MMS Fly's Eye Energetic Particle Sensor

FEEPS quicklook plot in SPEDAS

SPEDAS provides command line and GUI access to the MMS FEEPS data.

For more information on the EPD-FEEPS instrument, please see the EPD Data Products Guide:

https://lasp.colorado.edu/mms/sdc/public/datasets/epd/ (EPD Data Products Guide 13Apr16 v4)

FEEPS Data

For more complete examples, see the FEEPS crib sheets located in the /projects/mms/examples/ folder.

Examples

Electron Data

To load and plot the MMS1 FEEPS electron data on March 7, 2016:

MMS> mms_load_feeps, datatype='electron', trange=['2016-02-15', '2016-02-16'], probe=1, data_rate='srvy'

MMS> tplot, 'mms1_epd_feeps_electron_intensity_omni_spin'

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  MMS1 FEEPS electron omni spin data on February 15, 2016

Ion Data

To load and plot the MMS1 FEEPS electron data on March 7, 2016:

MMS> mms_load_feeps, datatype='ion', trange=['2016-02-15', '2016-02-16'], probe=1, datarate='srvy'

MMS> tplot, 'mms1_epd_ion_electron_intensity_omni_spin'

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  MMS1 FEEPS ion omni spin data on February 15, 2016

Quicklook Plots

To create FEEPS Quicklook plots use the crib mms_load_feeps_crib_qlplots.pro This crib will load electron and ion data. It shows the user how to use mms_feeps_pad to calculate the pitch angle distributions. In addition spacecraft ephemeris data, FGM B-field data and data availability are loaded and displayed.

MMS> mms_load_feeps, datatype='ion', trange=['2016-02-15', '2016-02-16'], probe=1, datarate='srvy'

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  MMS1 FEEPS Quick Look data from February 15, 2016

FEEPS Sector Spectrograms

Examples

Sector-Time Spectrograms, No Sun Contamination Removed

To create sector spectrograms of FEEPS data on January 20, 2016:

MMS> mms_load_feeps, trange=['2016-01-20/19:50', '2016-01-20/19:55'], probe=1, data_rate='brst', level='12', /time_clip

MMS> feeps_sector_spec, probe=1, data_rate='brst'

MMS> tplot, ['mms1_epd_feeps_bottom_electron_count_rate_sensorid_3_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_4_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_5_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_10_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_11_sectspec']

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  MMS1 FEEPS Sector-Time Spectrogram on January 20, 2016

Sector-Time Spectrograms, With Sun Contamination removed

To create sector spectrograms of FEEPS data on January 20, 2016:

MMS> mms_load_feeps, trange=['2016-01-20/19:50', '2016-01-20/19:55'], probe=1, data_rate='brst', level='12', /time_clip

MMS> feeps_sector_spec, probe=1, data_rate='brst', /remove_sun

MMS> tplot, ['mms1_epd_feeps_bottom_electron_count_rate_sensorid_3_sun_removed_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_4_sun_removed_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_5_sun_removed_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_10_sun_removed_sectspec', $ 'mms1_epd_feeps_bottom_electron_count_rate_sensorid_11_sun_removed_sectspec']

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  MMS1 FEEPS Sector-Time Spectrogram With Sun Contamination Removed