Gabriele Cosmo
138 lines
5.3 KiB
C++
138 lines
5.3 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
/// \file PrimaryGeneratorAction.cc
|
|
/// \brief Implementation of the PrimaryGeneratorAction class
|
|
//
|
|
//
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
#include "PrimaryGeneratorAction.hh"
|
|
|
|
#include "G4GenericMessenger.hh"
|
|
#include "DetectorConstruction.hh"
|
|
#include "HistoManager.hh"
|
|
|
|
#include "G4Event.hh"
|
|
#include "G4ParticleGun.hh"
|
|
#include "G4ParticleTable.hh"
|
|
#include "G4ParticleDefinition.hh"
|
|
#include "G4SystemOfUnits.hh"
|
|
#include "Randomize.hh"
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* det)
|
|
:G4VUserPrimaryGeneratorAction(),
|
|
fParticleGun(nullptr),
|
|
fDetector(det),
|
|
fMessenger(nullptr),
|
|
fRndmBeam(0.)
|
|
|
|
{
|
|
G4int n_particle = 1;
|
|
fParticleGun = new G4ParticleGun(n_particle);
|
|
SetDefaultKinematic();
|
|
|
|
// define commands for this class
|
|
DefineCommands();
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
PrimaryGeneratorAction::~PrimaryGeneratorAction()
|
|
{
|
|
delete fParticleGun;
|
|
delete fMessenger;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
void PrimaryGeneratorAction::SetDefaultKinematic()
|
|
{
|
|
G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
|
|
G4String particleName;
|
|
G4ParticleDefinition* particle
|
|
= particleTable->FindParticle(particleName="proton");
|
|
fParticleGun->SetParticleDefinition(particle);
|
|
fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
|
|
fParticleGun->SetParticleEnergy(5.*GeV);
|
|
G4double position = -0.5*(fDetector->GetWorldSizeX());
|
|
fParticleGun->SetParticlePosition(G4ThreeVector(position,0.*cm,0.*cm));
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
|
|
{
|
|
//this function is called at the begining of event
|
|
//
|
|
//randomize the beam, if requested.
|
|
if (fRndmBeam > 0.)
|
|
{
|
|
G4ThreeVector oldPosition = fParticleGun->GetParticlePosition();
|
|
G4double rbeam = 0.5*(fDetector->GetCalorSizeYZ())*fRndmBeam;
|
|
G4double x0 = oldPosition.x();
|
|
G4double y0 = oldPosition.y() + (2*G4UniformRand()-1.)*rbeam;
|
|
G4double z0 = oldPosition.z() + (2*G4UniformRand()-1.)*rbeam;
|
|
fParticleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
|
|
fParticleGun->GeneratePrimaryVertex(anEvent);
|
|
fParticleGun->SetParticlePosition(oldPosition);
|
|
}
|
|
else fParticleGun->GeneratePrimaryVertex(anEvent);
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
void PrimaryGeneratorAction::DefineCommands()
|
|
{
|
|
// Define /testhadr/gun command directory using generic messenger class
|
|
fMessenger = new G4GenericMessenger(this,
|
|
"/testhadr/gun/",
|
|
"gun control");
|
|
|
|
// default kinematic command
|
|
auto& defaultCmd
|
|
= fMessenger->DeclareMethod("setDefault",
|
|
&PrimaryGeneratorAction::SetDefaultKinematic,
|
|
"set/reset kinematic in PrimaryGenerator");
|
|
|
|
defaultCmd.SetStates(G4State_PreInit, G4State_Idle);
|
|
|
|
// randomize beam extension command
|
|
auto& rndmCmd
|
|
= fMessenger->DeclareProperty("rndm", fRndmBeam);
|
|
|
|
rndmCmd.SetGuidance("lateral size of the beam, in fraction of sizeYZ ");
|
|
rndmCmd.SetParameterName("rBeam", false);
|
|
rndmCmd.SetRange("rBeam>=0.&&rBeam<=1.");
|
|
rndmCmd.SetDefaultValue("0.");
|
|
rndmCmd.SetStates(G4State_Idle);
|
|
}
|
|
|
|
//..oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|