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25 // 25 //
26 <<
27 #include "G4AdjointPhotoElectricModel.hh" 26 #include "G4AdjointPhotoElectricModel.hh"
28 <<
29 #include "G4AdjointCSManager.hh" 27 #include "G4AdjointCSManager.hh"
>> 28
>> 29
>> 30 #include "G4Integrator.hh"
>> 31 #include "G4TrackStatus.hh"
>> 32 #include "G4ParticleChange.hh"
30 #include "G4AdjointElectron.hh" 33 #include "G4AdjointElectron.hh"
>> 34 #include "G4Gamma.hh"
31 #include "G4AdjointGamma.hh" 35 #include "G4AdjointGamma.hh"
32 #include "G4Gamma.hh" <<
33 #include "G4ParticleChange.hh" <<
34 #include "G4PEEffectFluoModel.hh" <<
35 #include "G4PhysicalConstants.hh" <<
36 #include "G4TrackStatus.hh" <<
37 36
38 ////////////////////////////////////////////// 37 ////////////////////////////////////////////////////////////////////////////////
39 G4AdjointPhotoElectricModel::G4AdjointPhotoEle << 38 //
40 : G4VEmAdjointModel("AdjointPEEffect") << 39 G4AdjointPhotoElectricModel::G4AdjointPhotoElectricModel():
41 << 40 G4VEmAdjointModel("AdjointPEEffect")
42 { << 41
43 SetUseMatrix(false); << 42 { SetUseMatrix(false);
44 SetApplyCutInRange(false); << 43 current_eEnergy =0.;
45 << 44 totAdjointCS=0.;
46 fAdjEquivDirectPrimPart = G4AdjointGamma:: <<
47 fAdjEquivDirectSecondPart = G4AdjointElectro <<
48 fDirectPrimaryPart = G4Gamma::Gamma() <<
49 fSecondPartSameType = false; <<
50 fDirectModel = new G4PEEffectFl <<
51 } 45 }
52 <<
53 ////////////////////////////////////////////// <<
54 G4AdjointPhotoElectricModel::~G4AdjointPhotoEl <<
55 <<
56 ////////////////////////////////////////////// 46 ////////////////////////////////////////////////////////////////////////////////
57 void G4AdjointPhotoElectricModel::SampleSecond << 47 //
58 const G4Track& aTrack, G4bool isScatProjToPr << 48 G4AdjointPhotoElectricModel::~G4AdjointPhotoElectricModel()
59 G4ParticleChange* fParticleChange) << 49 {;}
60 { << 50
61 if(isScatProjToProj) << 51 ////////////////////////////////////////////////////////////////////////////////
62 return; << 52 //
63 << 53 void G4AdjointPhotoElectricModel::SampleSecondaries(const G4Track& aTrack,
64 // Compute the fTotAdjointCS vectors if not << 54 G4bool IsScatProjToProjCase,
65 // couple and electron energy << 55 G4ParticleChange* fParticleChange)
66 const G4DynamicParticle* aDynPart = aTrack.G << 56 { if (IsScatProjToProjCase) return ;
67 G4double electronEnergy = aDynPart << 57
68 G4ThreeVector electronDirection = aDynPart << 58 //Compute the totAdjointCS vectors if not already done for the current couple and electron energy
69 fPreStepAdjointCS = << 59 const G4MaterialCutsCouple* aCouple = aTrack.GetMaterialCutsCouple();
70 fTotAdjointCS; // The last computed CS wa << 60 const G4DynamicParticle* aDynPart = aTrack.GetDynamicParticle() ;
71 AdjointCrossSection(aTrack.GetMaterialCutsCo << 61 G4double electronEnergy = aDynPart->GetKineticEnergy();
72 isScatProjToProj); << 62 G4ThreeVector electronDirection= aDynPart->GetMomentumDirection() ;
73 fPostStepAdjointCS = fTotAdjointCS; << 63 totAdjointCS = AdjointCrossSection(aCouple, electronEnergy,IsScatProjToProjCase);
74 << 64
75 // Sample element << 65
76 const G4ElementVector* theElementVector = << 66 //Sample gamma energy
77 fCurrentMaterial->GetElementVector(); << 67 //-------------
78 size_t nelm = fCurrentMaterial->GetNumb << 68 /////////////////////////////////////////////////////////////////////////////////
79 G4double rand_CS = G4UniformRand() * fXsec[n << 69 // Module: G4ContinuousGainOfEnergy.hh
80 for(fIndexElement = 0; fIndexElement < nelm << 70 // Author: L. Desorgher
81 { << 71 // Date: 1 September 2007
82 if(rand_CS < fXsec[fIndexElement]) << 72 // Organisation: SpaceIT GmbH
83 break; << 73 // Customer: ESA/ESTEC
84 } << 74 /////////////////////////////////////////////////////////////////////////////////
85 << 75 //
86 // Sample shell and binding energy << 76 // CHANGE HISTORY
87 G4int nShells = (*theElementVector)[fIndexEl << 77 // --------------
88 rand_CS = fShellProb[fIndexElement][nS << 78 // ChangeHistory:
89 G4int i; << 79 // 1 September 2007 creation by L. Desorgher
90 for(i = 0; i < nShells - 1; ++i) << 80 //
91 { << 81 //-------------------------------------------------------------
92 if(rand_CS < fShellProb[fIndexElement][i]) << 82 // Documentation:
93 break; << 83 // Modell for the adjoint compton scattering
94 } << 84 //
95 G4double gammaEnergy = << 85
96 electronEnergy + (*theElementVector)[fInde << 86 //Sample element
97 << 87 //-------------
98 // Sample cos theta << 88 const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
99 // Copy of the G4PEEfectFluoModel cos theta << 89 const G4double* theAtomNumDensityVector = currentMaterial->GetVecNbOfAtomsPerVolume();
100 // ElecCosThetaDistribution. This method can << 90 size_t nelm = currentMaterial->GetNumberOfElements();
101 // G4PEEffectFluoModel because it is a frien << 91 G4double rand_CS= totAdjointCS*G4UniformRand();
102 G4double cos_theta = 1.; << 92 for (index_element=0; index_element<nelm-1; index_element++){
103 G4double gamma = 1. + electronEnergy / e << 93 if (rand_CS<xsec[index_element]) break;
104 if(gamma <= 5.) << 94 }
105 { << 95
106 G4double beta = std::sqrt(gamma * gamma - << 96 //Sample shell and binding energy
107 G4double b = 0.5 * gamma * (gamma - 1.) << 97 //-------------
108 << 98 rand_CS= totAdjointCS*G4UniformRand()/theAtomNumDensityVector[index_element];
109 G4double rndm, term, greject, grejsup; << 99 G4int nShells = (*theElementVector)[index_element]->GetNbOfAtomicShells();
110 if(gamma < 2.) << 100 G4int i = 0;
111 grejsup = gamma * gamma * (1. + b - beta << 101 for (i=0; i<nShells-1; i++){
112 else << 102 if (rand_CS<shell_prob[index_element][i]) break;
113 grejsup = gamma * gamma * (1. + b + beta << 103 }
114 << 104 G4double gammaEnergy= electronEnergy+(*theElementVector)[index_element]->GetAtomicShell(i);
115 do << 105
116 { << 106 //Sample cos theta
117 rndm = 1. - 2. * G4UniformRand(); << 107 //Copy of the G4PEEffectModel cos theta sampling method ElecCosThetaDistribution.
118 cos_theta = (rndm + beta) / (rndm * beta << 108 //This method cannot be used directly from G4PEEffectModel because it is a friend method. I should ask Vladimir to change that
119 term = 1. - beta * cos_theta; << 109 //------------------------------------------------------------------------------------------------
120 greject = (1. - cos_theta * cos_theta) * << 110 //G4double cos_theta = theDirectPEEffectModel->ElecCosThetaDistribution(electronEnergy);
121 // Loop checking, 07-Aug-2015, Vladimir << 111
122 } while(greject < G4UniformRand() * grejsu << 112 G4double cos_theta = 1.;
>> 113 G4double gamma = 1. + electronEnergy/electron_mass_c2;
>> 114 if (gamma <= 5.) {
>> 115 G4double beta = std::sqrt(gamma*gamma-1.)/gamma;
>> 116 G4double b = 0.5*gamma*(gamma-1.)*(gamma-2);
>> 117
>> 118 G4double rndm,term,greject,grejsup;
>> 119 if (gamma < 2.) grejsup = gamma*gamma*(1.+b-beta*b);
>> 120 else grejsup = gamma*gamma*(1.+b+beta*b);
>> 121
>> 122 do { rndm = 1.-2*G4UniformRand();
>> 123 cos_theta = (rndm+beta)/(rndm*beta+1.);
>> 124 term = 1.-beta*cos_theta;
>> 125 greject = (1.-cos_theta*cos_theta)*(1.+b*term)/(term*term);
>> 126 } while(greject < G4UniformRand()*grejsup);
123 } 127 }
124 << 128
125 // direction of the adjoint gamma electron 129 // direction of the adjoint gamma electron
126 G4double sin_theta = std::sqrt(1. - cos_thet << 130 //---------------------------------------
127 G4double phi = twopi * G4UniformRand() << 131
128 G4double dirx = sin_theta * std::cos(ph << 132
129 G4double diry = sin_theta * std::sin(ph << 133 G4double sin_theta = std::sqrt(1.-cos_theta*cos_theta);
130 G4double dirz = cos_theta; << 134 G4double Phi = twopi * G4UniformRand();
131 G4ThreeVector adjoint_gammaDirection(dirx, d << 135 G4double dirx = sin_theta*std::cos(Phi),diry = sin_theta*std::sin(Phi),dirz = cos_theta;
>> 136 G4ThreeVector adjoint_gammaDirection(dirx,diry,dirz);
132 adjoint_gammaDirection.rotateUz(electronDire 137 adjoint_gammaDirection.rotateUz(electronDirection);
133 << 138
134 // Weight correction << 139
135 CorrectPostStepWeight(fParticleChange, aTrac << 140
136 gammaEnergy, isScatPro << 141 //Weight correction
137 << 142 //-----------------------
138 // Create secondary and modify fParticleChan << 143 CorrectPostStepWeight(fParticleChange, aTrack.GetWeight(), electronEnergy,gammaEnergy);
139 G4DynamicParticle* anAdjointGamma = new G4Dy << 144
140 G4AdjointGamma::AdjointGamma(), adjoint_ga << 145
141 << 146
>> 147 //Create secondary and modify fParticleChange
>> 148 //--------------------------------------------
>> 149 G4DynamicParticle* anAdjointGamma = new G4DynamicParticle (
>> 150 G4AdjointGamma::AdjointGamma(),adjoint_gammaDirection, gammaEnergy);
142 fParticleChange->ProposeTrackStatus(fStopAnd 151 fParticleChange->ProposeTrackStatus(fStopAndKill);
143 fParticleChange->AddSecondary(anAdjointGamma 152 fParticleChange->AddSecondary(anAdjointGamma);
144 } << 153
>> 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 <<
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 } <<
163 157
164 ////////////////////////////////////////////// << 158 }
165 G4double G4AdjointPhotoElectricModel::AdjointC <<
166 const G4MaterialCutsCouple* aCouple, G4doubl <<
167 G4bool isScatProjToProj) <<
168 { <<
169 if(isScatProjToProj) <<
170 return 0.; <<
171 <<
172 G4double totBiasedAdjointCS = 0.; <<
173 if(aCouple != fCurrentCouple || fCurrenteEne <<
174 { <<
175 fTotAdjointCS = 0.; <<
176 DefineCurrentMaterialAndElectronEnergy(aCo <<
177 const G4ElementVector* theElementVector = <<
178 fCurrentMaterial->GetElementVector(); <<
179 const G4double* theAtomNumDensityVector = <<
180 fCurrentMaterial->GetVecNbOfAtomsPerVolu <<
181 size_t nelm = fCurrentMaterial->GetNumberO <<
182 for(fIndexElement = 0; fIndexElement < nel <<
183 { <<
184 fTotAdjointCS += AdjointCrossSectionPerA <<
185 (*theElementVector)[f <<
186 theAtomNumDensityVector <<
187 fXsec[fIndexElement] = fTotAdjointCS; <<
188 } <<
189 159
190 totBiasedAdjointCS = std::min(fTotAdjointC << 160 ////////////////////////////////////////////////////////////////////////////////
191 fFactorCSBiasing = totBiasedAdjointCS / << 161 //
192 } << 162
193 return totBiasedAdjointCS; << 163 G4double G4AdjointPhotoElectricModel::AdjointCrossSection(const G4MaterialCutsCouple* aCouple,
>> 164 G4double electronEnergy,
>> 165 G4bool IsScatProjToProjCase)
>> 166 { if (IsScatProjToProjCase) return 0.;
>> 167 if (aCouple !=currentCouple || current_eEnergy !=electronEnergy) {
>> 168 totAdjointCS = 0.;
>> 169 DefineCurrentMaterialAndElectronEnergy(aCouple, electronEnergy);
>> 170 const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
>> 171 const G4double* theAtomNumDensityVector = currentMaterial->GetVecNbOfAtomsPerVolume();
>> 172 size_t nelm = currentMaterial->GetNumberOfElements();
>> 173 for (index_element=0;index_element<nelm;index_element++){
>> 174
>> 175 totAdjointCS +=AdjointCrossSectionPerAtom((*theElementVector)[index_element],electronEnergy)*theAtomNumDensityVector[index_element];
>> 176 xsec[index_element] = totAdjointCS;
>> 177 }
>> 178 }
>> 179 return totAdjointCS;
>> 180
>> 181
194 } 182 }
195 <<
196 ////////////////////////////////////////////// 183 ////////////////////////////////////////////////////////////////////////////////
197 G4double G4AdjointPhotoElectricModel::AdjointC << 184 //
198 const G4Element* anElement, G4double electro << 185
199 { << 186 G4double G4AdjointPhotoElectricModel::AdjointCrossSectionPerAtom(const G4Element* anElement,G4double electronEnergy)
200 G4int nShells = anElement->GetNbOfAto << 187 {
201 G4double Z = anElement->GetZ(); << 188 G4int nShells = anElement->GetNbOfAtomicShells();
202 G4double gammaEnergy = electronEnergy + anEl << 189 G4double Z= anElement->GetZ();
203 G4double CS = fDirectModel->Compute << 190 G4double N= anElement->GetN();
204 G4Gamma::Gamma(), gammaEnergy, Z, 0., 0., << 191 G4int i = 0;
205 G4double adjointCS = 0.; << 192 G4double B0=anElement->GetAtomicShell(0);
206 if(CS > 0.) << 193 G4double gammaEnergy = electronEnergy+B0;
207 adjointCS += CS / gammaEnergy; << 194 G4double adjointCS = theDirectPEEffectModel->ComputeCrossSectionPerAtom(G4Gamma::Gamma(),gammaEnergy,Z,N,0.,0.)*electronEnergy/gammaEnergy;
208 fShellProb[fIndexElement][0] = adjointCS; << 195 shell_prob[index_element][0] = adjointCS;
209 for(G4int i = 1; i < nShells; ++i) << 196 for (i=1;i<nShells;i++){
210 { << 197 //G4cout<<i<<std::endl;
211 G4double Bi1 = anElement->GetAtomicShell(i << 198 G4double Bi_= anElement->GetAtomicShell(i-1);
212 G4double Bi = anElement->GetAtomicShell(i << 199 G4double Bi = anElement->GetAtomicShell(i);
213 if(electronEnergy < Bi1 - Bi) << 200 //G4cout<<Bi_<<'\t'<<Bi<<std::endl;
214 { << 201 if (electronEnergy <Bi_-Bi) {
215 gammaEnergy = electronEnergy + Bi; << 202 gammaEnergy = electronEnergy+Bi;
216 CS = fDirectModel->ComputeCross << 203 adjointCS +=theDirectPEEffectModel->ComputeCrossSectionPerAtom(G4Gamma::Gamma(),gammaEnergy,anElement->GetZ(),N,0.,0.)*electronEnergy/gammaEnergy;
217 << 204 }
218 if(CS > 0.) << 205 shell_prob[index_element][i] = adjointCS;
219 adjointCS += CS / gammaEnergy; << 206
220 } <<
221 fShellProb[fIndexElement][i] = adjointCS; <<
222 } 207 }
223 adjointCS *= electronEnergy; << 208
224 return adjointCS; 209 return adjointCS;
225 } << 210
226 << 211 }
227 ////////////////////////////////////////////// 212 ////////////////////////////////////////////////////////////////////////////////
228 void G4AdjointPhotoElectricModel::DefineCurren << 213 //
229 const G4MaterialCutsCouple* couple, G4double << 214
230 { << 215 void G4AdjointPhotoElectricModel::DefineCurrentMaterialAndElectronEnergy(const G4MaterialCutsCouple* couple, G4double anEnergy)
231 fCurrentCouple = const_cast<G4MaterialCuts << 216 { currentCouple = const_cast<G4MaterialCutsCouple*> (couple);
232 fCurrentMaterial = const_cast<G4Material*>(c << 217 currentMaterial = const_cast<G4Material*> (couple->GetMaterial());
233 fCurrenteEnergy = anEnergy; << 218 currentCoupleIndex = couple->GetIndex();
234 fDirectModel->SetCurrentCouple(couple); << 219 currentMaterialIndex = currentMaterial->GetIndex();
>> 220 current_eEnergy = anEnergy;
235 } 221 }
236 222