[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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[1340] | 26 | |
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| 27 | // Modified: |
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| 28 | // 24.08.10 A. Dotti (andrea.dotti@cern.ch) handle exceptions |
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| 29 | // thrown by Q4QEnvironment::Fragment retying interaction |
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| 30 | // 17.06.10 A. Dotti (andrea.dotti@cern.ch) handle case in which |
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| 31 | // Q4QEnvironment returns a 90000000 fragment (see code comments) |
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| 32 | |
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| 33 | // Created: |
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[819] | 34 | // 16.01.08 V.Ivanchenko use initialization similar to other CHIPS models |
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| 35 | // |
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| 36 | |
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| 37 | #include "G4ChiralInvariantPhaseSpace.hh" |
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| 38 | #include "G4ParticleTable.hh" |
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| 39 | #include "G4LorentzVector.hh" |
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| 40 | #include "G4DynamicParticle.hh" |
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| 41 | #include "G4IonTable.hh" |
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| 42 | #include "G4Neutron.hh" |
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[1340] | 43 | #include "G4Gamma.hh" |
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[819] | 44 | |
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| 45 | G4ChiralInvariantPhaseSpace::G4ChiralInvariantPhaseSpace() |
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| 46 | {} |
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| 47 | |
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| 48 | G4ChiralInvariantPhaseSpace::~G4ChiralInvariantPhaseSpace() |
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| 49 | {} |
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| 50 | |
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| 51 | G4HadFinalState * G4ChiralInvariantPhaseSpace::ApplyYourself( |
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| 52 | const G4HadProjectile& aTrack, |
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| 53 | G4Nucleus& aTargetNucleus, |
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| 54 | G4HadFinalState * aChange) |
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| 55 | { |
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| 56 | G4HadFinalState * aResult; |
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| 57 | if(aChange != 0) |
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| 58 | { |
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| 59 | aResult = aChange; |
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| 60 | } |
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| 61 | else |
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| 62 | { |
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| 63 | aResult = & theResult; |
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| 64 | aResult->Clear(); |
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| 65 | aResult->SetStatusChange(stopAndKill); |
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| 66 | } |
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| 67 | //projectile properties needed in constructor of quasmon |
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| 68 | G4LorentzVector proj4Mom; |
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| 69 | proj4Mom = aTrack.Get4Momentum(); |
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| 70 | G4int projectilePDGCode = aTrack.GetDefinition() |
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| 71 | ->GetPDGEncoding(); |
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| 72 | |
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| 73 | //target properties needed in constructor of quasmon |
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[1347] | 74 | G4int targetZ = aTargetNucleus.GetZ_asInt(); |
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| 75 | G4int targetA = aTargetNucleus.GetA_asInt(); |
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[819] | 76 | G4int targetPDGCode = 90000000 + 1000*targetZ + (targetA-targetZ); |
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| 77 | // NOT NECESSARY ______________ |
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| 78 | G4double targetMass = G4ParticleTable::GetParticleTable()->GetIonTable() |
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| 79 | ->GetIonMass(targetZ, targetA); |
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| 80 | G4LorentzVector targ4Mom(0.,0.,0.,targetMass); |
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| 81 | // END OF NOT NECESSARY^^^^^^^^ |
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| 82 | |
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| 83 | // V.Ivanchenko set the same value as for other CHIPS models |
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| 84 | G4int nop = 152; |
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| 85 | //G4int nop = 164; // nuclear clusters up to A=21 |
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| 86 | G4double fractionOfSingleQuasiFreeNucleons = 0.4; |
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| 87 | G4double fractionOfPairedQuasiFreeNucleons = 0.0; |
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| 88 | if(targetA>27) fractionOfPairedQuasiFreeNucleons = 0.04; |
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| 89 | G4double clusteringCoefficient = 4.; |
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| 90 | G4double temperature = 180.; |
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| 91 | G4double halfTheStrangenessOfSee = 0.1; // = s/d = s/u |
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| 92 | G4double etaToEtaPrime = 0.3; |
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| 93 | |
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| 94 | // construct and fragment the quasmon |
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| 95 | //G4QCHIPSWorld aWorld(nop); // Create CHIPS World of nop particles |
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| 96 | G4QCHIPSWorld::Get()->GetParticles(nop); // Create CHIPS World of nop particles |
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| 97 | G4QNucleus::SetParameters(fractionOfSingleQuasiFreeNucleons, |
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| 98 | fractionOfPairedQuasiFreeNucleons, |
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| 99 | clusteringCoefficient); |
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| 100 | G4Quasmon::SetParameters(temperature, |
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| 101 | halfTheStrangenessOfSee, |
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| 102 | etaToEtaPrime); |
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| 103 | // G4QEnvironment::SetParameters(solidAngle); |
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[1340] | 104 | // G4cout << "Input info "<< projectilePDGCode << " " |
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| 105 | // << targetPDGCode <<" " |
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| 106 | // << 1./MeV*proj4Mom<<" " |
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| 107 | // << 1./MeV*targ4Mom << " " |
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| 108 | // << nop << G4endl; |
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[819] | 109 | G4QHadronVector projHV; |
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| 110 | G4QHadron* iH = new G4QHadron(projectilePDGCode, 1./MeV*proj4Mom); |
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| 111 | projHV.push_back(iH); |
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[1340] | 112 | |
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| 113 | //AND |
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| 114 | //A. Dotti 24 Aug. : Trying to handle situation when G4QEnvironment::Fragment throws an exception |
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| 115 | // Seen by ATLAS for gamma+Nuclear interaction for Gamma@2.4GeV on Al |
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| 116 | // The poor-man solution here is to re-try interaction if a G4QException is catched |
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| 117 | // Warning: G4QExcpetion does NOT inherit from base class G4HadException |
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[819] | 118 | G4QHadronVector* output=0; |
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[1340] | 119 | |
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| 120 | bool retry=true; |
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| 121 | int retryes=0; |
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| 122 | int maxretries=10; |
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| 123 | |
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| 124 | while ( retry && retryes < maxretries ) |
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[819] | 125 | { |
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[1340] | 126 | G4QEnvironment* pan= new G4QEnvironment(projHV, targetPDGCode); |
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| 127 | |
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| 128 | try |
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| 129 | { |
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| 130 | ++retryes; |
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| 131 | output = pan->Fragment(); |
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| 132 | retry=false;//If here, Fragment did not throw! (AND) |
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| 133 | } |
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| 134 | catch( ... ) |
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| 135 | { |
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| 136 | G4cerr << "***WARNING*** Exception thrown passing through G4ChiralInvariantPhaseSpace "<<G4endl; |
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| 137 | G4cerr << " targetPDGCode = "<< targetPDGCode <<G4endl; |
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| 138 | G4cerr << " Dumping the information in the pojectile list"<<G4endl; |
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| 139 | for(size_t i=0; i< projHV.size(); i++) |
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| 140 | { |
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| 141 | G4cerr <<" Incoming 4-momentum and PDG code of "<<i<<"'th hadron: " |
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| 142 | <<" "<< projHV[i]->Get4Momentum()<<" "<<projHV[i]->GetPDGCode()<<G4endl; |
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| 143 | } |
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| 144 | G4cerr << "Retrying interaction "<<G4endl; //AND |
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| 145 | //throw; //AND |
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| 146 | } |
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| 147 | delete pan; |
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| 148 | } //AND |
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| 149 | if ( retryes >= maxretries ) //AND |
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| 150 | { |
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| 151 | G4cerr << "***ERROR*** Maximum number of retries ("<<maxretries<<") reached for G4QEnvironment::Fragment(), exception is being thrown" << G4endl; |
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| 152 | throw G4HadronicException(__FILE__,__LINE__,"G4ChiralInvariantPhaseSpace::ApplyYourself(...) - Maximum number of re-tries reached, abandon interaction"); |
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[819] | 153 | } |
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| 154 | |
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| 155 | // Fill the particle change. |
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| 156 | G4DynamicParticle * theSec; |
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| 157 | #ifdef CHIPSdebug |
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| 158 | G4cout << "G4ChiralInvariantPhaseSpace: NEW EVENT #ofHadrons=" |
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| 159 | <<output->size()<<G4endl; |
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| 160 | #endif |
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[1340] | 161 | |
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| 162 | |
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[819] | 163 | unsigned int particle; |
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| 164 | for( particle = 0; particle < output->size(); particle++) |
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| 165 | { |
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| 166 | if(output->operator[](particle)->GetNFragments() != 0) |
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| 167 | { |
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| 168 | delete output->operator[](particle); |
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| 169 | continue; |
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| 170 | } |
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| 171 | theSec = new G4DynamicParticle; |
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| 172 | G4int pdgCode = output->operator[](particle)->GetPDGCode(); |
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| 173 | #ifdef CHIPSdebug |
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| 174 | G4cout << "G4ChiralInvariantPhaseSpace: h#"<<particle |
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| 175 | <<", PDG="<<pdgCode<<G4endl; |
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| 176 | #endif |
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| 177 | G4ParticleDefinition * theDefinition; |
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| 178 | // Note that I still have to take care of strange nuclei |
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| 179 | // For this I need the mass calculation, and a changed interface |
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| 180 | // for ion-tablel ==> work for Hisaya @@@@@@@ |
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| 181 | // Then I can sort out the pdgCode. I also need a decau process |
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| 182 | // for strange nuclei; may be another chips interface |
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| 183 | if(pdgCode>90000000) |
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| 184 | { |
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| 185 | G4int aZ = (pdgCode-90000000)/1000; |
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| 186 | G4int anN = pdgCode-90000000-1000*aZ; |
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| 187 | theDefinition = G4ParticleTable::GetParticleTable()->FindIon(aZ,anN+aZ,0,aZ); |
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| 188 | if(aZ == 0 && anN == 1) theDefinition = G4Neutron::Neutron(); |
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| 189 | } |
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[1340] | 190 | //AND |
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| 191 | else if ( pdgCode == 90000000 && output->operator[](particle)->Get4Momentum().m()<1*MeV ) |
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| 192 | { |
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| 193 | //A. Dotti: |
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| 194 | //We cure the case the model returns a (A,Z)=0,0 G4QHadron with a very small mass |
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| 195 | //We convert this to a gamma. According to the author of the model this is the |
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| 196 | //correct thing to do and it is done also in other parts of the CHIPS package |
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| 197 | theDefinition = G4Gamma::Gamma(); |
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| 198 | } |
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| 199 | //AND |
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[819] | 200 | else |
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| 201 | { |
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| 202 | theDefinition = G4ParticleTable::GetParticleTable() |
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| 203 | ->FindParticle(output->operator[](particle)->GetPDGCode()); |
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| 204 | } |
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[1340] | 205 | |
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| 206 | //AND |
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| 207 | //A. Dotti: Handle problematic cases in which one of the products has not been recognized |
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| 208 | // This should never happen but we want to add an extra-protection |
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| 209 | if ( theDefinition == NULL ) |
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| 210 | { |
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| 211 | //If we arrived here something bad really happened. We do not know how to handle the products of the interaction, we give up, resetting the |
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| 212 | //result and keeping the primary alive. |
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| 213 | G4cerr<<"**WARNING*** G4ChiralInvariantPhaseSpace::ApplyYourself(...) : G4QEnvironment::Fragment() returns an invalid fragment\n with fourMom(MeV)="; |
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| 214 | G4cerr<<output->operator[](particle)->Get4Momentum()<<" and mass(MeV)="<<output->operator[](particle)->Get4Momentum().m(); |
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| 215 | G4cerr<<". Offending PDG is:"<<pdgCode<<" abandon interaction. \n Taget PDG was:"<<targetPDGCode<<" \n Dumping the information in the projectile list:\n"; |
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| 216 | for(size_t i=0; i< projHV.size(); i++) |
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| 217 | { |
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| 218 | G4cerr <<" Incoming 4-momentum and PDG code of "<<i<<"'th hadron: " |
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| 219 | <<" "<< projHV[i]->Get4Momentum()<<" "<<projHV[i]->GetPDGCode()<<"\n"; |
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| 220 | } |
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| 221 | G4cerr<<"\n Please report as bug \n***END OF MESSAGE***"<<G4endl; |
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| 222 | |
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| 223 | for ( unsigned int cparticle=0 ; cparticle<output->size();++cparticle) |
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| 224 | delete output->operator[](cparticle); |
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| 225 | delete output; |
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| 226 | std::for_each(projHV.begin(), projHV.end(), DeleteQHadron()); |
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| 227 | projHV.clear(); |
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| 228 | |
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| 229 | aResult->Clear(); |
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| 230 | aResult->SetStatusChange(isAlive); |
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| 231 | aResult->SetEnergyChange(aTrack.GetKineticEnergy()); |
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| 232 | aResult->SetMomentumChange(aTrack.Get4Momentum().vect().unit()); |
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| 233 | return aResult; |
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| 234 | } |
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| 235 | //AND |
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| 236 | |
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| 237 | |
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[819] | 238 | theSec->SetDefinition(theDefinition); |
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| 239 | theSec->SetMomentum(output->operator[](particle)->Get4Momentum().vect()); |
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| 240 | aResult->AddSecondary(theSec); |
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| 241 | delete output->operator[](particle); |
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| 242 | } |
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| 243 | delete output; |
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[1340] | 244 | std::for_each(projHV.begin(), projHV.end(), DeleteQHadron()); |
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| 245 | projHV.clear(); |
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[819] | 246 | return aResult; |
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| 247 | } |
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| 248 | |
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