Bochum 2018 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Instrumentation XIII

HK 42.3: Talk

Wednesday, February 28, 2018, 17:00–17:15, Audimax H1

Using CAD models in Geant4 and ROOT — •Elena Hoemann, Jan Mayer, and Andreas Zilges — Institute for Nuclear Physics, University of Cologne

Monte-Carlo simulations of experiments require precise implementation of geometries. Creating these from scratch in Geant4 or ROOT is difficult, time-consuming, and error-prone. Although in nearly all cases exact CAD files exist, integration of the geometry is often done manually. Through the usage of tessellated and tetrahedral elements (solids), it is possible to include CAD figures into Geant4 [1]. To carry on we are expanding the ROOT framework by a dedicated tetrahedron class to enable the usage of CAD files as well.

We have compared the different methods in contrast to manually implemented geometries by including simple figures like spheres and boxes, as well as real setups such as the HORUS and SONIC spectrometer at the University of Cologne.

Supported by the BMBF (05P15PUEN9/ELI-NP)
C.M. Poole, I. Cornelius, J.V. Trapp, C.M. Langton, Australas Phys Eng Sci Med 35 (2012) 329