Speaker
Markus Frank
(CERN)
Description
The detector description is an essential component that has to be used to analyse
and simulate data resulting from particle collisions in high energy physics experiments.
Based on the DD4hep detector description toolkit a flexible and data driven simulation
framework was designed using the Geant4 tool-kit. We present this framework and describe
the guiding requirements and the architectural design, which was strongly driven by ease
of use. The goal was, given an existing detector description, to simulate the detector
response to particle collisions in high energy physics experiments with minimal
effort, but not impose restrictions to support enhanced or improved behaviour.
Starting from the ROOT based geometry implementation used by DD4hep an automatic
conversion mechanism to Geant4 was developed. The physics response and the mechanism
to input particle data from generators was highly formalized and can be instantiated
on demand using using known factory patterns. A palette of components to model the
detector response is provided by default, but improved or more sophisticated components
may easily be added using the factory pattern. Only the final configuration of the
instantiated components has to be provided by end-users using either C++ or python
scripting or an XML based description.
Author
Markus Frank
(CERN)
Co-authors
Andre Sailer
(CERN)
Frank-Dieter Gaede
(Deutsches Elektronen-Synchrotron (DE))
Marko Petric
(Jozef Stefan Institute (SI))
Nikiforos Nikiforou
(CERN)
