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 | // $Id: G4PreCompoundCascadeInterface.cc,v 1.13.2.1 2010/06/25 09:45:00 gunter Exp $ |
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27 | // Geant4 tag: $Name: geant4-09-04-beta-01 $ |
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28 | // |
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29 | // 20100114 M. Kelsey -- Remove G4CascadeMomentum, use G4LorentzVector directly |
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30 | // 20100413 M. Kelsey -- Pass G4CollisionOutput by ref to ::collide() |
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31 | // 20100414 M. Kelsey -- Check for K0L/K0S before using G4InuclElemPart::type |
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32 | // 20100419 M. Kelsey -- Access G4CollisionOutput lists by const-ref, and |
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33 | // const_iterator |
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34 | // 20100428 M. Kelsey -- Use G4InuclParticleNames enum |
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35 | // 20100429 M. Kelsey -- Change "case gamma:" to "case photon:" |
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36 | // 20100517 M. Kelsey -- Follow new ctors for G4*Collider family. |
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37 | // 20100520 M. Kelsey -- Add missing name string to ctor, follow code changes |
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38 | // from G4CascadeInterface. |
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39 | |
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40 | #include "G4PreCompoundCascadeInterface.hh" |
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41 | #include "globals.hh" |
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42 | #include "G4CollisionOutput.hh" |
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43 | #include "G4DynamicParticle.hh" |
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44 | #include "G4InuclElementaryParticle.hh" |
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45 | #include "G4InuclNuclei.hh" |
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46 | #include "G4InuclParticle.hh" |
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47 | #include "G4InuclParticleNames.hh" |
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48 | #include "G4KaonZeroShort.hh" |
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49 | #include "G4KaonZeroLong.hh" |
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50 | #include "G4LorentzRotation.hh" |
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51 | #include "G4Nucleus.hh" |
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52 | #include "G4ParticleDefinition.hh" |
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53 | #include "G4PreCompoundInuclCollider.hh" |
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54 | #include "G4Track.hh" |
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55 | #include "G4V3DNucleus.hh" |
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56 | |
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57 | using namespace G4InuclParticleNames; |
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58 | |
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59 | |
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60 | typedef std::vector<G4InuclElementaryParticle>::const_iterator particleIterator; |
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61 | typedef std::vector<G4InuclNuclei>::const_iterator nucleiIterator; |
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62 | |
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63 | G4PreCompoundCascadeInterface::G4PreCompoundCascadeInterface(const G4String& nam) |
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64 | :G4VIntraNuclearTransportModel(nam), verboseLevel(0) { |
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65 | |
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66 | if (verboseLevel > 3) { |
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67 | G4cout << " >>> G4PreCompoundCascadeInterface::G4PreCompoundCascadeInterface" << G4endl; |
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68 | } |
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69 | } |
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70 | |
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71 | G4ReactionProductVector* G4PreCompoundCascadeInterface::Propagate(G4KineticTrackVector* , |
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72 | G4V3DNucleus* ) { |
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73 | return 0; |
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74 | } |
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75 | |
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76 | // #define debug_G4PreCompoundCascadeInterface |
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77 | |
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78 | G4HadFinalState* G4PreCompoundCascadeInterface::ApplyYourself(const G4HadProjectile& aTrack, |
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79 | G4Nucleus& theNucleus) { |
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80 | #ifdef debug_G4PreCompoundCascadeInterface |
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81 | static G4int counter(0); |
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82 | counter++; |
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83 | G4cerr << "Reaction number "<< counter << " "<<aTrack.GetDynamicParticle()->GetDefinition()->GetParticleName()<<" "<< aTrack.GetDynamicParticle()->GetKineticEnergy()<<G4endl; |
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84 | #endif |
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85 | |
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86 | theResult.Clear(); |
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87 | |
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88 | if (verboseLevel > 3) { |
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89 | G4cout << " >>> G4PreCompoundCascadeInterface::ApplyYourself" << G4endl; |
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90 | }; |
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91 | |
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92 | G4double eInit = 0.0; |
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93 | G4double eTot = 0.0; |
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94 | G4double sumBaryon = 0.0; |
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95 | G4double sumEnergy = 0.0; |
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96 | |
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97 | // Make conversion between native Geant4 and Bertini cascade classes. |
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98 | // NOTE: Geant4 units are MeV = 1 and GeV = 1000. Cascade code by default use GeV = 1. |
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99 | |
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100 | G4int bulletType; |
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101 | if (aTrack.GetDefinition() == G4KaonZeroLong::KaonZeroLong() || |
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102 | aTrack.GetDefinition() == G4KaonZeroShort::KaonZeroShort() ) |
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103 | bulletType = (G4UniformRand() > 0.5) ? kaonZero : kaonZeroBar; |
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104 | else |
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105 | bulletType = G4InuclElementaryParticle::type(aTrack.GetDefinition()); |
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106 | |
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107 | // Code momentum and energy. |
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108 | G4LorentzVector projectileMomentum = aTrack.Get4Momentum(); |
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109 | G4LorentzRotation toZ; |
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110 | toZ.rotateZ(-projectileMomentum.phi()); |
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111 | toZ.rotateY(-projectileMomentum.theta()); |
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112 | G4LorentzRotation toLabFrame = toZ.inverse(); |
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113 | |
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114 | G4LorentzVector momentumBullet(0., 0., aTrack.GetTotalMomentum()/GeV, |
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115 | aTrack.GetTotalEnergy()/GeV); |
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116 | |
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117 | G4InuclElementaryParticle * bullet = |
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118 | new G4InuclElementaryParticle(momentumBullet, bulletType); |
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119 | |
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120 | sumEnergy = bullet->getKineticEnergy(); // In GeV |
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121 | sumBaryon += bullet->baryon(); |
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122 | |
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123 | // Set target |
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124 | G4InuclNuclei* target = 0; |
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125 | G4InuclParticle* targetH = 0; |
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126 | |
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127 | G4double theNucleusA = theNucleus.GetN(); |
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128 | |
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129 | if ( !(G4int(theNucleusA) == 1) ) { |
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130 | target = new G4InuclNuclei(theNucleusA, theNucleus.GetZ()); |
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131 | eInit = bullet->getEnergy() + target->getEnergy(); |
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132 | |
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133 | sumBaryon += theNucleusA; |
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134 | |
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135 | if (verboseLevel > 2) { |
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136 | G4cout << "Bullet: " << G4endl; |
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137 | bullet->printParticle(); |
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138 | } |
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139 | if (verboseLevel > 2) { |
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140 | G4cout << "Target: " << G4endl; |
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141 | target->printParticle(); |
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142 | } |
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143 | } |
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144 | |
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145 | G4CollisionOutput output; |
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146 | |
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147 | // Colliders initialisation |
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148 | G4PreCompoundInuclCollider* collider = new G4PreCompoundInuclCollider; |
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149 | |
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150 | G4int maxTries = 10; // maximum tries for inelastic collision to avoid infinite loop |
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151 | G4int nTries = 0; // try counter |
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152 | |
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153 | if (G4int(theNucleusA) == 1) { // special treatment for target H(1,1) (proton) |
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154 | |
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155 | targetH = new G4InuclElementaryParticle(1); |
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156 | |
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157 | G4float cutElastic[32]; |
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158 | |
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159 | cutElastic[proton ] = 1.0; // 1 GeV |
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160 | cutElastic[neutron ] = 1.0; |
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161 | cutElastic[lambda] = 1.0; |
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162 | cutElastic[sigmaPlus] = 1.0; |
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163 | cutElastic[sigmaZero] = 1.0; |
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164 | cutElastic[sigmaMinus] = 1.0; |
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165 | cutElastic[xiZero] = 1.0; |
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166 | cutElastic[xiMinus] = 1.0; |
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167 | |
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168 | cutElastic[pionPlus ] = 0.6; // 0.6 GeV |
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169 | |
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170 | cutElastic[kaonPlus ] = 0.5; // 0.5 GeV |
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171 | cutElastic[kaonMinus] = 0.5; |
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172 | cutElastic[kaonZero] = 0.5; |
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173 | cutElastic[kaonZeroBar] = 0.5; |
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174 | |
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175 | cutElastic[pionMinus] = 0.2; // 0.2 GeV |
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176 | cutElastic[pionZero ] = 0.2; |
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177 | |
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178 | |
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179 | if (momentumBullet.z() > cutElastic[bulletType]) { // inelastic collision possible |
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180 | |
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181 | do { // we try to create inelastic interaction |
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182 | output.reset(); |
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183 | collider->collide(bullet, targetH, output); |
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184 | nTries++; |
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185 | } while( |
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186 | (nTries < maxTries) && |
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187 | (output.getOutgoingParticles().size() == 2 && // elastic: bullet + p = H(1,1) coming out |
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188 | (output.getOutgoingParticles().begin()->type() == bulletType || output.getOutgoingParticles().begin()->type() == proton) |
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189 | ) |
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190 | ); |
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191 | |
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192 | } else { // only elastic collision is energetically possible |
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193 | collider->collide(bullet, targetH, output); |
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194 | } |
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195 | |
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196 | sumBaryon += 1; |
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197 | |
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198 | eInit = bullet->getEnergy() + target->getEnergy(); |
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199 | |
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200 | if (verboseLevel > 2) { |
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201 | G4cout << "Target: " << G4endl; |
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202 | targetH->printParticle(); |
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203 | } |
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204 | |
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205 | } else { // treat all other targets excepet H(1,1) |
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206 | |
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207 | do // we try to create inelastic interaction |
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208 | { |
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209 | output.reset(); |
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210 | collider->collide(bullet, target, output); |
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211 | nTries++; |
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212 | } while ( |
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213 | (nTries < maxTries) && |
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214 | output.getOutgoingParticles().size() == 1 && // we retry when elastic collision happened |
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215 | output.getNucleiFragments().size() == 1 && |
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216 | output.getOutgoingParticles().begin()->type() == bullet->type() && |
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217 | output.getNucleiFragments().begin()->getA() == target->getA() && |
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218 | output.getNucleiFragments().begin()->getZ() == target->getZ() |
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219 | ); |
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220 | } |
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221 | |
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222 | if (verboseLevel > 1) { |
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223 | G4cout << " Cascade output: " << G4endl; |
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224 | output.printCollisionOutput(); |
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225 | } |
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226 | |
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227 | // Rotate event to put Z axis along original projectile direction |
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228 | output.rotateEvent(toLabFrame); |
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229 | |
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230 | // Convert cascade data to use hadronics interface |
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231 | const std::vector<G4InuclNuclei>& nucleiFragments = output.getNucleiFragments(); |
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232 | const std::vector<G4InuclElementaryParticle>& particles = output.getOutgoingParticles(); |
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233 | |
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234 | theResult.SetStatusChange(stopAndKill); |
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235 | |
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236 | // Get outcoming particles |
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237 | G4DynamicParticle* cascadeParticle = 0; |
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238 | if (!particles.empty()) { |
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239 | particleIterator ipart = particles.begin(); |
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240 | for (; ipart != particles.end(); ipart++) { |
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241 | G4int outgoingType = ipart->type(); |
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242 | |
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243 | eTot += ipart->getEnergy(); |
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244 | sumBaryon -= ipart->baryon(); |
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245 | sumEnergy -= ipart->getKineticEnergy(); |
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246 | |
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247 | if (!ipart->valid() || ipart->quasi_deutron()) { |
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248 | G4cerr << " ERROR: G4PreCompoundCascadeInterface::Propagate incompatible" |
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249 | << " particle type " << ipart->type() << G4endl; |
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250 | continue; |
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251 | } |
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252 | |
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253 | // Copy local G4DynPart to public output (handle kaon mixing specially) |
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254 | if (outgoingType == kaonZero || outgoingType == kaonZeroBar) { |
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255 | G4ThreeVector momDir = ipart->getMomentum().vect().unit(); |
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256 | G4double ekin = ipart->getKineticEnergy(); |
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257 | |
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258 | G4ParticleDefinition* pd = G4KaonZeroShort::Definition(); |
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259 | if (G4UniformRand() > 0.5) pd = G4KaonZeroLong::Definition(); |
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260 | |
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261 | cascadeParticle = new G4DynamicParticle(pd, momDir, ekin); |
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262 | } else { |
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263 | cascadeParticle = new G4DynamicParticle(ipart->getDynamicParticle()); |
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264 | } |
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265 | |
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266 | theResult.AddSecondary(cascadeParticle); |
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267 | } |
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268 | } |
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269 | |
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270 | // get nuclei fragments |
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271 | G4DynamicParticle * aFragment = 0; |
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272 | if (!nucleiFragments.empty()) { |
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273 | nucleiIterator ifrag = nucleiFragments.begin(); |
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274 | for (; ifrag != nucleiFragments.end(); ifrag++) { |
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275 | eTot += ifrag->getEnergy(); |
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276 | sumBaryon -= ifrag->getA(); |
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277 | sumEnergy -= ifrag->getKineticEnergy(); |
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278 | |
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279 | if (verboseLevel > 2) { |
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280 | G4cout << " Nuclei fragment: " << G4endl; |
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281 | ifrag->printParticle(); |
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282 | } |
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283 | |
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284 | // Copy local G4DynPart to public output |
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285 | aFragment = new G4DynamicParticle(ifrag->getDynamicParticle()); |
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286 | theResult.AddSecondary(aFragment); |
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287 | } |
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288 | } |
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289 | |
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290 | // Report violations of energy, baryon conservation |
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291 | if (verboseLevel > 2) { |
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292 | if (sumBaryon != 0) { |
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293 | G4cout << "ERROR: no baryon number conservation, sum of baryons = " |
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294 | << sumBaryon << G4endl; |
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295 | } |
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296 | |
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297 | if (sumEnergy > 0.01 ) { |
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298 | G4cout << "Kinetic energy conservation violated by " |
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299 | << sumEnergy << " GeV" << G4endl; |
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300 | } |
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301 | |
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302 | G4cout << "Total energy conservation at level ~" |
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303 | << (eInit - eTot) * GeV << " MeV" << G4endl; |
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304 | |
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305 | if (sumEnergy < -5.0e-5 ) { // 0.05 MeV |
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306 | G4cout << "FATAL ERROR: energy created " |
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307 | << sumEnergy * GeV << " MeV" << G4endl; |
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308 | } |
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309 | } |
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310 | |
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311 | delete bullet; |
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312 | delete collider; |
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313 | |
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314 | if(target != 0) delete target; |
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315 | if(targetH != 0) delete targetH; |
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316 | |
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317 | return &theResult; |
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318 | } |
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