| 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: G4BGGPionElasticXS.cc,v 1.1 2007/03/13 15:19:30 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-08-03-patch-01 $
26 // 28 //
27 // ------------------------------------------- 29 // -------------------------------------------------------------------
28 // 30 //
29 // GEANT4 Class file 31 // GEANT4 Class file
30 // 32 //
31 // 33 //
32 // File name: G4BGGPionElasticXS 34 // File name: G4BGGPionElasticXS
33 // 35 //
34 // Author: Vladimir Ivanchenko 36 // Author: Vladimir Ivanchenko
35 // 37 //
36 // Creation date: 01.10.2003 38 // Creation date: 01.10.2003
37 // Modifications: 39 // Modifications:
38 // 40 //
>> 41 //
39 // ------------------------------------------- 42 // -------------------------------------------------------------------
40 // 43 //
41 44
42 #include "G4BGGPionElasticXS.hh" 45 #include "G4BGGPionElasticXS.hh"
43 #include "G4SystemOfUnits.hh" << 46 #include "G4GlauberGribovCrossSection.hh"
44 #include "G4ComponentGGHadronNucleusXsc.hh" <<
45 #include "G4UPiNuclearCrossSection.hh" 47 #include "G4UPiNuclearCrossSection.hh"
46 #include "G4HadronNucleonXsc.hh" <<
47 #include "G4NuclearRadii.hh" <<
48 <<
49 #include "G4Proton.hh" <<
50 #include "G4PionPlus.hh" 48 #include "G4PionPlus.hh"
51 #include "G4PionMinus.hh" 49 #include "G4PionMinus.hh"
52 #include "G4NistManager.hh" 50 #include "G4NistManager.hh"
53 #include "G4HadronicParameters.hh" <<
54 #include "G4Pow.hh" <<
55 <<
56 G4double G4BGGPionElasticXS::theGlauberFacPiPl <<
57 G4double G4BGGPionElasticXS::theCoulombFacPiPl <<
58 G4double G4BGGPionElasticXS::theGlauberFacPiMi <<
59 G4double G4BGGPionElasticXS::theCoulombFacPiMi <<
60 G4int G4BGGPionElasticXS::theA[93] = {0}; <<
61 51
62 //....oooOO0OOooo........oooOO0OOooo........oo 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
63 53
64 G4BGGPionElasticXS::G4BGGPionElasticXS(const G 54 G4BGGPionElasticXS::G4BGGPionElasticXS(const G4ParticleDefinition* p)
65 : G4VCrossSectionDataSet("BarashenkovGlauberG <<
66 { 55 {
67 verboseLevel = 0; 56 verboseLevel = 0;
68 fGlauberEnergy = 91.*CLHEP::GeV; << 57 thEnergy = 100.*GeV;
69 fLowEnergy = 20.*CLHEP::MeV; << 58 if(p == G4PionPlus::PionPlus() || p == G4PionMinus::PionMinus()) {
70 fLowestEnergy = 1.*CLHEP::MeV; << 59 fPion = new G4UPiNuclearCrossSection();
71 SetMinKinEnergy(0.0); << 60 fGlauber = new G4GlauberGribovCrossSection();
72 SetMaxKinEnergy( G4HadronicParameters::Insta << 61 particle = p;
73 << 62 Initialise();
74 fPion = new G4UPiNuclearCrossSection(); << 63 } else {
75 fGlauber = new G4ComponentGGHadronNucleusXsc << 64 fPion = 0;
76 fHadron = new G4HadronNucleonXsc(); << 65 fGlauber = 0;
77 << 66 particle = 0;
78 fG4pow = G4Pow::GetInstance(); << 67 if(p) G4cout << "### G4BGGPionElasticXS WARNING: is not applicable to "
79 << 68 << p->GetParticleName()
80 theProton = G4Proton::Proton(); << 69 << G4endl;
81 thePiPlus = G4PionPlus::PionPlus(); << 70 else G4cout << "### G4BGGPionElasticXS WARNING: particle is not defined "
82 isPiplus = (p == thePiPlus); << 71 << G4endl;
83 SetForAllAtomsAndEnergies(true); << 72 }
84 <<
85 if (0 == theA[0]) { Initialise(); } <<
86 } 73 }
87 74
88 //....oooOO0OOooo........oooOO0OOooo........oo 75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
89 76
90 G4BGGPionElasticXS::~G4BGGPionElasticXS() 77 G4BGGPionElasticXS::~G4BGGPionElasticXS()
91 { 78 {
92 delete fHadron; << 79 delete fGlauber;
93 } << 80 delete fPion;
94 <<
95 //....oooOO0OOooo........oooOO0OOooo........oo <<
96 <<
97 G4bool <<
98 G4BGGPionElasticXS::IsElementApplicable(const <<
99 const <<
100 { <<
101 return true; <<
102 } 81 }
103 82
104 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
105 84
106 G4bool G4BGGPionElasticXS::IsIsoApplicable(con << 85 G4double G4BGGPionElasticXS::GetIsoZACrossSection(const G4DynamicParticle* dp,
107 G4i << 86 G4double Z,
108 con << 87 G4double A,
>> 88 G4double)
109 { 89 {
110 return (1 == Z); <<
111 } <<
112 <<
113 //....oooOO0OOooo........oooOO0OOooo........oo <<
114 <<
115 G4double <<
116 G4BGGPionElasticXS::GetElementCrossSection(con <<
117 G4i <<
118 { <<
119 // this method should be called only for Z > <<
120 G4double cross = 0.0; 90 G4double cross = 0.0;
121 G4double ekin = std::max(dp->GetKineticEnerg << 91 G4double ekin = dp->GetKineticEnergy();
122 G4int Z = std::min(ZZ, 92); << 92 G4int iz = G4int(Z + 0.5);
123 if(1 == Z) { << 93 if(iz > 92) iz = 92;
124 cross = 1.0115*GetIsoCrossSection(dp,1,1); << 94
>> 95 if(ekin > thEnergy) {
>> 96 cross = theFac[iz]*fGlauber->GetElasticGlauberGribov(dp, Z, A);
125 } else { 97 } else {
126 if(ekin <= fLowEnergy) { << 98 cross = fPion->GetElasticCrossSection(dp, Z, A);
127 cross = (isPiplus) ? theCoulombFacPiPlus <<
128 : theCoulombFacPiMinus[Z]*FactorPiMinu <<
129 } else if(ekin > fGlauberEnergy) { <<
130 cross = (isPiplus) ? theGlauberFacPiPlus <<
131 cross *= fGlauber->GetElasticGlauberGrib <<
132 } else { <<
133 cross = fPion->GetElasticCrossSection(dp <<
134 } <<
135 } <<
136 #ifdef G4VERBOSE <<
137 if(verboseLevel > 1) { <<
138 G4cout << "G4BGGPionElasticXS::GetElementC <<
139 << dp->GetDefinition()->GetParticle <<
140 << " Ekin(GeV)= " << dp->GetKineti <<
141 << " in nucleus Z= " << Z << " A= <<
142 << " XS(b)= " << cross/barn <<
143 << G4endl; <<
144 } 99 }
145 #endif << 100
>> 101 if(verboseLevel > 1)
>> 102 G4cout << "G4BGGPionElasticXS::GetCrossSection for "
>> 103 << dp->GetDefinition()->GetParticleName()
>> 104 << " Ekin(GeV)= " << dp->GetKineticEnergy()
>> 105 << " in nucleus Z= " << Z << " A= " << A
>> 106 << " XS(b)= " << cross/barn
>> 107 << G4endl;
>> 108
146 return cross; 109 return cross;
147 } 110 }
148 111
149 //....oooOO0OOooo........oooOO0OOooo........oo 112 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
150 113
151 G4double << 114 void G4BGGPionElasticXS::BuildPhysicsTable(const G4ParticleDefinition&)
152 G4BGGPionElasticXS::GetIsoCrossSection(const G << 115 {
153 G4int, <<
154 const G <<
155 const G <<
156 const G <<
157 { <<
158 // this method should be called only for Z = <<
159 fHadron->HadronNucleonXscNS(dp->GetDefinitio <<
160 dp->GetKineticEn <<
161 G4double cross = A*fHadron->GetElasticHadron <<
162 <<
163 #ifdef G4VERBOSE <<
164 if(verboseLevel > 1) { <<
165 G4cout << "G4BGGPionElasticXS::GetIsoCross <<
166 << dp->GetDefinition()->GetParticle <<
167 << " Ekin(GeV)= " << dp->GetKineti <<
168 << " in nucleus Z=1 A=" << A <<
169 << " XS(b)= " << cross/barn <<
170 << G4endl; <<
171 } <<
172 #endif <<
173 return cross; <<
174 } 116 }
175 117
176 //....oooOO0OOooo........oooOO0OOooo........oo 118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
177 119
178 void G4BGGPionElasticXS::BuildPhysicsTable(con << 120 void G4BGGPionElasticXS::DumpPhysicsTable(const G4ParticleDefinition&)
179 { 121 {
180 if(verboseLevel > 1) { << 122 G4cout << "G4BGGPionElasticXS:"<<G4endl;
181 G4cout << "G4BGGPionElasticXS::BuildPhysic <<
182 << p.GetParticleName() << G4endl; <<
183 } <<
184 if(&p == G4PionPlus::PionPlus() || &p == G4P <<
185 isPiplus = (&p == G4PionPlus::PionPlus()); <<
186 } else { <<
187 G4ExceptionDescription ed; <<
188 ed << "This BGG cross section is applicabl <<
189 << p.GetParticleName() << G4endl; <<
190 G4Exception("G4BGGPionElasticXS::BuildPhys <<
191 FatalException, ed); <<
192 } <<
193 } 123 }
194 124
195 //....oooOO0OOooo........oooOO0OOooo........oo 125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
196 126
197 void G4BGGPionElasticXS::Initialise() << 127 void G4BGGPionElasticXS::Initialise()
198 { 128 {
199 theA[0] = theA[1] = 1; << 129 G4ParticleDefinition* part = const_cast<G4ParticleDefinition*>(particle);
200 G4ThreeVector mom(0.0,0.0,1.0); 130 G4ThreeVector mom(0.0,0.0,1.0);
201 G4DynamicParticle dp(thePiPlus, mom, fGlaube << 131 G4DynamicParticle dp(part, mom, thEnergy);
202 132
203 G4NistManager* nist = G4NistManager::Instanc 133 G4NistManager* nist = G4NistManager::Instance();
>> 134 G4double A = nist->GetAtomicMassAmu(2);
204 135
205 G4double csup, csdn; 136 G4double csup, csdn;
206 for (G4int iz=2; iz<93; ++iz) { <<
207 <<
208 G4int A = G4lrint(nist->GetAtomicMassAmu(i <<
209 theA[iz] = A; <<
210 137
211 csup = fGlauber->GetElasticGlauberGribov(& << 138 if(verboseLevel > 0) G4cout << "### G4BGGPionElasticXS::Initialise for "
212 csdn = fPion->GetElasticCrossSection(&dp, << 139 << particle->GetParticleName() << G4endl;
213 theGlauberFacPiPlus[iz] = csdn/csup; <<
214 } <<
215 <<
216 dp.SetDefinition(G4PionMinus::PionMinus()); <<
217 for (G4int iz=2; iz<93; ++iz) { <<
218 csup = fGlauber->GetElasticGlauberGribov(& <<
219 csdn = fPion->GetElasticCrossSection(&dp, <<
220 theGlauberFacPiMinus[iz] = csdn/csup; <<
221 <<
222 if (verboseLevel > 1) { <<
223 G4cout << "Z= " << iz << " A= " << the <<
224 << " factorPiPlus= " << theGlauberFacPi <<
225 << " factorPiMinus= " << theGlauberFacP <<
226 << G4endl; <<
227 } <<
228 } <<
229 theCoulombFacPiPlus[1] = 1.0; <<
230 theCoulombFacPiMinus[1]= 1.0; <<
231 dp.SetKineticEnergy(fLowEnergy); <<
232 dp.SetDefinition(thePiPlus); <<
233 for (G4int iz=2; iz<93; ++iz) { <<
234 theCoulombFacPiPlus[iz] = fPion->GetElasti <<
235 /CoulombFactorPiPlus(fLowEnergy, iz); <<
236 } <<
237 dp.SetDefinition(G4PionMinus::PionMinus()); <<
238 for(G4int iz=2; iz<93; ++iz) { <<
239 theCoulombFacPiMinus[iz] = fPion->GetElast <<
240 /FactorPiMinus(fLowEnergy); <<
241 <<
242 if(verboseLevel > 1) { <<
243 G4cout << "Z= " << iz << " A= " << the <<
244 << " CoulombFactorPiPlus= " << theCoulo <<
245 << " CoulombFactorPiMinus= " << theCoul <<
246 << G4endl; <<
247 } <<
248 } <<
249 } <<
250 140
251 //....oooOO0OOooo........oooOO0OOooo........oo << 141 for(G4int iz=2; iz<93; iz++) {
252 142
253 G4double G4BGGPionElasticXS::CoulombFactorPiPl << 143 G4double Z = G4double(iz);
254 { << 144 A = nist->GetAtomicMassAmu(iz);
255 return (kinEnergy > 0.0) ? <<
256 G4NuclearRadii::CoulombFactor(Z, theA[Z], <<
257 } <<
258 145
259 //....oooOO0OOooo........oooOO0OOooo........oo << 146 csup = fGlauber->GetElasticGlauberGribov(&dp, Z, A);
>> 147 csdn = fPion->GetElasticCrossSection(&dp, Z, A);
260 148
261 G4double G4BGGPionElasticXS::FactorPiMinus(G4d << 149 theFac[iz] = csdn/csup;
262 { << 150 if(verboseLevel > 0) G4cout << "Z= " << Z << " A= " << A
263 return 1.0/std::sqrt(kinEnergy); << 151 << " factor= " << theFac[iz] << G4endl;
>> 152 }
264 } 153 }
265 154
266 //....oooOO0OOooo........oooOO0OOooo........oo 155 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
267 156
268 void <<
269 G4BGGPionElasticXS::CrossSectionDescription(st <<
270 { <<
271 outFile << "The Barashenkov-Glauber-Gribov c <<
272 << "scattering of pions from nuclei <<
273 << "Barashenkov parameterization is <<
274 << "Glauber-Gribov parameterization <<
275 } <<
276 157
277 //....oooOO0OOooo........oooOO0OOooo........oo <<
278 158