1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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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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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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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: BremLPMTest.cc,v 1.2 2008/08/22 08:16:17 schaelic Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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28 | // |
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29 | // ------------------------------------------------------------ |
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30 | // Test Routine for eBremsstrahlung-Models |
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31 | // -- including LPM effect |
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32 | // ------------------------------------------------------------ |
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33 | // run |
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34 | // make -f GNUmakefile.root G4TARGET=BremLPMTest |
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35 | // BremLPMTest |
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36 | // this creates a file eBremRel01.root which can be read using e.g. |
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37 | // python readBremLPM.py |
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38 | // ------------------------------------------------------------ |
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39 | // |
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40 | // History |
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41 | // 21.08.08 basic test created (A.Schaelicke) |
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42 | // |
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43 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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44 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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45 | |
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46 | #include "TFile.h" |
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47 | #include "TGraph.h" |
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48 | #include "TH1F.h" |
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49 | #include "TTree.h" |
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50 | |
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51 | #include "G4NistManager.hh" |
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52 | #include "G4Material.hh" |
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53 | #include "G4UnitsTable.hh" |
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54 | #include "G4Electron.hh" |
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55 | |
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56 | // ------------------------------------------------------------ |
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57 | // nasty trick to access private or protected functions |
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58 | // use only in tests and with care !!! |
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59 | #define protected public |
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60 | // ------------------------------------------------------------ |
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61 | |
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62 | #include "G4eBremsstrahlungHEModel.hh" |
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63 | #include "G4eBremsstrahlungRelModel.hh" |
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64 | #include "G4eBremsstrahlungModel.hh" |
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65 | |
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66 | |
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67 | using namespace std; |
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68 | |
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69 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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70 | |
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71 | |
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72 | void CalcCrossSection() |
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73 | { |
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74 | // initialize models |
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75 | G4eBremsstrahlungModel * model1 = new G4eBremsstrahlungModel(); |
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76 | model1->SetLPMflag(false); |
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77 | |
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78 | G4eBremsstrahlungRelModel * modelR = new G4eBremsstrahlungRelModel(); // rel. version |
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79 | // modelR->SetLPMflag(false); |
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80 | |
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81 | // define energy range and cut |
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82 | const G4int nmax=80; |
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83 | G4double emin=1.e2*MeV; |
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84 | G4double emax=1.e6*MeV; |
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85 | G4double kinEs[nmax+1]; |
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86 | |
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87 | G4double cut=10.*keV; |
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88 | for (int j=0; j<=nmax; ++j) |
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89 | kinEs[j]=exp(G4double(j)/nmax*log(emax/emin))*emin; |
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90 | |
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91 | |
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92 | // writing information to root file |
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93 | // Z , cut, emin, emax |
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94 | G4int currentZ=0; |
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95 | |
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96 | TTree tree("info","info"); |
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97 | tree.Branch("Z",¤tZ,"Z/I"); |
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98 | tree.Branch("cut",&cut,"cut/D"); |
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99 | tree.Branch("emin",&emin,"emin/D"); |
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100 | tree.Branch("emax",&emax,"emax/D"); |
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101 | |
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102 | // setup test materials |
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103 | const G4int nElements=6; |
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104 | G4int theZ[]={1,8,29,47,82,92}; |
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105 | |
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106 | G4Element* els[nElements]; |
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107 | G4Material* mats[nElements]; |
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108 | for (G4int i=0; i<nElements; i++) { |
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109 | G4Element * el = G4NistManager::Instance()->FindOrBuildElement(theZ[i]); |
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110 | std::vector<G4String> names = G4NistManager::Instance()->GetNistMaterialNames(); |
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111 | G4Material* mat = G4NistManager::Instance()->FindOrBuildMaterial(names[theZ[i]-1]); |
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112 | els[i]=el; |
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113 | mats[i]=mat; |
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114 | } |
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115 | |
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116 | |
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117 | // fill plots |
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118 | G4double cross[nmax+1], cross1[nmax+1]; |
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119 | G4double xDEDX[nmax+1], xDEDX1[nmax+1]; |
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120 | |
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121 | for (G4int i=0; i<nElements; i++ ) { |
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122 | currentZ=theZ[i]; |
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123 | tree.Fill(); |
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124 | G4cout<<" Z="<<theZ[i]<<" ("<<mats[i]->GetName()<<","<<els[i]->GetName()<<")"<<G4endl; |
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125 | const G4double* theAtomicNumDensityVector = mats[i]->GetAtomicNumDensityVector(); |
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126 | G4double dndV = 0.0; |
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127 | for (size_t j=0; j<mats[i]->GetNumberOfElements(); j++) |
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128 | dndV += theAtomicNumDensityVector[j]; |
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129 | |
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130 | for (int j=0; j<=nmax; ++j) { |
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131 | |
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132 | modelR->SetupForMaterial(0,mats[i]); |
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133 | modelR->G4VEmModel::SetCurrentElement(els[i]); |
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134 | // cross[j] = |
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135 | // modelR->ComputeCrossSectionPerAtom( G4Electron::Electron(), |
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136 | // kinEs[j], theZ[i], dum, cut)/barn; |
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137 | // cross1[j] = |
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138 | // model1->ComputeCrossSectionPerAtom( G4Electron::Electron(), |
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139 | // kinEs[j], theZ[i], dum, cut)/barn; |
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140 | xDEDX[j]= modelR->ComputeDEDXPerVolume(mats[i], G4Electron::Electron(), kinEs[j], cut)/dndV/barn; |
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141 | xDEDX1[j] = model1->ComputeDEDXPerVolume(mats[i], G4Electron::Electron(), kinEs[j], cut)/dndV/barn; |
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142 | cross[j] = modelR->CrossSectionPerVolume(mats[i], G4Electron::Electron(), kinEs[j], cut, kinEs[j])/dndV/barn; |
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143 | cross1[j] = model1->CrossSectionPerVolume(mats[i], G4Electron::Electron(), kinEs[j], cut, kinEs[j])/dndV/barn; |
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144 | } |
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145 | TGraph gR(nmax,kinEs,cross); |
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146 | gR.Draw("Alp"); |
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147 | gR.SetLineColor(2); |
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148 | gR.GetHistogram()->SetXTitle("E_{kin}"); |
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149 | gR.GetHistogram()->SetYTitle("#sigma(E_{kin})"); |
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150 | gR.Write("modelR"); |
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151 | TGraph g1(nmax,kinEs,cross1); |
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152 | g1.Draw("lp"); |
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153 | g1.SetLineColor(4); |
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154 | gR.GetHistogram()->SetXTitle("E_{kin}"); |
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155 | gR.GetHistogram()->SetYTitle("#sigma(E_{kin})"); |
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156 | g1.Write("model1"); |
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157 | |
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158 | TGraph xR(nmax,kinEs,xDEDX); |
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159 | xR.Draw("Alp"); |
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160 | xR.SetLineColor(2); |
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161 | xR.GetHistogram()->SetXTitle("E_{kin}"); |
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162 | xR.GetHistogram()->SetYTitle("dE/dx"); |
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163 | xR.Write("xDEDXR"); |
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164 | TGraph x1(nmax,kinEs,xDEDX1); |
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165 | x1.Draw("lp"); |
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166 | x1.SetLineColor(4); |
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167 | xR.GetHistogram()->SetXTitle("E_{kin}"); |
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168 | xR.GetHistogram()->SetYTitle("dE/dx"); |
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169 | x1.Write("xDEDX1"); |
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170 | } |
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171 | tree.Write(); |
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172 | } |
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173 | |
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174 | int main(int argc,char** argv) { |
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175 | G4UnitDefinition::BuildUnitsTable(); |
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176 | |
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177 | TFile tree("eBremRel01.root","RECREATE","eBremRel"); |
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178 | |
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179 | // make some tests |
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180 | CalcCrossSection(); |
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181 | |
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182 | tree.Write(); |
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183 | tree.Close(); |
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184 | |
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185 | return 0; |
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186 | } |
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187 | |
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188 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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