source: trunk/examples/extended/biasing/B02/exampleB02.cc@ 1322

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// $Id: exampleB02.cc,v 1.22 2007/06/22 13:38:55 ahoward Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
// 
// --------------------------------------------------------------
//      GEANT 4 - exampleB02
//
// --------------------------------------------------------------
// Comments
//
// This example intends to show how to use both importance sampling and a
// customized scoring making use of the scoring framework
// in a parallel geometry.
// 
// A simple geometry consisting of a 180 cm high concrete cylinder
// is constructed in the mass geometry.
// A geometry is constructed in the parallel geometry
// in order to assign importance values to slabs
// of width 10cm and for scoring. The parallel world volume should 
// overlap the mass world volume and  the radii of the slabs is larger 
// than the radius of the concrete cylinder in the mass geometry.
// Pairs of G4GeometryCell and importance values are stored in
// the importance store.
// The scoring uses the G4CellSCorer and one customized scorer for
// the last slab. 
// 
// 

// --------------------------------------------------------------

#include <iostream>

#include "G4VPhysicalVolume.hh"
#include "G4RunManager.hh"
#include "G4UImanager.hh"

#include "B02DetectorConstruction.hh"
#include "B02PhysicsList.hh"
#include "B02PrimaryGeneratorAction.hh"

#include "B02RunAction.hh"
#include "B02PSScoringDetectorConstruction.hh"

// construction for the parallel geometry
#include "B02ImportanceDetectorConstruction.hh"

// Files specific for biasing and scoring
//#include "G4Scorer.hh"
#include "G4GeometrySampler.hh"
#include "G4IStore.hh"

// customized scorer and store
#include "B02CellScorer.hh"
#include "B02CellScorerStore.hh"

// a score table
//#include "G4ScoreTable.hh"
#include "B02ScoreTable.hh"

// AIDA stuff

#include "AIDA/IAnalysisFactory.h"
#include "AIDA/ITree.h"
#include "AIDA/ITreeFactory.h"
#include "AIDA/IHistogram1D.h"
#include "AIDA/IHistogramFactory.h"



int main(int , char **)
{  
  G4int numberOfEvents = 100;

  G4long myseed = 345354;

  CLHEP::HepRandom::setTheSeed(myseed);

  G4RunManager *runManager = new G4RunManager;
  
  // create the detector      ---------------------------
  B02DetectorConstruction *detector = new B02DetectorConstruction();
  runManager->SetUserInitialization(detector);
  //  ---------------------------------------------------

  // create a parallel detector
  // create a parallel detector
  //  B02ImportanceDetectorConstruction *pdet = 
  //    new B02ImportanceDetectorConstruction;
  G4String parallelName("ParallelBiasingWorld");
  B02ImportanceDetectorConstruction *pdet = 
    new B02ImportanceDetectorConstruction(parallelName);
  detector->RegisterParallelWorld(pdet);


  B02PhysicsList* physlist = new B02PhysicsList;
  physlist->AddParallelWorldName(parallelName); 
  //physlist->AddParallelWorldName(sparallelName);
  runManager->SetUserInitialization(physlist);
  runManager->SetUserAction(new B02PrimaryGeneratorAction);
  //  runManager->SetUserAction(new B02PrimaryGeneratorAction(ifElectron));
  runManager->SetUserAction(new B02RunAction);

  runManager->Initialize();

  G4VPhysicalVolume* ghostWorld = pdet->GetWorldVolume();
  G4VPhysicalVolume& aghostWorld = pdet->GetWorldVolumeAddress();

  G4cout << " ghost world: " << pdet->GetName() << G4endl;

  // create an importance 
  G4IStore aIstore(aghostWorld);
  // create a geometry cell for the world volume replpicanumber is 0!
  G4GeometryCell gWorldVolumeCell(aghostWorld, 0);
  // set world volume importance to 1
  aIstore.AddImportanceGeometryCell(1, gWorldVolumeCell);

  // create a customized cell scorer store
  B02CellScorerStore b02store;

  // set importance values and create scorers 
  G4int cell(1);
  for (cell=1; cell<=18; cell++) {
    G4GeometryCell gCell = pdet->GetGeometryCell(cell);
    G4cout << " adding cell: " << cell << " replica: " << gCell.GetReplicaNumber() << " name: " << gCell.GetPhysicalVolume().GetName() << G4endl;
    G4double imp = std::pow(2.0,cell-1);
    //x    aIstore.AddImportanceGeometryCell(imp, gCell);
    aIstore.AddImportanceGeometryCell(imp, gCell.GetPhysicalVolume(), cell);
    // adding the standard G4CellScorer for 17 concrete cells
    if (cell<18) {
      b02store.AddG4CellScorer(gCell);
    }
  }

  // create a histogram for a special scorer for the last cell 
  AIDA::IAnalysisFactory *af = AIDA_createAnalysisFactory();
  AIDA::ITreeFactory *tf = af->createTreeFactory();
  AIDA::ITree *tree = tf->create("b02.hbook", "hbook",false,true);
  AIDA::IHistogramFactory *hf = af->createHistogramFactory( *tree );
  AIDA::IHistogram1D *h = 
    hf->createHistogram1D("10","w*sl vs. e", 30, 0., 20*MeV);
  // create a special scorer for the last cell 
  B02CellScorer b02scorer(h);
  



  // creating the geometry cell and add both to the store
  G4GeometryCell gCell = pdet->GetGeometryCell(18);
  b02store.AddB02CellScorer(&b02scorer, gCell);


  // create importance geometry cell pair for the "rest"cell
  // with the same importance as the last concrete cell 
  gCell = pdet->GetGeometryCell(19);
  //  G4double imp = std::pow(2.0,18); 
  G4double imp = std::pow(2.0,17); 
  aIstore.AddImportanceGeometryCell(imp, gCell.GetPhysicalVolume(), 19);
  

  // create the importance and scoring sampler for biasing and scoring 
  // in the parallel world

  //  G4CellStoreScorer scorer(b02store); 

  G4GeometrySampler pgs(ghostWorld,"neutron");

  pgs.SetParallel(true);

  //
  //  pgs.PrepareScoring(&scorer);

  pgs.PrepareImportanceSampling(&aIstore, 0);

  pgs.Configure();

  runManager->BeamOn(numberOfEvents);

  // print a table of the scores
  B02ScoreTable sp(&aIstore);


 
  tree->commit();
  tree->close();

  delete af;
  delete tf;
  delete tree;

  pgs.ClearSampling();

  delete runManager;
 
  return 0;
}