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26 // 26 //
>> 27 // $Id: GammaRayTelPrimaryGeneratorAction.cc,v 1.11 2007/11/09 16:33:34 flongo Exp $
>> 28 // GEANT4 tag $Name: geant4-09-02 $
27 // ------------------------------------------- 29 // ------------------------------------------------------------
28 // GEANT 4 class implementation file 30 // GEANT 4 class implementation file
29 // CERN Geneva Switzerland 31 // CERN Geneva Switzerland
30 // 32 //
31 // 33 //
32 // ------------ GammaRayTelPrimaryGenerat 34 // ------------ GammaRayTelPrimaryGeneratorAction ------
33 // by G.Santin, F.Longo & R.Giannit 35 // by G.Santin, F.Longo & R.Giannitrapani (13 nov 2000)
34 // 36 //
35 // ******************************************* 37 // ************************************************************
36 38
>> 39 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 40 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 41
37 #include "G4RunManager.hh" 42 #include "G4RunManager.hh"
38 #include "GammaRayTelPrimaryGeneratorAction.hh 43 #include "GammaRayTelPrimaryGeneratorAction.hh"
39 44
40 #include "GammaRayTelDetectorConstruction.hh" 45 #include "GammaRayTelDetectorConstruction.hh"
41 #include "GammaRayTelPrimaryGeneratorMessenger 46 #include "GammaRayTelPrimaryGeneratorMessenger.hh"
42 47
43 #include "G4PhysicalConstants.hh" <<
44 #include "G4SystemOfUnits.hh" <<
45 #include "G4Event.hh" 48 #include "G4Event.hh"
46 #include "G4ParticleGun.hh" 49 #include "G4ParticleGun.hh"
47 #include "G4GeneralParticleSource.hh" 50 #include "G4GeneralParticleSource.hh"
48 #include "G4ParticleTable.hh" 51 #include "G4ParticleTable.hh"
49 #include "G4ParticleDefinition.hh" 52 #include "G4ParticleDefinition.hh"
50 #include "Randomize.hh" 53 #include "Randomize.hh"
51 54
52 //....oooOO0OOooo........oooOO0OOooo........oo 55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
53 56
54 GammaRayTelPrimaryGeneratorAction::GammaRayTel << 57 GammaRayTelPrimaryGeneratorAction::GammaRayTelPrimaryGeneratorAction()
55 detector = static_cast<const GammaRayTelDe << 58 :rndmFlag("off"),nSourceType(0),nSpectrumType(0)
56 << 59 {
57 // create a messenger for this class << 60 G4RunManager* runManager = G4RunManager::GetRunManager();
58 << 61 GammaRayTelDetector =
59 gunMessenger = new GammaRayTelPrimaryGener << 62 (GammaRayTelDetectorConstruction*)(runManager->GetUserDetectorConstruction());
60 << 63
61 constexpr auto NUMBER_OF_PARTICLES{1}; << 64
62 particleGun = new G4ParticleGun(NUMBER_OF_ << 65 //create a messenger for this class
63 << 66
64 // default particle kinematic << 67 gunMessenger = new GammaRayTelPrimaryGeneratorMessenger(this);
65 << 68
66 auto *particleTable = G4ParticleTable::Get << 69 G4int n_particle = 1;
67 auto *particle = particleTable->FindPartic << 70
68 particleGun->SetParticleDefinition(particl << 71 particleGun = new G4ParticleGun(n_particle);
69 particleGun->SetParticleMomentumDirection( << 72 // default particle kinematic
70 << 73
71 constexpr auto PARTICLE_ENERGY{30. * MeV}; << 74 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
72 particleGun->SetParticleEnergy(PARTICLE_EN << 75 G4String particleName;
73 << 76 G4ParticleDefinition* particle
74 auto position = 0.5 * (detector->GetWorldS << 77 = particleTable->FindParticle(particleName="e-");
75 particleGun->SetParticlePosition(G4ThreeVe << 78 particleGun->SetParticleDefinition(particle);
76 particleSource = new G4GeneralParticleSour << 79 particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.));
>> 80 particleGun->SetParticleEnergy(30.*MeV);
>> 81 G4double position = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
>> 82 particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
>> 83 particleSource = new G4GeneralParticleSource();
>> 84
77 } 85 }
78 86
79 //....oooOO0OOooo........oooOO0OOooo........oo 87 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80 88
81 GammaRayTelPrimaryGeneratorAction::~GammaRayTe << 89 GammaRayTelPrimaryGeneratorAction::~GammaRayTelPrimaryGeneratorAction()
>> 90 {
>> 91 if (sourceGun)
82 delete particleGun; 92 delete particleGun;
>> 93 else
83 delete particleSource; 94 delete particleSource;
84 delete gunMessenger; << 95
>> 96 delete gunMessenger;
85 } 97 }
86 98
87 //....oooOO0OOooo........oooOO0OOooo........oo 99 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88 100
89 void GammaRayTelPrimaryGeneratorAction::Genera << 101 void GammaRayTelPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
90 if (sourceGun) { << 102 {
91 G4cout << "Using G4ParticleGun... " << << 103 if (sourceGun)
92 << 104 {
93 // this function is called at the begi << 105
94 // << 106 //this function is called at the begining of event
95 G4double x0 = 0. * cm; << 107 //
96 G4double y0 = 0. * cm; << 108 G4double z0 = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
97 G4double z0 = 0.5 * (detector->GetWorl << 109 G4double x0 = 0.*cm, y0 = 0.*cm;
98 << 110
99 G4ThreeVector pos0; << 111 G4ThreeVector pos0;
100 auto vertex0 = G4ThreeVector(x0, y0, z << 112 G4ThreeVector dir0;
101 auto momentumDirection0 = G4ThreeVecto << 113 G4ThreeVector vertex0 = G4ThreeVector(x0,y0,z0);
102 << 114
103 G4double theta; << 115 dir0 = G4ThreeVector(0.,0.,-1.);
104 G4double phi; << 116
105 G4double y = 0.; << 117 G4double theta, phi, y, f;
106 G4double f = 0.; << 118 G4double theta0=0.;
107 G4double theta0 = 0.; << 119 G4double phi0=0.;
108 G4double phi0 = 0.; << 120
109 << 121 switch(nSourceType) {
110 switch (sourceType) { << 122 case 0:
111 case 0: << 123 particleGun->SetParticlePosition(vertex0);
112 particleGun->SetParticlePosition(v << 124 particleGun->SetParticleMomentumDirection(dir0);
113 particleGun->SetParticleMomentumDi << 125 break;
114 break; << 126 case 1:
115 case 1: << 127 // GS: Generate random position on the 4PIsphere to create a unif. distrib.
116 // GS: Generate random position on << 128 // GS: on the sphere
117 // GS: on the sphere << 129 phi = G4UniformRand() * twopi;
118 phi = G4UniformRand() * twopi; << 130 do {
119 do { << 131 y = G4UniformRand()*1.0;
120 y = G4UniformRand() * 1.0; << 132 theta = G4UniformRand() * pi;
121 theta = G4UniformRand() * pi; << 133 f = std::sin(theta);
122 f = std::sin(theta); << 134 } while (y > f);
123 } while (y > f); << 135 vertex0 = G4ThreeVector(1.,0.,0.);
124 vertex0 = G4ThreeVector(1., 0., 0. << 136 vertex0.setMag(dVertexRadius);
125 vertex0.setMag(vertexRadius); << 137 vertex0.setTheta(theta);
126 vertex0.setTheta(theta); << 138 vertex0.setPhi(phi);
127 vertex0.setPhi(phi); << 139 particleGun->SetParticlePosition(vertex0);
128 particleGun->SetParticlePosition(v << 140
129 << 141 dir0 = G4ThreeVector(1.,0.,0.);
130 momentumDirection0 = G4ThreeVector << 142 do {
131 << 143 phi = G4UniformRand() * twopi;
132 do { << 144 do {
133 phi = G4UniformRand() * twopi; << 145 y = G4UniformRand()*1.0;
134 do { << 146 theta = G4UniformRand() * pi;
135 y = G4UniformRand() * 1.0; << 147 f = std::sin(theta);
136 theta = G4UniformRand() * << 148 } while (y > f);
137 f = std::sin(theta); << 149 dir0.setPhi(phi);
138 } while (y > f); << 150 dir0.setTheta(theta);
139 momentumDirection0.setPhi(phi) << 151 } while (vertex0.dot(dir0) >= -0.7 * vertex0.mag());
140 momentumDirection0.setTheta(th << 152 particleGun->SetParticleMomentumDirection((G4ParticleMomentum)dir0);
141 } while (vertex0.dot(momentumDirec << 153
142 << 154 break;
143 particleGun->SetParticleMomentumDi << 155 case 2:
144 << 156 // GS: Generate random position on the upper semi-sphere z>0 to create a unif. distrib.
145 break; << 157 // GS: on a plane
146 case 2: << 158 phi = G4UniformRand() * twopi;
147 // GS: Generate random position on << 159 do {
148 // GS: on a plane << 160 y = G4UniformRand()*1.0;
149 phi = G4UniformRand() * twopi; << 161 theta = G4UniformRand() * halfpi;
150 << 162 f = std::sin(theta) * std::cos(theta);
151 do { << 163 } while (y > f);
152 y = G4UniformRand() * 1.0; << 164 vertex0 = G4ThreeVector(1.,0.,0.);
153 theta = G4UniformRand() * half << 165
154 f = std::sin(theta) * std::cos << 166 G4double xy = GammaRayTelDetector->GetWorldSizeXY();
155 } while (y > f); << 167 G4double z = GammaRayTelDetector->GetWorldSizeZ();
156 << 168
157 vertex0 = G4ThreeVector(1., 0., 0. << 169 if (dVertexRadius > xy*0.5)
158 << 170 {
159 auto xy = detector->GetWorldSizeXY << 171 G4cout << "vertexRadius too big " << G4endl;
160 auto z = detector->GetWorldSizeZ() << 172 G4cout << "vertexRadius setted to " << xy*0.45 << G4endl;
161 << 173 dVertexRadius = xy*0.45;
162 if (vertexRadius > xy * 0.5) { << 174 }
163 G4cout << "vertexRadius too bi << 175
164 G4cout << "vertexRadius set to << 176 if (dVertexRadius > z*0.5)
165 vertexRadius = xy * 0.45; << 177 {
166 } << 178 G4cout << "vertexRadius too high " << G4endl;
167 << 179 G4cout << "vertexRadius setted to " << z*0.45 << G4endl;
168 if (vertexRadius > z * 0.5) { << 180 dVertexRadius = z*0.45;
169 G4cout << "vertexRadius too hi << 181 }
170 G4cout << "vertexRadius set to << 182
171 vertexRadius = z * 0.45; << 183
172 } << 184 vertex0.setMag(dVertexRadius);
173 << 185 vertex0.setTheta(theta);
174 vertex0.setMag(vertexRadius); << 186 vertex0.setPhi(phi);
175 vertex0.setTheta(theta); << 187
176 vertex0.setPhi(phi); << 188 // GS: Get the user defined direction for the primaries and
177 << 189 // GS: Rotate the random position according to the user defined direction for the particle
178 // GS: Get the user defined direct << 190
179 // GS: Rotate the random position << 191 dir0 = particleGun->GetParticleMomentumDirection();
180 << 192 if (dir0.mag() > 0.001)
181 momentumDirection0 = particleGun-> << 193 {
182 if (momentumDirection0.mag() > 0.0 << 194 theta0 = dir0.theta();
183 theta0 = momentumDirection0.th << 195 phi0 = dir0.phi();
184 phi0 = momentumDirection0.phi( << 196 }
185 } << 197
186 << 198 if (theta0!=0.)
187 if (theta0 != 0.) { << 199 {
188 G4ThreeVector rotationAxis(1., << 200 G4ThreeVector rotationAxis(1.,0.,0.);
189 rotationAxis.setPhi(phi0 + hal << 201 rotationAxis.setPhi(phi0+halfpi);
190 vertex0.rotate(theta0 + pi, ro << 202 vertex0.rotate(theta0+pi,rotationAxis);
191 } << 203 }
192 particleGun->SetParticlePosition(v << 204 particleGun->SetParticlePosition(vertex0);
193 break; << 205 break;
194 } << 206 }
195 << 207
196 constexpr auto INITIAL_PARTICLE_ENERGY << 208
197 G4double particleEnergy = INITIAL_PART << 209 G4double pEnergy;
198 << 210
199 switch (spectrumType) { << 211 switch(nSpectrumType) {
200 case 0: // Uniform energy (1 GeV - 10 << 212 case 0:
201 y = G4UniformRand(); << 213 break;
202 particleEnergy = y * 9.0 * GeV + 1 << 214 case 1:
203 G4cout << "Particle energy: " << p << 215 break;
204 break; << 216 case 2:
205 case 1: // Logarithmic energy << 217 do {
206 y = G4UniformRand(); << 218 y = G4UniformRand()*100000.0;
207 particleEnergy = std::pow(10, y) * << 219 pEnergy = G4UniformRand() * 10. * GeV;
208 G4cout << "Particle energy: " << p << 220 f = std::pow(pEnergy * (1/GeV), -4.);
209 break; << 221 } while (y > f);
210 case 2: // Power law (-4) << 222
211 do { << 223 particleGun->SetParticleEnergy(pEnergy);
212 y = G4UniformRand() * 100000.0 << 224
213 particleEnergy = G4UniformRand << 225 break;
214 f = std::pow(particleEnergy * << 226 case 3:
215 } while (y > f); << 227 break;
216 // particleGun->SetParticleEnergy( << 228 }
217 break; << 229
218 case 3: // Monochromatic << 230 particleGun->GeneratePrimaryVertex(anEvent);
219 particleEnergy = particleGun->GetP <<
220 // 100 MeV; <<
221 G4cout << "Particle energy: " << p <<
222 break; <<
223 } <<
224 particleGun->SetParticleEnergy(particl <<
225 G4cout << "Particle: " << particleGun- <<
226 particleGun->GeneratePrimaryVertex(eve <<
227 } else { <<
228 particleSource->GeneratePrimaryVertex( <<
229 } 231 }
>> 232 else
>> 233 {
>> 234 particleSource->GeneratePrimaryVertex(anEvent);
>> 235 }
>> 236
230 } 237 }
>> 238
>> 239 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 240
>> 241
>> 242
>> 243
>> 244
>> 245
>> 246
>> 247
231 248