Key performance parameters of the SPI Spectrometer
Key performance parameters of the SPI Spectrometer
| Parameter | Value |
| Energy range | 18 keV - 8 MeV |
| Detector area | 500 cm² (Ge - Germanium) |
| Spectral resolution
(E/Delta (E) @ 1 MeV) |
~ 450 (i.e. 2.2 keV FWHM @ 1.33 MeV) |
| Field of view (corner to corner) | 16 deg fully coded |
| Angular resolution (point sources) | 2.5 deg FWHM |
| Narrow-line sensitivity
(3 sigma in 10**6 s, @ 1 MeV) |
2.4e-5 ph/(s cm²)
4.6e-5 ph/(s cm²) @ 511 keV |
| Continuum sensitivity
(3 sigma in 10**6 s, @ 1 MeV) |
8.8e-4 ph/(s cm² MeV) |
| Timing accuracy
(3 sigma) |
0.129 ms |
| Resources (following EID-A allocation): | |
| Mass | 1309 kg |
| Power (sun/eclipse) | 385/110 W |
| Data rate | 45 kbps |