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25 //
26 //
27 //
28 // Author: Alfonso Mantero (Alfonso.Mantero@ge.infn.it)
29 //
30 // History:
31 // -----------
32 // 02 Sep 2003 Alfonso Mantero created
33 //
34 // -------------------------------------------------------------------
35
36 #include "XrayFluoPlanePrimaryGeneratorAction.hh"
37 #include "XrayFluoPlaneDetectorConstruction.hh"
38 #include "XrayFluoPlanePrimaryGeneratorMessenger.hh"
39 #include "XrayFluoRunAction.hh"
40 #include "XrayFluoAnalysisManager.hh"
41 #include "XrayFluoDataSet.hh"
42 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh"
44 #include "G4UnitsTable.hh"
45 #include "G4DataVector.hh"
46 #include "G4Event.hh"
47 #include "G4ParticleGun.hh"
48 #include "G4ParticleTable.hh"
49 #include "G4ParticleDefinition.hh"
50 #include "Randomize.hh"
51
52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
53
54 XrayFluoPlanePrimaryGeneratorAction::XrayFluoPlanePrimaryGeneratorAction(const XrayFluoPlaneDetectorConstruction* XrayFluoDC)
55 :rndmFlag("on"),beam("off"),spectrum("off"),isoVert("off")
56 {
57
58 XrayFluoDetector = XrayFluoDC;
59
60 G4int n_particle = 1;
61 particleGun = new G4ParticleGun(n_particle);
62
63 //create a messenger for this class
64 gunMessenger = new XrayFluoPlanePrimaryGeneratorMessenger(this);
65 runManager = new XrayFluoRunAction();
66
67 // default particle kinematic
68
69 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
70 G4String particleName;
71 G4ParticleDefinition* particle
72 = particleTable->FindParticle(particleName="gamma");
73 particleGun->SetParticleDefinition(particle);
74 particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
75
76
77 particleGun->SetParticleEnergy(10.*keV);
78 G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ());
79 particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
80
81 G4cout << "XrayFluoPlanePrimaryGeneratorAction created UUUUUUUUUUAAAAAAAAAAAAAAAAAAAAAAAaa" << G4endl;
82
83 }
84
85
86 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
87
88 XrayFluoPlanePrimaryGeneratorAction::~XrayFluoPlanePrimaryGeneratorAction()
89 {
90 delete particleGun;
91 delete gunMessenger;
92 delete runManager;
93
94 G4cout << "XrayFluoPlanePrimaryGeneratorAction deleted" << G4endl;
95
96 }
97
98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
99
100 void XrayFluoPlanePrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
101 {
102 //this function is called at the begining of event
103 //
104 G4double z0 = -0.5*(XrayFluoDetector->GetWorldSizeZ());
105 G4double y0 = 0.*m, x0 = 0.*m;
106 G4double dX = 0.5*(XrayFluoDetector->GetWorldSizeXY())-(XrayFluoDetector->GetPlaneSizeXY());
107 if (rndmFlag == "on")
108
109 {y0 = (XrayFluoDetector->GetPlaneSizeXY())*(G4UniformRand()-0.5);
110 x0 = (XrayFluoDetector->GetPlaneSizeXY())*(G4UniformRand()-0.5) + dX;
111 }
112
113 z0 = -1 * dX;
114
115 particleGun->SetParticleMomentumDirection(G4ThreeVector(-1.,0.,1.));
116
117 particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
118
119 //randomize starting point
120 if (beam == "on")
121 {
122 G4double radius = 0.5 * mm;
123 G4double rho = radius*std::sqrt(G4UniformRand());
124 G4double theta = 2*pi*G4UniformRand()*rad;
125 G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ());
126
127 G4double y = rho * std::sin(theta);
128 G4double x = rho * std::cos(theta);
129
130 particleGun->SetParticlePosition(G4ThreeVector(x,y,position));
131 }
132 //shoot particles according to a certain spectrum
133 if (spectrum =="on")
134 {
135 G4String particle = particleGun->GetParticleDefinition()
136 ->GetParticleName();
137 if(particle == "proton"|| particle == "alpha")
138 {
139 G4DataVector* energies = runManager->GetEnergies();
140 G4DataVector* data = runManager->GetData();
141
142 G4double sum = runManager->GetDataSum();
143 G4double partSum = 0;
144 G4int j = 0;
145 G4double random= sum*G4UniformRand();
146 while (partSum<random)
147 {
148 partSum += (*data)[j];
149 j++;
150 }
151
152 particleGun->SetParticleEnergy((*energies)[j]);
153
154 }
155 else if (particle == "gamma")
156 {
157 const XrayFluoDataSet* dataSet = runManager->GetGammaSet();
158
159 G4int i = 0;
160 G4int id = 0;
161 G4double minEnergy = 0. * keV;
162 G4double particleEnergy= 0.;
163 G4double maxEnergy = 10. * keV;
164 G4double energyRange = maxEnergy - minEnergy;
165
166 while ( i == 0)
167 {
168 G4double random = G4UniformRand();
169
170 G4double randomNum = G4UniformRand(); //*5.0E6;
171
172 particleEnergy = (random*energyRange) + minEnergy;
173
174 if ((dataSet->FindValue(particleEnergy,id)) > randomNum)
175 {
176 i = 1;
177
178 }
179 }
180 particleGun->SetParticleEnergy(particleEnergy);
181 }
182 }
183
184 if (isoVert == "on")
185 {
186 G4double rho = 1. *m;
187 //theta in [0;pi/2]
188 G4double theta = (pi/2)*G4UniformRand();
189 //phi in [-pi;pi]
190 G4double phi = (G4UniformRand()*2*pi)- pi;
191 G4double x = rho*std::sin(theta)*std::sin(phi);
192 G4double y = rho*std::sin(theta)*std::cos(phi);
193 G4double z = -(rho*std::cos(theta));
194 particleGun->SetParticlePosition(G4ThreeVector(x,y,z));
195
196 G4double Xdim = XrayFluoDetector->GetPlaneSizeXY();
197 G4double Ydim = XrayFluoDetector->GetPlaneSizeXY();
198
199 G4double Dx = Xdim*(G4UniformRand()-0.5);
200
201 G4double Dy = Ydim*(G4UniformRand()-0.5);
202
203 particleGun->SetParticleMomentumDirection(G4ThreeVector(-x+Dx,-y+Dy,-z));
204
205 }
206 #ifdef G4ANALYSIS_USE
207
208 G4double partEnergy = particleGun->GetParticleEnergy();
209 XrayFluoAnalysisManager* analysis = XrayFluoAnalysisManager::getInstance();
210 analysis->analysePrimaryGenerator(partEnergy/keV);
211
212 #endif
213
214 particleGun->GeneratePrimaryVertex(anEvent);
215 }
216
217 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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