runDigi(Int_t nEvents=10000, Float_t mom = 15., Int_t mode =1, UInt_t seed=0)
{

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

  // Input file (MC events)
  TString inFile =  Form("points_sttcombi_%d.root",seed);

  // Parameter file
  TString parFile =  Form("params_sttcombi_%d.root",seed);

  // Output file
  TString outFile =  Form("digi_sttcombi_%d.root",seed);

  // Number of events to process
  Int_t nEvents = 0;
  TDatime *time = new TDatime();
  gRandom->SetSeed(seed+time->GetTime());
 
  // ----  Load libraries   -------------------------------------------------
  //  gROOT->LoadMacro("$VMCWORKDIR/gconfig/rootlogon.C");
  //  rootlogon();
  TString sysFile = gSystem->Getenv("VMCWORKDIR");
  // ------------------------------------------------------------------------

  // ---  Now choose concrete engines for the different tasks   -------------
  // ------------------------------------------------------------------------

  // In general, the following parts need not be touched
  // ========================================================================

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

  // -----   Digitization run   -------------------------------------------
  FairRunAna *fRun= new FairRunAna();
  fRun->SetInputFile(inFile);
  fRun->SetOutputFile(outFile);
  
  // ------------------------------------------------------------------------

  // -----  Parameter database   --------------------------------------------
  TString allDigiFile = sysFile+"/macro/params/all.par";

  FairRuntimeDb* rtdb = fRun->GetRuntimeDb();
  FairParRootFileIo* parInput1 = new FairParRootFileIo();
  parInput1->open(parFile.Data());
	
  FairParAsciiFileIo* parIo1 = new FairParAsciiFileIo();
  parIo1->open(allDigiFile.Data(),"in");
        
  //  rtdb->setFirstInput(parInput1);
  //  rtdb->setSecondInput(parIo1);

  rtdb->setFirstInput(parIo1);
  rtdb->setSecondInput(parInput1);


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

  // -----   MDV digi producers   --------------------------------- 
  //PndMvdDigiTask* mvddigi = new PndMvdDigiTask();
  PndMvdStripHitProducer* mvddigi = new PndMvdStripHitProducer();
  mvddigi->SetVerbose(iVerbose);
  fRun->AddTask(mvddigi);

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

  rtdb->saveOutput();
  rtdb->print();

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

  // -----   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;
  // ------------------------------------------------------------------------


}