2.0.1 spase://vspo/numericalData/P_WIND_HDR_3DP_3S Wind 3DP 3-s onboard-computed ion moments 2007-06-01T00:00:00 Wind 3DP proton and alpha particle moments (computed on-board), 3-s resolution, spase://SMWG/Person/Robert.P.Lin GeneralContact spase://SMWG/Repository/NASA/NSSDC Online Open in CDF via ftp from CDAWeb ftp://cdaweb.gsfc.nasa.gov/pub/istp/wind/3dp_pm CDAWeb http://cdaweb.gsfc.nasa.gov/ CDF CALCULATED spase://SMWG/Instrument/WIND/3DP ThermalPlasma 1994-12-01T00:00:00 2000-10-14T00:00:00 PT3S Heliosphere.NearEarth spase://SMWG/Observatory/WIND Wind ISTP/Wind GGS/Wind Wind/ISTP Wind/GGS 2009-05-20T20:00:12Z The Wind spacecraft was launched on November 1, 1994 and is the first of two NASA spacecraft in the Global Geospace Science initiative and part of the ISTP Project. The science objectives of the WIND mission are: (1) Provide complete plasma, energetic particle, and magnetic field input for magnetospheric and ionospheric studies; (2) Determine the magnetospheric output to interplanetary space in the up-stream region; (3) Investigate basic plasma processes occurring in the near-Earth solar wind; and (4) Provide baseline ecliptic plane observations to be used in heliospheric latitudes from ULYSSES. Wind has on-board propulsion and its design lifetime is three to five years, with redundant subsystems. Wind is cylindrical, approximately 2.8 m in diameter by 1.25 m high, with body-mounted solar cells. It has long wire spin-plane antennas, inertial booms, and spin-plane appendages to support sensors. Wind has experiment booms deployed along both Z axes. The spin rate is 20 rpm around an axis within 1 degree of normal to the ecliptic. Data are stored using on-board tape recorders and are relayed to the Deep Space Network at one of two rates: 5.5 or 11.1 kbps. For the first nine months of operation, Wind was placed in a double-lunar swingby orbit near the ecliptic plane, with apogee from 80 to 250 Earth radii and perigee of between 5 and 10 Earth radii. In this orbit, lunar gravity assists were used to keep its apogee over the day hemisphere of the Earth, and magnetospheric observations are made. Wind was then inserted into a small "halo" orbit, about the sunward Sun-Earth gravitational equilibrium point (L1), varying from 235 to 265 Earth radii. In this orbit Wind measures the incoming solar wind, magnetic fields and particles continuously and provides an approximately one-hour warning to the other ISTP spacecraft of changes in the solar wind. In 2001 and 2002 Wind has executed a distant prograde orbit that took it +/- 300 Re leading and legging Earth. This orbit provided a wide baseline to study solar wind structures and correlations. In 2003, Wind reached the L2 Lagrange point 240 Re anti-sunward from Earth providing a 500 Re spatial separation from ACE solar wind observations along with measurements of the distant Earth magnetotail. Since 2004, Wind has been permanently parked in a L1 halo orbit where it continues to provide high-quality solar wind measurements. spase://SMWG/Person/Adam.Szabo ProjectScientist WIND spacecraft home page http://wind.nasa.gov NSSDC's Master Catalog http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1994-071A Information about the Wind mission spase://vspo/observatory/84 Heliosphere.NearEarth Heliosphere.Inner Earth.Magnetosheath Earth.Magnetosphere Earth.Magnetosphere.Magnetotail Earth.Magnetosphere.Main spase://SMWG/Instrument/WIND/3DP Hot Plasma and Charged Particles (3DP) WIND/3DP 2009-05-20T21:10:14Z This investigation, a three-dimensional plasma analyzer, is designed to meet the following objectives: (1) to make the first detailed exploration of the interplanetary particle population in the suprathermal energy range between solar wind plasma energies and 100 keV; (2) to study particle acceleration at the sun, in the interplanetary medium, and upstream from the earth; (3) to study the transport of particles in the interplanetary medium in the critical transition energy range between solar wind plasma and cosmic rays; and (4) to study the basic plasma processes occurring in the interplanetary medium, such as the production of radio emission by beam-plasma processes (Type III bursts) and shock waves (Type II), soliton collapse, and solar wind flux. The instrument measures the three-dimensional distribution of plasma and energetic electrons and ions with high energy, angular, and temporal resolution, over the energy range 10 eV to 5 MeV (different ranges for different parts of the instrument). The instrument consists of three detector systems, SST, EESA, and PESA. The SST consists of two arrays of semiconductor detectors (electron and proton), each consisting of six separate telescopes covering an aperture of 108 x 36 deg. EESA and PESA are quadrispherical analyzers (electron and proton, respectively), each mounted on a separate inertia boom. These analyzers, of novel design, provide significant measurements even at the lowest flux levels likely to be encountered by this spacecraft. The symmetrical quadrispherical electrostatic analyzers provide a large geometric factor, a uniform angular response at all polar angles, with about 1-deg angular resolution, and a 360-deg field of view. Microprocessors are employed to provide physically meaningful onboard data processing and compression, as well as flexibility of operation. For example, 10 moments of positive ion and electron distributions are computed every half spin period. In addition, the particles are sorted by pitch angle, using the magnetic field vector obtained directly from the magnetometer on board. spase://SMWG/Person/Robert.P.Lin PrincipalInvestigator NSSDC's Master Catalog http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1994-071A&ex=1 Information about the Hot Plasma and Charged Particles (3DP) experiment on the Wind mission. spase://SMWG/instrument/1994-071A-01 QuadrisphericalAnalyser Hot Plasma and Charged Particles (3DP) on Wind spase://SMWG/Observatory/WIND spase://SMWG/Repository/NASA/NSSDC NSSDC 2008-08-26T21:02:30Z National Space Science Data Center spase://SMWG/Person/Edwin.J.Grayzeck.Jr GeneralContact spase://SMWG/Person/Edwin.V.Bell.II GeneralContact spase://SMWG/Repository/NSSDC spase://SMWG/Person/Robert.P.Lin 1999-08-18T00:00:00Z Prof. Robert P. Lin University of California, Berkeley rlin@ssl.berkeley.edu +1-510-642-1149 spase://SMWG/Person/Edwin.V.Bell.II Dr. Edwin V. Bell, II GSFC-Code 690.1 spase://SMWG/Person/Adam.Szabo 2007-05-30T15:16:05Z Dr. Adam Szabo NASA Goddard Space Flight Center

Code 672, Greenbelt, MD 20771, USA

adam.szabo@nasa.gov 1-301-286-5726 spase://SMWG/Person/Edwin.J.Grayzeck.Jr Dr. Edwin J. Grayzeck, Jr. GSFC-Code 690.1