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Instrument details
Acronym
SEPICA
Full name
Solar Energetic Particle Ionic Charge Analyzer
Purpose
To measure the ionic charge state Q, the energy E, and the nuclear charge Z, for energies above 0.2 MeV/n
Short description
Energetic particles entering the multi-slit collimator are electrostatically deflected between six sets of electrode plates which are supplied with variable high voltages up to 30 kV. The deflection, which is inversely proportional to energy per charge, E/Q, is determined in the back portion of the instrument. Z ranging from 2 to 26. Energy range: 0.1-18 MeV/n for Z>2, 0.3-6 Mev/n for alpha-particles
Background
Part of a package of instruments for solar observation
Scanning Technique
Sun pointing from the L1 Lagrange libration point
Resolution
N/A (full disk)
Coverage / Cycle
Full Sun disk, nearly continuous
Mass
28.6 kg
Power
16 W
Data Rate
600 bps
Providing Agency
NASA
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
1997 to 2005-02-04
Last update:
2021-11-10
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 1 Solar wind at L1 - Alpha-particle sensor Solar wind at L1 - Heavy ion sensor
Mission objectives
Primary mission objectives Alpha particles differential directional flux Heavy ion flux energy and mass spectrum Show all Show 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
Instrument: SEPICA