometric factor
    • 2.4×10-4 cm2 sr keV/keV/anode (normal)
    • 1.9×10-5 cm2 sr keV/keV/anode (narrow)
  • Time resolution: 4 s for full 3-D distribution function


Observation Modes

  • Normal mode
  • TOF high-resolution mode

Observation Mode Changes

Calibration Information

Science Data Products

Level-2 Data
Name Description Dimension Nominal Time Resolution Data Load Routine for SPEDAS
Level-3 Data
Name Description Dimension Nominal Time Resolution Data Load Routine for SPEDAS


Data Inventory (Data Archive Status)

Data repository: http://ergsc.isee.nagoya-u.ac.jp/data/ergsc/satellite/erg/mepi/

Name Processed until Latest Calibration Version Remarks