#include <DTVDriftSegment.h>

Inheritance diagram for DTVDriftSegment:

Public Member Functions
virtual DTVDriftData	compute (const DTSuperLayerId &)
	DTVDriftSegment (edm::ParameterSet const &)
virtual void	setES (const edm::EventSetup &setup)
virtual	~DTVDriftSegment ()
Private Member Functions
TH1F *	getHisto (const DTSuperLayerId &)
std::string	getHistoName (const DTSuperLayerId &)
Private Attributes
DTResidualFitter *	fitter_
const DTMtime *	mTimeMap_
unsigned int	nSigmas_
TFile *	rootFile_

Detailed Description

Concrete implementation of a DTVDriftBaseAlgo. Computes vDrift using fit result segment by segment.

Revision:: 1.3

Author:: A. Vilela Pereira

Definition at line 22 of file DTVDriftSegment.h.

Constructor & Destructor Documentation

DTVDriftSegment::DTVDriftSegment ( edm::ParameterSet const & pset )

Definition at line 34 of file DTVDriftSegment.cc.

References debug, fitter_, edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), rootFile_, and dtTPAnalyzer_cfg::rootFileName.

                                                        :
  nSigmas_( pset.getUntrackedParameter<unsigned int>("nSigmasFitRange", 1) ) {

  string rootFileName = pset.getParameter<string>("rootFileName");
  rootFile_ = new TFile(rootFileName.c_str(), "READ");

  bool debug = pset.getUntrackedParameter<bool>("debug",false);
  fitter_ = new DTResidualFitter(debug);
  //bool debug = pset.getUntrackedParameter<bool>("debug", false);
  //if(debug) fitter_->setVerbosity(1);
}

DTVDriftSegment::~DTVDriftSegment ( ) [virtual]

Definition at line 46 of file DTVDriftSegment.cc.

References fitter_, and rootFile_.

                                  {
  rootFile_->Close();
  delete fitter_;
}

Member Function Documentation

DTVDriftData DTVDriftSegment::compute ( const DTSuperLayerId & slId ) [virtual]

Implements DTVDriftBaseAlgo.

Definition at line 58 of file DTVDriftSegment.cc.

References DTVelocityUnits::cm_per_ns, Exception, DTResidualFitResult::fitMean, DTResidualFitResult::fitMeanError, DTResidualFitter::fitResiduals(), DTResidualFitResult::fitSigma, DTResidualFitResult::fitSigmaError, fitter_, DTMtime::get(), getHisto(), LogTrace, mTimeMap_, nSigmas_, dtDQMClient_cfg::resolution, ntuplemaker::status, and DTSuperLayerId::superLayer().

                                                                {

  // Get original value from DB; vdrift is cm/ns , resolution is cm
  float vDrift = 0., resolution = 0.;
  int status = mTimeMap_->get(slId,vDrift,resolution,DTVelocityUnits::cm_per_ns);

  if(status != 0) throw cms::Exception("DTCalibration") << "Could not find vDrift entry in DB for"
                                                        << slId << endl;

  // For RZ superlayers use original value
  if(slId.superLayer() == 2){
     LogTrace("Calibration") << "[DTVDriftSegment]: RZ superlayer\n"
                             << "                   Will use original vDrift and resolution.";
     return DTVDriftData(vDrift,resolution);
  } else{
     TH1F* vDriftCorrHisto = getHisto(slId);
     // If empty histogram 
     if(vDriftCorrHisto->GetEntries() == 0){
        LogError("Calibration") << "[DTVDriftSegment]: Histogram " << vDriftCorrHisto->GetName() << " is empty.\n"
                                << "                   Will use original vDrift and resolution.";
        return DTVDriftData(vDrift,resolution);                              
     }
   
     LogTrace("Calibration") << "[DTVDriftSegment]: Fitting histogram " << vDriftCorrHisto->GetName(); 
     DTResidualFitResult fitResult = fitter_->fitResiduals(*vDriftCorrHisto,nSigmas_);
     LogTrace("Calibration") << "[DTVDriftSegment]: \n"
                             << "   Fit Mean  = " << fitResult.fitMean << " +/- "
                                                  << fitResult.fitMeanError << "\n"
                             << "   Fit Sigma = " << fitResult.fitSigma << " +/- "
                                                  << fitResult.fitSigmaError;

     float vDriftCorr = fitResult.fitMean;
     float vDriftNew = vDrift*(1. - vDriftCorr); 
     float resolutionNew = resolution;
     return DTVDriftData(vDriftNew,resolutionNew);
  }
}

TH1F * DTVDriftSegment::getHisto ( const DTSuperLayerId & slId ) [private]

Definition at line 96 of file DTVDriftSegment.cc.

References Exception, getHistoName(), timingPdfMaker::histo, and rootFile_.

Referenced by compute().

                                                          {
  string histoName = getHistoName(slId);
  TH1F* histo = static_cast<TH1F*>(rootFile_->Get(histoName.c_str()));
  if(!histo) throw cms::Exception("DTCalibration") << "v-drift correction histogram not found:"
                                                   << histoName << endl; 
  return histo;
}

string DTVDriftSegment::getHistoName ( const DTSuperLayerId & slId ) [private]

Definition at line 104 of file DTVDriftSegment.cc.

References DTSuperLayerId::chamberId(), DTChamberId::sector(), relativeConstraints::station, DTChamberId::station(), DTSuperLayerId::superLayer(), and DTChamberId::wheel().

Referenced by getHisto().

                                                               {
  DTChamberId chId = slId.chamberId();

  // Compose the chamber name
  stringstream wheel; wheel << chId.wheel();
  stringstream station; station << chId.station();
  stringstream sector; sector << chId.sector();

  string chHistoName =
    "_W" + wheel.str() +
    "_St" + station.str() +
    "_Sec" + sector.str();

  return (slId.superLayer() != 2)?("hRPhiVDriftCorr" + chHistoName):("hRZVDriftCorr" + chHistoName);
}

void DTVDriftSegment::setES ( const edm::EventSetup & setup ) [virtual]

Implements DTVDriftBaseAlgo.

Definition at line 51 of file DTVDriftSegment.cc.

References edm::EventSetup::get(), and mTimeMap_.

                                                      {
  // Get the map of vdrift from the setup
  ESHandle<DTMtime> mTime;
  setup.get<DTMtimeRcd>().get(mTime);
  mTimeMap_ = &*mTime;
}