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Ion Composition Instrument (ESIC)

ResourceID
spase://SMWG/Instrument/Equator-S/ICI

Description

ESIC measures the 3D distribution functions of the major ion species, H, He+, He++, and O+. It consists of a
retarding-potential analyzer (RPA), followed by a toroidal energy-per-charge (E/q) analyzer with disk-shaped field of view,
followed by a 20 kV post-acceleration into a time-of-flight (ToF) analysis section. Without RPA operation, the E/q range is
15 eV to 40 keV, otherwise it starts at essentially zero volts. To accommodate the large dynamic range in ion fluxes, the
instrument has split the 360 degrees FoV into two 180 degree sections whose sensitivities differ by a factor 100. Moments
of the distributions of all 4 ion species are computed on board and are available every 4 spins, i.e., every 6 seconds.
The instrument is identical to the CODIF portion of the CIS instrument on CLUSTER.

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Details

Version:2.2.2

Instrument

ResourceID
spase://SMWG/Instrument/Equator-S/ICI
ResourceHeader
ResourceName
Ion Composition Instrument (ESIC)
AlternateName
ESIC
AlternateName
ICI
ReleaseDate
2019-05-05 12:34:56Z
Description

ESIC measures the 3D distribution functions of the major ion species, H, He+, He++, and O+. It consists of a
retarding-potential analyzer (RPA), followed by a toroidal energy-per-charge (E/q) analyzer with disk-shaped field of view,
followed by a 20 kV post-acceleration into a time-of-flight (ToF) analysis section. Without RPA operation, the E/q range is
15 eV to 40 keV, otherwise it starts at essentially zero volts. To accommodate the large dynamic range in ion fluxes, the
instrument has split the 360 degrees FoV into two 180 degree sections whose sensitivities differ by a factor 100. Moments
of the distributions of all 4 ion species are computed on board and are available every 4 spins, i.e., every 6 seconds.
The instrument is identical to the CODIF portion of the CIS instrument on CLUSTER.

Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Lynn.M.Kistler
InformationURL
Name
NSSDC's Master Catalog
URL
Description

Information about the Ion Composition Instrument (ESIC) experiment on the Equator-S mission.

InstrumentType
EnergeticParticleInstrument
InvestigationName
Ion Composition Instrument (ESIC) on Equator-S
ObservatoryID