Reload an already computed Monte-Carlo
A full RT computation needs to take into account the direct radiation, but also the scattering effect.
In CIVA, the interaction of the photons with the inspected specimen is simulated with a Monte-Carlo method, in which a given number of photons to be simulated must be defined.
The Monte-Carlo computation may take several hours.
First computation with analytic and Monte-Carlo computations (direct and scattered radiation)
After performing a simulation taking into account the direct and scattered radiation, the current version of CIVA allows to re-use the already computed Monte-Carlo for other simulations.
You may need to change the flaw position, dimension, or other parameters.
The “import Monte-Carlo computation” option allows the user to change one or several parameters of the model, and to keep the same scattered radiation than for the first computation.
CIVA will then compute only the direct radiation, and combine it with the scattering gotten from the loaded Monte-Carlo file.
Tool to import the already computed Monte-Carlo result
The image below represents a comparison of two simulations with two different sizes of inclusions. The first computation has been simulated with 10E9 photons (5 hours for the computation). In the second one, we loaded the Monte-Carlo from the first result (2 minutes for the computation).
Comparison of two simulations using the “Import Monte-Carlo computation” tool
Important notes:
- This tool is only available when keeping the same detector resolution and size.
- When using this tool, the user must be sure that the scattering effect will be the same in the different configurations.