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 | // $Id: G4CollisionOutput.cc,v 1.37 2010/10/19 19:48:34 mkelsey Exp $ |
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26 | // Geant4 tag: $Name: hadr-casc-V09-03-85 $ |
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27 | // |
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28 | // 20100114 M. Kelsey -- Remove G4CascadeMomentum, use G4LorentzVector directly |
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29 | // 20100309 M. Kelsey -- Introduced bug checking i3 for valid tuning pair |
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30 | // 20100409 M. Kelsey -- Move non-inlinable code here out of .hh file, replace |
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31 | // loop over push_back() with block insert(). |
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32 | // 20100418 M. Kelsey -- Add function to boost output lists to lab frame |
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33 | // 20100520 M. Kelsey -- Add function to rotate Z axis, from G4Casc.Interface |
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34 | // 20100620 M. Kelsey -- Add some diagnostics in setOnShell, simplify if's |
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35 | // 20100630 M. Kelsey -- Use "getExcitationEnergyInGeV()" instead of ".001*" |
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36 | // 20100701 M. Kelsey -- G4InuclNuclei now includes excitation energy as part |
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37 | // of the reported mass and four-vector. |
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38 | // 20100714 M. Kelsey -- Modify setOnShell() to avoid creating particles |
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39 | // with negative kinetic energy. |
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40 | // 20100715 M. Kelsey -- Add total charge and baryon number functions, and a |
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41 | // combined "add()" function to put two of these together |
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42 | // 20100924 M. Kelsey -- Use "OutgoingNuclei" name consistently, replacing |
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43 | // old "TargetFragment". Add new (reusable) G4Fragment buffer |
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44 | // and access functions for initial post-cascade processing. |
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45 | // Move implementation of add() to .cc file. |
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46 | // 20101019 M. Kelsey -- CoVerity report: unitialized constructor |
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47 | |
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48 | #include "G4CollisionOutput.hh" |
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49 | #include "G4CascadParticle.hh" |
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50 | #include "G4ParticleLargerEkin.hh" |
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51 | #include "G4LorentzConvertor.hh" |
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52 | #include "G4LorentzRotation.hh" |
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53 | #include "G4ReactionProductVector.hh" |
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54 | #include "G4ReactionProduct.hh" |
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55 | #include <algorithm> |
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56 | |
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57 | typedef std::vector<G4InuclElementaryParticle>::iterator particleIterator; |
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58 | typedef std::vector<G4InuclNuclei>::iterator nucleiIterator; |
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59 | |
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60 | |
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61 | G4CollisionOutput::G4CollisionOutput() |
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62 | : verboseLevel(0), eex_rest(0), on_shell(false) { |
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63 | if (verboseLevel > 1) |
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64 | G4cout << " >>> G4CollisionOutput::G4CollisionOutput" << G4endl; |
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65 | } |
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66 | |
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67 | |
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68 | G4CollisionOutput& G4CollisionOutput::operator=(const G4CollisionOutput& right) |
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69 | { |
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70 | if (this != &right) { |
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71 | verboseLevel = right.verboseLevel; |
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72 | outgoingParticles = right.outgoingParticles; |
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73 | outgoingNuclei = right.outgoingNuclei; |
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74 | theRecoilFragment = right.theRecoilFragment; |
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75 | eex_rest = right.eex_rest; |
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76 | on_shell = right.on_shell; |
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77 | } |
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78 | return *this; |
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79 | } |
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80 | |
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81 | void G4CollisionOutput::reset() { |
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82 | outgoingNuclei.clear(); |
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83 | outgoingParticles.clear(); |
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84 | |
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85 | static const G4Fragment emptyFragment; // Default ctor is all zeros |
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86 | theRecoilFragment = emptyFragment; |
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87 | } |
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88 | |
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89 | |
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90 | // Merge two complete objects |
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91 | |
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92 | void G4CollisionOutput::add(const G4CollisionOutput& right) { |
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93 | addOutgoingParticles(right.outgoingParticles); |
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94 | addOutgoingNuclei(right.outgoingNuclei); |
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95 | theRecoilFragment = right.theRecoilFragment; |
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96 | } |
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97 | |
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98 | |
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99 | // Append to lists |
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100 | |
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101 | void G4CollisionOutput::addOutgoingParticles(const std::vector<G4InuclElementaryParticle>& particles) { |
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102 | outgoingParticles.insert(outgoingParticles.end(), |
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103 | particles.begin(), particles.end()); |
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104 | } |
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105 | |
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106 | void G4CollisionOutput::addOutgoingNuclei(const std::vector<G4InuclNuclei>& nuclea) { |
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107 | outgoingNuclei.insert(outgoingNuclei.end(), nuclea.begin(), nuclea.end()); |
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108 | } |
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109 | |
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110 | // These are primarily for G4IntraNucleiCascader internal checks |
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111 | |
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112 | void G4CollisionOutput::addOutgoingParticle(const G4CascadParticle& cparticle) { |
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113 | addOutgoingParticle(cparticle.getParticle()); |
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114 | } |
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115 | |
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116 | void G4CollisionOutput::addOutgoingParticles(const std::vector<G4CascadParticle>& cparticles) { |
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117 | for (unsigned i=0; i<cparticles.size(); i++) |
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118 | addOutgoingParticle(cparticles[i].getParticle()); |
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119 | } |
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120 | |
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121 | // This comes from PreCompound de-excitation, both particles and nuclei |
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122 | |
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123 | void G4CollisionOutput::addOutgoingParticles(const G4ReactionProductVector* rproducts) { |
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124 | if (!rproducts) return; // Sanity check, no error if null |
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125 | |
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126 | G4ReactionProductVector::const_iterator j; |
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127 | for (j=rproducts->begin(); j!=rproducts->end(); ++j) { |
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128 | G4ParticleDefinition* pd = (*j)->GetDefinition(); |
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129 | |
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130 | // FIXME: This is expensive and unnecessary copying! |
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131 | G4DynamicParticle aFragment(pd, (*j)->GetMomentum()); |
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132 | |
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133 | // Nucleons and nuclei are jumbled together in the list |
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134 | if (G4InuclElementaryParticle::type(pd)) { |
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135 | addOutgoingParticle(G4InuclElementaryParticle(aFragment, 9)); |
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136 | } else { |
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137 | addOutgoingNucleus(G4InuclNuclei(aFragment, 9)); |
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138 | } |
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139 | } |
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140 | } |
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141 | |
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142 | |
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143 | G4LorentzVector G4CollisionOutput::getTotalOutputMomentum() const { |
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144 | if (verboseLevel > 1) |
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145 | G4cout << " >>> G4CollisionOutput::getTotalOutputMomentum" << G4endl; |
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146 | |
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147 | G4LorentzVector tot_mom; |
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148 | G4int i(0); |
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149 | for(i=0; i < G4int(outgoingParticles.size()); i++) { |
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150 | tot_mom += outgoingParticles[i].getMomentum(); |
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151 | } |
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152 | for(i=0; i < G4int(outgoingNuclei.size()); i++) { |
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153 | tot_mom += outgoingNuclei[i].getMomentum(); |
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154 | } |
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155 | return tot_mom; |
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156 | } |
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157 | |
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158 | G4int G4CollisionOutput::getTotalCharge() const { |
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159 | if (verboseLevel > 1) |
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160 | G4cout << " >>> G4CollisionOutput::getTotalCharge" << G4endl; |
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161 | |
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162 | G4int charge = 0; |
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163 | G4int i(0); |
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164 | for(i=0; i < G4int(outgoingParticles.size()); i++) { |
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165 | charge += G4int(outgoingParticles[i].getCharge()); |
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166 | } |
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167 | for(i=0; i < G4int(outgoingNuclei.size()); i++) { |
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168 | charge += G4int(outgoingNuclei[i].getCharge()); |
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169 | } |
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170 | return charge; |
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171 | } |
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172 | |
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173 | G4int G4CollisionOutput::getTotalBaryonNumber() const { |
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174 | if (verboseLevel > 1) |
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175 | G4cout << " >>> G4CollisionOutput::getTotalBaryonNumber" << G4endl; |
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176 | |
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177 | G4int baryon = 0; |
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178 | G4int i(0); |
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179 | for(i=0; i < G4int(outgoingParticles.size()); i++) { |
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180 | baryon += outgoingParticles[i].baryon(); |
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181 | } |
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182 | for(i=0; i < G4int(outgoingNuclei.size()); i++) { |
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183 | baryon += G4int(outgoingNuclei[i].getA()); |
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184 | } |
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185 | return baryon; |
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186 | } |
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187 | |
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188 | |
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189 | void G4CollisionOutput::printCollisionOutput() const { |
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190 | G4cout << " Output: " << G4endl |
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191 | << " Outgoing Particles: " << outgoingParticles.size() << G4endl; |
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192 | |
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193 | G4int i(0); |
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194 | for(i=0; i < G4int(outgoingParticles.size()); i++) |
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195 | outgoingParticles[i].printParticle(); |
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196 | |
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197 | G4cout << " Outgoing Nuclei: " << outgoingNuclei.size() << G4endl; |
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198 | for(i=0; i < G4int(outgoingNuclei.size()); i++) |
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199 | outgoingNuclei[i].printParticle(); |
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200 | |
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201 | if (theRecoilFragment.GetA() > 0) { |
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202 | G4cout << theRecoilFragment << G4endl; |
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203 | } |
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204 | } |
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205 | |
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206 | |
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207 | // Boost particles and fragment to LAB -- "convertor" must already be configured |
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208 | |
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209 | void G4CollisionOutput::boostToLabFrame(const G4LorentzConvertor& convertor) { |
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210 | if (verboseLevel > 1) |
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211 | G4cout << " >>> G4CollisionOutput::boostToLabFrame" << G4endl; |
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212 | |
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213 | G4bool withReflection = convertor.reflectionNeeded(); |
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214 | |
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215 | if (!outgoingParticles.empty()) { |
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216 | particleIterator ipart = outgoingParticles.begin(); |
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217 | for(; ipart != outgoingParticles.end(); ipart++) { |
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218 | G4LorentzVector mom = ipart->getMomentum(); |
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219 | |
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220 | if (withReflection) mom.setZ(-mom.z()); |
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221 | mom = convertor.rotate(mom); |
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222 | mom = convertor.backToTheLab(mom); |
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223 | ipart->setMomentum(mom); |
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224 | } |
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225 | |
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226 | std::sort(outgoingParticles.begin(), outgoingParticles.end(), G4ParticleLargerEkin()); |
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227 | } |
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228 | |
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229 | if (!outgoingNuclei.empty()) { |
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230 | nucleiIterator inuc = outgoingNuclei.begin(); |
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231 | |
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232 | for (; inuc != outgoingNuclei.end(); inuc++) { |
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233 | G4LorentzVector mom = inuc->getMomentum(); |
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234 | |
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235 | if (withReflection) mom.setZ(-mom.z()); |
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236 | mom = convertor.rotate(mom); |
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237 | mom = convertor.backToTheLab(mom); |
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238 | inuc->setMomentum(mom); |
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239 | } |
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240 | } |
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241 | } |
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242 | |
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243 | |
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244 | // Apply LorentzRotation to all particles in event |
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245 | |
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246 | void G4CollisionOutput::rotateEvent(const G4LorentzRotation& rotate) { |
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247 | if (verboseLevel > 1) |
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248 | G4cout << " >>> G4CollisionOutput::rotateEvent" << G4endl; |
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249 | |
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250 | particleIterator ipart = outgoingParticles.begin(); |
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251 | for(; ipart != outgoingParticles.end(); ipart++) |
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252 | ipart->setMomentum(ipart->getMomentum()*=rotate); |
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253 | |
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254 | nucleiIterator inuc = outgoingNuclei.begin(); |
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255 | for (; inuc != outgoingNuclei.end(); inuc++) |
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256 | inuc->setMomentum(inuc->getMomentum()*=rotate); |
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257 | } |
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258 | |
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259 | |
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260 | void G4CollisionOutput::trivialise(G4InuclParticle* bullet, |
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261 | G4InuclParticle* target) { |
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262 | if (verboseLevel > 1) |
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263 | G4cout << " >>> G4CollisionOutput::trivialize" << G4endl; |
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264 | |
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265 | if (G4InuclNuclei* nuclei_target = dynamic_cast<G4InuclNuclei*>(target)) { |
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266 | outgoingNuclei.push_back(*nuclei_target); |
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267 | } else { |
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268 | G4InuclElementaryParticle* particle = |
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269 | dynamic_cast<G4InuclElementaryParticle*>(target); |
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270 | outgoingParticles.push_back(*particle); |
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271 | } |
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272 | |
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273 | if (G4InuclNuclei* nuclei_bullet = dynamic_cast<G4InuclNuclei*>(bullet)) { |
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274 | outgoingNuclei.push_back(*nuclei_bullet); |
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275 | } else { |
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276 | G4InuclElementaryParticle* particle = |
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277 | dynamic_cast<G4InuclElementaryParticle*>(bullet); |
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278 | outgoingParticles.push_back(*particle); |
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279 | } |
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280 | } |
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281 | |
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282 | |
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283 | void G4CollisionOutput::setOnShell(G4InuclParticle* bullet, |
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284 | G4InuclParticle* target) { |
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285 | if (verboseLevel > 1) |
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286 | G4cout << " >>> G4CollisionOutput::setOnShell" << G4endl; |
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287 | |
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288 | const G4double accuracy = 0.00001; // momentum concerves at the level of 10 keV |
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289 | |
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290 | on_shell = false; |
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291 | |
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292 | G4LorentzVector ini_mom = bullet->getMomentum(); |
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293 | G4LorentzVector momt = target->getMomentum(); |
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294 | |
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295 | ini_mom += momt; |
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296 | |
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297 | G4LorentzVector out_mom = getTotalOutputMomentum(); |
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298 | if(verboseLevel > 2){ |
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299 | G4cout << " bullet momentum = " << ini_mom.e() <<", "<< ini_mom.x() <<", "<< ini_mom.y()<<", "<< ini_mom.z()<<G4endl; |
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300 | G4cout << " target momentum = " << momt.e()<<", "<< momt.x()<<", "<< momt.y()<<", "<< momt.z()<<G4endl; |
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301 | G4cout << " Fstate momentum = " << out_mom.e()<<", "<< out_mom.x()<<", "<< out_mom.y()<<", "<< out_mom.z()<<G4endl; |
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302 | } |
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303 | |
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304 | G4LorentzVector mon_non_cons = ini_mom - out_mom; |
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305 | |
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306 | G4double pnc = mon_non_cons.rho(); |
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307 | G4double enc = mon_non_cons.e(); |
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308 | |
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309 | setRemainingExitationEnergy(); |
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310 | |
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311 | if(verboseLevel > 2){ |
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312 | printCollisionOutput(); |
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313 | G4cout << " momentum non conservation: " << G4endl |
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314 | << " e " << enc << " p " << pnc << G4endl; |
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315 | G4cout << " remaining exitation " << eex_rest << G4endl; |
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316 | } |
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317 | |
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318 | if(std::fabs(enc) <= accuracy && pnc <= accuracy) { |
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319 | on_shell = true; |
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320 | return; |
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321 | } |
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322 | |
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323 | // Adjust "last" particle's four-momentum to balance event |
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324 | // ONLY adjust particles with sufficient e or p to remain physical! |
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325 | |
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326 | if (verboseLevel > 2) G4cout << " re-balancing four-momenta" << G4endl; |
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327 | |
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328 | G4int npart = outgoingParticles.size(); |
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329 | G4int nnuc = outgoingNuclei.size(); |
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330 | if (npart > 0) { |
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331 | for (G4int ip=npart-1; ip>=0; ip--) { |
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332 | if (outgoingParticles[ip].getKineticEnergy()+enc > 0.) { |
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333 | G4LorentzVector last_mom = outgoingParticles[ip].getMomentum(); |
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334 | last_mom += mon_non_cons; |
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335 | outgoingParticles[ip].setMomentum(last_mom); |
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336 | break; |
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337 | } |
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338 | } |
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339 | } else if (nnuc > 0) { |
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340 | for (G4int in=nnuc-1; in>=0; in--) { |
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341 | if (outgoingNuclei[in].getKineticEnergy()+enc > 0.) { |
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342 | G4LorentzVector last_mom = outgoingNuclei[in].getMomentum(); |
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343 | last_mom += mon_non_cons; |
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344 | outgoingNuclei[in].setMomentum(last_mom); |
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345 | break; |
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346 | } |
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347 | } |
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348 | } |
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349 | |
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350 | out_mom = getTotalOutputMomentum(); |
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351 | mon_non_cons = ini_mom - out_mom; |
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352 | pnc = mon_non_cons.rho(); |
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353 | enc = mon_non_cons.e(); |
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354 | |
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355 | if(verboseLevel > 2){ |
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356 | printCollisionOutput(); |
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357 | G4cout << " momentum non conservation after (1): " << G4endl |
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358 | << " e " << enc << " p " << pnc << G4endl; |
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359 | } |
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360 | |
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361 | // Can energy be balanced just with nuclear excitation? |
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362 | G4bool need_hard_tuning = true; |
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363 | |
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364 | G4double encMeV = mon_non_cons.e() / GeV; // Excitation below is in MeV |
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365 | if (outgoingNuclei.size() > 0) { |
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366 | for (G4int i=0; i < G4int(outgoingNuclei.size()); i++) { |
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367 | G4double eex = outgoingNuclei[i].getExitationEnergy(); |
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368 | |
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369 | if(eex > 0.0 && eex + encMeV >= 0.0) { |
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370 | outgoingNuclei[i].setExitationEnergy(eex+encMeV); |
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371 | need_hard_tuning = false; |
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372 | break; |
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373 | } |
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374 | } |
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375 | if (need_hard_tuning && encMeV > 0.) { |
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376 | outgoingNuclei[0].setExitationEnergy(encMeV); |
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377 | need_hard_tuning = false; |
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378 | } |
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379 | } |
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380 | |
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381 | if (!need_hard_tuning) { |
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382 | on_shell = true; |
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383 | return; |
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384 | } |
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385 | |
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386 | // Momentum (hard) tuning required for energy conservation |
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387 | if (verboseLevel > 2) |
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388 | G4cout << " trying hard (particle-pair) tuning" << G4endl; |
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389 | |
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390 | std::pair<std::pair<G4int, G4int>, G4int> tune_par = selectPairToTune(mon_non_cons.e()); |
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391 | std::pair<G4int, G4int> tune_particles = tune_par.first; |
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392 | G4int mom_ind = tune_par.second; |
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393 | |
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394 | if(verboseLevel > 2) { |
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395 | G4cout << " p1 " << tune_particles.first << " p2 " << tune_particles.second |
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396 | << " ind " << mom_ind << G4endl; |
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397 | } |
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398 | |
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399 | G4bool tuning_possible = |
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400 | (tune_particles.first >= 0 && tune_particles.second >= 0 && |
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401 | mom_ind >= G4LorentzVector::X); |
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402 | |
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403 | if (!tuning_possible) { |
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404 | if (verboseLevel > 2) G4cout << " tuning impossible " << G4endl; |
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405 | return; |
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406 | } |
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407 | |
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408 | G4LorentzVector mom1 = outgoingParticles[tune_particles.first].getMomentum(); |
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409 | G4LorentzVector mom2 = outgoingParticles[tune_particles.second].getMomentum(); |
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410 | G4double newE12 = mom1.e() + mom2.e() + mon_non_cons.e(); |
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411 | G4double R = 0.5 * (newE12 * newE12 + mom2.e() * mom2.e() - mom1.e() * mom1.e()) / newE12; |
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412 | G4double Q = -(mom1[mom_ind] + mom2[mom_ind]) / newE12; |
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413 | G4double UDQ = 1.0 / (Q * Q - 1.0); |
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414 | G4double W = (R * Q + mom2[mom_ind]) * UDQ; |
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415 | G4double V = (mom2.e() * mom2.e() - R * R) * UDQ; |
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416 | G4double DET = W * W + V; |
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417 | |
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418 | if (DET < 0.0) { |
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419 | if (verboseLevel > 2) G4cout << " DET < 0 " << G4endl; |
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420 | return; |
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421 | } |
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422 | |
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423 | // Tuning allowed only for non-negative determinant |
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424 | G4double x1 = -(W + std::sqrt(DET)); |
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425 | G4double x2 = -(W - std::sqrt(DET)); |
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426 | |
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427 | // choose the appropriate solution |
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428 | G4bool xset = false; |
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429 | G4double x = 0.0; |
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430 | |
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431 | if(mon_non_cons.e() > 0.0) { // x has to be > 0.0 |
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432 | if(x1 > 0.0) { |
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433 | if(R + Q * x1 >= 0.0) { |
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434 | x = x1; |
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435 | xset = true; |
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436 | }; |
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437 | }; |
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438 | if(!xset && x2 > 0.0) { |
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439 | if(R + Q * x2 >= 0.0) { |
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440 | x = x2; |
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441 | xset = true; |
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442 | }; |
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443 | }; |
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444 | } else { |
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445 | if(x1 < 0.0) { |
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446 | if(R + Q * x1 >= 0.) { |
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447 | x = x1; |
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448 | xset = true; |
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449 | }; |
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450 | }; |
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451 | if(!xset && x2 < 0.0) { |
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452 | if(R + Q * x2 >= 0.0) { |
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453 | x = x2; |
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454 | xset = true; |
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455 | }; |
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456 | }; |
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457 | } // if(mon_non_cons.e() > 0.0) |
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458 | |
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459 | if(!xset) { |
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460 | if(verboseLevel > 2) |
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461 | G4cout << " no appropriate solution found " << G4endl; |
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462 | return; |
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463 | } // if(xset) |
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464 | |
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465 | // retune momentums |
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466 | mom1[mom_ind] += x; |
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467 | mom2[mom_ind] -= x; |
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468 | outgoingParticles[tune_particles.first ].setMomentum(mom1); |
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469 | outgoingParticles[tune_particles.second].setMomentum(mom2); |
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470 | out_mom = getTotalOutputMomentum(); |
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471 | std::sort(outgoingParticles.begin(), outgoingParticles.end(), G4ParticleLargerEkin()); |
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472 | mon_non_cons = ini_mom - out_mom; |
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473 | pnc = mon_non_cons.rho(); |
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474 | enc = mon_non_cons.e(); |
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475 | |
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476 | on_shell = (std::fabs(enc) < accuracy || pnc < accuracy); |
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477 | |
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478 | if(verboseLevel > 2) { |
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479 | G4cout << " momentum non conservation tuning: " << G4endl |
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480 | << " e " << enc << " p " << pnc |
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481 | << (on_shell?" success":" FAILURE") << G4endl; |
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482 | } |
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483 | } |
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484 | |
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485 | |
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486 | |
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487 | void G4CollisionOutput::setRemainingExitationEnergy() { |
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488 | eex_rest = 0.0; |
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489 | for(G4int i=0; i < G4int(outgoingNuclei.size()); i++) |
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490 | eex_rest += outgoingNuclei[i].getExitationEnergyInGeV(); |
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491 | } |
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492 | |
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493 | |
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494 | std::pair<std::pair<G4int, G4int>, G4int> |
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495 | G4CollisionOutput::selectPairToTune(G4double de) const { |
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496 | if (verboseLevel > 2) |
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497 | G4cout << " >>> G4CollisionOutput::selectPairToTune" << G4endl; |
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498 | |
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499 | std::pair<G4int, G4int> tup(-1, -1); |
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500 | G4int i3 = -1; |
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501 | std::pair<std::pair<G4int, G4int>, G4int> tuner(tup, i3); // Set invalid |
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502 | |
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503 | if (outgoingParticles.size() < 2) return tuner; // Nothing to do |
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504 | |
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505 | G4int ibest1 = -1; |
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506 | G4int ibest2 = -1; |
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507 | G4double pbest = 0.0; |
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508 | G4double pcut = 0.3 * std::sqrt(1.88 * std::fabs(de)); |
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509 | G4double p1 = 0.0; |
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510 | G4double p2; |
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511 | |
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512 | for (G4int i = 0; i < G4int(outgoingParticles.size())-1; i++) { |
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513 | G4LorentzVector mom1 = outgoingParticles[i].getMomentum(); |
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514 | |
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515 | for (G4int j = i+1; j < G4int(outgoingParticles.size()); j++) { |
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516 | G4LorentzVector mom2 = outgoingParticles[j].getMomentum(); |
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517 | |
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518 | for (G4int l = G4LorentzVector::X; l<=G4LorentzVector::Z; l++) { |
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519 | if (mom1[l]*mom2[l]<0.0) { |
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520 | if (std::fabs(mom1[l])>pcut && std::fabs(mom2[l])>pcut) { |
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521 | G4double psum = std::fabs(mom1[l]) + std::fabs(mom2[l]); |
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522 | |
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523 | if(psum > pbest) { |
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524 | ibest1 = i; |
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525 | ibest2 = j; |
---|
526 | i3 = l; |
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527 | p1 = mom1[l]; |
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528 | p2 = mom2[l]; |
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529 | pbest = psum; |
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530 | } // psum > pbest |
---|
531 | } // mom1 and mom2 > pcut |
---|
532 | } // mom1 ~ -mom2 |
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533 | } // for (G4int l ... |
---|
534 | } // for (G4int j ... |
---|
535 | } // for (G4int i ... |
---|
536 | |
---|
537 | if (i3 < 0) return tuner; |
---|
538 | |
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539 | tuner.second = i3; // Momentum axis for tuning |
---|
540 | |
---|
541 | // NOTE: Sign of de determines order for special case of p1==0. |
---|
542 | if (de > 0.0) { |
---|
543 | tuner.first.first = (p1>0.) ? ibest1 : ibest2; |
---|
544 | tuner.first.second = (p1>0.) ? ibest2 : ibest1; |
---|
545 | } else { |
---|
546 | tuner.first.first = (p1<0.) ? ibest2 : ibest1; |
---|
547 | tuner.first.second = (p1<0.) ? ibest1 : ibest2; |
---|
548 | } |
---|
549 | |
---|
550 | return tuner; |
---|
551 | } |
---|