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26 // 26 //
>> 27 // $Id: GammaRayTelPrimaryGeneratorAction.cc 100697 2016-10-31 11:32:35Z gcosmo $
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),sourceGun(false)
56 << 60 {
57 // create a messenger for this class << 61 GammaRayTelDetector = static_cast<const GammaRayTelDetectorConstruction*>
58 << 62 (G4RunManager::GetRunManager()->GetUserDetectorConstruction());
59 gunMessenger = new GammaRayTelPrimaryGener << 63
60 << 64 //create a messenger for this class
61 constexpr auto NUMBER_OF_PARTICLES{1}; << 65
62 particleGun = new G4ParticleGun(NUMBER_OF_ << 66 gunMessenger = new GammaRayTelPrimaryGeneratorMessenger(this);
63 << 67
64 // default particle kinematic << 68 G4int n_particle = 1;
>> 69
>> 70 particleGun = new G4ParticleGun(n_particle);
>> 71 // default particle kinematic
>> 72
>> 73 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
>> 74 G4String particleName;
>> 75 G4ParticleDefinition* particle
>> 76 = particleTable->FindParticle(particleName="e-");
>> 77 particleGun->SetParticleDefinition(particle);
>> 78 particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.));
>> 79 particleGun->SetParticleEnergy(30.*MeV);
>> 80 G4double position = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
>> 81 particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
>> 82 particleSource = new G4GeneralParticleSource();
>> 83
>> 84 }
65 85
66 auto *particleTable = G4ParticleTable::Get << 86 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
67 auto *particle = particleTable->FindPartic <<
68 particleGun->SetParticleDefinition(particl <<
69 particleGun->SetParticleMomentumDirection( <<
70 87
71 constexpr auto PARTICLE_ENERGY{30. * MeV}; << 88 GammaRayTelPrimaryGeneratorAction::~GammaRayTelPrimaryGeneratorAction()
72 particleGun->SetParticleEnergy(PARTICLE_EN << 89 {
>> 90
>> 91 delete particleGun;
>> 92 delete particleSource;
73 93
74 auto position = 0.5 * (detector->GetWorldS << 94 delete gunMessenger;
75 particleGun->SetParticlePosition(G4ThreeVe <<
76 particleSource = new G4GeneralParticleSour <<
77 } 95 }
78 96
79 //....oooOO0OOooo........oooOO0OOooo........oo 97 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80 98
81 GammaRayTelPrimaryGeneratorAction::~GammaRayTe << 99 void GammaRayTelPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
82 delete particleGun; << 100 {
83 delete particleSource; << 101 if (sourceGun)
84 delete gunMessenger; << 102 {
>> 103
>> 104 //this function is called at the begining of event
>> 105 //
>> 106 G4double z0 = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
>> 107 G4double x0 = 0.*cm, y0 = 0.*cm;
>> 108
>> 109 G4ThreeVector pos0;
>> 110 G4ThreeVector dir0;
>> 111 G4ThreeVector vertex0 = G4ThreeVector(x0,y0,z0);
>> 112
>> 113 dir0 = G4ThreeVector(0.,0.,-1.);
>> 114
>> 115 G4double theta, phi, y, f;
>> 116 G4double theta0=0.;
>> 117 G4double phi0=0.;
>> 118
>> 119 switch(nSourceType) {
>> 120 case 0:
>> 121 particleGun->SetParticlePosition(vertex0);
>> 122 particleGun->SetParticleMomentumDirection(dir0);
>> 123 break;
>> 124 case 1:
>> 125 // GS: Generate random position on the 4PIsphere to create a unif. distrib.
>> 126 // GS: on the sphere
>> 127 phi = G4UniformRand() * twopi;
>> 128 do {
>> 129 y = G4UniformRand()*1.0;
>> 130 theta = G4UniformRand() * pi;
>> 131 f = std::sin(theta);
>> 132 } while (y > f);
>> 133 vertex0 = G4ThreeVector(1.,0.,0.);
>> 134 vertex0.setMag(dVertexRadius);
>> 135 vertex0.setTheta(theta);
>> 136 vertex0.setPhi(phi);
>> 137 particleGun->SetParticlePosition(vertex0);
>> 138
>> 139 dir0 = G4ThreeVector(1.,0.,0.);
>> 140 do {
>> 141 phi = G4UniformRand() * twopi;
>> 142 do {
>> 143 y = G4UniformRand()*1.0;
>> 144 theta = G4UniformRand() * pi;
>> 145 f = std::sin(theta);
>> 146 } while (y > f);
>> 147 dir0.setPhi(phi);
>> 148 dir0.setTheta(theta);
>> 149 } while (vertex0.dot(dir0) >= -0.7 * vertex0.mag());
>> 150 particleGun->SetParticleMomentumDirection((G4ParticleMomentum)dir0);
>> 151
>> 152 break;
>> 153 case 2:
>> 154 // GS: Generate random position on the upper semi-sphere z>0 to create a unif. distrib.
>> 155 // GS: on a plane
>> 156 phi = G4UniformRand() * twopi;
>> 157 do {
>> 158 y = G4UniformRand()*1.0;
>> 159 theta = G4UniformRand() * halfpi;
>> 160 f = std::sin(theta) * std::cos(theta);
>> 161 } while (y > f);
>> 162 vertex0 = G4ThreeVector(1.,0.,0.);
>> 163
>> 164 G4double xy = GammaRayTelDetector->GetWorldSizeXY();
>> 165 G4double z = GammaRayTelDetector->GetWorldSizeZ();
>> 166
>> 167 if (dVertexRadius > xy*0.5)
>> 168 {
>> 169 G4cout << "vertexRadius too big " << G4endl;
>> 170 G4cout << "vertexRadius setted to " << xy*0.45 << G4endl;
>> 171 dVertexRadius = xy*0.45;
>> 172 }
>> 173
>> 174 if (dVertexRadius > z*0.5)
>> 175 {
>> 176 G4cout << "vertexRadius too high " << G4endl;
>> 177 G4cout << "vertexRadius setted to " << z*0.45 << G4endl;
>> 178 dVertexRadius = z*0.45;
>> 179 }
>> 180
>> 181
>> 182 vertex0.setMag(dVertexRadius);
>> 183 vertex0.setTheta(theta);
>> 184 vertex0.setPhi(phi);
>> 185
>> 186 // GS: Get the user defined direction for the primaries and
>> 187 // GS: Rotate the random position according to the user defined direction for the particle
>> 188
>> 189 dir0 = particleGun->GetParticleMomentumDirection();
>> 190 if (dir0.mag() > 0.001)
>> 191 {
>> 192 theta0 = dir0.theta();
>> 193 phi0 = dir0.phi();
>> 194 }
>> 195
>> 196 if (theta0!=0.)
>> 197 {
>> 198 G4ThreeVector rotationAxis(1.,0.,0.);
>> 199 rotationAxis.setPhi(phi0+halfpi);
>> 200 vertex0.rotate(theta0+pi,rotationAxis);
>> 201 }
>> 202 particleGun->SetParticlePosition(vertex0);
>> 203 break;
>> 204 }
>> 205
>> 206
>> 207 G4double pEnergy;
>> 208
>> 209 switch(nSpectrumType) {
>> 210 case 0:
>> 211 break;
>> 212 case 1:
>> 213 break;
>> 214 case 2:
>> 215 do {
>> 216 y = G4UniformRand()*100000.0;
>> 217 pEnergy = G4UniformRand() * 10. * GeV;
>> 218 f = std::pow(pEnergy * (1/GeV), -4.);
>> 219 } while (y > f);
>> 220
>> 221 particleGun->SetParticleEnergy(pEnergy);
>> 222
>> 223 break;
>> 224 case 3:
>> 225 break;
>> 226 }
>> 227 G4cout << particleGun->GetParticleDefinition()->GetParticleName() << G4endl;
>> 228 particleGun->GeneratePrimaryVertex(anEvent);
>> 229 }
>> 230 else
>> 231 {
>> 232 particleSource->GeneratePrimaryVertex(anEvent);
>> 233 }
>> 234
85 } 235 }
86 236
87 //....oooOO0OOooo........oooOO0OOooo........oo 237 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88 238
89 void GammaRayTelPrimaryGeneratorAction::Genera << 239
90 if (sourceGun) { << 240
91 G4cout << "Using G4ParticleGun... " << << 241
92 << 242
93 // this function is called at the begi << 243
94 // << 244
95 G4double x0 = 0. * cm; << 245
96 G4double y0 = 0. * cm; <<
97 G4double z0 = 0.5 * (detector->GetWorl <<
98 <<
99 G4ThreeVector pos0; <<
100 auto vertex0 = G4ThreeVector(x0, y0, z <<
101 auto momentumDirection0 = G4ThreeVecto <<
102 <<
103 G4double theta; <<
104 G4double phi; <<
105 G4double y = 0.; <<
106 G4double f = 0.; <<
107 G4double theta0 = 0.; <<
108 G4double phi0 = 0.; <<
109 <<
110 switch (sourceType) { <<
111 case 0: <<
112 particleGun->SetParticlePosition(v <<
113 particleGun->SetParticleMomentumDi <<
114 break; <<
115 case 1: <<
116 // GS: Generate random position on <<
117 // GS: on the sphere <<
118 phi = G4UniformRand() * twopi; <<
119 do { <<
120 y = G4UniformRand() * 1.0; <<
121 theta = G4UniformRand() * pi; <<
122 f = std::sin(theta); <<
123 } while (y > f); <<
124 vertex0 = G4ThreeVector(1., 0., 0. <<
125 vertex0.setMag(vertexRadius); <<
126 vertex0.setTheta(theta); <<
127 vertex0.setPhi(phi); <<
128 particleGun->SetParticlePosition(v <<
129 <<
130 momentumDirection0 = G4ThreeVector <<
131 <<
132 do { <<
133 phi = G4UniformRand() * twopi; <<
134 do { <<
135 y = G4UniformRand() * 1.0; <<
136 theta = G4UniformRand() * <<
137 f = std::sin(theta); <<
138 } while (y > f); <<
139 momentumDirection0.setPhi(phi) <<
140 momentumDirection0.setTheta(th <<
141 } while (vertex0.dot(momentumDirec <<
142 <<
143 particleGun->SetParticleMomentumDi <<
144 <<
145 break; <<
146 case 2: <<
147 // GS: Generate random position on <<
148 // GS: on a plane <<
149 phi = G4UniformRand() * twopi; <<
150 <<
151 do { <<
152 y = G4UniformRand() * 1.0; <<
153 theta = G4UniformRand() * half <<
154 f = std::sin(theta) * std::cos <<
155 } while (y > f); <<
156 <<
157 vertex0 = G4ThreeVector(1., 0., 0. <<
158 <<
159 auto xy = detector->GetWorldSizeXY <<
160 auto z = detector->GetWorldSizeZ() <<
161 <<
162 if (vertexRadius > xy * 0.5) { <<
163 G4cout << "vertexRadius too bi <<
164 G4cout << "vertexRadius set to <<
165 vertexRadius = xy * 0.45; <<
166 } <<
167 <<
168 if (vertexRadius > z * 0.5) { <<
169 G4cout << "vertexRadius too hi <<
170 G4cout << "vertexRadius set to <<
171 vertexRadius = z * 0.45; <<
172 } <<
173 <<
174 vertex0.setMag(vertexRadius); <<
175 vertex0.setTheta(theta); <<
176 vertex0.setPhi(phi); <<
177 <<
178 // GS: Get the user defined direct <<
179 // GS: Rotate the random position <<
180 <<
181 momentumDirection0 = particleGun-> <<
182 if (momentumDirection0.mag() > 0.0 <<
183 theta0 = momentumDirection0.th <<
184 phi0 = momentumDirection0.phi( <<
185 } <<
186 <<
187 if (theta0 != 0.) { <<
188 G4ThreeVector rotationAxis(1., <<
189 rotationAxis.setPhi(phi0 + hal <<
190 vertex0.rotate(theta0 + pi, ro <<
191 } <<
192 particleGun->SetParticlePosition(v <<
193 break; <<
194 } <<
195 <<
196 constexpr auto INITIAL_PARTICLE_ENERGY <<
197 G4double particleEnergy = INITIAL_PART <<
198 <<
199 switch (spectrumType) { <<
200 case 0: // Uniform energy (1 GeV - 10 <<
201 y = G4UniformRand(); <<
202 particleEnergy = y * 9.0 * GeV + 1 <<
203 G4cout << "Particle energy: " << p <<
204 break; <<
205 case 1: // Logarithmic energy <<
206 y = G4UniformRand(); <<
207 particleEnergy = std::pow(10, y) * <<
208 G4cout << "Particle energy: " << p <<
209 break; <<
210 case 2: // Power law (-4) <<
211 do { <<
212 y = G4UniformRand() * 100000.0 <<
213 particleEnergy = G4UniformRand <<
214 f = std::pow(particleEnergy * <<
215 } while (y > f); <<
216 // particleGun->SetParticleEnergy( <<
217 break; <<
218 case 3: // Monochromatic <<
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 } <<
230 } <<
231 246