Table 1 HEP performance and specifications. Resolution is indicated by full-width at half maximum (FWHM)
From: High-energy electron experiments (HEP) aboard the ERG (Arase) satellite
Parameter | HEP-L | HEP-H |
|---|---|---|
Energy range | 70 keV–1.0 MeV | 0.7–2.0 MeV |
Energy resolution (ΔE/E) | 11% at 300 keV, 18% at 750 keV | 17% at 750 keV, 12% at 1.2 MeV |
Energy binning of onboard histograma | 70, 100, 124, 153, 188, 230, 280 340, 412, 499, 605, 730, 850, 990, 1400, and 1800 (keV) | 100, 153, 230, 340, 412, 499, 605, 730, 850, 990, 1200, 1400, 1600, 1800, and 2000 (keV) |
Field of view | 10° (Azimuth) × 60° (Elevation) for a module 10° (Azimuth) × 180° (Elevation) for three modules | |
Angular resolution | 4° ± 1° | 15° ± 3° |
Geometric factor | 3.1 × 10−4 cm2 sr (one module) 9.3 × 10−4 cm2 sr (three modules) | 3.1 × 10−3 cm2 sr (one module) 9.3 × 10−3 cm2 sr (three modules) |
Time resolution | 8 s per full 3-D distribution function (for normal spin period of 8 s) (15 histograms are generated for a 1/16th of spin period) | |
Flux dynamic range | 104–107/cm2/s/sr | 103–106/cm2/s/sr |
Mass | 6.8 kg | |
Power | 17.6 W | |