Description
The Radiation Model aggregates radiation exposure data from multiple Radiation Panel components attached to a Physical Object. It tracks Total Ionizing Dose (TID) and Single Event Effect (SEE) probability, and provides factory methods for creating common panel configurations such as cubic or rectangular prism geometries.
Example Use Cases
- Component Radiation Analysis: Track cumulative radiation exposure on spacecraft electronics.
- Shielding Effectiveness: Evaluate radiation attenuation provided by different shielding configurations.
- Mission Lifetime Assessment: Monitor TID accumulation to predict component degradation over mission duration.
Module Implementation
The model collects radiation data from registered panels and computes aggregate exposure metrics.
Total Ionizing Dose
TID represents the cumulative absorbed radiation dose over time. The model tracks when TID exceeds a sensitivity threshold and calculates performance degradation:
where is the performance factor, is the accumulated TID in Grays, is the sensitivity threshold, and is the degradation rate per Gray.
Single Event Effect Probability
SEE probability is scaled by a component-specific sensitivity factor:
where is the base probability from radiation panels and is the sensitivity factor.
Panel Configurations
The model provides factory methods to create radiation panels on geometric shapes:
- Cube: Six panels of equal area on each face
- Rectangular Prism: Six panels sized to match each face of the prism
Each panel is positioned and oriented to face outward from the geometry, with configurable shielding parameters.
Exposure Scaling
An exposure scale factor allows adjustment of the radiation contribution from panels to the model’s TID and SEE calculations.
Assumptions/Limitations
- Radiation panels must be registered with the model to contribute to aggregate calculations.
- The model assumes uniform shielding properties across each panel face.
- Self-shielding between panels is not automatically calculated.