1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | #include "globals.hh" |
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27 | #include "G4ios.hh" |
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28 | #include "G4XNNElasticLowE.hh" |
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29 | #include "G4KineticTrack.hh" |
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30 | #include "G4ParticleDefinition.hh" |
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31 | #include "G4PhysicsVector.hh" |
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32 | #include "G4PhysicsLnVector.hh" |
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33 | #include "G4ParticleDefinition.hh" |
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34 | #include "G4Proton.hh" |
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35 | #include "G4Neutron.hh" |
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36 | |
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37 | |
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38 | const G4double G4XNNElasticLowE::_lowLimit = 0.; |
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39 | const G4double G4XNNElasticLowE::_highLimit = 3.*GeV; |
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40 | |
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41 | // Low energy limit of the cross-section table (in GeV) |
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42 | // Units are assigned while filling the PhysicsVector |
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43 | const G4double G4XNNElasticLowE::_eMinTable = 1.8964808; |
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44 | const G4double G4XNNElasticLowE::_eStepLog = 0.01; |
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45 | |
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46 | // Cross-sections in mb |
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47 | // Units are assigned while filling the PhysicsVector |
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48 | |
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49 | const G4int G4XNNElasticLowE::tableSize = 101; |
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50 | |
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51 | const G4double G4XNNElasticLowE::ppTable[101] = |
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52 | { |
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53 | 60.00, //was 0. |
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54 | 33.48, 26.76, 25.26, 24.55, 23.94, 23.77, 23.72, 23.98, |
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55 | 25.48, 27.52, 27.72, 27.21, 25.80, 26.00, 24.32, 23.81, |
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56 | 24.37, 24.36, 23.13, 22.43, 21.71, 21.01, 20.83, 20.74, |
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57 | 20.25, 20.10, 20.59, 20.04, 20.83, 20.84, 21.07, 20.83, |
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58 | 20.79, 21.88, 21.15, 20.92, 19.00, 18.60, 17.30, 17.00, |
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59 | 16.70, 16.50, 16.20, 15.80, 15.57, 15.20, 15.00, 14.60, |
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60 | 14.20, 14.00, 13.80, 13.60, 13.40, 13.20, 13.00, 12.85, |
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61 | 12.70, 12.60, 12.50, 12.40, 12.30, 12.20, 12.10, 12.00, |
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62 | 11.90, 11.80, 11.75, 11.70, 11.64, 11.53, 11.41, 11.31, |
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63 | 11.22, 11.13, 11.05, 10.97, 10.89, 10.82, 10.75, 10.68, |
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64 | 10.61, 10.54, 10.48, 10.41, 10.35, 10.28, 10.22, 10.16, |
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65 | 10.13, 10.10, 10.08, 10.05, 10.02, 9.99, 9.96, 9.93, |
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66 | 9.90, 9.87, 9.84, 9.80 |
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67 | }; |
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68 | |
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69 | const G4double G4XNNElasticLowE::npTable[101] = |
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70 | { |
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71 | 1500.00, // was 0. |
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72 | 248.20, 93.38, 55.26, 44.50, 41.33, 38.48, 37.20, 35.98, |
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73 | 35.02, 34.47, 32.48, 30.76, 29.46, 28.53, 27.84, 27.20, |
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74 | 26.53, 25.95, 25.59, 25.46, 25.00, 24.49, 24.08, 23.86, |
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75 | 23.17, 22.70, 21.88, 21.48, 20.22, 19.75, 18.97, 18.39, |
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76 | 17.98, 17.63, 17.21, 16.72, 16.68, 16.58, 16.42, 16.22, |
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77 | 15.98, 15.71, 15.42, 15.14, 14.87, 14.65, 14.44, 14.26, |
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78 | 14.10, 13.95, 13.80, 13.64, 13.47, 13.29, 13.09, 12.89, |
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79 | 12.68, 12.47, 12.27, 12.06, 11.84, 11.76, 11.69, 11.60, |
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80 | 11.50, 11.41, 11.29, 11.17, 11.06, 10.93, 10.81, 10.68, |
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81 | 10.56, 10.44, 10.33, 10.21, 10.12, 10.03, 9.96, 9.89, |
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82 | 9.83, 9.80, 9.77, 9.75, 9.74, 9.74, 9.74, 9.76, |
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83 | 9.73, 9.70, 9.68, 9.65, 9.63, 9.60, 9.57, 9.55, |
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84 | 9.52, 9.49, 9.46, 9.43 |
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85 | }; |
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86 | |
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87 | |
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88 | G4XNNElasticLowE::G4XNNElasticLowE() |
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89 | { |
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90 | // Cross-sections are available in the range (_eMin,_eMax) |
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91 | |
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92 | _eMin = _eMinTable * GeV; |
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93 | _eMax = std::exp(std::log(_eMinTable) + tableSize * _eStepLog) * GeV; |
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94 | if (_eMin < _lowLimit) |
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95 | throw G4HadronicException(__FILE__, __LINE__, "G4XNNElasticLowE::G4XNNElasticLowE - Low energy limit not valid"); |
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96 | if (_highLimit > _eMax) |
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97 | throw G4HadronicException(__FILE__, __LINE__, "G4XNNElasticLowE::G4XNNElasticLowE - High energy limit not valid"); |
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98 | G4PhysicsVector* pp = new G4PhysicsLnVector(_eMin,_eMax,tableSize); |
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99 | |
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100 | _eMin = std::exp(std::log(_eMinTable)-_eStepLog)*GeV; |
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101 | if (_eMin < _lowLimit) |
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102 | throw G4HadronicException(__FILE__, __LINE__, "G4XNNElasticLowE::G4XNNElasticLowE - Low energy limit not valid"); |
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103 | G4PhysicsVector* np = new G4PhysicsLnVector(_eMin,_eMax,tableSize); |
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104 | |
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105 | G4int i; |
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106 | for (i=0; i<tableSize; i++) |
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107 | { |
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108 | G4double value = ppTable[i] * millibarn; |
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109 | pp->PutValue(i,value); |
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110 | value = npTable[i] * millibarn; |
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111 | np->PutValue(i,value); |
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112 | } |
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113 | xMap[G4Proton::ProtonDefinition()->GetParticleName()] = pp; |
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114 | xMap[G4Neutron::NeutronDefinition()->GetParticleName()] = np; |
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115 | } |
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116 | |
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117 | |
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118 | G4XNNElasticLowE::~G4XNNElasticLowE() |
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119 | { |
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120 | G4String name_proton = "proton"; |
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121 | G4String name_neutron = "neutron"; |
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122 | delete xMap[name_proton]; |
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123 | delete xMap[name_neutron]; |
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124 | } |
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125 | |
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126 | |
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127 | G4bool G4XNNElasticLowE::operator==(const G4XNNElasticLowE &right) const |
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128 | { |
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129 | return (this == (G4XNNElasticLowE *) &right); |
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130 | } |
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131 | |
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132 | |
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133 | G4bool G4XNNElasticLowE::operator!=(const G4XNNElasticLowE &right) const |
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134 | { |
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135 | |
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136 | return (this != (G4XNNElasticLowE *) &right); |
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137 | } |
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138 | |
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139 | |
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140 | G4double G4XNNElasticLowE::CrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const |
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141 | { |
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142 | G4double sigma = 0.; |
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143 | G4double sqrtS = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag(); |
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144 | G4bool dummy = false; |
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145 | |
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146 | G4String key = FindKeyParticle(trk1,trk2); |
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147 | |
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148 | typedef std::map <G4String, G4PhysicsVector*, std::less<G4String> > StringPhysMap; |
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149 | |
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150 | if (xMap.find(key)!= xMap.end()) |
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151 | { |
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152 | |
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153 | StringPhysMap::const_iterator iter; |
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154 | for (iter = xMap.begin(); iter != xMap.end(); ++iter) |
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155 | { |
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156 | G4String str = (*iter).first; |
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157 | if (str == key) |
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158 | { |
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159 | G4PhysicsVector* physVector = (*iter).second; |
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160 | // G4PhysicsVector* physVector = xMap[key]; |
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161 | if (sqrtS >= _eMin && sqrtS <= _eMax) |
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162 | { |
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163 | sigma = physVector->GetValue(sqrtS,dummy); |
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164 | } else if ( sqrtS < _eMin ) |
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165 | { |
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166 | sigma = physVector->GetValue(_eMin,dummy); |
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167 | } |
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168 | } |
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169 | } |
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170 | } |
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171 | return sigma; |
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172 | } |
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173 | |
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174 | |
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175 | void G4XNNElasticLowE::Print() const |
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176 | { |
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177 | // Dump the pp cross-section table |
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178 | |
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179 | G4cout << Name() << ", pp cross-section: " << G4endl; |
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180 | |
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181 | G4bool dummy = false; |
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182 | G4int i; |
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183 | G4String key = G4Proton::ProtonDefinition()->GetParticleName(); |
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184 | G4PhysicsVector* pp = 0; |
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185 | |
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186 | typedef std::map <G4String, G4PhysicsVector*, std::less<G4String> > StringPhysMap; |
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187 | StringPhysMap::const_iterator iter; |
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188 | |
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189 | for (iter = xMap.begin(); iter != xMap.end(); ++iter) |
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190 | { |
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191 | G4String str = (*iter).first; |
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192 | if (str == key) |
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193 | { |
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194 | pp = (*iter).second; |
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195 | } |
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196 | } |
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197 | |
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198 | if (pp != 0) |
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199 | { |
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200 | for (i=0; i<tableSize; i++) |
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201 | { |
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202 | G4double e = pp->GetLowEdgeEnergy(i); |
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203 | G4double sigma = pp->GetValue(e,dummy) / millibarn; |
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204 | G4cout << i << ") e = " << e / GeV << " GeV ---- Cross section = " << sigma << " mb " << G4endl; |
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205 | } |
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206 | } |
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207 | |
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208 | // Dump the np cross-section table |
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209 | |
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210 | G4cout << Name() << ", np cross-section: " << G4endl; |
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211 | |
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212 | key = G4Neutron::NeutronDefinition()->GetParticleName(); |
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213 | G4PhysicsVector* np = 0; |
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214 | for (iter = xMap.begin(); iter != xMap.end(); ++iter) |
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215 | { |
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216 | G4String str = (*iter).first; |
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217 | if (str == key) |
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218 | { |
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219 | np = (*iter).second; |
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220 | } |
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221 | } |
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222 | |
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223 | // G4PhysicsVector* np = xMap[G4Neutron::NeutronDefinition()->GetParticleName()]; |
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224 | |
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225 | if (np != 0) |
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226 | { |
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227 | for (i=0; i<tableSize; i++) |
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228 | { |
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229 | G4double e = np->GetLowEdgeEnergy(i); |
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230 | G4double sigma = np->GetValue(e,dummy) / millibarn; |
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231 | G4cout << i << ") e = " << e / GeV << " GeV ---- Cross section = " << sigma << " mb " << G4endl; |
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232 | } |
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233 | } |
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234 | G4VCrossSectionSource::Print(); |
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235 | } |
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236 | |
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237 | |
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238 | G4String G4XNNElasticLowE::Name() const |
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239 | { |
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240 | G4String name("NNElasticLowE"); |
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241 | return name; |
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242 | } |
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243 | |
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244 | |
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245 | |
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246 | G4bool G4XNNElasticLowE::IsValid(G4double e) const |
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247 | { |
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248 | G4bool answer = InLimits(e,_lowLimit,_highLimit); |
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249 | |
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250 | return answer; |
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251 | } |
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252 | |
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253 | |
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