Speaker
Manuel Gallas
(CERN)
Description
Based on the ATLAS TileCal 2002 test-beam setup example, we present
here the technical, software aspects of a possible solution to the
problem of using two differe! nt simulation engines, like Geant4 and
Fluka, with ! the comm on geometry and digitization code. The specific
use case we discuss here, which is probably the most common one, is
when the Geant4 application is already implemented. Our goal then is
to run the same simulation using the Fluka package by re-using the
maximum number of the existing components.
For simple setups, a tool (FLUGG) already exists that allows to use
the Fluka engine while the navigation is performed with Geant4,
starting from a description of the geometry in terms of Geant4
classes. In complex applications, however, the geometry is often built
up at run time from the information stored in a database, and in these
cases such a tool cannot be used directly; furthermore, it does not
deal with sensitive detectors and digitization. We show how it is
possible to overcome these two problems by building around FLUGG a set
of tools ! for reading common Geometry Description Markup Language
(GDML) files as well as for generating the output in the format
allowing common processing algorithms.
Author
Manuel Gallas
(CERN)
