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26 // 26 //
>> 27 // $Id: G4QuasiElasticChannel.cc,v 1.4 2008/04/24 13:26:19 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-09-02-patch-01 $
27 // 29 //
28 30
29 // Author : Gunter Folger March 2007 31 // Author : Gunter Folger March 2007
30 // Modified by Mikhail Kossov. Apr2009, E/M co <<
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 // 20110808 M. Kelsey -- Move #includes from <<
39 38
40 #include "G4QuasiElasticChannel.hh" 39 #include "G4QuasiElasticChannel.hh"
41 40
42 #include "G4Fancy3DNucleus.hh" 41 #include "G4Fancy3DNucleus.hh"
43 #include "G4DynamicParticle.hh" <<
44 #include "G4HadTmpUtil.hh" /* lrint */ <<
45 #include "G4KineticTrack.hh" <<
46 #include "G4KineticTrackVector.hh" <<
47 #include "G4LorentzVector.hh" <<
48 #include "G4Neutron.hh" <<
49 #include "G4Nucleon.hh" <<
50 #include "G4Nucleus.hh" <<
51 #include "G4ParticleDefinition.hh" <<
52 #include "G4ParticleTable.hh" <<
53 #include "G4IonTable.hh" <<
54 #include "G4QuasiElRatios.hh" <<
55 #include "globals.hh" <<
56 #include <vector> <<
57 #include "G4PhysicsModelCatalog.hh" <<
58 42
59 //#define debug_scatter <<
60 43
>> 44 #include "G4HadTmpUtil.hh" //lrint
>> 45
>> 46 //#define debug_scatter
61 47
62 G4QuasiElasticChannel::G4QuasiElasticChannel() 48 G4QuasiElasticChannel::G4QuasiElasticChannel()
63 : G4HadronicInteraction("QuasiElastic"), << 49 {
64 theQuasiElastic(new G4QuasiElRatios), << 50 theQuasiElastic=G4QuasiFreeRatios::GetPointer();
65 the3DNucleus(new G4Fancy3DNucleus), <<
66 secID(-1) { <<
67 secID = G4PhysicsModelCatalog::GetModelID( " <<
68 } 51 }
69 52
70 G4QuasiElasticChannel::~G4QuasiElasticChannel( 53 G4QuasiElasticChannel::~G4QuasiElasticChannel()
71 { << 54 {}
72 delete the3DNucleus; <<
73 delete theQuasiElastic; <<
74 } <<
75 55
76 G4double G4QuasiElasticChannel::GetFraction(G4 56 G4double G4QuasiElasticChannel::GetFraction(G4Nucleus &theNucleus,
77 const G4DynamicParticle & thePrimary) << 57 const G4DynamicParticle & thePrimary)
78 { 58 {
79 #ifdef debug_scatter << 59 std::pair<G4double,G4double> ratios;
80 G4cout << "G4QuasiElasticChannel:: P=" < << 60 ratios=theQuasiElastic->GetRatios(thePrimary.GetTotalMomentum(),
81 << ", pPDG=" << thePrimary.GetDef << 61 thePrimary.GetDefinition()->GetPDGEncoding(),
82 << ", Z = " << theNucleus.GetZ_a << 62 G4lrint(theNucleus.GetZ()),
83 << ", N = " << theNucleus.GetN_a << 63 G4lrint(theNucleus.GetN()-theNucleus.GetZ()));
84 << ", A = " << theNucleus.GetA_a << 64 #ifdef debug_getFraction
85 #endif << 65 G4cout << "G4QuasiElasticChannel::ratios " << ratios.first << " x " <<ratios.second
86 << 66 << " = " << ratios.first*ratios.second << G4endl;
87 std::pair<G4double,G4double> ratios; << 67 #endif
88 ratios=theQuasiElastic->GetRatios(thePrimary << 68
89 thePrimary << 69 return ratios.first*ratios.second;
90 theNucleus <<
91 theNucleus <<
92 #ifdef debug_scatter <<
93 G4cout << "G4QuasiElasticChannel::ratios <<
94 << " = " << ratios.first*ratios. <<
95 #endif <<
96 <<
97 return ratios.first*ratios.second; <<
98 } 70 }
99 71
100 G4KineticTrackVector * G4QuasiElasticChannel:: 72 G4KineticTrackVector * G4QuasiElasticChannel::Scatter(G4Nucleus &theNucleus,
101 << 73 const G4DynamicParticle & thePrimary)
102 { 74 {
103 G4int A=theNucleus.GetA_asInt(); << 75
104 G4int Z=theNucleus.GetZ_asInt(); << 76
105 // build Nucleus and choose random nucleon << 77 G4int A=G4lrint(theNucleus.GetN());
106 the3DNucleus->Init(theNucleus.GetA_asInt(),t << 78 // G4int Z=G4lrint(theNucleus.GetZ());
107 const std::vector<G4Nucleon>& nucleons=the3D << 79 // build Nucleus and choose random nucleon to scatter with
108 G4double targetNucleusMass=the3DNucleus->Get << 80 the3DNucleus.Init(theNucleus.GetN(),theNucleus.GetZ());
109 G4LorentzVector targetNucleus4Mom(0.,0.,0.,t << 81 const std::vector<G4Nucleon *> nucleons=the3DNucleus.GetNucleons();
110 G4int index; << 82
111 do { << 83 G4int index;
112 index=G4lrint((A-1)*G4UniformRand()); << 84 do {
113 } while (index < 0 || index >= static_cast<G << 85 index=G4lrint((A-1)*G4UniformRand());
114 << 86
115 const G4ParticleDefinition * pDef= nucleons[ << 87 } while (index < 0 || index >= static_cast<G4int>(nucleons.size()));
116 << 88
117 G4int resA=A - 1; << 89 // G4double an=G4UniformRand()*A;
118 G4int resZ=Z - static_cast<int>(pDef->GetPDG << 90 G4ParticleDefinition * pDef= nucleons[index]->GetDefinition();
119 const G4ParticleDefinition* resDef; << 91
120 G4double residualNucleusMass; << 92 #ifdef debug_scatter
121 if(resZ) << 93 G4cout << " neutron - proton? A, Z, an, pdg" <<" "
122 { << 94 << A <<" "<<G4lrint(theNucleus.GetZ())
123 resDef=G4ParticleTable::GetParticleTable() << 95 << " "<<an <<" " << pDef->GetParticleName()<< G4endl;
124 residualNucleusMass=resDef->GetPDGMass(); << 96 #endif
125 } << 97 // G4LorentzVector pNucleon(G4ThreeVector(0,0,0),pDef->GetPDGMass());
126 else { << 98 G4LorentzVector pNucleon=nucleons[index]->Get4Momentum();
127 resDef=G4Neutron::Neutron(); << 99
128 residualNucleusMass=resA * G4Neutron::Neut << 100 std::pair<G4LorentzVector,G4LorentzVector> result;
129 } << 101
130 #ifdef debug_scatter << 102 result=theQuasiElastic->Scatter(pDef->GetPDGEncoding(),pNucleon,
131 G4cout<<"G4QElChan::Scatter: neutron - pr << 103 thePrimary.GetDefinition()->GetPDGEncoding(),
132 <<pDef->GetParticleName()<<G4endl; << 104 thePrimary.Get4Momentum());
133 #endif << 105
134 << 106 if (result.first.e() == 0.)
135 G4LorentzVector pNucleon=nucleons[index].Get << 107 {
136 G4double residualNucleusEnergy=std::sqrt(sqr << 108 G4cout << "Warning - G4QuasiElasticChannel::Scatter no scattering" << G4endl;
137 pNu << 109 return 0; //no scatter
138 pNucleon.setE(targetNucleusMass-residualNucl << 110 }
139 G4LorentzVector residualNucleus4Mom=targetNu <<
140 <<
141 std::pair<G4LorentzVector,G4LorentzVector> r <<
142 <<
143 result=theQuasiElastic->Scatter(pDef->GetPDG <<
144 thePrimary.G <<
145 thePrimary.G <<
146 G4LorentzVector scatteredHadron4Mom; <<
147 if (result.first.e() > 0.) <<
148 scatteredHadron4Mom=result.second; <<
149 else { //scatter failed <<
150 //G4cout << "Warning - G4QuasiElasticChann <<
151 //return 0; //no scatter <<
152 scatteredHadron4Mom=thePrimary.Get4Momentu <<
153 residualNucleus4Mom=G4LorentzVector(0.,0., <<
154 resDef=G4ParticleTable::GetParticleTable() <<
155 } <<
156 111
157 #ifdef debug_scatter 112 #ifdef debug_scatter
158 G4LorentzVector EpConservation=pNucleon+theP << 113 G4LorentzVector EpConservation=pNucleon+thePrimary.Get4Momentum()
159 - result.firs << 114 - result.first - result.second;
160 if ( (EpConservation.vect().mag2() > .01*M << 115 if ( (EpConservation.vect().mag2() > 0.01*MeV*MeV )
161 || (std::abs(EpConservation.e()) > 0.1 * << 116 || (std::abs(EpConservation.e()) > 0.1 * MeV ) )
162 { << 117 {
163 G4cout << "Warning - G4QuasiElasticChannel << 118 G4cout << "Warning - G4QuasiElasticChannel::Scatter E-p non conservation : "
164 << EpConservation << G4endl; << 119 << EpConservation << G4endl;
165 } << 120 }
166 #endif 121 #endif
167 122
168 G4KineticTrackVector * ktv = new G4KineticTr << 123 G4KineticTrackVector * ktv;
169 G4KineticTrack * sPrim=new G4KineticTrack(th << 124 ktv=new G4KineticTrackVector();
170 0. << 125 G4KineticTrack * sPrim=new G4KineticTrack(thePrimary.GetDefinition(),
171 sPrim->SetCreatorModelID( secID ); << 126 0.,G4ThreeVector(0), result.second);
172 ktv->push_back(sPrim); << 127 ktv->push_back(sPrim);
173 if (result.first.e() > 0.) << 128 G4KineticTrack * sNuc=new G4KineticTrack(pDef,
174 { << 129 0.,G4ThreeVector(0), result.first);
175 G4KineticTrack * sNuc=new G4KineticTrack(p << 130 ktv->push_back(sNuc);
176 sNuc->SetCreatorModelID( secID ); << 131
177 ktv->push_back(sNuc); <<
178 } <<
179 if(resZ || resA==1) // For the only neutron <<
180 { <<
181 G4KineticTrack * rNuc=new G4KineticTrack(r <<
182 0.,G4ThreeVector(0) <<
183 rNuc->SetCreatorModelID( secID ); <<
184 ktv->push_back(rNuc); <<
185 } <<
186 else // The residual nucleus consists of onl <<
187 { <<
188 residualNucleus4Mom/=resA; // Split 4- <<
189 for(G4int in=0; in<resA; in++) // Loop ove <<
190 { <<
191 G4KineticTrack* rNuc=new G4KineticTrack( <<
192 0.,G4ThreeVector(0) <<
193 rNuc->SetCreatorModelID( secID ); <<
194 ktv->push_back(rNuc); <<
195 } <<
196 } <<
197 #ifdef debug_scatter 132 #ifdef debug_scatter
198 G4cout<<"G4QElC::Scat: Nucleon: "<<result.fi << 133 G4cout << " scattered Nucleon : " << result.first << " mass " <<result.first.mag() << G4endl;
199 G4cout<<"G4QElC::Scat: Project: "<<result.se << 134 G4cout << " scattered Project : " << result.second << " mass " <<result.second.mag() << G4endl;
200 #endif 135 #endif
201 return ktv; << 136 return ktv;
202 } 137 }
203 138