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10.02.p02
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PrimaryGeneratorAction3.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: PrimaryGeneratorAction3.cc 68024 2013-03-13 13:42:01Z gcosmo $
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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 "
PrimaryGeneratorAction3.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 "
G4ParticleTable.hh
"
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#include "
G4ParticleDefinition.hh
"
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#include "
G4PhysicalConstants.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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PrimaryGeneratorAction3::PrimaryGeneratorAction3
(
G4ParticleGun
* gun)
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: fParticleGun(gun)
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{
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// direction
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//
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G4double
theta = 90*
deg
, phi = 45*
deg
;
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fNewUz
=
G4ThreeVector
(std::sin(theta)*std::cos(phi),
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std::sin(theta)*std::sin(phi),
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std::cos(theta));
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fAlphaMax
= 15*
deg
;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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PrimaryGeneratorAction3::~PrimaryGeneratorAction3
()
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{ }
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void
PrimaryGeneratorAction3::GeneratePrimaries
(
G4Event
* anEvent)
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{
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//particle direction uniform around fNewUz axis
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//
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//1- in World frame
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//cosAlpha uniform in [cos(0), cos(fAlphaMax)]
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G4double
cosAlpha = 1. -
G4UniformRand
()*(1.- std::cos(
fAlphaMax
));
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G4double
sinAlpha = std::sqrt(1. - cosAlpha*cosAlpha);
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G4double
psi =
twopi
*
G4UniformRand
();
//psi uniform in [0, 2*pi]
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G4ThreeVector
dir(sinAlpha*std::cos(psi),sinAlpha*std::sin(psi),cosAlpha);
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//2- rotate dir (rotateUz transforms uz to fNewUz)
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dir.rotateUz(
fNewUz
);
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fParticleGun
->
SetParticleMomentumDirection
(dir);
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//set energy
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//
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fParticleGun
->
SetParticleEnergy
(1*
MeV
);
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//create vertex
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//
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fParticleGun
->
GeneratePrimaryVertex
(anEvent);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
PrimaryGeneratorAction3::fParticleGun
G4ParticleGun * fParticleGun
Definition:
PrimaryGeneratorAction3.hh:64
MeV
static const double MeV
Definition:
G4SIunits.hh:211
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition:
G4ThreeVector.hh:42
PrimaryGeneratorAction3::GeneratePrimaries
void GeneratePrimaries(G4Event *)
Definition:
PrimaryGeneratorAction3.cc:68
G4ParticleGun::SetParticleMomentumDirection
void SetParticleMomentumDirection(G4ParticleMomentum aMomentumDirection)
Definition:
G4ParticleGun.hh:96
G4ParticleGun::GeneratePrimaryVertex
virtual void GeneratePrimaryVertex(G4Event *evt)
Definition:
G4ParticleGun.cc:212
PrimaryGeneratorAction3::PrimaryGeneratorAction3
PrimaryGeneratorAction3(G4ParticleGun *)
Definition:
PrimaryGeneratorAction3.cc:48
G4UniformRand
#define G4UniformRand()
Definition:
Randomize.hh:97
G4ParticleTable.hh
deg
static const double deg
Definition:
G4SIunits.hh:151
PrimaryGeneratorAction3.hh
Definition of the PrimaryGeneratorAction3 class.
twopi
static const double twopi
Definition:
G4SIunits.hh:75
G4ParticleDefinition.hh
Randomize.hh
PrimaryGeneratorAction3::fAlphaMax
G4double fAlphaMax
Definition:
PrimaryGeneratorAction3.hh:62
G4PhysicalConstants.hh
G4ParticleGun::SetParticleEnergy
void SetParticleEnergy(G4double aKineticEnergy)
Definition:
G4ParticleGun.cc:132
G4ParticleGun
Definition:
G4ParticleGun.hh:62
PrimaryGeneratorAction3::fNewUz
G4ThreeVector fNewUz
Definition:
PrimaryGeneratorAction3.hh:58
G4ParticleGun.hh
G4double
double G4double
Definition:
G4Types.hh:76
PrimaryGeneratorAction3::~PrimaryGeneratorAction3
~PrimaryGeneratorAction3()
Definition:
PrimaryGeneratorAction3.cc:63
G4SystemOfUnits.hh
G4Event.hh
G4Event
Definition:
G4Event.hh:52
geant4.10.02.p02
examples
extended
eventgenerator
particleGun
src
PrimaryGeneratorAction3.cc
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