// Macro for running Cbm  with Geant3  or Geant4 (M. Al-Turany , D. Bertini)
// Modified 22/06/2005 D.Bertini
{
  TStopwatch timer;
  timer.Start();
  gDebug=0;
  // Load basic libraries
  gROOT->LoadMacro("$VMCWORKDIR/gconfig/basiclibs.C");
  basiclibs();
  // Load this example libraries
  gSystem->Load("libGeoBase");
  gSystem->Load("libParBase");
  gSystem->Load("libBase");
  gSystem->Load("libMCStack");
  gSystem->Load("libField");
  gSystem->Load("libPassive");
  gSystem->Load("libGen");
  gSystem->Load("libtpc");
  //  gSystem->Load("libPGen");


  Int_t nEvents = 100;

  CbmRunSim *fRun = new CbmRunSim();
  
  // set the MC version used
  // ------------------------

  fRun->SetName("TGeant4");
  // Choose the Geant Navigation System
  // fRun->SetGeoModel("G3Native");
  
  fRun->SetOutputFile("tpcMC.root");

  // Set Material file Name
  //-----------------------

  fRun->SetMaterials("media_pnd.geo");
  

  std::cout<< "Materials set" << std::endl;
  

  // Create and add detectors
  //-------------------------

  CbmModule *Cave= new PndCave("CAVE");
  Cave->SetGeometryFileName("pndcave.geo");
  fRun->AddModule(Cave);

  CbmDetector *PndTpc = new PndTpcDetector("TPC", kTRUE);
  PndTpc->SetGeometryFileName("benchmark.geo");
  fRun->AddModule(PndTpc);


   
 // Create and Set Event Generator
 //-------------------------------

  CbmPrimaryGenerator* primGen = new CbmPrimaryGenerator();
  fRun->SetGenerator(primGen);

  CbmBoxGenerator* boxGen = new CbmBoxGenerator(13, 1); // 13 = muon; 1 = multipl.
  boxGen->SetPRange(1.,1.); // GeV/c //setPRange vs setPtRange
  boxGen->SetPhiRange(0, 360); // Azimuth angle range [degree]
  boxGen->SetThetaRange(10.,20.); // Polar angle in lab system range [degree]
  boxGen->SetXYZ(0., 0., 0.); // mm o cm ??
  primGen->AddGenerator(boxGen);

  //CbmPrimaryGenerator* primGen = new CbmPrimaryGenerator();
  fRun->SetGenerator(primGen);

  PndConstField *fMagField=new PndConstField();
  fMagField->SetField(0, 0 ,20. ); // values are in kG
  // MinX=-75, MinY=-40,MinZ=-12 ,MaxX=75, MaxY=40 ,MaxZ=124 );  // values are in cm
  fMagField->SetFieldRegion(-500, 500,-500, 500, -200, 2000);

  fRun->SetField(fMagField);
   
  fRun->SetStoreTraj(kTRUE);
   //fRun->SetStoreTraj(kFALSE);
    

  fRun->Init();


  CbmRuntimeDb *rtdb=fRun->GetRuntimeDb();
  Bool_t kParameterMerged=kTRUE;
  CbmParRootFileIo* output=new CbmParRootFileIo(kParameterMerged);
  output->open("tpcMC.param.root");
  rtdb->setOutput(output);

  PndConstPar* fieldPar = (PndConstPar*) rtdb->getContainer("PndConstPar");
  if ( fMagField ) {  fieldPar->SetParameters(fMagField); }
  fieldPar->setInputVersion(fRun->GetRunId(),1);
  fieldPar->setChanged(kTRUE);
  
  rtdb->saveOutput();
  rtdb->print();

  // Transport nEvents
  // -----------------

  
  fRun->Run(nEvents);

  timer.Stop();
  Double_t rtime = timer.RealTime();
  Double_t ctime = timer.CpuTime();
 printf("RealTime=%f seconds, CpuTime=%f seconds\n",rtime,ctime);
}