| 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 "G4Gamma.hh" |
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| 28 | #include "G4Element.hh" |
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| 29 | #include "G4PhotoNuclearCrossSection.hh" |
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| 30 | |
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| 31 | int main() |
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| 32 | { |
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| 33 | G4PhotoNuclearCrossSection gammaACrossSection; |
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| 34 | const G4int nN=6; // A#of plots (nuclei in the test) |
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| 35 | const G4int nC=227; // A#of points in the plots (energy values) |
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| 36 | ofstream fileH1("h1.out", ios::out); |
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| 37 | fileH1.setf( ios::scientific, ios::floatfield ); |
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| 38 | ofstream fileH2("h2.out", ios::out); |
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| 39 | fileH2.setf( ios::scientific, ios::floatfield ); |
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| 40 | ofstream fileC12("c12.out", ios::out); |
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| 41 | fileC12.setf( ios::scientific, ios::floatfield ); |
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| 42 | ofstream fileAl27("al27.out", ios::out); |
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| 43 | fileAl27.setf( ios::scientific, ios::floatfield ); |
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| 44 | ofstream fileCu("cu.out", ios::out); |
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| 45 | fileCu.setf( ios::scientific, ios::floatfield ); |
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| 46 | ofstream filePb("pb.out", ios::out); |
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| 47 | filePb.setf( ios::scientific, ios::floatfield ); |
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| 48 | G4double low[nN]={137. , 2.22, 12.5 , 8.3 , 7. , 7.35 }; |
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| 49 | G4double high[nN]={4.e7, 4.e7, 4.e7, 4.e7, 4.e7, 4.e7}; |
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| 50 | G4Element* theElement[nN]={new G4Element("Hydrogen", "H", 1, 1.*g/mole), |
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| 51 | new G4Element("Deuterium", "D", 1, 2.*g/mole), |
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| 52 | new G4Element("Carbon", "C", 6, 12.*g/mole), |
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| 53 | new G4Element("Aluminum", "Al", 13, 27.*g/mole), |
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| 54 | new G4Element("Copper", "Cu", 29, 64.*g/mole), |
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| 55 | new G4Element("Lead", "Pb", 82, 208.*g/mole)}; |
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| 56 | G4ParticleDefinition* theParticleDefinition = G4Gamma::GammaDefinition(); |
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| 57 | //G4VProcess* theProcess = new G4PhotonInelasticProcess("Inelastic"); // @@ Make it?! |
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| 58 | G4DynamicParticle* theDynamicParticle; |
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| 59 | G4double sig=0.; |
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| 60 | for(G4int n=0; n<6; n++) |
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| 61 | { |
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| 62 | G4double lekin = std::log(low[n]); |
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| 63 | G4double dlekin= std::exp((std::log(std::log(high[n]))-std::log(lekin))/(nC-1)); |
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| 64 | lekin /= dlekin; |
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| 65 | //G4cout<<"n="<<n<<", low="<<low[n]<<", high="<<high[n]<<", np="<<nC<<", d="<<dlekin<<G4endl; |
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| 66 | for(G4int ll=0; ll<nC; ll++) |
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| 67 | { |
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| 68 | lekin*=dlekin; |
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| 69 | G4double ekin=std::exp(lekin); |
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| 70 | theDynamicParticle = new G4DynamicParticle(theParticleDefinition, |
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| 71 | G4ParticleMomentum(1.,0.,0.), ekin*MeV); |
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| 72 | sig = gammaACrossSection.GetCrossSection(theDynamicParticle,theElement[n])/millibarn; |
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| 73 | delete theDynamicParticle; |
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| 74 | //G4cout<<"n="<<n<<", e="<<ekin<<", sigma="<<sig<<G4endl; |
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| 75 | if(!n) fileH1<<ekin<<" "<<sig<<G4endl; |
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| 76 | else if(n==1) fileH2<<ekin<<" "<<sig<<G4endl; |
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| 77 | else if(n==2) fileC12<<ekin<<" "<<sig<<G4endl; |
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| 78 | else if(n==3) fileAl27<<ekin<<" "<<sig<<G4endl; |
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| 79 | else if(n==4) fileCu<<ekin<<" "<<sig<<G4endl; |
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| 80 | else if(n==5) filePb<<ekin<<" "<<sig<<G4endl; |
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| 81 | } // End of the point LOOP |
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| 82 | } // End of the plot LOOP |
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| 83 | return EXIT_SUCCESS; |
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| 84 | } |
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