{

  // ========================================================================
  // Verbosity level (0=quiet, 1=event level, 2=track level, 3=debug)
  Int_t iVerbose = 1;

  // Input file (MC events)
  TString inFile = "demoMC.root";


  // Parameter file
  TString parFile = "demoparams.root";

  // Output file
  TString outFile = "demoReco.root";


  // Number of events to process
  Int_t nEvents = 10;
// ----  Load libraries   -------------------------------------------------
  gROOT->LoadMacro("$VMCWORKDIR/gconfig/basiclibs.C");
  basiclibs();
  gSystem->Load("libGeoBase");
  gSystem->Load("libParBase");
  gSystem->Load("libBase");
  gSystem->Load("libMCStack");
  gSystem->Load("libField");
  gSystem->Load("libGen");
  gSystem->Load("libPassive");
  gSystem->Load("libgenfit");
  gSystem->Load("libtpc");
  gSystem->Load("librecotasks");

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

// -----   Timer   --------------------------------------------------------
  TStopwatch timer;
  timer.Start();
  // ------------------------------------------------------------------------



  // -----   Reco run   -------------------------------------------
  CbmRunAna *fRun= new CbmRunAna();
  fRun->SetInputFile(inFile);
  fRun->SetOutputFile(outFile);
  // ------------------------------------------------------------------------
  // -----  Parameter database   --------------------------------------------
  CbmRuntimeDb* rtdb = fRun->GetRuntimeDb();
  CbmParRootFileIo* parInput1 = new CbmParRootFileIo();
  parInput1->open(parFile.Data());
  rtdb->setFirstInput(parInput1);
  fRun->LoadGeometry();

  PndConstField *fMagField=new PndConstField();
  fMagField->SetField(0, 0 ,20. ); // values are in kG
  fMagField->SetFieldRegion(-500, 500,-500, 500, -200, 200);
  fRun->SetField(fMagField);


cout<<"BField="<<fRun->GetField()->GetBz(10,10,10)<<endl;

  // ------------------------------------------------------------------------
  // -----  Reco Sequence   --------------------------------------------

  DemoPatternRecoTask* DemoPR = new DemoPatternRecoTask();
  DemoPR->AddHitBranch(2,"TpcPoint");
//DemoPR->AddHitBranch(3,"MvdWaferMCPoint");

  DemoPR->SetPersistence();
  DemoPR->SetField(fMagField);
  fRun->AddTask(DemoPR);

  DemoKalmanTask* DemoKalman = new DemoKalmanTask();
  DemoKalman->AddHitBranch(2,"TpcPoint");
//DemoKalman->AddHitBranch(3,"MvdWaferMCPoint");

  DemoKalman->SetPersistence();
  fRun->AddTask(DemoKalman);

  TrackVisTask* trkVis = new TrackVisTask();
  trkVis->SetTrackBranchName("TrackPreFit");
  fRun->AddTask(trkVis);

  // -----   Intialise and run   --------------------------------------------
  fRun->Init();
  fRun->Run(0,nEvents);

DemoKalman->WriteHistograms("demohistos.root");

  // ------------------------------------------------------------------------
  // -----   Finish   -------------------------------------------------------
  timer.Stop();
  Double_t rtime = timer.RealTime();
  Double_t ctime = timer.CpuTime();
  cout << endl << endl;
  cout << "Macro finished succesfully." << endl;
  cout << "Output file is "    << outFile << endl;
  cout << "Parameter file is " << parFile << endl;
  cout << "Real time " << rtime << " s, CPU time " << ctime << " s" << endl;
  cout << endl;
  // ------------------------------------------------------------------------
}