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1 // 2 // ******************************************************************** 3 // * License and Disclaimer * 4 // * * 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. * 10 // * * 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitation of liability. * 17 // * * 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************************************** 25 // 26 // 27 // ------------------------------------------------------------------- 28 // 29 // GEANT4 Class header file 30 // 31 // 32 // File name: G4ee2KChargedModel 33 // 34 // Author: Vladimir Ivanchenko 35 // 36 // Creation date: 09.07.2008 37 // 38 // Modifications: 39 // 40 // 41 // ------------------------------------------------------------------- 42 // 43 44 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 47 48 #include "G4ee2KChargedModel.hh" 49 #include "Randomize.hh" 50 #include "G4PhysicalConstants.hh" 51 #include "G4SystemOfUnits.hh" 52 #include "G4KaonPlus.hh" 53 #include "G4KaonMinus.hh" 54 #include "G4DynamicParticle.hh" 55 #include "G4PhysicsVector.hh" 56 #include "G4PhysicsLinearVector.hh" 57 #include "G4eeCrossSections.hh" 58 59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 60 61 using namespace std; 62 63 G4ee2KChargedModel::G4ee2KChargedModel(G4eeCrossSections* cr, 64 G4double maxkinEnergy, 65 G4double binWidth) 66 : G4Vee2hadrons(cr, 67 2.0*G4KaonPlus::KaonPlus()->GetPDGMass(), 68 maxkinEnergy, 69 binWidth) 70 { 71 G4cout << "####G4ee2KChargedModel####" << G4endl; 72 73 massK = G4KaonPlus::KaonPlus()->GetPDGMass(); 74 massPhi = 1019.46*MeV; 75 } 76 77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 78 79 G4ee2KChargedModel::~G4ee2KChargedModel() 80 {} 81 82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 83 84 G4double G4ee2KChargedModel::PeakEnergy() const 85 { 86 return massPhi; 87 } 88 89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 90 91 G4double G4ee2KChargedModel::ComputeCrossSection(G4double e) const 92 { 93 return cross->CrossSection2Kcharged(e); 94 } 95 96 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 97 98 void G4ee2KChargedModel::SampleSecondaries(std::vector<G4DynamicParticle*>* newp, 99 G4double e, const G4ThreeVector& direction) 100 { 101 102 G4double tkin = 0.5*e - massK; 103 if(tkin < 0.0) tkin = 0.0; 104 105 G4double cost; 106 do { 107 cost = 2.0*G4UniformRand() - 1.0; 108 // Loop checking, 07-Aug-2015, Vladimir Ivanchenko 109 } while( G4UniformRand() > 1.0 - cost*cost ); 110 111 G4double sint = sqrt(1.0 - cost*cost); 112 G4double phi = twopi * G4UniformRand(); 113 114 G4ThreeVector dir(sint*cos(phi),sint*sin(phi), cost); 115 dir.rotateUz(direction); 116 117 // create G4DynamicParticle objects 118 G4DynamicParticle* p1 = 119 new G4DynamicParticle(G4KaonPlus::KaonPlus(),dir,tkin); 120 G4DynamicParticle* p2 = 121 new G4DynamicParticle(G4KaonMinus::KaonMinus(),-dir,tkin); 122 newp->push_back(p1); 123 newp->push_back(p2); 124 } 125 126 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 127 128