High time resolution electron measurement by Fast Electron energy Spectrum Analyzer (FESA)
- Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa 229-8510 (Japan)
- Fuji Heavy Industries Ltd., 1-1-11, Yonan, Utsunomiya-shi, Tochigi 320-8564 (Japan)
- Research Institute for Sustainable Humanosphere, Gokasho, Uji, Kyoto 611-0011 (Japan)
We have newly developed an electron energy analyzer FESA (Fast Electron energy Spectrum Analyzer) for a future magnetospheric satellite mission SCOPE. The SCOPE mission is designed in order that observational studies from the cross-scale coupling viewpoint are enabled. One of the key observations necessary for the SCOPE mission is high-time resolution electron measurement. Eight FESAs on a spinning spacecraft are capable of measuring three dimensional electron distribution function with time resolution of 8 msec. FESA consists of two electrostatic analyzers that are composed of three nested hemispherical deflectors. Single FESA functions as four top-hat type electrostatic analyzers that can measure electrons with four different energies simultaneously. By measuring the characteristics of the test model FESA, we proved the validity of the design concept of FESA. Based on the measured characteristics, we designed FESA optimized for the SCOPE mission. This optimized analyzer has good enough performance to measure three dimensional electron distribution functions around the magnetic reconnection region in the Earth's magnetotail.
- OSTI ID:
- 21316810
- Journal Information:
- AIP Conference Proceedings, Vol. 1144, Issue 1; Conference: International conference on future perspectives of space plasma and particle instrumentation and international collaborations, Tokyo (Japan), 1-3 Nov 2006; Other Information: DOI: 10.1063/1.3169304; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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