Geant4  10.03.p02
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G4BlinePrimaryGeneratorAction.cc
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30 // $Id: G4BlinePrimaryGeneratorAction.cc 68021 2013-03-13 13:36:07Z gcosmo $
31 //
32 //
33 // --------------------------------------------------------------------
34 //
35 // G4BlinePrimaryGeneratorAction implementation
36 //
37 // --------------------------------------------------------------------
38 // Author: Laurent Desorgher (desorgher@phim.unibe.ch)
39 // Created - 2003-10-06
40 // --------------------------------------------------------------------
41 
43 
44 #include "G4Types.hh"
45 #include "G4Event.hh"
46 #include "G4ChargedGeantino.hh"
47 #include "G4SystemOfUnits.hh"
48 
50 
52 {
53  fUserPrimaryAction = 0;
54  fFirstPartOfBline = true;
55 }
56 
58 
60 {
61 }
62 
64 
66 {
67  if (!fUserPrimaryAction)
68  {
69  G4Exception("G4BlinePrimaryGeneratorAction::GeneratePrimaries()",
70  "NullPointer", JustWarning,
71  "Primary generator action not defined !");
72  return;
73  }
74 
75  // For the first part of a bline the start position and time are defined
76  // by using the USER primary action while for the second part the previous
77  // values are taken.
78 
79  if (fFirstPartOfBline)
80  {
81  // set the position and time defined by using the USER primary action
82 
83  G4Event* tmpEvent = new G4Event();
84  fUserPrimaryAction->GeneratePrimaries(tmpEvent);
85  fBlineStartPosition = tmpEvent->GetPrimaryVertex()->GetPosition();
86  fT0 = tmpEvent->GetPrimaryVertex()->GetT0();
87  delete tmpEvent;
88  }
89  fFirstPartOfBline = false;
90 
91  G4PrimaryVertex* primary_vertex =
92  new G4PrimaryVertex(fBlineStartPosition, fT0);
93 
94  // Define the particle to be tracked as Charged Geantino
95 
97 
98  G4double mass = pdef->GetPDGMass();
99  G4double energy = 10000.*MeV + mass;
100  G4double pmom = std::sqrt(energy*energy-mass*mass);
101 
102  // The momentum direction and energy do not have an effect in tracing of
103  // bline but still need to be defined.
104 
105  G4double px = 0.;
106  G4double py = 0.;
107  G4double pz = pmom;
108 
109  G4PrimaryParticle* particle = new G4PrimaryParticle(pdef,px,py,pz);
110  particle->SetMass( mass );
111  particle->SetCharge(pdef->GetPDGCharge());
112  primary_vertex->SetPrimary( particle );
113 
114  anEvent->AddPrimaryVertex( primary_vertex );
115 }
G4ThreeVector GetPosition() const
void AddPrimaryVertex(G4PrimaryVertex *aPrimaryVertex)
Definition: G4Event.hh:154
static G4ChargedGeantino * ChargedGeantino()
G4double GetT0() const
void SetMass(G4double mas)
G4PrimaryVertex * GetPrimaryVertex(G4int i=0) const
Definition: G4Event.hh:167
Definition of the G4BlinePrimaryGeneratorAction class.
void G4Exception(const char *originOfException, const char *exceptionCode, G4ExceptionSeverity severity, const char *comments)
Definition: G4Exception.cc:41
virtual void GeneratePrimaries(G4Event *anEvent)=0
G4double GetPDGMass() const
G4double energy(const ThreeVector &p, const G4double m)
void SetCharge(G4double chg)
void SetPrimary(G4PrimaryParticle *pp)
static constexpr double MeV
Definition: G4SIunits.hh:214
virtual void GeneratePrimaries(G4Event *anEvent)
double G4double
Definition: G4Types.hh:76
G4double GetPDGCharge() const