ch2/src/SteppingAction.cc

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0025 //
0026 //
0027 /// \file SteppingAction.cc
0028 /// \brief Implementation of the SteppingAction class
0029
0030 #include "SteppingAction.hh"
0031 #include "DetectorConstruction.hh"
0032
0033 #include "G4Step.hh"
0034 #include "G4Event.hh"
0035 #include "G4RunManager.hh"
0036 #include "G4LogicalVolume.hh"
0037
0038 #include "G4AnalysisManager.hh"
0039
0040 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0041
0042 SteppingAction::SteppingAction()
0043 {}
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 void SteppingAction::UserSteppingAction(const G4Step* step)
0048 {
0049
0050     G4String volumeName = step->GetPreStepPoint()->GetTouchableHandle()
0051                             ->GetVolume()->GetName();
0052
0053     //if a particle enters the detector volume
0054     if (step->GetPreStepPoint()-> GetStepStatus()==G4StepStatus::fGeomBoundary&&
0055         (volumeName=="Crystal"||volumeName=="Detector"))
0056     {
0057
0058         //coordinates
0059         G4double x0 = step->GetPreStepPoint()->GetPosition().getX()/CLHEP::mm;
0060         G4double y0 = step->GetPreStepPoint()->GetPosition().getY()/CLHEP::mm;
0061
0062         //angles
0063         G4ThreeVector momentumDirection =
0064             step->GetPreStepPoint()->GetMomentumDirection();
0065         G4double angle_x =
0066             std::atan(momentumDirection.getX()/momentumDirection.getZ());
0067         G4double angle_y =
0068             std::atan(momentumDirection.getY()/momentumDirection.getZ());
0069         if (momentumDirection.getZ() < 0)
0070         {
0071             if (momentumDirection.getX() > 0)
0072             {
0073                 angle_x += CLHEP::pi;
0074             }
0075             else
0076             {
0077                 angle_x -= CLHEP::pi;
0078             }
0079             if (momentumDirection.getY() > 0)
0080             {
0081                 angle_y += CLHEP::pi;
0082             }
0083             else
0084             {
0085                 angle_y -= CLHEP::pi;
0086             }
0087         }
0088
0089         //kinetic energy
0090         G4double ekin = step->GetPreStepPoint()->GetKineticEnergy()/CLHEP::MeV;
0091
0092         //particle name, ID and parentID
0093         G4String particleName =
0094             step->GetTrack()->GetDefinition()->GetParticleName();
0095         G4int particleID = step->GetTrack()->GetTrackID();
0096         G4int parentID = step->GetTrack()->GetParentID();
0097
0098         //event ID
0099         G4int eventID =
0100             G4RunManager::GetRunManager()->GetCurrentEvent()->GetEventID();
0101
0102         //ntuple index
0103         G4int iTuple = 0;
0104         if(volumeName=="Crystal")
0105         {
0106             iTuple = 0;
0107         }
0108         else if(volumeName=="Detector")
0109         {
0110             if(particleName=="gamma")
0111             {
0112                iTuple = 2;
0113             }
0114             else
0115             {
0116                iTuple = 1;
0117             }
0118         }
0119
0120         //saving result to root
0121         G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
0122         analysisManager->FillNtupleIColumn(iTuple,0,eventID);
0123         analysisManager->FillNtupleSColumn(iTuple,1,volumeName);
0124         analysisManager->FillNtupleDColumn(iTuple,2,x0);
0125         analysisManager->FillNtupleDColumn(iTuple,3,y0);
0126         analysisManager->FillNtupleDColumn(iTuple,4,angle_x);
0127         analysisManager->FillNtupleDColumn(iTuple,5,angle_y);
0128         analysisManager->FillNtupleDColumn(iTuple,6,ekin);
0129         analysisManager->FillNtupleSColumn(iTuple,7,particleName);
0130         analysisManager->FillNtupleIColumn(iTuple,8,particleID);
0131         analysisManager->FillNtupleIColumn(iTuple,9,parentID);
0132         analysisManager->AddNtupleRow(iTuple);
0133     }
0134 }
0135
0136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0137
0138 //}