Mercury Plasma Particle Experiments - High-Energy Particle instrument for electron (HEP-e)
High-Energy Particle instrument for electrons, one of the MPPE sensors, measures energy spectra of high-energy electrons from 30 up to 700 keV to study plasma acceleration and transport in Mercury’s magnetosphere and coupling between magnetosphere and exosphere. It consists of Single-sided silicon strip Solid-State Detector and ASIC (SSSD-ASIC), front-end processing board, and high-voltage supply unit.
Field of view | (18 deg × 57 deg)×2 |
Angular resolution | 18 deg × 12 deg |
Energy range | 30–700 keV |
Energy resolution |
20 keV (≤20 ∘C) ΔE/E = 50% |
Time resolution |
4 s (1spin) (normal mode) 100 ms (burst mode) |
Geometrical factor | 0.036 cm2sr |
Mass | 0.27 kg |
Power | 3.04 W |
Dimensions | 82 mm × 134 mm × 115 mm |
Data rate |
0.0064 kbits/s (L-mode) 1.3 kbits/s (M-mode) 5.1 kbits/s (H-mode) |