Geant4

Geant4 is available as an RPM package for Scientific Linux 4. Acually, it should be already installed on most of the Linux PCs of the PSI group.
Type rpm -q geant4 to check which version is installed, yum install geant4 geant4-examples to install or update. See also Scientific Linux.

1.  Links

• Geant4
  The main page for Geant4
• Geant4 at INFN Genova
  Plenty of tutorials, papers, talks and links
• Documentation
  • Go to the GEANT4 home-page and get the latest documentation (make sure you have installed the latest version)
  • Class list
  • Geant4 Source reference
  • CLHEP 1.9.2.2 Source reference (local, with search)
  • Cross-reference of the complete Geant4 sources
• GATE - Geant4 Application for Tomographic Emission
  Geant4 and PET, with sophisticated support for time (movement of the detectors, decaying of the sources).
• PDG info on materials
• Parallel Geant4
  • ParGeant4
  • ParGeant4 @CERN
  • Notes on Parallel Geant4
  • TOP-C Task Oriented Parallel C/C++ library
• DAWN (Drawer for Academic WritiNgs) visualization - best for papers
  • DAWN home page
  • tutorial
• Visualisation tricks
  • http://geant4.slac.stanford.edu/Presentations/vis/VisDevelopments.pdf

2.  Documentation

• Attach:AppliDevGuide_4_9_3.pdf

3.  Geant4 Course

• Roma 2004
  • course material
• Pisa 2006
  • course material
• local copy of the course materials
• JLab 2012

4.  Examples

from Sergio (Updated to work with Geant4.8):

• Attach:MineralPET_scint.tgz
  A simple source and scintillator setup, with only minimal EM processes, and a proper G4SensitiveDetector that saves data in a Root TTree.
• Attach:MineralPET_target.tgz
  A simple setup to test different converter target materials for e- -> gamma beam. Uses a SteppingAction to save (to a Root TTree) info about generated particles. Includes a more complete and modular PhysicsList, excluding processes that need the additional data files.

Newer versions of the same examples might be available from the PSI Subversion repository:

 svn checkout svn+ssh://psi.phys.wits.ac.za:/SVN/psi/scint

from Jonathan

• Example Of The Implementation Of Electromagnetic Fields In Geant 4

This example shows how to add electromagnetic fields to a Geant 4 simulation.

Step-by-step guide to getting radioactive decay example working with Geant4.9.5

5.  Hints and changes

• G4.8.2 uses the new CLHEP 2, which requires the CLHEP:: namespace - just specify it or add some "using" statements
• To re-seed the Random Number Generator for many repeats of a MC from GEANT4 on differnt cores. In the main program of the GEANT4 application -

    // choose the Random engine
    CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine);
    if (argc>=3) {
        CLHEP::HepRandom::setTheSeed(atoi(argv[2]));
    }

 ./<geant4app> <macro>.mac 1
 ./<geant4app> <macro>.mac 2

• Discussion about using cmake or make to compile projects.
• See the following page for a tutorial on using Swift: Swift tutorial

6.  Installing GEANT4

• Download the sources and the data libraries here
• The Installation guides are here
• Building Geant4 on Windows
  • see ROOT and GEANT4 in CYGWIN on Windows XP (not sure if this works anymore)
• Building Geant4 on Linux
  • See instructions at the GEANT4
• Building Geant4 on a Mac (a la Martin)
  • To have the visualisation tools, automatically download and install the data libraries (make sure you have x11, Qt, openmotif, expat) .... do the following (from your build directory) ....:

  > cmake -DCMAKE_INSTALL_PREFIX=/Users/martin/Geant4/geant4.9.5-install/
          -DCMAKE_BUILD_TYPE=RelWithDebInfo 
          -DGEANT4_INSTALL_DATA=ON 
          -DGEANT4_USE_QT=ON 
          -DGEANT4_USE_XM=ON \\                   <--- if you have it
          -DGEANT4_USE_OPENGL_X11=ON 
          -DGEANT4_USE_RAYTRACER_X11=ON \\                   <--- if you have it
          -DMOTIF_INCLUDE_DIR=/usr/OpenMotif/include \\                    <--- if you have it
          -DMOTIF_LIBRARIES=/usr/OpenMotif/lib/libXm.3.1.dylib \\                   <--- if you have it
           /path to your source of geant4.9.5.p01/

7.  Physics Lists for after 4.9.5

• We start from "Shielding" for MinPET Physics lists from the Use Cases.