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geant4.10.00.p01
examples
extended
eventgenerator
particleGun
src
PrimaryGeneratorAction3.cc
Go to the documentation of this file.
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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/// \file eventgenerator/particleGun/src/PrimaryGeneratorAction3.cc
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/// \brief Implementation of the PrimaryGeneratorAction3 class
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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......
CLHEP::Hep3Vector
Definition:
ThreeVector.h:41
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition:
G4ThreeVector.hh:42
python.hepunit.MeV
MeV
Definition:
hepunit.py:117
PrimaryGeneratorAction3::GeneratePrimaries
void GeneratePrimaries(G4Event *)
Definition:
PrimaryGeneratorAction3.cc:68
python.hepunit.twopi
int twopi
Definition:
hepunit.py:248
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:87
G4ParticleTable.hh
PrimaryGeneratorAction3.hh
Definition of the PrimaryGeneratorAction3 class.
CLHEP::Hep3Vector::rotateUz
Hep3Vector & rotateUz(const Hep3Vector &)
Definition:
ThreeVector.cc:72
G4ParticleDefinition.hh
Randomize.hh
G4PhysicalConstants.hh
python.hepunit.deg
deg
Definition:
hepunit.py:77
G4ParticleGun::SetParticleEnergy
void SetParticleEnergy(G4double aKineticEnergy)
Definition:
G4ParticleGun.cc:132
G4ParticleGun
Definition:
G4ParticleGun.hh:62
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
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