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26 << 26 // $Id: G4AdjointPhotoElectricModel.cc,v 1.6 2010/11/11 11:51:56 ldesorgh Exp $
>> 27 // GEANT4 tag $Name: geant4-09-04 $
>> 28 //
27 #include "G4AdjointPhotoElectricModel.hh" 29 #include "G4AdjointPhotoElectricModel.hh"
28 <<
29 #include "G4AdjointCSManager.hh" 30 #include "G4AdjointCSManager.hh"
>> 31
>> 32
>> 33 #include "G4Integrator.hh"
>> 34 #include "G4TrackStatus.hh"
>> 35 #include "G4ParticleChange.hh"
30 #include "G4AdjointElectron.hh" 36 #include "G4AdjointElectron.hh"
>> 37 #include "G4Gamma.hh"
31 #include "G4AdjointGamma.hh" 38 #include "G4AdjointGamma.hh"
32 #include "G4Gamma.hh" << 39
33 #include "G4ParticleChange.hh" <<
34 #include "G4PEEffectFluoModel.hh" <<
35 #include "G4PhysicalConstants.hh" <<
36 #include "G4TrackStatus.hh" <<
37 40
38 ////////////////////////////////////////////// 41 ////////////////////////////////////////////////////////////////////////////////
39 G4AdjointPhotoElectricModel::G4AdjointPhotoEle << 42 //
40 : G4VEmAdjointModel("AdjointPEEffect") << 43 G4AdjointPhotoElectricModel::G4AdjointPhotoElectricModel():
>> 44 G4VEmAdjointModel("AdjointPEEffect")
41 45
42 { << 46 { SetUseMatrix(false);
43 SetUseMatrix(false); <<
44 SetApplyCutInRange(false); 47 SetApplyCutInRange(false);
45 << 48 current_eEnergy =0.;
46 fAdjEquivDirectPrimPart = G4AdjointGamma:: << 49 totAdjointCS=0.;
47 fAdjEquivDirectSecondPart = G4AdjointElectro << 50 theAdjEquivOfDirectPrimPartDef =G4AdjointGamma::AdjointGamma();
48 fDirectPrimaryPart = G4Gamma::Gamma() << 51 theAdjEquivOfDirectSecondPartDef=G4AdjointElectron::AdjointElectron();
49 fSecondPartSameType = false; << 52 theDirectPrimaryPartDef=G4Gamma::Gamma();
50 fDirectModel = new G4PEEffectFl << 53 second_part_of_same_type=false;
>> 54 theDirectPEEffectModel = new G4PEEffectModel();
>> 55
51 } 56 }
52 <<
53 ////////////////////////////////////////////// 57 ////////////////////////////////////////////////////////////////////////////////
54 G4AdjointPhotoElectricModel::~G4AdjointPhotoEl << 58 //
55 << 59 G4AdjointPhotoElectricModel::~G4AdjointPhotoElectricModel()
56 ////////////////////////////////////////////// << 60 {;}
57 void G4AdjointPhotoElectricModel::SampleSecond << 61
58 const G4Track& aTrack, G4bool isScatProjToPr << 62 ////////////////////////////////////////////////////////////////////////////////
59 G4ParticleChange* fParticleChange) << 63 //
60 { << 64 void G4AdjointPhotoElectricModel::SampleSecondaries(const G4Track& aTrack,
61 if(isScatProjToProj) << 65 G4bool IsScatProjToProjCase,
62 return; << 66 G4ParticleChange* fParticleChange)
63 << 67 { if (IsScatProjToProjCase) return ;
64 // Compute the fTotAdjointCS vectors if not << 68
65 // couple and electron energy << 69 //Compute the totAdjointCS vectors if not already done for the current couple and electron energy
66 const G4DynamicParticle* aDynPart = aTrack.G << 70 //-----------------------------------------------------------------------------------------------
67 G4double electronEnergy = aDynPart << 71 const G4MaterialCutsCouple* aCouple = aTrack.GetMaterialCutsCouple();
68 G4ThreeVector electronDirection = aDynPart << 72 const G4DynamicParticle* aDynPart = aTrack.GetDynamicParticle() ;
69 fPreStepAdjointCS = << 73 G4double electronEnergy = aDynPart->GetKineticEnergy();
70 fTotAdjointCS; // The last computed CS wa << 74 G4ThreeVector electronDirection= aDynPart->GetMomentumDirection() ;
71 AdjointCrossSection(aTrack.GetMaterialCutsCo << 75 pre_step_AdjointCS = totAdjointCS; //The last computed CS was at pre step point
72 isScatProjToProj); << 76 G4double adjCS;
73 fPostStepAdjointCS = fTotAdjointCS; << 77 adjCS = AdjointCrossSection(aCouple, electronEnergy,IsScatProjToProjCase);
74 << 78 post_step_AdjointCS = totAdjointCS;
75 // Sample element << 79
76 const G4ElementVector* theElementVector = << 80
77 fCurrentMaterial->GetElementVector(); << 81
78 size_t nelm = fCurrentMaterial->GetNumb << 82
79 G4double rand_CS = G4UniformRand() * fXsec[n << 83 //Sample element
80 for(fIndexElement = 0; fIndexElement < nelm << 84 //-------------
81 { << 85 const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
82 if(rand_CS < fXsec[fIndexElement]) << 86 size_t nelm = currentMaterial->GetNumberOfElements();
83 break; << 87 G4double rand_CS= G4UniformRand()*xsec[nelm-1];
84 } << 88 for (index_element=0; index_element<nelm-1; index_element++){
85 << 89 if (rand_CS<xsec[index_element]) break;
86 // Sample shell and binding energy << 90 }
87 G4int nShells = (*theElementVector)[fIndexEl << 91
88 rand_CS = fShellProb[fIndexElement][nS << 92 //Sample shell and binding energy
89 G4int i; << 93 //-------------
90 for(i = 0; i < nShells - 1; ++i) << 94 G4int nShells = (*theElementVector)[index_element]->GetNbOfAtomicShells();
91 { << 95 rand_CS= shell_prob[index_element][nShells-1]*G4UniformRand();
92 if(rand_CS < fShellProb[fIndexElement][i]) << 96 G4int i = 0;
93 break; << 97 for (i=0; i<nShells-1; i++){
94 } << 98 if (rand_CS<shell_prob[index_element][i]) break;
95 G4double gammaEnergy = << 99 }
96 electronEnergy + (*theElementVector)[fInde << 100 G4double gammaEnergy= electronEnergy+(*theElementVector)[index_element]->GetAtomicShell(i);
97 << 101
98 // Sample cos theta << 102 //Sample cos theta
99 // Copy of the G4PEEfectFluoModel cos theta << 103 //Copy of the G4PEEffectModel cos theta sampling method ElecCosThetaDistribution.
100 // ElecCosThetaDistribution. This method can << 104 //This method cannot be used directly from G4PEEffectModel because it is a friend method. I should ask Vladimir to change that
101 // G4PEEffectFluoModel because it is a frien << 105 //------------------------------------------------------------------------------------------------
102 G4double cos_theta = 1.; << 106 //G4double cos_theta = theDirectPEEffectModel->ElecCosThetaDistribution(electronEnergy);
103 G4double gamma = 1. + electronEnergy / e << 107
104 if(gamma <= 5.) << 108 G4double cos_theta = 1.;
105 { << 109 G4double gamma = 1. + electronEnergy/electron_mass_c2;
106 G4double beta = std::sqrt(gamma * gamma - << 110 if (gamma <= 5.) {
107 G4double b = 0.5 * gamma * (gamma - 1.) << 111 G4double beta = std::sqrt(gamma*gamma-1.)/gamma;
108 << 112 G4double b = 0.5*gamma*(gamma-1.)*(gamma-2);
109 G4double rndm, term, greject, grejsup; << 113
110 if(gamma < 2.) << 114 G4double rndm,term,greject,grejsup;
111 grejsup = gamma * gamma * (1. + b - beta << 115 if (gamma < 2.) grejsup = gamma*gamma*(1.+b-beta*b);
112 else << 116 else grejsup = gamma*gamma*(1.+b+beta*b);
113 grejsup = gamma * gamma * (1. + b + beta << 117
114 << 118 do { rndm = 1.-2*G4UniformRand();
115 do << 119 cos_theta = (rndm+beta)/(rndm*beta+1.);
116 { << 120 term = 1.-beta*cos_theta;
117 rndm = 1. - 2. * G4UniformRand(); << 121 greject = (1.-cos_theta*cos_theta)*(1.+b*term)/(term*term);
118 cos_theta = (rndm + beta) / (rndm * beta << 122 } 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 } 123 }
124 << 124
125 // direction of the adjoint gamma electron 125 // direction of the adjoint gamma electron
126 G4double sin_theta = std::sqrt(1. - cos_thet << 126 //---------------------------------------
127 G4double phi = twopi * G4UniformRand() << 127
128 G4double dirx = sin_theta * std::cos(ph << 128
129 G4double diry = sin_theta * std::sin(ph << 129 G4double sin_theta = std::sqrt(1.-cos_theta*cos_theta);
130 G4double dirz = cos_theta; << 130 G4double Phi = twopi * G4UniformRand();
131 G4ThreeVector adjoint_gammaDirection(dirx, d << 131 G4double dirx = sin_theta*std::cos(Phi),diry = sin_theta*std::sin(Phi),dirz = cos_theta;
>> 132 G4ThreeVector adjoint_gammaDirection(dirx,diry,dirz);
132 adjoint_gammaDirection.rotateUz(electronDire 133 adjoint_gammaDirection.rotateUz(electronDirection);
133 << 134
134 // Weight correction << 135
135 CorrectPostStepWeight(fParticleChange, aTrac << 136
136 gammaEnergy, isScatPro << 137 //Weight correction
137 << 138 //-----------------------
138 // Create secondary and modify fParticleChan << 139 CorrectPostStepWeight(fParticleChange, aTrack.GetWeight(), electronEnergy,gammaEnergy,IsScatProjToProjCase);
139 G4DynamicParticle* anAdjointGamma = new G4Dy << 140
140 G4AdjointGamma::AdjointGamma(), adjoint_ga << 141
141 << 142
>> 143 //Create secondary and modify fParticleChange
>> 144 //--------------------------------------------
>> 145 G4DynamicParticle* anAdjointGamma = new G4DynamicParticle (
>> 146 G4AdjointGamma::AdjointGamma(),adjoint_gammaDirection, gammaEnergy);
>> 147
>> 148
>> 149
>> 150
>> 151
142 fParticleChange->ProposeTrackStatus(fStopAnd 152 fParticleChange->ProposeTrackStatus(fStopAndKill);
143 fParticleChange->AddSecondary(anAdjointGamma << 153 fParticleChange->AddSecondary(anAdjointGamma);
144 } << 154
145 155
146 ////////////////////////////////////////////// << 156
147 void G4AdjointPhotoElectricModel::CorrectPostS <<
148 G4ParticleChange* fParticleChange, G4double <<
149 G4double adjointPrimKinEnergy, G4double proj <<
150 { <<
151 G4double new_weight = old_weight; <<
152 157
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 } 158 }
163 159
164 ////////////////////////////////////////////// 160 ////////////////////////////////////////////////////////////////////////////////
165 G4double G4AdjointPhotoElectricModel::AdjointC << 161 //
166 const G4MaterialCutsCouple* aCouple, G4doubl << 162 void G4AdjointPhotoElectricModel::CorrectPostStepWeight(G4ParticleChange* fParticleChange,
167 G4bool isScatProjToProj) << 163 G4double old_weight,
168 { << 164 G4double adjointPrimKinEnergy,
169 if(isScatProjToProj) << 165 G4double projectileKinEnergy ,
170 return 0.; << 166 G4bool )
171 << 167 {
172 G4double totBiasedAdjointCS = 0.; << 168 G4double new_weight=old_weight;
173 if(aCouple != fCurrentCouple || fCurrenteEne << 169
174 { << 170 G4double w_corr =G4AdjointCSManager::GetAdjointCSManager()->GetPostStepWeightCorrection()/factorCSBiasing;
175 fTotAdjointCS = 0.; << 171 w_corr*=post_step_AdjointCS/pre_step_AdjointCS;
176 DefineCurrentMaterialAndElectronEnergy(aCo << 172 new_weight*=w_corr;
177 const G4ElementVector* theElementVector = << 173 new_weight*=projectileKinEnergy/adjointPrimKinEnergy;
178 fCurrentMaterial->GetElementVector(); << 174 fParticleChange->SetParentWeightByProcess(false);
179 const G4double* theAtomNumDensityVector = << 175 fParticleChange->SetSecondaryWeightByProcess(false);
180 fCurrentMaterial->GetVecNbOfAtomsPerVolu << 176 fParticleChange->ProposeParentWeight(new_weight);
181 size_t nelm = fCurrentMaterial->GetNumberO << 177 }
182 for(fIndexElement = 0; fIndexElement < nel << 178
183 { << 179 ////////////////////////////////////////////////////////////////////////////////
184 fTotAdjointCS += AdjointCrossSectionPerA << 180 //
185 (*theElementVector)[f << 181
186 theAtomNumDensityVector << 182 G4double G4AdjointPhotoElectricModel::AdjointCrossSection(const G4MaterialCutsCouple* aCouple,
187 fXsec[fIndexElement] = fTotAdjointCS; << 183 G4double electronEnergy,
188 } << 184 G4bool IsScatProjToProjCase)
189 << 185 {
190 totBiasedAdjointCS = std::min(fTotAdjointC << 186
191 fFactorCSBiasing = totBiasedAdjointCS / << 187
>> 188 if (IsScatProjToProjCase) return 0.;
>> 189
>> 190
>> 191 if (aCouple !=currentCouple || current_eEnergy !=electronEnergy) {
>> 192 totAdjointCS = 0.;
>> 193 DefineCurrentMaterialAndElectronEnergy(aCouple, electronEnergy);
>> 194 const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
>> 195 const double* theAtomNumDensityVector = currentMaterial->GetVecNbOfAtomsPerVolume();
>> 196 size_t nelm = currentMaterial->GetNumberOfElements();
>> 197 for (index_element=0;index_element<nelm;index_element++){
>> 198
>> 199 totAdjointCS +=AdjointCrossSectionPerAtom((*theElementVector)[index_element],electronEnergy)*theAtomNumDensityVector[index_element];
>> 200 xsec[index_element] = totAdjointCS;
>> 201 }
>> 202
>> 203 totBiasedAdjointCS=std::min(totAdjointCS,0.01);
>> 204 // totBiasedAdjointCS=totAdjointCS;
>> 205 factorCSBiasing = totBiasedAdjointCS/totAdjointCS;
>> 206 lastCS=totBiasedAdjointCS;
>> 207
>> 208
192 } 209 }
193 return totBiasedAdjointCS; 210 return totBiasedAdjointCS;
>> 211
>> 212
194 } 213 }
>> 214 ////////////////////////////////////////////////////////////////////////////////
>> 215 //
195 216
>> 217 G4double G4AdjointPhotoElectricModel::GetAdjointCrossSection(const G4MaterialCutsCouple* aCouple,
>> 218 G4double electronEnergy,
>> 219 G4bool IsScatProjToProjCase)
>> 220 { return AdjointCrossSection(aCouple,electronEnergy,IsScatProjToProjCase);
>> 221 }
196 ////////////////////////////////////////////// 222 ////////////////////////////////////////////////////////////////////////////////
197 G4double G4AdjointPhotoElectricModel::AdjointC << 223 //
198 const G4Element* anElement, G4double electro << 224
199 { << 225 G4double G4AdjointPhotoElectricModel::AdjointCrossSectionPerAtom(const G4Element* anElement,G4double electronEnergy)
200 G4int nShells = anElement->GetNbOfAto << 226 {
201 G4double Z = anElement->GetZ(); << 227 G4int nShells = anElement->GetNbOfAtomicShells();
202 G4double gammaEnergy = electronEnergy + anEl << 228 G4double Z= anElement->GetZ();
203 G4double CS = fDirectModel->Compute << 229 G4int i = 0;
204 G4Gamma::Gamma(), gammaEnergy, Z, 0., 0., << 230 G4double B0=anElement->GetAtomicShell(0);
205 G4double adjointCS = 0.; << 231 G4double gammaEnergy = electronEnergy+B0;
206 if(CS > 0.) << 232 G4double CS= theDirectPEEffectModel->ComputeCrossSectionPerAtom(G4Gamma::Gamma(),gammaEnergy,Z,0.,0.,0.);
207 adjointCS += CS / gammaEnergy; << 233 G4double adjointCS =0.;
208 fShellProb[fIndexElement][0] = adjointCS; << 234 if (CS >0) adjointCS += CS/gammaEnergy;
209 for(G4int i = 1; i < nShells; ++i) << 235 shell_prob[index_element][0] = adjointCS;
210 { << 236 for (i=1;i<nShells;i++){
211 G4double Bi1 = anElement->GetAtomicShell(i << 237 //G4cout<<i<<G4endl;
212 G4double Bi = anElement->GetAtomicShell(i << 238 G4double Bi_= anElement->GetAtomicShell(i-1);
213 if(electronEnergy < Bi1 - Bi) << 239 G4double Bi = anElement->GetAtomicShell(i);
214 { << 240 //G4cout<<Bi_<<'\t'<<Bi<<G4endl;
215 gammaEnergy = electronEnergy + Bi; << 241 if (electronEnergy <Bi_-Bi) {
216 CS = fDirectModel->ComputeCross << 242 gammaEnergy = electronEnergy+Bi;
217 << 243
218 if(CS > 0.) << 244 CS=theDirectPEEffectModel->ComputeCrossSectionPerAtom(G4Gamma::Gamma(),gammaEnergy,Z,0.,0.,0.);
219 adjointCS += CS / gammaEnergy; << 245 if (CS>0) adjointCS +=CS/gammaEnergy;
220 } << 246 }
221 fShellProb[fIndexElement][i] = adjointCS; << 247 shell_prob[index_element][i] = adjointCS;
>> 248
222 } 249 }
223 adjointCS *= electronEnergy; << 250 adjointCS*=electronEnergy;
224 return adjointCS; 251 return adjointCS;
225 } << 252
226 << 253 }
227 ////////////////////////////////////////////// 254 ////////////////////////////////////////////////////////////////////////////////
228 void G4AdjointPhotoElectricModel::DefineCurren << 255 //
229 const G4MaterialCutsCouple* couple, G4double << 256
230 { << 257 void G4AdjointPhotoElectricModel::DefineCurrentMaterialAndElectronEnergy(const G4MaterialCutsCouple* couple, G4double anEnergy)
231 fCurrentCouple = const_cast<G4MaterialCuts << 258 { currentCouple = const_cast<G4MaterialCutsCouple*> (couple);
232 fCurrentMaterial = const_cast<G4Material*>(c << 259 currentMaterial = const_cast<G4Material*> (couple->GetMaterial());
233 fCurrenteEnergy = anEnergy; << 260 currentCoupleIndex = couple->GetIndex();
234 fDirectModel->SetCurrentCouple(couple); << 261 currentMaterialIndex = currentMaterial->GetIndex();
>> 262 current_eEnergy = anEnergy;
235 } 263 }
236 264