Advanced Composition Explorer (ACE) Solar Wind Ion Composition Spectrometer (SWICS) and Solar Wind Ion Mass Spectrometer (SWIMS) Level 2 Data
Entry ID: ACE_SWICS_SWIMS_LEVEL2

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Summary
Abstract: The Solar Wind Ion Composition Spectrometer (SWICS) and the Solar Wind
Ion Mass Spectrometer (SWIMS) on ACE are instruments optimized for
measurements of the chemical and isotopic composition of solar and
interstellar matter. SWICS determines uniquely the chemical and
ionic-charge composition of the solar wind, the temperatures and mean
speeds of all major solar-wind ions, from H through Fe, at all solar
wind speeds above 300 km/s (protons) and 170 km/s (Fe+16), and
resolves H and He isotopes of both solar and interstellar
sources. SWICS will measure the distribution functions of both the
interstellar cloud and dust cloud pickup ions up to energies of 100
keV/e. SWIMS will measure the chemical and isotopic and charge state
composition of the solar wind for every element between He and
Ni. Each of the two instruments uses electrostatic analysis followed
by a time-of-flight and, as required, an energy measurement. The
observations made with SWICS and SWIMS will make valuable
contributions to the ISTP objectives by providing information
regarding the composition and energy distribution of matter entering
the magnetosphere.

SWICS level 2 data is organized into 27-day time periods (Bartels
Rotations - roughly one solar rotation period). For each Bartels
Rotation, the level 2 data contains time averages of solar wind
parameters over the following time periods:

- hourly
- daily
- 27 days (1 Bartels rotation)

SWICS level 2 data consists of the following solar wind data items:

- Bulk and Thermal ion Speeds (km/s) => H+, He+2, O+6, Mg+10, and Fe+11

- Ratio of Elements => 4He+2/O, 20Ne+8/O, 24Mg+10/O, and 56Fe+(7 to 12)/O

- Ratio of Charge States of the Same Element => C+5/C+6, O+7/O+6, and Fe+11/Fe+9

- Isotope ratios => 3He/4He, 22Ne/20Ne, 24Mg/26Mg

See:
http://www.srl.caltech.edu/ACE/ASC/level2/swics_swims_l2desc.html

Related URL
Link: GET DATA
Description: ACE SWICS/SWIMS Level 2 Data


Link: VIEW PROJECT HOME PAGE
Description: ACE Project Home Page


Link: VIEW RELATED INFORMATION
Description: ACE SWICS/SWIMS Level 2 Documentation


Data Set Citation
Dataset Originator/Creator: ACE SWICS/SWIMS Team
Dataset Title: ACE SWICS/SWIMS Level 2 Data
Dataset Release Date: 1997
Dataset Release Place: Pasadena, CA
Dataset Publisher: CalTech
Online Resource: http://www.srl.caltech.edu/ACE/ASC/level2/lvl2DATA_SWICS_SWIMS.html


Temporal Coverage
Start Date: 1997-08-25


Location Keywords
SPACE > EARTH MAGNETIC FIELD > MAGNETOSPHERE (OTHER)


Science Keywords
SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >ALPHA PARTICLE FLUX    [Definition]
SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE FLUX >ION FLUX    [Definition]
SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >PARTICLE COMPOSITION    [Definition]
SUN-EARTH INTERACTIONS >SOLAR ENERGETIC PARTICLE PROPERTIES >PARTICLE SPEED    [Definition]
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >ION CHEMISTRY/IONIZATION    [Definition]
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >PLASMA WAVES    [Definition]
SUN-EARTH INTERACTIONS >IONOSPHERE/MAGNETOSPHERE DYNAMICS >SOLAR WIND    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Platform
ACE >Advanced Composition Explorer (ACE)    [Information]


Instrument
SWICS >Solar Wind Ion Composition Spectrometer    [Information]
SWIMS >Solar Wind Ion Mass Spectrometer    [Information]


Project
ACE >Advanced Composition Explorer (ACE) Project    [Information]


Keywords
solar energetic particles
charged particles
solar wind
ions
flux
He
Fe
C
O
Ne
Mg


Data Set Progress
IN WORK


Originating Center
CALTECH


Data Center
Advanced Composition Explorer, Space Radiation Laboratory, California Institute of Technology    [Information]
Data Center URL: http://www.srl.caltech.edu/ACE/

Data Center Personnel
Name: DR. ANDREW DAVIS
Email: ad at srl.caltech.edu
Contact Address:
ACE Science Center
Morrisroe Astroscience Laboratory
Mail Code 220-22
California Institute of Technology
City: Pasadena
Province or State: CA
Postal Code: 91125
Country: USA



Distribution
Distribution_Media: online www
Fees: none


Publications/References
See:
http://www.srl.caltech.edu/ACE/

for a list of ACE publications.

Creation and Review Dates
DIF Creation Date: 2004-11-30
Last DIF Revision Date: 2009-03-30

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