[824] | 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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[1315] | 27 | // $Id: G4DecayProducts.cc,v 1.18 2010/05/20 01:01:07 kurasige Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-04-beta-cand-01 $ |
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[824] | 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 | |
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| 54 | } |
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| 55 | |
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| 56 | G4DecayProducts::G4DecayProducts(const G4DynamicParticle &aParticle) |
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| 57 | :numberOfProducts(0),theParentParticle(0) |
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| 58 | { |
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| 59 | theParentParticle = new G4DynamicParticle(aParticle); |
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| 60 | } |
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| 61 | |
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| 62 | G4DecayProducts::G4DecayProducts(const G4DecayProducts &right) |
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| 63 | :numberOfProducts(0) |
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| 64 | { |
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| 65 | // copy parent (Deep Copy) |
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| 66 | theParentParticle = new G4DynamicParticle(*right.theParentParticle); |
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| 67 | |
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| 68 | //copy daughters (Deep Copy) |
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| 69 | for (G4int index=0; index < right.numberOfProducts; index++) |
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| 70 | { |
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| 71 | G4DynamicParticle* daughter = right.theProductVector[index]; |
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| 72 | const G4DecayProducts* pPreAssigned = daughter->GetPreAssignedDecayProducts(); |
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| 73 | G4double properTime = daughter->GetPreAssignedDecayProperTime(); |
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| 74 | G4DynamicParticle* pDaughter = new G4DynamicParticle(*daughter); |
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| 75 | |
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| 76 | if (pPreAssigned) { |
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| 77 | G4DecayProducts* pPA = new G4DecayProducts(*pPreAssigned); |
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| 78 | pDaughter->SetPreAssignedDecayProducts(pPA); |
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| 79 | if(properTime>0.0) |
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| 80 | { pDaughter->SetPreAssignedDecayProperTime(properTime); } |
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| 81 | } |
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| 82 | |
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| 83 | PushProducts( pDaughter ); |
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| 84 | } |
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| 85 | } |
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| 86 | |
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| 87 | G4DecayProducts & G4DecayProducts::operator=(const G4DecayProducts &right) |
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| 88 | { |
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| 89 | G4int index; |
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| 90 | |
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| 91 | if (this != &right) |
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| 92 | { |
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| 93 | // recreate parent |
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| 94 | if (theParentParticle != 0) delete theParentParticle; |
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| 95 | theParentParticle = new G4DynamicParticle(*right.theParentParticle); |
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| 96 | |
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| 97 | // delete G4DynamicParticle objects |
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| 98 | for (index=0; index < numberOfProducts; index++) |
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| 99 | { |
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| 100 | delete theProductVector[index]; |
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| 101 | } |
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| 102 | |
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| 103 | //copy daughters (Deep Copy) |
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| 104 | for (index=0; index < right.numberOfProducts; index++) { |
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| 105 | PushProducts( new G4DynamicParticle(*right.theProductVector[index]) ); |
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| 106 | } |
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| 107 | numberOfProducts = right.numberOfProducts; |
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| 108 | |
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| 109 | } |
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| 110 | return *this; |
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| 111 | } |
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| 112 | |
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| 113 | G4DecayProducts::~G4DecayProducts() |
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| 114 | { |
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| 115 | //delete parent |
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| 116 | if (theParentParticle != 0) delete theParentParticle; |
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| 117 | |
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| 118 | // delete G4DynamicParticle object |
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| 119 | for (G4int index=0; index < numberOfProducts; index++) |
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| 120 | { |
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| 121 | delete theProductVector[index]; |
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| 122 | } |
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| 123 | numberOfProducts = 0; |
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| 124 | } |
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| 125 | |
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| 126 | G4DynamicParticle* G4DecayProducts::PopProducts() |
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| 127 | { |
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| 128 | if ( numberOfProducts >0 ) { |
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| 129 | numberOfProducts -= 1; |
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| 130 | return theProductVector[numberOfProducts]; |
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| 131 | } else { |
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| 132 | return 0; |
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| 133 | } |
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| 134 | } |
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| 135 | |
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| 136 | G4int G4DecayProducts::PushProducts(G4DynamicParticle *aParticle) |
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| 137 | { |
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| 138 | if ( numberOfProducts < MaxNumberOfProducts) { |
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| 139 | theProductVector[numberOfProducts]= aParticle; |
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| 140 | numberOfProducts += 1; |
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| 141 | } else { |
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| 142 | #ifdef G4VERBOSE |
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[1315] | 143 | G4cerr << "G4DecayProducts::PushProducts " |
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| 144 | << " exceeds MaxNumberOfProducts(=" |
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| 145 | << G4int(MaxNumberOfProducts) << ")" |
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| 146 | << G4endl; |
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[824] | 147 | #endif |
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| 148 | } |
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| 149 | return numberOfProducts; |
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| 150 | } |
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| 151 | |
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| 152 | G4DynamicParticle* G4DecayProducts::operator[](G4int anIndex) const |
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| 153 | { |
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| 154 | if ((numberOfProducts > anIndex) && (anIndex >=0) ) { |
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| 155 | return theProductVector[anIndex]; |
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| 156 | } else { |
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| 157 | return 0; |
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| 158 | } |
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| 159 | } |
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| 160 | |
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| 161 | void G4DecayProducts::SetParentParticle(const G4DynamicParticle &aParticle) |
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| 162 | { |
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| 163 | if (theParentParticle != 0) delete theParentParticle; |
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| 164 | theParentParticle = new G4DynamicParticle(aParticle); |
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| 165 | } |
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| 166 | |
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| 167 | |
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| 168 | void G4DecayProducts::Boost(G4double totalEnergy, const G4ThreeVector &momentumDirection) |
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| 169 | { |
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| 170 | // calcurate new beta |
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| 171 | G4double mass = theParentParticle->GetMass(); |
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| 172 | G4double totalMomentum(0); |
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| 173 | if (totalEnergy > mass ) totalMomentum = std::sqrt( (totalEnergy - mass)*(totalEnergy + mass) ); |
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| 174 | G4double betax = momentumDirection.x()*totalMomentum/totalEnergy; |
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| 175 | G4double betay = momentumDirection.y()*totalMomentum/totalEnergy; |
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| 176 | G4double betaz = momentumDirection.z()*totalMomentum/totalEnergy; |
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| 177 | this->Boost(betax, betay, betaz); |
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| 178 | } |
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| 179 | |
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| 180 | void G4DecayProducts::Boost(G4double newbetax, G4double newbetay, G4double newbetaz) |
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| 181 | { |
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| 182 | G4double mass = theParentParticle->GetMass(); |
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| 183 | G4double energy = theParentParticle->GetTotalEnergy(); |
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| 184 | G4double momentum = 0.0; |
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| 185 | |
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| 186 | G4ThreeVector direction(0.0,0.0,1.0); |
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| 187 | G4LorentzVector p4; |
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| 188 | |
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| 189 | if (energy - mass > DBL_MIN) { |
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| 190 | // calcurate beta of initial state |
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| 191 | momentum = theParentParticle->GetTotalMomentum(); |
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| 192 | direction = theParentParticle->GetMomentumDirection(); |
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| 193 | G4double betax = -1.0*direction.x()*momentum/energy; |
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| 194 | G4double betay = -1.0*direction.y()*momentum/energy; |
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| 195 | G4double betaz = -1.0*direction.z()*momentum/energy; |
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| 196 | |
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| 197 | for (G4int index=0; index < numberOfProducts; index++) { |
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| 198 | // make G4LorentzVector for secondaries |
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| 199 | p4 = theProductVector[index]->Get4Momentum(); |
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| 200 | |
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| 201 | // boost secondaries to theParentParticle's rest frame |
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| 202 | p4.boost(betax, betay, betaz); |
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| 203 | |
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| 204 | // boost secondaries to new frame |
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| 205 | p4.boost(newbetax, newbetay, newbetaz); |
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| 206 | |
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| 207 | // change energy/momentum |
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| 208 | theProductVector[index]->Set4Momentum(p4); |
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| 209 | } |
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| 210 | } else { |
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| 211 | for (G4int index=0; index < numberOfProducts; index++) { |
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| 212 | // make G4LorentzVector for secondaries |
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| 213 | p4 = theProductVector[index]->Get4Momentum(); |
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| 214 | |
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| 215 | // boost secondaries to new frame |
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| 216 | p4.boost(newbetax, newbetay, newbetaz); |
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| 217 | |
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| 218 | // change energy/momentum |
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| 219 | theProductVector[index]->Set4Momentum(p4); |
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| 220 | } |
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| 221 | } |
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| 222 | // make G4LorentzVector for parent in its rest frame |
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| 223 | mass = theParentParticle->GetMass(); |
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| 224 | G4LorentzVector parent4( 0.0, 0.0, 0.0, mass); |
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| 225 | |
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| 226 | // boost parent to new frame |
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| 227 | parent4.boost(newbetax, newbetay, newbetaz); |
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| 228 | |
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| 229 | // change energy/momentum |
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| 230 | theParentParticle->Set4Momentum(parent4); |
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| 231 | } |
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| 232 | |
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| 233 | G4bool G4DecayProducts::IsChecked() const |
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| 234 | { |
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| 235 | G4bool returnValue = true; |
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| 236 | // check parent |
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| 237 | // energy/momentum |
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| 238 | G4double parent_energy = theParentParticle->GetTotalEnergy(); |
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| 239 | G4ThreeVector direction = theParentParticle->GetMomentumDirection(); |
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| 240 | G4ThreeVector parent_momentum = direction*(theParentParticle->GetTotalMomentum()); |
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| 241 | // check momentum dirction is a unit vector |
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[1196] | 242 | if ( (parent_momentum.mag() >0.0) && (std::fabs(direction.mag()-1.0) >1.0e-6 ) ) { |
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[824] | 243 | #ifdef G4VERBOSE |
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[1315] | 244 | G4cerr << "G4DecayProducts::IsChecked():: " |
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| 245 | << " Momentum Direction Vector of Parent is not normalized " |
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| 246 | << " (=" << direction.mag() << ")" << G4endl; |
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[824] | 247 | #endif |
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| 248 | returnValue = false; |
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| 249 | parent_momentum = parent_momentum * (1./direction.mag()); |
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| 250 | } |
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| 251 | |
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| 252 | //daughters |
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| 253 | G4double mass, energy; |
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| 254 | G4ThreeVector momentum; |
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| 255 | G4double total_energy = parent_energy; |
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| 256 | G4ThreeVector total_momentum = parent_momentum; |
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| 257 | for (G4int index=0; index < numberOfProducts; index++) |
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| 258 | { |
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| 259 | mass = theProductVector[index]->GetMass(); |
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| 260 | energy = theProductVector[index]->GetTotalEnergy(); |
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| 261 | direction = theProductVector[index]->GetMomentumDirection(); |
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| 262 | momentum = direction*(theProductVector[index]->GetTotalMomentum()); |
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| 263 | // check momentum dirction is a unit vector |
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[1196] | 264 | if ( (momentum.mag()>0.0) && (std::fabs(direction.mag()-1.0) > 1.0e-6)) { |
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[824] | 265 | #ifdef G4VERBOSE |
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[1315] | 266 | G4cerr << "G4DecayProducts::IsChecked():: " |
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| 267 | << " Momentum Direction Vector of Daughter [" << index |
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| 268 | << "] is not normalized (=" << direction.mag() << ")" << G4endl; |
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[824] | 269 | #endif |
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| 270 | returnValue = false; |
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| 271 | momentum = momentum * (1./direction.mag()); |
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| 272 | } |
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| 273 | // whether daughter stops or not |
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| 274 | if (energy - mass < DBL_MIN ) { |
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| 275 | #ifdef G4VERBOSE |
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[1315] | 276 | G4cerr << "G4DecayProducts::IsChecked():: " |
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| 277 | << " Daughter [" << index << "] has no kinetic energy "<< G4endl; |
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[824] | 278 | #endif |
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| 279 | returnValue = false; |
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| 280 | } |
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| 281 | total_energy -= energy; |
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| 282 | total_momentum -= momentum; |
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| 283 | } |
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| 284 | // check energy/momentum conservation |
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[1196] | 285 | if ( (std::fabs(total_energy) >1.0e-9*MeV) || (total_momentum.mag() >1.0e-9*MeV ) ){ |
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[824] | 286 | #ifdef G4VERBOSE |
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[1315] | 287 | G4cerr << "G4DecayProducts::IsChecked():: " |
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| 288 | << " Energy/Momentum is not conserved "<< G4endl; |
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| 289 | G4cerr << " difference between parent energy and sum of dughters' energy : " |
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[824] | 290 | << total_energy /MeV << "[MeV] " << G4endl; |
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[1315] | 291 | G4cerr << " difference between parent momentum and sum of dughters' momentum : " |
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[824] | 292 | << " x:" << total_momentum.getX()/MeV |
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| 293 | << " y:" << total_momentum.getY()/MeV |
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| 294 | << " z:" << total_momentum.getZ()/MeV |
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| 295 | << G4endl; |
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| 296 | #endif |
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| 297 | returnValue = false; |
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| 298 | } |
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| 299 | return returnValue; |
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| 300 | } |
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| 301 | |
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| 302 | void G4DecayProducts::DumpInfo() const |
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| 303 | { |
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| 304 | G4cout << " ----- List of DecayProducts -----" << G4endl; |
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| 305 | G4cout << " ------ Parent Particle ----------" << G4endl; |
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| 306 | if (theParentParticle != 0) theParentParticle->DumpInfo(); |
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| 307 | G4cout << " ------ Daughter Particles ------" << G4endl; |
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| 308 | for (G4int index=0; index < numberOfProducts; index++) |
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| 309 | { |
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| 310 | G4cout << " ----------" << index+1 << " -------------" << G4endl; |
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| 311 | theProductVector[index]-> DumpInfo(); |
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| 312 | } |
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| 313 | G4cout << " ----- End List of DecayProducts -----" << G4endl; |
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| 314 | G4cout << G4endl; |
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| 315 | } |
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