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

The Monte Carlo particle transport is based on the tracking and the interaction of particles through the matter based on the interaction cross sections. It considers the material composition and the particle behavior, allowing the user to get a higher level of accuracy.  The calculation can be run on several threads (parallelization) to increase the calculation speed. During the calculation, the results tracking window allows you to follow the evolution of the calculation. Furthermore, mappings can be used to display several quantities in 3D.

The scripting module allows you to customize and accelerate your use of FASTRAD® by interacting through scripts, with the main FASTRAD® entities. For example, you can perform parameterized modelling or iterative calculations with this module, as well as customize your input/output file format. The possibilities offered by the scripts are limitless. A complete documentation (Doxygen) is provided to describe the scripting API and to give application samples.

Save time in your radiation analysis:

  • Sigma (error) stopping criteria: The user can now define the error criterion, based on which the calculation for each detector will stop
  • Calculation resumption in Monte-Carlo module: The user can now resume an RMC calculation where it stopped, in order to shoot more particles and get better convergence

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.

 Internal Charging Analyses

The detailed internal charging tool allows the calculation of several quantities: the incident electron flux (pA/cm²), the charge deposition rate (total)(C/m3/s), the charge deposition rate (primaries)(C/m3/s), the dose rate (rad/s) and the deposited energy (MeV). These quantities can be estimated for volumes and/or surfaces or point detectors (based on their type).

These calculations are based on the Monte Carlo particle transport method.

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