random seed

src/G4System.cc

@@ -4,6 +4,11 @@
 #include <G4NistManager.hh>
 #include <G4String.hh>
 
+#include <G4INCLGeant4Random.hh>
+#include <G4INCLRandomSeedVector.hh>
+
+#include <ctime>
+
 void G4System::init(GeometryDescriptor &CW){
 
   if(CW.isAssigned()){
@@ -19,6 +24,9 @@ void G4System::init(GeometryDescriptor &CW){
 
   bool first_init=true;
 
+  int seed=std::time(NULL) ;
+  CLHEP::HepRandom::setTheSeed(seed); G4Random::setTheSeed(seed);
+
 
   if(runManager == nullptr){
     // Construct the default run manager
@@ -150,6 +158,8 @@ void G4System::run_gui(){
 
 void G4System::run_batch(int nEvents,const std::string& partSpecies, double minEnergy, double maxEnergy){
   check();
+
+
     G4String partSpec = partSpecies;
     G4cout << "running with particle species " << partSpec << G4endl;
     UImanager->ApplyCommand("/run/initialize");