[819] | 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: G4ProjectileDiffractiveChannel.cc,v 1.2 2007/11/15 16:07:42 gunter Exp $ |
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[1340] | 28 | // GEANT4 tag $Name: geant4-09-03-ref-09 $ |
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[819] | 29 | // |
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| 30 | |
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| 31 | // Author : Gunter Folger Nov 2007 |
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| 32 | // Class Description |
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| 33 | // Final state production model for theoretical models of hadron inelastic |
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| 34 | // projectile diffractive scattering in geant4; |
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| 35 | // Class Description - End |
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| 36 | // |
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| 37 | // Modified: |
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| 38 | |
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| 39 | #include "G4ProjectileDiffractiveChannel.hh" |
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| 40 | |
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| 41 | #include "G4HadTmpUtil.hh" //lrint |
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| 42 | #include "G4QHadronVector.hh" |
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| 43 | #include "G4ParticleTable.hh" |
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| 44 | #include "G4IonTable.hh" |
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| 45 | #include "G4Lambda.hh" |
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| 46 | |
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| 47 | //#define debug_getFraction 1 |
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| 48 | //#define debug_scatter 1 |
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| 49 | |
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| 50 | G4ProjectileDiffractiveChannel::G4ProjectileDiffractiveChannel() |
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| 51 | { |
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| 52 | theQDiffraction=G4QDiffractionRatio::GetPointer(); |
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| 53 | } |
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| 54 | |
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| 55 | G4ProjectileDiffractiveChannel::~G4ProjectileDiffractiveChannel() |
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| 56 | {} |
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| 57 | |
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| 58 | G4double G4ProjectileDiffractiveChannel::GetFraction(G4Nucleus &theNucleus, |
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| 59 | const G4DynamicParticle & thePrimary) |
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| 60 | { |
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| 61 | G4double ratio; |
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| 62 | ratio=theQDiffraction->GetRatio(thePrimary.GetTotalMomentum(), |
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| 63 | thePrimary.GetDefinition()->GetPDGEncoding(), |
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| 64 | G4lrint(theNucleus.GetZ()), |
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| 65 | G4lrint(theNucleus.GetN()-theNucleus.GetZ())); |
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| 66 | #ifdef debug_getFraction |
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| 67 | G4cout << "G4ProjectileDiffractiveChannel::ratio " << ratio << G4endl; |
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| 68 | #endif |
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| 69 | |
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| 70 | return ratio; |
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| 71 | } |
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| 72 | |
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| 73 | G4KineticTrackVector * G4ProjectileDiffractiveChannel::Scatter(G4Nucleus &theNucleus, |
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| 74 | const G4DynamicParticle & thePrimary) |
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| 75 | { |
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| 76 | |
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| 77 | |
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| 78 | G4int A=G4lrint(theNucleus.GetN()); |
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| 79 | G4int Z=G4lrint(theNucleus.GetZ()); |
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| 80 | |
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| 81 | G4ParticleDefinition * pDef=thePrimary.GetDefinition(); |
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| 82 | #ifdef debug_scatter |
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| 83 | G4cout << " ProjectileDiffractive: A, Z, proj-pdg" <<" "<< A <<" "<<Z |
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| 84 | << " "<<" " << pDef->GetParticleName()<< G4endl; |
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| 85 | #endif |
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| 86 | |
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| 87 | G4QHadronVector * result(0); |
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| 88 | G4KineticTrackVector * ktv(0); |
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| 89 | G4bool tryAgain; |
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| 90 | |
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| 91 | do { |
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| 92 | tryAgain = false; |
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| 93 | result=theQDiffraction->ProjFragment(pDef->GetPDGEncoding(), |
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| 94 | thePrimary.Get4Momentum(),Z, A-Z); |
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| 95 | |
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| 96 | if ( result && result->size() > 0 ) |
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| 97 | { |
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| 98 | ktv=new G4KineticTrackVector(); |
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| 99 | std::vector<G4QHadron *>::iterator i; |
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| 100 | #ifdef debug_scatter |
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| 101 | G4int count(0); |
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| 102 | #endif |
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| 103 | for (i=result->begin(); i!=result->end(); i++) |
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| 104 | { |
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| 105 | G4int pdgCode=(*i)->GetPDGCode(); |
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| 106 | G4ParticleDefinition * secDef(0); |
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| 107 | if ( pdgCode < 80000000) { // check if ion; should be 90Million, but 89Million is possible |
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| 108 | secDef= G4ParticleTable::GetParticleTable()->FindParticle(pdgCode); |
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| 109 | }else { |
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| 110 | G4int N = pdgCode % 1000; |
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| 111 | G4int Z = (pdgCode/1000) %1000; |
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| 112 | if ( Z < 500 && N < 500){ // protect for delta being coded as/in nucleus |
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| 113 | secDef = G4ParticleTable::GetParticleTable()->GetIon(Z,N+Z, 0); |
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| 114 | if ( ! secDef ) |
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| 115 | { // exceptions to the rule! |
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| 116 | if ( pdgCode == 90000001 ) secDef= G4Neutron::Neutron(); |
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| 117 | if ( pdgCode == 91000000 ) secDef= G4Lambda::Lambda(); |
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| 118 | } |
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| 119 | } |
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| 120 | } |
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| 121 | |
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| 122 | if ( secDef ){ |
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| 123 | |
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| 124 | G4ThreeVector pos=(*i)->GetPosition(); //GetPosition returns const & |
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| 125 | G4LorentzVector mom=(*i)->Get4Momentum(); |
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| 126 | |
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| 127 | G4KineticTrack * sPrim=new G4KineticTrack(secDef, |
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| 128 | (*i)->GetFormationTime(), pos, mom); |
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| 129 | ktv->push_back(sPrim); |
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| 130 | |
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| 131 | #ifdef debug_scatter |
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| 132 | G4cout << "G4ProjectileDiffractive sec # " << ++count << ", " |
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| 133 | << "ChipsPDGCode=" << pdgCode << ", " |
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| 134 | << secDef->GetParticleName() |
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| 135 | << ", time(ns) " << (*i)->GetFormationTime()/ns |
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| 136 | << ", pos " << pos |
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| 137 | << ", 4mom " << (*i)->Get4Momentum() |
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| 138 | << G4endl; |
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| 139 | #endif |
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| 140 | } else { |
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| 141 | #ifdef debug_scatter |
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| 142 | G4cout << "G4ProjectileDiffractiveChannel: Particle with PDG code "<< pdgCode <<" does not converted!!!"<<G4endl; |
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| 143 | #endif |
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| 144 | tryAgain=true; |
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| 145 | } |
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| 146 | } |
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| 147 | std::for_each(result->begin(), result->end(), DeleteQHadron()); |
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| 148 | delete result; |
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| 149 | result=0; |
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| 150 | } |
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| 151 | |
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| 152 | if ( result ) delete result; |
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| 153 | if ( tryAgain ) { // QDiffraction returned a "difficult" particle in nucleus |
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| 154 | std::for_each(ktv->begin(), ktv->end(), DeleteKineticTrack()); |
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| 155 | delete ktv; |
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| 156 | ktv=0; |
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| 157 | } |
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| 158 | } while ( ! ktv); |
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| 159 | |
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| 160 | return ktv; |
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| 161 | } |
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