Import Geant4 4.0.0 source tree
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Gabriele Cosmo
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//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: XrayFluoPrimaryGeneratorAction.cc
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// GEANT4 tag $Name: xray_fluo-V03-02-00
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//
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// Author: Elena Guardincerri (Elena.Guardincerri@ge.infn.it)
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//
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// History:
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// -----------
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// 28 Nov 2001 Elena Guardincerri Created
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//
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// -------------------------------------------------------------------
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#include "XrayFluoPrimaryGeneratorAction.hh"
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#include "G4DataVector.hh"
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#include "XrayFluoDetectorConstruction.hh"
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#include "XrayFluoPrimaryGeneratorMessenger.hh"
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#include "XrayFluoRunAction.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 "Randomize.hh"
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#include "XrayFluoAnalysisManager.hh"
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#include "XrayFluoDataSet.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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XrayFluoPrimaryGeneratorAction::XrayFluoPrimaryGeneratorAction(
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XrayFluoDetectorConstruction* XrayFluoDC)
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:XrayFluoDetector(XrayFluoDC),rndmFlag("off"),
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beam("off"),spectrum("off"),isoVert("off")
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{
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G4int n_particle = 1;
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particleGun = new G4ParticleGun(n_particle);
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//create a messenger for this class
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gunMessenger = new XrayFluoPrimaryGeneratorMessenger(this);
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runManager = new XrayFluoRunAction();
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// default particle kinematic
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G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
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G4String particleName;
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G4ParticleDefinition* particle
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= particleTable->FindParticle(particleName="e-");
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particleGun->SetParticleDefinition(particle);
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particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
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particleGun->SetParticleEnergy(50.*MeV);
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G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ());
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particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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XrayFluoPrimaryGeneratorAction::~XrayFluoPrimaryGeneratorAction()
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{
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delete particleGun;
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delete gunMessenger;
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delete runManager;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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void XrayFluoPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
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{
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//this function is called at the begining of event
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//
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G4double z0 = -0.5*(XrayFluoDetector->GetWorldSizeZ());
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G4double y0 = 0.*cm, x0 = 0.*cm;
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if (rndmFlag == "on")
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{y0 = (XrayFluoDetector->GetSampleSizeXY())*(G4UniformRand()-0.5);
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x0 = (XrayFluoDetector->GetSampleSizeXY())*(G4UniformRand()-0.5);
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}
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particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
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//randomize starting point
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if (beam == "on")
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{
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G4double radius = 0.5 * mm;
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G4double rho = radius*sqrt(G4UniformRand());
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G4double theta = 2*pi*G4UniformRand()*rad;
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G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ());
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G4double y = rho * sin(theta);
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G4double x = rho * cos(theta);
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particleGun->SetParticlePosition(G4ThreeVector(x,y,position));
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}
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//shoot particles according to a certain spectrum
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if (spectrum =="on")
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{
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G4String particle = particleGun->GetParticleDefinition()
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->GetParticleName();
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if(particle == "proton"|| particle == "alpha")
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{
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G4DataVector* energies = runManager->GetEnergies();
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G4DataVector* data = runManager->GetData();
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G4double sum = runManager->GetDataSum();
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G4double partSum = 0;
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G4int j = 0;
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G4double random= sum*G4UniformRand();
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while (partSum<random)
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{
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partSum += (*data)[j];
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j++;
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}
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particleGun->SetParticleEnergy((*energies)[j]);
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}
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else if (particle == "gamma")
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{
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const XrayFluoDataSet* dataSet = runManager->GetGammaSet();
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G4int i = 0;
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G4int id = 0;
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G4double minEnergy = 0. * keV;
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G4double particleEnergy= 0.;
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G4double maxEnergy = 10. * keV;
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G4double energyRange = maxEnergy - minEnergy;
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while ( i == 0)
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{
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G4double random = G4UniformRand();
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G4double randomNum = G4UniformRand()*5.0E6;
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particleEnergy = random * energyRange;
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if ((dataSet->FindValue(particleEnergy,id)) > randomNum)
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{
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i = 1;
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}
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}
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particleGun->SetParticleEnergy(particleEnergy);
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}
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}
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if (isoVert == "on")
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{
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G4double rho = 1. *m;
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//theta in [0;pi/2]
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G4double theta = (pi/2)*G4UniformRand();
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//phi in [-pi;pi]
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G4double phi = (G4UniformRand()*2*pi)- pi;
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G4double x = rho*sin(theta)*sin(phi);
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G4double y = rho*sin(theta)*cos(phi);
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G4double z = -(rho*cos(theta));
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particleGun->SetParticlePosition(G4ThreeVector(x,y,z));
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G4double Xdim = XrayFluoDetector->GetSampleSizeXY();
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G4double Ydim = XrayFluoDetector->GetSampleSizeXY();
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G4double Dx = Xdim*(G4UniformRand()-0.5);
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G4double Dy = Ydim*(G4UniformRand()-0.5);
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particleGun->SetParticleMomentumDirection(G4ThreeVector(-x+Dx,-y+Dy,-z));
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}
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#ifdef G4ANALYSIS_USE
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G4double partEnergy = particleGun->GetParticleEnergy();
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XrayFluoAnalysisManager* analysis = XrayFluoAnalysisManager::getInstance();
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analysis->analysePrimaryGenerator(partEnergy/keV);
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#endif
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particleGun->GeneratePrimaryVertex(anEvent);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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