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25 // 22 //
26 // 23 //
>> 24 // $Id: GammaRayTelPrimaryGeneratorAction.cc,v 1.8 2005/06/27 15:27:33 gunter Exp $
>> 25 // GEANT4 tag $Name: geant4-08-00 $
27 // ------------------------------------------- 26 // ------------------------------------------------------------
28 // GEANT 4 class implementation file 27 // GEANT 4 class implementation file
29 // CERN Geneva Switzerland 28 // CERN Geneva Switzerland
30 // 29 //
31 // 30 //
32 // ------------ GammaRayTelPrimaryGenerat 31 // ------------ GammaRayTelPrimaryGeneratorAction ------
33 // by G.Santin, F.Longo & R.Giannit 32 // by G.Santin, F.Longo & R.Giannitrapani (13 nov 2000)
34 // 33 //
35 // ******************************************* 34 // ************************************************************
36 35
>> 36 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 37 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 38
37 #include "G4RunManager.hh" 39 #include "G4RunManager.hh"
38 #include "GammaRayTelPrimaryGeneratorAction.hh 40 #include "GammaRayTelPrimaryGeneratorAction.hh"
39 41
40 #include "GammaRayTelDetectorConstruction.hh" 42 #include "GammaRayTelDetectorConstruction.hh"
41 #include "GammaRayTelPrimaryGeneratorMessenger 43 #include "GammaRayTelPrimaryGeneratorMessenger.hh"
42 44
43 #include "G4PhysicalConstants.hh" <<
44 #include "G4SystemOfUnits.hh" <<
45 #include "G4Event.hh" 45 #include "G4Event.hh"
46 #include "G4ParticleGun.hh" 46 #include "G4ParticleGun.hh"
47 #include "G4GeneralParticleSource.hh" <<
48 #include "G4ParticleTable.hh" 47 #include "G4ParticleTable.hh"
49 #include "G4ParticleDefinition.hh" 48 #include "G4ParticleDefinition.hh"
50 #include "Randomize.hh" 49 #include "Randomize.hh"
51 50
52 //....oooOO0OOooo........oooOO0OOooo........oo 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
53 52
54 GammaRayTelPrimaryGeneratorAction::GammaRayTel << 53 GammaRayTelPrimaryGeneratorAction::GammaRayTelPrimaryGeneratorAction()
55 detector = static_cast<const GammaRayTelDe << 54 :rndmFlag("off"),nSourceType(0),nSpectrumType(0)
56 << 55 {
57 // create a messenger for this class << 56 G4RunManager* runManager = G4RunManager::GetRunManager();
58 << 57 GammaRayTelDetector =
59 gunMessenger = new GammaRayTelPrimaryGener << 58 (GammaRayTelDetectorConstruction*)(runManager->GetUserDetectorConstruction());
>> 59
>> 60 G4int n_particle = 1;
>> 61 particleGun = new G4ParticleGun(n_particle);
>> 62
>> 63 //create a messenger for this class
>> 64 gunMessenger = new GammaRayTelPrimaryGeneratorMessenger(this);
>> 65
>> 66 // default particle kinematic
>> 67
>> 68 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
>> 69 G4String particleName;
>> 70 G4ParticleDefinition* particle
>> 71 = particleTable->FindParticle(particleName="e-");
>> 72 particleGun->SetParticleDefinition(particle);
>> 73 particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.));
>> 74 particleGun->SetParticleEnergy(30.*MeV);
>> 75 G4double position = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
>> 76 particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
>> 77
>> 78 }
60 79
61 constexpr auto NUMBER_OF_PARTICLES{1}; << 80 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
62 particleGun = new G4ParticleGun(NUMBER_OF_ <<
63 81
64 // default particle kinematic << 82 GammaRayTelPrimaryGeneratorAction::~GammaRayTelPrimaryGeneratorAction()
>> 83 {
>> 84 delete particleGun;
>> 85 delete gunMessenger;
>> 86 }
65 87
66 auto *particleTable = G4ParticleTable::Get << 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
67 auto *particle = particleTable->FindPartic <<
68 particleGun->SetParticleDefinition(particl <<
69 particleGun->SetParticleMomentumDirection( <<
70 89
71 constexpr auto PARTICLE_ENERGY{30. * MeV}; << 90 void GammaRayTelPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
72 particleGun->SetParticleEnergy(PARTICLE_EN << 91 {
>> 92 //this function is called at the begining of event
>> 93 //
>> 94 G4double z0 = 0.5*(GammaRayTelDetector->GetWorldSizeZ());
>> 95 G4double x0 = 0.*cm, y0 = 0.*cm;
>> 96
>> 97 G4ThreeVector pos0;
>> 98 G4ThreeVector dir0;
>> 99 G4ThreeVector vertex0 = G4ThreeVector(x0,y0,z0);
>> 100
>> 101 dir0 = G4ThreeVector(0.,0.,-1.);
>> 102
>> 103 G4double theta, phi, y, f;
>> 104 G4double theta0=0.;
>> 105 G4double phi0=0.;
>> 106
>> 107 switch(nSourceType) {
>> 108 case 0:
>> 109 particleGun->SetParticlePosition(vertex0);
>> 110 particleGun->SetParticleMomentumDirection(dir0);
>> 111 break;
>> 112 case 1:
>> 113 // GS: Generate random position on the 4PIsphere to create a unif. distrib.
>> 114 // GS: on the sphere
>> 115 phi = G4UniformRand() * twopi;
>> 116 do {
>> 117 y = G4UniformRand()*1.0;
>> 118 theta = G4UniformRand() * pi;
>> 119 f = std::sin(theta);
>> 120 } while (y > f);
>> 121 vertex0 = G4ThreeVector(1.,0.,0.);
>> 122 vertex0.setMag(dVertexRadius);
>> 123 vertex0.setTheta(theta);
>> 124 vertex0.setPhi(phi);
>> 125 particleGun->SetParticlePosition(vertex0);
>> 126
>> 127 dir0 = G4ThreeVector(1.,0.,0.);
>> 128 do {
>> 129 phi = G4UniformRand() * twopi;
>> 130 do {
>> 131 y = G4UniformRand()*1.0;
>> 132 theta = G4UniformRand() * pi;
>> 133 f = std::sin(theta);
>> 134 } while (y > f);
>> 135 dir0.setPhi(phi);
>> 136 dir0.setTheta(theta);
>> 137 } while (vertex0.dot(dir0) >= -0.7 * vertex0.mag());
>> 138 particleGun->SetParticleMomentumDirection((G4ParticleMomentum)dir0);
>> 139
>> 140 break;
>> 141 case 2:
>> 142 // GS: Generate random position on the upper semi-sphere z>0 to create a unif. distrib.
>> 143 // GS: on a plane
>> 144 phi = G4UniformRand() * twopi;
>> 145 do {
>> 146 y = G4UniformRand()*1.0;
>> 147 theta = G4UniformRand() * halfpi;
>> 148 f = std::sin(theta) * std::cos(theta);
>> 149 } while (y > f);
>> 150 vertex0 = G4ThreeVector(1.,0.,0.);
>> 151
>> 152 G4double xy = GammaRayTelDetector->GetWorldSizeXY();
>> 153 G4double z = GammaRayTelDetector->GetWorldSizeZ();
>> 154
>> 155 if (dVertexRadius > xy*0.5)
>> 156 {
>> 157 G4cout << "vertexRadius too big " << G4endl;
>> 158 G4cout << "vertexRadius setted to " << xy*0.45 << G4endl;
>> 159 dVertexRadius = xy*0.45;
>> 160 }
>> 161
>> 162 if (dVertexRadius > z*0.5)
>> 163 {
>> 164 G4cout << "vertexRadius too high " << G4endl;
>> 165 G4cout << "vertexRadius setted to " << z*0.45 << G4endl;
>> 166 dVertexRadius = z*0.45;
>> 167 }
>> 168
>> 169
>> 170 vertex0.setMag(dVertexRadius);
>> 171 vertex0.setTheta(theta);
>> 172 vertex0.setPhi(phi);
>> 173
>> 174 // GS: Get the user defined direction for the primaries and
>> 175 // GS: Rotate the random position according to the user defined direction for the particle
>> 176
>> 177 dir0 = particleGun->GetParticleMomentumDirection();
>> 178 if (dir0.mag() > 0.001)
>> 179 {
>> 180 theta0 = dir0.theta();
>> 181 phi0 = dir0.phi();
>> 182 }
>> 183
>> 184 if (theta0!=0.)
>> 185 {
>> 186 G4ThreeVector rotationAxis(1.,0.,0.);
>> 187 rotationAxis.setPhi(phi0+halfpi);
>> 188 vertex0.rotate(theta0+pi,rotationAxis);
>> 189 }
>> 190 particleGun->SetParticlePosition(vertex0);
>> 191 break;
>> 192 }
>> 193
>> 194
>> 195 G4double pEnergy;
>> 196
>> 197 switch(nSpectrumType) {
>> 198 case 0:
>> 199 break;
>> 200 case 1:
>> 201 break;
>> 202 case 2:
>> 203 do {
>> 204 y = G4UniformRand()*100000.0;
>> 205 pEnergy = G4UniformRand() * 10. * GeV;
>> 206 f = std::pow(pEnergy * (1/GeV), -4.);
>> 207 } while (y > f);
>> 208
>> 209 particleGun->SetParticleEnergy(pEnergy);
>> 210
>> 211 break;
>> 212 case 3:
>> 213 break;
>> 214 }
73 215
74 auto position = 0.5 * (detector->GetWorldS << 216 particleGun->GeneratePrimaryVertex(anEvent);
75 particleGun->SetParticlePosition(G4ThreeVe << 217
76 particleSource = new G4GeneralParticleSour <<
77 } 218 }
78 219
79 //....oooOO0OOooo........oooOO0OOooo........oo 220 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
80 221
81 GammaRayTelPrimaryGeneratorAction::~GammaRayTe <<
82 delete particleGun; <<
83 delete particleSource; <<
84 delete gunMessenger; <<
85 } <<
86 222
87 //....oooOO0OOooo........oooOO0OOooo........oo <<
88 223
89 void GammaRayTelPrimaryGeneratorAction::Genera << 224
90 if (sourceGun) { << 225
91 G4cout << "Using G4ParticleGun... " << << 226
92 << 227
93 // this function is called at the begi << 228
94 // <<
95 G4double x0 = 0. * cm; <<
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 } <<
231 229