void localTreeFRA() {

  gROOT->Macro("$VMCWORKDIR/gconfig/rootlogon.C");

  TString vmcPath = gSystem->Getenv("VMCWORKDIR");
  TString simPath = gSystem->Getenv("SIMPATH");
  
  // Set the include paths
  gROOT->ProcessLine(Form(".include %s/gem",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/pnddata",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/pnddata/GemData",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/fairtools",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/base",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/parbase",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/trackbase",vmcPath.Data()));
  gROOT->ProcessLine(Form(".include %s/geobase",vmcPath.Data()));

  TChain *chain = new TChain("cbmsim");
  chain->Add(TString::Format("%s/Gem_3Stations_15GeV_n1000_digi.root", gSystem->WorkingDirectory()));
  chain->Add(TString::Format("%s/Gem_3Stations_15GeV_n1100_digi.root", gSystem->WorkingDirectory()));
  chain->Add(TString::Format("%s/Gem_3Stations_15GeV_n1200_digi.root", gSystem->WorkingDirectory()));
  chain->Add(TString::Format("%s/Gem_3Stations_15GeV_n1300_digi.root", gSystem->WorkingDirectory()));
  chain->Add(TString::Format("%s/Gem_3Stations_15GeV_n1400_digi.root", gSystem->WorkingDirectory()));
  
  Int_t nofChainEntries = chain->GetEntries();
  cout << "the chain seems to have " << nofChainEntries << " entries" << endl;

  TList* lll = new TList();

  TFile* fff = new TFile("Gem_3Stations_15GeV_n6000_hitsSelectorLOCAL.root","RECREATE");

  lll->Add(chain);
  lll->Add(fff);
  
  gROOT->ProcessLine(".L treeFairRunAna.C+");
  treeFairRunAna* sss = new treeFairRunAna();

  sss->SetInputList(lll);

  TTree* ttt = new TTree();

  sss->Begin(ttt);
  sss->SlaveBegin(ttt);

  for ( Int_t ieve = 0 ; ieve < nofChainEntries ; ieve++ ) {
    sss->Process(ieve);
  }

  sss->SlaveTerminate(ttt);
  sss->Terminate(ttt);
}