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Integrating FLUKA with Geant4: A Comprehensive Guide to FLUGG

This course offers an in-depth exploration of FLUGG, an extension of FLUKA that facilitates geometry definition, material assignments, and magnetic field configurations in the Geant4 framework. Participants will learn how to navigate geometries using Geant4 classes while performing tracking via FLUKA. The workshop covers installation procedures, compatibility checks, and practical applications of the combined systems, with access to essential resources, including the FLUGG tar file and installation instructions. Join us to enhance your skills in particle simulation and geometry management.

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Integrating FLUKA with Geant4: A Comprehensive Guide to FLUGG

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  1. FLUKA with Geant4 Geometry FLUKA Courses Pavia Mar-2006

  2. FLUKA with Geant4 Geometry FLUGG is an extension of FLUKA that allows to • Define the geometry, material assignments, magnetic field in the Geant4 format • navigate in the geometry calling the Geant4 geometry classes • FLUGG is available as a tar file from the FLUKA web page • Presently updated to Geant4 version 6 WARNING: • No geometry debugger (not possible) IMPORTANT NOTE: • Only the navigation is performed by G4, the tracking (multiple scattering, approach to boundaries etc) is performed by FLUKA Info: ATL-SOFT-98-039, ATL-SOFT-99-004 http://cern.ch/geant4/

  3. G1WR LKWR NRMLWR General Structure of FLUGG [1/2] main program extern “C” void fluka(…) GEANT4 instances Physics FLUKA NORML G1 LOOK wrappers GEANT4 geometry G4Navigator getLocalExitNormal ComputeStep LocateGlobalPoint

  4. General structure of FLUGG [2/2] • The Installation procedure prepares Libraries with the G4 geometry classes and the FLUGG “wrappers” • The User prepares the Detector Construction and a C++ main from template • The application is built from Flugg + FLUKA library • The C++ main calls Geometry initialization and FLUKA “real” main • The FLUKA “real” main reads datacards and performs a “standard” run: • Calls to Geometry routines are redirected through FLUGG wrappers to G4 geometry methods • Output of results is the standard FLUKA

  5. What is needed FLUKA distributionhttp://www.fluka.org FLUGG tar filehttp://www.fluka.org CLHEP librarieshttp://proj-clhep.web.cern.ch/proj-clhep/ GEANT4 distribution http://cern.ch/geant4/ WARNING: • The CLHEP version must be compatible with the G4 version in FLUGG. • Be careful to compiler “consistency” among libraries. How to install: • Step by step instruction can be found in FLUGG talk of Houston-2005 FLUKA course, accessible from the FULKA web site.

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