User Guide

The GEANT4 Radiation Analysis for Space (GRAS) application is a Geant4-based tool that deals with common radiation analyses types (TID, NIEL, fluence, path length, charge deposit, dose equivalent, equivalent dose, etc.) in generic 3D geometry models.

The main requirements for a new generic tool for radiation analyses in space are ease of use, flexibility and modularity of the application. GRAS can be used for obtaining a variety of simulation output types for whichever (GDML or C++) 3D geometry model. This avoids the creation of a new tailored C++ Geant4-based application for every new project. Thanks to a modular design, the GRAS analysis type capabilities can be easily extended.

Contents

Tools

• User Interface (UI)
• How to execute GRAS
• Geometry
• Magnetic Field Manager
• Physics
• Biasing options
• Source
• Analysis
• Analysis in detail
• Adjoint Monte-Carlo
• Two-Stage Analysis
• Visualisation
• Distributed parallel computing
• Results and formats
• GRAS commands

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GRAS/trunk/r2242