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25 // 25 //
26 << 26 //
27 #include "G4AdjointPhotoElectricModel.hh" 27 #include "G4AdjointPhotoElectricModel.hh"
28 <<
29 #include "G4AdjointCSManager.hh" 28 #include "G4AdjointCSManager.hh"
30 #include "G4AdjointElectron.hh" << 29
31 #include "G4AdjointGamma.hh" <<
32 #include "G4Gamma.hh" <<
33 #include "G4ParticleChange.hh" <<
34 #include "G4PEEffectFluoModel.hh" <<
35 #include "G4PhysicalConstants.hh" 30 #include "G4PhysicalConstants.hh"
>> 31 #include "G4Integrator.hh"
36 #include "G4TrackStatus.hh" 32 #include "G4TrackStatus.hh"
>> 33 #include "G4ParticleChange.hh"
>> 34 #include "G4AdjointElectron.hh"
>> 35 #include "G4Gamma.hh"
>> 36 #include "G4AdjointGamma.hh"
>> 37
37 38
38 ////////////////////////////////////////////// 39 ////////////////////////////////////////////////////////////////////////////////
39 G4AdjointPhotoElectricModel::G4AdjointPhotoEle << 40 //
40 : G4VEmAdjointModel("AdjointPEEffect") << 41 G4AdjointPhotoElectricModel::G4AdjointPhotoElectricModel():
>> 42 G4VEmAdjointModel("AdjointPEEffect")
41 43
42 { << 44 { SetUseMatrix(false);
43 SetUseMatrix(false); <<
44 SetApplyCutInRange(false); 45 SetApplyCutInRange(false);
45 46
46 fAdjEquivDirectPrimPart = G4AdjointGamma:: << 47 //Initialization
47 fAdjEquivDirectSecondPart = G4AdjointElectro << 48 current_eEnergy =0.;
48 fDirectPrimaryPart = G4Gamma::Gamma() << 49 totAdjointCS=0.;
49 fSecondPartSameType = false; << 50 factorCSBiasing =1.;
50 fDirectModel = new G4PEEffectFl << 51 post_step_AdjointCS =0.;
>> 52 pre_step_AdjointCS =0.;
>> 53 totBiasedAdjointCS =0.;
>> 54
>> 55 index_element=0;
>> 56
>> 57 theAdjEquivOfDirectPrimPartDef =G4AdjointGamma::AdjointGamma();
>> 58 theAdjEquivOfDirectSecondPartDef=G4AdjointElectron::AdjointElectron();
>> 59 theDirectPrimaryPartDef=G4Gamma::Gamma();
>> 60 second_part_of_same_type=false;
>> 61 theDirectPEEffectModel = new G4PEEffectFluoModel();
51 } 62 }
52 <<
53 ////////////////////////////////////////////// 63 ////////////////////////////////////////////////////////////////////////////////
54 G4AdjointPhotoElectricModel::~G4AdjointPhotoEl << 64 //
55 << 65 G4AdjointPhotoElectricModel::~G4AdjointPhotoElectricModel()
56 ////////////////////////////////////////////// << 66 {;}
57 void G4AdjointPhotoElectricModel::SampleSecond << 67
58 const G4Track& aTrack, G4bool isScatProjToPr << 68 ////////////////////////////////////////////////////////////////////////////////
59 G4ParticleChange* fParticleChange) << 69 //
60 { << 70 void G4AdjointPhotoElectricModel::SampleSecondaries(const G4Track& aTrack,
61 if(isScatProjToProj) << 71 G4bool IsScatProjToProjCase,
62 return; << 72 G4ParticleChange* fParticleChange)
63 << 73 { if (IsScatProjToProjCase) return ;
64 // Compute the fTotAdjointCS vectors if not << 74
65 // couple and electron energy << 75 //Compute the totAdjointCS vectors if not already done for the current couple and electron energy
66 const G4DynamicParticle* aDynPart = aTrack.G << 76 //-----------------------------------------------------------------------------------------------
67 G4double electronEnergy = aDynPart << 77 const G4MaterialCutsCouple* aCouple = aTrack.GetMaterialCutsCouple();
68 G4ThreeVector electronDirection = aDynPart << 78 const G4DynamicParticle* aDynPart = aTrack.GetDynamicParticle() ;
69 fPreStepAdjointCS = << 79 G4double electronEnergy = aDynPart->GetKineticEnergy();
70 fTotAdjointCS; // The last computed CS wa << 80 G4ThreeVector electronDirection= aDynPart->GetMomentumDirection() ;
71 AdjointCrossSection(aTrack.GetMaterialCutsCo << 81 pre_step_AdjointCS = totAdjointCS; //The last computed CS was at pre step point
72 isScatProjToProj); << 82 post_step_AdjointCS = AdjointCrossSection(aCouple, electronEnergy,IsScatProjToProjCase);
73 fPostStepAdjointCS = fTotAdjointCS; << 83 post_step_AdjointCS = totAdjointCS;
74 << 84
75 // Sample element << 85
76 const G4ElementVector* theElementVector = << 86
77 fCurrentMaterial->GetElementVector(); << 87
78 size_t nelm = fCurrentMaterial->GetNumb << 88 //Sample element
79 G4double rand_CS = G4UniformRand() * fXsec[n << 89 //-------------
80 for(fIndexElement = 0; fIndexElement < nelm << 90 const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
81 { << 91 size_t nelm = currentMaterial->GetNumberOfElements();
82 if(rand_CS < fXsec[fIndexElement]) << 92 G4double rand_CS= G4UniformRand()*xsec[nelm-1];
83 break; << 93 for (index_element=0; index_element<nelm-1; index_element++){
84 } << 94 if (rand_CS<xsec[index_element]) break;
85 << 95 }
86 // Sample shell and binding energy << 96
87 G4int nShells = (*theElementVector)[fIndexEl << 97 //Sample shell and binding energy
88 rand_CS = fShellProb[fIndexElement][nS << 98 //-------------
89 G4int i; << 99 G4int nShells = (*theElementVector)[index_element]->GetNbOfAtomicShells();
90 for(i = 0; i < nShells - 1; ++i) << 100 rand_CS= shell_prob[index_element][nShells-1]*G4UniformRand();
91 { << 101 G4int i = 0;
92 if(rand_CS < fShellProb[fIndexElement][i]) << 102 for (i=0; i<nShells-1; i++){
93 break; << 103 if (rand_CS<shell_prob[index_element][i]) break;
94 } << 104 }
95 G4double gammaEnergy = << 105 G4double gammaEnergy= electronEnergy+(*theElementVector)[index_element]->GetAtomicShell(i);
96 electronEnergy + (*theElementVector)[fInde << 106
97 << 107 //Sample cos theta
98 // Sample cos theta << 108 //Copy of the G4PEEfectFluoModel cos theta sampling method ElecCosThetaDistribution.
99 // Copy of the G4PEEfectFluoModel cos theta << 109 //This method cannot be used directly from G4PEEfectFluoModel because it is a friend method. I should ask Vladimir to change that
100 // ElecCosThetaDistribution. This method can << 110 //------------------------------------------------------------------------------------------------
101 // G4PEEffectFluoModel because it is a frien << 111 //G4double cos_theta = theDirectPEEffectModel->ElecCosThetaDistribution(electronEnergy);
102 G4double cos_theta = 1.; << 112
103 G4double gamma = 1. + electronEnergy / e << 113 G4double cos_theta = 1.;
104 if(gamma <= 5.) << 114 G4double gamma = 1. + electronEnergy/electron_mass_c2;
105 { << 115 if (gamma <= 5.) {
106 G4double beta = std::sqrt(gamma * gamma - << 116 G4double beta = std::sqrt(gamma*gamma-1.)/gamma;
107 G4double b = 0.5 * gamma * (gamma - 1.) << 117 G4double b = 0.5*gamma*(gamma-1.)*(gamma-2);
108 << 118
109 G4double rndm, term, greject, grejsup; << 119 G4double rndm,term,greject,grejsup;
110 if(gamma < 2.) << 120 if (gamma < 2.) grejsup = gamma*gamma*(1.+b-beta*b);
111 grejsup = gamma * gamma * (1. + b - beta << 121 else grejsup = gamma*gamma*(1.+b+beta*b);
112 else << 122
113 grejsup = gamma * gamma * (1. + b + beta << 123 do { rndm = 1.-2*G4UniformRand();
114 << 124 cos_theta = (rndm+beta)/(rndm*beta+1.);
115 do << 125 term = 1.-beta*cos_theta;
116 { << 126 greject = (1.-cos_theta*cos_theta)*(1.+b*term)/(term*term);
117 rndm = 1. - 2. * G4UniformRand(); << 127 // Loop checking, 07-Aug-2015, Vladimir Ivanchenko
118 cos_theta = (rndm + beta) / (rndm * beta << 128 } while(greject < G4UniformRand()*grejsup);
119 term = 1. - beta * cos_theta; <<
120 greject = (1. - cos_theta * cos_theta) * <<
121 // Loop checking, 07-Aug-2015, Vladimir <<
122 } while(greject < G4UniformRand() * grejsu <<
123 } 129 }
124 << 130
125 // direction of the adjoint gamma electron 131 // direction of the adjoint gamma electron
126 G4double sin_theta = std::sqrt(1. - cos_thet << 132 //---------------------------------------
127 G4double phi = twopi * G4UniformRand() << 133
128 G4double dirx = sin_theta * std::cos(ph << 134
129 G4double diry = sin_theta * std::sin(ph << 135 G4double sin_theta = std::sqrt(1.-cos_theta*cos_theta);
130 G4double dirz = cos_theta; << 136 G4double Phi = twopi * G4UniformRand();
131 G4ThreeVector adjoint_gammaDirection(dirx, d << 137 G4double dirx = sin_theta*std::cos(Phi),diry = sin_theta*std::sin(Phi),dirz = cos_theta;
>> 138 G4ThreeVector adjoint_gammaDirection(dirx,diry,dirz);
132 adjoint_gammaDirection.rotateUz(electronDire 139 adjoint_gammaDirection.rotateUz(electronDirection);
133 << 140
134 // Weight correction << 141
135 CorrectPostStepWeight(fParticleChange, aTrac << 142
136 gammaEnergy, isScatPro << 143 //Weight correction
137 << 144 //-----------------------
138 // Create secondary and modify fParticleChan << 145 CorrectPostStepWeight(fParticleChange, aTrack.GetWeight(), electronEnergy,gammaEnergy,IsScatProjToProjCase);
139 G4DynamicParticle* anAdjointGamma = new G4Dy << 146
140 G4AdjointGamma::AdjointGamma(), adjoint_ga << 147
141 << 148
>> 149 //Create secondary and modify fParticleChange
>> 150 //--------------------------------------------
>> 151 G4DynamicParticle* anAdjointGamma = new G4DynamicParticle (
>> 152 G4AdjointGamma::AdjointGamma(),adjoint_gammaDirection, gammaEnergy);
>> 153
>> 154
>> 155
>> 156
>> 157
142 fParticleChange->ProposeTrackStatus(fStopAnd 158 fParticleChange->ProposeTrackStatus(fStopAndKill);
143 fParticleChange->AddSecondary(anAdjointGamma << 159 fParticleChange->AddSecondary(anAdjointGamma);
144 } << 160
145 161
146 ////////////////////////////////////////////// << 162
147 void G4AdjointPhotoElectricModel::CorrectPostS <<
148 G4ParticleChange* fParticleChange, G4double <<
149 G4double adjointPrimKinEnergy, G4double proj <<
150 { <<
151 G4double new_weight = old_weight; <<
152 163
153 G4double w_corr = <<
154 G4AdjointCSManager::GetAdjointCSManager()- <<
155 fFactorCSBiasing; <<
156 w_corr *= fPostStepAdjointCS / fPreStepAdjoi <<
157 <<
158 new_weight *= w_corr * projectileKinEnergy / <<
159 fParticleChange->SetParentWeightByProcess(fa <<
160 fParticleChange->SetSecondaryWeightByProcess <<
161 fParticleChange->ProposeParentWeight(new_wei <<
162 } 164 }
163 165
164 ////////////////////////////////////////////// 166 ////////////////////////////////////////////////////////////////////////////////
165 G4double G4AdjointPhotoElectricModel::AdjointC << 167 //
166 const G4MaterialCutsCouple* aCouple, G4doubl << 168 void G4AdjointPhotoElectricModel::CorrectPostStepWeight(G4ParticleChange* fParticleChange,
167 G4bool isScatProjToProj) << 169 G4double old_weight,
168 { << 170 G4double adjointPrimKinEnergy,
169 if(isScatProjToProj) << 171 G4double projectileKinEnergy ,
170 return 0.; << 172 G4bool )
171 << 173 {
172 G4double totBiasedAdjointCS = 0.; << 174 G4double new_weight=old_weight;
173 if(aCouple != fCurrentCouple || fCurrenteEne << 175
174 { << 176 G4double w_corr =G4AdjointCSManager::GetAdjointCSManager()->GetPostStepWeightCorrection()/factorCSBiasing;
175 fTotAdjointCS = 0.; << 177 w_corr*=post_step_AdjointCS/pre_step_AdjointCS;
176 DefineCurrentMaterialAndElectronEnergy(aCo << 178
177 const G4ElementVector* theElementVector = << 179
178 fCurrentMaterial->GetElementVector(); << 180 new_weight*=w_corr;
179 const G4double* theAtomNumDensityVector = << 181 new_weight*=projectileKinEnergy/adjointPrimKinEnergy;
180 fCurrentMaterial->GetVecNbOfAtomsPerVolu << 182 fParticleChange->SetParentWeightByProcess(false);
181 size_t nelm = fCurrentMaterial->GetNumberO << 183 fParticleChange->SetSecondaryWeightByProcess(false);
182 for(fIndexElement = 0; fIndexElement < nel << 184 fParticleChange->ProposeParentWeight(new_weight);
183 { << 185 }
184 fTotAdjointCS += AdjointCrossSectionPerA << 186
185 (*theElementVector)[f << 187 ////////////////////////////////////////////////////////////////////////////////
186 theAtomNumDensityVector << 188 //
187 fXsec[fIndexElement] = fTotAdjointCS; << 189
188 } << 190 G4double G4AdjointPhotoElectricModel::AdjointCrossSection(const G4MaterialCutsCouple* aCouple,
189 << 191 G4double electronEnergy,
190 totBiasedAdjointCS = std::min(fTotAdjointC << 192 G4bool IsScatProjToProjCase)
191 fFactorCSBiasing = totBiasedAdjointCS / << 193 {
>> 194
>> 195
>> 196 if (IsScatProjToProjCase) return 0.;
>> 197
>> 198
>> 199 if (aCouple !=currentCouple || current_eEnergy !=electronEnergy) {
>> 200 totAdjointCS = 0.;
>> 201 DefineCurrentMaterialAndElectronEnergy(aCouple, electronEnergy);
>> 202 const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
>> 203 const double* theAtomNumDensityVector = currentMaterial->GetVecNbOfAtomsPerVolume();
>> 204 size_t nelm = currentMaterial->GetNumberOfElements();
>> 205 for (index_element=0;index_element<nelm;index_element++){
>> 206
>> 207 totAdjointCS +=AdjointCrossSectionPerAtom((*theElementVector)[index_element],electronEnergy)*theAtomNumDensityVector[index_element];
>> 208 xsec[index_element] = totAdjointCS;
>> 209 }
>> 210
>> 211 totBiasedAdjointCS=std::min(totAdjointCS,0.01);
>> 212 // totBiasedAdjointCS=totAdjointCS;
>> 213 factorCSBiasing = totBiasedAdjointCS/totAdjointCS;
>> 214 lastCS=totBiasedAdjointCS;
>> 215
>> 216
192 } 217 }
193 return totBiasedAdjointCS; 218 return totBiasedAdjointCS;
>> 219
>> 220
194 } 221 }
>> 222 ////////////////////////////////////////////////////////////////////////////////
>> 223 //
195 224
>> 225 G4double G4AdjointPhotoElectricModel::GetAdjointCrossSection(const G4MaterialCutsCouple* aCouple,
>> 226 G4double electronEnergy,
>> 227 G4bool IsScatProjToProjCase)
>> 228 { return AdjointCrossSection(aCouple,electronEnergy,IsScatProjToProjCase);
>> 229 }
196 ////////////////////////////////////////////// 230 ////////////////////////////////////////////////////////////////////////////////
197 G4double G4AdjointPhotoElectricModel::AdjointC << 231 //
198 const G4Element* anElement, G4double electro << 232
199 { << 233 G4double G4AdjointPhotoElectricModel::AdjointCrossSectionPerAtom(const G4Element* anElement,G4double electronEnergy)
200 G4int nShells = anElement->GetNbOfAto << 234 {
201 G4double Z = anElement->GetZ(); << 235 G4int nShells = anElement->GetNbOfAtomicShells();
202 G4double gammaEnergy = electronEnergy + anEl << 236 G4double Z= anElement->GetZ();
203 G4double CS = fDirectModel->Compute << 237 G4int i = 0;
204 G4Gamma::Gamma(), gammaEnergy, Z, 0., 0., << 238 G4double B0=anElement->GetAtomicShell(0);
205 G4double adjointCS = 0.; << 239 G4double gammaEnergy = electronEnergy+B0;
206 if(CS > 0.) << 240 G4double CS= theDirectPEEffectModel->ComputeCrossSectionPerAtom(G4Gamma::Gamma(),gammaEnergy,Z,0.,0.,0.);
207 adjointCS += CS / gammaEnergy; << 241 G4double adjointCS =0.;
208 fShellProb[fIndexElement][0] = adjointCS; << 242 if (CS >0) adjointCS += CS/gammaEnergy;
209 for(G4int i = 1; i < nShells; ++i) << 243 shell_prob[index_element][0] = adjointCS;
210 { << 244 for (i=1;i<nShells;i++){
211 G4double Bi1 = anElement->GetAtomicShell(i << 245 //G4cout<<i<<G4endl;
212 G4double Bi = anElement->GetAtomicShell(i << 246 G4double Bi_= anElement->GetAtomicShell(i-1);
213 if(electronEnergy < Bi1 - Bi) << 247 G4double Bi = anElement->GetAtomicShell(i);
214 { << 248 //G4cout<<Bi_<<'\t'<<Bi<<G4endl;
215 gammaEnergy = electronEnergy + Bi; << 249 if (electronEnergy <Bi_-Bi) {
216 CS = fDirectModel->ComputeCross << 250 gammaEnergy = electronEnergy+Bi;
217 << 251
218 if(CS > 0.) << 252 CS=theDirectPEEffectModel->ComputeCrossSectionPerAtom(G4Gamma::Gamma(),gammaEnergy,Z,0.,0.,0.);
219 adjointCS += CS / gammaEnergy; << 253 if (CS>0) adjointCS +=CS/gammaEnergy;
220 } << 254 }
221 fShellProb[fIndexElement][i] = adjointCS; << 255 shell_prob[index_element][i] = adjointCS;
>> 256
222 } 257 }
223 adjointCS *= electronEnergy; << 258 adjointCS*=electronEnergy;
224 return adjointCS; 259 return adjointCS;
225 } << 260
226 << 261 }
227 ////////////////////////////////////////////// 262 ////////////////////////////////////////////////////////////////////////////////
228 void G4AdjointPhotoElectricModel::DefineCurren << 263 //
229 const G4MaterialCutsCouple* couple, G4double << 264
230 { << 265 void G4AdjointPhotoElectricModel::DefineCurrentMaterialAndElectronEnergy(const G4MaterialCutsCouple* couple, G4double anEnergy)
231 fCurrentCouple = const_cast<G4MaterialCuts << 266 { currentCouple = const_cast<G4MaterialCutsCouple*> (couple);
232 fCurrentMaterial = const_cast<G4Material*>(c << 267 currentMaterial = const_cast<G4Material*> (couple->GetMaterial());
233 fCurrenteEnergy = anEnergy; << 268 currentCoupleIndex = couple->GetIndex();
234 fDirectModel->SetCurrentCouple(couple); << 269 currentMaterialIndex = currentMaterial->GetIndex();
>> 270 current_eEnergy = anEnergy;
>> 271 theDirectPEEffectModel->SetCurrentCouple(couple);
235 } 272 }
236 273