[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4WeightCutOffProcess.cc,v 1.2 2007/06/01 09:16:34 ahoward Exp $ |
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| 28 | // GEANT4 tag $Name: $ |
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| 29 | // |
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| 30 | // ---------------------------------------------------------------------- |
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| 31 | // GEANT 4 class source file |
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| 32 | // |
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| 33 | // G4WeightCutOffProcess.cc |
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| 34 | // |
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| 35 | // ---------------------------------------------------------------------- |
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| 36 | |
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| 37 | #include "G4WeightCutOffProcess.hh" |
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| 38 | //#include "G4VScorer.hh" |
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| 39 | #include "G4GeometryCellStep.hh" |
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| 40 | #include "G4GCellFinder.hh" |
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| 41 | #include "G4TouchableHandle.hh" |
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| 42 | #include "G4VIStore.hh" |
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| 43 | |
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| 44 | #include "G4Step.hh" |
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| 45 | #include "G4Navigator.hh" |
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| 46 | #include "G4VTouchable.hh" |
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| 47 | #include "G4VPhysicalVolume.hh" |
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| 48 | #include "G4ParticleChange.hh" |
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| 49 | #include "G4PathFinder.hh" |
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| 50 | #include "G4TransportationManager.hh" |
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| 51 | #include "G4StepPoint.hh" |
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| 52 | #include "G4FieldTrackUpdator.hh" |
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| 53 | |
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| 54 | |
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| 55 | G4WeightCutOffProcess:: |
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| 56 | G4WeightCutOffProcess(G4double wsurvival, |
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| 57 | G4double wlimit, |
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| 58 | G4double isource, |
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| 59 | G4VIStore *istore, |
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| 60 | const G4VGCellFinder &aGCellFinder, |
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| 61 | const G4String &aName, G4bool para) |
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| 62 | : G4VProcess(aName), |
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| 63 | fParticleChange(new G4ParticleChange), |
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| 64 | fWeightSurvival(wsurvival), |
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| 65 | fWeightLimit(wlimit), |
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| 66 | fSourceImportance(isource), |
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| 67 | fIStore(istore), |
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| 68 | fGCellFinder(aGCellFinder), |
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| 69 | fGhostNavigator(0), fNavigatorID(-1), fFieldTrack('0') |
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| 70 | { |
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| 71 | if (!fParticleChange) |
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| 72 | { |
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| 73 | G4Exception("G4WeightCutOffProcess::G4WeightCutOffProcess()", |
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| 74 | "FatalError", FatalException, |
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| 75 | "Failed to allocate G4ParticleChange !"); |
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| 76 | } |
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| 77 | |
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| 78 | G4VProcess::pParticleChange = fParticleChange; |
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| 79 | |
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| 80 | fGhostStep = new G4Step(); |
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| 81 | fGhostPreStepPoint = fGhostStep->GetPreStepPoint(); |
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| 82 | fGhostPostStepPoint = fGhostStep->GetPostStepPoint(); |
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| 83 | |
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| 84 | fTransportationManager = G4TransportationManager::GetTransportationManager(); |
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| 85 | fPathFinder = G4PathFinder::GetInstance(); |
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| 86 | |
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| 87 | if (verboseLevel>0) |
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| 88 | { |
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| 89 | G4cout << GetProcessName() << " is created " << G4endl; |
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| 90 | } |
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| 91 | |
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| 92 | paraflag = para; |
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| 93 | |
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| 94 | } |
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| 95 | |
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| 96 | G4WeightCutOffProcess::~G4WeightCutOffProcess() |
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| 97 | { |
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| 98 | delete fParticleChange; |
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| 99 | delete fGhostStep; |
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| 100 | } |
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| 101 | |
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| 102 | |
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| 103 | //------------------------------------------------------ |
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| 104 | // |
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| 105 | // SetParallelWorld |
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| 106 | // |
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| 107 | //------------------------------------------------------ |
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| 108 | void G4WeightCutOffProcess:: |
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| 109 | SetParallelWorld(G4String parallelWorldName) |
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| 110 | { |
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| 111 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 112 | // Get pointers of the parallel world and its navigator |
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| 113 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 114 | fGhostWorldName = parallelWorldName; |
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| 115 | fGhostWorld = fTransportationManager->GetParallelWorld(fGhostWorldName); |
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| 116 | fGhostNavigator = fTransportationManager->GetNavigator(fGhostWorld); |
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| 117 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 118 | } |
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| 119 | |
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| 120 | void G4WeightCutOffProcess:: |
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| 121 | SetParallelWorld(G4VPhysicalVolume* parallelWorld) |
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| 122 | { |
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| 123 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 124 | // Get pointer of navigator |
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| 125 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 126 | fGhostWorldName = parallelWorld->GetName(); |
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| 127 | fGhostWorld = parallelWorld; |
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| 128 | fGhostNavigator = fTransportationManager->GetNavigator(fGhostWorld); |
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| 129 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 130 | } |
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| 131 | |
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| 132 | //------------------------------------------------------ |
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| 133 | // |
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| 134 | // StartTracking |
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| 135 | // |
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| 136 | //------------------------------------------------------ |
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| 137 | void G4WeightCutOffProcess::StartTracking(G4Track* trk) |
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| 138 | { |
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| 139 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 140 | // Activate navigator and get the navigator ID |
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| 141 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 142 | // G4cout << " G4ParallelWorldScoringProcess::StartTracking" << G4endl; |
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| 143 | |
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| 144 | if(paraflag) { |
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| 145 | if(fGhostNavigator) |
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| 146 | { fNavigatorID = fTransportationManager->ActivateNavigator(fGhostNavigator); } |
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| 147 | else |
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| 148 | { |
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| 149 | G4Exception("G4WeightCutOffProcess::StartTracking", |
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| 150 | "ProcParaWorld000",FatalException, |
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| 151 | "G4WeightCutOffProcess is used for tracking without having a parallel world assigned"); |
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| 152 | } |
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| 153 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 154 | |
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| 155 | // G4cout << "G4ParallelWorldScoringProcess::StartTracking <<<<<<<<<<<<<<<<<< " << G4endl; |
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| 156 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 157 | // Let PathFinder initialize |
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| 158 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 159 | fPathFinder->PrepareNewTrack(trk->GetPosition(),trk->GetMomentumDirection()); |
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| 160 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 161 | |
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| 162 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 163 | // Setup initial touchables for the first step |
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| 164 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 165 | fOldGhostTouchable = fPathFinder->CreateTouchableHandle(fNavigatorID); |
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| 166 | fGhostPreStepPoint->SetTouchableHandle(fOldGhostTouchable); |
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| 167 | fNewGhostTouchable = fOldGhostTouchable; |
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| 168 | fGhostPostStepPoint->SetTouchableHandle(fNewGhostTouchable); |
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| 169 | |
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| 170 | // Initialize |
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| 171 | fGhostSafety = -1.; |
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| 172 | fOnBoundary = false; |
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| 173 | } |
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| 174 | } |
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| 175 | |
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| 176 | |
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| 177 | G4double G4WeightCutOffProcess:: |
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| 178 | PostStepGetPhysicalInteractionLength(const G4Track &, |
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| 179 | G4double, G4ForceCondition* condition) |
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| 180 | { |
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| 181 | // *condition = Forced; |
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| 182 | // return kInfinity; |
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| 183 | |
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| 184 | // *condition = StronglyForced; |
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| 185 | *condition = Forced; |
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| 186 | return DBL_MAX; |
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| 187 | } |
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| 188 | |
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| 189 | G4VParticleChange * |
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| 190 | G4WeightCutOffProcess::PostStepDoIt(const G4Track& aTrack, |
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| 191 | const G4Step &aStep) |
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| 192 | { |
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| 193 | fParticleChange->Initialize(aTrack); |
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| 194 | |
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| 195 | if(paraflag) { |
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| 196 | fOldGhostTouchable = fGhostPostStepPoint->GetTouchableHandle(); |
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| 197 | //xbug? fOnBoundary = false; |
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| 198 | CopyStep(aStep); |
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| 199 | |
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| 200 | if(fOnBoundary) |
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| 201 | { |
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| 202 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 203 | // Locate the point and get new touchable |
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| 204 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 205 | //?? fPathFinder->Locate(step.GetPostStepPoint()->GetPosition(), |
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| 206 | //?? step.GetPostStepPoint()->GetMomentumDirection()); |
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| 207 | fNewGhostTouchable = fPathFinder->CreateTouchableHandle(fNavigatorID); |
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| 208 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 209 | } |
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| 210 | else |
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| 211 | { |
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| 212 | // Do I need this ?????????????????????????????????????????????????????????? |
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| 213 | // fGhostNavigator->LocateGlobalPointWithinVolume(track.GetPosition()); |
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| 214 | // ????????????????????????????????????????????????????????????????????????? |
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| 215 | |
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| 216 | // fPathFinder->ReLocate(track.GetPosition()); |
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| 217 | |
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| 218 | // reuse the touchable |
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| 219 | fNewGhostTouchable = fOldGhostTouchable; |
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| 220 | } |
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| 221 | |
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| 222 | fGhostPreStepPoint->SetTouchableHandle(fOldGhostTouchable); |
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| 223 | fGhostPostStepPoint->SetTouchableHandle(fNewGhostTouchable); |
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| 224 | |
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| 225 | } |
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| 226 | |
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| 227 | G4GeometryCell postCell = fGCellFinder.GetPostGeometryCell(aStep); |
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| 228 | // G4GeometryCell postCell = fGCellFinder.GetPostGeometryCell(fGhostStep); |
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| 229 | G4double R = fSourceImportance; |
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| 230 | if (fIStore) |
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| 231 | { |
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| 232 | G4double i = fIStore->GetImportance(postCell); |
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| 233 | if (i>0) |
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| 234 | { |
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| 235 | R/=i; |
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| 236 | } |
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| 237 | } |
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| 238 | G4double w = aTrack.GetWeight(); |
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| 239 | if (w<R*fWeightLimit) |
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| 240 | { |
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| 241 | G4double ws = fWeightSurvival*R; |
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| 242 | G4double p = w/(ws); |
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| 243 | if (G4UniformRand()<p) |
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| 244 | { |
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| 245 | fParticleChange->ProposeTrackStatus(fStopAndKill); |
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| 246 | } |
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| 247 | else |
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| 248 | { |
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| 249 | fParticleChange->ProposeWeight(ws); |
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| 250 | } |
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| 251 | } |
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| 252 | return fParticleChange; |
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| 253 | } |
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| 254 | |
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| 255 | const G4String &G4WeightCutOffProcess::GetName() const |
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| 256 | { |
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| 257 | return theProcessName; |
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| 258 | } |
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| 259 | |
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| 260 | G4double G4WeightCutOffProcess:: |
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| 261 | AlongStepGetPhysicalInteractionLength( |
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| 262 | const G4Track& track, G4double previousStepSize, G4double currentMinimumStep, |
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| 263 | G4double& proposedSafety, G4GPILSelection* selection) |
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| 264 | { |
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| 265 | if(paraflag) { |
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| 266 | static G4FieldTrack endTrack('0'); |
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| 267 | static ELimited eLimited; |
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| 268 | |
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| 269 | *selection = NotCandidateForSelection; |
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| 270 | G4double returnedStep = DBL_MAX; |
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| 271 | |
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| 272 | if (previousStepSize > 0.) |
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| 273 | { fGhostSafety -= previousStepSize; } |
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| 274 | // else |
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| 275 | // { fGhostSafety = -1.; } |
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| 276 | if (fGhostSafety < 0.) fGhostSafety = 0.0; |
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| 277 | |
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| 278 | // ------------------------------------------ |
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| 279 | // Determination of the proposed STEP LENGTH: |
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| 280 | // ------------------------------------------ |
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| 281 | if (currentMinimumStep <= fGhostSafety && currentMinimumStep > 0.) |
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| 282 | { |
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| 283 | // I have no chance to limit |
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| 284 | returnedStep = currentMinimumStep; |
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| 285 | fOnBoundary = false; |
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| 286 | proposedSafety = fGhostSafety - currentMinimumStep; |
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| 287 | } |
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| 288 | else // (currentMinimumStep > fGhostSafety: I may limit the Step) |
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| 289 | { |
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| 290 | G4FieldTrackUpdator::Update(&fFieldTrack,&track); |
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| 291 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 292 | // ComputeStep |
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| 293 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 294 | returnedStep |
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| 295 | = fPathFinder->ComputeStep(fFieldTrack,currentMinimumStep,fNavigatorID, |
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| 296 | track.GetCurrentStepNumber(),fGhostSafety,eLimited, |
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| 297 | endTrack,track.GetVolume()); |
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| 298 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 299 | if(eLimited == kDoNot) |
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| 300 | { |
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| 301 | // Track is not on the boundary |
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| 302 | fOnBoundary = false; |
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| 303 | fGhostSafety = fGhostNavigator->ComputeSafety(endTrack.GetPosition()); |
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| 304 | } |
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| 305 | else |
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| 306 | { |
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| 307 | // Track is on the boundary |
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| 308 | fOnBoundary = true; |
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| 309 | proposedSafety = fGhostSafety; |
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| 310 | } |
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| 311 | //xbug? proposedSafety = fGhostSafety; |
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| 312 | if(eLimited == kUnique || eLimited == kSharedOther) { |
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| 313 | *selection = CandidateForSelection; |
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| 314 | }else if (eLimited == kSharedTransport) { |
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| 315 | returnedStep *= (1.0 + 1.0e-9); |
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| 316 | // Expand to disable its selection in Step Manager comparison |
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| 317 | } |
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| 318 | |
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| 319 | } |
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| 320 | |
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| 321 | // ---------------------------------------------- |
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| 322 | // Returns the fGhostSafety as the proposedSafety |
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| 323 | // The SteppingManager will take care of keeping |
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| 324 | // the smallest one. |
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| 325 | // ---------------------------------------------- |
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| 326 | return returnedStep; |
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| 327 | |
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| 328 | } else { |
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| 329 | return DBL_MAX; |
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| 330 | //not sensible! return -1.0; |
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| 331 | } |
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| 332 | |
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| 333 | } |
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| 334 | |
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| 335 | |
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| 336 | G4double G4WeightCutOffProcess:: |
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| 337 | AtRestGetPhysicalInteractionLength(const G4Track& , |
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| 338 | G4ForceCondition*) |
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| 339 | { |
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| 340 | return -1.0; |
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| 341 | } |
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| 342 | |
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| 343 | G4VParticleChange* |
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| 344 | G4WeightCutOffProcess::AtRestDoIt(const G4Track&, const G4Step&) |
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| 345 | { |
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| 346 | return 0; |
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| 347 | } |
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| 348 | |
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| 349 | G4VParticleChange* |
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| 350 | G4WeightCutOffProcess::AlongStepDoIt(const G4Track& track, const G4Step&) |
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| 351 | { |
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| 352 | // Dummy ParticleChange ie: does nothing |
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| 353 | // Expecting G4Transportation to move the track |
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| 354 | pParticleChange->Initialize(track); |
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| 355 | return pParticleChange; |
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| 356 | |
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| 357 | // return 0; |
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| 358 | } |
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| 359 | |
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| 360 | void G4WeightCutOffProcess::CopyStep(const G4Step & step) |
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| 361 | { |
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| 362 | fGhostStep->SetTrack(step.GetTrack()); |
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| 363 | fGhostStep->SetStepLength(step.GetStepLength()); |
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| 364 | fGhostStep->SetTotalEnergyDeposit(step.GetTotalEnergyDeposit()); |
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| 365 | fGhostStep->SetControlFlag(step.GetControlFlag()); |
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| 366 | |
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| 367 | *fGhostPreStepPoint = *(step.GetPreStepPoint()); |
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| 368 | *fGhostPostStepPoint = *(step.GetPostStepPoint()); |
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| 369 | |
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| 370 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 371 | // Set StepStatus for ghost world |
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| 372 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 373 | if(fOnBoundary) |
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| 374 | { fGhostPostStepPoint->SetStepStatus(fGeomBoundary); } |
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| 375 | else if(fGhostPostStepPoint->GetStepStatus()==fGeomBoundary) |
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| 376 | { fGhostPostStepPoint->SetStepStatus(fPostStepDoItProc); } |
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| 377 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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| 378 | } |
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