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10.02.p01
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PrimaryGeneratorAction0.cc
Go to the documentation of this file.
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//
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// ********************************************************************
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// * Neither the authors of this software system, nor their employing *
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// ********************************************************************
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//
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//
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//
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// $Id: PrimaryGeneratorAction0.cc 83872 2014-09-20 22:23:50Z maire $
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//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#include "
PrimaryGeneratorAction0.hh
"
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#include "PrimaryGeneratorAction.hh"
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#include "
G4Event.hh
"
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#include "
G4ParticleGun.hh
"
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#include "
G4SystemOfUnits.hh
"
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#include "
Randomize.hh
"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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PrimaryGeneratorAction0::PrimaryGeneratorAction0
(
G4ParticleGun
* gun)
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: fParticleGun(gun)
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{
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//solid angle
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//
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G4double
alphaMin = 0*
deg
;
//alpha in [0,pi]
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G4double
alphaMax = 60*
deg
;
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fCosAlphaMin
= std::cos(alphaMin);
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fCosAlphaMax
= std::cos(alphaMax);
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fPsiMin
= 0*
deg
;
//psi in [0, 2*pi]
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fPsiMax
= 360*
deg
;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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PrimaryGeneratorAction0::~PrimaryGeneratorAction0
()
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{ }
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void
PrimaryGeneratorAction0::GeneratePrimaries
(
G4Event
* anEvent)
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{
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//vertex position fixed
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//
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G4double
x0 = 0*
mm
, y0 = 0*
mm
,
z0
= 0*
mm
;
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fParticleGun
->
SetParticlePosition
(
G4ThreeVector
(x0,y0,z0));
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//direction uniform in solid angle
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//
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G4double
cosAlpha =
fCosAlphaMin
-
G4UniformRand
()*(
fCosAlphaMin
-
fCosAlphaMax
);
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G4double
sinAlpha = std::sqrt(1. - cosAlpha*cosAlpha);
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G4double
psi =
fPsiMin
+
G4UniformRand
()*(
fPsiMax
-
fPsiMin
);
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G4double
ux = sinAlpha*std::cos(psi),
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uy = sinAlpha*std::sin(psi),
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uz = cosAlpha;
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fParticleGun
->
SetParticleMomentumDirection
(
G4ThreeVector
(ux,uy,uz));
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fParticleGun
->
GeneratePrimaryVertex
(anEvent);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
PrimaryGeneratorAction0::fPsiMax
G4double fPsiMax
Definition:
PrimaryGeneratorAction0.hh:57
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition:
G4ThreeVector.hh:42
PrimaryGeneratorAction0::fCosAlphaMax
G4double fCosAlphaMax
Definition:
PrimaryGeneratorAction0.hh:56
PrimaryGeneratorAction0::fCosAlphaMin
G4double fCosAlphaMin
Definition:
PrimaryGeneratorAction0.hh:56
G4ParticleGun::SetParticleMomentumDirection
void SetParticleMomentumDirection(G4ParticleMomentum aMomentumDirection)
Definition:
G4ParticleGun.hh:96
G4ParticleGun::GeneratePrimaryVertex
virtual void GeneratePrimaryVertex(G4Event *evt)
Definition:
G4ParticleGun.cc:212
PrimaryGeneratorAction0::GeneratePrimaries
void GeneratePrimaries(G4Event *)
Definition:
PrimaryGeneratorAction0.cc:66
G4VPrimaryGenerator::SetParticlePosition
void SetParticlePosition(G4ThreeVector aPosition)
Definition:
G4VPrimaryGenerator.hh:69
PrimaryGeneratorAction0::fParticleGun
G4ParticleGun * fParticleGun
Definition:
PrimaryGeneratorAction0.hh:60
G4UniformRand
#define G4UniformRand()
Definition:
Randomize.hh:97
deg
static const double deg
Definition:
G4SIunits.hh:151
Randomize.hh
PrimaryGeneratorAction0::PrimaryGeneratorAction0
PrimaryGeneratorAction0(G4ParticleGun *)
Definition:
PrimaryGeneratorAction0.cc:45
G4InuclParticleNames::z0
Definition:
G4InuclParticleNames.hh:70
PrimaryGeneratorAction0::~PrimaryGeneratorAction0
~PrimaryGeneratorAction0()
Definition:
PrimaryGeneratorAction0.cc:61
G4ParticleGun
Definition:
G4ParticleGun.hh:62
PrimaryGeneratorAction0.hh
Definition of the PrimaryGeneratorAction0 class.
G4ParticleGun.hh
G4double
double G4double
Definition:
G4Types.hh:76
G4SystemOfUnits.hh
G4Event.hh
mm
static const double mm
Definition:
G4SIunits.hh:114
G4Event
Definition:
G4Event.hh:52
PrimaryGeneratorAction0::fPsiMin
G4double fPsiMin
Definition:
PrimaryGeneratorAction0.hh:57
geant4.10.02.p01
examples
extended
eventgenerator
particleGun
src
PrimaryGeneratorAction0.cc
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