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Geant4/processes/electromagnetic/xrays/src/G4XTRRegularRadModel.cc

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Differences between /processes/electromagnetic/xrays/src/G4XTRRegularRadModel.cc (Version 11.3.0) and /processes/electromagnetic/xrays/src/G4XTRRegularRadModel.cc (Version 8.1.p2)


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 25 //                                                 25 //
                                                   >>  26 //
                                                   >>  27 
                                                   >>  28 #include <complex>
 26                                                    29 
 27 #include "G4XTRRegularRadModel.hh"                 30 #include "G4XTRRegularRadModel.hh"
                                                   >>  31 #include "Randomize.hh"
 28                                                    32 
 29 #include "G4PhysicalConstants.hh"              <<  33 #include "G4Gamma.hh"
                                                   >>  34 using namespace std;
 30                                                    35 
 31 //////////////////////////////////////////////     36 ////////////////////////////////////////////////////////////////////////////
                                                   >>  37 //
 32 // Constructor, destructor                         38 // Constructor, destructor
 33 G4XTRRegularRadModel::G4XTRRegularRadModel(G4L <<  39 
 34                                            G4M <<  40 G4XTRRegularRadModel::G4XTRRegularRadModel(G4LogicalVolume *anEnvelope,
 35                                            G4M <<  41                                          G4Material* foilMat,G4Material* gasMat,
 36                                            G4d <<  42                                          G4double a, G4double b, G4int n,
 37                                            con <<  43                                          const G4String& processName) :
 38   : G4VXTRenergyLoss(anEnvelope, foilMat, gasM <<  44   G4VXTRenergyLoss(anEnvelope,foilMat,gasMat,a,b,n,processName)  
 39 {                                                  45 {
 40   G4cout << " XTR Regular discrete radiator mo <<  46   G4cout<<" XTR Regular discrete radiator model is called"<<G4endl ;
 41                                                    47 
 42   fExitFlux = true;                                48   fExitFlux = true;
                                                   >>  49 
                                                   >>  50   // Build energy and angular integral spectra of X-ray TR photons from
                                                   >>  51   // a radiator
                                                   >>  52 
                                                   >>  53   // BuildTable() ;
 43 }                                                  54 }
 44                                                    55 
 45 //////////////////////////////////////////////     56 ///////////////////////////////////////////////////////////////////////////
 46 G4XTRRegularRadModel::~G4XTRRegularRadModel()  << 
 47                                                    57 
 48 ////////////////////////////////////////////// <<  58 G4XTRRegularRadModel::~G4XTRRegularRadModel()
 49 void G4XTRRegularRadModel::ProcessDescription( << 
 50 {                                                  59 {
 51   out << "Describes X-ray transition radiation <<  60   ;
 52          "plates\n"                            << 
 53          "fixed.\n";                           << 
 54 }                                                  61 }
 55                                                    62 
 56 ////////////////////////////////////////////// << 
 57 G4double G4XTRRegularRadModel::SpectralXTRdEdx << 
 58 {                                              << 
 59   static constexpr G4double cofPHC = 4. * pi * << 
 60   G4double result, sum = 0., tmp, cof1, cof2,  << 
 61   G4double aMa, bMb, sigma, dump;              << 
 62   G4int k, kMax, kMin;                         << 
 63                                                << 
 64   aMa   = fPlateThick * GetPlateLinearPhotoAbs << 
 65   bMb   = fGasThick * GetGasLinearPhotoAbs(ene << 
 66   sigma = 0.5 * (aMa + bMb);                   << 
 67   dump  = std::exp(-fPlateNumber * sigma);     << 
 68   if(verboseLevel > 2)                         << 
 69     G4cout << " dump = " << dump << G4endl;    << 
 70   tmp  = (fSigma1 - fSigma2) / cofPHC / energy << 
 71   cof1 = fPlateThick * tmp;                    << 
 72   cof2 = fGasThick * tmp;                      << 
 73                                                << 
 74   cofMin = energy * (fPlateThick + fGasThick)  << 
 75   cofMin += (fPlateThick * fSigma1 + fGasThick << 
 76   cofMin /= cofPHC;                            << 
 77                                                << 
 78   theta2 = cofPHC / (energy * (fPlateThick + f << 
 79                                                << 
 80   kMin = G4int(cofMin);                        << 
 81   if(cofMin > kMin)                            << 
 82     kMin++;                                    << 
 83                                                << 
 84   kMax = kMin + 49;                            << 
 85                                                << 
 86   if(verboseLevel > 2)                         << 
 87   {                                            << 
 88     G4cout << cof1 << "     " << cof2 << "     << 
 89     G4cout << "kMin = " << kMin << ";    kMax  << 
 90   }                                            << 
 91   for(k = kMin; k <= kMax; ++k)                << 
 92   {                                            << 
 93     tmp    = pi * fPlateThick * (k + cof2) / ( << 
 94     result = (k - cof1) * (k - cof1) * (k + co << 
 95     if(k == kMin && kMin == G4int(cofMin))     << 
 96     {                                          << 
 97       sum +=                                   << 
 98         0.5 * std::sin(tmp) * std::sin(tmp) *  << 
 99     }                                          << 
100     else                                       << 
101     {                                          << 
102       sum += std::sin(tmp) * std::sin(tmp) * s << 
103     }                                          << 
104     theta2k = std::sqrt(theta2 * std::abs(k -  << 
105                                                << 
106     if(verboseLevel > 2)                       << 
107     {                                          << 
108       G4cout << k << "   " << theta2k << "     << 
109              << std::sin(tmp) * std::sin(tmp)  << 
110              << "      " << sum << G4endl;     << 
111     }                                          << 
112   }                                            << 
113   result = 2 * (cof1 + cof2) * (cof1 + cof2) * << 
114   result *= dump * (-1 + dump + 2 * fPlateNumb << 
115                                                    63 
116   return result;                               << 
117 }                                              << 
118                                                    64 
119 //////////////////////////////////////////////     65 ///////////////////////////////////////////////////////////////////////////
                                                   >>  66 //
120 // Approximation for radiator interference fac     67 // Approximation for radiator interference factor for the case of
121 // fully Regular radiator. The plate and gas g <<  68 // fully Regular radiator. The plate and gas gap thicknesses are fixed .
122 // The mean values of the plate and gas gap th <<  69 // The mean values of the plate and gas gap thicknesses 
123 // are supposed to be about XTR formation zone <<  70 // are supposed to be about XTR formation zones but much less than 
124 // mean absorption length of XTR photons in co <<  71 // mean absorption length of XTR photons in coresponding material.
125 G4double G4XTRRegularRadModel::GetStackFactor( <<  72 
126                                                <<  73 G4double 
                                                   >>  74 G4XTRRegularRadModel::GetStackFactor( G4double energy, 
                                                   >>  75                                          G4double gamma, G4double varAngle )
127 {                                                  76 {
128   G4double aZa = fPlateThick / GetPlateFormati <<  77   G4double result, Qa, Qb, Q, aZa, bZb, aMa, bMb, I2 ;
129   G4double bZb = fGasThick / GetGasFormationZo <<  78   
                                                   >>  79   aZa = fPlateThick/GetPlateFormationZone(energy,gamma,varAngle) ;
                                                   >>  80   bZb = fGasThick/GetGasFormationZone(energy,gamma,varAngle) ;
                                                   >>  81 
                                                   >>  82   aMa = fPlateThick*GetPlateLinearPhotoAbs(energy) ;
                                                   >>  83   bMb = fGasThick*GetGasLinearPhotoAbs(energy) ;
                                                   >>  84 
                                                   >>  85   Qa = std::exp(-aMa) ;
                                                   >>  86   Qb = std::exp(-bMb) ;
                                                   >>  87   Q  = Qa*Qb ;
                                                   >>  88 
                                                   >>  89   //  G4complex Ca(1.0+0.5*fPlateThick*Ma,fPlateThick/Za) ; 
                                                   >>  90   //  G4complex Cb(1.0+0.5*fGasThick*Mb,fGasThick/Zb) ; 
                                                   >>  91 
                                                   >>  92   G4complex Ha( std::exp(-0.5*aMa)*std::cos(aZa),
                                                   >>  93                -std::exp(-0.5*aMa)*std::sin(aZa)   ) ; 
                                                   >>  94  
                                                   >>  95   G4complex Hb( std::exp(-0.5*bMb)*std::cos(bZb),
                                                   >>  96                -std::exp(-0.5*bMb)*std::sin(bZb)    ) ;
                                                   >>  97 
                                                   >>  98   G4complex H  = Ha*Hb ;
130                                                    99 
131   G4double aMa = fPlateThick * GetPlateLinearP << 100   G4complex Hs = std::conj(H) ;
132   G4double bMb = fGasThick * GetGasLinearPhoto << 
133                                                   101 
134   G4double Qa = std::exp(-aMa);                << 102   //  G4complex F1 = ( 0.5*(1+Qa)*(1+H) - Ha - Qa*Hb )/(1-H) ;
135   G4double Qb = std::exp(-bMb);                << 
136   G4double Q  = Qa * Qb;                       << 
137                                                   103 
138   G4complex Ha(std::exp(-0.5 * aMa) * std::cos << 104   G4complex F2 = (1.0-Ha)*(Qa-Ha)*Hb*(1.0-Hs)*(Q-Hs) ;
139                -std::exp(-0.5 * aMa) * std::si << 
140                                                   105 
141   G4complex Hb(std::exp(-0.5 * bMb) * std::cos << 106   F2          *= std::pow(Q,G4double(fPlateNumber)) - std::pow(H,fPlateNumber) ;
142                -std::exp(-0.5 * bMb) * std::si << 
143                                                   107 
144   G4complex H  = Ha * Hb;                      << 108   result       = ( 1 - std::pow(Q,G4double(fPlateNumber)) )/( 1 - Q ) ;
145   G4complex Hs = std::conj(H);                 << 
146                                                   109 
147   G4complex F2 = (1.0 - Ha) * (Qa - Ha) * Hb * << 110   result      *= (1 - Qa)*(1 + Qa - 2*std::sqrt(Qa)*std::cos(aZa)) ;
148   F2 *= std::pow(Q, G4double(fPlateNumber)) -  << 
149                                                   111 
150   G4double result = (1. - std::pow(Q, G4double << 112   result      /= (1 - std::sqrt(Q))*(1 - std::sqrt(Q)) + 
151   result *= (1. - Qa) * (1. + Qa - 2. * std::s << 113                   4*std::sqrt(Q)*std::sin(0.5*(aZa+bZb))*std::sin(0.5*(aZa+bZb)) ;
152   result /= (1. - std::sqrt(Q)) * (1. - std::s << 
153             4. * std::sqrt(Q) * std::sin(0.5 * << 
154               std::sin(0.5 * (aZa + bZb));     << 
155                                                   114 
156   G4double I2 = 1.;                            << 115   I2           = 1.; // 2.0*std::real(F2) ;
157   I2 /= (1. - std::sqrt(Q)) * (1. - std::sqrt( << 
158         4. * std::sqrt(Q) * std::sin(0.5 * (aZ << 
159           std::sin(0.5 * (aZa + bZb));         << 
160                                                   116 
161   I2 /= Q * ((std::sqrt(Q) - std::cos(aZa + bZ << 117   I2           /= (1 - std::sqrt(Q))*(1 - std::sqrt(Q)) + 
162                (std::sqrt(Q) - std::cos(aZa +  << 118                   4*std::sqrt(Q)*std::sin(0.5*(aZa+bZb))*std::sin(0.5*(aZa+bZb)) ;
163              std::sin(aZa + bZb) * std::sin(aZ << 
164                                                   119 
165   G4complex stack = 2. * I2 * F2;              << 120   I2           /= Q*( (std::sqrt(Q)-std::cos(aZa+bZb))*(std::sqrt(Q)-std::cos(aZa+bZb)) + 
166   stack += result;                             << 121                       std::sin(aZa+bZb)*std::sin(aZa+bZb)   ) ;
167   stack *= OneInterfaceXTRdEdx(energy, gamma,  << 
168                                                   122 
169   return std::real(stack);                     << 123   G4complex stack  = 2.*I2*F2;
                                                   >> 124             stack += result;
                                                   >> 125             stack *= OneInterfaceXTRdEdx(energy,gamma,varAngle);
                                                   >> 126 
                                                   >> 127       // result       += I2 ;
                                                   >> 128   result = std::real(stack);
                                                   >> 129 
                                                   >> 130   return      result ;
170 }                                                 131 }
                                                   >> 132 
                                                   >> 133 
                                                   >> 134 //
                                                   >> 135 //
                                                   >> 136 ////////////////////////////////////////////////////////////////////////////
                                                   >> 137 
                                                   >> 138 
                                                   >> 139 
                                                   >> 140 
                                                   >> 141 
                                                   >> 142 
                                                   >> 143 
                                                   >> 144 
171                                                   145