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25 // 25 //
26 // 26 //
>> 27 // $Id$
27 // ------------------------------------------- 28 // ------------------------------------------------------------
28 // GEANT 4 class implementation file 29 // GEANT 4 class implementation file
29 // CERN Geneva Switzerland 30 // CERN Geneva Switzerland
30 // 31 //
31 // 32 //
32 // ------------ GammaRayTelPrimaryGenerat 33 // ------------ GammaRayTelPrimaryGeneratorAction ------
33 // by G.Santin, F.Longo & R.Giannit 34 // by G.Santin, F.Longo & R.Giannitrapani (13 nov 2000)
34 // 35 //
35 // ******************************************* 36 // ************************************************************
36 37
>> 38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 39 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 40
37 #include "G4RunManager.hh" 41 #include "G4RunManager.hh"
38 #include "GammaRayTelPrimaryGeneratorAction.hh 42 #include "GammaRayTelPrimaryGeneratorAction.hh"
39 43
40 #include "GammaRayTelDetectorConstruction.hh" 44 #include "GammaRayTelDetectorConstruction.hh"
41 #include "GammaRayTelPrimaryGeneratorMessenger 45 #include "GammaRayTelPrimaryGeneratorMessenger.hh"
42 46
43 #include "G4PhysicalConstants.hh" 47 #include "G4PhysicalConstants.hh"
44 #include "G4SystemOfUnits.hh" 48 #include "G4SystemOfUnits.hh"
45 #include "G4Event.hh" 49 #include "G4Event.hh"
46 #include "G4ParticleGun.hh" 50 #include "G4ParticleGun.hh"
47 #include "G4GeneralParticleSource.hh" 51 #include "G4GeneralParticleSource.hh"
48 #include "G4ParticleTable.hh" 52 #include "G4ParticleTable.hh"
49 #include "G4ParticleDefinition.hh" 53 #include "G4ParticleDefinition.hh"
50 #include "Randomize.hh" 54 #include "Randomize.hh"
51 55
52 //....oooOO0OOooo........oooOO0OOooo........oo 56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
53 57
54 GammaRayTelPrimaryGeneratorAction::GammaRayTel << 58 GammaRayTelPrimaryGeneratorAction::GammaRayTelPrimaryGeneratorAction()
55 detector = static_cast<const GammaRayTelDe << 59 :rndmFlag("off"),nSourceType(0),nSpectrumType(0)
56 << 60 {
57 // create a messenger for this class << 61 G4RunManager* runManager = G4RunManager::GetRunManager();
58 << 62 GammaRayTelDetector =
59 gunMessenger = new GammaRayTelPrimaryGener << 63 (GammaRayTelDetectorConstruction*)(runManager->GetUserDetectorConstruction());
60 << 64
61 constexpr auto NUMBER_OF_PARTICLES{1}; << 65
62 particleGun = new G4ParticleGun(NUMBER_OF_ << 66 //create a messenger for this class
63 << 67
64 // default particle kinematic << 68 gunMessenger = new GammaRayTelPrimaryGeneratorMessenger(this);
65 << 69
66 auto *particleTable = G4ParticleTable::Get << 70 G4int n_particle = 1;
67 auto *particle = particleTable->FindPartic << 71
68 particleGun->SetParticleDefinition(particl << 72 particleGun = new G4ParticleGun(n_particle);
69 particleGun->SetParticleMomentumDirection( << 73 // default particle kinematic
70 << 74
71 constexpr auto PARTICLE_ENERGY{30. * MeV}; << 75 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
72 particleGun->SetParticleEnergy(PARTICLE_EN << 76 G4String particleName;
73 << 77 G4ParticleDefinition* particle
74 auto position = 0.5 * (detector->GetWorldS << 78 = particleTable->FindParticle(particleName="e-");
75 particleGun->SetParticlePosition(G4ThreeVe << 79 particleGun->SetParticleDefinition(particle);
76 particleSource = new G4GeneralParticleSour << 80 particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.));
>> 81 particleGun->SetParticleEnergy(30.*MeV);
>> 82 G4double position = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
>> 83 particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
>> 84 particleSource = new G4GeneralParticleSource();
>> 85
77 } 86 }
78 87
79 //....oooOO0OOooo........oooOO0OOooo........oo 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80 89
81 GammaRayTelPrimaryGeneratorAction::~GammaRayTe << 90 GammaRayTelPrimaryGeneratorAction::~GammaRayTelPrimaryGeneratorAction()
>> 91 {
>> 92 if (sourceGun)
82 delete particleGun; 93 delete particleGun;
>> 94 else
83 delete particleSource; 95 delete particleSource;
84 delete gunMessenger; << 96
>> 97 delete gunMessenger;
85 } 98 }
86 99
87 //....oooOO0OOooo........oooOO0OOooo........oo 100 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88 101
89 void GammaRayTelPrimaryGeneratorAction::Genera << 102 void GammaRayTelPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
90 if (sourceGun) { << 103 {
91 G4cout << "Using G4ParticleGun... " << << 104 if (sourceGun)
92 << 105 {
93 // this function is called at the begi << 106
94 // << 107 //this function is called at the begining of event
95 G4double x0 = 0. * cm; << 108 //
96 G4double y0 = 0. * cm; << 109 G4double z0 = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
97 G4double z0 = 0.5 * (detector->GetWorl << 110 G4double x0 = 0.*cm, y0 = 0.*cm;
98 << 111
99 G4ThreeVector pos0; << 112 G4ThreeVector pos0;
100 auto vertex0 = G4ThreeVector(x0, y0, z << 113 G4ThreeVector dir0;
101 auto momentumDirection0 = G4ThreeVecto << 114 G4ThreeVector vertex0 = G4ThreeVector(x0,y0,z0);
102 << 115
103 G4double theta; << 116 dir0 = G4ThreeVector(0.,0.,-1.);
104 G4double phi; << 117
105 G4double y = 0.; << 118 G4double theta, phi, y, f;
106 G4double f = 0.; << 119 G4double theta0=0.;
107 G4double theta0 = 0.; << 120 G4double phi0=0.;
108 G4double phi0 = 0.; << 121
109 << 122 switch(nSourceType) {
110 switch (sourceType) { << 123 case 0:
111 case 0: << 124 particleGun->SetParticlePosition(vertex0);
112 particleGun->SetParticlePosition(v << 125 particleGun->SetParticleMomentumDirection(dir0);
113 particleGun->SetParticleMomentumDi << 126 break;
114 break; << 127 case 1:
115 case 1: << 128 // GS: Generate random position on the 4PIsphere to create a unif. distrib.
116 // GS: Generate random position on << 129 // GS: on the sphere
117 // GS: on the sphere << 130 phi = G4UniformRand() * twopi;
118 phi = G4UniformRand() * twopi; << 131 do {
119 do { << 132 y = G4UniformRand()*1.0;
120 y = G4UniformRand() * 1.0; << 133 theta = G4UniformRand() * pi;
121 theta = G4UniformRand() * pi; << 134 f = std::sin(theta);
122 f = std::sin(theta); << 135 } while (y > f);
123 } while (y > f); << 136 vertex0 = G4ThreeVector(1.,0.,0.);
124 vertex0 = G4ThreeVector(1., 0., 0. << 137 vertex0.setMag(dVertexRadius);
125 vertex0.setMag(vertexRadius); << 138 vertex0.setTheta(theta);
126 vertex0.setTheta(theta); << 139 vertex0.setPhi(phi);
127 vertex0.setPhi(phi); << 140 particleGun->SetParticlePosition(vertex0);
128 particleGun->SetParticlePosition(v << 141
129 << 142 dir0 = G4ThreeVector(1.,0.,0.);
130 momentumDirection0 = G4ThreeVector << 143 do {
131 << 144 phi = G4UniformRand() * twopi;
132 do { << 145 do {
133 phi = G4UniformRand() * twopi; << 146 y = G4UniformRand()*1.0;
134 do { << 147 theta = G4UniformRand() * pi;
135 y = G4UniformRand() * 1.0; << 148 f = std::sin(theta);
136 theta = G4UniformRand() * << 149 } while (y > f);
137 f = std::sin(theta); << 150 dir0.setPhi(phi);
138 } while (y > f); << 151 dir0.setTheta(theta);
139 momentumDirection0.setPhi(phi) << 152 } while (vertex0.dot(dir0) >= -0.7 * vertex0.mag());
140 momentumDirection0.setTheta(th << 153 particleGun->SetParticleMomentumDirection((G4ParticleMomentum)dir0);
141 } while (vertex0.dot(momentumDirec << 154
142 << 155 break;
143 particleGun->SetParticleMomentumDi << 156 case 2:
144 << 157 // GS: Generate random position on the upper semi-sphere z>0 to create a unif. distrib.
145 break; << 158 // GS: on a plane
146 case 2: << 159 phi = G4UniformRand() * twopi;
147 // GS: Generate random position on << 160 do {
148 // GS: on a plane << 161 y = G4UniformRand()*1.0;
149 phi = G4UniformRand() * twopi; << 162 theta = G4UniformRand() * halfpi;
150 << 163 f = std::sin(theta) * std::cos(theta);
151 do { << 164 } while (y > f);
152 y = G4UniformRand() * 1.0; << 165 vertex0 = G4ThreeVector(1.,0.,0.);
153 theta = G4UniformRand() * half << 166
154 f = std::sin(theta) * std::cos << 167 G4double xy = GammaRayTelDetector->GetWorldSizeXY();
155 } while (y > f); << 168 G4double z = GammaRayTelDetector->GetWorldSizeZ();
156 << 169
157 vertex0 = G4ThreeVector(1., 0., 0. << 170 if (dVertexRadius > xy*0.5)
158 << 171 {
159 auto xy = detector->GetWorldSizeXY << 172 G4cout << "vertexRadius too big " << G4endl;
160 auto z = detector->GetWorldSizeZ() << 173 G4cout << "vertexRadius setted to " << xy*0.45 << G4endl;
161 << 174 dVertexRadius = xy*0.45;
162 if (vertexRadius > xy * 0.5) { << 175 }
163 G4cout << "vertexRadius too bi << 176
164 G4cout << "vertexRadius set to << 177 if (dVertexRadius > z*0.5)
165 vertexRadius = xy * 0.45; << 178 {
166 } << 179 G4cout << "vertexRadius too high " << G4endl;
167 << 180 G4cout << "vertexRadius setted to " << z*0.45 << G4endl;
168 if (vertexRadius > z * 0.5) { << 181 dVertexRadius = z*0.45;
169 G4cout << "vertexRadius too hi << 182 }
170 G4cout << "vertexRadius set to << 183
171 vertexRadius = z * 0.45; << 184
172 } << 185 vertex0.setMag(dVertexRadius);
173 << 186 vertex0.setTheta(theta);
174 vertex0.setMag(vertexRadius); << 187 vertex0.setPhi(phi);
175 vertex0.setTheta(theta); << 188
176 vertex0.setPhi(phi); << 189 // GS: Get the user defined direction for the primaries and
177 << 190 // GS: Rotate the random position according to the user defined direction for the particle
178 // GS: Get the user defined direct << 191
179 // GS: Rotate the random position << 192 dir0 = particleGun->GetParticleMomentumDirection();
180 << 193 if (dir0.mag() > 0.001)
181 momentumDirection0 = particleGun-> << 194 {
182 if (momentumDirection0.mag() > 0.0 << 195 theta0 = dir0.theta();
183 theta0 = momentumDirection0.th << 196 phi0 = dir0.phi();
184 phi0 = momentumDirection0.phi( << 197 }
185 } << 198
186 << 199 if (theta0!=0.)
187 if (theta0 != 0.) { << 200 {
188 G4ThreeVector rotationAxis(1., << 201 G4ThreeVector rotationAxis(1.,0.,0.);
189 rotationAxis.setPhi(phi0 + hal << 202 rotationAxis.setPhi(phi0+halfpi);
190 vertex0.rotate(theta0 + pi, ro << 203 vertex0.rotate(theta0+pi,rotationAxis);
191 } << 204 }
192 particleGun->SetParticlePosition(v << 205 particleGun->SetParticlePosition(vertex0);
193 break; << 206 break;
194 } << 207 }
195 << 208
196 constexpr auto INITIAL_PARTICLE_ENERGY << 209
197 G4double particleEnergy = INITIAL_PART << 210 G4double pEnergy;
198 << 211
199 switch (spectrumType) { << 212 switch(nSpectrumType) {
200 case 0: // Uniform energy (1 GeV - 10 << 213 case 0:
201 y = G4UniformRand(); << 214 break;
202 particleEnergy = y * 9.0 * GeV + 1 << 215 case 1:
203 G4cout << "Particle energy: " << p << 216 break;
204 break; << 217 case 2:
205 case 1: // Logarithmic energy << 218 do {
206 y = G4UniformRand(); << 219 y = G4UniformRand()*100000.0;
207 particleEnergy = std::pow(10, y) * << 220 pEnergy = G4UniformRand() * 10. * GeV;
208 G4cout << "Particle energy: " << p << 221 f = std::pow(pEnergy * (1/GeV), -4.);
209 break; << 222 } while (y > f);
210 case 2: // Power law (-4) << 223
211 do { << 224 particleGun->SetParticleEnergy(pEnergy);
212 y = G4UniformRand() * 100000.0 << 225
213 particleEnergy = G4UniformRand << 226 break;
214 f = std::pow(particleEnergy * << 227 case 3:
215 } while (y > f); << 228 break;
216 // particleGun->SetParticleEnergy( << 229 }
217 break; << 230
218 case 3: // Monochromatic << 231 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 } 232 }
>> 233 else
>> 234 {
>> 235 particleSource->GeneratePrimaryVertex(anEvent);
>> 236 }
>> 237
230 } 238 }
>> 239
>> 240 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 241
>> 242
>> 243
>> 244
>> 245
>> 246
>> 247
>> 248
231 249