geant4/examples/extended/biasing/B03/exampleB03.cc

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/// \file biasing/B03/exampleB03.cc
/// \brief Main program of the biasing/B03 example
//
//
//
//
// --------------------------------------------------------------
//      GEANT 4 - exampleB03
//
// --------------------------------------------------------------
// 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 primitive scorers via the Multi Functional Detector
//
//
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#include <iostream>

#include "G4Types.hh"

#include "G4RunManagerFactory.hh"

#include "G4VPhysicalVolume.hh"
#include "G4UImanager.hh"
#include "G4SystemOfUnits.hh"

#include "B03DetectorConstruction.hh"
#include "B03PhysicsList.hh"

#include "B03ActionInitialization.hh"
// #include "B03PrimaryGeneratorAction.hh"
// #include "B03RunAction.hh"

// construction for the parallel geometry
#include "B03ImportanceDetectorConstruction.hh"

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

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

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

  G4long myseed = 345354;

  auto* runManager = G4RunManagerFactory::CreateRunManager();
  runManager->SetNumberOfThreads(2);

  G4Random::setTheSeed(myseed);

  // create the detector      ---------------------------
  B03DetectorConstruction *detector = new B03DetectorConstruction();
  runManager->SetUserInitialization(detector);
  //  ---------------------------------------------------

  // create a parallel detector
  G4String parallelName("ParallelBiasingWorld");
  B03ImportanceDetectorConstruction *pdet =
    new B03ImportanceDetectorConstruction(parallelName);
  detector->RegisterParallelWorld(pdet);

  // G4GeometrySampler pgs(pdet->GetWorldVolume(),"neutron");
  // B03PhysicsList* physlist = new B03PhysicsList;
  // name of first parallel world:
  B03PhysicsList* physlist = new B03PhysicsList(parallelName);
  // push parallel world to store in case of multiple worlds:
  physlist->AddParallelWorldName(parallelName);
  // physlist->AddParallelWorldName(parallelName);
  //physlist->AddParallelWorldName(sparallelName);
  // physlist->AddBiasing(&pgs,parallelName);

  runManager->SetUserInitialization(physlist);

 // Set user action classes through Worker Initialization
 //
  B03ActionInitialization* actions = new B03ActionInitialization;
  runManager->SetUserInitialization(actions);

//   runManager->SetUserAction(new B03PrimaryGeneratorAction);
//   //  runManager->SetUserAction(new B03PrimaryGeneratorAction(ifElectron));
//   runManager->SetUserAction(new B03RunAction);

  runManager->Initialize();

  G4VPhysicalVolume& aghostWorld = pdet->GetWorldVolumeAddress();
  G4cout << " ghost world: " << pdet->GetName() << G4endl;

  // create an importance
  G4IStore *aIstore = G4IStore::GetInstance(pdet->GetName());

  // 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);

  // 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);
  }

  // creating the geometry cell and add both to the store
  //  G4GeometryCell gCell = pdet->GetGeometryCell(18);

  // create importance geometry cell pair for the "rest"cell
  // with the same importance as the last concrete cell
  G4GeometryCell gCell = pdet->GetGeometryCell(19);
  //  G4double imp = std::pow(2.0,18);
  G4double imp = std::pow(2.0,17);
  aIstore->AddImportanceGeometryCell(imp, gCell.GetPhysicalVolume(), 19);

  //temporary fix before runManager->BeamOn works...
  G4UImanager* UImanager = G4UImanager::GetUIpointer();
  G4String command1 = "/control/cout/setCoutFile fileName";
  UImanager->ApplyCommand(command1);

  G4String command2 = "/run/beamOn "
                    + G4UIcommand::ConvertToString(numberOfEvents);;
  UImanager->ApplyCommand(command2);

  //  runManager->BeamOn(numberOfEvents);

  // pgs.ClearSampling();

  delete runManager;

  return 0;
}

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