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 | // |
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27 | // $Id: G4DecayProducts.cc,v 1.19 2010/10/30 07:55:00 kurasige Exp $ |
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28 | // GEANT4 tag $Name: particles-V09-03-15 $ |
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29 | // |
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30 | // |
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31 | // ------------------------------------------------------------ |
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32 | // GEANT 4 class implementation file |
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33 | // |
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34 | // History: first implementation, based on object model of |
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35 | // 10 July 1996 H.Kurashige |
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36 | // 21 Oct 1996 H.Kurashige |
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37 | // 12 Dec 1997 H.Kurashige |
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38 | // ------------------------------------------------------------ |
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39 | |
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40 | #include "G4ios.hh" |
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41 | #include "globals.hh" |
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42 | #include "G4DecayProducts.hh" |
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43 | |
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44 | #include "G4LorentzVector.hh" |
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45 | #include "G4LorentzRotation.hh" |
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46 | |
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47 | G4Allocator<G4DecayProducts> aDecayProductsAllocator; |
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48 | |
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49 | |
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50 | G4DecayProducts::G4DecayProducts() |
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51 | :numberOfProducts(0),theParentParticle(0) |
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52 | { |
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53 | //clear theProductVector |
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54 | for (size_t i=0;i<MaxNumberOfProducts; i+=1){ |
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55 | theProductVector[i]=0; |
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56 | } |
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57 | } |
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58 | |
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59 | G4DecayProducts::G4DecayProducts(const G4DynamicParticle &aParticle) |
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60 | :numberOfProducts(0),theParentParticle(0) |
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61 | { |
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62 | theParentParticle = new G4DynamicParticle(aParticle); |
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63 | //clear theProductVector |
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64 | for (size_t i=0;i<MaxNumberOfProducts; i+=1){ |
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65 | theProductVector[i]=0; |
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66 | } |
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67 | } |
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68 | |
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69 | G4DecayProducts::G4DecayProducts(const G4DecayProducts &right) |
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70 | :numberOfProducts(0) |
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71 | { |
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72 | //clear theProductVector |
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73 | for (size_t i=0;i<MaxNumberOfProducts; i+=1){ |
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74 | theProductVector[i]=0; |
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75 | } |
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76 | |
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77 | // copy parent (Deep Copy) |
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78 | theParentParticle = new G4DynamicParticle(*right.theParentParticle); |
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79 | |
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80 | //copy daughters (Deep Copy) |
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81 | for (G4int index=0; index < right.numberOfProducts; index++) |
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82 | { |
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83 | G4DynamicParticle* daughter = right.theProductVector[index]; |
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84 | const G4DecayProducts* pPreAssigned = daughter->GetPreAssignedDecayProducts(); |
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85 | G4double properTime = daughter->GetPreAssignedDecayProperTime(); |
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86 | G4DynamicParticle* pDaughter = new G4DynamicParticle(*daughter); |
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87 | |
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88 | if (pPreAssigned) { |
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89 | G4DecayProducts* pPA = new G4DecayProducts(*pPreAssigned); |
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90 | pDaughter->SetPreAssignedDecayProducts(pPA); |
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91 | if(properTime>0.0) |
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92 | { pDaughter->SetPreAssignedDecayProperTime(properTime); } |
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93 | } |
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94 | |
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95 | PushProducts( pDaughter ); |
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96 | } |
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97 | } |
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98 | |
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99 | G4DecayProducts & G4DecayProducts::operator=(const G4DecayProducts &right) |
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100 | { |
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101 | G4int index; |
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102 | |
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103 | if (this != &right) |
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104 | { |
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105 | // recreate parent |
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106 | if (theParentParticle != 0) delete theParentParticle; |
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107 | theParentParticle = new G4DynamicParticle(*right.theParentParticle); |
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108 | |
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109 | // delete G4DynamicParticle objects |
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110 | for (index=0; index < numberOfProducts; index++) |
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111 | { |
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112 | delete theProductVector[index]; |
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113 | } |
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114 | |
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115 | //copy daughters (Deep Copy) |
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116 | for (index=0; index < right.numberOfProducts; index++) { |
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117 | PushProducts( new G4DynamicParticle(*right.theProductVector[index]) ); |
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118 | } |
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119 | numberOfProducts = right.numberOfProducts; |
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120 | |
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121 | } |
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122 | return *this; |
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123 | } |
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124 | |
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125 | G4DecayProducts::~G4DecayProducts() |
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126 | { |
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127 | //delete parent |
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128 | if (theParentParticle != 0) delete theParentParticle; |
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129 | |
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130 | // delete G4DynamicParticle object |
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131 | for (G4int index=0; index < numberOfProducts; index++) |
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132 | { |
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133 | delete theProductVector[index]; |
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134 | } |
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135 | numberOfProducts = 0; |
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136 | } |
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137 | |
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138 | G4DynamicParticle* G4DecayProducts::PopProducts() |
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139 | { |
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140 | if ( numberOfProducts >0 ) { |
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141 | numberOfProducts -= 1; |
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142 | return theProductVector[numberOfProducts]; |
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143 | } else { |
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144 | return 0; |
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145 | } |
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146 | } |
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147 | |
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148 | G4int G4DecayProducts::PushProducts(G4DynamicParticle *aParticle) |
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149 | { |
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150 | if ( numberOfProducts < MaxNumberOfProducts) { |
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151 | theProductVector[numberOfProducts]= aParticle; |
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152 | numberOfProducts += 1; |
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153 | } else { |
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154 | #ifdef G4VERBOSE |
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155 | G4cerr << "G4DecayProducts::PushProducts " |
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156 | << " exceeds MaxNumberOfProducts(=" |
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157 | << G4int(MaxNumberOfProducts) << ")" |
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158 | << G4endl; |
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159 | #endif |
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160 | } |
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161 | return numberOfProducts; |
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162 | } |
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163 | |
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164 | G4DynamicParticle* G4DecayProducts::operator[](G4int anIndex) const |
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165 | { |
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166 | if ((numberOfProducts > anIndex) && (anIndex >=0) ) { |
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167 | return theProductVector[anIndex]; |
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168 | } else { |
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169 | return 0; |
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170 | } |
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171 | } |
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172 | |
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173 | void G4DecayProducts::SetParentParticle(const G4DynamicParticle &aParticle) |
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174 | { |
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175 | if (theParentParticle != 0) delete theParentParticle; |
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176 | theParentParticle = new G4DynamicParticle(aParticle); |
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177 | } |
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178 | |
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179 | |
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180 | void G4DecayProducts::Boost(G4double totalEnergy, const G4ThreeVector &momentumDirection) |
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181 | { |
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182 | // calcurate new beta |
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183 | G4double mass = theParentParticle->GetMass(); |
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184 | G4double totalMomentum(0); |
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185 | if (totalEnergy > mass ) totalMomentum = std::sqrt( (totalEnergy - mass)*(totalEnergy + mass) ); |
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186 | G4double betax = momentumDirection.x()*totalMomentum/totalEnergy; |
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187 | G4double betay = momentumDirection.y()*totalMomentum/totalEnergy; |
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188 | G4double betaz = momentumDirection.z()*totalMomentum/totalEnergy; |
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189 | this->Boost(betax, betay, betaz); |
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190 | } |
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191 | |
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192 | void G4DecayProducts::Boost(G4double newbetax, G4double newbetay, G4double newbetaz) |
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193 | { |
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194 | G4double mass = theParentParticle->GetMass(); |
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195 | G4double energy = theParentParticle->GetTotalEnergy(); |
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196 | G4double momentum = 0.0; |
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197 | |
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198 | G4ThreeVector direction(0.0,0.0,1.0); |
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199 | G4LorentzVector p4; |
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200 | |
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201 | if (energy - mass > DBL_MIN) { |
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202 | // calcurate beta of initial state |
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203 | momentum = theParentParticle->GetTotalMomentum(); |
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204 | direction = theParentParticle->GetMomentumDirection(); |
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205 | G4double betax = -1.0*direction.x()*momentum/energy; |
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206 | G4double betay = -1.0*direction.y()*momentum/energy; |
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207 | G4double betaz = -1.0*direction.z()*momentum/energy; |
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208 | |
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209 | for (G4int index=0; index < numberOfProducts; index++) { |
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210 | // make G4LorentzVector for secondaries |
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211 | p4 = theProductVector[index]->Get4Momentum(); |
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212 | |
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213 | // boost secondaries to theParentParticle's rest frame |
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214 | p4.boost(betax, betay, betaz); |
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215 | |
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216 | // boost secondaries to new frame |
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217 | p4.boost(newbetax, newbetay, newbetaz); |
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218 | |
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219 | // change energy/momentum |
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220 | theProductVector[index]->Set4Momentum(p4); |
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221 | } |
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222 | } else { |
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223 | for (G4int index=0; index < numberOfProducts; index++) { |
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224 | // make G4LorentzVector for secondaries |
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225 | p4 = theProductVector[index]->Get4Momentum(); |
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226 | |
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227 | // boost secondaries to new frame |
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228 | p4.boost(newbetax, newbetay, newbetaz); |
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229 | |
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230 | // change energy/momentum |
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231 | theProductVector[index]->Set4Momentum(p4); |
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232 | } |
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233 | } |
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234 | // make G4LorentzVector for parent in its rest frame |
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235 | mass = theParentParticle->GetMass(); |
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236 | G4LorentzVector parent4( 0.0, 0.0, 0.0, mass); |
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237 | |
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238 | // boost parent to new frame |
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239 | parent4.boost(newbetax, newbetay, newbetaz); |
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240 | |
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241 | // change energy/momentum |
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242 | theParentParticle->Set4Momentum(parent4); |
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243 | } |
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244 | |
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245 | G4bool G4DecayProducts::IsChecked() const |
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246 | { |
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247 | G4bool returnValue = true; |
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248 | // check parent |
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249 | // energy/momentum |
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250 | G4double parent_energy = theParentParticle->GetTotalEnergy(); |
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251 | G4ThreeVector direction = theParentParticle->GetMomentumDirection(); |
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252 | G4ThreeVector parent_momentum = direction*(theParentParticle->GetTotalMomentum()); |
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253 | // check momentum dirction is a unit vector |
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254 | if ( (parent_momentum.mag() >0.0) && (std::fabs(direction.mag()-1.0) >1.0e-6 ) ) { |
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255 | #ifdef G4VERBOSE |
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256 | G4cerr << "G4DecayProducts::IsChecked():: " |
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257 | << " Momentum Direction Vector of Parent is not normalized " |
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258 | << " (=" << direction.mag() << ")" << G4endl; |
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259 | #endif |
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260 | returnValue = false; |
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261 | parent_momentum = parent_momentum * (1./direction.mag()); |
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262 | } |
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263 | |
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264 | //daughters |
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265 | G4double mass, energy; |
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266 | G4ThreeVector momentum; |
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267 | G4double total_energy = parent_energy; |
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268 | G4ThreeVector total_momentum = parent_momentum; |
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269 | for (G4int index=0; index < numberOfProducts; index++) |
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270 | { |
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271 | mass = theProductVector[index]->GetMass(); |
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272 | energy = theProductVector[index]->GetTotalEnergy(); |
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273 | direction = theProductVector[index]->GetMomentumDirection(); |
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274 | momentum = direction*(theProductVector[index]->GetTotalMomentum()); |
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275 | // check momentum dirction is a unit vector |
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276 | if ( (momentum.mag()>0.0) && (std::fabs(direction.mag()-1.0) > 1.0e-6)) { |
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277 | #ifdef G4VERBOSE |
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278 | G4cerr << "G4DecayProducts::IsChecked():: " |
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279 | << " Momentum Direction Vector of Daughter [" << index |
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280 | << "] is not normalized (=" << direction.mag() << ")" << G4endl; |
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281 | #endif |
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282 | returnValue = false; |
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283 | momentum = momentum * (1./direction.mag()); |
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284 | } |
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285 | // whether daughter stops or not |
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286 | if (energy - mass < DBL_MIN ) { |
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287 | #ifdef G4VERBOSE |
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288 | G4cerr << "G4DecayProducts::IsChecked():: " |
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289 | << " Daughter [" << index << "] has no kinetic energy "<< G4endl; |
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290 | #endif |
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291 | returnValue = false; |
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292 | } |
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293 | total_energy -= energy; |
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294 | total_momentum -= momentum; |
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295 | } |
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296 | // check energy/momentum conservation |
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297 | if ( (std::fabs(total_energy) >1.0e-9*MeV) || (total_momentum.mag() >1.0e-9*MeV ) ){ |
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298 | #ifdef G4VERBOSE |
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299 | G4cerr << "G4DecayProducts::IsChecked():: " |
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300 | << " Energy/Momentum is not conserved "<< G4endl; |
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301 | G4cerr << " difference between parent energy and sum of dughters' energy : " |
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302 | << total_energy /MeV << "[MeV] " << G4endl; |
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303 | G4cerr << " difference between parent momentum and sum of dughters' momentum : " |
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304 | << " x:" << total_momentum.getX()/MeV |
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305 | << " y:" << total_momentum.getY()/MeV |
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306 | << " z:" << total_momentum.getZ()/MeV |
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307 | << G4endl; |
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308 | #endif |
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309 | returnValue = false; |
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310 | } |
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311 | return returnValue; |
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312 | } |
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313 | |
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314 | void G4DecayProducts::DumpInfo() const |
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315 | { |
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316 | G4cout << " ----- List of DecayProducts -----" << G4endl; |
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317 | G4cout << " ------ Parent Particle ----------" << G4endl; |
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318 | if (theParentParticle != 0) theParentParticle->DumpInfo(); |
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319 | G4cout << " ------ Daughter Particles ------" << G4endl; |
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320 | for (G4int index=0; index < numberOfProducts; index++) |
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321 | { |
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322 | G4cout << " ----------" << index+1 << " -------------" << G4endl; |
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323 | theProductVector[index]-> DumpInfo(); |
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324 | } |
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325 | G4cout << " ----- End List of DecayProducts -----" << G4endl; |
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326 | G4cout << G4endl; |
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327 | } |
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