00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // $Id$ 00027 // 00028 // ------------------------------------------------------------------- 00029 // 00030 // GEANT4 Class file 00031 // 00032 // 00033 // File name: G4Generator2BN 00034 // 00035 // Author: Andreia Trindade (andreia@lip.pt) 00036 // Pedro Rodrigues (psilva@lip.pt) 00037 // Luis Peralta (luis@lip.pt) 00038 // 00039 // Creation date: 2 June 2003 00040 // 00041 // Modifications: 00042 // 02 Jun 2003 First implementation acording with new design 00043 // 07 Nov 2003 Lockup tables for fast initialization 00044 // 00045 // 00046 // Class Description: 00047 // 00048 // Concrete class for Bremsstrahlung Angular Distribution Generation - 2BN Distribution 00049 // Further documentation available from http://www.ge.infn.it/geant4/lowE 00050 00051 // ------------------------------------------------------------------- 00052 // 00053 00054 #ifndef G4Generator2BN_h 00055 #define G4Generator2BN_h 1 00056 00057 #include "G4ios.hh" 00058 #include "globals.hh" 00059 #include "G4VEmAngularDistribution.hh" 00060 #include "G4Generator2BS.hh" 00061 00062 class G4Generator2BN : public G4VEmAngularDistribution 00063 { 00064 00065 public: 00066 00067 G4Generator2BN(const G4String& name = ""); 00068 00069 virtual ~G4Generator2BN(); 00070 00071 virtual G4ThreeVector& SampleDirection(const G4DynamicParticle* dp, 00072 G4double out_energy, 00073 G4int Z, 00074 const G4Material* mat = 0); 00075 00076 void PrintGeneratorInformation() const; 00077 00078 public: 00079 00080 void SetInterpolationThetaIncrement(G4double increment) {dtheta = increment;}; 00081 G4double GetInterpolationThetaIncrement() {return dtheta;}; 00082 00083 void SetGammaCutValue(G4double cutValue) {kcut = cutValue;}; 00084 G4double GetGammaCutValue() {return kcut;}; 00085 00086 void ConstructMajorantSurface(); 00087 00088 protected: 00089 00090 G4double CalculateFkt(G4double k, G4double theta, G4double A, G4double c) const; 00091 G4double Calculatedsdkdt(G4double kout, G4double theta, G4double Eel) const; 00092 00093 private: 00094 00095 // hide assignment operator 00096 G4Generator2BN & operator=(const G4Generator2BN &right); 00097 G4Generator2BN(const G4Generator2BN&); 00098 00099 G4Generator2BS fGenerator2BS; 00100 00101 G4double b; 00102 G4int index_min, index_max; 00103 G4double kmin, Ekmin; 00104 G4double dtheta; 00105 G4double kcut; 00106 static G4double Atab[320]; 00107 static G4double ctab[320]; 00108 00109 G4int nwarn; 00110 00111 }; 00112 00113 #endif 00114