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AMPTE-CCE Medium Energy Particle Analyzer (MEPA), Energetic Particles, H0, 0.1875 s Data

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This dataset contains high time resolution MEPA rate channel data. MEPA is a particle telescope with an ION head and a TOF head. The TOF head can measure species and energy, while the ION head only measures the energy of the ions, which are mostly protons. In fact, the counts in the ION head are all assumed to be protons up to 1830 keV. The ION head has 10 energy channels, and so the first 8 channels, that are all below 1830 keV, are assumed to be all protons, and the 2 channels above this are assumed to be all alphas. The TOF head has 9 energy channels that are generic, ions of any species are counted, and some species specific channels for protons, helium, oxygen, and iron. The AMPTE data was divided into records, with each record holding data from 4 spins. In any record, all the TOF species channels are always present, but only one of either a, the 10 ION head channels or b, 9 TOF generic channels are present. The majority of records have the ION head channels. The AMPTE spacecraft had a spin period of about 6 seconds. The exact spin period varies slightly and is included in the data. MEPA data is sectored into 32 directions per spin. Nearly all channels are reported as sectored values, but to conserve telemetry, many channels are only read out every other spin, or every fourth spin. In this data, all values are summed so that they are reported every fourth spin. Note that in the original AMPTE datesets, there was a timing problem which required that 19.75 seconds, one Major Frame of telemetry, be added to time values extracted from the processing system. This correction has already been made in the particle data in this dataset.

R.W. McEntire, JHU APL is acknowledged for its Role in restoring and providing AMPTE MEPA Data.

CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products

R.W. McEntire, JHU APL is acknowledged for its Role in restoring and providing AMPTE MEPA Data. Please acknowledge the data providers and CDAWeb when using these data.

Protons, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, Ion Records only

Protons, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, Ion Records only

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: ION_protons_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: ION_protons_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: ION_protons_INTEN.

Protons, Actual Daily Values of the Channel Midpoint Energies at the Middle of the Day

Protons, Daily Values for the Actual Channel Energy Ranges, from the Low End to the Midpoint of each Channel at the Middle of the Day for the Channels in the corresponding Spectrum

Protons, Daily Values for the Channel Energy Ranges, Mid to High

Protons, Daily Values for the Actual Channel Energy Ranges, from the Midpoint to the High End of each Channel at the Middle of the Day for the Channels in the corresponding Spectrum

Helium, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the Sector Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, Ion Records only

Helium, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the Sector Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, Ion Records only

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: ION_helium_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: ION_helium_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: ION_helium_INTEN.

Helium, Actual Daily Values of the Channel Midpoint Energies at the Middle of the Day

Helium, Daily Values for the Actual Channel Energy Ranges, from the Low End to the Midpoint of each Channel at the Middle of the Day for the Channels in the corresponding Spectrum

Helium, Daily Values for the Actual Channel Energy Ranges, from the Midpoint to the High End of each Channel at the Middle of the Day for the Channels in the corresponding Spectrum

Epoch 1, for the Micro-Channel Plate, MCP, Solid State Detector, SSD, and Time of Flight, TOF, Data

Spin Period 1, for the Micro-Channel Plate, MCP, Solid State Detector, SSD, and Time of Flight, TOF, Data

Sector 1, for the Micro-Channel Plate, MCP, Solid State Detector, SSD, and Time of Flight, TOF, Data

Gain 1, for the Micro-Channel Plate, MCP, Solid State Detector, SSD, and Time of Flight, TOF, Data

Micro-Channel Plate, MCP, 1, Count Rate from Counts summed over 4 Spins

Micro-Channel Plate, MCP, 2, Count Rate from Counts summed over 4 Spins

Micro-Channel Plate, MCP, 3, Count Rate from Counts summed over 4 Spins

Solid State Detector, SSD, Count Rate from Counts summed over 4 Spins

Protons, TOF, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

Protons, TOF, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_protons_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_protons_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_protons_INTEN.

Protons, TOF, Daily Values for the Channel Energy Ranges, Low to Mid

Protons, TOF, Daily Values for the Channel Energy Ranges, Mid to High

Helium, TOF, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

Helium, TOF, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_helium_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_helium_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_helium_INTEN.

Helium, TOF, Daily Values for the Channel Energy Ranges, Low to Mid

Helium, TOF, Daily Values for the Channel Energy Ranges, Mid to High

Oxygen, TOF, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

Oxygen, TOF, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_oxygen_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_oxygen_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_oxygen_INTEN.

Oxygen, TOF, Daily Values for the Channel Energy Ranges, Low to Mid

Oxygen, TOF, Daily Values for the Channel Energy Ranges, Mid to High

Iron, TOF, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

Iron, TOF, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_1 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, either Ion or TOF Records

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_iron_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_iron_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_iron_INTEN.

Iron, TOF, Daily Values for the Channel Energy Ranges, Low to Mid

Iron, TOF, Daily Values for the Channel Energy Ranges, Mid to High

All Ions, TOF, Counts per Sector, Spectrogram, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_2 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, TOF Records only

All Ions, TOF, Counts per Sector, Stack Plot, with each Sector being a Sum from 4 Spins, the Time given is the SECTOR_2 Midpoint in Spin 2 out of Spins 0, 1, 2, and 3, TOF Records only

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_all_ions_COUNTS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_all_ions_CPS.

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: TOF_all_ions_INTEN.

Protons, High-Resolution Counts for every Sector in every Spin, Spectrogram

Protons, High-Resolution Counts for every Sector in every Spin, Spectrogram, the Time given is the Midpoint of SECTOR_3, Ion Records only

Protons, High-Resolution Counts Rate for every Sector in every Spin, Spectrogram

Protons, High-Resolution Differential Intensity for every Sector in every Spin, Spectrogram

Protons, High-Resolution Counts for every Sector in every Spin, Stack Plot

Protons, High-Resolution Counts for every Sector in every Spin, Stack Plot, the Time given is the Midpoint of SECTOR_3, Ion Records only

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: HIRES_ION_protons_COUNTS.

Protons, High-Resolution Counts Rate for every Sector in every Spin, Stack Plot

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: HIRES_ION_protons_CPS.

Protons, High-Resolution Differential Intensity for every Sector in every Spin, Stack Plot

This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: HIRES_ION_protons_INTEN.

Protons, High-Resolution Daily Values of the Channel Midpoint Energies

Protons, High-Resolution Daily Values for the Channel Energy Ranges, Low to Mid

Protons, High-Resolution Daily Values for the Channel Energy Ranges, Mid to High

Spacecraft Spin Axis Direction, Unit Vector, Geocentric Solar Ecliptic, GSE, Coordinates

Magnetic Field Vector, at Sector Midpoints, Geocentric Solar Ecliptic, GSE, Coordinates