{"imap_swapi_l3a_pui-he_00000000_v01.cdf":{"CDFFileInfo":[{"FileVersion":"3.9.1"},{"Format":"SINGLE"},{"Majority":"COLUMN"},{"Encoding":"IBMPC"},{"checksum":"NONE"},{"LeapsecondLastUpdated":"2017-01-01"}],"CDFglobalAttributes":[{"Acknowledgement":[{"0":"Users should acknowledge the sources of data used in all publications, presentations, and reports using an appropriate DOI. Appropriate acknowledgement to institutions, personnel, and funding agencies should be given, including acknowledging the IMAP Mission Principal Investigator, Prof. David J. McComas of Princeton University (Contract #80GSFC19C0027). IMAP Rules-of-the-Road for data usage can be found in the IMAP CMAD. "}]},{"Data_level":[{"0":"3a"}]},{"Data_type":[{"0":"L3a_PUI-HE>Level-3a Pickup Ion"}]},{"Data_version":[{"0":" "}]},{"Descriptor":[{"0":"SWAPI>The Solar Wind and Pickup Ion"}]},{"Discipline":[{"0":"Solar Physics>Heliospheric Physics"}]},{"File_naming_convention":[{"0":"source_descriptor_datatype_yyyyMMdd_vMMM.mmmm"}]},{"Generation_date":[{"0":" "}]},{"HTTP_LINK":[{"0":"https://imap.princeton.edu/"},{"1":"https://link.springer.com/collections/djacjcecei"},{"2":"https://spdf.gsfc.nasa.gov/pub/data/imap/documents/cmad/"}]},{"LINK_TITLE":[{"0":"IMAP The Interstellar Mapping and Acceleration Probe"},{"1":"IMAP Mission and Science Instruments Special Paper Collection"},{"2":"IMAP Calibration and Measurement Algorithms Document (CMAD)"}]},{"LINK_TEXT":[{"0":" "},{"1":" "},{"2":" "}]},{"Instrument_type":[{"0":"Particles (space)"}]},{"Logical_file_id":[{"0":" "}]},{"Logical_source":[{"0":"imap_swapi_l3a_pui-he"}]},{"Logical_source_description":[{"0":"IMAP Mission SWAPI Instrument Pickup Ion Parameters"}]},{"Mission_group":[{"0":"IMAP"}]},{"MODS":[{"0":" "}]},{"Parents":[{"0":" "}]},{"PI_affiliation":[{"0":"Princeton University"}]},{"PI_name":[{"0":"Prof. David J. McComas"}]},{"Project":[{"0":"STP>Solar Terrestrial Probes"}]},{"Rules_of_use":[{"0":"All IMAP data products are publicly released and citable for use in publications. Please consult the IMAP team publications and personnel for further details on production, processing, and usage of these data. "}]},{"Source_name":[{"0":"IMAP>Interstellar Mapping and Acceleration Probe"}]},{"TEXT":[{"0":"The Solar Wind and Pickup Ion (SWAPI) instrument onboard the Interstellar Mapping and Acceleration Probe (IMAP) is a top-hat electrostatic analyzer designed to measure energy-per-charge distributions of solar wind protons (H+), alpha particles (He++), and interstellar pickup ions (PUIs; combined H+ and He+) across a range of 0.1 to 20 keV/q. See https://imap.princeton.edu/spacecraft/instruments/solar-wind-and-pickup-ions-swapi for more details. "},{"1":"The PUI parameters are obtained after obtaining the proton parameters by fitting a filled-shell distribution to the coincidence count rates corresponding to the He+ PUI range using forward modeling, accounting for the 3D instrument response and spacecraft spin. The PUI distribution is assumed isotropic in the proton solar wind comoving frame. 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See release notes for details. Bit 2: Bad fit: fitting resulted in invalid values or large residuals. Bit 3: Fit error: fit failed to complete. Bit 4: preliminary MAG L1D was used for acquiring the magnetic field direction instead of the nominal MAG L2 product. Bit 15: indicates predictive ephemeris was used instead of reconstructed ephemeris. All other bits are reserved."}]}]}]}}