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Geant4/processes/cuts/src/G4RToEConvForElectron.cc

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Diff markup

Differences between /processes/cuts/src/G4RToEConvForElectron.cc (Version 11.3.0) and /processes/cuts/src/G4RToEConvForElectron.cc (Version 7.1)


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 25 //                                                 22 //
 26 // G4RToEConvForElectron class implementation  << 
 27 //                                                 23 //
 28 // Author: H.Kurashige, 05 October 2002 - Firs <<  24 // $Id: G4RToEConvForElectron.cc,v 1.3 2004/12/02 06:53:56 kurasige Exp $
 29 // ------------------------------------------- <<  25 // GEANT4 tag $Name: geant4-07-01 $
                                                   >>  26 //
                                                   >>  27 //
                                                   >>  28 // --------------------------------------------------------------
                                                   >>  29 //      GEANT 4 class implementation file/  History:
                                                   >>  30 //    5 Oct. 2002, H.Kuirashige : Structure created based on object model
                                                   >>  31 // --------------------------------------------------------------
 30                                                    32 
 31 #include "G4RToEConvForElectron.hh"                33 #include "G4RToEConvForElectron.hh"
 32 #include "G4ParticleDefinition.hh"                 34 #include "G4ParticleDefinition.hh"
 33 #include "G4ParticleTable.hh"                      35 #include "G4ParticleTable.hh"
                                                   >>  36 #include "G4Material.hh"
                                                   >>  37 #include "G4PhysicsLogVector.hh"
                                                   >>  38 
                                                   >>  39 #include "G4ios.hh"
                                                   >>  40 #include <iomanip>
                                                   >>  41 #include <strstream>
 34                                                    42 
 35 #include "G4PhysicalConstants.hh"              <<  43 G4RToEConvForElectron::G4RToEConvForElectron() : G4VRangeToEnergyConverter()
 36 #include "G4SystemOfUnits.hh"                  << 
 37 #include "G4Pow.hh"                            << 
 38 #include "G4Log.hh"                            << 
 39 #include "G4Exp.hh"                            << 
 40                                                << 
 41 // ------------------------------------------- << 
 42 G4RToEConvForElectron::G4RToEConvForElectron() << 
 43   : G4VRangeToEnergyConverter()                << 
 44 {                                                  44 {    
 45   theParticle = G4ParticleTable::GetParticleTa <<  45   theParticle =  G4ParticleTable::GetParticleTable()->FindParticle("e-");
 46   if (theParticle == nullptr )                 <<  46   if (theParticle ==0) {
 47   {                                            << 
 48 #ifdef G4VERBOSE                                   47 #ifdef G4VERBOSE
 49     if (GetVerboseLevel()>0)                   <<  48     if (GetVerboseLevel()>0) {
 50     {                                          <<  49       G4cout << " G4RToEConvForElectron::G4RToEConvForElectron() ";
 51       G4cout << "G4RToEConvForElectron::G4RToE <<  50       G4cout << " Electron is not defined !!" << G4endl;
 52       G4cout << "Electron is not defined !!" < << 
 53     }                                              51     }
 54 #endif                                             52 #endif
 55   }                                            <<  53   } 
 56   else                                         << 
 57   {                                            << 
 58     fPDG = theParticle->GetPDGEncoding();      << 
 59   }                                            << 
 60 }                                                  54 }
 61                                                    55 
 62 // ------------------------------------------- <<  56 G4RToEConvForElectron::~G4RToEConvForElectron()
 63 G4RToEConvForElectron::~G4RToEConvForElectron( <<  57 { 
 64 {}                                             <<  58 }
 65                                                <<  59 
 66 // ------------------------------------------- <<  60 
 67 G4double G4RToEConvForElectron::ComputeValue(c <<  61 // **********************************************************************
 68                                              c <<  62 // ************************* ComputeLoss ********************************
                                                   >>  63 // **********************************************************************
                                                   >>  64 G4double G4RToEConvForElectron::ComputeLoss(G4double AtomicNumber,
                                                   >>  65               G4double KineticEnergy) const
 69 {                                                  66 {
 70   const G4double cbr1=0.02, cbr2=-5.7e-5, cbr3 <<  67   static G4double Z;  
 71   const G4double Tlow=10.*CLHEP::keV, Thigh=1. <<  68   static G4double taul, ionpot, ionpotlog;
 72   const G4double taul = Tlow/CLHEP::electron_m <<  69   const  G4double cbr1=0.02, cbr2=-5.7e-5, cbr3=1., cbr4=0.072;
 73   const G4double log05 = G4Log(0.5);           <<  70   const  G4double Tlow=10.*keV, Thigh=1.*GeV;
 74   const G4double taul12 = std::sqrt(taul);     <<  71   static G4double bremfactor= 0.1 ;
 75   const G4double bremfactor = 0.1;             <<  72  
 76                                                <<  73   G4double Mass = theParticle->GetPDGMass();       
 77   const G4double Zlog = G4Pow::GetInstance()-> <<  74   //  calculate dE/dx for electrons
 78   const G4double ionpot =                      <<  75   if( std::abs(AtomicNumber-Z)>0.1 ) {
 79     1.6e-5*CLHEP::MeV*G4Exp(0.9*Zlog)/CLHEP::e <<  76     Z = AtomicNumber;
 80   const G4double ionpotlog = G4Log(ionpot);    <<  77     taul = Tlow/Mass;
                                                   >>  78     ionpot = 1.6e-5*MeV*std::exp(0.9*std::log(Z))/Mass;
                                                   >>  79     ionpotlog = std::log(ionpot);
                                                   >>  80   } 
                                                   >>  81 
 81                                                    82 
 82   const G4double tau = kinEnergy/CLHEP::electr <<  83   G4double tau = KineticEnergy/Mass;
 83   G4double dEdx = 0.0;                         <<  84   G4double dEdx;
 84                                                    85 
 85   if(tau<taul)                                 <<  86   if(tau<taul) {
 86   {                                            << 
 87     G4double t1 = taul+1.;                         87     G4double t1 = taul+1.;
 88     G4double t2 = taul+2.;                         88     G4double t2 = taul+2.;
 89     G4double tsq = taul*taul;                      89     G4double tsq = taul*taul;
 90     G4double beta2 = taul*t2/(t1*t1);              90     G4double beta2 = taul*t2/(t1*t1);
 91     G4double f = 1.-beta2+G4Log(tsq/2.)        <<  91     G4double f = 1.-beta2+std::log(tsq/2.)
 92                +(0.5+0.25*tsq+(1.+2.*taul)*log <<  92                   +(0.5+0.25*tsq+(1.+2.*taul)*std::log(0.5))/(t1*t1);
 93     dEdx = Z*(G4Log(2.*taul+4.)-2.*ionpotlog+f <<  93     dEdx = (std::log(2.*taul+4.)-2.*ionpotlog+f)/beta2;
 94     dEdx *= taul12/std::sqrt(tau);             <<  94     dEdx = twopi_mc2_rcl2*Z*dEdx;
 95   }                                            <<  95     G4double clow = dEdx*std::sqrt(taul);
 96   else                                         <<  96     dEdx = clow/std::sqrt(KineticEnergy/Mass);
 97   {                                            <<  97 
                                                   >>  98   } else {
 98     G4double t1 = tau+1.;                          99     G4double t1 = tau+1.;
 99     G4double t2 = tau+2.;                         100     G4double t2 = tau+2.;
100     G4double tsq = tau*tau;                       101     G4double tsq = tau*tau;
101     G4double beta2 = tau*t2/(t1*t1);              102     G4double beta2 = tau*t2/(t1*t1);
102     G4double f = 1.-beta2+G4Log(tsq/2.)        << 103     G4double f = 1.-beta2+std::log(tsq/2.)
103                    +(0.5+0.25*tsq+(1.+2.*tau)* << 104                    +(0.5+0.25*tsq+(1.+2.*tau)*std::log(0.5))/(t1*t1);
104     dEdx = Z*(G4Log(2.*tau+4.)-2.*ionpotlog+f) << 105     dEdx = (std::log(2.*tau+4.)-2.*ionpotlog+f)/beta2;
                                                   >> 106     dEdx = twopi_mc2_rcl2*Z*dEdx;
105                                                   107 
106     // loss from bremsstrahlung follows           108     // loss from bremsstrahlung follows
107     G4double cbrem = (cbr1+cbr2*Z)*(cbr3+cbr4* << 109     G4double cbrem = (cbr1+cbr2*Z)
108     dEdx += Z*(Z+1)*cbrem*bremfactor*tau/beta2 << 110                        *(cbr3+cbr4*std::log(KineticEnergy/Thigh));
                                                   >> 111     cbrem = Z*(Z+1.)*cbrem*tau/beta2;
                                                   >> 112 
                                                   >> 113     cbrem *= bremfactor ;
                                                   >> 114 
                                                   >> 115     dEdx += twopi_mc2_rcl2*cbrem;
109   }                                               116   }
110                                                   117 
111   return dEdx*CLHEP::twopi_mc2_rcl2;           << 118   return dEdx;
112 }                                                 119 }
113                                                   120 
114 // ------------------------------------------- << 121 
                                                   >> 122 void G4RToEConvForElectron::BuildRangeVector(const G4Material* aMaterial,
                                                   >> 123                G4double       maxEnergy,
                                                   >> 124                G4double       aMass,
                                                   >> 125                G4PhysicsLogVector* rangeVector)
                                                   >> 126 {
                                                   >> 127   //  create range vector for a material
                                                   >> 128   const G4double tlim = 10.*keV;
                                                   >> 129   const G4int maxnbint = 100;
                                                   >> 130 
                                                   >> 131   const G4ElementVector* elementVector = aMaterial->GetElementVector();
                                                   >> 132   const G4double* atomicNumDensityVector = aMaterial->GetAtomicNumDensityVector();
                                                   >> 133   G4int NumEl = aMaterial->GetNumberOfElements();
                                                   >> 134 
                                                   >> 135   // calculate parameters of the low energy part first
                                                   >> 136   size_t i;
                                                   >> 137   G4double loss=0.;
                                                   >> 138   for (i=0; i<size_t(NumEl); i++) {
                                                   >> 139     G4bool isOut;
                                                   >> 140     G4int IndEl = (*elementVector)[i]->GetIndex();
                                                   >> 141     loss += atomicNumDensityVector[i]*
                                                   >> 142            (*theLossTable)[IndEl]->GetValue(tlim,isOut);
                                                   >> 143   }
                                                   >> 144   G4double taulim = tlim/aMass;
                                                   >> 145   G4double clim = std::sqrt(taulim)*loss;
                                                   >> 146   G4double taumax = maxEnergy/aMass;
                                                   >> 147 
                                                   >> 148   // now the range vector can be filled
                                                   >> 149   for ( i=0; i<size_t(TotBin); i++) {
                                                   >> 150     G4double LowEdgeEnergy = rangeVector->GetLowEdgeEnergy(i);
                                                   >> 151     G4double tau = LowEdgeEnergy/aMass;
                                                   >> 152 
                                                   >> 153     if ( tau <= taulim ) {
                                                   >> 154       G4double Value = 2.*aMass*tau*std::sqrt(tau)/(3.*clim);
                                                   >> 155       rangeVector->PutValue(i,Value);
                                                   >> 156     } else {
                                                   >> 157       G4double rangelim = 2.*aMass*taulim*std::sqrt(taulim)/(3.*clim);
                                                   >> 158       G4double ltaulow = std::log(taulim);
                                                   >> 159       G4double ltauhigh = std::log(tau);
                                                   >> 160       G4double ltaumax = std::log(taumax);
                                                   >> 161       G4int    nbin = G4int(maxnbint*(ltauhigh-ltaulow)/(ltaumax-ltaulow));
                                                   >> 162       if( nbin < 1 ) nbin = 1;
                                                   >> 163       G4double Value = RangeLogSimpson( NumEl, elementVector,
                                                   >> 164           atomicNumDensityVector, aMass,
                                                   >> 165           ltaulow, ltauhigh, nbin) 
                                                   >> 166                + rangelim;
                                                   >> 167       rangeVector->PutValue(i,Value);
                                                   >> 168     }
                                                   >> 169   }
                                                   >> 170 } 
115                                                   171