| 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 // 26 //
>> 27 // $Id: G4QuasiElasticChannel.cc 91859 2015-08-07 13:58:30Z gcosmo $
27 // 28 //
28 29
29 // Author : Gunter Folger March 2007 30 // Author : Gunter Folger March 2007
30 // Modified by Mikhail Kossov. Apr2009, E/M co 31 // Modified by Mikhail Kossov. Apr2009, E/M conservation: ResidualNucleus is added (ResNuc)
31 // Class Description 32 // Class Description
32 // Final state production model for theoretica 33 // Final state production model for theoretical models of hadron inelastic
33 // quasi elastic scattering in geant4; 34 // quasi elastic scattering in geant4;
34 // Class Description - End 35 // Class Description - End
35 // 36 //
36 // Modified: 37 // Modified:
37 // 20110805 M. Kelsey -- Follow change to G4V 38 // 20110805 M. Kelsey -- Follow change to G4V3DNucleus::GetNucleons()
38 // 20110808 M. Kelsey -- Move #includes from 39 // 20110808 M. Kelsey -- Move #includes from .hh, add many missing
39 40
40 #include "G4QuasiElasticChannel.hh" 41 #include "G4QuasiElasticChannel.hh"
41 42
42 #include "G4Fancy3DNucleus.hh" 43 #include "G4Fancy3DNucleus.hh"
43 #include "G4DynamicParticle.hh" 44 #include "G4DynamicParticle.hh"
44 #include "G4HadTmpUtil.hh" /* lrint */ 45 #include "G4HadTmpUtil.hh" /* lrint */
45 #include "G4KineticTrack.hh" 46 #include "G4KineticTrack.hh"
46 #include "G4KineticTrackVector.hh" 47 #include "G4KineticTrackVector.hh"
47 #include "G4LorentzVector.hh" 48 #include "G4LorentzVector.hh"
48 #include "G4Neutron.hh" 49 #include "G4Neutron.hh"
49 #include "G4Nucleon.hh" 50 #include "G4Nucleon.hh"
50 #include "G4Nucleus.hh" 51 #include "G4Nucleus.hh"
51 #include "G4ParticleDefinition.hh" 52 #include "G4ParticleDefinition.hh"
52 #include "G4ParticleTable.hh" 53 #include "G4ParticleTable.hh"
53 #include "G4IonTable.hh" 54 #include "G4IonTable.hh"
54 #include "G4QuasiElRatios.hh" 55 #include "G4QuasiElRatios.hh"
55 #include "globals.hh" 56 #include "globals.hh"
56 #include <vector> 57 #include <vector>
57 #include "G4PhysicsModelCatalog.hh" <<
58 58
59 //#define debug_scatter 59 //#define debug_scatter
60 60
61 61
62 G4QuasiElasticChannel::G4QuasiElasticChannel() 62 G4QuasiElasticChannel::G4QuasiElasticChannel()
63 : G4HadronicInteraction("QuasiElastic"), << 63 : theQuasiElastic(new G4QuasiElRatios),
64 theQuasiElastic(new G4QuasiElRatios), << 64 the3DNucleus(new G4Fancy3DNucleus) {
65 the3DNucleus(new G4Fancy3DNucleus), <<
66 secID(-1) { <<
67 secID = G4PhysicsModelCatalog::GetModelID( " <<
68 } 65 }
69 66
70 G4QuasiElasticChannel::~G4QuasiElasticChannel( 67 G4QuasiElasticChannel::~G4QuasiElasticChannel()
71 { 68 {
72 delete the3DNucleus; 69 delete the3DNucleus;
73 delete theQuasiElastic; 70 delete theQuasiElastic;
74 } 71 }
75 72
76 G4double G4QuasiElasticChannel::GetFraction(G4 73 G4double G4QuasiElasticChannel::GetFraction(G4Nucleus &theNucleus,
77 const G4DynamicParticle & thePrimary) 74 const G4DynamicParticle & thePrimary)
78 { 75 {
79 #ifdef debug_scatter 76 #ifdef debug_scatter
80 G4cout << "G4QuasiElasticChannel:: P=" < 77 G4cout << "G4QuasiElasticChannel:: P=" << thePrimary.GetTotalMomentum()
81 << ", pPDG=" << thePrimary.GetDef 78 << ", pPDG=" << thePrimary.GetDefinition()->GetPDGEncoding()
82 << ", Z = " << theNucleus.GetZ_a 79 << ", Z = " << theNucleus.GetZ_asInt())
83 << ", N = " << theNucleus.GetN_a 80 << ", N = " << theNucleus.GetN_asInt())
84 << ", A = " << theNucleus.GetA_a 81 << ", A = " << theNucleus.GetA_asInt() << G4endl;
85 #endif 82 #endif
86 83
87 std::pair<G4double,G4double> ratios; 84 std::pair<G4double,G4double> ratios;
88 ratios=theQuasiElastic->GetRatios(thePrimary 85 ratios=theQuasiElastic->GetRatios(thePrimary.GetTotalMomentum(),
89 thePrimary 86 thePrimary.GetDefinition()->GetPDGEncoding(),
90 theNucleus 87 theNucleus.GetZ_asInt(),
91 theNucleus 88 theNucleus.GetN_asInt());
92 #ifdef debug_scatter 89 #ifdef debug_scatter
93 G4cout << "G4QuasiElasticChannel::ratios 90 G4cout << "G4QuasiElasticChannel::ratios " << ratios.first << " x " <<ratios.second
94 << " = " << ratios.first*ratios. 91 << " = " << ratios.first*ratios.second << G4endl;
95 #endif 92 #endif
96 93
97 return ratios.first*ratios.second; 94 return ratios.first*ratios.second;
98 } 95 }
99 96
100 G4KineticTrackVector * G4QuasiElasticChannel:: 97 G4KineticTrackVector * G4QuasiElasticChannel::Scatter(G4Nucleus &theNucleus,
101 98 const G4DynamicParticle & thePrimary)
102 { 99 {
103 G4int A=theNucleus.GetA_asInt(); 100 G4int A=theNucleus.GetA_asInt();
104 G4int Z=theNucleus.GetZ_asInt(); 101 G4int Z=theNucleus.GetZ_asInt();
105 // build Nucleus and choose random nucleon 102 // build Nucleus and choose random nucleon to scatter with
106 the3DNucleus->Init(theNucleus.GetA_asInt(),t 103 the3DNucleus->Init(theNucleus.GetA_asInt(),theNucleus.GetZ_asInt());
107 const std::vector<G4Nucleon>& nucleons=the3D 104 const std::vector<G4Nucleon>& nucleons=the3DNucleus->GetNucleons();
108 G4double targetNucleusMass=the3DNucleus->Get 105 G4double targetNucleusMass=the3DNucleus->GetMass();
109 G4LorentzVector targetNucleus4Mom(0.,0.,0.,t 106 G4LorentzVector targetNucleus4Mom(0.,0.,0.,targetNucleusMass);
110 G4int index; 107 G4int index;
111 do { 108 do {
112 index=G4lrint((A-1)*G4UniformRand()); 109 index=G4lrint((A-1)*G4UniformRand());
113 } while (index < 0 || index >= static_cast<G 110 } while (index < 0 || index >= static_cast<G4int>(nucleons.size())); /* Loop checking, 07.08.2015, A.Ribon */
114 111
115 const G4ParticleDefinition * pDef= nucleons[ 112 const G4ParticleDefinition * pDef= nucleons[index].GetDefinition();
116 113
117 G4int resA=A - 1; 114 G4int resA=A - 1;
118 G4int resZ=Z - static_cast<int>(pDef->GetPDG 115 G4int resZ=Z - static_cast<int>(pDef->GetPDGCharge());
119 const G4ParticleDefinition* resDef; 116 const G4ParticleDefinition* resDef;
120 G4double residualNucleusMass; 117 G4double residualNucleusMass;
121 if(resZ) 118 if(resZ)
122 { 119 {
123 resDef=G4ParticleTable::GetParticleTable() 120 resDef=G4ParticleTable::GetParticleTable()->GetIonTable()->GetIon(resZ,resA,0);
124 residualNucleusMass=resDef->GetPDGMass(); 121 residualNucleusMass=resDef->GetPDGMass();
125 } 122 }
126 else { 123 else {
127 resDef=G4Neutron::Neutron(); 124 resDef=G4Neutron::Neutron();
128 residualNucleusMass=resA * G4Neutron::Neut 125 residualNucleusMass=resA * G4Neutron::Neutron()->GetPDGMass();
129 } 126 }
130 #ifdef debug_scatter 127 #ifdef debug_scatter
131 G4cout<<"G4QElChan::Scatter: neutron - pr 128 G4cout<<"G4QElChan::Scatter: neutron - proton? A ="<<A<<", Z="<<Z<<", projName="
132 <<pDef->GetParticleName()<<G4endl; 129 <<pDef->GetParticleName()<<G4endl;
133 #endif 130 #endif
134 131
135 G4LorentzVector pNucleon=nucleons[index].Get 132 G4LorentzVector pNucleon=nucleons[index].Get4Momentum();
136 G4double residualNucleusEnergy=std::sqrt(sqr 133 G4double residualNucleusEnergy=std::sqrt(sqr(residualNucleusMass) +
137 pNu 134 pNucleon.vect().mag2());
138 pNucleon.setE(targetNucleusMass-residualNucl 135 pNucleon.setE(targetNucleusMass-residualNucleusEnergy);
139 G4LorentzVector residualNucleus4Mom=targetNu 136 G4LorentzVector residualNucleus4Mom=targetNucleus4Mom-pNucleon;
140 137
141 std::pair<G4LorentzVector,G4LorentzVector> r 138 std::pair<G4LorentzVector,G4LorentzVector> result;
142 139
143 result=theQuasiElastic->Scatter(pDef->GetPDG 140 result=theQuasiElastic->Scatter(pDef->GetPDGEncoding(),pNucleon,
144 thePrimary.G 141 thePrimary.GetDefinition()->GetPDGEncoding(),
145 thePrimary.G 142 thePrimary.Get4Momentum());
146 G4LorentzVector scatteredHadron4Mom; 143 G4LorentzVector scatteredHadron4Mom;
147 if (result.first.e() > 0.) 144 if (result.first.e() > 0.)
148 scatteredHadron4Mom=result.second; 145 scatteredHadron4Mom=result.second;
149 else { //scatter failed 146 else { //scatter failed
150 //G4cout << "Warning - G4QuasiElasticChann 147 //G4cout << "Warning - G4QuasiElasticChannel::Scatter no scattering" << G4endl;
151 //return 0; //no scatter 148 //return 0; //no scatter
152 scatteredHadron4Mom=thePrimary.Get4Momentu 149 scatteredHadron4Mom=thePrimary.Get4Momentum();
153 residualNucleus4Mom=G4LorentzVector(0.,0., 150 residualNucleus4Mom=G4LorentzVector(0.,0.,0.,targetNucleusMass);
154 resDef=G4ParticleTable::GetParticleTable() 151 resDef=G4ParticleTable::GetParticleTable()->GetIonTable()->GetIon(Z,A,0);
155 } 152 }
156 153
157 #ifdef debug_scatter 154 #ifdef debug_scatter
158 G4LorentzVector EpConservation=pNucleon+theP 155 G4LorentzVector EpConservation=pNucleon+thePrimary.Get4Momentum()
159 - result.firs 156 - result.first - result.second;
160 if ( (EpConservation.vect().mag2() > .01*M 157 if ( (EpConservation.vect().mag2() > .01*MeV*MeV )
161 || (std::abs(EpConservation.e()) > 0.1 * 158 || (std::abs(EpConservation.e()) > 0.1 * MeV ) )
162 { 159 {
163 G4cout << "Warning - G4QuasiElasticChannel 160 G4cout << "Warning - G4QuasiElasticChannel::Scatter E-p non conservation : "
164 << EpConservation << G4endl; 161 << EpConservation << G4endl;
165 } 162 }
166 #endif 163 #endif
167 164
168 G4KineticTrackVector * ktv = new G4KineticTr 165 G4KineticTrackVector * ktv = new G4KineticTrackVector();
169 G4KineticTrack * sPrim=new G4KineticTrack(th 166 G4KineticTrack * sPrim=new G4KineticTrack(thePrimary.GetDefinition(),
170 0. 167 0.,G4ThreeVector(0), scatteredHadron4Mom);
171 sPrim->SetCreatorModelID( secID ); <<
172 ktv->push_back(sPrim); 168 ktv->push_back(sPrim);
173 if (result.first.e() > 0.) 169 if (result.first.e() > 0.)
174 { 170 {
175 G4KineticTrack * sNuc=new G4KineticTrack(p 171 G4KineticTrack * sNuc=new G4KineticTrack(pDef, 0.,G4ThreeVector(0), result.first);
176 sNuc->SetCreatorModelID( secID ); <<
177 ktv->push_back(sNuc); 172 ktv->push_back(sNuc);
178 } 173 }
179 if(resZ || resA==1) // For the only neutron 174 if(resZ || resA==1) // For the only neutron or for tnuclei with Z>0
180 { 175 {
181 G4KineticTrack * rNuc=new G4KineticTrack(r 176 G4KineticTrack * rNuc=new G4KineticTrack(resDef,
182 0.,G4ThreeVector(0) 177 0.,G4ThreeVector(0), residualNucleus4Mom);
183 rNuc->SetCreatorModelID( secID ); <<
184 ktv->push_back(rNuc); 178 ktv->push_back(rNuc);
185 } 179 }
186 else // The residual nucleus consists of onl 180 else // The residual nucleus consists of only neutrons
187 { 181 {
188 residualNucleus4Mom/=resA; // Split 4- 182 residualNucleus4Mom/=resA; // Split 4-mom of A*n system equally
189 for(G4int in=0; in<resA; in++) // Loop ove 183 for(G4int in=0; in<resA; in++) // Loop over neutrons in A*n system.
190 { 184 {
191 G4KineticTrack* rNuc=new G4KineticTrack( 185 G4KineticTrack* rNuc=new G4KineticTrack(resDef,
192 0.,G4ThreeVector(0) 186 0.,G4ThreeVector(0), residualNucleus4Mom);
193 rNuc->SetCreatorModelID( secID ); <<
194 ktv->push_back(rNuc); 187 ktv->push_back(rNuc);
195 } 188 }
196 } 189 }
197 #ifdef debug_scatter 190 #ifdef debug_scatter
198 G4cout<<"G4QElC::Scat: Nucleon: "<<result.fi 191 G4cout<<"G4QElC::Scat: Nucleon: "<<result.first <<" mass "<<result.first.mag() << G4endl;
199 G4cout<<"G4QElC::Scat: Project: "<<result.se 192 G4cout<<"G4QElC::Scat: Project: "<<result.second<<" mass "<<result.second.mag()<< G4endl;
200 #endif 193 #endif
201 return ktv; 194 return ktv;
202 } 195 }
203 196