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SWEAP SPC

ResourceID
spase://CNES/Instrument/CDPP-AMDA/PSP/SPC

Description

The SPC is a Faraday Cup made of high purity tungsten, niobium, and molybdenum,
TZM, that is mounted on the edge of the solar shield and looks directly at the Sun to
measure ion and electron fluxes and flow angles. It measures fluxes and flow angles as
a function of energy from 50 eV/q to 8 keV/q for ions and 50 eV to 2 keV for electrons.
It has a full width field-of-view of 60 degrees. The SPC consists of a disk-shaped
modulator section comprising a ground grid, a high-voltage modulator grid, and a limiting
aperture ground grid. Behind this is a smaller disk-shaped collector grid housing ground
grids, a suppressor grid, 4 collector plates, and collector plate outputs.

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Details

Version:2.4.1

Instrument

ResourceID
spase://CNES/Instrument/CDPP-AMDA/PSP/SPC
ResourceHeader
ResourceName
SWEAP SPC
AlternateName
Solar Probe Cup
ReleaseDate
2019-11-12 16:00:05Z
Description

The SPC is a Faraday Cup made of high purity tungsten, niobium, and molybdenum,
TZM, that is mounted on the edge of the solar shield and looks directly at the Sun to
measure ion and electron fluxes and flow angles. It measures fluxes and flow angles as
a function of energy from 50 eV/q to 8 keV/q for ions and 50 eV to 2 keV for electrons.
It has a full width field-of-view of 60 degrees. The SPC consists of a disk-shaped
modulator section comprising a ground grid, a high-voltage modulator grid, and a limiting
aperture ground grid. Behind this is a smaller disk-shaped collector grid housing ground
grids, a suppressor grid, 4 collector plates, and collector plate outputs.

Acknowledgement
National Aeronautics and Space Administration, NASA
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Justin.C.Kasper
2.MetadataContactspase://SMWG/Person/James.M.Weygand
InformationURL
Name
Instruments webpage
URL
http://sweap.cfa.harvard.edu/SWEAP.html
Description

SWEAP Instrument Web Page

InstrumentType
FaradayCup
InvestigationName
Parker Solar Probe SWEAP Investigation
ObservatoryID
spase://CNES/Observatory/CDPP-AMDA/PSP
Caveats
The present SPC dataset contains two types of ion moment calculations, one called "moments" and the other called "fits". The user should be aware that the data in "moments" are derived from straight integration of the SPC ion spectra. It is a basic and generally robust method, albeit with various caveats as provided in the quality flags. The "fits" dataset is by contrast more sensitive to the adjustments and limitations generally associated with the application of multi-component fitting procedures (protons, alphas, and third peak). For those reasons, the unfamiliar user shall use the "moments" data preferentially. If using the "fits" datasets, the user shall carefully check the quality flags and refer to their explanations before using that data.