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Geant4/examples/extended/medical/fanoCavity2/src/SteppingAction.cc

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 26 /// \file medical/fanoCavity2/src/SteppingAction.cc
 27 /// \brief Implementation of the SteppingAction class
 28 //
 29 //
 30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32 
 33 #include "SteppingAction.hh"
 34 
 35 #include "DetectorConstruction.hh"
 36 #include "HistoManager.hh"
 37 #include "Run.hh"
 38 #include "TrackingAction.hh"
 39 
 40 #include "G4Gamma.hh"
 41 #include "G4RunManager.hh"
 42 #include "G4SteppingManager.hh"
 43 #include "G4UnitsTable.hh"
 44 
 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 46 
 47 SteppingAction::SteppingAction(DetectorConstruction* det, TrackingAction* TrAct)
 48   : fDetector(det), fTrackAction(TrAct), fWall(0), fCavity(0)
 49 {
 50   first = true;
 51   fTrackSegm = 0.;
 52   fDirectionIn = G4ThreeVector(0., 0., 0.);
 53 }
 54 
 55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 56 
 57 SteppingAction::~SteppingAction() {}
 58 
 59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 60 
 61 void SteppingAction::UserSteppingAction(const G4Step* step)
 62 {
 63   // get fDetector pointers
 64   if (first) {
 65     fWall = fDetector->GetWall();
 66     fCavity = fDetector->GetCavity();
 67     first = false;
 68   }
 69 
 70   Run* run = static_cast<Run*>(G4RunManager::GetRunManager()->GetNonConstCurrentRun());
 71 
 72   // histograms
 73   G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
 74 
 75   // get volume
 76   //
 77   G4StepPoint* point1 = step->GetPreStepPoint();
 78   G4VPhysicalVolume* volume = point1->GetTouchableHandle()->GetVolume();
 79 
 80   // count processes
 81   //
 82   G4StepPoint* point2 = step->GetPostStepPoint();
 83   const G4VProcess* process = point2->GetProcessDefinedStep();
 84   if (process) run->CountProcesses(process->GetProcessName());
 85 
 86   // energy deposit in fCavity
 87   //
 88   if (volume == fCavity) {
 89     G4double edep = step->GetTotalEnergyDeposit();
 90     if (edep > 0.) fTrackAction->AddEdepCavity(edep);
 91   }
 92 
 93   // keep only charged particles
 94   //
 95   if (step->GetTrack()->GetDefinition() == G4Gamma::Gamma()) return;
 96 
 97   // step size of charged particles
 98   //
 99   G4int id;
100   G4double steplen = step->GetStepLength();
101   if (volume == fWall) {
102     run->StepInWall(steplen);
103     id = 9;
104   }
105   else {
106     run->StepInCavity(steplen);
107     id = 10;
108   }
109   analysisManager->FillH1(id, steplen);
110 
111   // last step before hitting the fCavity
112   //
113   if ((volume == fWall) && (point2->GetStepStatus() == fGeomBoundary)) {
114     fDirectionIn = point1->GetMomentumDirection();
115   }
116 
117   // keep only charged particles within fCavity
118   //
119   if (volume == fWall) return;
120 
121   G4double ekin1 = point1->GetKineticEnergy();
122   G4double ekin2 = point2->GetKineticEnergy();
123 
124   // first step in cavity
125   //
126   if (point1->GetStepStatus() == fGeomBoundary) {
127     fTrackSegm = 0.;
128     G4ThreeVector vertex = step->GetTrack()->GetVertexPosition();
129     analysisManager->FillH1(4, vertex.z());
130     run->FlowInCavity(0, ekin1);
131     analysisManager->FillH1(5, ekin1);
132     if (steplen > 0.) {
133       G4ThreeVector directionOut = (point2->GetPosition() - point1->GetPosition()).unit();
134       G4ThreeVector normal =
135         point1->GetTouchableHandle()->GetSolid()->SurfaceNormal(point1->GetPosition());
136       analysisManager->FillH1(6, std::acos(-fDirectionIn * normal));
137       analysisManager->FillH1(7, std::acos(-directionOut * normal));
138     }
139   }
140 
141   // within cavity
142   //
143   if (step->GetTrack()->GetCurrentStepNumber() == 1) fTrackSegm = 0.;
144   fTrackSegm += steplen;
145   if (ekin2 <= 0.) {
146     run->AddTrakCavity(fTrackSegm);
147     analysisManager->FillH1(8, fTrackSegm);
148   }
149 
150   // exit cavity
151   //
152   if (point2->GetStepStatus() == fGeomBoundary) {
153     run->FlowInCavity(1, ekin2);
154     run->AddTrakCavity(fTrackSegm);
155     analysisManager->FillH1(8, fTrackSegm);
156   }
157 }
158 
159 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
160