1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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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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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 | // $Id: G4LossTableBuilder.cc,v 1.24 2007/02/16 11:59:35 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-01-patch-02 $ |
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28 | // |
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29 | // ------------------------------------------------------------------- |
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30 | // |
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31 | // GEANT4 Class file |
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32 | // |
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33 | // |
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34 | // File name: G4LossTableBuilder |
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35 | // |
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36 | // Author: Vladimir Ivanchenko |
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37 | // |
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38 | // Creation date: 03.01.2002 |
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39 | // |
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40 | // Modifications: |
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41 | // |
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42 | // 23-01-03 V.Ivanchenko Cut per region |
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43 | // 21-07-04 V.Ivanchenko Fix problem of range for dedx=0 |
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44 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivanchenko) |
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45 | // 07-12-04 Fix of BuildDEDX table (V.Ivanchenko) |
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46 | // 27-03-06 Add bool options isIonisation (V.Ivanchenko) |
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47 | // 16-01-07 Fill new (not old) DEDX table (V.Ivanchenko) |
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48 | // 12-02-07 Use G4LPhysicsFreeVector for the inverse range table (V.Ivanchenko) |
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49 | // |
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50 | // Class Description: |
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51 | // |
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52 | // ------------------------------------------------------------------- |
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53 | // |
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54 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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55 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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56 | |
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57 | #include "G4LossTableBuilder.hh" |
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58 | #include "G4PhysicsTable.hh" |
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59 | #include "G4PhysicsLogVector.hh" |
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60 | #include "G4PhysicsTableHelper.hh" |
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61 | #include "G4LPhysicsFreeVector.hh" |
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62 | |
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63 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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64 | |
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65 | G4LossTableBuilder::G4LossTableBuilder() |
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66 | {} |
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67 | |
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68 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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69 | |
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70 | G4LossTableBuilder::~G4LossTableBuilder() |
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71 | {} |
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72 | |
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73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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74 | |
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75 | void G4LossTableBuilder::BuildDEDXTable(G4PhysicsTable* dedxTable, |
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76 | const std::vector<G4PhysicsTable*>& list) |
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77 | { |
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78 | size_t n_processes = list.size(); |
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79 | if(1 >= n_processes) return; |
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80 | |
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81 | size_t n_vectors = (list[0])->length(); |
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82 | if(0 >= n_vectors) return; |
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83 | |
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84 | G4bool b; |
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85 | |
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86 | G4PhysicsVector* pv = (*(list[0]))[0]; |
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87 | size_t nbins = pv->GetVectorLength(); |
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88 | G4double elow = pv->GetLowEdgeEnergy(0); |
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89 | G4double ehigh = pv->GetLowEdgeEnergy(nbins); |
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90 | for (size_t i=0; i<n_vectors; i++) { |
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91 | |
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92 | pv = new G4PhysicsLogVector(elow, ehigh, nbins); |
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93 | for (size_t j=0; j<nbins; j++) { |
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94 | G4double dedx = 0.0; |
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95 | G4double energy = pv->GetLowEdgeEnergy(j); |
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96 | |
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97 | for (size_t k=0; k<n_processes; k++) { |
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98 | dedx += ((*(list[k]))[i])->GetValue(energy, b); |
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99 | } |
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100 | pv->PutValue(j, dedx); |
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101 | G4PhysicsTableHelper::SetPhysicsVector(dedxTable, i, pv); |
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102 | } |
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103 | } |
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104 | } |
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105 | |
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106 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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107 | |
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108 | void G4LossTableBuilder::BuildRangeTable(const G4PhysicsTable* dedxTable, |
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109 | G4PhysicsTable* rangeTable, |
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110 | G4bool isIonisation) |
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111 | // Build range table from the energy loss table |
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112 | { |
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113 | size_t n_vectors = dedxTable->length(); |
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114 | if(!n_vectors) return; |
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115 | |
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116 | G4bool b; |
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117 | size_t n = 100; |
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118 | G4double del = 1.0/(G4double)n; |
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119 | |
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120 | for (size_t i=0; i<n_vectors; i++) { |
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121 | |
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122 | if (rangeTable->GetFlag(i) || !isIonisation) { |
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123 | G4PhysicsVector* pv = (*dedxTable)[i]; |
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124 | size_t nbins = pv->GetVectorLength(); |
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125 | size_t bin0 = 0; |
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126 | G4double elow = pv->GetLowEdgeEnergy(0); |
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127 | G4double ehigh = pv->GetLowEdgeEnergy(nbins); |
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128 | G4double dedx1 = pv->GetValue(elow, b); |
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129 | |
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130 | if(dedx1 == 0.0) { |
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131 | for (size_t k=1; k<nbins; k++) { |
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132 | bin0++; |
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133 | elow = pv->GetLowEdgeEnergy(k); |
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134 | dedx1 = pv->GetValue(elow, b); |
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135 | if(dedx1 > 0.0) break; |
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136 | } |
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137 | nbins -= bin0; |
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138 | } |
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139 | |
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140 | G4PhysicsLogVector* v = new G4PhysicsLogVector(elow, ehigh, nbins); |
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141 | |
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142 | G4double range = 2.*elow/dedx1; |
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143 | //G4double range = elow/dedx1; |
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144 | v->PutValue(0,range); |
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145 | G4double energy1 = elow; |
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146 | |
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147 | for (size_t j=1; j<nbins; j++) { |
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148 | |
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149 | G4double energy2 = pv->GetLowEdgeEnergy(j+bin0); |
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150 | G4double dedx2 = pv->GetValue(energy2, b); |
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151 | G4double de = (energy2 - energy1) * del; |
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152 | G4double energy = energy1 - de*0.5; |
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153 | |
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154 | G4bool yes = true; |
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155 | //G4bool yes = false; |
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156 | if(dedx1 < DBL_MIN || dedx2 < DBL_MIN) yes = false; |
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157 | |
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158 | G4double fac, f; |
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159 | |
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160 | if(yes) fac = std::log(dedx2/dedx1)/std::log(energy2/energy1); |
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161 | else fac = (dedx2 - dedx1)/(energy2 - energy1); |
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162 | |
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163 | for (size_t k=0; k<n; k++) { |
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164 | energy += de; |
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165 | if(yes) f = dedx1*std::exp(fac*std::log(energy/energy1)); |
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166 | else f = dedx1 + fac*(energy - energy1); |
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167 | if(f > DBL_MIN) range += de/f; |
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168 | } |
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169 | // G4cout << "Range i= " <<i << " j= " << j << G4endl; |
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170 | v->PutValue(j,range); |
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171 | energy1 = energy2; |
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172 | dedx1 = dedx2; |
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173 | } |
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174 | G4PhysicsTableHelper::SetPhysicsVector(rangeTable, i, v); |
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175 | } |
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176 | } |
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177 | } |
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178 | |
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179 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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180 | |
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181 | void G4LossTableBuilder::BuildInverseRangeTable(const G4PhysicsTable* rangeTable, |
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182 | G4PhysicsTable* invRangeTable, |
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183 | G4bool isIonisation) |
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184 | // Build inverse range table from the energy loss table |
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185 | { |
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186 | size_t n_vectors = rangeTable->length(); |
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187 | if(!n_vectors) return; |
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188 | G4bool b; |
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189 | |
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190 | for (size_t i=0; i<n_vectors; i++) { |
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191 | |
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192 | if (invRangeTable->GetFlag(i) || !isIonisation) { |
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193 | G4PhysicsVector* pv = (*rangeTable)[i]; |
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194 | size_t nbins = pv->GetVectorLength(); |
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195 | G4double elow = pv->GetLowEdgeEnergy(0); |
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196 | G4double ehigh = pv->GetLowEdgeEnergy(nbins-1); |
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197 | G4double rlow = pv->GetValue(elow, b); |
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198 | G4double rhigh = pv->GetValue(ehigh, b); |
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199 | |
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200 | rhigh *= std::exp(std::log(rhigh/rlow)/((G4double)(nbins-1))); |
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201 | |
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202 | |
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203 | G4LPhysicsFreeVector* v = new G4LPhysicsFreeVector(nbins,rlow,rhigh); |
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204 | for (size_t j=0; j<nbins; j++) { |
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205 | G4double e = pv->GetLowEdgeEnergy(j); |
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206 | G4double r = pv->GetValue(e, b); |
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207 | v->PutValues(j,r,e); |
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208 | } |
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209 | |
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210 | G4PhysicsTableHelper::SetPhysicsVector(invRangeTable, i, v); |
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211 | } |
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212 | } |
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213 | } |
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214 | |
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215 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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216 | |
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