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Question Negative Global time 

Keywords: negative global time
Forum: Event and Track Management
Date: 16 May, 2007
From: long <long>

Dear Geant4 experts, in my simulation, primary particles are 
photon about 10MeV which impact on Ti plane target. I tried to record the photon-netron's
information. I found the time got by GetGlobalTime() function has 
negative value. There is no other error during the application running. So what 
does the negative time mean? Is a negative value normal here?
Some neutron's information as follows:
   ParticleName           weight    Time (got by GetGlobalTime())
     neutron               1        4.64081
     neutron               1       -6.09932
     neutron               1       -6.09932
     neutron               1       -4.18302
     neutron               1        3.02317
     neutron               1        6.29287

  Thanks in advance!

long

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