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NUADU - Specification

Weight:    5,7 kg
Max. dimensions (L x W x H):    290 mm x 245 mm x 245 mm
Power consumption:    5 W
Non-op heater (eclipse):    5 W
Number of detectors:    16
Detector type (custom design):    PIPS PD (Canberra), light-tight
Single detector active area:    142 mm2 (14.2 mm x 10 mm)
Depleted layer thickness:    300 micrometers
Detector bias voltage:    70V
Input aperture size:    46.5 x 10 mm
Energetic resolution:    4 discrimination levels
Discrimination levels (H):    46 keV, 50 keV, 81 keV, 158 keV
Field of view (one pixel, fwhm):    11,52 x 2,51 (elev. x azimuth)
Field of view (one pixel, total):    15,04 x 5,02 (elev. x azimuth)
Field of view (all detectors, total):    184 x 5,02 (elev. x azimuth)
Geometrical factor (sensor head):    0.202 cm2.sr
Geometrical factor (single detector):    0.0125 cm2.sr
Number of pixels in elevation plane:    16 pixels / 180
Number of pixels in azimuthal plane:    128 pixels / 360
Total resolution over full solid angle:    2048 pixels / 4-PI
Sampling rate:    128 samples / spin
Spacecraft spin rate:    4 s
Image synchronization:    by Sun reference pulse and Spin segment clock
Dynamic range:    254 events per 1 pixel, E > 20keV, and 31,25ms
Max (isotrop.) intensity:    5.6 x 109 particles (>20keV) /m2.s.sr
Average data rate:    0.5 kbps 16 kbps
Single charged particle cutoff energy:    300 keV
Deflection high voltage:    10 kV(+5 kV, -5kV)

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