| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
25 // 25 //
>> 26 // $Id: G4LivermorePolarizedRayleighModel.cc 93810 2015-11-02 11:27:56Z gcosmo $
26 // 27 //
27 // Author: Sebastien Incerti 28 // Author: Sebastien Incerti
28 // 30 October 2008 29 // 30 October 2008
29 // on base of G4LowEnergyPolarizedRayl 30 // on base of G4LowEnergyPolarizedRayleigh developed by R. Capra
30 // 31 //
31 // History: 32 // History:
32 // -------- 33 // --------
33 // 02 May 2009 S Incerti as V. Ivanchenko pr 34 // 02 May 2009 S Incerti as V. Ivanchenko proposed in G4LivermoreRayleighModel.cc
34 // 35 //
35 // Cleanup initialisation and generation of se 36 // Cleanup initialisation and generation of secondaries:
36 // - apply internal high-ener 37 // - apply internal high-energy limit only in constructor
37 // - do not apply low-energy 38 // - do not apply low-energy limit (default is 0)
38 // - remove GetMeanFreePath m 39 // - remove GetMeanFreePath method and table
39 // - remove initialisation of 40 // - remove initialisation of element selector
40 // - use G4ElementSelector 41 // - use G4ElementSelector
41 42
42 #include "G4LivermorePolarizedRayleighModel.hh 43 #include "G4LivermorePolarizedRayleighModel.hh"
43 #include "G4PhysicalConstants.hh" 44 #include "G4PhysicalConstants.hh"
44 #include "G4SystemOfUnits.hh" 45 #include "G4SystemOfUnits.hh"
45 #include "G4LogLogInterpolation.hh" 46 #include "G4LogLogInterpolation.hh"
46 #include "G4CompositeEMDataSet.hh" 47 #include "G4CompositeEMDataSet.hh"
47 #include "G4AutoLock.hh" <<
48 48
49 //....oooOO0OOooo........oooOO0OOooo........oo 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
50 50
51 using namespace std; 51 using namespace std;
52 namespace { G4Mutex LivermorePolarizedRayleigh <<
53 52
54 //....oooOO0OOooo........oooOO0OOooo........oo 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
55 54
56 G4PhysicsFreeVector* G4LivermorePolarizedRayle << 55 G4int G4LivermorePolarizedRayleighModel::maxZ = 100;
57 G4PhysicsFreeVector* G4LivermorePolarizedRayle << 56 G4LPhysicsFreeVector* G4LivermorePolarizedRayleighModel::dataCS[] = {0};
>> 57 G4VEMDataSet* G4LivermorePolarizedRayleighModel::formFactorData = 0;
58 58
59 G4LivermorePolarizedRayleighModel::G4Livermore 59 G4LivermorePolarizedRayleighModel::G4LivermorePolarizedRayleighModel(const G4ParticleDefinition*,
60 const G4String& nam) 60 const G4String& nam)
61 :G4VEmModel(nam),fParticleChange(nullptr),is << 61 :G4VEmModel(nam),fParticleChange(0),isInitialised(false)
62 { 62 {
63 lowEnergyLimit = 250 * CLHEP::eV; << 63 fParticleChange =0;
>> 64 lowEnergyLimit = 250 * eV;
>> 65 //SetLowEnergyLimit(lowEnergyLimit);
>> 66 //SetHighEnergyLimit(highEnergyLimit);
64 // 67 //
65 verboseLevel= 0; 68 verboseLevel= 0;
66 // Verbosity scale: 69 // Verbosity scale:
67 // 0 = nothing 70 // 0 = nothing
68 // 1 = warning for energy non-conservation 71 // 1 = warning for energy non-conservation
69 // 2 = details of energy budget 72 // 2 = details of energy budget
70 // 3 = calculation of cross sections, file o 73 // 3 = calculation of cross sections, file openings, sampling of atoms
71 // 4 = entering in methods 74 // 4 = entering in methods
72 75
73 if(verboseLevel > 0) { 76 if(verboseLevel > 0) {
74 G4cout << "Livermore Polarized Rayleigh is 77 G4cout << "Livermore Polarized Rayleigh is constructed " << G4endl
75 << "Energy range: " << LowEnergyLim << 78 << "Energy range: "
76 << HighEnergyLimit() / CLHEP::GeV << " Ge << 79 << LowEnergyLimit() / eV << " eV - "
77 << G4endl; << 80 << HighEnergyLimit() / GeV << " GeV"
>> 81 << G4endl;
78 } 82 }
79 } 83 }
80 84
81 //....oooOO0OOooo........oooOO0OOooo........oo 85 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
82 86
83 G4LivermorePolarizedRayleighModel::~G4Livermor 87 G4LivermorePolarizedRayleighModel::~G4LivermorePolarizedRayleighModel()
84 { 88 {
85 if(IsMaster()) { << 89 if(IsMaster()) {
86 for(G4int i=0; i<maxZ; ++i) { << 90 for(G4int i=0; i<maxZ; ++i) {
87 if(dataCS[i]) { << 91 if(dataCS[i]) {
88 delete dataCS[i]; << 92 delete dataCS[i];
89 dataCS[i] = nullptr; << 93 dataCS[i] = 0;
90 delete formFactorData[i]; << 94 }
91 formFactorData[i] = nullptr; << 95 }
92 } << 96 delete formFactorData;
93 } << 97 formFactorData = 0;
94 } << 98
>> 99 }
95 } 100 }
96 101
97 //....oooOO0OOooo........oooOO0OOooo........oo 102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
98 103
99 void G4LivermorePolarizedRayleighModel::Initia 104 void G4LivermorePolarizedRayleighModel::Initialise(const G4ParticleDefinition* particle,
100 const G 105 const G4DataVector& cuts)
101 { 106 {
102 // Rayleigh process: Th << 107 // Rayleigh process: The Quantum Theory of Radiation
103 // W. << 108 // W. Heitler, Oxford at the Clarendon Press, Oxford (1954)
104 // Scattering function: A << 109 // Scattering function: A simple model of photon transport
105 // D. << 110 // D.E. Cullen, Nucl. Instr. Meth. in Phys. Res. B 101 (1995) 499-510
106 // Polarization of the outcoming photon: Be << 111 // Polarization of the outcoming photon: Beam test of a prototype detector array for the PoGO astronomical hard X-ray/soft gamma-ray polarimeter
107 // X- << 112 // T. Mizuno et al., Nucl. Instr. Meth. in Phys. Res. A 540 (2005) 158-168
108 // T. << 113
109 if (verboseLevel > 3) 114 if (verboseLevel > 3)
110 G4cout << "Calling G4LivermorePolarizedRay 115 G4cout << "Calling G4LivermorePolarizedRayleighModel::Initialise()" << G4endl;
111 116
>> 117
112 if(IsMaster()) { 118 if(IsMaster()) {
113 119
>> 120 // Form Factor
>> 121
>> 122 G4VDataSetAlgorithm* ffInterpolation = new G4LogLogInterpolation;
>> 123 G4String formFactorFile = "rayl/re-ff-";
>> 124 formFactorData = new G4CompositeEMDataSet(ffInterpolation,1.,1.);
>> 125 formFactorData->LoadData(formFactorFile);
>> 126
114 // Initialise element selector 127 // Initialise element selector
115 InitialiseElementSelectors(particle, cuts) 128 InitialiseElementSelectors(particle, cuts);
116 129
117 // Access to elements 130 // Access to elements
118 const char* path = G4FindDataDir("G4LEDATA << 131 char* path = getenv("G4LEDATA");
119 auto elmTable = G4Element::GetElementTable << 132 G4ProductionCutsTable* theCoupleTable =
120 for (auto const & elm : *elmTable) { << 133 G4ProductionCutsTable::GetProductionCutsTable();
121 G4int Z = std::min(elm->GetZasInt(), max << 134 G4int numOfCouples = theCoupleTable->GetTableSize();
122 if( nullptr == dataCS[Z] ) { ReadData(Z, << 135
123 } << 136 for(G4int i=0; i<numOfCouples; ++i)
>> 137 {
>> 138 const G4MaterialCutsCouple* couple =
>> 139 theCoupleTable->GetMaterialCutsCouple(i);
>> 140 const G4Material* material = couple->GetMaterial();
>> 141 const G4ElementVector* theElementVector = material->GetElementVector();
>> 142 G4int nelm = material->GetNumberOfElements();
>> 143
>> 144 for (G4int j=0; j<nelm; ++j)
>> 145 {
>> 146 G4int Z = G4lrint((*theElementVector)[j]->GetZ());
>> 147 if(Z < 1) { Z = 1; }
>> 148 else if(Z > maxZ) { Z = maxZ; }
>> 149 if( (!dataCS[Z]) ) { ReadData(Z, path); }
>> 150 }
>> 151 }
124 } 152 }
125 153
126 if(isInitialised) { return; } 154 if(isInitialised) { return; }
127 fParticleChange = GetParticleChangeForGamma( 155 fParticleChange = GetParticleChangeForGamma();
128 isInitialised = true; 156 isInitialised = true;
>> 157
129 } 158 }
130 159
131 160
132 //....oooOO0OOooo........oooOO0OOooo........oo 161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
133 162
134 void G4LivermorePolarizedRayleighModel::Initia << 163 void G4LivermorePolarizedRayleighModel::InitialiseLocal(const G4ParticleDefinition*,
135 const G4ParticleDefinition*, G << 164 G4VEmModel* masterModel)
136 { 165 {
137 SetElementSelectors(masterModel->GetElementS 166 SetElementSelectors(masterModel->GetElementSelectors());
138 } 167 }
139 168
140 //....oooOO0OOooo........oooOO0OOooo........oo 169 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
141 170
142 void G4LivermorePolarizedRayleighModel::ReadDa << 171 void G4LivermorePolarizedRayleighModel::ReadData(size_t Z, const char* path)
143 { 172 {
144 if (verboseLevel > 1) { << 173 if (verboseLevel > 1)
145 G4cout << "Calling ReadData() of G4Livermo << 174 {
146 << G4endl; << 175 G4cout << "Calling ReadData() of G4LivermoreRayleighModel"
147 } << 176 << G4endl;
>> 177 }
148 178
149 if(nullptr != dataCS[Z]) { return; } << 179 if(dataCS[Z]) { return; }
150 180
151 const char* datadir = path; 181 const char* datadir = path;
152 182
153 if(nullptr == datadir) << 183 if(!datadir)
154 { 184 {
155 datadir = G4FindDataDir("G4LEDATA"); << 185 datadir = getenv("G4LEDATA");
156 if(nullptr == datadir) << 186 if(!datadir)
157 { 187 {
158 G4Exception("G4LivermoreRayleighModelModel 188 G4Exception("G4LivermoreRayleighModelModel::ReadData()","em0006",
159 FatalException, 189 FatalException,
160 "Environment variable G4LEDATA not d 190 "Environment variable G4LEDATA not defined");
161 return; 191 return;
162 } 192 }
163 } 193 }
164 dataCS[Z] = new G4PhysicsFreeVector(); << 194
165 formFactorData[Z] = new G4PhysicsFreeVector( << 195 //
>> 196
>> 197 dataCS[Z] = new G4LPhysicsFreeVector();
>> 198
>> 199 // Activation of spline interpolation
>> 200 //dataCS[Z] ->SetSpline(true);
166 201
167 std::ostringstream ostCS; 202 std::ostringstream ostCS;
168 ostCS << datadir << "/livermore/rayl/re-cs-" 203 ostCS << datadir << "/livermore/rayl/re-cs-" << Z <<".dat";
169 std::ifstream finCS(ostCS.str().c_str()); 204 std::ifstream finCS(ostCS.str().c_str());
170 205
171 if( !finCS .is_open() ) { << 206 if( !finCS .is_open() )
172 G4ExceptionDescription ed; << 207 {
173 ed << "G4LivermorePolarizedRayleighModel d << 208 G4ExceptionDescription ed;
174 << "> is not opened!" << G4endl; << 209 ed << "G4LivermorePolarizedRayleighModel data file <" << ostCS.str().c_str()
175 G4Exception("G4LivermorePolarizedRayleighM << 210 << "> is not opened!" << G4endl;
176 FatalException, << 211 G4Exception("G4LivermorePolarizedRayleighModel::ReadData()","em0003",FatalException,
177 ed,"G4LEDATA version should be G4EMLOW8.0 << 212 ed,"G4LEDATA version should be G4EMLOW6.27 or later.");
178 return; << 213 return;
179 } else { << 214 }
180 if(verboseLevel > 3) { << 215 else
181 G4cout << "File " << ostCS.str() << 216 {
182 << " is opened by G4LivermoreRayleighMo << 217 if(verboseLevel > 3) {
183 } << 218 G4cout << "File " << ostCS.str()
184 dataCS[Z]->Retrieve(finCS, true); << 219 << " is opened by G4LivermoreRayleighModel" << G4endl;
185 } << 220 }
186 << 221 dataCS[Z]->Retrieve(finCS, true);
187 std::ostringstream ostFF; << 222 }
188 ostFF << datadir << "/livermore/rayl/re-ff-" << 223 }
189 std::ifstream finFF(ostFF.str().c_str()); <<
190 <<
191 if( !finFF.is_open() ) { <<
192 G4ExceptionDescription ed; <<
193 ed << "G4LivermorePolarizedRayleighModel d <<
194 << "> is not opened!" << G4endl; <<
195 G4Exception("G4LivermorePolarizedRayleighM <<
196 FatalException, <<
197 ed,"G4LEDATA version should be G4EMLOW8.0 <<
198 return; <<
199 } else { <<
200 if(verboseLevel > 3) { <<
201 G4cout << "File " << ostFF.str() <<
202 << " is opened by G4LivermoreRa <<
203 } <<
204 formFactorData[Z]->Retrieve(finFF, true); <<
205 } <<
206 } <<
207 224
208 //....oooOO0OOooo........oooOO0OOooo........oo << 225 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
209 226
210 G4double G4LivermorePolarizedRayleighModel::Co << 227 G4double G4LivermorePolarizedRayleighModel::ComputeCrossSectionPerAtom(
211 const 228 const G4ParticleDefinition*,
212 G4double GammaEnergy, 229 G4double GammaEnergy,
213 G4double Z, G4double, 230 G4double Z, G4double,
214 G4double, G4double) 231 G4double, G4double)
215 { << 232 {
216 if (verboseLevel > 1) { << 233 if (verboseLevel > 1)
217 G4cout << "G4LivermoreRayleighModel::Compu << 234 {
218 << G4endl; << 235 G4cout << "G4LivermoreRayleighModel::ComputeCrossSectionPerAtom()"
219 } << 236 << G4endl;
>> 237 }
220 238
221 if(GammaEnergy < lowEnergyLimit) { return 0. << 239 if(GammaEnergy < lowEnergyLimit) { return 0.0; }
>> 240
>> 241 G4double xs = 0.0;
222 242
223 G4double xs = 0.0; << 243 G4int intZ = G4lrint(Z);
224 244
225 G4int intZ = G4lrint(Z); << 245 if(intZ < 1 || intZ > maxZ) { return xs; }
226 if(intZ < 1 || intZ > maxZ) { return xs; } <<
227 246
228 G4PhysicsFreeVector* pv = dataCS[intZ]; << 247 G4LPhysicsFreeVector* pv = dataCS[intZ];
229 248
230 // if element was not initialised << 249 // if element was not initialised
231 // do initialisation safely for MT mode << 250 // do initialisation safely for MT mode
232 if(nullptr == pv) { << 251 if(!pv) {
233 InitialiseForElement(0, intZ); << 252 InitialiseForElement(0, intZ);
234 pv = dataCS[intZ]; << 253 pv = dataCS[intZ];
235 if(nullptr == pv) { return xs; } << 254 if(!pv) { return xs; }
236 } << 255 }
>> 256
>> 257 G4int n = pv->GetVectorLength() - 1;
>> 258 G4double e = GammaEnergy/MeV;
>> 259 if(e >= pv->Energy(n)) {
>> 260 xs = (*pv)[n]/(e*e);
>> 261 } else if(e >= pv->Energy(0)) {
>> 262 xs = pv->Value(e)/(e*e);
>> 263 }
237 264
238 G4int n = G4int(pv->GetVectorLength() - 1); << 265 /* if(verboseLevel > 0)
239 G4double e = GammaEnergy/MeV; << 266 {
240 if(e >= pv->Energy(n)) { << 267 G4cout << "****** DEBUG: tcs value for Z=" << Z << " at energy (MeV)="
241 xs = (*pv)[n]/(e*e); << 268 << e << G4endl;
242 } else if(e >= pv->Energy(0)) { << 269 G4cout << " cs (Geant4 internal unit)=" << xs << G4endl;
243 xs = pv->Value(e)/(e*e); << 270 G4cout << " -> first E*E*cs value in CS data file (iu) =" << (*pv)[0]
244 } << 271 << G4endl;
245 return xs; << 272 G4cout << " -> last E*E*cs value in CS data file (iu) =" << (*pv)[n]
246 } << 273 << G4endl;
>> 274 G4cout << "*********************************************************"
>> 275 << G4endl;
>> 276 }
>> 277 */
>> 278
>> 279 return xs;
>> 280 }
247 281
248 //....oooOO0OOooo........oooOO0OOooo........oo 282 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
249 283
250 void G4LivermorePolarizedRayleighModel::Sample << 284 void G4LivermorePolarizedRayleighModel::SampleSecondaries(std::vector<G4DynamicParticle*>* /*fvect*/,
251 std::vector<G4DynamicParticle* << 285 const G4MaterialCutsCouple* couple,
252 const G4MaterialCutsCouple* couple, << 286 const G4DynamicParticle* aDynamicGamma,
253 const G4DynamicParticle* aDynamicGamma, << 287 G4double,
254 G4double, G4double) << 288 G4double)
255 { 289 {
256 if (verboseLevel > 3) 290 if (verboseLevel > 3)
257 G4cout << "Calling SampleSecondaries() of 291 G4cout << "Calling SampleSecondaries() of G4LivermorePolarizedRayleighModel" << G4endl;
258 292
259 G4double photonEnergy0 = aDynamicGamma->GetK 293 G4double photonEnergy0 = aDynamicGamma->GetKineticEnergy();
260 294
261 if (photonEnergy0 <= lowEnergyLimit) 295 if (photonEnergy0 <= lowEnergyLimit)
262 { 296 {
263 fParticleChange->ProposeTrackStatus(fStopA << 297 fParticleChange->ProposeTrackStatus(fStopAndKill);
264 fParticleChange->SetProposedKineticEnergy( << 298 fParticleChange->SetProposedKineticEnergy(0.);
265 fParticleChange->ProposeLocalEnergyDeposit << 299 fParticleChange->ProposeLocalEnergyDeposit(photonEnergy0);
266 return; << 300 return ;
267 } 301 }
268 302
269 G4ParticleMomentum photonDirection0 = aDynam 303 G4ParticleMomentum photonDirection0 = aDynamicGamma->GetMomentumDirection();
270 304
271 // Select randomly one element in the curren 305 // Select randomly one element in the current material
>> 306 // G4int Z = crossSectionHandler->SelectRandomAtom(couple,photonEnergy0);
272 const G4ParticleDefinition* particle = aDyn 307 const G4ParticleDefinition* particle = aDynamicGamma->GetDefinition();
273 const G4Element* elm = SelectRandomAtom(coup 308 const G4Element* elm = SelectRandomAtom(couple,particle,photonEnergy0);
274 G4int Z = elm->GetZasInt(); << 309 G4int Z = (G4int)elm->GetZ();
275 310
276 G4double outcomingPhotonCosTheta = GenerateC 311 G4double outcomingPhotonCosTheta = GenerateCosTheta(photonEnergy0, Z);
277 G4double outcomingPhotonPhi = GeneratePhi(ou 312 G4double outcomingPhotonPhi = GeneratePhi(outcomingPhotonCosTheta);
278 G4double beta = GeneratePolarizationAngle(); << 313 G4double beta=GeneratePolarizationAngle();
279 314
280 // incomingPhoton reference frame: 315 // incomingPhoton reference frame:
281 // z = versor parallel to the incomingPhoton 316 // z = versor parallel to the incomingPhotonDirection
282 // x = versor parallel to the incomingPhoton 317 // x = versor parallel to the incomingPhotonPolarization
283 // y = defined as z^x 318 // y = defined as z^x
284 319
285 // outgoingPhoton reference frame: 320 // outgoingPhoton reference frame:
286 // z' = versor parallel to the outgoingPhoto 321 // z' = versor parallel to the outgoingPhotonDirection
287 // x' = defined as x-x*z'z' normalized 322 // x' = defined as x-x*z'z' normalized
288 // y' = defined as z'^x' << 323 // y' = defined as z'^x'
>> 324
289 G4ThreeVector z(aDynamicGamma->GetMomentumDi 325 G4ThreeVector z(aDynamicGamma->GetMomentumDirection().unit());
290 G4ThreeVector x(GetPhotonPolarization(*aDyna 326 G4ThreeVector x(GetPhotonPolarization(*aDynamicGamma));
291 G4ThreeVector y(z.cross(x)); 327 G4ThreeVector y(z.cross(x));
292 328
293 // z' = std::cos(phi)*std::sin(theta) << 329 // z' = std::cos(phi)*std::sin(theta) x + std::sin(phi)*std::sin(theta) y + std::cos(theta) z
294 // x + std::sin(phi)*std::sin(theta) y + std <<
295 G4double xDir; 330 G4double xDir;
296 G4double yDir; 331 G4double yDir;
297 G4double zDir; 332 G4double zDir;
298 zDir=outcomingPhotonCosTheta; 333 zDir=outcomingPhotonCosTheta;
299 xDir=std::sqrt(1-outcomingPhotonCosTheta*out 334 xDir=std::sqrt(1-outcomingPhotonCosTheta*outcomingPhotonCosTheta);
300 yDir=xDir; 335 yDir=xDir;
301 xDir*=std::cos(outcomingPhotonPhi); 336 xDir*=std::cos(outcomingPhotonPhi);
302 yDir*=std::sin(outcomingPhotonPhi); 337 yDir*=std::sin(outcomingPhotonPhi);
303 338
304 G4ThreeVector zPrime((xDir*x + yDir*y + zDir 339 G4ThreeVector zPrime((xDir*x + yDir*y + zDir*z).unit());
305 G4ThreeVector xPrime(x.perpPart(zPrime).unit 340 G4ThreeVector xPrime(x.perpPart(zPrime).unit());
306 G4ThreeVector yPrime(zPrime.cross(xPrime)); 341 G4ThreeVector yPrime(zPrime.cross(xPrime));
307 342
308 // outgoingPhotonPolarization is directed as << 343 // outgoingPhotonPolarization is directed as x' std::cos(beta) + y' std::sin(beta)
309 // x' std::cos(beta) + y' std::sin(beta) <<
310 G4ThreeVector outcomingPhotonPolarization(xP 344 G4ThreeVector outcomingPhotonPolarization(xPrime*std::cos(beta) + yPrime*std::sin(beta));
311 345
312 fParticleChange->ProposeMomentumDirection(zP 346 fParticleChange->ProposeMomentumDirection(zPrime);
313 fParticleChange->ProposePolarization(outcomi 347 fParticleChange->ProposePolarization(outcomingPhotonPolarization);
314 fParticleChange->SetProposedKineticEnergy(ph 348 fParticleChange->SetProposedKineticEnergy(photonEnergy0);
>> 349
315 } 350 }
316 351
317 //....oooOO0OOooo........oooOO0OOooo........oo 352 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
318 353
319 G4double G4LivermorePolarizedRayleighModel::Ge << 354 G4double G4LivermorePolarizedRayleighModel::GenerateCosTheta(G4double incomingPhotonEnergy, G4int zAtom) const
320 { 355 {
321 // d sigma 356 // d sigma k0
322 // --------- = r0^2 * pi * F^2(x, Z) * ( 2 357 // --------- = r0^2 * pi * F^2(x, Z) * ( 2 - sin^2 theta) * std::sin (theta), x = ---- std::sin(theta/2)
323 // d theta 358 // d theta hc
324 359
325 // d sigma 360 // d sigma k0 1 - y
326 // --------- = r0^2 * pi * F^2(x, Z) * ( 1 + 361 // --------- = r0^2 * pi * F^2(x, Z) * ( 1 + y^2), x = ---- std::sqrt ( ------- ), y = std::cos(theta)
327 // d y 362 // d y hc 2
328 363
329 // Z 364 // Z
330 // F(x, Z) ~ -------- 365 // F(x, Z) ~ --------
331 // a + bx 366 // a + bx
332 // 367 //
333 // The time to exit from the outer loop grow 368 // The time to exit from the outer loop grows as ~ k0
334 // On pcgeant2 the time is ~ 1 s for k0 ~ 1 369 // On pcgeant2 the time is ~ 1 s for k0 ~ 1 MeV on the oxygen element. A 100 GeV
335 // event will take ~ 10 hours. 370 // event will take ~ 10 hours.
336 // 371 //
337 // On the avarage the inner loop does 1.5 it 372 // On the avarage the inner loop does 1.5 iterations before exiting
338 const G4double xxfact = CLHEP::cm/(CLHEP::h_ << 373
339 const G4double xFactor = incomingPhotonEnerg << 374 const G4double xFactor = (incomingPhotonEnergy*cm)/(h_Planck*c_light);
>> 375 //const G4VEMDataSet * formFactorData = GetScatterFunctionData();
340 376
341 G4double cosTheta; 377 G4double cosTheta;
342 G4double fCosTheta; 378 G4double fCosTheta;
343 G4double x; 379 G4double x;
344 G4double fValue; 380 G4double fValue;
345 381
346 if (incomingPhotonEnergy > 5.*CLHEP::MeV) << 382 if (incomingPhotonEnergy > 5.*MeV)
347 { 383 {
348 cosTheta = 1.; 384 cosTheta = 1.;
349 } 385 }
350 else 386 else
351 { 387 {
352 do 388 do
353 { 389 {
354 do 390 do
355 { 391 {
356 cosTheta = 2.*G4UniformRand()-1.; 392 cosTheta = 2.*G4UniformRand()-1.;
357 fCosTheta = (1.+cosTheta*cosTheta)/2.; 393 fCosTheta = (1.+cosTheta*cosTheta)/2.;
358 } 394 }
359 while (fCosTheta < G4UniformRand()); 395 while (fCosTheta < G4UniformRand());
360 396
361 x = xFactor*std::sqrt((1.-cosTheta)/2.); 397 x = xFactor*std::sqrt((1.-cosTheta)/2.);
362 398
363 if (x > 1.e+005) 399 if (x > 1.e+005)
364 fValue = formFactorData[Z]->Value(x); << 400 fValue = formFactorData->FindValue(x, zAtom-1);
365 else 401 else
366 fValue = formFactorData[Z]->Value(0.); << 402 fValue = formFactorData->FindValue(0., zAtom-1);
367 403
368 fValue /= Z; << 404 fValue/=zAtom;
369 fValue *= fValue; << 405 fValue*=fValue;
370 } 406 }
371 while(fValue < G4UniformRand()); 407 while(fValue < G4UniformRand());
372 } 408 }
373 409
374 return cosTheta; 410 return cosTheta;
375 } 411 }
376 412
377 //....oooOO0OOooo........oooOO0OOooo........oo 413 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
378 414
379 G4double G4LivermorePolarizedRayleighModel::Ge 415 G4double G4LivermorePolarizedRayleighModel::GeneratePhi(G4double cosTheta) const
380 { 416 {
381 // d sigma 417 // d sigma
382 // --------- = alpha * ( 1 - sin^2 (theta) * 418 // --------- = alpha * ( 1 - sin^2 (theta) * cos^2 (phi) )
383 // d phi 419 // d phi
384 420
385 // On the average the loop takes no more tha 421 // On the average the loop takes no more than 2 iterations before exiting
386 422
387 G4double phi; 423 G4double phi;
388 G4double cosPhi; 424 G4double cosPhi;
389 G4double phiProbability; 425 G4double phiProbability;
390 G4double sin2Theta; 426 G4double sin2Theta;
391 427
392 sin2Theta=1.-cosTheta*cosTheta; 428 sin2Theta=1.-cosTheta*cosTheta;
393 429
394 do 430 do
395 { 431 {
396 phi = CLHEP::twopi * G4UniformRand(); << 432 phi = twopi * G4UniformRand();
397 cosPhi = std::cos(phi); 433 cosPhi = std::cos(phi);
398 phiProbability= 1. - sin2Theta*cosPhi*co 434 phiProbability= 1. - sin2Theta*cosPhi*cosPhi;
399 } 435 }
400 while (phiProbability < G4UniformRand()); 436 while (phiProbability < G4UniformRand());
401 437
402 return phi; 438 return phi;
403 } 439 }
404 440
405 //....oooOO0OOooo........oooOO0OOooo........oo 441 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
406 442
407 G4double G4LivermorePolarizedRayleighModel::Ge 443 G4double G4LivermorePolarizedRayleighModel::GeneratePolarizationAngle(void) const
408 { 444 {
409 // Rayleigh polarization is always on the x' 445 // Rayleigh polarization is always on the x' direction
>> 446
410 return 0; 447 return 0;
411 } 448 }
412 449
413 //....oooOO0OOooo........oooOO0OOooo........oo 450 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
414 451
415 G4ThreeVector G4LivermorePolarizedRayleighMode 452 G4ThreeVector G4LivermorePolarizedRayleighModel::GetPhotonPolarization(const G4DynamicParticle& photon)
416 { 453 {
417 // From G4VLowEnergyDiscretePhotonProcess.cc << 454
>> 455 // SI - From G4VLowEnergyDiscretePhotonProcess.cc
>> 456
418 G4ThreeVector photonMomentumDirection; 457 G4ThreeVector photonMomentumDirection;
419 G4ThreeVector photonPolarization; 458 G4ThreeVector photonPolarization;
420 459
421 photonPolarization = photon.GetPolarization( 460 photonPolarization = photon.GetPolarization();
422 photonMomentumDirection = photon.GetMomentum 461 photonMomentumDirection = photon.GetMomentumDirection();
423 462
424 if ((!photonPolarization.isOrthogonal(photon 463 if ((!photonPolarization.isOrthogonal(photonMomentumDirection, 1e-6)) || photonPolarization.mag()==0.)
425 { 464 {
426 // if |photonPolarization|==0. or |photo 465 // if |photonPolarization|==0. or |photonPolarization * photonDirection0| > 1e-6 * |photonPolarization ^ photonDirection0|
427 // then polarization is choosen randomly << 466 // then polarization is choosen randomly.
>> 467
428 G4ThreeVector e1(photonMomentumDirection 468 G4ThreeVector e1(photonMomentumDirection.orthogonal().unit());
429 G4ThreeVector e2(photonMomentumDirection 469 G4ThreeVector e2(photonMomentumDirection.cross(e1).unit());
430 470
431 G4double angle(G4UniformRand() * CLHEP:: << 471 G4double angle(G4UniformRand() * twopi);
432 472
433 e1*=std::cos(angle); 473 e1*=std::cos(angle);
434 e2*=std::sin(angle); 474 e2*=std::sin(angle);
435 475
436 photonPolarization=e1+e2; 476 photonPolarization=e1+e2;
437 } 477 }
438 else if (photonPolarization.howOrthogonal(ph 478 else if (photonPolarization.howOrthogonal(photonMomentumDirection) != 0.)
439 { 479 {
440 // if |photonPolarization * photonDirect 480 // if |photonPolarization * photonDirection0| != 0.
441 // then polarization is made orthonormal << 481 // then polarization is made orthonormal;
>> 482
442 photonPolarization=photonPolarization.pe 483 photonPolarization=photonPolarization.perpPart(photonMomentumDirection);
443 } 484 }
444 485
445 return photonPolarization.unit(); 486 return photonPolarization.unit();
446 } 487 }
447 488
448 //....oooOO0OOooo........oooOO0OOooo........oo 489 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
449 490
450 void G4LivermorePolarizedRayleighModel::Initia << 491 #include "G4AutoLock.hh"
451 const G4ParticleDefinition*, G << 492 namespace { G4Mutex LivermorePolarizedRayleighModelMutex = G4MUTEX_INITIALIZER; }
452 { << 493
453 G4AutoLock l(&LivermorePolarizedRayleighMode << 494 void G4LivermorePolarizedRayleighModel::InitialiseForElement(const G4ParticleDefinition*,
454 if(nullptr == dataCS[Z]) { ReadData(Z); } << 495 G4int Z)
455 l.unlock(); << 496 {
456 } << 497 G4AutoLock l(&LivermorePolarizedRayleighModelMutex);
>> 498 // G4cout << "G4LivermoreRayleighModel::InitialiseForElement Z= "
>> 499 // << Z << G4endl;
>> 500 if(!dataCS[Z]) { ReadData(Z); }
>> 501 l.unlock();
>> 502 }
457 503