[1199] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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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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| 22 | // * use in resulting scientific publications, and indicate your * |
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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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[1315] | 27 | // GEANT4 tag $Name: geant4-09-04-beta-cand-01 $ |
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[1199] | 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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