2.0.1 spase://vspo/numericalData/P_ACE_HDR_MAG_300S ACE MAG 5-min Key Parameter (recent) data 2007-06-01T00:00:00 ACE Magnetic Field 5-Minute Key Parameters spase://SMWG/Person/Norman.F.Ness TechnicalContact spase://SMWG/Repository/NASA/NSSDC Online Open in CDF via ftp from CDAWeb ftp://cdaweb.gsfc.nasa.gov/pub/istp/ace/mfi CDAWeb http://cdaweb.gsfc.nasa.gov/ CDF CALIBRATED spase://SMWG/Instrument/ACE/MAG MagneticField 2002-07-01T00:00:00 -P7D Data are current to within about 1 week. PT300S Heliosphere.NearEarth spase://SMWG/Observatory/ACE ACE Advanced Composition Explorer 1997-045A Explorer 71 2009-05-20T20:00:12Z The objective of the Advanced Composition Explorer (ACE) is to collect observations of particles of solar, interplanetary, interstellar, and galactic origins, spanning the energy range from that of KeV solar wind ions to galactic cosmic ray nuclei up to 600 MeV/nucleon. Definitive studies will be made of the abundances of essentially all isotopes from H to Zn (Z = 1-30), with exploratory isotope studies extending to Zr (Z = 40). The ACE payload includes six high resolution spectrometers, each designed to provide the optimum charge, mass, or charge-state resolution in its particular energy range. Each spectrometer has a geometry factor optimized for the expected flux levels, so as to provide a collecting power greater by a factor of 10-1000 times that of previous or planned experiments. The payload also includes three additional instruments of standard design to monitor energetic electrons, H and He ions, and a magnetometer. The ACE spacecraft is based on the design of the Charge Composition Explorer, built at JHU/APL for the Active Magnetospheric Particle Tracer Explorer (AMPTE) program. The spacecraft spin axis is pointed towards the Sun to within +/- 20 degrees, and it occupies a halo orbit about the L1 Earth-Sun libration point. Powered by solar cells, the spacecraft has a design life of at least five years, and it returns data in daily tape recorder dumps, received through NASA JPL's Deep Space Network and initially processed at NASA-GSFC. The average data telemetry rate is 6.7 Kbs. spase://SMWG/Person/Edward.C.Stone.Jr PrincipalInvestigator ACE Home Page http://www.srl.caltech.edu/ACE/ ACE mission home page at Caltech with data download NSSDC's Master Catalog http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1997-045A Information about the ACE mission spase://vspo/observatory/2 Heliosphere.NearEarth Heliosphere.Inner spase://SMWG/Instrument/ACE/MAG ACE Magnetic Field Instrument ACE Magnetometer ACE MAG ACE MFI 1997-045A-09 2009-05-20T21:10:13Z The ACE Magnetometer (MAG) experiment consists of two triaxial fluxgate magnetometers mounted remotely on booms extending beyond the spacecraft solar panels at four meters from the spacecraft center. Each identical sensor (M1, M2) has a wide dynamic range of sensitivity at +- 0.004 to +- 65536 nT and measures the three vector components of the magnetic field. Usage of twin magnetometer sensors for measurements of weak interplanetary magnetic fields is a proven approach based on experience from many past space missions. The MAG sensors were originally built as spares for the MFI instrument on the WIND spacecraft and have been given minor modifications for inclusion on ACE. Readout of MAG data includes three data types: (1) average magnetic field vectors from the primary and secondary sensors, (2) "Snap-Shot Memory" data, and (3) Fast Fourier Transform (FFT) data. The average vector readout includes 216 bps corresponding to six vectors per second. These vector readouts can be split between M1 and M2 in the ratios of 3:3, 5:1, or 6:0. The "Snap-Shot Memory" stores field vectors at the maximum sampling rate of 30 vectors per second and is read out at 48 bps. The FFT readout includes 17 seconds accumulation of vector data transformed into spectral matrices of the components and total magnitude at a transmission rate of 32 bps. Prof. Norman F. Ness of the Bartol Research Institute at the University of Delaware is the MAG Experiment Manager. spase://SMWG/Person/Norman.F.Ness CoInvestigator spase://SMWG/Person/Charles.W.Smith TechnicalContact Instrument description http://www.ssg.sr.unh.edu/mag/ACE.html Description of the ACE magnetometer design and instrument characteristics, with links to data and other documentation NSSDC's Master Catalog http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1997-045A&ex=9 Information about the Magnetometer (MAG) experiment on the ACE mission. spase://SMWG/instrument/1997-045A-09 Magnetometer Magnetometer (MAG) on ACE spase://SMWG/Observatory/ACE 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/Norman.F.Ness 2000-07-31T00:00:00Z Dr. Norman F. Ness University of Delaware nfness@bartol.udel.edu +1-302-831-8116 spase://SMWG/Person/Edwin.V.Bell.II Dr. Edwin V. Bell, II GSFC-Code 690.1 spase://SMWG/Person/Charles.W.Smith Dr Charles W. Smith University of New Hampshire spase://SMWG/Person/Edward.C.Stone.Jr 2001-04-02T00:00:00Z Prof. Edward C. Stone, Jr. California Institute of Technology ecs@srl.caltech.edu +1-626-395-8321 spase://SMWG/Person/Edwin.J.Grayzeck.Jr Dr. Edwin J. Grayzeck, Jr. GSFC-Code 690.1