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25 //
26 /// \file medical/electronScattering/src/TrackingAction.cc
27 /// \brief Implementation of the TrackingAction class
28 //
29 //
30 //
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33
34 #include "TrackingAction.hh"
35
36 #include "DetectorConstruction.hh"
37 #include "HistoManager.hh"
38 #include "Run.hh"
39
40 #include "G4PhysicalConstants.hh"
41 #include "G4RunManager.hh"
42 #include "G4SystemOfUnits.hh"
43 #include "G4Track.hh"
44
45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
46
47 TrackingAction::TrackingAction(DetectorConstruction* DET) : fDetector(DET)
48 {
49 fZend = 0.5 * (fDetector->GetThicknessWorld());
50 }
51
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53
54 void TrackingAction::PreUserTrackingAction(const G4Track*) {}
55
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57
58 void TrackingAction::PostUserTrackingAction(const G4Track* track)
59 {
60 G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
61
62 G4double charge = track->GetDefinition()->GetPDGCharge();
63 G4ThreeVector position = track->GetPosition();
64 G4ThreeVector direction = track->GetMomentumDirection();
65
66 if (charge == 0.0) return;
67 if (position.z() < fZend) return;
68 if (direction.z() <= 0.) return;
69
70 G4double rmin, dr, ds;
71 G4int ih = 1;
72
73 // projected angle at exit
74
75 G4double ux = direction.x(), uy = direction.y(), uz = direction.z();
76 G4double thetax = std::atan(ux / uz);
77 G4double thetay = std::atan(uy / uz);
78 analysisManager->FillH1(ih, thetax);
79 analysisManager->FillH1(ih, thetay);
80
81 // dN/dS at exit
82
83 G4double x = position.x(), y = position.y();
84 G4double r = std::sqrt(x * x + y * y);
85 ih = 2;
86 dr = analysisManager->GetH1Width(ih);
87 rmin = ((int)(r / dr)) * dr;
88 ds = twopi * (rmin + 0.5 * dr) * dr;
89 analysisManager->FillH1(ih, r, 1 / ds);
90
91 // d(N/cost)/dS at exit
92
93 ih = 3;
94 dr = analysisManager->GetH1Width(ih);
95 rmin = ((int)(r / dr)) * dr;
96 ds = twopi * (rmin + 0.5 * dr) * dr;
97 analysisManager->FillH1(ih, r, 1 / (uz * ds));
98
99 // vector of d(N/cost)/dS at exit
100
101 Run* run = static_cast<Run*>(G4RunManager::GetRunManager()->GetNonConstCurrentRun());
102
103 run->SumFluence(r, 1 / uz);
104
105 // space angle at exit : dN/dOmega
106
107 ih = 5;
108 G4double theta = std::acos(uz);
109 if (theta > 0.) {
110 G4double dtheta = analysisManager->GetH1Width(ih);
111 G4double unit = analysisManager->GetH1Unit(ih);
112 if (dtheta > 0.) {
113 G4double weight = unit * unit / (twopi * std::sin(theta) * dtheta);
114 analysisManager->FillH1(ih, theta, weight);
115 }
116 }
117
118 // measured space angle at exit : dN/dOmega_meas
119 //
120 ih = 6;
121 const G4double dist = fDetector->GetZdist_foil_detector();
122 G4double thetam = std::atan(r / dist);
123 if (thetam > 0.) {
124 G4double dtheta = analysisManager->GetH1Width(ih);
125 G4double unit = analysisManager->GetH1Unit(ih);
126 if (dtheta > 0.) {
127 G4double weight = unit * unit / (twopi * std::sin(thetam) * dtheta);
128 analysisManager->FillH1(ih, thetam, weight);
129 }
130 }
131 }
132
133 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
134