Speaker
Mr
Marco Pinto
(LIP)
Description
Space radiation detectors could be rather complex, due to their specific geometries and materials. In addition, the need of trustful physics analysis and/or accurate detector response simulation taking into account all sources of secondary particles resulting from the interaction of primary particles with the detector materials, drives the need of a detailed detector geometry implementation.
The Geant4 simulation toolkit has been successfully applied to the field of space physics, namely in the simulation of Space Radiation Environment and Effects. The common procedure to import mechanical drawings of space detectors provided by design engineering teams in CAD files, is to code versions of these drawings into Geant4 through the Geant4 Geometry classes or by commercial tools such as FASTRAD® [ref]. Recently, a very useful tool was developed - CADMesh [refs]- which allows 3D tessellated geometrical volumes to be converted to a GDML format that can then be imported into Geant4 applications. This enables to simulate detector geometries imported directly from CAD systems in the form of STEP files. However, a dedicated procedure has to be followed in order to correctly import geometries corresponding to the different materials into Geant4 applications. The complete conversion procedure applied to two space radiation monitors, MFS and RADEM, resulting in geometries navigable by Geant4, is presented.
Summary
The CAD files of two instruments designed for space missions, MFS for Alphasat and RADEM for JUICE, were successfully converted into GDML and simulated with Geant4. Procedure and results will be presented.
Primary author
Mr
Marco Pinto
(LIP)
Co-authors
Dr
Luisa Arruda
(Laboratorio de Instrumentação e Física Experimental de Partículas)
Dr
Patrícia Gonçalves
(LIP - Laboratório de Instrumentação e Física Experimental de Partículas)
