Gabriele Cosmo
322 lines
10 KiB
C++
322 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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/// \file WLSSteppingAction.cc
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/// \brief Implementation of the WLSSteppingAction class
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#include "WLSSteppingAction.hh"
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#include "WLSDetectorConstruction.hh"
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#include "WLSEventAction.hh"
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#include "WLSPhotonDetSD.hh"
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#include "WLSSteppingActionMessenger.hh"
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#include "WLSUserTrackInformation.hh"
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#include "G4OpBoundaryProcess.hh"
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#include "G4OpticalPhoton.hh"
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#include "G4ProcessManager.hh"
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#include "G4Run.hh"
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#include "G4SDManager.hh"
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#include "G4Step.hh"
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#include "G4StepPoint.hh"
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#include "G4SystemOfUnits.hh"
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#include "G4ThreeVector.hh"
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#include "G4Track.hh"
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#include "G4TrackStatus.hh"
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#include "G4UImanager.hh"
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#include "G4VPhysicalVolume.hh"
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#include "G4ios.hh"
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// Purpose: Save relevant information into User Track Information
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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WLSSteppingAction::WLSSteppingAction(WLSDetectorConstruction* detector, WLSEventAction* event)
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: fDetector(detector), fEventAction(event)
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{
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fSteppingMessenger = new WLSSteppingActionMessenger(this);
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ResetCounters();
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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WLSSteppingAction::~WLSSteppingAction()
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{
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delete fSteppingMessenger;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void WLSSteppingAction::SetBounceLimit(G4int i)
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{
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fBounceLimit = i;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4int WLSSteppingAction::GetNumberOfBounces()
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{
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return fCounterBounce;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4int WLSSteppingAction::GetNumberOfClad1Bounces()
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{
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return fCounterClad1Bounce;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4int WLSSteppingAction::GetNumberOfClad2Bounces()
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{
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return fCounterClad2Bounce;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4int WLSSteppingAction::GetNumberOfWLSBounces()
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{
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return fCounterWLSBounce;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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G4int WLSSteppingAction::ResetSuccessCounter()
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{
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G4int temp = fCounterEnd;
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fCounterEnd = 0;
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return temp;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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void WLSSteppingAction::UserSteppingAction(const G4Step* theStep)
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{
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G4Track* theTrack = theStep->GetTrack();
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auto trackInformation = (WLSUserTrackInformation*)theTrack->GetUserInformation();
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G4StepPoint* thePrePoint = theStep->GetPreStepPoint();
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G4StepPoint* thePostPoint = theStep->GetPostStepPoint();
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G4VPhysicalVolume* thePrePV = thePrePoint->GetPhysicalVolume();
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G4VPhysicalVolume* thePostPV = thePostPoint->GetPhysicalVolume();
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G4String thePrePVname = " ";
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G4String thePostPVname = " ";
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if (thePostPV) {
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thePrePVname = thePrePV->GetName();
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thePostPVname = thePostPV->GetName();
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}
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// Recording data for start
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// static const G4ThreeVector ZHat = G4ThreeVector(0.0,0.0,1.0);
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if (theTrack->GetParentID() == 0) {
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// This is a primary track
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if (theTrack->GetCurrentStepNumber() == 1) {
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// G4double x = theTrack->GetVertexPosition().x();
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// G4double y = theTrack->GetVertexPosition().y();
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// G4double z = theTrack->GetVertexPosition().z();
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// G4double pz = theTrack->GetVertexMomentumDirection().z();
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// G4double fInitTheta =
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// theTrack->GetVertexMomentumDirection().angle(ZHat);
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}
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}
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// Retrieve the status of the photon
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G4OpBoundaryProcessStatus theStatus = Undefined;
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static G4ThreadLocal G4ProcessManager* OpManager =
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G4OpticalPhoton::OpticalPhoton()->GetProcessManager();
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if (OpManager) {
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G4int nproc = OpManager->GetPostStepProcessVector()->entries();
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G4ProcessVector* fPostStepDoItVector = OpManager->GetPostStepProcessVector(typeDoIt);
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for (G4int i = 0; i < nproc; ++i) {
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G4VProcess* fCurrentProcess = (*fPostStepDoItVector)[i];
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fOpProcess = dynamic_cast<G4OpBoundaryProcess*>(fCurrentProcess);
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if (fOpProcess) {
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theStatus = fOpProcess->GetStatus();
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break;
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}
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}
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}
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// Find the skewness of the ray at first change of boundary
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if (fInitGamma == -1
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&& (theStatus == TotalInternalReflection || theStatus == FresnelReflection
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|| theStatus == FresnelRefraction)
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&& trackInformation->IsStatus(InsideOfFiber))
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{
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G4double px = theTrack->GetVertexMomentumDirection().x();
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G4double py = theTrack->GetVertexMomentumDirection().y();
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G4double x = theTrack->GetPosition().x();
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G4double y = theTrack->GetPosition().y();
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fInitGamma = x * px + y * py;
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fInitGamma = fInitGamma / std::sqrt(px * px + py * py) / std::sqrt(x * x + y * y);
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fInitGamma = std::acos(fInitGamma * rad);
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if (fInitGamma / deg > 90.0) {
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fInitGamma = 180 * deg - fInitGamma;
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}
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}
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// Record Photons that missed the photon detector but escaped from readout
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if (!thePostPV && trackInformation->IsStatus(EscapedFromReadOut)) {
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// G4cout << "SteppingAction: status = EscapedFromReadOut" << G4endl;
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fEventAction->AddEscaped();
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// UpdateHistogramSuccess(thePostPoint,theTrack);
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ResetCounters();
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return;
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}
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// Assumed photons are originated at the fiber OR
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// the fiber is the first material the photon hits
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switch (theStatus) {
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// Exiting the fiber
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case FresnelRefraction:
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case SameMaterial:
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fEventAction->AddExiting();
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if (thePostPVname == "WLSFiber" || thePostPVname == "Clad1" || thePostPVname == "Clad2") {
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if (trackInformation->IsStatus(OutsideOfFiber))
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trackInformation->AddStatusFlag(InsideOfFiber);
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// Set the Exit flag when the photon refracted out of the fiber
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}
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else if (trackInformation->IsStatus(InsideOfFiber)) {
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// EscapedFromReadOut if the z position is the same as fiber's end
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if (theTrack->GetPosition().z() == fDetector->GetWLSFiberEnd()) {
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trackInformation->AddStatusFlag(EscapedFromReadOut);
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fCounterEnd++;
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fEventAction->AddEscapedEnd();
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}
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else // Escaped from side
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{
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trackInformation->AddStatusFlag(EscapedFromSide);
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trackInformation->SetExitPosition(theTrack->GetPosition());
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// UpdateHistogramEscape(thePostPoint,theTrack);
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fCounterMid++;
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fEventAction->AddEscapedMid();
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ResetCounters();
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}
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trackInformation->AddStatusFlag(OutsideOfFiber);
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trackInformation->SetExitPosition(theTrack->GetPosition());
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}
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return;
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// Internal Reflections
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case TotalInternalReflection:
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fEventAction->AddTIR();
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// Kill the track if it's number of bounces exceeded the limit
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if (fBounceLimit > 0 && fCounterBounce >= fBounceLimit) {
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theTrack->SetTrackStatus(fStopAndKill);
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trackInformation->AddStatusFlag(murderee);
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ResetCounters();
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G4cout << "\n Bounce Limit Exceeded" << G4endl;
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return;
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}
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break;
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case FresnelReflection:
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fCounterBounce++;
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fEventAction->AddBounce();
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if (thePrePVname == "WLSFiber") {
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fCounterWLSBounce++;
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fEventAction->AddWLSBounce();
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}
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else if (thePrePVname == "Clad1") {
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fCounterClad1Bounce++;
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fEventAction->AddClad1Bounce();
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}
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else if (thePrePVname == "Clad2") {
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fCounterClad2Bounce++;
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fEventAction->AddClad1Bounce();
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}
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// Determine if the photon has reflected off the read-out end
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if (theTrack->GetPosition().z() == fDetector->GetWLSFiberEnd()) {
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if (!trackInformation->IsStatus(ReflectedAtReadOut)
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&& trackInformation->IsStatus(InsideOfFiber))
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{
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trackInformation->AddStatusFlag(ReflectedAtReadOut);
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if (fDetector->IsPerfectFiber() && theStatus == TotalInternalReflection) {
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theTrack->SetTrackStatus(fStopAndKill);
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trackInformation->AddStatusFlag(murderee);
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// UpdateHistogramReflect(thePostPoint,theTrack);
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ResetCounters();
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return;
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}
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}
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}
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return;
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// Reflection off the mirror
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case LambertianReflection:
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case LobeReflection:
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case SpikeReflection:
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fEventAction->AddReflected();
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// Check if it hits the mirror
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if (thePostPVname == "Mirror") {
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trackInformation->AddStatusFlag(ReflectedAtMirror);
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fEventAction->AddMirror();
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}
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return;
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// Detected by a detector
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case Detection:
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// Detected automatically with G4OpBoundaryProcess->InvokeSD set true
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// Stop Tracking when it hits the detector's surface
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ResetCounters();
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theTrack->SetTrackStatus(fStopAndKill);
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return;
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default:
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break;
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}
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// Check for absorbed photons
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if (theTrack->GetTrackStatus() != fAlive && trackInformation->IsStatus(InsideOfFiber)) {
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// UpdateHistogramAbsorb(thePostPoint,theTrack);
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ResetCounters();
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return;
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}
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}
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