# FASTRAD® Modules, discover all the functionalities:

**Radiation CAD interface & data-exchange**

Simplified configuration, limited to creating and handling 3D radiation models, allowing to import and export entire STEP object characteristics.

**A graphical user interface will allow you to create and handle geometries:**

- Insertion of simple shapes (box, slab, cylinder, cake, sphere, cone, triangular prism, elliptical cylinder and torus, extruded trapeze).
- Viewer 3D / 2D + objects handling (rotation, translation, etc. )
- A material definition interface with a database
- Hollowing out and merge simple shapes and also shapes coming from the imported .STEP file
- Advanced display and screenshot tool
- Mass calculation
- Material management tool (display, replacement, list cleaner)
- Detector handling tools
- Advanced search tool
- Measuring tool
- Clipping plane

** Ray tracing calculation **

Create solids using points in the 3D model and perform essential calculations: sector analysis (Minimum and Slant Ray tracing), equivalent thickness, ray view and shielding mapping.

Dose calculation by sector analysis on any Fastrad model containing simple shapes or tessellated volumes (coming from STEP or IGES format files).

**Two calculation methods are proposed:**

- The slant one (associated with solid sphere Dose Depth Curve)
- The ‘minimum path’ method (with a shell shpere Dose Depth Curve)

This interface is dedicated to the calculation of the Displacement Damage Equivalent Fluence (DDEF) and TID in sensitive areas.

** Monte Carlo calculations ****& ****Scripting module**

A script language, allowing the user to interact with the main FASTRAD entities, parameterized tasks, deal with custom file format, etc. This service gives you also the keys to the most efficient Monte Carlo calculation: Both Forward and Reverse Monte Carlo calculation are available. The Monte Carlo is based on actual physical interactions of particles with matter. It considers the material composition and the particle behavior allowing to get a higher level of accuracy. The calculation can be run on several threads (parallelization) to decrease the computation time. The two calculations, Forward and Reverse MC, can be launched by command line (batch file) with the definition of several computation parameters in optional argument (number of shots, output file, number of threads,etc.) for a given ‘.ray’ model.

Dose estimate using Reverse Monte Carlo for incident electron and proton flux.

For complex 3D models including different geometrical scales, the dose calculation becomes very time-consuming with a standard (Forward) Monte Carlo approach. The Reverse Monte Carlo approach gives a powerful solution for accurate TID calculation.

Primary and secondary electrons, primary protons and secondary photons (Bremsstrahlung) are taken into account. Point detectors and sensitive volumes can be considered to obtain:

– the deposited ionizing dose: total and per particle type

– the total non-ionizing dose (NIEL tables)

– the transmitted fluence per particle type

TID and TNID calculations are performed in function of the materials assigned to the punctual or volume targets.

Note that the Reverse Monte Carlo method is dedicated to an isotropic environment. Reverse MC module proposes also to visualize the particle trajectories and to display the interaction properties when a track is selected. The 3D mapping module allows calculation of deposited energies, transmitted flux and associated errors in sensitive zones. The Reverse MC module is able to produce one mapping file for all the detectors and sensitive volumes or a merged mapping file including all the selected detectors.