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25 //
26 /// \file electromagnetic/TestEm15/src/Steppin
27 /// \brief Implementation of the SteppingActio
28 //
29 //
30 //....oooOO0OOooo........oooOO0OOooo........oo
31 //....oooOO0OOooo........oooOO0OOooo........oo
32
33 #include "SteppingAction.hh"
34
35 #include "DetectorConstruction.hh"
36 #include "HistoManager.hh"
37 #include "RunAction.hh"
38
39 #include "G4ParticleTypes.hh"
40 #include "G4RunManager.hh"
41
42 #include <G4RotationMatrix.hh>
43 #include <G4ThreeVector.hh>
44
45 //....oooOO0OOooo........oooOO0OOooo........oo
46
47 SteppingAction::SteppingAction(DetectorConstru
48 : G4UserSteppingAction(), fDetector(det), fR
49 {}
50
51 //....oooOO0OOooo........oooOO0OOooo........oo
52
53 SteppingAction::~SteppingAction() {}
54
55 //....oooOO0OOooo........oooOO0OOooo........oo
56
57 void SteppingAction::UserSteppingAction(const
58 {
59 G4StepPoint* prePoint = aStep->GetPreStepPoi
60
61 // if World --> return
62 if (prePoint->GetTouchableHandle()->GetVolum
63
64 // here we enter in the absorber Box
65 // tag the event to be killed anyway after t
66 //
67 G4RunManager::GetRunManager()->AbortEvent();
68
69 // count processes and keep only Multiple Sc
70 //
71 G4StepPoint* endPoint = aStep->GetPostStepPo
72 G4String procName = endPoint->GetProcessDefi
73 fRunAction->CountProcesses(procName);
74
75 if (procName == "msc" || procName == "muMsc"
76 // below, only multiple Scattering happens
77 //
78 G4ThreeVector position = endPoint->GetPosi
79 G4ThreeVector direction = endPoint->GetMom
80
81 G4double truePathLength = aStep->GetStepLe
82 G4double geomPathLength = position.x() + 0
83 G4double ratio = geomPathLength / truePath
84 fRunAction->SumPathLength(truePathLength,
85 G4AnalysisManager* analysisManager = G4Ana
86 analysisManager->FillH1(1, truePathLength)
87 analysisManager->FillH1(2, geomPathLength)
88 analysisManager->FillH1(3, ratio);
89
90 G4double yend = position.y(), zend = posit
91 G4double lateralDisplacement = std::sqrt(y
92 fRunAction->SumLateralDisplacement(lateral
93 analysisManager->FillH1(4, lateralDisplace
94
95 G4double psi = std::atan(lateralDisplaceme
96 fRunAction->SumPsi(psi);
97 analysisManager->FillH1(5, psi);
98
99 G4double xdir = direction.x(), ydir = dire
100 G4double tetaPlane = std::atan2(ydir, xdir
101 fRunAction->SumTetaPlane(tetaPlane);
102 analysisManager->FillH1(6, tetaPlane);
103 tetaPlane = std::atan2(zdir, xdir);
104 fRunAction->SumTetaPlane(tetaPlane);
105 analysisManager->FillH1(6, tetaPlane);
106
107 G4double phiPos = std::atan2(zend, yend);
108 analysisManager->FillH1(7, phiPos);
109 G4double phiDir = std::atan2(zdir, ydir);
110 analysisManager->FillH1(8, phiDir);
111
112 G4double phiCorrel = 0.;
113 if (lateralDisplacement > 0.) phiCorrel =
114 fRunAction->SumPhiCorrel(phiCorrel);
115 analysisManager->FillH1(9, phiCorrel);
116 }
117 else if (procName == "conv" || procName == "
118 // gamma conversion
119
120 G4StepPoint* PrePoint = aStep->GetPreStepP
121 G4double EGamma = PrePoint->GetTotalEnergy
122 G4ThreeVector PGamma = PrePoint->GetMoment
123 G4ThreeVector PolaGamma = PrePoint->GetPol
124
125 G4double Eplus = -1;
126 G4ThreeVector Pplus, Pminus, Precoil;
127
128 const G4TrackVector* secondary = fpSteppin
129
130 const size_t Nsecondaries = (*secondary).s
131
132 // No conversion , E < threshold
133 if (Nsecondaries == 0) return;
134
135 for (size_t lp = 0; lp < std::min(Nseconda
136 if (((*secondary)[lp]->GetDefinition() =
137 || ((*secondary)[lp]->GetDefinition(
138 {
139 Pminus = (*secondary)[lp]->GetMomentum
140 }
141 if (((*secondary)[lp]->GetDefinition() =
142 || ((*secondary)[lp]->GetDefinition(
143 {
144 Eplus = (*secondary)[lp]->GetTotalEner
145 Pplus = (*secondary)[lp]->GetMomentum(
146 }
147 }
148
149 if (Nsecondaries >= 3) {
150 Precoil = (*secondary)[2]->GetMomentum()
151 }
152
153 G4AnalysisManager* analysisManager = G4Ana
154
155 // Fill Histograms
156
157 G4ThreeVector z = PGamma.unit(); // gamma
158 G4ThreeVector x(1., 0., 0.);
159
160 // pola perpendicular to direction
161
162 if (PolaGamma.mag() != 0.0) {
163 x = PolaGamma.unit();
164 }
165 else { // Pola = 0 case
166 x = z.orthogonal().unit();
167 }
168
169 G4ThreeVector y = z;
170 y = y.cross(x);
171
172 G4RotationMatrix GtoW(x, y, z); // from
173 G4RotationMatrix WtoG = inverseOf(GtoW);
174
175 G4double angleE = Pplus.angle(Pminus) * EG
176 analysisManager->FillH1(10, angleE);
177
178 if (Nsecondaries >= 3) {
179 // recoil returned
180 analysisManager->FillH1(11, std::log10(P
181 analysisManager->FillH1(12, Precoil.tran
182 }
183 G4double phiPlus = Pplus.transform(WtoG).p
184 G4double phiMinus = Pminus.transform(WtoG)
185 analysisManager->FillH1(13, phiPlus);
186 analysisManager->FillH1(14, std::cos(phiPl
187 analysisManager->FillH1(15, Eplus / EGamma
188
189 G4double phiPola = PolaGamma.transform(Wto
190 analysisManager->FillH1(16, phiPola);
191 }
192 }
193
194 //....oooOO0OOooo........oooOO0OOooo........oo
195