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28 // 28 //
29 // Geant4 Hadron Charge Exchange Process -- so 29 // Geant4 Hadron Charge Exchange Process -- source file
30 // 30 //
31 // Created 21 April 2006 V.Ivanchenko 31 // Created 21 April 2006 V.Ivanchenko
32 // 32 //
33 // Modified: 33 // Modified:
34 // 24-Apr-06 V.Ivanchenko add neutron scatteri 34 // 24-Apr-06 V.Ivanchenko add neutron scattering on hydrogen from CHIPS
35 // 07-Jun-06 V.Ivanchenko fix problem of rotat 35 // 07-Jun-06 V.Ivanchenko fix problem of rotation of final state
36 // 25-Jul-06 V.Ivanchenko add 19 MeV low energ 36 // 25-Jul-06 V.Ivanchenko add 19 MeV low energy for CHIPS
37 // 23-Jan-07 V.Ivanchenko add cross section in 37 // 23-Jan-07 V.Ivanchenko add cross section interfaces with Z and A
38 // and do not use CHIPS 38 // and do not use CHIPS for cross sections
39 // 14-Sep-12 M.Kelsey -- Pass subType code to 39 // 14-Sep-12 M.Kelsey -- Pass subType code to base ctor
40 // 06-Aug-15 A.Ribon migrating to G4Pow 40 // 06-Aug-15 A.Ribon migrating to G4Pow
41 41
42 #include "G4ChargeExchangeProcess.hh" 42 #include "G4ChargeExchangeProcess.hh"
43 #include "globals.hh" 43 #include "globals.hh"
44 #include "G4SystemOfUnits.hh" 44 #include "G4SystemOfUnits.hh"
45 #include "G4CrossSectionDataStore.hh" 45 #include "G4CrossSectionDataStore.hh"
46 #include "G4CrossSectionElastic.hh" << 46 #include "G4HadronElasticDataSet.hh"
47 #include "G4ComponentGGHadronNucleusXsc.hh" <<
48 #include "G4Element.hh" 47 #include "G4Element.hh"
49 #include "G4ElementVector.hh" 48 #include "G4ElementVector.hh"
50 #include "G4IsotopeVector.hh" 49 #include "G4IsotopeVector.hh"
51 #include "G4Neutron.hh" 50 #include "G4Neutron.hh"
52 #include "G4Proton.hh" 51 #include "G4Proton.hh"
53 #include "G4PhysicsLinearVector.hh" 52 #include "G4PhysicsLinearVector.hh"
54 53
55 #include "G4Pow.hh" 54 #include "G4Pow.hh"
56 55
57 56
58 G4ChargeExchangeProcess::G4ChargeExchangeProce 57 G4ChargeExchangeProcess::G4ChargeExchangeProcess(const G4String& procName)
59 : G4HadronicProcess(procName,fChargeExchange 58 : G4HadronicProcess(procName,fChargeExchange), first(true)
60 { 59 {
61 G4cout << "###=== The class G4ChargeExchange <<
62 G4cout << "###=== It will be removed at the <<
63 thEnergy = 20.*MeV; 60 thEnergy = 20.*MeV;
64 pPDG = 0; 61 pPDG = 0;
65 verboseLevel= 1; 62 verboseLevel= 1;
66 AddDataSet( new G4CrossSectionElastic( new G << 63 AddDataSet(new G4HadronElasticDataSet);
67 theProton = G4Proton::Proton(); 64 theProton = G4Proton::Proton();
68 theNeutron = G4Neutron::Neutron(); 65 theNeutron = G4Neutron::Neutron();
69 theAProton = G4AntiProton::AntiProton(); 66 theAProton = G4AntiProton::AntiProton();
70 theANeutron = G4AntiNeutron::AntiNeutron(); 67 theANeutron = G4AntiNeutron::AntiNeutron();
71 thePiPlus = G4PionPlus::PionPlus(); 68 thePiPlus = G4PionPlus::PionPlus();
72 thePiMinus = G4PionMinus::PionMinus(); 69 thePiMinus = G4PionMinus::PionMinus();
73 thePiZero = G4PionZero::PionZero(); 70 thePiZero = G4PionZero::PionZero();
74 theKPlus = G4KaonPlus::KaonPlus(); 71 theKPlus = G4KaonPlus::KaonPlus();
75 theKMinus = G4KaonMinus::KaonMinus(); 72 theKMinus = G4KaonMinus::KaonMinus();
76 theK0S = G4KaonZeroShort::KaonZeroShort 73 theK0S = G4KaonZeroShort::KaonZeroShort();
77 theK0L = G4KaonZeroLong::KaonZeroLong() 74 theK0L = G4KaonZeroLong::KaonZeroLong();
78 theL = G4Lambda::Lambda(); 75 theL = G4Lambda::Lambda();
79 theAntiL = G4AntiLambda::AntiLambda(); 76 theAntiL = G4AntiLambda::AntiLambda();
80 theSPlus = G4SigmaPlus::SigmaPlus(); 77 theSPlus = G4SigmaPlus::SigmaPlus();
81 theASPlus = G4AntiSigmaPlus::AntiSigmaPlus 78 theASPlus = G4AntiSigmaPlus::AntiSigmaPlus();
82 theSMinus = G4SigmaMinus::SigmaMinus(); 79 theSMinus = G4SigmaMinus::SigmaMinus();
83 theASMinus = G4AntiSigmaMinus::AntiSigmaMin 80 theASMinus = G4AntiSigmaMinus::AntiSigmaMinus();
84 theS0 = G4SigmaZero::SigmaZero(); 81 theS0 = G4SigmaZero::SigmaZero();
85 theAS0 = G4AntiSigmaZero::AntiSigmaZero 82 theAS0 = G4AntiSigmaZero::AntiSigmaZero();
86 theXiMinus = G4XiMinus::XiMinus(); 83 theXiMinus = G4XiMinus::XiMinus();
87 theXi0 = G4XiZero::XiZero(); 84 theXi0 = G4XiZero::XiZero();
88 theAXiMinus = G4AntiXiMinus::AntiXiMinus(); 85 theAXiMinus = G4AntiXiMinus::AntiXiMinus();
89 theAXi0 = G4AntiXiZero::AntiXiZero(); 86 theAXi0 = G4AntiXiZero::AntiXiZero();
90 theOmega = G4OmegaMinus::OmegaMinus(); 87 theOmega = G4OmegaMinus::OmegaMinus();
91 theAOmega = G4AntiOmegaMinus::AntiOmegaMin 88 theAOmega = G4AntiOmegaMinus::AntiOmegaMinus();
92 theD = G4Deuteron::Deuteron(); 89 theD = G4Deuteron::Deuteron();
93 theT = G4Triton::Triton(); 90 theT = G4Triton::Triton();
94 theA = G4Alpha::Alpha(); 91 theA = G4Alpha::Alpha();
95 theHe3 = G4He3::He3(); 92 theHe3 = G4He3::He3();
96 } 93 }
97 94
98 G4ChargeExchangeProcess::~G4ChargeExchangeProc 95 G4ChargeExchangeProcess::~G4ChargeExchangeProcess()
99 { 96 {
100 if (factors) delete factors; 97 if (factors) delete factors;
101 } 98 }
102 99
103 void G4ChargeExchangeProcess:: 100 void G4ChargeExchangeProcess::
104 BuildPhysicsTable(const G4ParticleDefinition& 101 BuildPhysicsTable(const G4ParticleDefinition& aParticleType)
105 { 102 {
106 if(first) { 103 if(first) {
107 first = false; 104 first = false;
108 theParticle = &aParticleType; 105 theParticle = &aParticleType;
109 pPDG = theParticle->GetPDGEncoding(); 106 pPDG = theParticle->GetPDGEncoding();
110 107
111 store = G4HadronicProcess::GetCrossSection 108 store = G4HadronicProcess::GetCrossSectionDataStore();
112 109
113 const size_t n = 10; 110 const size_t n = 10;
114 if(theParticle == thePiPlus || theParticle 111 if(theParticle == thePiPlus || theParticle == thePiMinus ||
115 theParticle == theKPlus || theParticle 112 theParticle == theKPlus || theParticle == theKMinus ||
116 theParticle == theK0S || theParticle 113 theParticle == theK0S || theParticle == theK0L) {
117 114
118 G4double F[n] = {0.33,0.27,0.29,0.31,0.2 115 G4double F[n] = {0.33,0.27,0.29,0.31,0.27,0.18,0.13,0.1,0.09,0.07};
119 factors = new G4PhysicsLinearVector(0.0, 116 factors = new G4PhysicsLinearVector(0.0,2.0*GeV,n);
120 for(size_t i=0; i<n; i++) {factors->PutV 117 for(size_t i=0; i<n; i++) {factors->PutValue(i,F[i]);}
121 118
122 } else { 119 } else {
123 120
124 G4double F[n] = {0.50,0.45,0.40,0.35,0.3 121 G4double F[n] = {0.50,0.45,0.40,0.35,0.30,0.25,0.06,0.04,0.005,0.0};
125 factors = new G4PhysicsLinearVector(0.0, 122 factors = new G4PhysicsLinearVector(0.0,4.0*GeV,n);
126 for(size_t i=0; i<n; i++) {factors->PutV 123 for(size_t i=0; i<n; i++) {factors->PutValue(i,F[i]);}
127 } 124 }
>> 125 //factors->SetSpline(true);
128 126
129 if(verboseLevel>1) 127 if(verboseLevel>1)
130 G4cout << "G4ChargeExchangeProcess for " 128 G4cout << "G4ChargeExchangeProcess for "
131 << theParticle->GetParticleName() 129 << theParticle->GetParticleName()
132 << G4endl; 130 << G4endl;
133 } 131 }
134 G4HadronicProcess::BuildPhysicsTable(aPartic 132 G4HadronicProcess::BuildPhysicsTable(aParticleType);
135 } 133 }
136 134
137 G4double G4ChargeExchangeProcess::GetElementCr 135 G4double G4ChargeExchangeProcess::GetElementCrossSection(
138 const G4Dyna 136 const G4DynamicParticle* dp,
139 const G4Element* elm, 137 const G4Element* elm,
140 const G4Material* mat) 138 const G4Material* mat)
141 { 139 {
142 // gives the microscopic cross section in GE 140 // gives the microscopic cross section in GEANT4 internal units
143 G4double Z = elm->GetZ(); 141 G4double Z = elm->GetZ();
144 G4int iz = G4int(Z); 142 G4int iz = G4int(Z);
145 G4double x = 0.0; 143 G4double x = 0.0;
146 144
147 // The process is effective only above the t 145 // The process is effective only above the threshold
148 if(iz == 1 || dp->GetKineticEnergy() < thEne 146 if(iz == 1 || dp->GetKineticEnergy() < thEnergy) return x;
149 147
150 if(verboseLevel>1) 148 if(verboseLevel>1)
151 G4cout << "G4ChargeExchangeProcess compute 149 G4cout << "G4ChargeExchangeProcess compute GHAD CS for element "
152 << elm->GetName() 150 << elm->GetName()
153 << G4endl; 151 << G4endl;
154 x = store->GetCrossSection(dp, elm, mat); 152 x = store->GetCrossSection(dp, elm, mat);
155 153
156 if(verboseLevel>1) 154 if(verboseLevel>1)
157 G4cout << "G4ChargeExchangeProcess cross(m 155 G4cout << "G4ChargeExchangeProcess cross(mb)= " << x/millibarn
158 << " E(MeV)= " << dp->GetKineticEn 156 << " E(MeV)= " << dp->GetKineticEnergy()
159 << " " << theParticle->GetParticleName() 157 << " " << theParticle->GetParticleName()
160 << " in Z= " << iz 158 << " in Z= " << iz
161 << G4endl; 159 << G4endl;
162 G4bool b; 160 G4bool b;
163 G4double A = elm->GetN(); 161 G4double A = elm->GetN();
164 G4double ptot = dp->GetTotalMomentum(); 162 G4double ptot = dp->GetTotalMomentum();
165 x *= factors->GetValue(ptot, b)/G4Pow::GetIn 163 x *= factors->GetValue(ptot, b)/G4Pow::GetInstance()->powA(A, 0.42);
166 if(theParticle == thePiPlus || theParticle = 164 if(theParticle == thePiPlus || theParticle == theProton ||
167 theParticle == theKPlus || theParticle = 165 theParticle == theKPlus || theParticle == theANeutron)
168 { x *= (1.0 - Z/A); } 166 { x *= (1.0 - Z/A); }
169 167
170 else if(theParticle == thePiMinus || thePart 168 else if(theParticle == thePiMinus || theParticle == theNeutron ||
171 theParticle == theKMinus || thePart 169 theParticle == theKMinus || theParticle == theAProton)
172 { x *= Z/A; } 170 { x *= Z/A; }
173 171
174 if(theParticle->GetPDGMass() < GeV) { 172 if(theParticle->GetPDGMass() < GeV) {
175 if(ptot > 2.*GeV) x *= 4.0*GeV*GeV/(ptot*p 173 if(ptot > 2.*GeV) x *= 4.0*GeV*GeV/(ptot*ptot);
176 } 174 }
177 175
178 if(verboseLevel>1) 176 if(verboseLevel>1)
179 G4cout << "Corrected cross(mb)= " << x/mil 177 G4cout << "Corrected cross(mb)= " << x/millibarn << G4endl;
180 178
181 return x; 179 return x;
182 } 180 }
183 181
184 G4bool G4ChargeExchangeProcess:: 182 G4bool G4ChargeExchangeProcess::
185 IsApplicable(const G4ParticleDefinition& aPart 183 IsApplicable(const G4ParticleDefinition& aParticleType)
186 { 184 {
187 const G4ParticleDefinition* p = &aParticleTy 185 const G4ParticleDefinition* p = &aParticleType;
188 return (p == thePiPlus || p == thePiMinus || 186 return (p == thePiPlus || p == thePiMinus ||
189 p == theProton || p == theNeutron || 187 p == theProton || p == theNeutron ||
190 p == theAProton|| p == theANeutron|| 188 p == theAProton|| p == theANeutron||
191 p == theKPlus || p == theKMinus || 189 p == theKPlus || p == theKMinus ||
192 p == theK0S || p == theK0L || 190 p == theK0S || p == theK0L ||
193 p == theL); 191 p == theL);
194 } 192 }
195 193
196 void G4ChargeExchangeProcess:: 194 void G4ChargeExchangeProcess::
197 DumpPhysicsTable(const G4ParticleDefinition& a 195 DumpPhysicsTable(const G4ParticleDefinition& aParticleType)
198 { 196 {
199 store->DumpPhysicsTable(aParticleType); 197 store->DumpPhysicsTable(aParticleType);
200 } 198 }
201 199