Gabriele Cosmo
140 lines
4.8 KiB
C++
140 lines
4.8 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 medical/electronScattering/src/TrackingAction.cc
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/// \brief Implementation of the TrackingAction class
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//
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//
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// $Id: TrackingAction.cc 88035 2015-01-26 10:22:08Z 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 "TrackingAction.hh"
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#include "DetectorConstruction.hh"
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#include "Run.hh"
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#include "HistoManager.hh"
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#include "G4Track.hh"
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#include "G4PhysicalConstants.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4RunManager.hh"
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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TrackingAction::TrackingAction(DetectorConstruction* DET)
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:fDetector(DET)
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{
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fZend = 0.5*(fDetector->GetThicknessWorld());
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void TrackingAction::PreUserTrackingAction(const G4Track*)
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{ }
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void TrackingAction::PostUserTrackingAction(const G4Track* track)
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{
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G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
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G4double charge = track->GetDefinition()->GetPDGCharge();
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G4ThreeVector position = track->GetPosition();
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G4ThreeVector direction = track->GetMomentumDirection();
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if (charge == 0.0) return;
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if (position.z() < fZend) return;
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if (direction.z() <= 0.) return;
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G4double rmin, dr, ds;
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G4int ih = 1;
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//projected angle at exit
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G4double ux = direction.x(), uy = direction.y(), uz = direction.z();
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G4double thetax = std::atan(ux/uz);
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G4double thetay = std::atan(uy/uz);
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analysisManager->FillH1(ih, thetax);
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analysisManager->FillH1(ih, thetay);
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//dN/dS at exit
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G4double x = position.x(), y = position.y();
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G4double r = std::sqrt(x*x + y*y);
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ih = 2;
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dr = analysisManager->GetH1Width(ih);
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rmin = ((int)(r/dr))*dr;
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ds = twopi*(rmin + 0.5*dr)*dr;
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analysisManager->FillH1(ih, r, 1/ds);
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//d(N/cost)/dS at exit
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ih = 3;
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dr = analysisManager->GetH1Width(ih);
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rmin = ((int)(r/dr))*dr;
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ds = twopi*(rmin + 0.5*dr)*dr;
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analysisManager->FillH1(ih, r, 1/(uz*ds));
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//vector of d(N/cost)/dS at exit
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Run* run = static_cast<Run*>(
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G4RunManager::GetRunManager()->GetNonConstCurrentRun());
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run->SumFluence(r, 1/uz);
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//space angle at exit : dN/dOmega
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ih = 5;
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G4double theta = std::acos(uz);
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if (theta > 0.) {
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G4double dtheta = analysisManager->GetH1Width(ih);
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G4double unit = analysisManager->GetH1Unit(ih);
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if (dtheta > 0.) {
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G4double weight = unit*unit/(twopi*std::sin(theta)*dtheta);
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analysisManager->FillH1(ih, theta, weight);
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}
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}
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//measured space angle at exit : dN/dOmega_meas
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//
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ih = 6;
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const G4double dist = fDetector->GetZdist_foil_detector();
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G4double thetam = std::atan(r/dist);
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if (thetam > 0.) {
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G4double dtheta = analysisManager->GetH1Width(ih);
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G4double unit = analysisManager->GetH1Unit(ih);
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if (dtheta > 0.) {
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G4double weight = unit*unit/(twopi*std::sin(thetam)*dtheta);
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analysisManager->FillH1(ih, thetam, weight);
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}
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}
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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