// Macro created 03/05/2011 by S.Spataro
// It creates an evtgen simulation for the tracking TDR
run_sim_tpc_evt(Int_t nEvents=10, UInt_t seed=0){
  gRandom->SetSeed(seed);
  TStopwatch timer;
  timer.Start();
  gDebug=0;
  // Load basic libraries
  // If it does not work,  please check the path of the libs and put it by hands
  gROOT->LoadMacro("$VMCWORKDIR/gconfig/rootlogon.C");
  rootlogon();
  
  TString digiFile = "all.par";
  TString parFile = "evt_params_tpc.root";
  TString mcMode = "TGeant3";
  FairRunSim *fRun = new FairRunSim();

  // set the MC version used
  // ------------------------

  fRun->SetName(mcMode);
  fRun->SetOutputFile("evt_points_tpc.root");

  // Set the parameters
  //-------------------------------
  TString allDigiFile = gSystem->Getenv("VMCWORKDIR");
  allDigiFile += "/macro/params/";
  allDigiFile += digiFile;
 
  FairRuntimeDb* rtdb = fRun->GetRuntimeDb();
  FairParAsciiFileIo* parIo1 = new FairParAsciiFileIo();
  parIo1->open(allDigiFile.Data(),"in");
  rtdb->setFirstInput(parIo1);        
  Bool_t kParameterMerged=kTRUE;
	
  FairParRootFileIo* output=new FairParRootFileIo(kParameterMerged);
  output->open(parFile);
  rtdb->setOutput(output);
  
  // Set Material file Name
  //-----------------------
  fRun->SetMaterials("media_pnd.geo");

  // Create and add detectors
  //-------------------------
  FairModule *Cave= new PndCave("CAVE");
  Cave->SetGeometryFileName("pndcave.geo");
  fRun->AddModule(Cave); 

  FairModule *Magnet= new PndMagnet("MAGNET");
  //Magnet->SetGeometryFileName("FullSolenoid_V842.root");
  Magnet->SetGeometryFileName("FullSuperconductingSolenoid_v831.root");
  fRun->AddModule(Magnet);
  
  FairModule *Dipole= new PndMagnet("MAGNET");
  Dipole->SetGeometryFileName("dipole.geo");
  fRun->AddModule(Dipole);

  FairModule *Pipe= new PndPipe("PIPE");
  fRun->AddModule(Pipe);

  PndTpcDetector *Tpc = new PndTpcDetector("TPC", kTRUE);
  Tpc->SetGeometryFileName("TPC_V1.1.root");    //new ROOT geometry
  if(mcMode=="TGeant3")  Tpc->SetAliMC();
  fRun->AddModule(Tpc);

  FairDetector *Mvd = new PndMvdDetector("MVD", kTRUE);
  Mvd->SetGeometryFileName("Mvd-2.1_FullVersion.root");
  fRun->AddModule(Mvd);

  PndEmc *Emc = new PndEmc("EMC",kTRUE);
  Emc->SetGeometryVersion(19);
  Emc->SetStorageOfData(kFALSE);
  fRun->AddModule(Emc);

  PndMdt *Muo = new PndMdt("MDT",kTRUE);
  Muo->SetBarrel("fast");
  Muo->SetEndcap("fast");
  Muo->SetMuonFilter("fast");
  Muo->SetMdtMagnet(kTRUE);
  Muo->SetMdtMFIron(kTRUE);
  fRun->AddModule(Muo);

  FairDetector *Gem = new PndGemDetector("GEM", kTRUE);
  Gem->SetGeometryFileName("gem_3Stations.root");
  fRun->AddModule(Gem);

  PndDsk* Dsk = new PndDsk("DSK", kTRUE);
  Dsk->SetGeometryFileName("dsk.root");
  Dsk->SetStoreCerenkovs(kFALSE);
  Dsk->SetStoreTrackPoints(kFALSE);
  fRun->AddModule(Dsk);

  PndDrc *Drc = new PndDrc("DIRC", kTRUE);
  Drc->SetGeometryFileName("dirc_l0_p0.root");
  Drc->SetRunCherenkov(kFALSE); // for fast sim Cherenkov -> kFALSE
  fRun->AddModule(Drc);
 
  FairDetector *Fts= new PndFts("FTS", kTRUE);
  Fts->SetGeometryFileName("fts.geo");
  fRun->AddModule(Fts);
 
  // Create and Set Event Generator
  //-------------------------------

  FairPrimaryGenerator* primGen = new FairPrimaryGenerator();
  primGen->SetTarget(0., 0.5/2.355);
  primGen->SmearVertexZ(kTRUE);
  primGen->SmearGausVertexZ(kTRUE);
  primGen->SetBeam(0., 0., 0.1, 0.1);
  primGen->SmearVertexXY(kTRUE);
  fRun->SetGenerator(primGen);

  // ... generate your signal on the fly
  PndEvtGenDirect *EvtGen = new PndEvtGenDirect("eta_c","EtaCInclusive_2phi.dec");
  EvtGen->SetStoreTree(kFALSE);
  primGen->AddGenerator(EvtGen);

  // Create and Set Magnetic Field
  //-------------------------------
  fRun->SetBeamMom(3.6772);
  PndMultiField *fField= new PndMultiField("FULL");
  fRun->SetField(fField);

  // EMC Hit producer
  //-------------------------------
  PndEmcHitProducer* emcHitProd = new PndEmcHitProducer();
  fRun->AddTask(emcHitProd);
  
  /**Initialize the session*/
  fRun->Init();
  
  rtdb->setOutput(output);
  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);

}