| 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 | // |
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| 28 | // J.L. Chuma, TRIUMF, 31-Oct-1996 |
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| 29 | // last modified: 19-Dec-1996 |
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| 30 | // Modified by J.L.Chuma, 05-May-97 |
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| 31 | |
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| 32 | #include "G4ReactionProduct.hh" |
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| 33 | |
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| 34 | G4ReactionProduct::G4ReactionProduct() : |
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| 35 | theParticleDefinition(NULL), |
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| 36 | formationTime(0.0), |
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| 37 | hasInitialStateParton(false), |
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| 38 | mass(0.0), |
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| 39 | totalEnergy(0.0), |
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| 40 | kineticEnergy(0.0), |
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| 41 | timeOfFlight(0.0), |
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| 42 | side(0), |
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| 43 | NewlyAdded(false), |
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| 44 | MayBeKilled(true) |
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| 45 | { |
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| 46 | SetMomentum( 0.0, 0.0, 0.0 ); |
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| 47 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 48 | } |
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| 49 | |
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| 50 | G4ReactionProduct::G4ReactionProduct( |
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| 51 | G4ParticleDefinition *aParticleDefinition ) |
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| 52 | { |
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| 53 | SetMomentum( 0.0, 0.0, 0.0 ); |
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| 54 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 55 | formationTime = 0.0; |
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| 56 | hasInitialStateParton = false; |
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| 57 | theParticleDefinition = aParticleDefinition; |
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| 58 | mass = aParticleDefinition->GetPDGMass(); |
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| 59 | totalEnergy = mass; |
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| 60 | kineticEnergy = 0.0; |
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| 61 | (aParticleDefinition->GetPDGEncoding()<0) ? timeOfFlight=-1.0 : timeOfFlight=1.0; |
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| 62 | side = 0; |
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| 63 | NewlyAdded = false; |
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| 64 | MayBeKilled = true; |
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| 65 | } |
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| 66 | |
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| 67 | G4ReactionProduct::G4ReactionProduct( |
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| 68 | const G4ReactionProduct &right ) |
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| 69 | { |
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| 70 | theParticleDefinition = right.theParticleDefinition; |
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| 71 | positionInNucleus = right.positionInNucleus; |
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| 72 | formationTime = right.formationTime; |
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| 73 | hasInitialStateParton = right.hasInitialStateParton; |
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| 74 | momentum = right.momentum; |
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| 75 | mass = right.mass; |
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| 76 | totalEnergy = right.totalEnergy; |
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| 77 | kineticEnergy = right.kineticEnergy; |
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| 78 | timeOfFlight = right.timeOfFlight; |
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| 79 | side = right.side; |
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| 80 | NewlyAdded = right.NewlyAdded; |
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| 81 | MayBeKilled = right.MayBeKilled; |
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| 82 | } |
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| 83 | |
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| 84 | G4ReactionProduct &G4ReactionProduct::operator=( |
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| 85 | const G4ReactionProduct &right ) |
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| 86 | { |
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| 87 | if( this != &right ) { |
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| 88 | theParticleDefinition = right.theParticleDefinition; |
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| 89 | positionInNucleus = right.positionInNucleus; |
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| 90 | formationTime = right.formationTime; |
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| 91 | hasInitialStateParton = right.hasInitialStateParton; |
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| 92 | momentum = right.momentum; |
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| 93 | mass = right.mass; |
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| 94 | totalEnergy = right.totalEnergy; |
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| 95 | kineticEnergy = right.kineticEnergy; |
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| 96 | timeOfFlight = right.timeOfFlight; |
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| 97 | side = right.side; |
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| 98 | NewlyAdded = right.NewlyAdded; |
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| 99 | MayBeKilled = right.MayBeKilled; |
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| 100 | } |
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| 101 | return *this; |
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| 102 | } |
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| 103 | |
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| 104 | G4ReactionProduct &G4ReactionProduct::operator=( |
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| 105 | const G4DynamicParticle &right ) |
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| 106 | { |
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| 107 | theParticleDefinition = right.GetDefinition(); |
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| 108 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 109 | formationTime = 0.0; |
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| 110 | hasInitialStateParton = false; |
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| 111 | momentum = right.GetMomentum(); |
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| 112 | mass = right.GetDefinition()->GetPDGMass(); |
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| 113 | totalEnergy = right.GetTotalEnergy(); |
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| 114 | kineticEnergy = right.GetKineticEnergy(); |
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| 115 | (right.GetDefinition()->GetPDGEncoding()<0) ? timeOfFlight=-1.0 : timeOfFlight=1.0; |
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| 116 | side = 0; |
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| 117 | NewlyAdded = false; |
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| 118 | MayBeKilled = true; |
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| 119 | return *this; |
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| 120 | } |
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| 121 | |
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| 122 | G4ReactionProduct &G4ReactionProduct::operator=( |
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| 123 | const G4HadProjectile &right ) |
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| 124 | { |
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| 125 | theParticleDefinition = const_cast<G4ParticleDefinition *>(right.GetDefinition()); |
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| 126 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 127 | formationTime = 0.0; |
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| 128 | hasInitialStateParton = false; |
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| 129 | momentum = right.Get4Momentum().vect(); |
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| 130 | mass = right.GetDefinition()->GetPDGMass(); |
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| 131 | totalEnergy = right.Get4Momentum().e(); |
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| 132 | kineticEnergy = right.GetKineticEnergy(); |
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| 133 | (right.GetDefinition()->GetPDGEncoding()<0) ? timeOfFlight=-1.0 : timeOfFlight=1.0; |
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| 134 | side = 0; |
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| 135 | NewlyAdded = false; |
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| 136 | MayBeKilled = true; |
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| 137 | return *this; |
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| 138 | } |
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| 139 | |
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| 140 | void G4ReactionProduct::SetDefinitionAndUpdateE( |
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| 141 | G4ParticleDefinition *aParticleDefinition ) |
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| 142 | { |
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| 143 | G4double aKineticEnergy = GetKineticEnergy(); |
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| 144 | G4double pp = GetMomentum().mag(); |
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| 145 | G4ThreeVector aMomentum = GetMomentum(); |
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| 146 | SetDefinition( aParticleDefinition ); |
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| 147 | SetKineticEnergy( aKineticEnergy ); |
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| 148 | if( pp > DBL_MIN ) |
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| 149 | SetMomentum( aMomentum * (std::sqrt(aKineticEnergy*aKineticEnergy + |
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| 150 | 2*aKineticEnergy*GetMass())/pp) ); |
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| 151 | } |
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| 152 | |
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| 153 | void G4ReactionProduct::SetDefinition( |
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| 154 | G4ParticleDefinition *aParticleDefinition ) |
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| 155 | { |
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| 156 | theParticleDefinition = aParticleDefinition; |
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| 157 | mass = aParticleDefinition->GetPDGMass(); |
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| 158 | totalEnergy = mass; |
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| 159 | kineticEnergy = 0.0; |
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| 160 | (aParticleDefinition->GetPDGEncoding()<0) ? |
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| 161 | timeOfFlight=-1.0 : timeOfFlight=1.0; |
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| 162 | } |
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| 163 | |
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| 164 | void G4ReactionProduct::SetMomentum( |
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| 165 | const G4double x, const G4double y, const G4double z ) |
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| 166 | { |
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| 167 | momentum.setX( x ); |
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| 168 | momentum.setY( y ); |
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| 169 | momentum.setZ( z ); |
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| 170 | } |
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| 171 | |
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| 172 | void G4ReactionProduct::SetMomentum( |
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| 173 | const G4double x, const G4double y ) |
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| 174 | { |
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| 175 | momentum.setX( x ); |
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| 176 | momentum.setY( y ); |
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| 177 | } |
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| 178 | |
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| 179 | void G4ReactionProduct::SetMomentum( const G4double z ) |
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| 180 | { |
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| 181 | momentum.setZ( z ); |
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| 182 | } |
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| 183 | |
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| 184 | void G4ReactionProduct::SetZero() |
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| 185 | { |
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| 186 | SetMomentum( 0.0, 0.0, 0.0 ); |
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| 187 | totalEnergy = 0.0; |
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| 188 | kineticEnergy = 0.0; |
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| 189 | mass = 0.0; |
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| 190 | timeOfFlight = 0.0; |
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| 191 | side = 0; |
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| 192 | NewlyAdded = false; |
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| 193 | SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 194 | formationTime = 0.0; |
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| 195 | hasInitialStateParton = false; |
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| 196 | } |
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| 197 | |
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| 198 | void G4ReactionProduct::Lorentz( |
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| 199 | const G4ReactionProduct &p1, const G4ReactionProduct &p2 ) |
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| 200 | { |
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| 201 | G4ThreeVector p1M = p1.momentum; |
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| 202 | G4ThreeVector p2M = p2.momentum; |
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| 203 | G4double p1x = p1M.x(); G4double p1y = p1M.y(); G4double p1z = p1M.z(); |
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| 204 | G4double p2x = p2M.x(); G4double p2y = p2M.y(); G4double p2z = p2M.z(); |
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| 205 | G4double a = ( (p1x*p2x+p1y*p2y+p1z*p2z)/(p2.totalEnergy+p2.mass) - |
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| 206 | p1.totalEnergy ) / p2.mass; |
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| 207 | G4double x = p1x+a*p2x; |
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| 208 | G4double y = p1y+a*p2y; |
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| 209 | G4double z = p1z+a*p2z; |
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| 210 | G4double p = std::sqrt(x*x+y*y+z*z); |
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| 211 | SetMass( p1.mass ); |
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| 212 | SetTotalEnergy( std::sqrt( (p1.mass+p)*(p1.mass+p) - 2.*p1.mass*p ) ); |
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| 213 | //SetTotalEnergy( std::sqrt( p1.mass*p1.mass + x*x + y*y + z*z ) ); |
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| 214 | SetMomentum( x, y, z ); |
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| 215 | } |
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| 216 | |
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| 217 | G4double G4ReactionProduct::Angle( |
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| 218 | const G4ReactionProduct& p ) const |
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| 219 | { |
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| 220 | G4ThreeVector tM = momentum; |
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| 221 | G4ThreeVector pM = p.momentum; |
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| 222 | G4double tx = tM.x(); G4double ty = tM.y(); G4double tz = tM.z(); |
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| 223 | G4double px = pM.x(); G4double py = pM.y(); G4double pz = pM.z(); |
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| 224 | G4double a = std::sqrt( ( px*px + py*py + pz*pz ) * ( tx*tx + ty*ty + tz*tz ) ); |
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| 225 | if( a == 0.0 ) { |
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| 226 | return 0.0; |
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| 227 | } else { |
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| 228 | a = ( tx*px + ty*py + tz*pz ) / a; |
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| 229 | if( std::fabs(a) > 1.0 ) { a<0.0 ? a=-1.0 : a=1.0; } |
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| 230 | return std::acos( a ); |
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| 231 | } |
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| 232 | } |
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| 233 | |
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| 234 | G4ReactionProduct operator+( |
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| 235 | const G4ReactionProduct& p1, const G4ReactionProduct& p2 ) |
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| 236 | { |
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| 237 | G4double totEnergy = p1.totalEnergy + p2.totalEnergy; |
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| 238 | G4double x = p1.momentum.x() + p2.momentum.x(); |
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| 239 | G4double y = p1.momentum.y() + p2.momentum.y(); |
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| 240 | G4double z = p1.momentum.z() + p2.momentum.z(); |
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| 241 | G4double newMass = totEnergy*totEnergy - ( x*x + y*y + z*z ); |
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| 242 | if( newMass < 0.0 ) |
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| 243 | newMass = -1. * std::sqrt( -newMass ); |
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| 244 | else |
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| 245 | newMass = std::sqrt( newMass ); |
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| 246 | G4ReactionProduct result; |
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| 247 | result.SetMass( newMass ); |
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| 248 | result.SetMomentum( x, y, z ); |
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| 249 | result.SetTotalEnergy( totEnergy ); |
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| 250 | result.SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 251 | result.SetFormationTime(0.0); |
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| 252 | result.HasInitialStateParton(false); |
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| 253 | return result; |
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| 254 | } |
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| 255 | |
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| 256 | G4ReactionProduct operator-( |
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| 257 | const G4ReactionProduct& p1, const G4ReactionProduct& p2 ) |
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| 258 | { |
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| 259 | G4double totEnergy = p1.totalEnergy - p2.totalEnergy; |
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| 260 | G4double x = p1.momentum.x() - p2.momentum.x(); |
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| 261 | G4double y = p1.momentum.y() - p2.momentum.y(); |
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| 262 | G4double z = p1.momentum.z() - p2.momentum.z(); |
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| 263 | G4double newMass = totEnergy*totEnergy - ( x*x + y*y + z*z ); |
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| 264 | if( newMass < 0.0 ) |
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| 265 | newMass = -1. * std::sqrt( -newMass ); |
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| 266 | else |
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| 267 | newMass = std::sqrt( newMass ); |
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| 268 | G4ReactionProduct result; |
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| 269 | result.SetMass( newMass ); |
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| 270 | result.SetMomentum( x, y, z ); |
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| 271 | result.SetTotalEnergy( totEnergy ); |
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| 272 | result.SetPositionInNucleus( 0.0, 0.0, 0.0 ); |
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| 273 | result.SetFormationTime(0.0); |
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| 274 | result.HasInitialStateParton(false); |
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| 275 | return result; |
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| 276 | } |
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| 277 | /* end of code */ |
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| 278 | |
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