HistoManager.cc

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// $Id: HistoManager.cc 78171 2013-12-04 13:22:18Z gunter $
//
//---------------------------------------------------------------------------
//
// ClassName:   HistoManager
//
// Author:      V.Ivanchenko 01.09.2010
//
//----------------------------------------------------------------------------
//

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#include "HistoManager.hh"
#include "G4UnitsTable.hh"
#include "Histo.hh"
#include "G4Step.hh"
#include "G4LossTableManager.hh"
#include "G4ElectronIonPair.hh"
#include "G4SystemOfUnits.hh"
#include "G4PhysicalConstants.hh"

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HistoManager* HistoManager::fManager = 0;

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HistoManager* HistoManager::GetPointer()
{
  if(!fManager) {
    fManager = new HistoManager();
  }
  return fManager;
}

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HistoManager::HistoManager()
 : fHisto(0),
   fElIonPair(0)
{
  fNHisto      = 2;
  fVerbose     = 1;
  fMaxEnergy   = 100.*keV;
  fBinsE       = 100;
  fBinsCluster = 200;

  // normalisation to PAI
  fFactorALICE = 325;

  // normalisation to Opt0
  //fFactorALICE = 275;

  fEvt = 0.0;
  fTotStepGas = 0.0;
  fTotCluster = 0.0;
  fMeanCluster= 0.0;
  fOverflow   = 0.0;

  fTotEdep = 0.0;
  fStepGas = 0;
  fCluster = 0;

  fHistoBooked = false;

  fHisto     = new Histo();
  fElIonPair = G4LossTableManager::Instance()->ElectronIonPair();
}

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HistoManager::~HistoManager()
{
  delete fHisto;
}

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void HistoManager::BeginOfRun()
{
  // initilise scoring
  fEvt = 0.0;
  fTotStepGas = 0.0;
  fTotCluster = 0.0;
  fMeanCluster= 0.0;
  fOverflow   = 0.0;

  if(fHisto->IsActive() && !fHistoBooked) { 

    fHisto->Add1D("10","Energy deposition in detector (keV)",
          fBinsE,0.0,fMaxEnergy/keV,1.0);
    fHisto->Add1D("11","Number of primary clusters",
          fBinsCluster,-0.5,fBinsCluster-0.5,1.0);
    fHisto->Add1D("12","Energy deposition in detector (ADC)",
          200,0.0,2000,1.0);

    fHisto->Activate(0, true); 
    fHisto->Activate(1, true); 
    fHisto->Activate(2, true); 
  }
  fHisto->Book();

  fEgas.resize(fBinsE,0.0);

  if(fVerbose > 0) {
    G4cout << "HistoManager: Histograms are booked and run has been started"
           << G4endl;
    G4cout << " BinsCluster= " << fBinsCluster << "    BinsE= " <<  fBinsE
           << "   Emax(keV)= " << fMaxEnergy/keV << G4endl;
  }
}

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void HistoManager::EndOfRun()
{
  G4double norm = fEvt;
  if(fEvt > 0.0) { norm = 1.0/norm; }

  fTotStepGas  *= norm;
  fTotCluster  *= norm;
  fMeanCluster *= norm;
  fOverflow    *= norm;

  G4double y1 = 0.0;
  G4double y2 = 0.0;

  G4double de = fMaxEnergy/G4double(fBinsE);  
  G4double x1 = -de*0.5; 

  for(G4int j=0; j<fBinsE; ++j) {
    x1 += de;
    G4double y = fEgas[j]*norm;
    y1 += y*x1;
    y2 += y*x1*x1;
  }
  G4double norm1 = G4double(fBinsE);
  if(norm1 > 0.0) { norm1 = 1.0/norm1; }
  y1 *= norm1;
  y2 *= norm1;
  y2 -= y1*y1;
  if(y2 >= 0.0) { y2 = std::sqrt(y2); }

  G4cout << " ================== run summary =====================" << G4endl;
  G4int prec = G4cout.precision(5);
  G4cout << "   End of Run TotNbofEvents    = " 
     << G4int(fEvt) << G4endl;
  G4cout << "   Energy(keV) per ADC channel = " 
     << 1.0/(keV*fFactorALICE) << G4endl;
  /*
  G4double p1 = 1*GeV;
  G4double p2 = 3*GeV;
  G4double mass = proton_mass_c2;
  G4cout << std::sqrt(p1*p1 + mass*mass) - mass << "   " 
     << std::sqrt(p2*p2 + mass*mass) - mass << G4endl; 
  */
  G4cout << G4endl;
  G4cout << "   Mean energy deposit in absorber = " <<
           y1/keV << " +- " << y2*std::sqrt(norm)/keV << " keV; ";
  if(y1 > 0.0) { G4cout << "   RMS/Emean = " << y2/y1; }
  G4cout << G4endl;
  G4cout << "   Mean number of steps in absorber= " 
         << fTotStepGas << ";  mean number of ion-clusters = " 
     << fTotCluster    
     << " MeanCluster= " << fMeanCluster    
         << G4endl;
  G4cout << G4endl;

  G4cout << " ====== Energy deposit distribution   Noverflows= " << fOverflow 
         << " ====== " << G4endl ;
  G4cout << " bin nb      Elow      entries     normalized " << G4endl;

  std::ofstream fileOut("distribution.out", std::ios::out );
  fileOut.setf( std::ios::scientific, std::ios::floatfield );

  x1 = 0.0;

  fileOut << fBinsE << G4endl;
 
  for(G4int j=0; j<fBinsE; ++j) 
  {
    G4cout << std::setw(5) << j << std::setw(10) << x1/keV 
           << std::setw(12) << fEgas[j] << std::setw(12) << fEgas[j]*norm 
           << G4endl ;
    fileOut << x1/keV << "\t" << fEgas[j] << G4endl;
    x1 += de;
  }
  G4cout.precision(prec);

  // normalise histograms
  if(fHisto->IsActive() && !fHistoBooked) { 
    fHisto->ScaleH1(0,norm);
    fHisto->ScaleH1(1,norm);
    //    fHisto->ScaleH1(2,0.05);
    fHisto->ScaleH1(2,0.1);
    fHisto->Save();
  }
  G4cout << " ================== run end ==========================" << G4endl;
}

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void HistoManager::BeginOfEvent()
{
  fEvt += 1.0;
  fTotEdep = 0.0;
  fStepGas = 0;
  fCluster = 0;
}

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void HistoManager::EndOfEvent()
{
  fTotStepGas += fStepGas;
  fTotCluster += fCluster;
  
  G4int idx = G4int(fTotEdep*fBinsE/fMaxEnergy);
  if(idx < 0) { idx = 0; }
  if(idx >= fBinsE) { fOverflow += 1.0; }
  else { fEgas[idx] += 1.0; }

  // fill histo
  fHisto->Fill(0,fTotEdep/keV,1.0);
  fHisto->Fill(1,fCluster,1.0);
  fHisto->Fill(2,fTotEdep*fFactorALICE/keV,1.0);
}

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void HistoManager::AddEnergy(G4double edep, const G4Step* step)
{
  if(1 < fVerbose) {
    G4cout << "HistoManager::AddEnergy: e(keV)= " << edep/keV
           << G4endl;
  }
  fTotEdep += edep;
  if(step) {
    if(1 == step->GetTrack()->GetTrackID()) { fStepGas += 1.0; }

    fMeanCluster += fElIonPair->MeanNumberOfIonsAlongStep(step);
    fCluster += fElIonPair->SampleNumberOfIonsAlongStep(step);
  }
}

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