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 | #include "G4ios.hh" |
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27 | #include "G4Electron.hh" |
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28 | #include "G4Element.hh" |
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29 | #include "G4ElectroNuclearCrossSection.hh" |
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30 | |
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31 | int main() |
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32 | { |
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33 | G4ElectroNuclearCrossSection eACrossSection; |
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34 | const G4int nN=6; // A#of plots (nuclei in the test) |
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35 | ofstream file0("h1_epl.out", ios::out); |
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36 | file0.setf( ios::scientific, ios::floatfield ); |
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37 | ofstream file1("h1_eph.out", ios::out); |
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38 | file1.setf( ios::scientific, ios::floatfield ); |
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39 | ofstream file2("cu_epl.out", ios::out); |
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40 | file2.setf( ios::scientific, ios::floatfield ); |
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41 | ofstream file3("cu_eph.out", ios::out); |
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42 | file3.setf( ios::scientific, ios::floatfield ); |
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43 | G4Element* theElement[nN]={new G4Element("Hydrogen", "H", 1, 1.*g/mole), |
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44 | new G4Element("Deuterium", "D", 1, 2.*g/mole), |
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45 | new G4Element("Carbon", "C", 6, 12.*g/mole), |
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46 | new G4Element("Aluminum", "Al", 13, 27.*g/mole), |
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47 | new G4Element("Copper", "Cu", 29, 64.*g/mole), |
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48 | new G4Element("Lead", "Pb", 82, 208.*g/mole)}; |
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49 | G4ParticleDefinition* theParticleDefinition = G4Electron::ElectronDefinition(); |
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50 | G4DynamicParticle* theDynamicParticle; |
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51 | for(G4int n=0; n<4; n++) |
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52 | { |
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53 | G4double ekin=1000.; |
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54 | if(n==3) ekin=10000.; |
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55 | else if(n==1) ekin=10000000.; |
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56 | G4int nel=0; |
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57 | if(n>1) nel=3; |
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58 | theDynamicParticle = new G4DynamicParticle(theParticleDefinition, |
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59 | G4ParticleMomentum(1.,0.,0.), ekin*MeV); |
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60 | G4double sig = eACrossSection.GetCrossSection(theDynamicParticle,theElement[nel])/millibarn; |
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61 | G4cout<<"n="<<n<<", Cross Section="<<sig<<G4endl; |
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62 | delete theDynamicParticle; |
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63 | G4int prob[100]; |
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64 | for(G4int k=0; k<100; k++) prob[k]=0; |
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65 | for(G4int i=0; i<10000000; i++) |
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66 | { |
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67 | G4double phe=eACrossSection.GetEffectivePhotonEnergy(); |
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68 | //if(phe<100.)G4Exception("Too low photon energy"); |
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69 | G4int ind=static_cast<int>(phe/10.); |
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70 | if(n==3) ind/=10; |
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71 | else if(n==1) ind/=10000; |
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72 | prob[ind]++; |
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73 | if(!(i%1000000)) G4cout<<i<<" equivalent photons are generated"<<G4endl; |
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74 | } |
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75 | //G4cout<<"Now printing"<<G4endl; |
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76 | for(G4int j=0; j<100; j++) |
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77 | { |
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78 | //G4cout<<"j="<<j<<G4endl; |
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79 | if (!n) file0<<j*10 <<" "<<prob[j]<<G4endl; |
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80 | else if(n==1) file1<<j*100000<<" "<<prob[j]<<G4endl; |
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81 | else if(n==2) file2<<j*10 <<" "<<prob[j]<<G4endl; |
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82 | else if(n==3) file3<<j*100 <<" "<<prob[j]<<G4endl; |
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83 | } |
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84 | } |
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85 | return EXIT_SUCCESS; |
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86 | } |
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87 | |
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88 | |
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89 | |
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90 | |
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91 | |
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92 | |
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