SWE, a comprehensive plasma instrument for the WIND spacecraft
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The Solar Wind Experiment (SWE) on the WIND spacecraft is a comprehensive, integrated set of sensors which is designed to investigate outstanding problems in solar wind physics. It consists of two Faraday cup (FC) sensors; a vector electron and ion spectrometer (VEIS); a strahl sensor, which is especially configured to study the electron ‘strahl’ close to the magnetic field direction; and an on-board calibration system. The energy/charge range of the Faraday cups is 150 V to 8 kV, and that of the VEIS is 7 V to 24.8 kV. The time resolution depends on the operational mode used, but can be of the order of a few seconds for 3-D measurements. ‘Key parameters’ which broadly characterize the solar wind positive ion velocity distribution function will be made available rapidly from the GGS Central Data Handling Facility.
KeywordsData Handling Velocity Distribution Function Calibration System Magnetic Field Direction Outstanding Problem
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- Belcher, J. W., Lazarus, A. J., McNutt, R. L., Jr., and Gordon, G. S.: 1993, ‘Solar Wind Conditions in the Outer Heliosphere and the Distance to the Termination Shock’,J. Geophys. Res., to be published.Google Scholar
- Bellomo, A. and Mavretic, A.: 1978,MIT Plasma Experiment on IMP H and J Earth Orbited Satellites, MIT Center for Space Research Technical Report CSR-TR-78-2, 1978.Google Scholar
- Bridge, H. S., Belcher, J. W., Butler, R. J., Lazarus, A. J., Marvetic, A. M., Sullivan, J. D., Siscoe, G. L., and Vasyliunas, V. M.: 1977, ‘The Plasma Experiment on the 1977 Voyager Mission’,Space Sci. Rev. 21, 259.Google Scholar
- Loidl, A.: 1984, ‘HV Diodes Used as Variable Resistors and Switches’,J. Phys. E: Sci. Instruments 17, 357.Google Scholar
- Marsch, E.: 1991, in R. Schwenn and E. Marsch (eds.),Physics of the Inner Heliosphere, Vol. II, Springer-Verlag, Heidelberg, p. 45.Google Scholar
- Ogilvie, K. W., Scudder, J. D., and Doong, H.: 1978, ‘The Electron Spectrometer on ISEE-1’,ISEE Transactions on Geoscience Electronics GE-16 261.Google Scholar
- Scudder, J. D. and Olbert, S.: 1979a, ‘A Theory of Local and Global Processes which Affect Solar Wind Electrons. 1. The Origin of Typical 1 AU Velocity Distribution Functions-Steady State Theory’,J. Geophys. Res. 84, 2755.Google Scholar
- Scudder, J. D. and Olbert, S.: 1979b, ‘A Theory of Local and Global Processes which Affect Solar Wind Electrons. 2. Experimental Support’,J. Geophys. Res. 84, 6603.Google Scholar
- Vasyliunas, V. M.: 1971, ‘Deep Space Plasma Measurements, 12.1’,Methods of Experimental Physics 98, 49, Academic Press, New York.Google Scholar
- Young, D. T., Ghielmetti, A. G., Shelley, E. G., Marshall, J. A., Burch, J. L., and Booker, T. L.: 1987, ‘Experimental Tests of a Toroidal Electrostatic Analyzer’,Rev. Sci. Instrum. 58, 501.Google Scholar