Table 3.

Properties of the three sensors (Electron Analyzer System (EAS), Proton Alpha Sensor (PAS), and Heavy Ion Sensor (HIS)) that constitute the Solar Wind Analyzer (SWA).

Field of view −24° to 42° (Az) −30° to 66° (Az)
−22.5° to 22.5° (El) −17° to 22.5° (El)
Particle species Electrons H+, He++ 3He – Fe
Energy range 1 eV–5 keV 0.2 keV/q–20 keV/q 0.5 keV/q–100 keV/q (Az)
0.5 keV/q–16 keV/q (El)
energy resolution 12% 8% 6%
measurement parameters Flux, velocity, energy distribution 3D 3D velocity distribution Energy, charge, mass, direction 3D
Angular resolution 10°
Cadence 4 s 4 s 30 s

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