Gabriele Cosmo
270 lines
10 KiB
C++
270 lines
10 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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// $Id: RunAction.cc,v 1.23 2006/06/29 16:56:14 gunter Exp $
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// GEANT4 tag $Name: geant4-09-00 $
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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 "RunAction.hh"
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#include "DetectorConstruction.hh"
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#include "PrimaryGeneratorAction.hh"
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#include "HistoManager.hh"
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#include "G4Run.hh"
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#include "G4RunManager.hh"
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#include "G4UnitsTable.hh"
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#include "G4EmCalculator.hh"
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#include "Randomize.hh"
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#include <iomanip>
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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RunAction::RunAction(DetectorConstruction* det, PrimaryGeneratorAction* kin,
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HistoManager* histo)
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:detector(det), primary(kin), histoManager(histo)
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{ }
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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RunAction::~RunAction()
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{ }
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void RunAction::BeginOfRunAction(const G4Run* aRun)
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{
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G4cout << "### Run " << aRun->GetRunID() << " start." << G4endl;
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//initialisation
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EnergyDeposit = EnergyDeposit2 = 0.;
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TrakLenCharged = TrakLenCharged2 = 0.;
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TrakLenNeutral = TrakLenNeutral2 = 0.;
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nbStepsCharged = nbStepsCharged2 = 0.;
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nbStepsNeutral = nbStepsNeutral2 = 0.;
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MscProjecTheta = MscProjecTheta2 = 0.;
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MscThetaCentral = 3*ComputeMscHighland();
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nbGamma = nbElect = nbPosit = 0;
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Transmit[0] = Transmit[1] = Reflect[0] = Reflect[1] = 0;
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MscEntryCentral = 0;
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histoManager->book();
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// save Rndm status
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G4RunManager::GetRunManager()->SetRandomNumberStore(true);
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CLHEP::HepRandom::showEngineStatus();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void RunAction::EndOfRunAction(const G4Run* aRun)
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{
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// compute mean and rms
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//
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G4int TotNbofEvents = aRun->GetNumberOfEvent();
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if (TotNbofEvents == 0) return;
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EnergyDeposit /= TotNbofEvents; EnergyDeposit2 /= TotNbofEvents;
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G4double rmsEdep = EnergyDeposit2 - EnergyDeposit*EnergyDeposit;
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if (rmsEdep>0.) rmsEdep = std::sqrt(rmsEdep/TotNbofEvents);
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else rmsEdep = 0.;
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TrakLenCharged /= TotNbofEvents; TrakLenCharged2 /= TotNbofEvents;
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G4double rmsTLCh = TrakLenCharged2 - TrakLenCharged*TrakLenCharged;
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if (rmsTLCh>0.) rmsTLCh = std::sqrt(rmsTLCh/TotNbofEvents);
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else rmsTLCh = 0.;
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TrakLenNeutral /= TotNbofEvents; TrakLenNeutral2 /= TotNbofEvents;
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G4double rmsTLNe = TrakLenNeutral2 - TrakLenNeutral*TrakLenNeutral;
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if (rmsTLNe>0.) rmsTLNe = std::sqrt(rmsTLNe/TotNbofEvents);
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else rmsTLNe = 0.;
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nbStepsCharged /= TotNbofEvents; nbStepsCharged2 /= TotNbofEvents;
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G4double rmsStCh = nbStepsCharged2 - nbStepsCharged*nbStepsCharged;
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if (rmsStCh>0.) rmsStCh = std::sqrt(rmsTLCh/TotNbofEvents);
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else rmsStCh = 0.;
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nbStepsNeutral /= TotNbofEvents; nbStepsNeutral2 /= TotNbofEvents;
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G4double rmsStNe = nbStepsNeutral2 - nbStepsNeutral*nbStepsNeutral;
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if (rmsStNe>0.) rmsStNe = std::sqrt(rmsTLCh/TotNbofEvents);
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else rmsStNe = 0.;
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G4double Gamma = (double)nbGamma/TotNbofEvents;
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G4double Elect = (double)nbElect/TotNbofEvents;
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G4double Posit = (double)nbPosit/TotNbofEvents;
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G4double transmit[2];
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transmit[0] = 100.*Transmit[0]/TotNbofEvents;
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transmit[1] = 100.*Transmit[1]/TotNbofEvents;
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G4double reflect[2];
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reflect[0] = 100.*Reflect[0]/TotNbofEvents;
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reflect[1] = 100.*Reflect[1]/TotNbofEvents;
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G4double rmsMsc = 0., tailMsc = 0.;
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if (MscEntryCentral > 0) {
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MscProjecTheta /= MscEntryCentral; MscProjecTheta2 /= MscEntryCentral;
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rmsMsc = MscProjecTheta2 - MscProjecTheta*MscProjecTheta;
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if (rmsMsc > 0.) rmsMsc = std::sqrt(rmsMsc);
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tailMsc = 100.- (100.*MscEntryCentral)/(2*Transmit[1]);
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}
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//Stopping Power from input Table.
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//
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G4Material* material = detector->GetAbsorberMaterial();
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G4double length = detector->GetAbsorberThickness();
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G4double density = material->GetDensity();
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G4ParticleDefinition* particle = primary->GetParticleGun()
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->GetParticleDefinition();
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G4String partName = particle->GetParticleName();
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G4double energy = primary->GetParticleGun()->GetParticleEnergy();
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G4EmCalculator emCalculator;
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G4double dEdxTable = 0., dEdxFull = 0.;
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if (particle->GetPDGCharge()!= 0.) {
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dEdxTable = emCalculator.GetDEDX(energy,particle,material);
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dEdxFull = emCalculator.ComputeTotalDEDX(energy,particle,material);
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}
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G4double stopTable = dEdxTable/density;
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G4double stopFull = dEdxFull /density;
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//Stopping Power from simulation.
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//
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G4double meandEdx = EnergyDeposit/length;
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G4double stopPower = meandEdx/density;
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G4cout << "\n ======================== run summary ======================\n";
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G4int prec = G4cout.precision(3);
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G4cout << "\n The run was " << TotNbofEvents << " " << partName << " of "
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<< G4BestUnit(energy,"Energy") << " through "
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<< G4BestUnit(length,"Length") << " of "
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<< material->GetName() << " (density: "
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<< G4BestUnit(density,"Volumic Mass") << ")" << G4endl;
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G4cout.precision(4);
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G4cout << "\n Total energy deposit in absorber per event = "
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<< G4BestUnit(EnergyDeposit,"Energy") << " +- "
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<< G4BestUnit(rmsEdep, "Energy")
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<< G4endl;
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G4cout << " -----> Mean dE/dx = " << meandEdx/(MeV/cm) << " MeV/cm"
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<< "\t(" << stopPower/(MeV*cm2/g) << " MeV*cm2/g)"
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<< G4endl;
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G4cout << "\n From formulas :" << G4endl;
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G4cout << " restricted dEdx = " << dEdxTable/(MeV/cm) << " MeV/cm"
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<< "\t(" << stopTable/(MeV*cm2/g) << " MeV*cm2/g)"
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<< G4endl;
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G4cout << " full dEdx = " << dEdxFull/(MeV/cm) << " MeV/cm"
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<< "\t(" << stopFull/(MeV*cm2/g) << " MeV*cm2/g)"
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<< G4endl;
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G4cout << "\n Total track length (charged) in absorber per event = "
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<< G4BestUnit(TrakLenCharged,"Length") << " +- "
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<< G4BestUnit(rmsTLCh, "Length") << G4endl;
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G4cout << " Total track length (neutral) in absorber per event = "
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<< G4BestUnit(TrakLenNeutral,"Length") << " +- "
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<< G4BestUnit(rmsTLNe, "Length") << G4endl;
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G4cout << "\n Number of steps (charged) in absorber per event = "
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<< nbStepsCharged << " +- " << rmsStCh << G4endl;
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G4cout << " Number of steps (neutral) in absorber per event = "
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<< nbStepsNeutral << " +- " << rmsStNe << G4endl;
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G4cout << "\n Number of secondaries per event : Gammas = " << Gamma
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<< "; electrons = " << Elect
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<< "; positrons = " << Posit << G4endl;
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G4cout << "\n Number of events with the primary particle transmitted = "
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<< transmit[1] << " %" << G4endl;
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G4cout << " Number of events with at least 1 particle transmitted "
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<< "(same charge as primary) = " << transmit[0] << " %" << G4endl;
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G4cout << "\n Number of events with the primary particle reflected = "
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<< reflect[1] << " %" << G4endl;
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G4cout << " Number of events with at least 1 particle reflected "
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<< "(same charge as primary) = " << reflect[0] << " %" << G4endl;
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// compute width of the Gaussian central part of the MultipleScattering
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//
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if (histoManager->HistoExist(6)) {
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G4cout << "\n MultipleScattering:"
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<< "\n rms proj angle of transmit primary particle = "
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<< rmsMsc/mrad << " mrad (central part only)" << G4endl;
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G4cout << " computed theta0 (Highland formula) = "
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<< ComputeMscHighland()/mrad << " mrad" << G4endl;
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G4cout << " central part defined as +- "
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<< MscThetaCentral/mrad << " mrad; "
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<< " Tail ratio = " << tailMsc << " %" << G4endl;
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}
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G4cout.precision(prec);
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histoManager->save();
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// show Rndm status
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CLHEP::HepRandom::showEngineStatus();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4double RunAction::ComputeMscHighland()
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{
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//compute the width of the Gaussian central part of the MultipleScattering
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//projected angular distribution.
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//Eur. Phys. Jour. C15 (2000) page 166, formule 23.9
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G4double t = (detector->GetAbsorberThickness())
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/(detector->GetAbsorberMaterial()->GetRadlen());
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if (t < DBL_MIN) return 0.;
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G4ParticleGun* particle = primary->GetParticleGun();
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G4double T = particle->GetParticleEnergy();
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G4double M = particle->GetParticleDefinition()->GetPDGMass();
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G4double z = std::abs(particle->GetParticleDefinition()->GetPDGCharge()/eplus);
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G4double bpc = T*(T+2*M)/(T+M);
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G4double teta0 = 13.6*MeV*z*std::sqrt(t)*(1.+0.038*std::log(t))/bpc;
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return teta0;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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