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25 // 25 //
26 // ------------------------------------------- 26 // -------------------------------------------------------------------
27 // 27 //
28 // GEANT4 Class file 28 // GEANT4 Class file
29 // 29 //
30 // 30 //
31 // File name: G4BGGNucleonInelasticXS 31 // File name: G4BGGNucleonInelasticXS
32 // 32 //
33 // Author: Vladimir Ivanchenko 33 // Author: Vladimir Ivanchenko
34 // 34 //
35 // Creation date: 13.03.2007 35 // Creation date: 13.03.2007
36 // Modifications: 36 // Modifications:
37 // 37 //
38 // 38 //
39 // ------------------------------------------- 39 // -------------------------------------------------------------------
40 // 40 //
41 41
42 #include "G4BGGNucleonInelasticXS.hh" 42 #include "G4BGGNucleonInelasticXS.hh"
43 #include "G4SystemOfUnits.hh" 43 #include "G4SystemOfUnits.hh"
44 #include "G4ComponentGGHadronNucleusXsc.hh" 44 #include "G4ComponentGGHadronNucleusXsc.hh"
45 #include "G4NucleonNuclearCrossSection.hh" 45 #include "G4NucleonNuclearCrossSection.hh"
46 #include "G4HadronNucleonXsc.hh" 46 #include "G4HadronNucleonXsc.hh"
47 #include "G4ComponentSAIDTotalXS.hh" 47 #include "G4ComponentSAIDTotalXS.hh"
48 #include "G4Proton.hh" 48 #include "G4Proton.hh"
49 #include "G4Neutron.hh" 49 #include "G4Neutron.hh"
50 #include "G4NistManager.hh" 50 #include "G4NistManager.hh"
51 #include "G4Material.hh" 51 #include "G4Material.hh"
52 #include "G4Element.hh" 52 #include "G4Element.hh"
53 #include "G4Isotope.hh" 53 #include "G4Isotope.hh"
54 #include "G4Log.hh" 54 #include "G4Log.hh"
55 #include "G4Exp.hh" 55 #include "G4Exp.hh"
56 #include "G4NuclearRadii.hh" 56 #include "G4NuclearRadii.hh"
57 57
>> 58 #include "G4CrossSectionDataSetRegistry.hh"
>> 59
58 //....oooOO0OOooo........oooOO0OOooo........oo 60 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59 61
60 namespace << 62 const G4double llog10 = G4Log(10.);
61 { <<
62 const G4double llog10 = G4Log(10.); <<
63 } <<
64 63
65 G4double G4BGGNucleonInelasticXS::theGlauberFa 64 G4double G4BGGNucleonInelasticXS::theGlauberFacP[93] = {0.0};
66 G4double G4BGGNucleonInelasticXS::theCoulombFa 65 G4double G4BGGNucleonInelasticXS::theCoulombFacP[93] = {0.0};
67 G4double G4BGGNucleonInelasticXS::theGlauberFa 66 G4double G4BGGNucleonInelasticXS::theGlauberFacN[93] = {0.0};
68 G4double G4BGGNucleonInelasticXS::theCoulombFa 67 G4double G4BGGNucleonInelasticXS::theCoulombFacN[93] = {0.0};
69 G4int G4BGGNucleonInelasticXS::theA[93] = {0}; << 68 G4int G4BGGNucleonInelasticXS::theA[93] = {0};
>> 69
>> 70 #ifdef G4MULTITHREADED
>> 71 G4Mutex G4BGGNucleonInelasticXS::nucleonInelasticXSMutex = G4MUTEX_INITIALIZER;
>> 72 #endif
70 73
71 G4BGGNucleonInelasticXS::G4BGGNucleonInelastic 74 G4BGGNucleonInelasticXS::G4BGGNucleonInelasticXS(const G4ParticleDefinition* p)
72 : G4VCrossSectionDataSet("BarashenkovGlauberG 75 : G4VCrossSectionDataSet("BarashenkovGlauberGribov")
73 { 76 {
74 verboseLevel = 0; 77 verboseLevel = 0;
75 fGlauberEnergy = 91.*CLHEP::GeV; << 78 fGlauberEnergy = 91.*GeV;
76 fLowEnergy = 14.*CLHEP::MeV; << 79 fLowEnergy = 14.*MeV;
77 80
78 fNucleon = new G4NucleonNuclearCrossSection( << 81 fNucleon = nullptr;
79 fGlauber = new G4ComponentGGHadronNucleusXsc << 82 fGlauber = nullptr;
80 fHadron = new G4HadronNucleonXsc(); << 83 fHadron = nullptr;
81 84
82 theProton= G4Proton::Proton(); 85 theProton= G4Proton::Proton();
83 isProton = (theProton == p); 86 isProton = (theProton == p);
>> 87 isMaster = false;
84 SetForAllAtomsAndEnergies(true); 88 SetForAllAtomsAndEnergies(true);
85 <<
86 if (0 == theA[0]) { Initialise(); } <<
87 } 89 }
88 90
89 //....oooOO0OOooo........oooOO0OOooo........oo 91 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
90 92
91 G4BGGNucleonInelasticXS::~G4BGGNucleonInelasti 93 G4BGGNucleonInelasticXS::~G4BGGNucleonInelasticXS()
92 { 94 {
93 delete fHadron; 95 delete fHadron;
94 } 96 }
95 97
96 //....oooOO0OOooo........oooOO0OOooo........oo 98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
97 99
98 G4bool G4BGGNucleonInelasticXS::IsElementAppli 100 G4bool G4BGGNucleonInelasticXS::IsElementApplicable(const G4DynamicParticle*,
99 101 G4int, const G4Material*)
100 { 102 {
101 return true; 103 return true;
102 } 104 }
103 105
104 //....oooOO0OOooo........oooOO0OOooo........oo 106 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
105 107
106 G4bool G4BGGNucleonInelasticXS::IsIsoApplicabl 108 G4bool G4BGGNucleonInelasticXS::IsIsoApplicable(const G4DynamicParticle*,
107 109 G4int Z, G4int,
108 110 const G4Element*,
109 111 const G4Material*)
110 { 112 {
111 return (1 == Z); 113 return (1 == Z);
112 } 114 }
113 115
114 //....oooOO0OOooo........oooOO0OOooo........oo 116 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
115 117
116 G4double 118 G4double
117 G4BGGNucleonInelasticXS::GetElementCrossSectio 119 G4BGGNucleonInelasticXS::GetElementCrossSection(const G4DynamicParticle* dp,
118 120 G4int ZZ, const G4Material*)
119 { 121 {
120 G4double cross = 0.0; 122 G4double cross = 0.0;
121 G4double ekin = dp->GetKineticEnergy(); 123 G4double ekin = dp->GetKineticEnergy();
122 G4int Z = std::min(ZZ, 92); 124 G4int Z = std::min(ZZ, 92);
123 if (1 == Z) { << 125 if(1 == Z) {
124 cross = 1.0115*GetIsoCrossSection(dp,1,1); 126 cross = 1.0115*GetIsoCrossSection(dp,1,1);
125 } else { 127 } else {
126 if (ekin <= fLowEnergy) { << 128 if(ekin <= fLowEnergy) {
127 cross = CoulombFactor(ekin, Z); << 129 cross = (isProton) ? theCoulombFacP[Z] : theCoulombFacN[Z];
128 cross *= (isProton) ? theCoulombFacP[Z] << 130 cross *= CoulombFactor(ekin, Z);
129 } else if (ekin > fGlauberEnergy) { << 131 } else if(ekin > fGlauberEnergy) {
130 cross = fGlauber->GetInelasticGlauberGri << 132 cross = (isProton) ? theGlauberFacP[Z] : theGlauberFacN[Z];
131 cross *= (isProton) ? theGlauberFacP[Z] << 133 cross *= fGlauber->GetInelasticGlauberGribov(dp, Z, theA[Z]);
132 } else { 134 } else {
133 cross = fNucleon->GetElementCrossSection 135 cross = fNucleon->GetElementCrossSection(dp, Z);
134 } 136 }
135 } 137 }
136 138
137 #ifdef G4VERBOSE << 139 if(verboseLevel > 1) {
138 if (verboseLevel > 1) { <<
139 G4cout << "G4BGGNucleonInelasticXS::GetCro 140 G4cout << "G4BGGNucleonInelasticXS::GetCrossSection for "
140 << dp->GetDefinition()->GetParticle 141 << dp->GetDefinition()->GetParticleName()
141 << " Ekin(GeV)= " << dp->GetKineti 142 << " Ekin(GeV)= " << dp->GetKineticEnergy()/CLHEP::GeV
142 << " in nucleus Z= " << Z << " A= 143 << " in nucleus Z= " << Z << " A= " << theA[Z]
143 << " XS(b)= " << cross/barn 144 << " XS(b)= " << cross/barn
144 << G4endl; 145 << G4endl;
145 } 146 }
146 #endif <<
147 return cross; 147 return cross;
148 } 148 }
149 149
150 //....oooOO0OOooo........oooOO0OOooo........oo 150 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
151 151
152 G4double 152 G4double
153 G4BGGNucleonInelasticXS::GetIsoCrossSection(co 153 G4BGGNucleonInelasticXS::GetIsoCrossSection(const G4DynamicParticle* dp,
154 G4int, << 154 G4int Z, G4int A,
155 const G 155 const G4Isotope*,
156 const G 156 const G4Element*,
157 const G 157 const G4Material*)
158 { 158 {
159 // this method should be called only for Z = 159 // this method should be called only for Z = 1
160 fHadron->HadronNucleonXscNS(dp->GetDefinitio 160 fHadron->HadronNucleonXscNS(dp->GetDefinition(), theProton,
161 dp->GetKineticEnerg 161 dp->GetKineticEnergy());
162 G4double cross = A*fHadron->GetInelasticHadr 162 G4double cross = A*fHadron->GetInelasticHadronNucleonXsc();
163 163
164 #ifdef G4VERBOSE <<
165 if(verboseLevel > 1) { 164 if(verboseLevel > 1) {
166 G4cout << "G4BGGNucleonInelasticXS::GetIso 165 G4cout << "G4BGGNucleonInelasticXS::GetIsoCrossSection for "
167 << dp->GetDefinition()->GetParticle 166 << dp->GetDefinition()->GetParticleName()
168 << " Ekin(GeV)= " << dp->GetKineti 167 << " Ekin(GeV)= " << dp->GetKineticEnergy()/CLHEP::GeV
169 << " in nucleus Z=1 A=" << A << 168 << " in nucleus Z= " << Z << " A= " << theA[Z]
170 << " XS(b)= " << cross/barn 169 << " XS(b)= " << cross/barn
171 << G4endl; 170 << G4endl;
172 } 171 }
173 #endif <<
174 return cross; 172 return cross;
175 } 173 }
176 174
177 //....oooOO0OOooo........oooOO0OOooo........oo 175 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
178 176
179 void G4BGGNucleonInelasticXS::BuildPhysicsTabl 177 void G4BGGNucleonInelasticXS::BuildPhysicsTable(const G4ParticleDefinition& p)
180 { 178 {
>> 179 if(fNucleon) { return; }
181 if(&p == theProton || &p == G4Neutron::Neutr 180 if(&p == theProton || &p == G4Neutron::Neutron()) {
182 isProton = (theProton == &p); 181 isProton = (theProton == &p);
183 } else { 182 } else {
184 G4ExceptionDescription ed; 183 G4ExceptionDescription ed;
185 ed << "This BGG cross section is applicabl 184 ed << "This BGG cross section is applicable only to nucleons and not to "
186 << p.GetParticleName() << G4endl; 185 << p.GetParticleName() << G4endl;
187 G4Exception("G4BGGNucleonInelasticXS::Buil 186 G4Exception("G4BGGNucleonInelasticXS::BuildPhysicsTable", "had001",
188 FatalException, ed); 187 FatalException, ed);
189 return; 188 return;
190 } 189 }
191 } <<
192 <<
193 //....oooOO0OOooo........oooOO0OOooo........oo <<
194 190
195 void G4BGGNucleonInelasticXS::Initialise() << 191 fNucleon = new G4NucleonNuclearCrossSection();
196 { << 192 fGlauber = new G4ComponentGGHadronNucleusXsc();
197 theA[0] = theA[1] = 1; << 193 fHadron = new G4HadronNucleonXsc();
198 G4ThreeVector mom(0.0,0.0,1.0); <<
199 G4DynamicParticle dp(theProton, mom, fGlaube <<
200 <<
201 G4NistManager* nist = G4NistManager::Instanc <<
202 G4double csup, csdn; <<
203 <<
204 for (G4int iz=2; iz<93; ++iz) { <<
205 194
206 G4int A = G4lrint(nist->GetAtomicMassAmu(i << 195 fNucleon->BuildPhysicsTable(p);
207 theA[iz] = A; <<
208 196
209 csup = fGlauber->GetInelasticGlauberGribov << 197 if(0 == theA[0]) {
210 csdn = fNucleon->GetElementCrossSection(&d << 198 #ifdef G4MULTITHREADED
211 theGlauberFacP[iz] = csdn/csup; << 199 G4MUTEXLOCK(&nucleonInelasticXSMutex);
>> 200 if(0 == theA[0]) {
>> 201 #endif
>> 202 isMaster = true;
>> 203 #ifdef G4MULTITHREADED
>> 204 }
>> 205 G4MUTEXUNLOCK(&nucleonInelasticXSMutex);
>> 206 #endif
>> 207 } else {
>> 208 return;
212 } 209 }
213 210
214 dp.SetDefinition(G4Neutron::Neutron()); << 211 if(isMaster && 0 == theA[0]) {
215 for (G4int iz=2; iz<93; ++iz) { <<
216 csup = fGlauber->GetInelasticGlauberGribov <<
217 csdn = fNucleon->GetElementCrossSection(&d <<
218 theGlauberFacN[iz] = csdn/csup; <<
219 212
220 if(verboseLevel > 1) { << 213 theA[0] = theA[1] = 1;
221 G4cout << "G4BGGNucleonInelasticXS::Init << 214 G4ThreeVector mom(0.0,0.0,1.0);
222 << " GFactorP= " << theGlauberFacP[iz] << 215 G4DynamicParticle dp(theProton, mom, fGlauberEnergy);
223 << " GFactorN= " << theGlauberFacN[iz] << 216
>> 217 G4NistManager* nist = G4NistManager::Instance();
>> 218 G4double csup, csdn;
>> 219
>> 220 if(verboseLevel > 0) {
>> 221 G4cout << "### G4BGGNucleonInelasticXS::Initialise for "
>> 222 << p.GetParticleName() << G4endl;
224 } 223 }
225 } << 224 for(G4int iz=2; iz<93; ++iz) {
226 225
227 theCoulombFacP[1] = theCoulombFacN[1] = 1.0; << 226 G4int A = G4lrint(nist->GetAtomicMassAmu(iz));
228 dp.SetDefinition(theProton); << 227 theA[iz] = A;
229 dp.SetKineticEnergy(fLowEnergy); <<
230 for (G4int iz=2; iz<93; ++iz) { <<
231 theCoulombFacP[iz] = fNucleon->GetElementC <<
232 /CoulombFactor(fLowEnergy, iz); <<
233 } <<
234 dp.SetDefinition(G4Neutron::Neutron()); <<
235 for (G4int iz=2; iz<93; ++iz) { <<
236 theCoulombFacN[iz] = fNucleon->GetElementC <<
237 /CoulombFactor(fLowEnergy, iz); <<
238 228
239 if (verboseLevel > 1) { << 229 csup = fGlauber->GetInelasticGlauberGribov(&dp, iz, A);
240 G4cout << "G4BGGNucleonInelasticXS::Init << 230 csdn = fNucleon->GetElementCrossSection(&dp, iz);
241 << " CFactorP= " << theCoulombFacP[iz] << 231 theGlauberFacP[iz] = csdn/csup;
242 << " CFactorN= " << theCoulombFacN[iz] << 232 }
>> 233
>> 234 dp.SetDefinition(G4Neutron::Neutron());
>> 235 for(G4int iz=2; iz<93; ++iz) {
>> 236 csup = fGlauber->GetInelasticGlauberGribov(&dp, iz, theA[iz]);
>> 237 csdn = fNucleon->GetElementCrossSection(&dp, iz);
>> 238 theGlauberFacN[iz] = csdn/csup;
>> 239
>> 240 if(verboseLevel > 0) {
>> 241 G4cout << "Z= " << iz << " A= " << theA[iz]
>> 242 << " GFactorP= " << theGlauberFacP[iz]
>> 243 << " GFactorN= " << theGlauberFacN[iz] << G4endl;
>> 244 }
>> 245 }
>> 246 theCoulombFacP[1] = theCoulombFacN[1] = 1.0;
>> 247 dp.SetDefinition(theProton);
>> 248 dp.SetKineticEnergy(fLowEnergy);
>> 249 for(G4int iz=2; iz<93; ++iz) {
>> 250 theCoulombFacP[iz] = fNucleon->GetElementCrossSection(&dp, iz)
>> 251 /CoulombFactor(fLowEnergy, iz);
>> 252 }
>> 253 dp.SetDefinition(G4Neutron::Neutron());
>> 254 for(G4int iz=2; iz<93; ++iz) {
>> 255 theCoulombFacN[iz] = fNucleon->GetElementCrossSection(&dp, iz)
>> 256 /CoulombFactor(fLowEnergy, iz);
>> 257
>> 258 if(verboseLevel > 0) {
>> 259 G4cout << "Z= " << iz << " A= " << theA[iz]
>> 260 << " CFactorP= " << theCoulombFacP[iz]
>> 261 << " CFactorN= " << theCoulombFacN[iz] << G4endl;
>> 262 }
243 } 263 }
244 } 264 }
245 } 265 }
246 266
247 //....oooOO0OOooo........oooOO0OOooo........oo 267 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
248 268
249 G4double G4BGGNucleonInelasticXS::CoulombFacto 269 G4double G4BGGNucleonInelasticXS::CoulombFactor(G4double kinEnergy, G4int Z)
250 { 270 {
251 G4double res = 0.0; 271 G4double res = 0.0;
252 272
253 if(kinEnergy <= 0.0) { return res; } 273 if(kinEnergy <= 0.0) { return res; }
254 274
255 G4double elog = G4Log(kinEnergy/GeV)/llog10; 275 G4double elog = G4Log(kinEnergy/GeV)/llog10;
256 G4double aa = theA[Z]; 276 G4double aa = theA[Z];
257 277
258 if(isProton) { 278 if(isProton) {
259 279
260 res = G4NuclearRadii::CoulombFactor(Z, aa, << 280 res = G4NuclearRadii::CoulombFactor(Z, theA[Z], theProton, kinEnergy);
261 281
262 // from G4ProtonInelasticCrossSection 282 // from G4ProtonInelasticCrossSection
263 if(res > 0.0) { 283 if(res > 0.0) {
264 G4double ff1 = 5.6 - 0.016*aa; // slope << 284 G4double ff1 = 5.6 - 0.016*aa; // slope of the drop at medium energies.
265 G4double ff2 = 1.37 + 1.37/aa; // start << 285 G4double ff2 = 1.37 + 1.37/aa; // start of the slope.
266 G4double ff3 = 0.8 + 18./aa - 0.002*aa; 286 G4double ff3 = 0.8 + 18./aa - 0.002*aa; // stephight
267 res *= (1.0 + ff3*(1.0 - (1.0/(1+G4Exp(- 287 res *= (1.0 + ff3*(1.0 - (1.0/(1+G4Exp(-ff1*(elog + ff2))))));
268 ff1 = 8. - 8./aa - 0.008*aa; // slope 288 ff1 = 8. - 8./aa - 0.008*aa; // slope of the rise
269 ff2 = 2.34 - 5.4/aa - 0.0028*aa; // star 289 ff2 = 2.34 - 5.4/aa - 0.0028*aa; // start of the rise
270 res /= (1.0 + G4Exp(-ff1*(elog + ff2))); 290 res /= (1.0 + G4Exp(-ff1*(elog + ff2)));
271 } 291 }
272 } else { 292 } else {
273 // from G4NeutronInelasticCrossSection 293 // from G4NeutronInelasticCrossSection
274 G4double p3 = 0.6 + 13./aa - 0.0005*aa; 294 G4double p3 = 0.6 + 13./aa - 0.0005*aa;
275 G4double p4 = 7.2449 - 0.018242*aa; 295 G4double p4 = 7.2449 - 0.018242*aa;
276 G4double p5 = 1.36 + 1.8/aa + 0.0005*aa; 296 G4double p5 = 1.36 + 1.8/aa + 0.0005*aa;
277 G4double p6 = 1. + 200./aa + 0.02*aa; 297 G4double p6 = 1. + 200./aa + 0.02*aa;
278 G4double p7 = 3.0 - (aa-70.)*(aa-200.)/110 298 G4double p7 = 3.0 - (aa-70.)*(aa-200.)/11000.;
279 299
280 G4double firstexp = G4Exp(-p4*(elog + p5) 300 G4double firstexp = G4Exp(-p4*(elog + p5));
281 G4double secondexp = G4Exp(-p6*(elog + p7) 301 G4double secondexp = G4Exp(-p6*(elog + p7));
282 302
283 res = (1. + p3*firstexp/(1. + firstexp))/( << 303 res = (1.+p3*firstexp/(1. + firstexp))/(1. + secondexp);
284 } 304 }
285 return res; 305 return res;
286 } 306 }
287 307
288 //....oooOO0OOooo........oooOO0OOooo........oo 308 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
289 309
290 void G4BGGNucleonInelasticXS::CrossSectionDesc 310 void G4BGGNucleonInelasticXS::CrossSectionDescription(std::ostream& outFile) const
291 { 311 {
292 outFile << "The Barashenkov-Glauber-Gribov c 312 outFile << "The Barashenkov-Glauber-Gribov cross section calculates inelastic\n"
293 << "scattering of protons and neutro 313 << "scattering of protons and neutrons from nuclei using the\n"
294 << "Barashenkov parameterization bel 314 << "Barashenkov parameterization below 91 GeV and the Glauber-Gribov\n"
295 << "parameterization above 91 GeV. 315 << "parameterization above 91 GeV. It uses the G4HadronNucleonXsc\n"
296 << "cross section component for hydr 316 << "cross section component for hydrogen targets, and the\n"
297 << "G4ComponentGGHadronNucleusXsc co 317 << "G4ComponentGGHadronNucleusXsc component for other targets.\n";
298 } 318 }
299 319
300 //....oooOO0OOooo........oooOO0OOooo........oo 320 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
301 321