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XPrimaryGeneratorAction.cc
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29 // $Id: XPrimaryGeneratorAction.cc 76246 2013-11-08 11:17:29Z gcosmo $
30 //
31 
33 
34 #include "G4Event.hh"
35 #include "G4ParticleGun.hh"
36 #include "G4RandomDirection.hh"
37 
38 #include "G4PhononTransFast.hh"
39 #include "G4PhononTransSlow.hh"
40 #include "G4PhononLong.hh"
41 
42 #include "G4SystemOfUnits.hh"
43 
44 using namespace std;
45 
47 {
48  G4int n_particle = 1;
49  fParticleGun = new G4ParticleGun(n_particle);
50 
51  // default particle kinematic
52  fParticleGun->SetParticleDefinition(G4PhononLong::PhononDefinition());
53  fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
54  fParticleGun->SetParticlePosition(G4ThreeVector(0.0,0.0,0.0));
55  fParticleGun->SetParticleEnergy(1e-4*eV);
56 }
57 
58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
59 
60 
62 {
63  delete fParticleGun;
64 }
65 
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
67 
68 
70 {
71 
72  fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
73 
74  G4double selector = G4UniformRand();
75  if(selector<0.53539) {
76  fParticleGun->SetParticleDefinition(G4PhononTransSlow::PhononDefinition());
77  }
78  else if(selector<0.90217) {
79  fParticleGun->SetParticleDefinition(G4PhononTransFast::PhononDefinition());
80  }
81  else {
82  fParticleGun->SetParticleDefinition(G4PhononLong::PhononDefinition());
83  }
84 
85  //Set phonon energy.
86  //Do not set momentum direction here.
87  //Any momentum direction set here will be overwritten
88  //by XPhononStackingAction::ClassifyNewTrack
89  fParticleGun->SetParticleEnergy(0.0075*eV);
90  fParticleGun->GeneratePrimaryVertex(anEvent);
91 
92 }
93 
94 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
95 
96 
CLHEP::Hep3Vector G4ThreeVector
G4ThreeVector G4RandomDirection()
double G4double
Definition: G4Types.hh:76
virtual void GeneratePrimaries(G4Event *)
#define G4UniformRand()
Definition: Randomize.hh:53
static constexpr double eV
Definition: G4SIunits.hh:215
static G4PhononTransSlow * PhononDefinition()
static G4PhononLong * PhononDefinition()
Definition: G4PhononLong.cc:74
static G4PhononTransFast * PhononDefinition()
int G4int
Definition: G4Types.hh:78
Definition of the XPrimaryGeneratorAction class.