AllNeutronAnalysis_save.C

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int AllNeutronAnalysis()
{

  // -----  Load libraries   ------------------------------------------------
//``gSystem->Load("fstream.h");
   gROOT->Macro("$VMCWORKDIR/gconfig/rootlogon.C");


   gSystem->Load("libHypGe");

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

        TString Filename = "$SIMDATADIR/TripleBall40Offset10_urqmd_pbarC_1_5000Evts.root";


//Output Files
        //TString Path = getenv("SIMDATADIR");
        TString outfile= "$SIMDATADIR/Data_Marcell/TripleBall40Offset10_urqmd_pbarC_1_5000Evts_spectrum.root";//"$SIMDATADIR/Data_Marcell/TripleBall40Offset10_urqmd_pbarC_1_5000Evts_spectrum.root";
        TFile* g = new TFile(Filename);
        TFile* fi = new TFile(outfile,"RECREATE");



   //photons from hyp electromag. decay
  TTree *b=(TTree *) g->Get("pndsim") ;
  TClonesArray* hit_bar=new TClonesArray("PndHypGePoint");
  b->SetBranchAddress("HypGePoint",&hit_bar);//Branch names
  TClonesArray* mc_bar=new TClonesArray("PndMCTrack");
  b->SetBranchAddress("MCTrack",&mc_bar);//Branch names




  //****photons from hyp elect. decay

        string Name = "Neutrons hitting the germaniums";
        TH1D* hNHits = new TH1D("hNHits",Name.c_str(),180, 90,180);
        TH1D* hNAll = new TH1D("hNAll","All Neutrons",180, 90,180);


        bool verbose = false;
        Int_t MotherId,Motherpdg;



        TVector3 vecs,pos;
        int mcpdg = -1,ev;
        Double_t mult,En,Eng,Enth;

        //vector<int> event;
        int count;
        Int_t nEvents = b->GetEntriesFast();
        cout<< "Number of Simulated Events: "<<nEvents<<endl;


        Double_t Resolution = 2.;       //keV
        for (Int_t k=0; k<nEvents; k++)
        {
                        //cout << k << endl;
                Eng=0.;
                b->GetEntry(k);
                if (!((k*100)% nEvents))
                {
                        cout << k << endl;
                }
            //if(verbose) cout<<"Event No "<<j<<endl;


                        //cout << hit_bar->GetEntriesFast()<<endl;
                        PndHypGePoint *hitgam0=(PndHypGePoint*)hit_bar->At(0);
                        PndHypGePoint *hitgam1=(PndHypGePoint*)hit_bar->At(1);
                        cout << hitgam0 << endl;
                        if (hitgam0 != 0 && hitgam1 !=0)
                        {
                        if(hitgam0->GetTrackID() != hitgam1->GetTrackID())
                        {
                                continue;
                        }
                        PndMCTrack *mcgam = (PndMCTrack*)mc_bar->At(hitgam0->GetTrackID());
                        if (mcgam->GetPdgCode()!=2112)
                        {
                                continue;
                        }

                        hNHits->Fill(180/TMath::Pi()*TMath::ACos(hitgam0->GetPz()/TMath::Sqrt(hitgam0->GetPx()*hitgam0->GetPx()+hitgam0->GetPy()*hitgam0->GetPy()+hitgam0->GetPz()* hitgam0->GetPz())));                //Fill spectrum
                        if(mcgam->GetMotherID() ==-1)
                        {
                                TVector3 NAllMom = mcgam->GetMomentum();
                                hNAll->Fill(180/TMath::Pi()*NAllMom.Theta());
                        }
                }

           if (hitgam0 != 0 )
                        {
                        if(hitgam0->GetTrackID() != hitgam1->GetTrackID())
                        {
                                continue;
                        }
                        PndMCTrack *mcgam = (PndMCTrack*)mc_bar->At(hitgam0->GetTrackID());
                        if (mcgam->GetPdgCode()!=2112)
                        {
                                continue;
                        }

                        hNHits->Fill(180/TMath::Pi()*TMath::ACos(hitgam0->GetPz()/TMath::Sqrt(hitgam0->GetPx()*hitgam0->GetPx()+hitgam0->GetPy()*hitgam0->GetPy()+hitgam0->GetPz()* hitgam0->GetPz())));                //Fill spectrum
                        if(mcgam->GetMotherID() ==-1)
                        {
                                TVector3 NAllMom = mcgam->GetMomentum();
                                hNAll->Fill(180/TMath::Pi()*NAllMom.Theta());
                        }
                }

        }// end for j (events)



  hNHits->Draw();

  //Analysis of spectrum
  hNHits->Write();
        hNAll->Write();
        fi->Close();




        // -----   Finish   -------------------------------------------------------
        timer.Stop();
        Double_t rtime = timer.RealTime();
        Double_t ctime = timer.CpuTime();
        cout << endl << endl;
        cout << "Macro finished succesfully." << endl;

        cout << "Real time " << rtime << " s, CPU time " << ctime << " s" << endl;
        cout << endl;
        // ------------------------------------------------------------------------

  return 0;
}