extended/analysis/AnaEx02/src/HistoManager.cc

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/// \file analysis/AnaEx02/src/HistoManager.cc
/// \brief Implementation of the HistoManager class
//
// $Id: HistoManager.cc 74272 2013-10-02 14:48:50Z gcosmo $
// GEANT4 tag $Name: geant4-09-04 $
// 
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#include <TH1D.h>
#include <TFile.h>
#include <TTree.h>
#include <CLHEP/Units/SystemOfUnits.h>

#include "HistoManager.hh"
#include "G4UnitsTable.hh"

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HistoManager::HistoManager()
:fRootFile(0), 
 fNtuple1(0), fNtuple2(0), 
 fEabs(0), fEgap(0) ,fLabs(0), fLgap(0)
{
      
  // histograms
  for (G4int k=0; k<MaxHisto; k++) fHisto[k] = 0;
    
  // ntuple
  fNtuple1 = 0;
  fNtuple2 = 0;
}

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HistoManager::~HistoManager()
{
  if ( fRootFile ) delete fRootFile;
}

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void HistoManager::book()
{ 
 // Creating a tree container to handle histograms and ntuples.
 // This tree is associated to an output file.
 //
 G4String fileName = "AnaEx02.root";
 fRootFile = new TFile(fileName,"RECREATE");
 if(!fRootFile) {
   G4cout << " HistoManager::book :" 
          << " problem creating the ROOT TFile "
          << G4endl;
   return;
 }
   
 fHisto[1] = new TH1D("1", "Edep in absorber", 100, 0., 800*CLHEP::MeV);
 if (!fHisto[1]) G4cout << "\n can't create histo 1" << G4endl;
 fHisto[2] = new TH1D("2", "Edep in gap", 100, 0., 100*CLHEP::MeV);
 if (!fHisto[2]) G4cout << "\n can't create histo 2" << G4endl;
 fHisto[3] = new TH1D("3", "trackL in absorber", 100, 0., 1*CLHEP::m);
 if (!fHisto[3]) G4cout << "\n can't create histo 3" << G4endl;
 fHisto[4] = new TH1D("4", "trackL in gap", 100, 0., 50*CLHEP::cm);
 if (!fHisto[4]) G4cout << "\n can't create histo 4" << G4endl;  

 // create 1st ntuple in subdirectory "tuples"
 //
 fNtuple1 = new TTree("101", "Edep");
 fNtuple1->Branch("Eabs", &fEabs, "Eabs/D");
 fNtuple1->Branch("Egap", &fEgap, "Egap/D");

 // create 2nd ntuple in subdirectory "tuples"
 //
 fNtuple2 = new TTree("102", "TrackL");
 fNtuple2->Branch("Labs", &fLabs, "Labs/D");
 fNtuple2->Branch("Lgap", &fLgap, "Lgap/D");

 
 G4cout << "\n----> Histogram file is opened in " << fileName << G4endl;
}

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void HistoManager::save()
{ 
  if (fRootFile) {
    fRootFile->Write();       // Writing the histograms to the file
    fRootFile->Close();        // and closing the tree (and the file)
    G4cout << "\n----> Histogram Tree is saved \n" << G4endl;
  }
}

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void HistoManager::FillHisto(G4int ih, G4double xbin, G4double weight)
{
  if (ih >= MaxHisto) {
    G4cout << "---> warning from HistoManager::FillHisto() : histo " << ih
           << " does not exist. (xbin=" << xbin << " weight=" << weight << ")"
           << G4endl;
    return;
  }
 if  (fHisto[ih]) { fHisto[ih]->Fill(xbin, weight); }
}

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void HistoManager::Normalize(G4int ih, G4double fac)
{
  if (ih >= MaxHisto) {
    G4cout << "---> warning from HistoManager::Normalize() : histo " << ih
           << " does not exist. (fac=" << fac << ")" << G4endl;
    return;
  }
  if (fHisto[ih]) fHisto[ih]->Scale(fac);
}

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void HistoManager::FillNtuple(G4double energyAbs, G4double energyGap,
                              G4double trackLAbs , G4double trackLGap )
{
 fEabs = energyAbs;
 fEgap = energyGap;
 fLabs = trackLAbs;
 fLgap = trackLGap;

  if (fNtuple1) fNtuple1->Fill();
  if (fNtuple2) fNtuple2->Fill();
}

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void HistoManager::PrintStatistic()
{
  if(fHisto[1]) {
    G4cout << "\n ----> print histograms statistic \n" << G4endl;
    
    G4cout 
    << " EAbs : mean = " << G4BestUnit(fHisto[1]->GetMean(), "Energy") 
            << " rms = " << G4BestUnit(fHisto[1]->GetRMS(),  "Energy") << G4endl;
    G4cout                
    << " EGap : mean = " << G4BestUnit(fHisto[2]->GetMean(), "Energy") 
            << " rms = " << G4BestUnit(fHisto[2]->GetRMS(),  "Energy") << G4endl;
    G4cout 
    << " LAbs : mean = " << G4BestUnit(fHisto[3]->GetMean(), "Length") 
            << " rms = " << G4BestUnit(fHisto[3]->GetRMS(),  "Length") << G4endl;
    G4cout 
    << " LGap : mean = " << G4BestUnit(fHisto[4]->GetMean(), "Length") 
            << " rms = " << G4BestUnit(fHisto[4]->GetRMS(),  "Length") << G4endl;

  }
}

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