| 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 | // G4AntiProtonAnnihilationAtRest physics process |
|---|
| 27 | // Larry Felawka (TRIUMF), April 1998 |
|---|
| 28 | //--------------------------------------------------------------------- |
|---|
| 29 | |
|---|
| 30 | #ifndef G4AntiProtonAnnihilationAtRest_h |
|---|
| 31 | #define G4AntiProtonAnnihilationAtRest_h 1 |
|---|
| 32 | |
|---|
| 33 | // Class Description: |
|---|
| 34 | // |
|---|
| 35 | // Process for annihilation of p-bar at rest. |
|---|
| 36 | // To be used in your physics list in case you need this physics. |
|---|
| 37 | |
|---|
| 38 | #include "globals.hh" |
|---|
| 39 | #include "Randomize.hh" |
|---|
| 40 | #include "G4VRestProcess.hh" |
|---|
| 41 | #include "G4VParticleChange.hh" |
|---|
| 42 | #include "G4ParticleDefinition.hh" |
|---|
| 43 | #include "G4GHEKinematicsVector.hh" |
|---|
| 44 | #include "G4HadronicProcessType.hh" |
|---|
| 45 | |
|---|
| 46 | class G4AntiProtonAnnihilationAtRest : public G4VRestProcess |
|---|
| 47 | |
|---|
| 48 | { |
|---|
| 49 | private: |
|---|
| 50 | // hide assignment operator as private |
|---|
| 51 | G4AntiProtonAnnihilationAtRest& operator=(const G4AntiProtonAnnihilationAtRest &right); |
|---|
| 52 | G4AntiProtonAnnihilationAtRest(const G4AntiProtonAnnihilationAtRest& ); |
|---|
| 53 | |
|---|
| 54 | public: |
|---|
| 55 | |
|---|
| 56 | G4AntiProtonAnnihilationAtRest(const G4String& processName ="AntiProtonAnnihilationAtRest", |
|---|
| 57 | G4ProcessType aType = fHadronic ); |
|---|
| 58 | |
|---|
| 59 | ~G4AntiProtonAnnihilationAtRest(); |
|---|
| 60 | |
|---|
| 61 | G4bool IsApplicable(const G4ParticleDefinition&); |
|---|
| 62 | |
|---|
| 63 | void PreparePhysicsTable(const G4ParticleDefinition&); |
|---|
| 64 | |
|---|
| 65 | void BuildPhysicsTable(const G4ParticleDefinition&); |
|---|
| 66 | |
|---|
| 67 | G4double AtRestGetPhysicalInteractionLength(const G4Track&, |
|---|
| 68 | G4ForceCondition*); |
|---|
| 69 | |
|---|
| 70 | // zero mean lifetime |
|---|
| 71 | G4double GetMeanLifeTime(const G4Track& , |
|---|
| 72 | G4ForceCondition* ) {return 0.0;} |
|---|
| 73 | |
|---|
| 74 | G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&); |
|---|
| 75 | |
|---|
| 76 | // return number of secondaries produced |
|---|
| 77 | G4int GetNumberOfSecondaries(); |
|---|
| 78 | |
|---|
| 79 | // pointer to array containg kinematics of secondaries |
|---|
| 80 | G4GHEKinematicsVector* GetSecondaryKinematics(); |
|---|
| 81 | |
|---|
| 82 | private: |
|---|
| 83 | |
|---|
| 84 | void GenerateSecondaries(); |
|---|
| 85 | void Poisso( G4float, G4int* ); |
|---|
| 86 | void Normal( G4float* ); |
|---|
| 87 | void AntiProtonAnnihilation( G4int* ); |
|---|
| 88 | G4double ExNu( G4float ); |
|---|
| 89 | G4int NFac( G4int ); |
|---|
| 90 | |
|---|
| 91 | private: |
|---|
| 92 | |
|---|
| 93 | // global time-of-flight of stopped AntiProton |
|---|
| 94 | G4float globalTime; |
|---|
| 95 | |
|---|
| 96 | // atomic mass of target nucleus |
|---|
| 97 | G4float targetAtomicMass; |
|---|
| 98 | |
|---|
| 99 | // charge of target nucleus |
|---|
| 100 | G4float targetCharge; |
|---|
| 101 | |
|---|
| 102 | G4GHEKinematicsVector* pv; |
|---|
| 103 | G4GHEKinematicsVector* eve; |
|---|
| 104 | G4GHEKinematicsVector* gkin; |
|---|
| 105 | |
|---|
| 106 | G4float evapEnergy1; |
|---|
| 107 | G4float evapEnergy3; |
|---|
| 108 | |
|---|
| 109 | G4int ngkine; |
|---|
| 110 | |
|---|
| 111 | G4int ntot; |
|---|
| 112 | G4GHEKinematicsVector result; |
|---|
| 113 | |
|---|
| 114 | G4float massPionMinus; |
|---|
| 115 | G4float massProton; |
|---|
| 116 | G4float massPionZero; |
|---|
| 117 | G4float massAntiProton; |
|---|
| 118 | G4float massPionPlus; |
|---|
| 119 | G4float massGamma; |
|---|
| 120 | |
|---|
| 121 | G4ParticleDefinition* pdefGamma; |
|---|
| 122 | G4ParticleDefinition* pdefPionPlus; |
|---|
| 123 | G4ParticleDefinition* pdefPionZero; |
|---|
| 124 | G4ParticleDefinition* pdefPionMinus; |
|---|
| 125 | G4ParticleDefinition* pdefProton; |
|---|
| 126 | G4ParticleDefinition* pdefAntiProton; |
|---|
| 127 | G4ParticleDefinition* pdefNeutron; |
|---|
| 128 | G4ParticleDefinition* pdefDeuteron; |
|---|
| 129 | G4ParticleDefinition* pdefTriton; |
|---|
| 130 | G4ParticleDefinition* pdefAlpha; |
|---|
| 131 | |
|---|
| 132 | }; |
|---|
| 133 | |
|---|
| 134 | #endif |
|---|
| 135 | |
|---|
