Geant4  10.03.p02
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CexmcPrimaryGeneratorAction.cc
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26 /*
27  * =============================================================================
28  *
29  * Filename: CexmcPrimaryGeneratorAction.cc
30  *
31  * Description: primary particle position, direction, energy etc.
32  *
33  * Version: 1.0
34  * Created: 11.10.2009 14:43:03
35  * Revision: none
36  * Compiler: gcc
37  *
38  * Author: Alexey Radkov (),
39  * Company: PNPI
40  *
41  * =============================================================================
42  */
43 
44 #include <G4Event.hh>
45 #include <G4ParticleTable.hh>
46 #include <globals.hh>
47 #include <Randomize.hh>
50 #include "CexmcParticleGun.hh"
51 #include "CexmcCommon.hh"
52 
53 
55  CexmcPhysicsManager * physicsManager ) :
56  particleGun( NULL ), fwhmPosX( 0 ), fwhmPosY( 0 ), fwhmDirX( 0 ),
57  fwhmDirY( 0 ), messenger( NULL )
58 {
59  particleGun = new CexmcParticleGun( physicsManager );
60  messenger = new CexmcPrimaryGeneratorActionMessenger( this );
61 }
62 
63 
65 {
66  delete particleGun;
67  delete messenger;
68 }
69 
70 
72 {
73  particleGun->PrepareForNewEvent();
74 
75  const G4ThreeVector & origPos( particleGun->GetOrigPosition() );
76  const G4ThreeVector & origDir( particleGun->GetOrigDirection() );
77  G4double origMomentumAmp( particleGun->GetOrigMomentumAmp() );
78 
79  G4double randPosX( G4RandGauss::shoot( origPos.x(),
80  fwhmPosX * CexmcFwhmToStddev ) );
81  G4double randPosY( G4RandGauss::shoot( origPos.y(),
82  fwhmPosY * CexmcFwhmToStddev ) );
83  G4ThreeVector newPos( randPosX, randPosY, origPos.z() );
84 
85  G4double randAngleX( G4RandGauss::shoot( origDir.x(),
86  fwhmDirX * CexmcFwhmToStddev ) );
87  G4double randAngleY( G4RandGauss::shoot( origDir.y(),
88  fwhmDirY * CexmcFwhmToStddev ) );
89  G4ThreeVector newAngle( randAngleX, randAngleY, origDir.z() );
90 
91  G4double newMomentumAmp( G4RandGauss::shoot( origMomentumAmp,
92  fwhmMomentumAmp * origMomentumAmp *
94 
95  particleGun->SetParticlePosition( newPos );
96  particleGun->SetParticleMomentumDirection( newAngle );
97  particleGun->SetParticleMomentum( newMomentumAmp );
98 
99  particleGun->GeneratePrimaryVertex( event );
100 }
101 
102 
104 {
105  return particleGun;
106 }
107 
ThreeVector shoot(const G4int Ap, const G4int Af)
void SetParticleMomentum(G4double aMomentum)
const G4ThreeVector & GetOrigPosition(void) const
G4double GetOrigMomentumAmp(void) const
void SetParticleMomentumDirection(G4ParticleMomentum aMomentumDirection)
virtual void GeneratePrimaryVertex(G4Event *evt)
CexmcPrimaryGeneratorAction(CexmcPhysicsManager *physicsManager)
void SetParticlePosition(G4ThreeVector aPosition)
void PrepareForNewEvent(void)
const G4double CexmcFwhmToStddev(0.42466)
double G4double
Definition: G4Types.hh:76
const G4ThreeVector & GetOrigDirection(void) const