Alignment/LaserAlignment/test/RecoAnalyzerRecHits.cc - master - githubmirror/cmssw

Alignment/LaserAlignment/test/RecoAnalyzerRecHits.cc
597 строк31 KB
Ianna Osborne
* Use Tracker parameters in Tracker geometry builder
07 апр 2015, 11:07
07 апр 2015, 11:07a4ed470
/** \file RecoAnalyzerRecHits.cc
*  plots for RecHits
  *
  *  $Date: 2012/12/26 20:35:50 $
  *  $Revision: 1.11 $
  *  \author Maarten Thomas
 */

#include "Alignment/LaserAlignment/test/RecoAnalyzer.h"
#include "FWCore/Framework/interface/Event.h" 
#include "FWCore/Framework/interface/ESHandle.h" 
#include "FWCore/Framework/interface/EventSetup.h" 
#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeometry.h" 
#include "Geometry/Records/interface/TrackerDigiGeometryRecord.h" 
#include "Geometry/TrackerGeometryBuilder/interface/StripGeomDetUnit.h" 
#include "DataFormats/DetId/interface/DetId.h" 
#include "DataFormats/SiStripDetId/interface/StripSubdetector.h" 
#include "DataFormats/TrackerCommon/interface/TrackerTopology.h"
#include "Geometry/Records/interface/TrackerTopologyRcd.h"
#include "DataFormats/TrackerRecHit2D/interface/SiStripRecHit2DCollection.h" 

  void RecoAnalyzer::trackerRecHits(edm::Event const& theEvent, edm::EventSetup const& theSetup)
{
  //Retrieve tracker topology from geometry
  edm::ESHandle<TrackerTopology> tTopoHandle;
  theSetup.get<TrackerTopologyRcd>().get(tTopoHandle);
  const TrackerTopology* const tTopo = tTopoHandle.product();


  // access the Tracker
  edm::ESHandle<TrackerGeometry> theTrackerGeometry;
  theSetup.get<TrackerDigiGeometryRecord>().get(theTrackerGeometry);
  const TrackerGeometry& theTracker(*theTrackerGeometry);

  edm::Handle<SiStripMatchedRecHit2DCollection> rechitsMatchedHandle;
  edm::Handle<SiStripRecHit2DCollection> rechitsRPhiHandle;
  edm::Handle<SiStripRecHit2DCollection> rechitsStereoHandle;

  // get the RecHits from the event
  theEvent.getByLabel(theRecHitProducer,"matchedRecHit", rechitsMatchedHandle);
  theEvent.getByLabel(theRecHitProducer,"rphiRecHit", rechitsRPhiHandle);
  theEvent.getByLabel(theRecHitProducer,"stereoRecHit", rechitsStereoHandle);

  // the RecHit collections
  const SiStripMatchedRecHit2DCollection * theMatchedRecHitCollection = rechitsMatchedHandle.product();
  const SiStripRecHit2DCollection * theRPhiRecHitCollection = rechitsRPhiHandle.product();
  const SiStripRecHit2DCollection * theStereoRecHitCollection = rechitsStereoHandle.product();

  // loop over the detIds for each RecHit Collection
  for ( SiStripMatchedRecHit2DCollection::const_iterator det_iter = theMatchedRecHitCollection->begin(), det_end = theMatchedRecHitCollection->end();
        det_iter != det_end; ++det_iter) {
    SiStripMatchedRecHit2DCollection::DetSet rechitRange = *det_iter;
    DetId detid(rechitRange.detId());
      // get the DetUnit
    const StripGeomDetUnit* const theStripDet = dynamic_cast<const StripGeomDetUnit*>(theTracker.idToDet(detid));

      // some variables we need later on in the program
    int theBeam     = 0;
    int theRing     = 0;
    std::string thePart  = "";
    int theTIBLayer = 0;
    int theTOBLayer = 0;
    int theTECWheel = 0;
    int theTOBStereoDet = 0;

    switch (detid.subdetId())
    {
      case StripSubdetector::TIB:
      {
        
        thePart = "TIB";
        theTIBLayer = tTopo->tibLayer(detid.rawId);
        break;
      }
      case StripSubdetector::TOB:
      {
        
        thePart = "TOB";
        theTOBLayer = tTopo->tobLayer(detid.rawId);
        theTOBStereoDet = tTopo->tobStereo(detid.rawId);
        break;
      }
      case StripSubdetector::TEC:
      {
        

      // is this module in TEC+ or TEC-?
        if (tTopo->tecSide(detid.rawId) == 1) { thePart = "TEC-"; }
        else if (tTopo->tecSide(detid.rawId) == 2) { thePart = "TEC+"; }

      // in which ring is this module?
        if ( theStripDet->surface().position().perp() > 55.0 && theStripDet->surface().position().perp() < 59.0 )
          { theRing = 4; } // Ring 4
        else if ( theStripDet->surface().position().perp() > 81.0 && theStripDet->surface().position().perp() < 85.0 )
          { theRing = 6; } // Ring 6
        else
          { theRing = -1; } // probably not a Laser Hit!

      // on which disk is this module
        theTECWheel = tTopo->tecWheel(detid.rawId);
        break;
      }
    }

      // which beam belongs these digis to
    if ( thePart == "TIB" && theTIBLayer == 4 )
    {
      if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTIB))          { theBeam = 0; } // beam 0 

      else if ( (theStripDet->surface().position().phi() > 1.29 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < 1.29 + theSearchPhiTIB))     { theBeam = 1; } // beam 1

      else if ( (theStripDet->surface().position().phi() > 1.85 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < 1.85 + theSearchPhiTIB))     { theBeam = 2; } // beam 2

      else if ( (theStripDet->surface().position().phi() > 2.75 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < 2.75 + theSearchPhiTIB))     { theBeam = 3; } // beam 3

      else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTIB))    { theBeam = 4; } // beam 4

      else if ( (theStripDet->surface().position().phi() > -2.00 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < -2.00 + theSearchPhiTIB))    { theBeam = 5; } // beam 5

      else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTIB))    { theBeam = 6; } // beam 6

      else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTIB) 
        && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTIB))    { theBeam = 7; } // beam 7
      else
        { theBeam = -1; } // probably not a Laser Hit!
    }
    else if ( thePart == "TOB" && theTOBLayer == 1 )
    {
      if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTOB) 
        && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTOB))          { theBeam = 0; } // beam 0 

      else if ( (theStripDet->surface().position().phi() > 1.29 - theSearchPhiTOB) 
        && (theStripDet->surface().position().phi() < 1.29 + theSearchPhiTOB))     { theBeam = 1; } // beam 1

      else if ( (theStripDet->surface().position().phi() > 1.85 - theSearchPhiTOB)
        && (theStripDet->surface().position().phi() < 1.85 + theSearchPhiTOB))     { theBeam = 2; } // beam 2

      else if ( (theStripDet->surface().position().phi() > 2.75 - theSearchPhiTOB)
        && (theStripDet->surface().position().phi() < 2.75 + theSearchPhiTOB))     { theBeam = 3; } // beam 3

      else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTOB)
        && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTOB))    { theBeam = 4; } // beam 4

      else if ( (theStripDet->surface().position().phi() > -2.00 - theSearchPhiTOB)
        && (theStripDet->surface().position().phi() < -2.00 + theSearchPhiTOB))    { theBeam = 5; } // beam 5

      else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTOB)
        && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTOB))    { theBeam = 6; } // beam 6

      else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTOB)
        && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTOB))    { theBeam = 7; } // beam 7
      else
        { theBeam = -1; } // probably not a Laser Hit!
    }
    else if ( thePart == "TEC+" || thePart == "TEC-" )
    {
      if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTEC))          { theBeam = 0; } // beam 0 

      else if ( (theStripDet->surface().position().phi() > 1.18 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < 1.18 + theSearchPhiTEC))     { theBeam = 1; } // beam 1

      else if ( (theStripDet->surface().position().phi() > 1.96 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < 1.96 + theSearchPhiTEC))     { theBeam = 2; } // beam 2

      else if ( (theStripDet->surface().position().phi() > 2.74 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < 2.74 + theSearchPhiTEC))     { theBeam = 3; } // beam 3

      else if ( (theStripDet->surface().position().phi() > -2.74 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -2.74 + theSearchPhiTEC))    { theBeam = 4; } // beam 4

      else if ( (theStripDet->surface().position().phi() > -1.96 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -1.96 + theSearchPhiTEC))    { theBeam = 5; } // beam 5

      else if ( (theStripDet->surface().position().phi() > -1.18 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -1.18 + theSearchPhiTEC))    { theBeam = 6; } // beam 6

      else if ( (theStripDet->surface().position().phi() > -0.39 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -0.39 + theSearchPhiTEC))    { theBeam = 7; } // beam 7

      else if ( (theStripDet->surface().position().phi() > 1.28 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < 1.28 + theSearchPhiTEC))     { theBeam = 21; } // beam 1 TEC2TEC

      else if ( (theStripDet->surface().position().phi() > 1.84 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < 1.84 + theSearchPhiTEC))     { theBeam = 22; } // beam 2 TEC2TEC

      else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTEC))    { theBeam = 24; } // beam 4 TEC2TEC

      else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTEC))    { theBeam = 26; } // beam 6 TEC2TEC

      else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTEC)
        && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTEC))    { theBeam = 27; } // beam 7 TEC2TEC
      else 
        { theBeam = -1; } // probably not a Laser Hit!
    }


      // get the RecHits
    SiStripMatchedRecHit2DCollection::DetSet::const_iterator rechitRangeIteratorBegin = rechitRange.begin();
    SiStripMatchedRecHit2DCollection::DetSet::const_iterator rechitRangeIteratorEnd = rechitRange.end();
    SiStripMatchedRecHit2DCollection::DetSet::const_iterator iRecHit = rechitRangeIteratorBegin;
      // loop on the RecHits
    for (; iRecHit != rechitRangeIteratorEnd; iRecHit++)
    {
      SiStripMatchedRecHit2D const rechit = *iRecHit;
      theRecHitPositionsX->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).x());
      theRecHitPositionsY->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).y());
      theRecHitPositionsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z());
      theRecHitPositionsYvsX->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).x(),
        theStripDet->surface().toGlobal(rechit.localPosition()).y());
      theRecHitPositionsPhivsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z(),
        theStripDet->surface().toGlobal(rechit.localPosition()).phi());
      theRecHitPositionsRvsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z(),
        theStripDet->surface().toGlobal(rechit.localPosition()).perp());

      if (thePart == "TEC+" || thePart == "TEC-")   
      {             
        double r_ = sqrt(pow(theStripDet->surface().toGlobal(rechit.localPosition()).x(),2) + pow(theStripDet->surface().toGlobal(rechit.localPosition()).y(),2));
        fillLaserBeamPlots(r_,theTECWheel,thePart,theRing,theBeam);
      }
    }
  }

  for ( SiStripRecHit2DCollection::const_iterator det_iter = theRPhiRecHitCollection->begin(), det_end = theRPhiRecHitCollection->end();
        det_iter != det_end; ++det_iter) {
    SiStripRecHit2DCollection::DetSet rechitRange = *det_iter;
    DetId detid(rechitRange.detId());
      // get the DetUnit
    const StripGeomDetUnit* const theStripDet = dynamic_cast<const StripGeomDetUnit*>(theTracker.idToDet(detid));

        // some variables we need later on in the program
      int theBeam     = 0;
      int theRing     = 0;
      std::string thePart  = "";
      int theTIBLayer = 0;
      int theTOBLayer = 0;
      int theTECWheel = 0;
      int theTOBStereoDet = 0;

      switch (detid.subdetId())
      {
        case StripSubdetector::TIB:
        {
          
          thePart = "TIB";
          theTIBLayer = tTopo->tibLayer(detid.rawId);
          break;
        }
        case StripSubdetector::TOB:
        {
          
          thePart = "TOB";
          theTOBLayer = tTopo->tobLayer(detid.rawId);
          theTOBStereoDet = tTopo->tobStereo(detid.rawId);
          break;
        }
        case StripSubdetector::TEC:
        {
          

        // is this module in TEC+ or TEC-?
          if (tTopo->tecSide(detid.rawId) == 1) { thePart = "TEC-"; }
          else if (tTopo->tecSide(detid.rawId) == 2) { thePart = "TEC+"; }

        // in which ring is this module?
          if ( theStripDet->surface().position().perp() > 55.0 && theStripDet->surface().position().perp() < 59.0 )
            { theRing = 4; } // Ring 4
          else if ( theStripDet->surface().position().perp() > 81.0 && theStripDet->surface().position().perp() < 85.0 )
            { theRing = 6; } // Ring 6
          else
            { theRing = -1; } // probably not a Laser Hit!

        // on which disk is this module
          theTECWheel = tTopo->tecWheel(detid.rawId);
          break;
        }
      }

        // which beam belongs these digis to
      if ( thePart == "TIB" && theTIBLayer == 4 )
      {
        if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTIB))          { theBeam = 0; } // beam 0 

        else if ( (theStripDet->surface().position().phi() > 1.29 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 1.29 + theSearchPhiTIB))     { theBeam = 1; } // beam 1

        else if ( (theStripDet->surface().position().phi() > 1.85 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 1.85 + theSearchPhiTIB))     { theBeam = 2; } // beam 2

        else if ( (theStripDet->surface().position().phi() > 2.75 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 2.75 + theSearchPhiTIB))     { theBeam = 3; } // beam 3

        else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTIB))    { theBeam = 4; } // beam 4

        else if ( (theStripDet->surface().position().phi() > -2.00 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -2.00 + theSearchPhiTIB))    { theBeam = 5; } // beam 5

        else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTIB))    { theBeam = 6; } // beam 6

        else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTIB))    { theBeam = 7; } // beam 7
        else
          { theBeam = -1; } // probably not a Laser Hit!
      }
      else if ( thePart == "TOB" && theTOBLayer == 1 )
      {
        if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTOB) 
          && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTOB))          { theBeam = 0; } // beam 0 

        else if ( (theStripDet->surface().position().phi() > 1.29 - theSearchPhiTOB) 
          && (theStripDet->surface().position().phi() < 1.29 + theSearchPhiTOB))     { theBeam = 1; } // beam 1

        else if ( (theStripDet->surface().position().phi() > 1.85 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < 1.85 + theSearchPhiTOB))     { theBeam = 2; } // beam 2

        else if ( (theStripDet->surface().position().phi() > 2.75 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < 2.75 + theSearchPhiTOB))     { theBeam = 3; } // beam 3

        else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTOB))    { theBeam = 4; } // beam 4

        else if ( (theStripDet->surface().position().phi() > -2.00 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -2.00 + theSearchPhiTOB))    { theBeam = 5; } // beam 5

        else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTOB))    { theBeam = 6; } // beam 6

        else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTOB))    { theBeam = 7; } // beam 7
        else
          { theBeam = -1; } // probably not a Laser Hit!
      }
      else if ( thePart == "TEC+" || thePart == "TEC-" )
      {
        if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTEC))          { theBeam = 0; } // beam 0 

        else if ( (theStripDet->surface().position().phi() > 1.18 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.18 + theSearchPhiTEC))     { theBeam = 1; } // beam 1

        else if ( (theStripDet->surface().position().phi() > 1.96 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.96 + theSearchPhiTEC))     { theBeam = 2; } // beam 2

        else if ( (theStripDet->surface().position().phi() > 2.74 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 2.74 + theSearchPhiTEC))     { theBeam = 3; } // beam 3

        else if ( (theStripDet->surface().position().phi() > -2.74 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -2.74 + theSearchPhiTEC))    { theBeam = 4; } // beam 4

        else if ( (theStripDet->surface().position().phi() > -1.96 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -1.96 + theSearchPhiTEC))    { theBeam = 5; } // beam 5

        else if ( (theStripDet->surface().position().phi() > -1.18 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -1.18 + theSearchPhiTEC))    { theBeam = 6; } // beam 6

        else if ( (theStripDet->surface().position().phi() > -0.39 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -0.39 + theSearchPhiTEC))    { theBeam = 7; } // beam 7

        else if ( (theStripDet->surface().position().phi() > 1.28 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.28 + theSearchPhiTEC))     { theBeam = 21; } // beam 1 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > 1.84 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.84 + theSearchPhiTEC))     { theBeam = 22; } // beam 2 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTEC))    { theBeam = 24; } // beam 4 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTEC))    { theBeam = 26; } // beam 6 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTEC))    { theBeam = 27; } // beam 7 TEC2TEC
        else 
          { theBeam = -1; } // probably not a Laser Hit!
      }

      // get the RecHits
    SiStripRecHit2DCollection::DetSet::const_iterator rechitRangeIteratorBegin = rechitRange.begin();
    SiStripRecHit2DCollection::DetSet::const_iterator rechitRangeIteratorEnd = rechitRange.end();
    SiStripRecHit2DCollection::DetSet::const_iterator iRecHit = rechitRangeIteratorBegin;
      // loop on the RecHits
    for (; iRecHit != rechitRangeIteratorEnd; iRecHit++)
    {
      SiStripRecHit2D const rechit = *iRecHit;
      theRecHitPositionsX->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).x());
      theRecHitPositionsY->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).y());
      theRecHitPositionsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z());
      theRecHitPositionsYvsX->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).x(),
        theStripDet->surface().toGlobal(rechit.localPosition()).y());
      theRecHitPositionsPhivsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z(),
        theStripDet->surface().toGlobal(rechit.localPosition()).phi());
      theRecHitPositionsRvsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z(),
        theStripDet->surface().toGlobal(rechit.localPosition()).perp());

      if (thePart == "TEC+" || thePart == "TEC-")   
      {             
        double r_ = sqrt(pow(theStripDet->surface().toGlobal(rechit.localPosition()).x(),2) + pow(theStripDet->surface().toGlobal(rechit.localPosition()).y(),2));
        fillLaserBeamPlots(r_,theTECWheel,thePart,theRing,theBeam);
      }

    }
  }

  for ( SiStripRecHit2DCollection::const_iterator det_iter = theStereoRecHitCollection->begin(), det_end = theStereoRecHitCollection->end();
        det_iter != det_end; ++det_iter) {
    SiStripRecHit2DCollection::DetSet rechitRange = *det_iter;
    DetId detid(rechitRange.detId());
      // get the DetUnit
    const StripGeomDetUnit* const theStripDet = dynamic_cast<const StripGeomDetUnit*>(theTracker.idToDet(detid));

        // some variables we need later on in the program
      int theBeam     = 0;
      int theRing     = 0;
      std::string thePart  = "";
      int theTIBLayer = 0;
      int theTOBLayer = 0;
      int theTECWheel = 0;
      int theTOBStereoDet = 0;

      switch (detid.subdetId())
      {
        case StripSubdetector::TIB:
        {
          
          thePart = "TIB";
          theTIBLayer = tTopo->tibLayer(detid.rawId);
          break;
        }
        case StripSubdetector::TOB:
        {
          
          thePart = "TOB";
          theTOBLayer = tTopo->tobLayer(detid.rawId);
          theTOBStereoDet = tTopo->tobStereo(detid.rawId);
          break;
        }
        case StripSubdetector::TEC:
        {
          

        // is this module in TEC+ or TEC-?
          if (tTopo->tecSide(detid.rawId) == 1) { thePart = "TEC-"; }
          else if (tTopo->tecSide(detid.rawId) == 2) { thePart = "TEC+"; }

        // in which ring is this module?
          if ( theStripDet->surface().position().perp() > 55.0 && theStripDet->surface().position().perp() < 59.0 )
            { theRing = 4; } // Ring 4
          else if ( theStripDet->surface().position().perp() > 81.0 && theStripDet->surface().position().perp() < 85.0 )
            { theRing = 6; } // Ring 6
          else
            { theRing = -1; } // probably not a Laser Hit!

        // on which disk is this module
          theTECWheel = tTopo->tecWheel(detid.rawId);
          break;
        }
      }

        // which beam belongs these digis to
      if ( thePart == "TIB" && theTIBLayer == 4 )
      {
        if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTIB))          { theBeam = 0; } // beam 0 

        else if ( (theStripDet->surface().position().phi() > 1.29 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 1.29 + theSearchPhiTIB))     { theBeam = 1; } // beam 1

        else if ( (theStripDet->surface().position().phi() > 1.85 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 1.85 + theSearchPhiTIB))     { theBeam = 2; } // beam 2

        else if ( (theStripDet->surface().position().phi() > 2.75 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < 2.75 + theSearchPhiTIB))     { theBeam = 3; } // beam 3

        else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTIB))    { theBeam = 4; } // beam 4

        else if ( (theStripDet->surface().position().phi() > -2.00 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -2.00 + theSearchPhiTIB))    { theBeam = 5; } // beam 5

        else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTIB))    { theBeam = 6; } // beam 6

        else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTIB) 
          && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTIB))    { theBeam = 7; } // beam 7
        else
          { theBeam = -1; } // probably not a Laser Hit!
      }
      else if ( thePart == "TOB" && theTOBLayer == 1 )
      {
        if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTOB) 
          && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTOB))          { theBeam = 0; } // beam 0 

        else if ( (theStripDet->surface().position().phi() > 1.29 - theSearchPhiTOB) 
          && (theStripDet->surface().position().phi() < 1.29 + theSearchPhiTOB))     { theBeam = 1; } // beam 1

        else if ( (theStripDet->surface().position().phi() > 1.85 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < 1.85 + theSearchPhiTOB))     { theBeam = 2; } // beam 2

        else if ( (theStripDet->surface().position().phi() > 2.75 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < 2.75 + theSearchPhiTOB))     { theBeam = 3; } // beam 3

        else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTOB))    { theBeam = 4; } // beam 4

        else if ( (theStripDet->surface().position().phi() > -2.00 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -2.00 + theSearchPhiTOB))    { theBeam = 5; } // beam 5

        else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTOB))    { theBeam = 6; } // beam 6

        else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTOB)
          && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTOB))    { theBeam = 7; } // beam 7
        else
          { theBeam = -1; } // probably not a Laser Hit!
      }
      else if ( thePart == "TEC+" || thePart == "TEC-" )
      {
        if ( (theStripDet->surface().position().phi() > 0.39 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 0.39 + theSearchPhiTEC))          { theBeam = 0; } // beam 0 

        else if ( (theStripDet->surface().position().phi() > 1.18 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.18 + theSearchPhiTEC))     { theBeam = 1; } // beam 1

        else if ( (theStripDet->surface().position().phi() > 1.96 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.96 + theSearchPhiTEC))     { theBeam = 2; } // beam 2

        else if ( (theStripDet->surface().position().phi() > 2.74 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 2.74 + theSearchPhiTEC))     { theBeam = 3; } // beam 3

        else if ( (theStripDet->surface().position().phi() > -2.74 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -2.74 + theSearchPhiTEC))    { theBeam = 4; } // beam 4

        else if ( (theStripDet->surface().position().phi() > -1.96 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -1.96 + theSearchPhiTEC))    { theBeam = 5; } // beam 5

        else if ( (theStripDet->surface().position().phi() > -1.18 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -1.18 + theSearchPhiTEC))    { theBeam = 6; } // beam 6

        else if ( (theStripDet->surface().position().phi() > -0.39 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -0.39 + theSearchPhiTEC))    { theBeam = 7; } // beam 7

        else if ( (theStripDet->surface().position().phi() > 1.28 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.28 + theSearchPhiTEC))     { theBeam = 21; } // beam 1 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > 1.84 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < 1.84 + theSearchPhiTEC))     { theBeam = 22; } // beam 2 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > -2.59 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -2.59 + theSearchPhiTEC))    { theBeam = 24; } // beam 4 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > -1.10 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -1.10 + theSearchPhiTEC))    { theBeam = 26; } // beam 6 TEC2TEC

        else if ( (theStripDet->surface().position().phi() > -0.50 - theSearchPhiTEC)
          && (theStripDet->surface().position().phi() < -0.50 + theSearchPhiTEC))    { theBeam = 27; } // beam 7 TEC2TEC
        else 
          { theBeam = -1; } // probably not a Laser Hit!
      }

      // get the RecHits
    SiStripRecHit2DCollection::DetSet::const_iterator rechitRangeIteratorBegin = rechitRange.begin();
    SiStripRecHit2DCollection::DetSet::const_iterator rechitRangeIteratorEnd = rechitRange.end();
    SiStripRecHit2DCollection::DetSet::const_iterator iRecHit = rechitRangeIteratorBegin;
      // loop on the RecHits
    for (; iRecHit != rechitRangeIteratorEnd; iRecHit++)
    {
      SiStripRecHit2D const rechit = *iRecHit;
      theRecHitPositionsX->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).x());
      theRecHitPositionsY->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).y());
      theRecHitPositionsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z());
      theRecHitPositionsYvsX->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).x(),
        theStripDet->surface().toGlobal(rechit.localPosition()).y());
      theRecHitPositionsPhivsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z(),
        theStripDet->surface().toGlobal(rechit.localPosition()).phi());
      theRecHitPositionsRvsZ->Fill(theStripDet->surface().toGlobal(rechit.localPosition()).z(),
        theStripDet->surface().toGlobal(rechit.localPosition()).phi());

      if (thePart == "TEC+" || thePart == "TEC-")   
      {             
        double r_ = sqrt(pow(theStripDet->surface().toGlobal(rechit.localPosition()).x(),2) + pow(theStripDet->surface().toGlobal(rechit.localPosition()).y(),2));
        fillLaserBeamPlots(r_,theTECWheel,thePart,theRing,theBeam);
      }
    }
  }
}