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25 // 25 //
>> 26 //
>> 27
>> 28 #include <complex>
26 29
27 #include "G4XTRTransparentRegRadModel.hh" 30 #include "G4XTRTransparentRegRadModel.hh"
>> 31 #include "Randomize.hh"
>> 32 #include "G4Integrator.hh"
>> 33 #include "G4Gamma.hh"
28 34
29 #include "G4PhysicalConstants.hh" << 35 using namespace std;
30 36
31 ////////////////////////////////////////////// 37 ////////////////////////////////////////////////////////////////////////////
>> 38 //
32 // Constructor, destructor 39 // Constructor, destructor
33 G4XTRTransparentRegRadModel::G4XTRTransparentR << 40
34 G4LogicalVolume* anEnvelope, G4Material* foi << 41 G4XTRTransparentRegRadModel::G4XTRTransparentRegRadModel(G4LogicalVolume *anEnvelope,
35 G4double a, G4double b, G4int n, const G4Str << 42 G4Material* foilMat,G4Material* gasMat,
36 : G4VXTRenergyLoss(anEnvelope, foilMat, gasM << 43 G4double a, G4double b, G4int n,
>> 44 const G4String& processName) :
>> 45 G4VXTRenergyLoss(anEnvelope,foilMat,gasMat,a,b,n,processName)
37 { 46 {
38 G4cout << "Regular transparent X-ray TR rad << 47 G4cout<<"Regular transparent X-ray TR radiator EM process is called"<<G4endl;
39 << G4endl; <<
40 48
>> 49 // Build energy and angular integral spectra of X-ray TR photons from
>> 50 // a radiator
41 fExitFlux = true; 51 fExitFlux = true;
42 fAlphaPlate = 10000; 52 fAlphaPlate = 10000;
43 fAlphaGas = 1000; 53 fAlphaGas = 1000;
>> 54
>> 55 // BuildTable();
44 } 56 }
45 57
46 ////////////////////////////////////////////// 58 ///////////////////////////////////////////////////////////////////////////
47 G4XTRTransparentRegRadModel::~G4XTRTransparent <<
48 59
49 ////////////////////////////////////////////// << 60 G4XTRTransparentRegRadModel::~G4XTRTransparentRegRadModel()
50 void G4XTRTransparentRegRadModel::ProcessDescr <<
51 { 61 {
52 out << "Process describing radiator of X-ray << 62 ;
53 } 63 }
54 64
55 ////////////////////////////////////////////// 65 ///////////////////////////////////////////////////////////////////////////
>> 66 //
>> 67 //
>> 68
56 G4double G4XTRTransparentRegRadModel::Spectral 69 G4double G4XTRTransparentRegRadModel::SpectralXTRdEdx(G4double energy)
57 { 70 {
58 static constexpr G4double cofPHC = 4. * pi * << 71 G4double result, sum = 0., tmp, cof1, cof2, cofMin, cofPHC,aMa, bMb, sigma;
59 G4double result, sum = 0., tmp, cof1, cof2, <<
60 G4int k, kMax, kMin; 72 G4int k, kMax, kMin;
61 73
62 aMa = GetPlateLinearPhotoAbs(energy); 74 aMa = GetPlateLinearPhotoAbs(energy);
63 bMb = GetGasLinearPhotoAbs(energy); 75 bMb = GetGasLinearPhotoAbs(energy);
64 76
65 if(fCompton) 77 if(fCompton)
66 { 78 {
67 aMa += GetPlateCompton(energy); 79 aMa += GetPlateCompton(energy);
68 bMb += GetGasCompton(energy); 80 bMb += GetGasCompton(energy);
69 } 81 }
70 aMa *= fPlateThick; 82 aMa *= fPlateThick;
71 bMb *= fGasThick; 83 bMb *= fGasThick;
72 84
73 sigma = aMa + bMb; 85 sigma = aMa + bMb;
>> 86
>> 87 cofPHC = 4*pi*hbarc;
>> 88 tmp = (fSigma1 - fSigma2)/cofPHC/energy;
>> 89 cof1 = fPlateThick*tmp;
>> 90 cof2 = fGasThick*tmp;
74 91
75 tmp = (fSigma1 - fSigma2) / cofPHC / energy << 92 cofMin = energy*(fPlateThick + fGasThick)/fGamma/fGamma;
76 cof1 = fPlateThick * tmp; << 93 cofMin += (fPlateThick*fSigma1 + fGasThick*fSigma2)/energy;
77 cof2 = fGasThick * tmp; <<
78 <<
79 cofMin = energy * (fPlateThick + fGasThick) <<
80 cofMin += (fPlateThick * fSigma1 + fGasThick <<
81 cofMin /= cofPHC; 94 cofMin /= cofPHC;
82 95
>> 96 // if (fGamma < 1200) kMin = G4int(cofMin); // 1200 ?
>> 97 // else kMin = 1;
>> 98
>> 99
83 kMin = G4int(cofMin); 100 kMin = G4int(cofMin);
84 if(cofMin > kMin) << 101 if (cofMin > kMin) kMin++;
85 kMin++; <<
86 102
87 kMax = kMin + 19; << 103 // tmp = (fPlateThick + fGasThick)*energy*fMaxThetaTR;
>> 104 // tmp /= cofPHC;
>> 105 // kMax = G4int(tmp);
>> 106 // if(kMax < 0) kMax = 0;
>> 107 // kMax += kMin;
>> 108
>> 109
>> 110 kMax = kMin + 19; // 5; // 9; // kMin + G4int(tmp);
>> 111
>> 112 // tmp /= fGamma;
>> 113 // if( G4int(tmp) < kMin ) kMin = G4int(tmp);
>> 114 // G4cout<<"kMin = "<<kMin<<"; kMax = "<<kMax<<G4endl;
88 115
89 for(k = kMin; k <= kMax; k++) << 116 for( k = kMin; k <= kMax; k++ )
90 { 117 {
91 tmp = pi * fPlateThick * (k + cof2) / ( << 118 tmp = pi*fPlateThick*(k + cof2)/(fPlateThick + fGasThick);
92 result = (k - cof1) * (k - cof1) * (k + co << 119 result = (k - cof1)*(k - cof1)*(k + cof2)*(k + cof2);
93 120
94 if(k == kMin && kMin == G4int(cofMin)) << 121 if( k == kMin && kMin == G4int(cofMin) )
95 { 122 {
96 sum += << 123 sum += 0.5*sin(tmp)*sin(tmp)*std::abs(k-cofMin)/result;
97 0.5 * std::sin(tmp) * std::sin(tmp) * <<
98 } 124 }
99 else 125 else
100 { 126 {
101 sum += std::sin(tmp) * std::sin(tmp) * s << 127 sum += sin(tmp)*sin(tmp)*std::abs(k-cofMin)/result;
102 } 128 }
>> 129 // G4cout<<"k = "<<k<<"; sum = "<<sum<<G4endl;
103 } 130 }
104 result = 4. * (cof1 + cof2) * (cof1 + cof2) << 131 result = 4.*( cof1 + cof2 )*( cof1 + cof2 )*sum/energy;
105 result *= (1. - std::exp(-fPlateNumber * sig << 132 result *= ( 1. - exp(-fPlateNumber*sigma) )/( 1. - exp(-sigma) );
106 return result; 133 return result;
107 } 134 }
108 135
>> 136
109 ////////////////////////////////////////////// 137 ///////////////////////////////////////////////////////////////////////////
>> 138 //
110 // Approximation for radiator interference fac 139 // Approximation for radiator interference factor for the case of
111 // fully Regular radiator. The plate and gas g << 140 // fully Regular radiator. The plate and gas gap thicknesses are fixed .
112 // The mean values of the plate and gas gap th << 141 // The mean values of the plate and gas gap thicknesses
113 // are supposed to be about XTR formation zone << 142 // are supposed to be about XTR formation zones but much less than
114 // mean absorption length of XTR photons in co << 143 // mean absorption length of XTR photons in coresponding material.
115 G4double G4XTRTransparentRegRadModel::GetStack << 144
116 << 145 G4double
117 << 146 G4XTRTransparentRegRadModel::GetStackFactor( G4double energy,
>> 147 G4double gamma, G4double varAngle )
118 { 148 {
119 G4double aZa = fPlateThick / GetPlateForma << 149 /*
120 G4double bZb = fGasThick / GetGasFormation << 150 G4double result, Za, Zb, Ma, Mb, sigma;
121 G4double aMa = fPlateThick * GetPlateLinea << 151
122 G4double bMb = fGasThick * GetGasLinearPho << 152 Za = GetPlateFormationZone(energy,gamma,varAngle);
123 G4double sigma = aMa * fPlateThick + bMb * f << 153 Zb = GetGasFormationZone(energy,gamma,varAngle);
124 G4double Qa = std::exp(-0.5 * aMa); << 154 Ma = GetPlateLinearPhotoAbs(energy);
125 G4double Qb = std::exp(-0.5 * bMb); << 155 Mb = GetGasLinearPhotoAbs(energy);
126 G4double Q = Qa * Qb; << 156 sigma = Ma*fPlateThick + Mb*fGasThick;
127 << 157
128 G4complex Ha(Qa * std::cos(aZa), -Qa * std:: << 158 G4complex Ca(1.0+0.5*fPlateThick*Ma/fAlphaPlate,fPlateThick/Za/fAlphaPlate);
129 G4complex Hb(Qb * std::cos(bZb), -Qb * std:: << 159 G4complex Cb(1.0+0.5*fGasThick*Mb/fAlphaGas,fGasThick/Zb/fAlphaGas);
130 G4complex H = Ha * Hb; << 160
>> 161 G4complex Ha = pow(Ca,-fAlphaPlate);
>> 162 G4complex Hb = pow(Cb,-fAlphaGas);
>> 163 G4complex H = Ha*Hb;
>> 164 G4complex F1 = (1.0 - Ha)*(1.0 - Hb )/(1.0 - H)
>> 165 * G4double(fPlateNumber) ;
>> 166 G4complex F2 = (1.0-Ha)*(1.0-Ha)*Hb/(1.0-H)/(1.0-H)
>> 167 * (1.0 - exp(-0.5*fPlateNumber*sigma)) ;
>> 168 // *(1.0 - pow(H,fPlateNumber)) ;
>> 169 G4complex R = (F1 + F2)*OneInterfaceXTRdEdx(energy,gamma,varAngle);
>> 170 // G4complex R = F2*OneInterfaceXTRdEdx(energy,gamma,varAngle);
>> 171 result = 2.0*real(R);
>> 172 return result;
>> 173 */
>> 174 // numerically unstable result
>> 175
>> 176 G4double result, Qa, Qb, Q, aZa, bZb, aMa, bMb, D, sigma;
>> 177
>> 178 aZa = fPlateThick/GetPlateFormationZone(energy,gamma,varAngle);
>> 179 bZb = fGasThick/GetGasFormationZone(energy,gamma,varAngle);
>> 180 aMa = fPlateThick*GetPlateLinearPhotoAbs(energy);
>> 181 bMb = fGasThick*GetGasLinearPhotoAbs(energy);
>> 182 sigma = aMa*fPlateThick + bMb*fGasThick;
>> 183 Qa = exp(-0.5*aMa);
>> 184 Qb = exp(-0.5*bMb);
>> 185 Q = Qa*Qb;
>> 186
>> 187 G4complex Ha( Qa*cos(aZa), -Qa*sin(aZa) );
>> 188 G4complex Hb( Qb*cos(bZb), -Qb*sin(bZb) );
>> 189 G4complex H = Ha*Hb;
131 G4complex Hs = conj(H); 190 G4complex Hs = conj(H);
132 G4double D = << 191 D = 1.0 /( (1 - Q)*(1 - Q) +
133 1.0 / ((1. - Q) * (1. - Q) + << 192 4*Q*sin(0.5*(aZa + bZb))*sin(0.5*(aZa + bZb)) );
134 4. * Q * std::sin(0.5 * (aZa + bZb) << 193 G4complex F1 = (1.0 - Ha)*(1.0 - Hb)*(1.0 - Hs)
135 G4complex F1 = << 194 * G4double(fPlateNumber)*D;
136 (1.0 - Ha) * (1.0 - Hb) * (1.0 - Hs) * G4d << 195 G4complex F2 = (1.0 - Ha)*(1.0 - Ha)*Hb*(1.0 - Hs)*(1.0 - Hs)
137 G4complex F2 = (1.0 - Ha) * (1.0 - Ha) * Hb << 196 // * (1.0 - pow(H,fPlateNumber)) * D*D;
138 (1.0 - std::exp(-0.5 * fPlate << 197 * (1.0 - exp(-0.5*fPlateNumber*sigma)) * D*D;
139 G4complex R = (F1 + F2) * OneInterfaceXTRdEd << 198 G4complex R = (F1 + F2)*OneInterfaceXTRdEdx(energy,gamma,varAngle);
140 return 2.0 * std::real(R); << 199 result = 2.0*real(R);
>> 200 return result;
>> 201
141 } 202 }
>> 203
>> 204
>> 205 //
>> 206 //
>> 207 ////////////////////////////////////////////////////////////////////////////
>> 208
>> 209
>> 210
>> 211
>> 212
>> 213
>> 214
>> 215
142 216