Gabriele Cosmo
340 lines
11 KiB
C++
340 lines
11 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
/// \file optical/wls/src/WLSSteppingAction.cc
|
|
/// \brief Implementation of the WLSSteppingAction class
|
|
//
|
|
//
|
|
#include "WLSSteppingAction.hh"
|
|
|
|
#include "WLSDetectorConstruction.hh"
|
|
#include "WLSEventAction.hh"
|
|
#include "WLSPhotonDetSD.hh"
|
|
#include "WLSSteppingActionMessenger.hh"
|
|
#include "WLSUserTrackInformation.hh"
|
|
|
|
#include "G4ios.hh"
|
|
#include "G4OpBoundaryProcess.hh"
|
|
#include "G4OpticalPhoton.hh"
|
|
#include "G4ProcessManager.hh"
|
|
#include "G4Run.hh"
|
|
#include "G4SDManager.hh"
|
|
#include "G4Step.hh"
|
|
#include "G4StepPoint.hh"
|
|
#include "G4SystemOfUnits.hh"
|
|
#include "G4ThreeVector.hh"
|
|
#include "G4Track.hh"
|
|
#include "G4TrackStatus.hh"
|
|
#include "G4UImanager.hh"
|
|
#include "G4VPhysicalVolume.hh"
|
|
|
|
// Purpose: Save relevant information into User Track Information
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
WLSSteppingAction::WLSSteppingAction(WLSDetectorConstruction* detector,
|
|
WLSEventAction* event)
|
|
: fDetector(detector)
|
|
, fEventAction(event)
|
|
{
|
|
fSteppingMessenger = new WLSSteppingActionMessenger(this);
|
|
ResetCounters();
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
WLSSteppingAction::~WLSSteppingAction() { delete fSteppingMessenger; }
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
void WLSSteppingAction::SetBounceLimit(G4int i) { fBounceLimit = i; }
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
G4int WLSSteppingAction::GetNumberOfBounces() { return fCounterBounce; }
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
G4int WLSSteppingAction::GetNumberOfClad1Bounces()
|
|
{
|
|
return fCounterClad1Bounce;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
G4int WLSSteppingAction::GetNumberOfClad2Bounces()
|
|
{
|
|
return fCounterClad2Bounce;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
G4int WLSSteppingAction::GetNumberOfWLSBounces() { return fCounterWLSBounce; }
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
G4int WLSSteppingAction::ResetSuccessCounter()
|
|
{
|
|
G4int temp = fCounterEnd;
|
|
fCounterEnd = 0;
|
|
return temp;
|
|
}
|
|
|
|
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
|
|
|
|
void WLSSteppingAction::UserSteppingAction(const G4Step* theStep)
|
|
{
|
|
G4Track* theTrack = theStep->GetTrack();
|
|
auto trackInformation =
|
|
(WLSUserTrackInformation*) theTrack->GetUserInformation();
|
|
|
|
G4StepPoint* thePrePoint = theStep->GetPreStepPoint();
|
|
G4StepPoint* thePostPoint = theStep->GetPostStepPoint();
|
|
|
|
G4VPhysicalVolume* thePrePV = thePrePoint->GetPhysicalVolume();
|
|
G4VPhysicalVolume* thePostPV = thePostPoint->GetPhysicalVolume();
|
|
|
|
G4String thePrePVname = " ";
|
|
G4String thePostPVname = " ";
|
|
|
|
if(thePostPV)
|
|
{
|
|
thePrePVname = thePrePV->GetName();
|
|
thePostPVname = thePostPV->GetName();
|
|
}
|
|
|
|
// Recording data for start
|
|
// static const G4ThreeVector ZHat = G4ThreeVector(0.0,0.0,1.0);
|
|
if(theTrack->GetParentID() == 0)
|
|
{
|
|
// This is a primary track
|
|
if(theTrack->GetCurrentStepNumber() == 1)
|
|
{
|
|
// G4double x = theTrack->GetVertexPosition().x();
|
|
// G4double y = theTrack->GetVertexPosition().y();
|
|
// G4double z = theTrack->GetVertexPosition().z();
|
|
// G4double pz = theTrack->GetVertexMomentumDirection().z();
|
|
// G4double fInitTheta =
|
|
// theTrack->GetVertexMomentumDirection().angle(ZHat);
|
|
}
|
|
}
|
|
|
|
// Retrieve the status of the photon
|
|
G4OpBoundaryProcessStatus theStatus = Undefined;
|
|
|
|
static G4ThreadLocal G4ProcessManager* OpManager =
|
|
G4OpticalPhoton::OpticalPhoton()->GetProcessManager();
|
|
|
|
if(OpManager)
|
|
{
|
|
G4int nproc = OpManager->GetPostStepProcessVector()->entries();
|
|
G4ProcessVector* fPostStepDoItVector =
|
|
OpManager->GetPostStepProcessVector(typeDoIt);
|
|
|
|
for(G4int i = 0; i < nproc; ++i)
|
|
{
|
|
G4VProcess* fCurrentProcess = (*fPostStepDoItVector)[i];
|
|
fOpProcess = dynamic_cast<G4OpBoundaryProcess*>(fCurrentProcess);
|
|
if(fOpProcess)
|
|
{
|
|
theStatus = fOpProcess->GetStatus();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Find the skewness of the ray at first change of boundary
|
|
if(fInitGamma == -1 &&
|
|
(theStatus == TotalInternalReflection || theStatus == FresnelReflection ||
|
|
theStatus == FresnelRefraction) &&
|
|
trackInformation->IsStatus(InsideOfFiber))
|
|
{
|
|
G4double px = theTrack->GetVertexMomentumDirection().x();
|
|
G4double py = theTrack->GetVertexMomentumDirection().y();
|
|
G4double x = theTrack->GetPosition().x();
|
|
G4double y = theTrack->GetPosition().y();
|
|
|
|
fInitGamma = x * px + y * py;
|
|
|
|
fInitGamma =
|
|
fInitGamma / std::sqrt(px * px + py * py) / std::sqrt(x * x + y * y);
|
|
|
|
fInitGamma = std::acos(fInitGamma * rad);
|
|
|
|
if(fInitGamma / deg > 90.0)
|
|
{
|
|
fInitGamma = 180 * deg - fInitGamma;
|
|
}
|
|
}
|
|
// Record Photons that missed the photon detector but escaped from readout
|
|
if(!thePostPV && trackInformation->IsStatus(EscapedFromReadOut))
|
|
{
|
|
//G4cout << "SteppingAction: status = EscapedFromReadOut" << G4endl;
|
|
fEventAction->AddEscaped();
|
|
// UpdateHistogramSuccess(thePostPoint,theTrack);
|
|
ResetCounters();
|
|
|
|
return;
|
|
}
|
|
|
|
// Assumed photons are originated at the fiber OR
|
|
// the fiber is the first material the photon hits
|
|
switch(theStatus)
|
|
{
|
|
// Exiting the fiber
|
|
case FresnelRefraction:
|
|
case SameMaterial:
|
|
fEventAction->AddExiting();
|
|
|
|
if(thePostPVname == "WLSFiber" || thePostPVname == "Clad1" ||
|
|
thePostPVname == "Clad2")
|
|
{
|
|
if(trackInformation->IsStatus(OutsideOfFiber))
|
|
trackInformation->AddStatusFlag(InsideOfFiber);
|
|
|
|
// Set the Exit flag when the photon refracted out of the fiber
|
|
}
|
|
else if(trackInformation->IsStatus(InsideOfFiber))
|
|
{
|
|
// EscapedFromReadOut if the z position is the same as fiber's end
|
|
if(theTrack->GetPosition().z() == fDetector->GetWLSFiberEnd())
|
|
{
|
|
trackInformation->AddStatusFlag(EscapedFromReadOut);
|
|
fCounterEnd++;
|
|
fEventAction->AddEscapedEnd();
|
|
}
|
|
else // Escaped from side
|
|
{
|
|
trackInformation->AddStatusFlag(EscapedFromSide);
|
|
trackInformation->SetExitPosition(theTrack->GetPosition());
|
|
// UpdateHistogramEscape(thePostPoint,theTrack);
|
|
|
|
fCounterMid++;
|
|
fEventAction->AddEscapedMid();
|
|
ResetCounters();
|
|
}
|
|
|
|
trackInformation->AddStatusFlag(OutsideOfFiber);
|
|
trackInformation->SetExitPosition(theTrack->GetPosition());
|
|
}
|
|
|
|
return;
|
|
|
|
// Internal Reflections
|
|
case TotalInternalReflection:
|
|
|
|
fEventAction->AddTIR();
|
|
|
|
// Kill the track if it's number of bounces exceeded the limit
|
|
if(fBounceLimit > 0 && fCounterBounce >= fBounceLimit)
|
|
{
|
|
theTrack->SetTrackStatus(fStopAndKill);
|
|
trackInformation->AddStatusFlag(murderee);
|
|
ResetCounters();
|
|
G4cout << "\n Bounce Limit Exceeded" << G4endl;
|
|
return;
|
|
}
|
|
break;
|
|
|
|
case FresnelReflection:
|
|
|
|
fCounterBounce++;
|
|
fEventAction->AddBounce();
|
|
|
|
if(thePrePVname == "WLSFiber")
|
|
{
|
|
fCounterWLSBounce++;
|
|
fEventAction->AddWLSBounce();
|
|
}
|
|
else if(thePrePVname == "Clad1")
|
|
{
|
|
fCounterClad1Bounce++;
|
|
fEventAction->AddClad1Bounce();
|
|
}
|
|
else if(thePrePVname == "Clad2")
|
|
{
|
|
fCounterClad2Bounce++;
|
|
fEventAction->AddClad1Bounce();
|
|
}
|
|
|
|
// Determine if the photon has reflected off the read-out end
|
|
if(theTrack->GetPosition().z() == fDetector->GetWLSFiberEnd())
|
|
{
|
|
if(!trackInformation->IsStatus(ReflectedAtReadOut) &&
|
|
trackInformation->IsStatus(InsideOfFiber))
|
|
{
|
|
trackInformation->AddStatusFlag(ReflectedAtReadOut);
|
|
|
|
if(fDetector->IsPerfectFiber() &&
|
|
theStatus == TotalInternalReflection)
|
|
{
|
|
theTrack->SetTrackStatus(fStopAndKill);
|
|
trackInformation->AddStatusFlag(murderee);
|
|
// UpdateHistogramReflect(thePostPoint,theTrack);
|
|
ResetCounters();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
|
|
// Reflection off the mirror
|
|
case LambertianReflection:
|
|
case LobeReflection:
|
|
case SpikeReflection:
|
|
|
|
fEventAction->AddReflected();
|
|
// Check if it hits the mirror
|
|
if(thePostPVname == "Mirror")
|
|
{
|
|
trackInformation->AddStatusFlag(ReflectedAtMirror);
|
|
fEventAction->AddMirror();
|
|
}
|
|
return;
|
|
|
|
// Detected by a detector
|
|
case Detection:
|
|
// Detected automatically with G4OpBoundaryProcess->InvokeSD set true
|
|
|
|
// Stop Tracking when it hits the detector's surface
|
|
ResetCounters();
|
|
theTrack->SetTrackStatus(fStopAndKill);
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// Check for absorbed photons
|
|
if(theTrack->GetTrackStatus() != fAlive &&
|
|
trackInformation->IsStatus(InsideOfFiber))
|
|
{
|
|
// UpdateHistogramAbsorb(thePostPoint,theTrack);
|
|
ResetCounters();
|
|
return;
|
|
}
|
|
}
|