Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/extended/field/field05/src/F05SteppingAction.cc

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 26 //
 27 /// \file field/field05/src/F05SteppingAction.cc
 28 /// \brief Implementation of the F05SteppingAction class
 29 //
 30 
 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 33 
 34 #include "F05SteppingAction.hh"
 35 
 36 #include "G4ProcessTable.hh"
 37 #include "G4Step.hh"
 38 #include "G4SystemOfUnits.hh"
 39 #include "G4Track.hh"
 40 
 41 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 42 
 43 void F05SteppingAction::UserSteppingAction(const G4Step* aStep)
 44 {
 45   G4String processName = aStep->GetPostStepPoint()->GetProcessDefinedStep()->GetProcessName();
 46 
 47   if (processName != "DecayWithSpin") {
 48     G4Track* aTrack = aStep->GetTrack();
 49 
 50     G4String particleName = aStep->GetTrack()->GetDefinition()->GetParticleName();
 51 
 52     G4ThreeVector polDir = aTrack->GetPolarization();
 53     G4ThreeVector momDir = aTrack->GetMomentumDirection();
 54 
 55     if (particleName == "mu+") {
 56       if (momDir * polDir < (1. - 1.E-7)) {
 57         G4double cos_theta = momDir * polDir;
 58         G4double gTime = aTrack->GetGlobalTime();
 59 
 60         G4cout << " *** ERROR - WARNING *** " << G4endl;
 61         G4cout << "processName: " << processName << G4endl;
 62         G4cout << "particleName " << particleName << G4endl;
 63         G4cout << "Global Time: " << gTime / ns << "nsec" << G4endl;
 64         G4cout << "Angle between spin and momentum:" << cos_theta << G4endl;
 65         G4Exception("SteppingAction::UserSteppingAction", "Error", FatalException,
 66                     "Angle between spin and momentum too large");
 67       }
 68     }
 69   }
 70 }
 71