/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/SimG4CMS/HcalTestBeam/src/HcalTB02Analysis.cc

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// -*- C++ -*-
//
// Package:     HcalTestBeam
// Class  :     HcalTB02Analysis
//
// Implementation:
//     Main analysis class for Hcal Test Beam 2002 Analysis
//
// Original Author:
//         Created:  Sun May 21 10:14:34 CEST 2006
// $Id: HcalTB02Analysis.cc,v 1.5 2009/05/24 15:31:15 fabiocos Exp $
//
  
// system include files
#include <cmath>
#include <iostream>
#include <iomanip>
  
// user include files
#include "SimG4CMS/HcalTestBeam/interface/HcalTB02Analysis.h"

// to retreive hits
#include "SimG4CMS/Calo/interface/CaloG4Hit.h"
#include "SimG4CMS/Calo/interface/CaloG4HitCollection.h"
#include "SimG4CMS/HcalTestBeam/interface/HcalTB02HcalNumberingScheme.h"
#include "SimG4CMS/HcalTestBeam/interface/HcalTB02XtalNumberingScheme.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/Utilities/interface/RandomNumberGenerator.h"
#include "CLHEP/Random/RandGaussQ.h"
#include "FWCore/Utilities/interface/Exception.h"

#include "G4SDManager.hh"
#include "G4VProcess.hh"
#include "G4HCofThisEvent.hh"
#include "CLHEP/Units/GlobalSystemOfUnits.h"
#include "CLHEP/Units/GlobalPhysicalConstants.h"

//
// constructors and destructor
//

HcalTB02Analysis::HcalTB02Analysis(const edm::ParameterSet &p): histo(0) {

  edm::ParameterSet m_Anal = p.getParameter<edm::ParameterSet>("HcalTB02Analysis");
  hcalOnly      = m_Anal.getUntrackedParameter<bool>("HcalClusterOnly",true);
  names         = m_Anal.getParameter<std::vector<std::string> >("Names");
  
  produces<HcalTB02HistoClass>();

  edm::LogInfo("HcalTBSim") << "HcalTB02Analysis:: Initialised as observer of "
                            << "BeginOfJob/BeginOfEvent/EndOfEvent with "
                            << "Parameter values:\n \thcalOnly = " << hcalOnly;

  histo  = new HcalTB02Histo(m_Anal);
} 
   
HcalTB02Analysis::~HcalTB02Analysis() {

  finish();

  if (histo)   {
    delete histo;
    histo  = 0;
  }
  edm::LogInfo("HcalTBSim") << "HcalTB02Analysis is deleting";
}

//
// member functions
//

void HcalTB02Analysis::produce(edm::Event& e, const edm::EventSetup&) {

  std::auto_ptr<HcalTB02HistoClass> product(new HcalTB02HistoClass);
  fillEvent(*product);
  e.put(product);
}

void HcalTB02Analysis::update(const BeginOfEvent * evt) {
 
  edm::LogInfo("HcalTBSim") << "HcalTB02Analysis: =====> Begin of event = "
                            << (*evt) ()->GetEventID();
  clear();
}

void HcalTB02Analysis::update(const EndOfEvent * evt) {

  edm::Service<edm::RandomNumberGenerator> rng;
  if ( ! rng.isAvailable()) {
    throw cms::Exception("Configuration")
      << "HcalTB02Analysis requires the RandomNumberGeneratorService\n"
      << "which is not present in the configuration file. "
      << "You must add the service\n in the configuration file or "
      << "remove the modules that require it.";
  }
  CLHEP::RandGaussQ  randGauss(rng->getEngine());

  // Look for the Hit Collection
  LogDebug("HcalTBSim") << "HcalTB02Analysis::Fill event " 
                        << (*evt)()->GetEventID();

  // access to the G4 hit collections 
  G4HCofThisEvent* allHC = (*evt)()->GetHCofThisEvent();
  int ihit = 0;    
 
  // HCAL
  std::string sd = names[0];
  int HCHCid = G4SDManager::GetSDMpointer()->GetCollectionID(sd);
  CaloG4HitCollection* theHCHC = (CaloG4HitCollection*) allHC->GetHC(HCHCid);
  HcalTB02HcalNumberingScheme *org = new HcalTB02HcalNumberingScheme();   
  LogDebug("HcalTBSim") << "HcalTB02Analysis :: Hit Collection for " << sd 
                        << " of ID " << HCHCid << " is obtained at " <<theHCHC;

  int nentries = 0;
  nentries = theHCHC->entries();
  if (nentries==0) return;

  int xentries = 0;  
  int XTALSid=0;
  CaloG4HitCollection* theXTHC=0;

  if (!hcalOnly) {
    // XTALS
    sd      = names[1];
    XTALSid = G4SDManager::GetSDMpointer()->GetCollectionID(sd);
    //    assert (XTALSid != 0);
    theXTHC = (CaloG4HitCollection*) allHC->GetHC(XTALSid);
    //    assert (theXTHC != 0);
    //HcalTB02XtalNumberingScheme *xorg = new HcalTB02XtalNumberingScheme();
    LogDebug("HcalTBSim") << "HcalTB02Analysis :: Hit Collection for " << sd
                          << " of ID " << XTALSid << " is obtained at " 
                          << theXTHC;
    xentries = theXTHC->entries();
    if (xentries==0) return;
  }

  LogDebug("HcalTBSim") << "HcalTB02Analysis :: There are " << nentries 
                        << " HCal hits, and" << xentries  << " xtal hits";

  float ETot=0., xETot=0.;
  //float maxE = 0.; 
  //int maxI=0, 
  int scintID=0, xtalID=0;

  // HCAL

  if (HCHCid >= 0 && theHCHC > 0) {
    for ( ihit = 0; ihit < nentries; ihit++) {

      CaloG4Hit* aHit = (*theHCHC)[ihit]; 
      scintID     = aHit->getUnitID();
      int layer   = org->getlayerID(scintID);
      float enEm  = aHit->getEM();
      float enhad = aHit->getHadr();
      
      if (layer==0) {
        enEm =enEm/2.;
        enhad=enhad/2.;
      }

      energyInScints[scintID]+= enEm + enhad;
      primaries[aHit->getTrackID()]+= enEm + enhad;
      float time = aHit->getTimeSliceID();
      if (time > maxTime) maxTime=(int)time;
      histo->fillAllTime(time);   
      
    }           
 
    //
    // Profile
    //

    float TowerEne[8][18], TowerEneCF[8][18], LayerEne[19], EnRing[100];
    for (int iphi=0 ; iphi<8; iphi++) {
      for (int jeta=0 ; jeta<18; jeta++) {
        TowerEne[iphi][jeta]=0.;
        TowerEneCF[iphi][jeta]=0.;
      }
    }
    
    for (int ilayer=0; ilayer<19; ilayer++) LayerEne[ilayer]=0.;
    for (int iring=0; iring<100; iring++) EnRing[iring]=0.;
    
    for (std::map<int,float>::iterator is = energyInScints.begin();
         is!= energyInScints.end(); is++) {

      ETot = (*is).second;

      int layer = org->getlayerID((*is).first);

      if ( (layer!=17) && (layer!=18) )  {
            
        float eta = org->getetaID((*is).first);
        float phi = org->getphiID((*is).first);
            
        SEnergy += ETot;
        TowerEne[(int)phi][(int)eta] += ETot;

        TowerEneCF[(int)phi][(int)eta] += ETot*(1.+ 0.1*randGauss.fire() );
        double dR=0.08727*std::sqrt( (eta-8.)*(eta-8.) + (phi-3.)*(phi-3.) );
        EnRing[(int)(dR/0.01)] += ETot;
      }

      LayerEne[layer] += ETot;
        
    }
    
    for (int ilayer=0 ; ilayer<19 ; ilayer++) {
      histo->fillProfile(ilayer,LayerEne[ilayer]/GeV);
    }
    
    for (int iring=0; iring<100; iring++)
      histo->fillTransProf(0.01*iring+0.005,EnRing[iring]/GeV);
    
    for (int iphi=0 ; iphi<8; iphi++) {
      for (int jeta=0 ; jeta<18; jeta++) {
        
        //SEnergyN += TowerEneCF[iphi][jeta] + 3.2*randGauss.fire(); // LHEP
        SEnergyN += TowerEneCF[iphi][jeta] + 3.*randGauss.fire(); // QGSP

        //double dR=0.08727*sqrt( (jeta-8.)*(jeta-8.)+(iphi-3.)*(iphi-3.) );
        //cout.testOut << " phi= " << iphi << " eta= " << jeta 
        //           << " TowerEne[iphi,jeta]= " << TowerEne[iphi][jeta] 
        //           << "dR= "  << dR << endl;
        
        //double Rand = 3.2*randGauss.fire(); // LHEP
        double Rand = 3.*randGauss.fire(); // QGSP
        
        if ( (iphi>=0) && (iphi<7) ) {
          if ( (jeta>=5) && (jeta<12) ) {
                
            E7x7Matrix += TowerEne[iphi][jeta];
            E7x7MatrixN += TowerEneCF[iphi][jeta] + Rand;
                
            if ( (iphi>=1) && (iphi<6) ) {
              if ( (jeta>=6) && (jeta<11) ) {
                        
                E5x5Matrix += TowerEne[iphi][jeta];
                E5x5MatrixN += TowerEneCF[iphi][jeta] + Rand;
                        
              }
            }
                
          }
        }
        
      }
    }
    
    //
    // Find Primary info:
    //  
    int trackID = 0;
    G4PrimaryParticle* thePrim=0;
    G4int nvertex = (*evt)()->GetNumberOfPrimaryVertex();
    LogDebug("HcalTBSim") << "HcalTB02Analysis :: Event has " << nvertex 
                          << " vertex";
    if (nvertex==0)
      edm::LogWarning("HcalTBSim") << "HcalTB02Analysis:: End Of Event  "
                                   << "ERROR: no vertex";

    for (int i = 0 ; i<nvertex; i++) {
        
      G4PrimaryVertex* avertex = (*evt)()->GetPrimaryVertex(i);
      if (avertex == 0) {
        edm::LogWarning("HcalTBSim") << "HcalTB02Analysis:: End Of Event "
                                     << "ERROR: pointer to vertex = 0";
      } else {
        int npart = avertex->GetNumberOfParticle();
        LogDebug("HcalTBSim") << "HcalTB02Analysis::Vertex number :" << i 
                              << " with " << npart << " particles";
        if (thePrim==0) thePrim=avertex->GetPrimary(trackID);
      }
    }
    
    double px=0.,py=0.,pz=0.;
    
    if (thePrim != 0) {
      px = thePrim->GetPx();
      py = thePrim->GetPy();
      pz = thePrim->GetPz();
      pInit = std::sqrt(pow(px,2.)+pow(py,2.)+pow(pz,2.));
      if (pInit==0) {
        edm::LogWarning("HcalTBSim") << "HcalTB02Analysis:: End Of Event "
                                     << " ERROR: primary has p=0 ";
      } else {   
        float costheta = pz/pInit;
        float theta = acos(std::min(std::max(costheta,float(-1.)),float(1.)));
        eta = -log(tan(theta/2));
        if (px != 0) phi = atan(py/px);  
      }
      particleType      = thePrim->GetPDGcode();
    } else {
      LogDebug("HcalTBSim") << "HcalTB02Analysis:: End Of Event ERROR: could"
                            << " not find primary ";
    }
    
    CaloG4Hit* firstHit =(*theHCHC)[0];
    incidentEnergy = (firstHit->getIncidentEnergy()/GeV);
    
  }// number of Hits > 0

  if (!hcalOnly) {

    // XTALS

    if (XTALSid >= 0 && theXTHC > 0) {
      for (int xihit = 0; xihit < xentries; xihit++) {

        CaloG4Hit* xaHit = (*theXTHC)[xihit]; 

        float xenEm = xaHit->getEM();
        float xenhad = xaHit->getHadr();
        xtalID = xaHit->getUnitID();
          
        energyInCrystals[xtalID]+= xenEm + xenhad;
      }
      
      float xCrysEne[7][7];
      for (int irow=0 ; irow<7; irow++) {
        for (int jcol=0 ; jcol<7; jcol++) {
          xCrysEne[irow][jcol]=0.;
        }
      }
      
      for (std::map<int,float>::iterator is = energyInCrystals.begin();
           is!= energyInCrystals.end(); is++) {
        int xtalID = (*is).first;
        xETot = (*is).second;
            
        int irow = (int)(xtalID/100.);
        int jcol = (int)(xtalID-100.*irow);
        
        xSEnergy += xETot;
        xCrysEne[irow][jcol] = xETot;
            
        float dR=std::sqrt( 0.01619*0.01619*(jcol-3)*(jcol-3) + 
                            0.01606*0.01606*(irow-3)*(irow-3) );
        histo->fillTransProf(dR,xETot*1.05);
            
        if ( (irow>0) && (irow<6) ) {
          if ( (jcol>0) && (jcol<6) ) {
                    
            xE5x5Matrix += xCrysEne[irow][jcol];
            xE5x5MatrixN += xCrysEne[irow][jcol] + 108.5*randGauss.fire();
                    
            if ( (irow>1) && (irow<5) ) {
              if ( (jcol>1) && (jcol<5) ) {             
                xE3x3Matrix += xCrysEne[irow][jcol];
                xE3x3MatrixN += xCrysEne[irow][jcol] +108.5*randGauss.fire();
              }    
            }
          }
        }  
        
      }      

      if (!hcalOnly) {
        //      assert(theXTHC);
        if ( theXTHC != 0 ) {
          CaloG4Hit* xfirstHit =(*theXTHC)[0];
          xIncidentEnergy = xfirstHit->getIncidentEnergy()/GeV;
        }
      }
      
    }// number of Hits > 0

  }

  int iEvt = (*evt)()->GetEventID();
  if (iEvt < 10) 
    std::cout << " Event " << iEvt << std::endl;
  else if ((iEvt < 100) && (iEvt%10 == 0)) 
    std::cout << " Event " << iEvt << std::endl;
  else if ((iEvt < 1000) && (iEvt%100 == 0)) 
    std::cout << " Event " << iEvt << std::endl;
  else if ((iEvt < 10000) && (iEvt%1000 == 0)) 
    std::cout << " Event " << iEvt << std::endl;
}

void HcalTB02Analysis::fillEvent(HcalTB02HistoClass& product) {

  //Beam information
  product.set_Nprim(float(primaries.size()));
  product.set_partType(particleType);
  product.set_Einit(pInit/GeV);
  product.set_eta(eta);
  product.set_phi(phi);
  product.set_Eentry(incidentEnergy);

  //Calorimeter energy
  product.set_ETot(SEnergy/GeV );
  product.set_E7x7(E7x7Matrix/GeV );
  product.set_E5x5(E5x5Matrix/GeV );
  product.set_ETotN(SEnergyN/GeV);
  product.set_E7x7N(E7x7MatrixN/GeV );
  product.set_E5x5N(E5x5MatrixN/GeV );
  product.set_NUnit(float(energyInScints.size()));
  product.set_Ntimesli(float(maxTime));

  //crystal information
  product.set_xEentry(xIncidentEnergy);
  product.set_xNUnit(float(energyInCrystals.size()));
  product.set_xETot(xSEnergy/GeV);
  product.set_xETotN(xSEnergyN/GeV);
  product.set_xE5x5(xE5x5Matrix/GeV);
  product.set_xE3x3(xE3x3Matrix/GeV);
  product.set_xE5x5N(xE5x5MatrixN/GeV);
  product.set_xE3x3N(xE3x3MatrixN/GeV);
}

void HcalTB02Analysis::clear() {

  primaries.clear();
  particleType = 0;
  pInit = eta = phi = incidentEnergy = 0;

  SEnergy = E7x7Matrix = E5x5Matrix = SEnergyN = 0;
  E7x7MatrixN = E5x5MatrixN = 0;
  energyInScints.clear();
  maxTime = 0;

  xIncidentEnergy = 0;
  energyInCrystals.clear();
  xSEnergy = xSEnergyN = xE5x5Matrix = xE3x3Matrix = 0;
  xE5x5MatrixN = xE3x3MatrixN = 0;
}

void HcalTB02Analysis::finish() {

  /*
  //Profile 
  std::ofstream   oFile;
  oFile.open("profile.dat");
  float st[19] = {0.8,
                  0.4,  0.4,  0.4,  0.4,  0.4,   
                  0.4,  0.4,  0.4,  0.4,  0.4,
                  0.4,  0.4,  0.4,  0.4,  0.4, 
                  0.8,  1.0,  1.0};
                 
  //cm of material (brass) in front of scintillator layer i:
 
  float w[19] = {7.45,                         //iron !
                 6.00, 6.00, 6.00, 6.00, 6.00, //brass
                 6.00, 6.00, 6.00, 6.00, 6.60, //brass
                 6.60, 6.60, 6.60, 6.60, 6.60, //brass
                 8.90, 20.65, 19.5};            //brass,iron !

  for (int ilayer = 0; ilayer<19; ilayer++) {

    // Histogram mean and sigma calculated from the ROOT histos
    edm::LogInfo("HcalTBSim") << "Layer number: " << ilayer << " Mean = " 
                              << histo->getMean(ilayer) << " sigma = "   
                              << histo->getRMS(ilayer) << " LThick= "   
                              << w[ilayer] << " SThick= "   << st[ilayer];
      
    oFile << ilayer << " "  << histo->getMean(ilayer) << " " 
          << histo->getRMS(ilayer)  << " " << w[ilayer] << " " << st[ilayer] 
          << std::endl;

  } 
  oFile.close(); 
  */
}