Gabriele Cosmo
379 lines
13 KiB
C++
379 lines
13 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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//
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// $Id: G4WeightCutOffProcess.cc,v 1.2 2007/06/01 09:16:34 ahoward Exp $
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// GEANT4 tag $Name: geant4-09-01 $
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//
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// ----------------------------------------------------------------------
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// GEANT 4 class source file
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//
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// G4WeightCutOffProcess.cc
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//
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// ----------------------------------------------------------------------
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#include "G4WeightCutOffProcess.hh"
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//#include "G4VScorer.hh"
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#include "G4GeometryCellStep.hh"
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#include "G4GCellFinder.hh"
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#include "G4TouchableHandle.hh"
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#include "G4VIStore.hh"
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#include "G4Step.hh"
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#include "G4Navigator.hh"
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#include "G4VTouchable.hh"
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#include "G4VPhysicalVolume.hh"
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#include "G4ParticleChange.hh"
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#include "G4PathFinder.hh"
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#include "G4TransportationManager.hh"
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#include "G4StepPoint.hh"
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#include "G4FieldTrackUpdator.hh"
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G4WeightCutOffProcess::
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G4WeightCutOffProcess(G4double wsurvival,
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G4double wlimit,
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G4double isource,
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G4VIStore *istore,
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const G4VGCellFinder &aGCellFinder,
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const G4String &aName, G4bool para)
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: G4VProcess(aName),
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fParticleChange(new G4ParticleChange),
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fWeightSurvival(wsurvival),
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fWeightLimit(wlimit),
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fSourceImportance(isource),
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fIStore(istore),
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fGCellFinder(aGCellFinder),
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fGhostNavigator(0), fNavigatorID(-1), fFieldTrack('0')
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{
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if (!fParticleChange)
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{
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G4Exception("G4WeightCutOffProcess::G4WeightCutOffProcess()",
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"FatalError", FatalException,
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"Failed to allocate G4ParticleChange !");
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}
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G4VProcess::pParticleChange = fParticleChange;
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fGhostStep = new G4Step();
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fGhostPreStepPoint = fGhostStep->GetPreStepPoint();
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fGhostPostStepPoint = fGhostStep->GetPostStepPoint();
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fTransportationManager = G4TransportationManager::GetTransportationManager();
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fPathFinder = G4PathFinder::GetInstance();
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if (verboseLevel>0)
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{
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G4cout << GetProcessName() << " is created " << G4endl;
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}
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paraflag = para;
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}
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G4WeightCutOffProcess::~G4WeightCutOffProcess()
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{
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delete fParticleChange;
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delete fGhostStep;
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}
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//------------------------------------------------------
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//
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// SetParallelWorld
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//
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//------------------------------------------------------
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void G4WeightCutOffProcess::
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SetParallelWorld(G4String parallelWorldName)
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{
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Get pointers of the parallel world and its navigator
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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fGhostWorldName = parallelWorldName;
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fGhostWorld = fTransportationManager->GetParallelWorld(fGhostWorldName);
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fGhostNavigator = fTransportationManager->GetNavigator(fGhostWorld);
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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}
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void G4WeightCutOffProcess::
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SetParallelWorld(G4VPhysicalVolume* parallelWorld)
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{
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Get pointer of navigator
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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fGhostWorldName = parallelWorld->GetName();
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fGhostWorld = parallelWorld;
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fGhostNavigator = fTransportationManager->GetNavigator(fGhostWorld);
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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}
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//------------------------------------------------------
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//
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// StartTracking
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//
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//------------------------------------------------------
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void G4WeightCutOffProcess::StartTracking(G4Track* trk)
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{
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Activate navigator and get the navigator ID
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// G4cout << " G4ParallelWorldScoringProcess::StartTracking" << G4endl;
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if(paraflag) {
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if(fGhostNavigator)
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{ fNavigatorID = fTransportationManager->ActivateNavigator(fGhostNavigator); }
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else
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{
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G4Exception("G4WeightCutOffProcess::StartTracking",
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"ProcParaWorld000",FatalException,
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"G4WeightCutOffProcess is used for tracking without having a parallel world assigned");
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}
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// G4cout << "G4ParallelWorldScoringProcess::StartTracking <<<<<<<<<<<<<<<<<< " << G4endl;
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Let PathFinder initialize
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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fPathFinder->PrepareNewTrack(trk->GetPosition(),trk->GetMomentumDirection());
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Setup initial touchables for the first step
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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fOldGhostTouchable = fPathFinder->CreateTouchableHandle(fNavigatorID);
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fGhostPreStepPoint->SetTouchableHandle(fOldGhostTouchable);
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fNewGhostTouchable = fOldGhostTouchable;
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fGhostPostStepPoint->SetTouchableHandle(fNewGhostTouchable);
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// Initialize
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fGhostSafety = -1.;
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fOnBoundary = false;
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}
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}
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G4double G4WeightCutOffProcess::
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PostStepGetPhysicalInteractionLength(const G4Track &,
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G4double, G4ForceCondition* condition)
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{
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// *condition = Forced;
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// return kInfinity;
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// *condition = StronglyForced;
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*condition = Forced;
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return DBL_MAX;
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}
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G4VParticleChange *
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G4WeightCutOffProcess::PostStepDoIt(const G4Track& aTrack,
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const G4Step &aStep)
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{
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fParticleChange->Initialize(aTrack);
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if(paraflag) {
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fOldGhostTouchable = fGhostPostStepPoint->GetTouchableHandle();
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//xbug? fOnBoundary = false;
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CopyStep(aStep);
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if(fOnBoundary)
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{
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Locate the point and get new touchable
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//?? fPathFinder->Locate(step.GetPostStepPoint()->GetPosition(),
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//?? step.GetPostStepPoint()->GetMomentumDirection());
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fNewGhostTouchable = fPathFinder->CreateTouchableHandle(fNavigatorID);
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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}
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else
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{
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// Do I need this ??????????????????????????????????????????????????????????
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// fGhostNavigator->LocateGlobalPointWithinVolume(track.GetPosition());
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// ?????????????????????????????????????????????????????????????????????????
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// fPathFinder->ReLocate(track.GetPosition());
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// reuse the touchable
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fNewGhostTouchable = fOldGhostTouchable;
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}
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fGhostPreStepPoint->SetTouchableHandle(fOldGhostTouchable);
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fGhostPostStepPoint->SetTouchableHandle(fNewGhostTouchable);
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}
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G4GeometryCell postCell = fGCellFinder.GetPostGeometryCell(aStep);
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// G4GeometryCell postCell = fGCellFinder.GetPostGeometryCell(fGhostStep);
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G4double R = fSourceImportance;
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if (fIStore)
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{
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G4double i = fIStore->GetImportance(postCell);
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if (i>0)
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{
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R/=i;
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}
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}
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G4double w = aTrack.GetWeight();
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if (w<R*fWeightLimit)
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{
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G4double ws = fWeightSurvival*R;
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G4double p = w/(ws);
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if (G4UniformRand()<p)
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{
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fParticleChange->ProposeTrackStatus(fStopAndKill);
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}
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else
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{
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fParticleChange->ProposeWeight(ws);
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}
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}
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return fParticleChange;
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}
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const G4String &G4WeightCutOffProcess::GetName() const
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{
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return theProcessName;
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}
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G4double G4WeightCutOffProcess::
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AlongStepGetPhysicalInteractionLength(
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const G4Track& track, G4double previousStepSize, G4double currentMinimumStep,
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G4double& proposedSafety, G4GPILSelection* selection)
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{
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if(paraflag) {
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static G4FieldTrack endTrack('0');
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static ELimited eLimited;
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*selection = NotCandidateForSelection;
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G4double returnedStep = DBL_MAX;
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if (previousStepSize > 0.)
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{ fGhostSafety -= previousStepSize; }
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// else
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// { fGhostSafety = -1.; }
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if (fGhostSafety < 0.) fGhostSafety = 0.0;
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// ------------------------------------------
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// Determination of the proposed STEP LENGTH:
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// ------------------------------------------
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if (currentMinimumStep <= fGhostSafety && currentMinimumStep > 0.)
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{
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// I have no chance to limit
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returnedStep = currentMinimumStep;
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fOnBoundary = false;
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proposedSafety = fGhostSafety - currentMinimumStep;
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}
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else // (currentMinimumStep > fGhostSafety: I may limit the Step)
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{
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G4FieldTrackUpdator::Update(&fFieldTrack,&track);
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// ComputeStep
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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returnedStep
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= fPathFinder->ComputeStep(fFieldTrack,currentMinimumStep,fNavigatorID,
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track.GetCurrentStepNumber(),fGhostSafety,eLimited,
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endTrack,track.GetVolume());
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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if(eLimited == kDoNot)
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{
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// Track is not on the boundary
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fOnBoundary = false;
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fGhostSafety = fGhostNavigator->ComputeSafety(endTrack.GetPosition());
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}
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else
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{
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// Track is on the boundary
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fOnBoundary = true;
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proposedSafety = fGhostSafety;
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}
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//xbug? proposedSafety = fGhostSafety;
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if(eLimited == kUnique || eLimited == kSharedOther) {
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*selection = CandidateForSelection;
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}else if (eLimited == kSharedTransport) {
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returnedStep *= (1.0 + 1.0e-9);
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// Expand to disable its selection in Step Manager comparison
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}
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}
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// ----------------------------------------------
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// Returns the fGhostSafety as the proposedSafety
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// The SteppingManager will take care of keeping
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// the smallest one.
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// ----------------------------------------------
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return returnedStep;
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} else {
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return DBL_MAX;
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//not sensible! return -1.0;
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}
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}
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G4double G4WeightCutOffProcess::
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AtRestGetPhysicalInteractionLength(const G4Track& ,
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G4ForceCondition*)
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{
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return -1.0;
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}
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G4VParticleChange*
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G4WeightCutOffProcess::AtRestDoIt(const G4Track&, const G4Step&)
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{
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return 0;
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}
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G4VParticleChange*
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G4WeightCutOffProcess::AlongStepDoIt(const G4Track& track, const G4Step&)
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{
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// Dummy ParticleChange ie: does nothing
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// Expecting G4Transportation to move the track
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pParticleChange->Initialize(track);
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return pParticleChange;
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// return 0;
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}
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void G4WeightCutOffProcess::CopyStep(const G4Step & step)
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{
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fGhostStep->SetTrack(step.GetTrack());
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fGhostStep->SetStepLength(step.GetStepLength());
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fGhostStep->SetTotalEnergyDeposit(step.GetTotalEnergyDeposit());
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fGhostStep->SetControlFlag(step.GetControlFlag());
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*fGhostPreStepPoint = *(step.GetPreStepPoint());
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*fGhostPostStepPoint = *(step.GetPostStepPoint());
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Set StepStatus for ghost world
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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if(fOnBoundary)
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{ fGhostPostStepPoint->SetStepStatus(fGeomBoundary); }
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else if(fGhostPostStepPoint->GetStepStatus()==fGeomBoundary)
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{ fGhostPostStepPoint->SetStepStatus(fPostStepDoItProc); }
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//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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}
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