[807] | 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: exampleB01.cc,v 1.27 2007/06/22 13:22:09 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 | // -------------------------------------------------------------- |
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| 32 | // GEANT 4 - exampleB01 |
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| 33 | // |
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| 34 | // -------------------------------------------------------------- |
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| 35 | // Comments |
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| 36 | // |
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| 37 | // This example intends to show how to use importance sampling and scoring |
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| 38 | // in the mass (tracking) geometry. |
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| 39 | // A simple geometry consisting of a 180 cm high concrete cylinder |
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| 40 | // divided into 18 slabs of 10cm each is created. |
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| 41 | // Importance values are assigned to the 18 concrete slabs in the |
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| 42 | // detector construction class for simplicity. |
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| 43 | // Pairs of G4GeometryCell and importance values are stored in |
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| 44 | // the importance store. |
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| 45 | // The G4Scorer is used for the scoring. This is a top level |
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| 46 | // class using the frame work provided for scoring. |
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| 47 | // |
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| 48 | |
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| 49 | // -------------------------------------------------------------- |
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| 50 | |
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| 51 | #include <iostream> |
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| 52 | |
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| 53 | #include "G4VPhysicalVolume.hh" |
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| 54 | #include "G4RunManager.hh" |
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| 55 | #include "G4UImanager.hh" |
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| 56 | #include "G4GeometryManager.hh" |
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| 57 | |
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| 58 | // user classes |
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| 59 | #include "B01DetectorConstruction.hh" |
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| 60 | #include "B01PhysicsList.hh" |
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| 61 | #include "B01PrimaryGeneratorAction.hh" |
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| 62 | #include "B01RunAction.hh" |
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| 63 | #include "B01ScoreTable.hh" |
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| 64 | |
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| 65 | // Files specific for biasing and scoring |
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| 66 | #include "G4GeometrySampler.hh" |
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| 67 | #include "G4IStore.hh" |
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| 68 | #include "G4VWeightWindowStore.hh" |
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| 69 | #include "G4WeightWindowAlgorithm.hh" |
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| 70 | |
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| 71 | |
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| 72 | int main(int argc, char **argv) |
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| 73 | { |
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| 74 | G4int mode = 0; |
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| 75 | if (argc>1) mode = atoi(argv[1]); |
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| 76 | |
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| 77 | G4int numberOfEvents = 100; |
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| 78 | G4long myseed = 345354; |
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| 79 | CLHEP::HepRandom::setTheSeed(myseed); |
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| 80 | |
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| 81 | G4RunManager *runManager = new G4RunManager; |
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| 82 | |
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| 83 | // create the detector --------------------------- |
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| 84 | B01DetectorConstruction *detector = new B01DetectorConstruction(); |
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| 85 | runManager->SetUserInitialization(detector); |
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| 86 | // --------------------------------------------------- |
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| 87 | runManager->SetUserInitialization(new B01PhysicsList); |
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| 88 | runManager->SetUserAction(new B01PrimaryGeneratorAction); |
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| 89 | runManager->SetUserAction(new B01RunAction); |
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| 90 | runManager->Initialize(); |
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| 91 | |
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| 92 | // pointers for importance store, weight-window store |
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| 93 | // and weight-window algorithm |
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| 94 | // |
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| 95 | G4VIStore *aIstore = 0; |
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| 96 | G4VWeightWindowStore *aWWstore = 0; |
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| 97 | G4VWeightWindowAlgorithm *wwAlg = 0; |
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| 98 | |
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| 99 | // create sampler for biasing and scoring in the mass geometry |
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| 100 | // |
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| 101 | G4GeometrySampler mgs(detector->GetWorldVolume(),"neutron"); |
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| 102 | mgs.SetParallel(false); |
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| 103 | |
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| 104 | if (mode == 0) |
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| 105 | { |
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| 106 | // prepare for importance sampling |
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| 107 | // |
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| 108 | aIstore = detector->CreateImportanceStore(); |
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| 109 | mgs.PrepareImportanceSampling(aIstore, 0); |
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| 110 | } |
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| 111 | else |
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| 112 | { |
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| 113 | // prepare for weight window technique |
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| 114 | // in this case the algoritm is initialized such that |
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| 115 | // the weight window tehcnique does exactly the same as |
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| 116 | // the importance sampling technique, therefore |
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| 117 | // the place of action ( the locations where |
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| 118 | // splitting and Russian roulette are to be applied) |
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| 119 | // is chosen to be on the boundary between cells. |
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| 120 | // |
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| 121 | aWWstore = detector->CreateWeightWindowStore(); |
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| 122 | |
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| 123 | wwAlg = new G4WeightWindowAlgorithm(1, // upper limit factor |
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| 124 | 1, // survival factor |
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| 125 | 100); // max. number of splitting |
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| 126 | |
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| 127 | mgs.PrepareWeightWindow(aWWstore, wwAlg, onBoundary); // place of action |
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| 128 | } |
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| 129 | mgs.Configure(); |
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| 130 | |
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| 131 | runManager->BeamOn(numberOfEvents); |
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| 132 | |
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| 133 | // print a table of the scores |
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| 134 | // |
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| 135 | B01ScoreTable sp(aIstore); //ASO |
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| 136 | |
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| 137 | // open geometry for clean biasing stores clean-up |
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| 138 | // |
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| 139 | G4GeometryManager::GetInstance()->OpenGeometry(); |
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| 140 | |
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| 141 | if (aIstore) { |
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| 142 | delete aIstore; |
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| 143 | } |
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| 144 | if (aWWstore) { |
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| 145 | delete aWWstore; |
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| 146 | } |
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| 147 | if (wwAlg) { |
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| 148 | delete wwAlg; |
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| 149 | } |
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| 150 | |
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| 151 | mgs.ClearSampling(); |
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| 152 | |
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| 153 | delete runManager; |
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| 154 | |
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| 155 | return 0; |
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| 156 | } |
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