Gabriele Cosmo
108 lines
4.5 KiB
C++
108 lines
4.5 KiB
C++
//
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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 electromagnetic/TestEm6/src/SteppingAction.cc
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/// \brief Implementation of the SteppingAction class
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//
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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 "SteppingAction.hh"
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#include "RunAction.hh"
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#include "G4SteppingManager.hh"
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#include "G4VProcess.hh"
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#include "G4ParticleTypes.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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SteppingAction::SteppingAction(RunAction* RuAct)
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:G4UserSteppingAction(),fRunAction(RuAct)
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{
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fMuonMass = G4MuonPlus::MuonPlus()->GetPDGMass();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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SteppingAction::~SteppingAction()
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{ }
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void SteppingAction::UserSteppingAction(const G4Step* aStep)
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{
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const G4VProcess* process = aStep->GetPostStepPoint()->GetProcessDefinedStep();
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if (process == 0) return;
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G4String processName = process->GetProcessName();
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fRunAction->CountProcesses(processName); //count processes
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if (processName != "GammaToMuPair") return;
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G4StepPoint* PrePoint = aStep->GetPreStepPoint();
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G4double EGamma = PrePoint->GetTotalEnergy();
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G4ThreeVector PGamma = PrePoint->GetMomentum();
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G4double Eplus(0), Eminus(0);
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G4ThreeVector Pplus , Pminus;
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const G4TrackVector* secondary = fpSteppingManager->GetSecondary();
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for (size_t lp=0; lp<(*secondary).size(); lp++) {
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if ((*secondary)[lp]->GetDefinition()==G4MuonPlus::MuonPlusDefinition()) {
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Eplus = (*secondary)[lp]->GetTotalEnergy();
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Pplus = (*secondary)[lp]->GetMomentum();
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} else {
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Eminus = (*secondary)[lp]->GetTotalEnergy();
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Pminus = (*secondary)[lp]->GetMomentum();
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}
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}
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G4double xPlus = Eplus/EGamma, xMinus = Eminus/EGamma;
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G4double thetaPlus = PGamma.angle(Pplus), thetaMinus = PGamma.angle(Pminus);
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G4double GammaPlus = Eplus/fMuonMass;
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G4double GammaMinus= Eminus/fMuonMass;
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G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
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if(0.0 == thetaPlus || 0.0 == thetaMinus) {
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G4cout << "SteppingAction: "
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<< "thetaPlus= " << thetaPlus << " thetaMinus= " << thetaMinus
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<< " gamPlus= " << GammaPlus << " gamMinus= " << GammaMinus
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<< " " << thetaPlus *GammaPlus - thetaMinus*GammaMinus << G4endl;
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return;
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}
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analysisManager->FillH1(1,1./(1.+std::pow(thetaPlus*GammaPlus,2)));
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analysisManager->FillH1(2,std::log10(thetaPlus*GammaPlus));
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analysisManager->FillH1(3,std::log10(thetaMinus*GammaMinus));
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analysisManager->FillH1(4,std::log10(std::fabs(thetaPlus *GammaPlus
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-thetaMinus*GammaMinus)));
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analysisManager->FillH1(5,xPlus);
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analysisManager->FillH1(6,xMinus);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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