10.2 Relevant environments

a. Radiation-induced backgrounds shall be analysed for spacecraft and planetary-missions where there is the potential for energy deposition events within the bandwidth of the sensor from the radiation environment, whether from a single event or accumulation of interaction of events.

NOTE Example of accumulation is from pile-up of pulses within the detector time-resolution, the cumulative effect of which exceeds the event detection threshold and results in a false event.

b. The analysis specified in requirement 10.2a shall include all components of the environment that have the potential to affect the instrument, including secondary particles from the spacecraft structure and local planetary bodies, and man-made radiation sources

NOTE Example of man-made radiation sources are radioactive calibration sources, and radio-isotope thermoelectric generators.