| 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 | // $Id: G4ParametrizedHadronicVertex.cc,v 1.7 2009/03/04 19:09:20 vnivanch Exp $ |
|---|
| 28 | // GEANT4 tag $Name: geant4-09-03-ref-09 $ |
|---|
| 29 | // |
|---|
| 30 | // -------------------------------------------------------------- |
|---|
| 31 | |
|---|
| 32 | #include "G4ParametrizedHadronicVertex.hh" |
|---|
| 33 | #include "G4HadFinalState.hh" |
|---|
| 34 | #include "G4HadProjectile.hh" |
|---|
| 35 | #include "G4LEPionPlusInelastic.hh" |
|---|
| 36 | #include "G4LEPionMinusInelastic.hh" |
|---|
| 37 | #include "G4HEPionPlusInelastic.hh" |
|---|
| 38 | #include "G4HEPionMinusInelastic.hh" |
|---|
| 39 | |
|---|
| 40 | G4ParametrizedHadronicVertex::G4ParametrizedHadronicVertex() |
|---|
| 41 | { |
|---|
| 42 | theLowEPionPlus = new G4LEPionPlusInelastic; |
|---|
| 43 | theLowEPionMinus = new G4LEPionMinusInelastic; |
|---|
| 44 | theHighEPionPlus = new G4HEPionPlusInelastic; |
|---|
| 45 | theHighEPionMinus = new G4HEPionMinusInelastic; |
|---|
| 46 | } |
|---|
| 47 | |
|---|
| 48 | G4ParametrizedHadronicVertex::~G4ParametrizedHadronicVertex() |
|---|
| 49 | {} |
|---|
| 50 | |
|---|
| 51 | G4VParticleChange* |
|---|
| 52 | G4ParametrizedHadronicVertex::ApplyYourself(G4Nucleus & theTarget, |
|---|
| 53 | const G4Track &thePhoton) |
|---|
| 54 | { |
|---|
| 55 | theTotalResult.Clear(); |
|---|
| 56 | theTotalResult.Initialize(thePhoton); |
|---|
| 57 | |
|---|
| 58 | G4double theKineticEnergy = thePhoton.GetKineticEnergy(); |
|---|
| 59 | G4HadFinalState * aR = 0; |
|---|
| 60 | G4HadProjectile thePro(thePhoton); |
|---|
| 61 | if(G4UniformRand() > 0.5) |
|---|
| 62 | { |
|---|
| 63 | if(theKineticEnergy<20*GeV) aR = theLowEPionMinus->ApplyYourself(thePro, theTarget); |
|---|
| 64 | else aR = theHighEPionMinus->ApplyYourself(thePro, theTarget); |
|---|
| 65 | } |
|---|
| 66 | else |
|---|
| 67 | { |
|---|
| 68 | if(theKineticEnergy<20*GeV) aR = theLowEPionPlus->ApplyYourself(thePro, theTarget); |
|---|
| 69 | else aR = theHighEPionPlus->ApplyYourself(thePro, theTarget); |
|---|
| 70 | } |
|---|
| 71 | if(!aR) return &theTotalResult; |
|---|
| 72 | |
|---|
| 73 | aR->SetTrafoToLab(thePro.GetTrafoToLab()); |
|---|
| 74 | |
|---|
| 75 | G4int nsec = aR->GetNumberOfSecondaries(); |
|---|
| 76 | theTotalResult.SetNumberOfSecondaries(nsec); |
|---|
| 77 | |
|---|
| 78 | G4ThreeVector it(0., 0., 1.); |
|---|
| 79 | G4double what = twopi*G4UniformRand(); |
|---|
| 80 | for(G4int i=0; i<nsec; i++) |
|---|
| 81 | { |
|---|
| 82 | G4LorentzVector theM = aR->GetSecondary(i)->GetParticle()->Get4Momentum(); |
|---|
| 83 | theM.rotate(what, it); |
|---|
| 84 | theM*=aR->GetTrafoToLab(); |
|---|
| 85 | aR->GetSecondary(i)->GetParticle()->Set4Momentum(theM); |
|---|
| 86 | G4double time = aR->GetSecondary(i)->GetTime(); |
|---|
| 87 | if(time<0) time = thePhoton.GetGlobalTime(); |
|---|
| 88 | G4Track* track = new G4Track(aR->GetSecondary(i)->GetParticle(), |
|---|
| 89 | thePhoton.GetGlobalTime(), |
|---|
| 90 | thePhoton.GetPosition()); |
|---|
| 91 | G4double newWeight = thePhoton.GetWeight()*aR->GetSecondary(i)->GetWeight(); |
|---|
| 92 | track->SetWeight(newWeight); |
|---|
| 93 | theTotalResult.AddSecondary(track); |
|---|
| 94 | } |
|---|
| 95 | return &theTotalResult; |
|---|
| 96 | } |
|---|
