Hello, There is a problem in the normalization factor inside gps when adding several sources with corresponding intensities. Please see Hypernews forum Event_And_Track_Management #623 for all details. This problem could be critical for simulation results, because the normalization was correct for previous versions of geant. It does not give any error message and seems to work if we do not look further inside... Alain
This bug has been fixed long time ago in tag event-V08-03-02.