CERN Accelerating science

Published Articles
Title	DDG4 A Simulation Framework based on the DD4hep Detector Description Toolkit
Author(s)	Frank, M (CERN) ; Gaede, F (DESY) ; Nikiforou, N (CERN) ; Petric, M (CERN) ; Sailer, A (CERN)
Publication	2015
Number of pages	8
In:	J. Phys.: Conf. Ser. 664 (2015) 072017
In:	21st International Conference on Computing in High Energy and Nuclear Physics, Okinawa, Japan, 13 - 17 Apr 2015, pp.072017
DOI	10.1088/1742-6596/664/7/072017
Subject category	Computing and Computers
Abstract	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 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.
Copyright/License	publication: © 2015-2025 The Author(s) (License: CC-BY-3.0)

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