Hands On 2: Confirming Your Geant4 Installation

Set up

1. Set up a work directory parallel to your copy of the Geant4 toolkit:
   • mkdir mytestdir


2. Copy to it two directories from the novice examples area of your copy of Geant4
   • cp -r geant4/examples/novice/N03
   • cp -r geant4/examples/novice/N07
   
   
3. Check that the following environment variables are set properly
   • G4INSTALL must point to the head of your copy of Geant4
   • G4WORKDIR should point to the work directory you just created
   • G4SYSTEM should be the system name (for Linux it is Linux-g++)
   • CLHEP_BASE_DIR must point to your installation of CLHEP
   • One of the visualization drivers that you built into the toolkit must be chosen. In this test we will choose OPENGL
     • G4VIS_USE_OPENGLX should be set to 1

Example N03

1. Go to the N03 directory
   • cd mytestdir/N03
   
   
2. Build the executable:
   • gmake
   
   
3. There should now be an executable file in mytestdir/bin/$G4SYSTEM/ named exampleN03


4. Go back to the N03 directory and run the executable
   • ../bin/$G4SYSTEM/exampleN03
   
   
5. A graphics window should open and you should see an Idle> prompt.
   • at the Idle> prompt enter /vis/viewer/set/viewpointThetaPhi 30 30 deg and return
   • next enter /run/beamOn 1 and return
   
   
6. You should now see something like this in the graphics window:



7. Enter exit to end the program.

Example N07

1. Go to the N07 directory
   • cd mytestdir/N07
   
   
2. Build the executable:
   • gmake
   
   
3. There should now be an executable file in mytestdir/bin/$G4SYSTEM/ named exampleN07


4. Go back to the N03 directory and run the executable
   • ../bin/$G4SYSTEM/exampleN07
   
   
5. A graphics window should open and you should see an Idle> prompt.
   • next enter /run/beamOn 1 and return
   
   
6. You should now see something like this in the graphics window:



7. Enter exit to end the program.