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This data set contains the calibrated Saturn tour data collected by
the CHEMS sensor of the MIMI instrument aboard the Cassini spacecraft
for the Cassini mission. CHEMS stands for CHarge Energy Mass
Spectrometer.
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| Citation |
Vandegriff J., Kusterer M.B., Mafi J.,
CO-S-MIMI-4-CHEMS-CALIB-V1.0, CASSINI S MIMI CHEMS SENSOR CALIBRATED
DATA V1.0, NASA Planetary Data System, 2018. |
| Digital Object Identifier (DOI) |
10.17189/1519606
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| Data Set Abstract |
The Cassini Magnetospheric Imaging Instrument(MIMI) Charge Energy Mass
Spectrometer (CHEMS) contains a deflection system and an overall field
of view of 159 x 4 deg. that is comprised of three distinct energetic
particle telescopes each having a field of view of 53 x 4. All
telescopes share the same deflection mechanism, but each has its own
start and stop microchannel plate (MCP) and its own solid-state
detector (SSD). Much of the data returned by CHEMS is separated by
telescope. The deflection plate power supply (DPPS) has 32 different
voltages that can be applied across the deflection plates. For any
single DPPS step, the electrostatic analyzer only transmits incoming
ions within a narrow range of energy per charge (a 3% pass band).
The CHEMS calibrated data set includes the Pulse Height Analysis (PHA)
data collected during the Saturn tour. CHEMS PHA provides a list of
individually detected particles, with specific detection parameters
for each event, including TOF, energy deposited in the SSD, and
telescope number.
The energy per charge data for six ion species (H+, He+, H2+, He++,
O++, W+) are presented in two forms. (The W+ water ion group includes
O+, OH+, H20+ and H30+). One form is a set of tables which are of
variable length and use a comma to separate various fields, and the
other is a PDF file containing the energy per charge spectrograms and
are based on CHEMS PHA data.
The original data has been decommutated and decoded by software at the
Applied Physics Laboratory (APL) and calibrated and further processed
by software at the University of Maryland.
This data set should be among the first used by a user of any of the
MIMI CHEMS archive as it will lead one to information required to
search for more detailed or highly specialized features in the
original data. |
| Search/Access Data |
Planetary Plasma Interactions Website
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| Additional Information |
| Mission Information |
CASSINI-HUYGENS
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| Data Set Information |
CO-S-MIMI-4-CHEMS-CALIB-V1.0 |
| Instrument Host Information |
CO
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| Instrument Information |
MIMI
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| Target Information |
SATURN
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