include/Geant4/G4RiGeAngularGenerator.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:  G4RiGeAngularGenerator
0033 //
0034 // Authors:       Girardo Depaola & Ricardo Pacheco
0035 //
0036 // Creation date: 29 October 2024
0037 //
0038 // -------------------------------------------------------------------
0039 //
0040
0041 #ifndef G4RiGeAngularGenerator_h
0042 #define G4RiGeAngularGenerator_h 1
0043
0044 #include "G4ios.hh"
0045 #include "globals.hh"
0046 #include "G4VEmAngularDistribution.hh"
0047 #include "G4LorentzVector.hh"
0048
0049 class G4RiGeAngularGenerator : public G4VEmAngularDistribution
0050 {
0051
0052 public:
0053
0054   G4RiGeAngularGenerator();
0055
0056   ~G4RiGeAngularGenerator() override = default;
0057
0058   G4ThreeVector& SampleDirection(const G4DynamicParticle* dp,
0059                                  G4double gEnergy, G4int Z,
0060                                  const G4Material* mat = nullptr) override;
0061
0062   G4LorentzVector Sample5DPairDirections(const G4DynamicParticle* dp,
0063                                  G4ThreeVector& dirElectron,
0064                                  G4ThreeVector& dirPositron,
0065                                  const G4double gEnergy, const G4double q2,
0066                                  const G4double gMomentum,
0067                                  G4double muFinalMomentum,
0068                                  G4double muFinalEnergy,
0069                                  const G4double* randNumbs,
0070                                  const G4double* W);
0071
0072   void PhiRotation(G4ThreeVector& dir, G4double phi);
0073
0074   G4LorentzVector eDP2(G4double x1, G4double x2, G4double x3, G4double x4, G4double x5);
0075
0076   G4LorentzVector pDP2(G4double x3, const G4LorentzVector& x6);
0077
0078   void PrintGeneratorInformation() const override;
0079
0080   // hide assignment operator
0081   G4RiGeAngularGenerator& operator=(const G4RiGeAngularGenerator& right) = delete;
0082   G4RiGeAngularGenerator(const G4RiGeAngularGenerator&) = delete;
0083
0084 private:
0085
0086   G4double SampleCosTheta(G4double primKinEnergy, G4double gEnergy, G4double mass);
0087
0088 };
0089
0090 #endif
0091