[966] | 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 | #include "G4AdjointBremsstrahlungModel.hh" |
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| 27 | #include "G4AdjointCSManager.hh" |
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| 28 | #include "G4Integrator.hh" |
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| 29 | #include "G4TrackStatus.hh" |
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| 30 | #include "G4ParticleChange.hh" |
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| 31 | #include "G4AdjointElectron.hh" |
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| 32 | #include "G4Timer.hh" |
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| 33 | |
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| 34 | //////////////////////////////////////////////////////////////////////////////// |
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| 35 | // |
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| 36 | G4AdjointBremsstrahlungModel::G4AdjointBremsstrahlungModel(): |
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| 37 | G4VEmAdjointModel("AdjointBremModel"), |
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| 38 | probsup(1.0), |
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| 39 | MigdalConstant(classic_electr_radius*electron_Compton_length*electron_Compton_length/pi), |
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| 40 | LPMconstant(fine_structure_const*electron_mass_c2*electron_mass_c2/(4.*pi*hbarc)), |
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| 41 | theLPMflag(true) |
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| 42 | |
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| 43 | { isElectron= true; |
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| 44 | SetUseMatrix(true); |
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| 45 | SetUseMatrixPerElement(false); |
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| 46 | SetApplyCutInRange(true); |
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| 47 | SetIsIonisation(false); |
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| 48 | highKinEnergy= 100.*TeV; |
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| 49 | lowKinEnergy = 1.0*keV; |
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| 50 | theTimer =new G4Timer(); |
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| 51 | |
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| 52 | theTimer->Start(); |
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| 53 | InitialiseParameters(); |
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| 54 | theTimer->Stop(); |
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| 55 | G4cout<<"Time elapsed in second for the initialidation of AdjointBrem "<<theTimer->GetRealElapsed()<<std::endl; |
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| 56 | |
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| 57 | ModeldCS="MODEL1"; |
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| 58 | |
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| 59 | } |
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| 60 | //////////////////////////////////////////////////////////////////////////////// |
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| 61 | // |
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| 62 | G4AdjointBremsstrahlungModel::~G4AdjointBremsstrahlungModel() |
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| 63 | {;} |
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| 64 | //////////////////////////////////////////////////////////////////////////////// |
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| 65 | // |
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| 66 | /*G4double G4AdjointBremsstrahlungModel::DiffCrossSectionPerVolumePrimToSecond( |
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| 67 | const G4Material* aMaterial, |
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| 68 | G4double kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 69 | G4double kinEnergyProd // kinetic energy of the secondary particle |
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| 70 | ) |
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| 71 | { |
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| 72 | |
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| 73 | static const G4double |
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| 74 | ah10 = 4.67733E+00, ah11 =-6.19012E-01, ah12 = 2.02225E-02, |
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| 75 | ah20 =-7.34101E+00, ah21 = 1.00462E+00, ah22 =-3.20985E-02, |
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| 76 | ah30 = 2.93119E+00, ah31 =-4.03761E-01, ah32 = 1.25153E-02; |
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| 77 | |
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| 78 | static const G4double |
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| 79 | bh10 = 4.23071E+00, bh11 =-6.10995E-01, bh12 = 1.95531E-02, |
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| 80 | bh20 =-7.12527E+00, bh21 = 9.69160E-01, bh22 =-2.74255E-02, |
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| 81 | bh30 = 2.69925E+00, bh31 =-3.63283E-01, bh32 = 9.55316E-03; |
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| 82 | |
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| 83 | static const G4double |
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| 84 | al00 =-2.05398E+00, al01 = 2.38815E-02, al02 = 5.25483E-04, |
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| 85 | al10 =-7.69748E-02, al11 =-6.91499E-02, al12 = 2.22453E-03, |
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| 86 | al20 = 4.06463E-02, al21 =-1.01281E-02, al22 = 3.40919E-04; |
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| 87 | |
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| 88 | static const G4double |
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| 89 | bl00 = 1.04133E+00, bl01 =-9.43291E-03, bl02 =-4.54758E-04, |
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| 90 | bl10 = 1.19253E-01, bl11 = 4.07467E-02, bl12 =-1.30718E-03, |
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| 91 | bl20 =-1.59391E-02, bl21 = 7.27752E-03, bl22 =-1.94405E-04; |
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| 92 | |
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| 93 | static const G4double tlow = 1.*MeV; |
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| 94 | |
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| 95 | G4double dCrossEprod=0.; |
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| 96 | G4double Emax_proj = GetSecondAdjEnergyMaxForProdToProjCase(kinEnergyProd); |
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| 97 | G4double Emin_proj = GetSecondAdjEnergyMinForProdToProjCase(kinEnergyProd); |
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| 98 | |
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| 99 | |
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| 100 | if (kinEnergyProj>Emin_proj && kinEnergyProj<=Emax_proj){ |
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| 101 | |
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| 102 | G4double cross = 0.0; |
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| 103 | |
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| 104 | |
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| 105 | |
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| 106 | G4double E1=kinEnergyProd; |
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| 107 | G4double E2=kinEnergyProd*1.000000001; |
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| 108 | G4double dE=(E2-E1); |
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| 109 | |
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| 110 | const G4ElementVector* theElementVector = aMaterial->GetElementVector(); |
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| 111 | const G4double* theAtomNumDensityVector = aMaterial->GetAtomicNumDensityVector(); |
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| 112 | G4double dum=0.; |
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| 113 | |
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| 114 | for (size_t i=0; i<aMaterial->GetNumberOfElements(); i++) { |
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| 115 | |
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| 116 | G4double fac= |
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| 117 | |
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| 118 | cross += theAtomNumDensityVector[i] * theDirectEMModel->ComputeCrossSectionPerAtom(G4Electron::Electron(), |
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| 119 | kinEnergyProj, (*theElementVector)[i]->GetZ(), dum,E1); |
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| 120 | |
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| 121 | |
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| 122 | |
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| 123 | } |
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| 124 | dCrossEprod=(cross1-cross2)/dE; //first term |
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| 125 | |
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| 126 | //Now come the correction |
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| 127 | //----------------------- |
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| 128 | |
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| 129 | //First compute fsig for E1 |
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| 130 | //------------------------- |
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| 131 | |
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| 132 | |
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| 133 | G4double totalEnergy = kinEnergyProj+electron_mass_c2 ; |
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| 134 | G4double kp2 = MigdalConstant*totalEnergy*totalEnergy |
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| 135 | *(aMaterial->GetElectronDensity()); |
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| 136 | |
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| 137 | G4double fsig = 0.; |
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| 138 | G4int nmax = 100; |
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| 139 | G4double vmin=std::log(E1); |
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| 140 | G4double vmax=std::log(kinEnergyProj) ; |
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| 141 | G4int nn = (G4int)(nmax*(vmax-vmin)/(std::log(highKinEnergy)-vmin)); |
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| 142 | G4double u,fac,c,v,dv,y ; |
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| 143 | if(nn > 0) { |
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| 144 | |
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| 145 | dv = (vmax-vmin)/nn ; |
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| 146 | v = vmin-dv ; |
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| 147 | for(G4int n=0; n<=nn; n++) { |
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| 148 | |
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| 149 | v += dv; |
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| 150 | u = std::exp(v); |
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| 151 | fac = SupressionFunction(aMaterial, kinEnergyProj, u); |
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| 152 | y = u/kinEnergyProj; |
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| 153 | fac *= (4.-4.*y+3.*y*y)/3.; |
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| 154 | fac *= probsup*(u*u/(u*u+kp2))+1.-probsup; |
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| 155 | |
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| 156 | if ((n==0)||(n==nn)) c=0.5; |
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| 157 | else c=1. ; |
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| 158 | |
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| 159 | fac *= c; |
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| 160 | fsig += fac; |
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| 161 | } |
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| 162 | y = E1/kinEnergyProj ; |
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| 163 | fsig *=dv/(-4.*std::log(y)/3.-4.*(1.-y)/3.+0.5*(1.-y*y)); |
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| 164 | |
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| 165 | } |
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| 166 | else { |
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| 167 | fsig = 1.; |
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| 168 | } |
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| 169 | if (fsig > 1.) fsig = 1.; |
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| 170 | |
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| 171 | dCrossEprod*=fsig; |
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| 172 | //return dCrossEprod; |
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| 173 | //Now we compute dfsig |
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| 174 | //------------------------- |
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| 175 | G4double dfsig = 0.; |
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| 176 | nn=20; |
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| 177 | vmax=std::log(E2) ; |
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| 178 | dv = (vmax-vmin)/nn ; |
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| 179 | v = vmin-dv ; |
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| 180 | for(G4int n=0; n<=nn; n++) { |
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| 181 | v += dv; |
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| 182 | u = std::exp(v); |
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| 183 | fac = SupressionFunction(aMaterial, kinEnergyProj, u); |
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| 184 | y = u/kinEnergyProj; |
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| 185 | fac *= (4.-4.*y+3.*y*y)/3.; |
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| 186 | fac *= probsup*(u*u/(u*u+kp2))+1.-probsup; |
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| 187 | |
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| 188 | if ((n==0)||(n==nn)) c=0.5; |
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| 189 | else c=1. ; |
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| 190 | |
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| 191 | fac *= c; |
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| 192 | dfsig += fac; |
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| 193 | } |
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| 194 | y = E1/kinEnergyProj; |
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| 195 | dfsig *=dv/(-4.*std::log(y)/3.-4.*(1.-y)/3.+0.5*(1.-y*y)); |
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| 196 | |
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| 197 | dCrossEprod+=dfsig*cross1/dE; |
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| 198 | |
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| 199 | |
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| 200 | |
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| 201 | |
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| 202 | |
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| 203 | } |
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| 204 | return dCrossEprod; |
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| 205 | |
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| 206 | } |
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| 207 | */ |
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| 208 | G4double G4AdjointBremsstrahlungModel::DiffCrossSectionPerVolumePrimToSecond(const G4Material* aMaterial, |
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| 209 | G4double kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 210 | G4double kinEnergyProd // kinetic energy of the secondary particle |
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| 211 | ) |
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| 212 | {if (ModeldCS=="MODEL2") return DiffCrossSectionPerVolumePrimToSecond2(aMaterial, |
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| 213 | kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 214 | kinEnergyProd); |
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| 215 | if (ModeldCS=="MODEL3") return DiffCrossSectionPerVolumePrimToSecond3(aMaterial, |
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| 216 | kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 217 | kinEnergyProd); |
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| 218 | return DiffCrossSectionPerVolumePrimToSecond1(aMaterial, |
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| 219 | kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 220 | kinEnergyProd); |
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| 221 | } |
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| 222 | //////////////////////////////////////////////////////////////////////////////// |
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| 223 | // the one used till now |
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| 224 | G4double G4AdjointBremsstrahlungModel::DiffCrossSectionPerVolumePrimToSecond1( |
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| 225 | const G4Material* aMaterial, |
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| 226 | G4double kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 227 | G4double kinEnergyProd // kinetic energy of the secondary particle |
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| 228 | ) |
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| 229 | { |
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| 230 | G4double dCrossEprod=0.; |
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| 231 | G4double Emax_proj = GetSecondAdjEnergyMaxForProdToProjCase(kinEnergyProd); |
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| 232 | G4double Emin_proj = GetSecondAdjEnergyMinForProdToProjCase(kinEnergyProd); |
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| 233 | |
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| 234 | |
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| 235 | if (kinEnergyProj>Emin_proj && kinEnergyProj<=Emax_proj){ |
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| 236 | |
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| 237 | G4double cross1 = 0.0; |
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| 238 | G4double cross2 = 0.0; |
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| 239 | |
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| 240 | |
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| 241 | G4double E1=kinEnergyProd; |
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| 242 | G4double E2=kinEnergyProd*1.01; |
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| 243 | G4double dE=(E2-E1); |
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| 244 | |
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| 245 | const G4ElementVector* theElementVector = aMaterial->GetElementVector(); |
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| 246 | const G4double* theAtomNumDensityVector = aMaterial->GetAtomicNumDensityVector(); |
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| 247 | G4double dum=0.; |
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| 248 | |
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| 249 | for (size_t i=0; i<aMaterial->GetNumberOfElements(); i++) { |
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| 250 | |
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| 251 | cross1 += theAtomNumDensityVector[i] * theDirectEMModel->ComputeCrossSectionPerAtom(G4Electron::Electron(), |
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| 252 | kinEnergyProj, (*theElementVector)[i]->GetZ(), dum,E1); |
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| 253 | |
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| 254 | cross2 += theAtomNumDensityVector[i] * theDirectEMModel->ComputeCrossSectionPerAtom(G4Electron::Electron(), |
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| 255 | kinEnergyProj, (*theElementVector)[i]->GetZ(), dum, E2); |
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| 256 | |
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| 257 | } |
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| 258 | dCrossEprod=(cross1-cross2)/dE; //first term |
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| 259 | |
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| 260 | //Now come the correction |
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| 261 | //----------------------- |
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| 262 | |
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| 263 | //First compute fsig for E1 |
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| 264 | //------------------------- |
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| 265 | |
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| 266 | |
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| 267 | G4double totalEnergy = kinEnergyProj+electron_mass_c2 ; |
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| 268 | G4double kp2 = MigdalConstant*totalEnergy*totalEnergy |
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| 269 | *(aMaterial->GetElectronDensity()); |
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| 270 | |
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| 271 | G4double fsig1 = 0.; |
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| 272 | G4int nmax = 100; |
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| 273 | G4double vmin=std::log(E1); |
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| 274 | G4double vmax=std::log(kinEnergyProj) ; |
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| 275 | G4int nn = (G4int)(nmax*(vmax-vmin)/(std::log(highKinEnergy)-vmin)); |
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| 276 | G4double u,fac,c,v,dv,y ; |
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| 277 | if(nn > 0) { |
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| 278 | |
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| 279 | dv = (vmax-vmin)/nn ; |
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| 280 | v = vmin-dv ; |
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| 281 | for(G4int n=0; n<=nn; n++) { |
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| 282 | |
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| 283 | v += dv; |
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| 284 | u = std::exp(v); |
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| 285 | fac = SupressionFunction(aMaterial, kinEnergyProj, u); |
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| 286 | y = u/kinEnergyProj; |
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| 287 | fac *= (4.-4.*y+3.*y*y)/3.; |
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| 288 | fac *= probsup*(u*u/(u*u+kp2))+1.-probsup; |
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| 289 | |
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| 290 | if ((n==0)||(n==nn)) c=0.5; |
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| 291 | else c=1. ; |
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| 292 | |
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| 293 | fac *= c; |
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| 294 | fsig1 += fac; |
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| 295 | } |
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| 296 | y = E1/kinEnergyProj ; |
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| 297 | fsig1 *=dv/(-4.*std::log(y)/3.-4.*(1.-y)/3.+0.5*(1.-y*y)); |
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| 298 | |
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| 299 | } |
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| 300 | else { |
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| 301 | fsig1 = 1.; |
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| 302 | } |
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| 303 | if (fsig1 > 1.) fsig1 = 1.; |
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| 304 | |
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| 305 | dCrossEprod*=fsig1; |
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| 306 | |
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| 307 | |
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| 308 | G4double fsig2 = 0.; |
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| 309 | vmin=std::log(E2); |
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| 310 | nn = (G4int)(nmax*(vmax-vmin)/(std::log(highKinEnergy)-vmin)); |
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| 311 | if(nn > 0) { |
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| 312 | |
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| 313 | dv = (vmax-vmin)/nn ; |
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| 314 | v = vmin-dv ; |
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| 315 | for(G4int n=0; n<=nn; n++) { |
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| 316 | |
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| 317 | v += dv; |
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| 318 | u = std::exp(v); |
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| 319 | fac = SupressionFunction(aMaterial, kinEnergyProj, u); |
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| 320 | y = u/kinEnergyProj; |
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| 321 | fac *= (4.-4.*y+3.*y*y)/3.; |
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| 322 | fac *= probsup*(u*u/(u*u+kp2))+1.-probsup; |
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| 323 | |
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| 324 | if ((n==0)||(n==nn)) c=0.5; |
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| 325 | else c=1. ; |
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| 326 | |
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| 327 | fac *= c; |
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| 328 | fsig2 += fac; |
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| 329 | } |
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| 330 | y = E2/kinEnergyProj ; |
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| 331 | fsig2 *=dv/(-4.*std::log(y)/3.-4.*(1.-y)/3.+0.5*(1.-y*y)); |
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| 332 | |
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| 333 | } |
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| 334 | else { |
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| 335 | fsig2 = 1.; |
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| 336 | } |
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| 337 | if (fsig2 > 1.) fsig2 = 1.; |
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| 338 | |
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| 339 | |
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| 340 | G4double dfsig=(fsig2-fsig1); |
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| 341 | dCrossEprod+=dfsig*cross1/dE; |
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| 342 | |
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| 343 | dCrossEprod=(fsig1*cross1-fsig2*cross2)/dE; |
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| 344 | |
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| 345 | |
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| 346 | |
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| 347 | |
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| 348 | |
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| 349 | /*if (fsig < 1.){ |
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| 350 | //Now we compute dfsig |
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| 351 | //------------------------- |
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| 352 | G4double dfsig = 0.; |
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| 353 | nn=20; |
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| 354 | vmax=std::log(E2) ; |
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| 355 | dv = (vmax-vmin)/nn ; |
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| 356 | v = vmin-dv ; |
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| 357 | for(G4int n=0; n<=nn; n++) { |
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| 358 | v += dv; |
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| 359 | u = std::exp(v); |
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| 360 | fac = SupressionFunction(aMaterial, kinEnergyProj, u); |
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| 361 | y = u/kinEnergyProj; |
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| 362 | fac *= (4.-4.*y+3.*y*y)/3.; |
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| 363 | fac *= probsup*(u*u/(u*u+kp2))+1.-probsup; |
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| 364 | |
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| 365 | if ((n==0)||(n==nn)) c=0.5; |
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| 366 | else c=1. ; |
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| 367 | |
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| 368 | fac *= c; |
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| 369 | dfsig += fac; |
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| 370 | } |
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| 371 | y = E1/kinEnergyProj; |
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| 372 | dfsig *=dv/(-4.*std::log(y)/3.-4.*(1.-y)/3.+0.5*(1.-y*y)); |
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| 373 | dCrossEprod+=dfsig*cross1/dE; |
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| 374 | |
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| 375 | } |
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| 376 | */ |
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| 377 | |
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| 378 | |
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| 379 | |
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| 380 | |
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| 381 | |
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| 382 | |
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| 383 | |
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| 384 | } |
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| 385 | return dCrossEprod; |
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| 386 | |
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| 387 | } |
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| 388 | |
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| 389 | |
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| 390 | //////////////////////////////////////////////////////////////////////////////// |
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| 391 | // |
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| 392 | G4double G4AdjointBremsstrahlungModel::DiffCrossSectionPerVolumePrimToSecond2( |
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| 393 | const G4Material* aMaterial, |
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| 394 | G4double kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 395 | G4double kinEnergyProd // kinetic energy of the secondary particle |
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| 396 | ) |
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| 397 | { |
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| 398 | G4double dCrossEprod=0.; |
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| 399 | G4double Emax_proj = GetSecondAdjEnergyMaxForProdToProjCase(kinEnergyProd); |
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| 400 | G4double Emin_proj = GetSecondAdjEnergyMinForProdToProjCase(kinEnergyProd); |
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| 401 | |
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| 402 | |
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| 403 | if (kinEnergyProj>Emin_proj && kinEnergyProj<=Emax_proj){ |
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| 404 | |
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| 405 | G4double dEdX1 = 0.0; |
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| 406 | G4double dEdX2 = 0.0; |
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| 407 | |
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| 408 | |
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| 409 | G4double E1=kinEnergyProd; |
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| 410 | G4double E2=kinEnergyProd*1.001; |
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| 411 | G4double dE=(E2-E1); |
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| 412 | //G4double dum=0.; |
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| 413 | |
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| 414 | dEdX1 = theDirectEMModel->ComputeDEDXPerVolume(aMaterial,G4Electron::Electron(),kinEnergyProj,E1); |
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| 415 | dEdX2 = theDirectEMModel->ComputeDEDXPerVolume(aMaterial,G4Electron::Electron(),kinEnergyProj,E2); |
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| 416 | dCrossEprod=(dEdX2-dEdX1)/dE/E1; |
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| 417 | |
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| 418 | |
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| 419 | |
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| 420 | |
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| 421 | |
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| 422 | |
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| 423 | |
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| 424 | } |
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| 425 | return dCrossEprod; |
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| 426 | |
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| 427 | } |
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| 428 | //////////////////////////////////////////////////////////////////////////////// |
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| 429 | // |
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| 430 | G4double G4AdjointBremsstrahlungModel::DiffCrossSectionPerVolumePrimToSecond3( |
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| 431 | const G4Material* aMaterial, |
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| 432 | G4double kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 433 | G4double kinEnergyProd // kinetic energy of the secondary particle |
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| 434 | ) |
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| 435 | { |
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| 436 | |
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| 437 | return G4VEmAdjointModel::DiffCrossSectionPerVolumePrimToSecond(aMaterial, |
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| 438 | kinEnergyProj, // kinetic energy of the primary particle before the interaction |
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| 439 | kinEnergyProd); |
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| 440 | |
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| 441 | } |
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| 442 | |
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| 443 | //////////////////////////////////////////////////////////////////////////////// |
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| 444 | // |
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| 445 | G4double G4AdjointBremsstrahlungModel::SupressionFunction(const G4Material* material, |
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| 446 | G4double kineticEnergy, G4double gammaEnergy) |
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| 447 | { |
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| 448 | // supression due to the LPM effect+polarisation of the medium/ |
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| 449 | // supression due to the polarisation alone |
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| 450 | |
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| 451 | |
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| 452 | G4double totEnergy = kineticEnergy+electron_mass_c2 ; |
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| 453 | G4double totEnergySquare = totEnergy*totEnergy ; |
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| 454 | |
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| 455 | G4double LPMEnergy = LPMconstant*(material->GetRadlen()) ; |
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| 456 | |
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| 457 | G4double gammaEnergySquare = gammaEnergy*gammaEnergy ; |
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| 458 | |
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| 459 | G4double electronDensity = material->GetElectronDensity(); |
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| 460 | |
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| 461 | G4double sp = gammaEnergySquare/ |
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| 462 | (gammaEnergySquare+MigdalConstant*totEnergySquare*electronDensity); |
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| 463 | |
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| 464 | G4double supr = 1.0; |
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| 465 | |
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| 466 | if (theLPMflag) { |
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| 467 | |
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| 468 | G4double s2lpm = LPMEnergy*gammaEnergy/totEnergySquare; |
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| 469 | |
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| 470 | if (s2lpm < 1.) { |
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| 471 | |
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| 472 | G4double LPMgEnergyLimit = totEnergySquare/LPMEnergy ; |
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| 473 | G4double LPMgEnergyLimit2 = LPMgEnergyLimit*LPMgEnergyLimit; |
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| 474 | G4double splim = LPMgEnergyLimit2/ |
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| 475 | (LPMgEnergyLimit2+MigdalConstant*totEnergySquare*electronDensity); |
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| 476 | G4double w = 1.+1./splim ; |
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| 477 | |
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| 478 | if ((1.-sp) < 1.e-6) w = s2lpm*(3.-sp); |
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| 479 | else w = s2lpm*(1.+1./sp); |
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| 480 | |
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| 481 | supr = (std::sqrt(w*w+4.*s2lpm)-w)/(std::sqrt(w*w+4.)-w) ; |
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| 482 | supr /= sp; |
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| 483 | } |
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| 484 | |
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| 485 | } |
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| 486 | return supr; |
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| 487 | } |
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| 488 | |
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| 489 | //////////////////////////////////////////////////////////////////////////////// |
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| 490 | // |
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| 491 | void G4AdjointBremsstrahlungModel::SampleSecondaries(const G4Track& aTrack, |
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| 492 | G4bool IsScatProjToProjCase, |
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| 493 | G4ParticleChange* fParticleChange) |
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| 494 | { |
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| 495 | |
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| 496 | //G4cout<<"Adjoint Brem"<<std::endl; |
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| 497 | const G4DynamicParticle* theAdjointPrimary =aTrack.GetDynamicParticle(); |
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| 498 | |
---|
| 499 | size_t ind=0; |
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| 500 | |
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| 501 | if (UseMatrixPerElement ) { //Select Material |
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| 502 | std::vector<double>* CS_Vs_Element = &CS_Vs_ElementForScatProjToProjCase; |
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| 503 | if ( !IsScatProjToProjCase) CS_Vs_Element = &CS_Vs_ElementForProdToProjCase; |
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| 504 | G4double rand_var= G4UniformRand(); |
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| 505 | G4double SumCS=0.; |
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| 506 | for (size_t i=0;i<CS_Vs_Element->size();i++){ |
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| 507 | SumCS+=(*CS_Vs_Element)[i]; |
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| 508 | if (rand_var<=SumCS/lastCS){ |
---|
| 509 | ind=i; |
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| 510 | break; |
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| 511 | } |
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| 512 | } |
---|
| 513 | } |
---|
| 514 | else { |
---|
| 515 | ind = currentMaterialIndex; |
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| 516 | } |
---|
| 517 | |
---|
| 518 | |
---|
| 519 | //Elastic inverse scattering modified compared to general G4VEmAdjointModel |
---|
| 520 | //--------------------------- |
---|
| 521 | G4double adjointPrimKinEnergy = theAdjointPrimary->GetKineticEnergy(); |
---|
| 522 | G4double adjointPrimTotalEnergy = theAdjointPrimary->GetTotalEnergy(); |
---|
| 523 | //G4double adjointPrimP =theAdjointPrimary->GetTotalMomentum(); |
---|
| 524 | if (adjointPrimKinEnergy>HighEnergyLimit*0.999){ |
---|
| 525 | return; |
---|
| 526 | } |
---|
| 527 | |
---|
| 528 | //Sample secondary energy |
---|
| 529 | //----------------------- |
---|
| 530 | |
---|
| 531 | G4double projectileKinEnergy = SampleAdjSecEnergyFromCSMatrix(ind, |
---|
| 532 | adjointPrimKinEnergy, |
---|
| 533 | IsScatProjToProjCase); |
---|
| 534 | |
---|
| 535 | |
---|
| 536 | |
---|
| 537 | |
---|
| 538 | //Weight correction |
---|
| 539 | //----------------------- |
---|
| 540 | CorrectPostStepWeight(fParticleChange, aTrack.GetWeight(), adjointPrimKinEnergy,projectileKinEnergy); |
---|
| 541 | |
---|
| 542 | |
---|
| 543 | //Kinematic |
---|
| 544 | //--------- |
---|
| 545 | |
---|
| 546 | G4double projectileM0 = electron_mass_c2; |
---|
| 547 | G4double projectileTotalEnergy = projectileM0+projectileKinEnergy; |
---|
| 548 | G4double projectileP2 = projectileTotalEnergy*projectileTotalEnergy - projectileM0*projectileM0; |
---|
| 549 | G4double projectileP = std::sqrt(projectileP2); |
---|
| 550 | |
---|
| 551 | |
---|
| 552 | //Angle of the gamma direction with the projectile taken from G4eBremsstrahlungModel |
---|
| 553 | //------------------------------------------------ |
---|
| 554 | G4double u; |
---|
| 555 | const G4double a1 = 0.625 , a2 = 3.*a1 , d = 27. ; |
---|
| 556 | |
---|
| 557 | if (9./(9.+d) > G4UniformRand()) u = - std::log(G4UniformRand()*G4UniformRand())/a1; |
---|
| 558 | else u = - std::log(G4UniformRand()*G4UniformRand())/a2; |
---|
| 559 | |
---|
| 560 | G4double theta = u*electron_mass_c2/projectileTotalEnergy; |
---|
| 561 | |
---|
| 562 | G4double sint = std::sin(theta); |
---|
| 563 | G4double cost = std::cos(theta); |
---|
| 564 | |
---|
| 565 | G4double phi = twopi * G4UniformRand() ; |
---|
| 566 | |
---|
| 567 | G4ThreeVector projectileMomentum; |
---|
| 568 | projectileMomentum=G4ThreeVector(std::cos(phi)*sint,std::sin(phi)*sint,cost)*projectileP; //gamma frame |
---|
| 569 | if (IsScatProjToProjCase) {//the adjoint primary is the scattered e- |
---|
| 570 | G4ThreeVector gammaMomentum = (projectileTotalEnergy-adjointPrimTotalEnergy)*G4ThreeVector(0.,0.,1.); |
---|
| 571 | G4ThreeVector dirProd=projectileMomentum-gammaMomentum; |
---|
| 572 | G4double cost1 = std::cos(dirProd.angle(projectileMomentum)); |
---|
| 573 | G4double sint1 = std::sqrt(1.-cost1*cost1); |
---|
| 574 | projectileMomentum=G4ThreeVector(std::cos(phi)*sint1,std::sin(phi)*sint1,cost1)*projectileP; |
---|
| 575 | |
---|
| 576 | } |
---|
| 577 | |
---|
| 578 | projectileMomentum.rotateUz(theAdjointPrimary->GetMomentumDirection()); |
---|
| 579 | |
---|
| 580 | |
---|
| 581 | |
---|
| 582 | if (!IsScatProjToProjCase && CorrectWeightMode){ //kill the primary and add a secondary |
---|
| 583 | fParticleChange->ProposeTrackStatus(fStopAndKill); |
---|
| 584 | fParticleChange->AddSecondary(new G4DynamicParticle(theAdjEquivOfDirectPrimPartDef,projectileMomentum)); |
---|
| 585 | //G4cout<<"projectileMomentum "<<projectileMomentum<<std::endl; |
---|
| 586 | } |
---|
| 587 | else { |
---|
| 588 | fParticleChange->ProposeEnergy(projectileKinEnergy); |
---|
| 589 | fParticleChange->ProposeMomentumDirection(projectileMomentum.unit()); |
---|
| 590 | //G4cout<<"projectileMomentum "<<projectileMomentum<<std::endl; |
---|
| 591 | } |
---|
| 592 | } |
---|
| 593 | //////////////////////////////////////////////////////////////////////////////// |
---|
| 594 | // |
---|
| 595 | void G4AdjointBremsstrahlungModel::DefineDirectBremModel(G4eBremsstrahlungModel* aModel) |
---|
| 596 | {theDirectBremModel=aModel; |
---|
| 597 | DefineDirectEMModel(aModel); |
---|
| 598 | } |
---|
| 599 | //////////////////////////////////////////////////////////////////////////////// |
---|
| 600 | // |
---|
| 601 | void G4AdjointBremsstrahlungModel::InitialiseParameters() |
---|
| 602 | { |
---|
| 603 | static const G4double |
---|
| 604 | ah10 = 4.67733E+00, ah11 =-6.19012E-01, ah12 = 2.02225E-02, |
---|
| 605 | ah20 =-7.34101E+00, ah21 = 1.00462E+00, ah22 =-3.20985E-02, |
---|
| 606 | ah30 = 2.93119E+00, ah31 =-4.03761E-01, ah32 = 1.25153E-02; |
---|
| 607 | |
---|
| 608 | static const G4double |
---|
| 609 | bh10 = 4.23071E+00, bh11 =-6.10995E-01, bh12 = 1.95531E-02, |
---|
| 610 | bh20 =-7.12527E+00, bh21 = 9.69160E-01, bh22 =-2.74255E-02, |
---|
| 611 | bh30 = 2.69925E+00, bh31 =-3.63283E-01, bh32 = 9.55316E-03; |
---|
| 612 | |
---|
| 613 | /* static const G4double |
---|
| 614 | al00 =-2.05398E+00, al01 = 2.38815E-02, al02 = 5.25483E-04, |
---|
| 615 | al10 =-7.69748E-02, al11 =-6.91499E-02, al12 = 2.22453E-03, |
---|
| 616 | al20 = 4.06463E-02, al21 =-1.01281E-02, al22 = 3.40919E-04; |
---|
| 617 | |
---|
| 618 | static const G4double |
---|
| 619 | bl00 = 1.04133E+00, bl01 =-9.43291E-03, bl02 =-4.54758E-04, |
---|
| 620 | bl10 = 1.19253E-01, bl11 = 4.07467E-02, bl12 =-1.30718E-03, |
---|
| 621 | bl20 =-1.59391E-02, bl21 = 7.27752E-03, bl22 =-1.94405E-04;*/ |
---|
| 622 | |
---|
| 623 | |
---|
| 624 | const G4ElementTable* theElementTable = G4Element::GetElementTable(); |
---|
| 625 | FZ.clear(); |
---|
| 626 | ah1.clear(); |
---|
| 627 | ah2.clear(); |
---|
| 628 | ah3.clear(); |
---|
| 629 | |
---|
| 630 | bh1.clear(); |
---|
| 631 | bh2.clear(); |
---|
| 632 | bh3.clear(); |
---|
| 633 | |
---|
| 634 | al0.clear(); |
---|
| 635 | al1.clear(); |
---|
| 636 | al2.clear(); |
---|
| 637 | |
---|
| 638 | bl0.clear(); |
---|
| 639 | bl1.clear(); |
---|
| 640 | bl2.clear(); |
---|
| 641 | SigmaPerAtom.clear(); |
---|
| 642 | |
---|
| 643 | for (size_t j=0; j<theElementTable->size();j++){ |
---|
| 644 | |
---|
| 645 | G4Element* anElement=(*theElementTable)[j]; |
---|
| 646 | G4double lnZ = 3.*(anElement->GetIonisation()->GetlogZ3()); |
---|
| 647 | FZ.push_back(lnZ* (4.- 0.55*lnZ)); |
---|
| 648 | G4double ZZ = anElement->GetIonisation()->GetZZ3(); |
---|
| 649 | |
---|
| 650 | ah1.push_back(ah10 + ZZ* (ah11 + ZZ* ah12)); |
---|
| 651 | ah2.push_back(ah20 + ZZ* (ah21 + ZZ* ah22)); |
---|
| 652 | ah3.push_back(ah30 + ZZ* (ah31 + ZZ* ah32)); |
---|
| 653 | |
---|
| 654 | bh1.push_back(bh10 + ZZ* (bh11 + ZZ* bh12)); |
---|
| 655 | bh2.push_back(bh20 + ZZ* (bh21 + ZZ* bh22)); |
---|
| 656 | bh3.push_back(bh30 + ZZ* (bh31 + ZZ* bh32)); |
---|
| 657 | /*SigmaPerAtom.push_back(theDirectEMModel->ComputeCrossSectionPerAtom( |
---|
| 658 | theDirectPrimaryPartDef,GetHighEnergyLimit()/2., |
---|
| 659 | anElement->GetZ(),1.,GetLowEnergyLimit(),1.e20));*/ |
---|
| 660 | |
---|
| 661 | |
---|
| 662 | |
---|
| 663 | } |
---|
| 664 | } |
---|