1- Install GEANT4: Geant4 9.6 release is available at: http://geant4.web.cern.ch/geant4/support/source_archive.shtml Or: Geant4 10.0 release is available at: http://geant4.web.cern.ch/geant4/support/download.shtml 2- Install root: version 5.34/18 release is available at: http://root.cern.ch/drupal/content/downloading-root 3- Download BubbleEx96.txt or BubbleEx10.txt from the wiki 4- Install and run the example: > mv BubbleEx**.txt BubbleEx**.tar > tar -xvf BubbleEx**.tar > cd BubbleEx** > make > BubbleEx (this will execute vis.mac) > BubbleEx run.mac (this will generate bubbleEx.root file) 5- To view the output: > root bubbleEx.root root> New TBrowser 6- There is also a macro dir with few root macro files to plot the results