| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer << 3 // * DISCLAIMER *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers *
6 // * the Geant4 Collaboration. It is provided << 6 // * of contributors to this software. The specific disclaimers,which *
7 // * conditions of the Geant4 Software License << 7 // * govern, are listed with their locations in: *
8 // * LICENSE and available at http://cern.ch/ << 8 // * http://cern.ch/geant4/license *
9 // * include a list of copyright holders. <<
10 // * 9 // * *
11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 12 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 13 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file << 14 // * use. *
16 // * for the full disclaimer and the limitatio <<
17 // * 15 // * *
18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the *
19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. *
20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work *
21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this *
22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. *
23 // * acceptance of all terms of the Geant4 Sof <<
24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // 23 //
27 // ------------------------------------------- 24 // -------------------------------------------------------------------
28 // GEANT4 Class file 25 // GEANT4 Class file
29 // 26 //
30 // For information related to this code c 27 // For information related to this code contact:
31 // 28 //
32 // File name: G4XnpTotalLowE 29 // File name: G4XnpTotalLowE
33 // 30 //
34 // Author: 31 // Author:
35 // 32 //
36 // Creation date: 15 April 1999 33 // Creation date: 15 April 1999
37 // 34 //
38 // Modifications: 35 // Modifications:
39 // 36 //
40 // Neutron-Proton total cross section 37 // Neutron-Proton total cross section
41 // Linear interpolation from data table 38 // Linear interpolation from data table
42 // 39 //
43 // ------------------------------------------- 40 // -------------------------------------------------------------------
44 41
45 #include "globals.hh" 42 #include "globals.hh"
46 #include "G4ios.hh" 43 #include "G4ios.hh"
47 #include "G4Exp.hh" <<
48 #include "G4Log.hh" <<
49 #include "G4SystemOfUnits.hh" <<
50 #include "G4XnpTotalLowE.hh" 44 #include "G4XnpTotalLowE.hh"
51 #include "G4KineticTrack.hh" 45 #include "G4KineticTrack.hh"
52 #include "G4ParticleDefinition.hh" 46 #include "G4ParticleDefinition.hh"
53 #include "G4PhysicsVector.hh" 47 #include "G4PhysicsVector.hh"
54 #include "G4PhysicsLogVector.hh" << 48 #include "G4PhysicsLnVector.hh"
>> 49 #include "G4ParticleDefinition.hh"
55 #include "G4Proton.hh" 50 #include "G4Proton.hh"
56 #include "G4Neutron.hh" 51 #include "G4Neutron.hh"
57 52
58 const G4double G4XnpTotalLowE::_lowLimit = 0.; 53 const G4double G4XnpTotalLowE::_lowLimit = 0.;
59 const G4double G4XnpTotalLowE::_highLimit = 3. 54 const G4double G4XnpTotalLowE::_highLimit = 3.*GeV;
60 55
61 // Low energy limit of the cross-section table 56 // Low energy limit of the cross-section table (in GeV)
62 // Units are assigned when filling the Physics << 57 // Units are assigned while filling the PhysicsVector
63 const G4double G4XnpTotalLowE::_eMinTable = 1. 58 const G4double G4XnpTotalLowE::_eMinTable = 1.8964808;
64 const G4double G4XnpTotalLowE::_eStepLog = 0.0 59 const G4double G4XnpTotalLowE::_eStepLog = 0.01;
65 60
66 // Cross-sections in mb 61 // Cross-sections in mb
67 // Units are assigned when filling the Physics << 62 // Units are assigned while filling the PhysicsVector
68 const G4int G4XnpTotalLowE::_tableSize = 101; 63 const G4int G4XnpTotalLowE::_tableSize = 101;
69 const G4double G4XnpTotalLowE::_sigmaTable[101 64 const G4double G4XnpTotalLowE::_sigmaTable[101] =
70 { 65 {
71 1500.0, 66 1500.0,
72 248.20, 93.38, 55.26, 44.50, 41.33, 38.48, 3 67 248.20, 93.38, 55.26, 44.50, 41.33, 38.48, 37.20, 35.98,
73 35.02, 34.47, 34.37, 34.67, 35.23, 35.97, 36 68 35.02, 34.47, 34.37, 34.67, 35.23, 35.97, 36.75, 37.37,
74 37.77, 38.03, 38.40, 38.83, 39.26, 39.67, 40 69 37.77, 38.03, 38.40, 38.83, 39.26, 39.67, 40.06, 40.45,
75 40.79, 41.06, 41.31, 41.52, 41.70, 41.81, 41 70 40.79, 41.06, 41.31, 41.52, 41.70, 41.81, 41.87, 41.98,
76 42.12, 42.29, 42.55, 42.82, 43.01, 43.12, 43 71 42.12, 42.29, 42.55, 42.82, 43.01, 43.12, 43.16, 43.14,
77 43.06, 42.95, 42.81, 42.67, 42.54, 42.45, 42 72 43.06, 42.95, 42.81, 42.67, 42.54, 42.45, 42.38, 42.33,
78 42.30, 42.29, 42.28, 42.26, 42.24, 42.21, 42 73 42.30, 42.29, 42.28, 42.26, 42.24, 42.21, 42.17, 42.14,
79 42.10, 42.07, 42.06, 42.05, 42.04, 42.03, 42 74 42.10, 42.07, 42.06, 42.05, 42.04, 42.03, 42.02, 42.00,
80 41.97, 41.94, 41.89, 41.84, 41.79, 41.73, 41 75 41.97, 41.94, 41.89, 41.84, 41.79, 41.73, 41.67, 41.61,
81 41.55, 41.49, 41.44, 41.38, 41.34, 41.31, 41 76 41.55, 41.49, 41.44, 41.38, 41.34, 41.31, 41.29, 41.28,
82 41.27, 41.28, 41.30, 41.33, 41.36, 41.40, 41 77 41.27, 41.28, 41.30, 41.33, 41.36, 41.40, 41.44, 41.49,
83 41.50, 41.51, 41.51, 41.51, 41.52, 41.51, 41 78 41.50, 41.51, 41.51, 41.51, 41.52, 41.51, 41.51, 41.50,
84 41.50, 41.49, 41.47, 41.46 79 41.50, 41.49, 41.47, 41.46
85 }; 80 };
86 81
87 82
88 G4XnpTotalLowE::G4XnpTotalLowE() 83 G4XnpTotalLowE::G4XnpTotalLowE()
89 { 84 {
90 // Cross-sections are available in the range 85 // Cross-sections are available in the range (_eMin,_eMax)
91 86
92 _eMin = _eMinTable * GeV; 87 _eMin = _eMinTable * GeV;
93 _eMin = G4Exp(G4Log(_eMinTable)-_eStepLog)*G << 88 _eMin = std::exp(std::log(_eMinTable)-_eStepLog)*GeV;
94 _eMax = G4Exp(G4Log(_eMinTable) + _tableSize << 89 _eMax = std::exp(std::log(_eMinTable) + _tableSize * _eStepLog) * GeV;
95 90
96 // Protections: validity limits must be comp 91 // Protections: validity limits must be compatible with available data
97 // @@GF this ought to be _lowLimit < _eMin << 92
98 if (_eMin < _lowLimit) 93 if (_eMin < _lowLimit)
99 throw G4HadronicException(__FILE__, __LINE 94 throw G4HadronicException(__FILE__, __LINE__, "G4XnpTotalLowE::G4XnpTotalLowE - Low energy limit not valid");
100 95
101 if (_highLimit > _eMax) 96 if (_highLimit > _eMax)
102 throw G4HadronicException(__FILE__, __LINE 97 throw G4HadronicException(__FILE__, __LINE__, "G4XnpTotalLowE::G4XnpTotalLowE - High energy limit not valid");
103 98
104 _sigma = new G4PhysicsLogVector(_eMin,_eMax, << 99 _sigma = new G4PhysicsLnVector(_eMin,_eMax,_tableSize);
105 G4int i; 100 G4int i;
106 for (i=0; i<_tableSize; i++) 101 for (i=0; i<_tableSize; i++)
107 { 102 {
108 G4double value = _sigmaTable[i] * millib 103 G4double value = _sigmaTable[i] * millibarn;
109 _sigma->PutValue(i,value); 104 _sigma->PutValue(i,value);
110 } 105 }
111 } 106 }
112 107
113 108
114 G4XnpTotalLowE::~G4XnpTotalLowE() 109 G4XnpTotalLowE::~G4XnpTotalLowE()
115 { 110 {
116 if (_sigma) delete _sigma; << 111 delete _sigma;
117 _sigma=0; <<
118 } 112 }
119 113
120 114
121 G4bool G4XnpTotalLowE::operator==(const G4XnpT 115 G4bool G4XnpTotalLowE::operator==(const G4XnpTotalLowE &right) const
122 { 116 {
123 return (this == (G4XnpTotalLowE *) &right); 117 return (this == (G4XnpTotalLowE *) &right);
124 } 118 }
125 119
126 120
127 G4bool G4XnpTotalLowE::operator!=(const G4XnpT 121 G4bool G4XnpTotalLowE::operator!=(const G4XnpTotalLowE &right) const
128 { 122 {
129 return (this != (G4XnpTotalLowE *) &right); 123 return (this != (G4XnpTotalLowE *) &right);
130 } 124 }
131 125
132 126
133 G4double G4XnpTotalLowE::CrossSection(const G4 127 G4double G4XnpTotalLowE::CrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const
134 { 128 {
135 G4double sigma = 0.; 129 G4double sigma = 0.;
136 G4double sqrtS = (trk1.Get4Momentum() + trk2 130 G4double sqrtS = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
137 G4bool dummy = false; 131 G4bool dummy = false;
138 132
139 const G4ParticleDefinition* proton = G4Proto << 133 G4ParticleDefinition* proton = G4Proton::ProtonDefinition();
140 const G4ParticleDefinition* neutron = G4Neut << 134 G4ParticleDefinition* neutron = G4Neutron::NeutronDefinition();
141 135
142 const G4ParticleDefinition* def1 = trk1.GetD << 136 G4ParticleDefinition* def1 = trk1.GetDefinition();
143 const G4ParticleDefinition* def2 = trk2.GetD << 137 G4ParticleDefinition* def2 = trk2.GetDefinition();
144 if ( (def1 == proton && def2 == neutron) || 138 if ( (def1 == proton && def2 == neutron) ||
145 (def1 == neutron && def2 == proton) ) 139 (def1 == neutron && def2 == proton) )
146 { 140 {
147 if (sqrtS >= _eMin && sqrtS <= _eMax) 141 if (sqrtS >= _eMin && sqrtS <= _eMax)
148 { 142 {
149 sigma = _sigma->GetValue(sqrtS,dummy); 143 sigma = _sigma->GetValue(sqrtS,dummy);
150 } else if ( sqrtS < _eMin ) 144 } else if ( sqrtS < _eMin )
151 { 145 {
152 sigma = _sigma->GetValue(_eMin,dummy 146 sigma = _sigma->GetValue(_eMin,dummy);
153 } 147 }
154 } 148 }
155 149
156 return sigma; 150 return sigma;
157 } 151 }
158 152
159 void G4XnpTotalLowE::Print() const 153 void G4XnpTotalLowE::Print() const
160 { 154 {
161 // Dump the cross-section table 155 // Dump the cross-section table
162 156
163 G4cout << Name() << "Cross-section table: " 157 G4cout << Name() << "Cross-section table: " << G4endl;
164 G4bool dummy = false; 158 G4bool dummy = false;
165 G4int i; 159 G4int i;
166 160
167 for (i=0; i<_tableSize; i++) 161 for (i=0; i<_tableSize; i++)
168 { 162 {
169 G4double e = _sigma->GetLowEdgeEnergy(i) 163 G4double e = _sigma->GetLowEdgeEnergy(i) / GeV;
170 G4double sigma = _sigma->GetValue(e,dumm 164 G4double sigma = _sigma->GetValue(e,dummy) / millibarn;
171 G4cout << i << ") e = " << e << " GeV -- 165 G4cout << i << ") e = " << e << " GeV ---- Cross section = " << sigma << " mb " << G4endl;
172 } 166 }
173 167
174 G4VCrossSectionSource::Print(); 168 G4VCrossSectionSource::Print();
175 } 169 }
176 170
177 171
178 G4String G4XnpTotalLowE::Name() const 172 G4String G4XnpTotalLowE::Name() const
179 { 173 {
180 G4String name("NNTotalLowE"); 174 G4String name("NNTotalLowE");
181 return name; 175 return name;
182 } 176 }
183 177
184 178
185 G4bool G4XnpTotalLowE::IsValid(G4double e) con 179 G4bool G4XnpTotalLowE::IsValid(G4double e) const
186 { 180 {
187 G4bool answer = InLimits(e,_lowLimit,_highLi 181 G4bool answer = InLimits(e,_lowLimit,_highLimit);
188 182
189 return answer; 183 return answer;
190 } 184 }
191 185
192 186
193 187