Development of a second generation low energy plasma analyzer for small satellites

Details Development of a second generation low energy plasma analyzer for small satellites Development of a second generation low energy plasma analyzer for small satellites

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993casi.proc...88g&link_type=abstract

In Canadian Aeronautics and Space Inst., Proceedings of the CASI Symposium on Small Satellites p 88-96 (SEE N94-35082 10-18)

Computer Science

Mars Atmosphere, Plasma Diagnostics, Solar Wind, Spacecraft Instruments, Thermal Plasmas, Japanese Space Program, Plasma Density, Plasma Drift, Plasma Temperature, Small Scientific Satellites

Scientific paper

The Japanese PLANET-B project, to be launched in 1998, will study the Martian atmosphere and its interaction with the solar wind. The Canadian contribution to this project is the thermal plasma analyzer (TPA), which will be carried on the PLANET-B spacecraft to measure the local Martian thermal plasma density, drift velocity, and temperature. The TPA design has benefitted from experience gained in developing the cold plasma analyzer for the Swedish Freja scientific satellite. The TPA will be required to sort incoming particles by mass over a 1-60 atomic mass unit range and by energy over the 0.05-200 eV range. The TPA sensor will be mounted on a 1.68-m boom and will perform detailed plasma measurements under the supervision of a power and controller unit. The sensor assembly includes a hemispherical electrostatic analyzer which segregates incoming particles. After passing through this analyzer, the particle charges are amplified and deposited onto an anode containing 256 pixel elements. The sensor electronics detects the charge buildup and identifies its location and time of flight. Data for each detected hit are stored and removed for transfer to the controller unit, which will include algorithms for data reduction and compression for transmission at low telemetry rates.

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