source: trunk/examples/novice/N04/src/ExN04PrimaryGeneratorAction.cc@ 1184

Last change on this file since 1184 was 807, checked in by garnier, 17 years ago

update

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[807]1//
2// ********************************************************************
3// * License and Disclaimer *
4// * *
5// * The Geant4 software is copyright of the Copyright Holders of *
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15// * use. Please see the license in the file LICENSE and URL above *
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24// ********************************************************************
25//
26
27#include "ExN04PrimaryGeneratorAction.hh"
28
29#include "G4Event.hh"
30#include "G4HEPEvtInterface.hh"
31#include "G4ParticleGun.hh"
32#include "G4ParticleTable.hh"
33#include "G4ParticleDefinition.hh"
34#include "ExN04PrimaryGeneratorMessenger.hh"
35
36ExN04PrimaryGeneratorAction::ExN04PrimaryGeneratorAction()
37{
38 const char* filename = "pythia_event.data";
39 HEPEvt = new G4HEPEvtInterface(filename);
40
41 G4int n_particle = 1;
42 G4ParticleGun* fParticleGun = new G4ParticleGun(n_particle);
43 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
44 G4String particleName;
45 G4ParticleDefinition* particle
46 = particleTable->FindParticle(particleName="mu+");
47 fParticleGun->SetParticleDefinition(particle);
48 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,1.,0.));
49 fParticleGun->SetParticleEnergy(100.*GeV);
50 fParticleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm));
51 particleGun = fParticleGun;
52
53 messenger = new ExN04PrimaryGeneratorMessenger(this);
54 useHEPEvt = true;
55}
56
57ExN04PrimaryGeneratorAction::~ExN04PrimaryGeneratorAction()
58{
59 delete HEPEvt;
60 delete particleGun;
61 delete messenger;
62}
63
64void ExN04PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
65{
66 if(useHEPEvt)
67 { HEPEvt->GeneratePrimaryVertex(anEvent); }
68 else
69 { particleGun->GeneratePrimaryVertex(anEvent); }
70}
71
72
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