#include <HcalHF_S9S1algorithm.h>

Public Member Functions
double	bit ()

double	CalcEnergyThreshold (double abs_energy, const std::vector< double > &params)

double	CalcSlope (int abs_ieta, const std::vector< double > &params)

	HcalHF_S9S1algorithm ()

	HcalHF_S9S1algorithm (const std::vector< double > &short_optimumSlope, const std::vector< double > &short_Energy, const std::vector< double > &short_ET, const std::vector< double > &long_optimumSlope, const std::vector< double > &long_Energy, const std::vector< double > &long_ET, int HcalAcceptSeverityLevel, bool isS8S1)

void	HFSetFlagFromS9S1 (HFRecHit &hf, HFRecHitCollection &rec, const HcalChannelQuality myqual, const HcalSeverityLevelComputer mySeverity)

	~HcalHF_S9S1algorithm ()

Private Attributes
int	HcalAcceptSeverityLevel_

bool	isS8S1_

std::vector< double >	long_Energy_

std::vector< double >	long_ET_

std::vector< double >	LongEnergyThreshold

std::vector< double >	LongETThreshold

std::vector< double >	LongSlopes

std::vector< double >	short_Energy_

std::vector< double >	short_ET_

std::vector< double >	ShortEnergyThreshold

std::vector< double >	ShortETThreshold

std::vector< double >	ShortSlopes

Detailed Description

Class evaluates the ratio |(L-S)/(L+S)| for a given cell, and flags the cell if the threshold exceeds a given maximum value R(Energy). Each cell must also pass ieta-dependent energy and ET cuts to be considered for flagging.

Author: J. Temple and D. Ferencek

Definition at line 22 of file HcalHF_S9S1algorithm.h.

Constructor & Destructor Documentation

HcalHF_S9S1algorithm::HcalHF_S9S1algorithm ( )

Constructors

Definition at line 13 of file HcalHF_S9S1algorithm.cc.

References HcalAcceptSeverityLevel_, mps_fire::i, isS8S1_, LongEnergyThreshold, LongETThreshold, LongSlopes, ShortEnergyThreshold, ShortETThreshold, and ShortSlopes.

 { 
   // Default settings:  Energy > 50 GeV, slope = 0, ET = 0
   std::vector<double> blank;
   blank.clear();
   blank.push_back(0);
   std::vector<double> EnergyDefault;
   EnergyDefault.clear();
   EnergyDefault.push_back(50);
 
   // Thresholds only need to be computed once, not every event!
   LongSlopes.clear();
   ShortSlopes.clear();
   for (int i=29;i<=41;++i)
     {
       LongSlopes.push_back(0);
       ShortSlopes.push_back(0);
     }
   LongEnergyThreshold.clear();
   LongETThreshold.clear();
   ShortEnergyThreshold.clear();
   ShortETThreshold.clear();
   for (int i=29;i<=41;++i)
     {
       LongEnergyThreshold.push_back(EnergyDefault[0]);
       LongETThreshold.push_back(blank[0]);
       ShortEnergyThreshold.push_back(EnergyDefault[0]);
       ShortETThreshold.push_back(blank[0]);
     }
   HcalAcceptSeverityLevel_=0;
   isS8S1_=false; // S8S1 is almost the same as S9S1
 }

HcalHF_S9S1algorithm::HcalHF_S9S1algorithm	(	const std::vector< double > &	short_optimumSlope,
		const std::vector< double > &	short_Energy,
		const std::vector< double > &	short_ET,
		const std::vector< double > &	long_optimumSlope,
		const std::vector< double > &	long_Energy,
		const std::vector< double > &	long_ET,
		int	HcalAcceptSeverityLevel,
		bool	isS8S1
	)

Definition at line 47 of file HcalHF_S9S1algorithm.cc.

References CaloTowerSchemeBnoEE_cfi::HcalAcceptSeverityLevel, HcalAcceptSeverityLevel_, HcalHitReconstructor_hf_cfi::isS8S1, isS8S1_, HcalHitReconstructor_hf_cfi::long_optimumSlope, LongEnergyThreshold, LongETThreshold, LongSlopes, HcalHitReconstructor_hf_cfi::short_optimumSlope, ShortEnergyThreshold, ShortETThreshold, and ShortSlopes.

 {
   // Constructor in the case where all parameters are provided by the user
 
   // Thresholds only need to be computed once, not every event!
 
   LongSlopes=long_optimumSlope;
   ShortSlopes=short_optimumSlope;
   
   while (LongSlopes.size()<13)
     LongSlopes.push_back(0); // should be unnecessary, but include this protection to avoid crashes
   while (ShortSlopes.size()<13)
     ShortSlopes.push_back(0);
 
   // Get long, short energy thresholds (different threshold for each |ieta|)
   LongEnergyThreshold.clear();
   LongETThreshold.clear();
   ShortEnergyThreshold.clear();
   ShortETThreshold.clear();
   LongEnergyThreshold=long_Energy;
   LongETThreshold=long_ET;
   ShortEnergyThreshold=short_Energy;
   ShortETThreshold=short_ET;
 
   HcalAcceptSeverityLevel_=HcalAcceptSeverityLevel;
   isS8S1_=isS8S1;
 } // HcalHF_S9S1algorithm constructor with parameters

HcalHF_S9S1algorithm::~HcalHF_S9S1algorithm ( )

Definition at line 83 of file HcalHF_S9S1algorithm.cc.

83 {}

Member Function Documentation

double HcalHF_S9S1algorithm::bit ( )

inline

Definition at line 46 of file HcalHF_S9S1algorithm.h.

References HcalCaloFlagLabels::HFLongShort.

46 {return HcalCaloFlagLabels::HFLongShort;}

HcalCaloFlagLabels::HFLongShort

Definition: HcalCaloFlagLabels.h:36

double HcalHF_S9S1algorithm::CalcEnergyThreshold	(	double	abs_energy,
		const std::vector< double > &	params
	)

Definition at line 258 of file HcalHF_S9S1algorithm.cc.

References mps_fire::i, funct::pow(), and electronIdCutBased_cfi::threshold.

 {
   /* CalcEnergyThreshold calculates the polynomial [0]+[1]*x + [2]*x^2 + ....,
      where x is an integer provided by the first argument (int abs_ieta),
      and [0],[1],[2] is a vector of doubles provided by the second (std::vector<double> params).
      The output of the polynomial calculation (threshold) is returned by the function.
   */
   double threshold=0;
   for (std::vector<double>::size_type i=0;i<params.size();++i)
     {
       threshold+=params[i]*pow(abs_energy, (int)i);
     }
   return threshold;
 } //double HcalHF_S9S1algorithm::CalcEnergyThreshold(double abs_energy,std::vector<double> params)

double HcalHF_S9S1algorithm::CalcSlope	(	int	abs_ieta,
		const std::vector< double > &	params
	)

Definition at line 239 of file HcalHF_S9S1algorithm.cc.

References mps_fire::i, funct::pow(), and electronIdCutBased_cfi::threshold.

 {
   /* CalcSlope calculates the polynomial [0]+[1]*x + [2]*x^2 + ....,
      where x is an integer provided by the first argument (int abs_ieta),
      and [0],[1],[2] is a vector of doubles provided by the second (std::vector<double> params).
      The output of the polynomial calculation (threshold) is returned by the function.
      This function should no longer be needed, since we pass slopes for all ietas into the function via the parameter set.
   */
   double threshold=0;
   for (std::vector<double>::size_type i=0;i<params.size();++i)
     {
       threshold+=params[i]*pow(static_cast<double>(abs_ieta), (int)i);
     }
   return threshold;
 } // HcalHF_S9S1algorithm::CalcRThreshold(int abs_ieta, std::vector<double> params)

void HcalHF_S9S1algorithm::HFSetFlagFromS9S1	(	HFRecHit &	hf,
		HFRecHitCollection &	rec,
		const HcalChannelQuality *	myqual,
		const HcalSeverityLevelComputer *	mySeverity
	)

Definition at line 86 of file HcalHF_S9S1algorithm.cc.

References funct::abs(), edmIntegrityCheck::d, egammaForCoreTracking_cff::depth, HcalDetId::depth(), edm::SortedCollection< T, SORT >::end(), CaloRecHit::energy(), ET, HcalTopology::etaRange(), EnergyCorrector::etas, edm::SortedCollection< T, SORT >::find(), HcalSeverityLevelComputer::getSeverityLevel(), HcalChannelStatus::getValue(), HcalCondObjectContainer< Item >::getValues(), HcalAcceptSeverityLevel_, HcalForward, HcalCaloFlagLabels::HFLongShort, HcalCaloFlagLabels::HFS8S1Ratio, mps_fire::i, HFRecHit::id(), HcalDetId::ieta(), HcalDetId::iphi(), isS8S1_, cmsBatch::log, LongEnergyThreshold, LongETThreshold, LongSlopes, CaloRecHit::setFlagField(), ShortEnergyThreshold, ShortETThreshold, ShortSlopes, slope, and HcalCondObjectContainerBase::topo().

Referenced by HcalHitReconstructor::produce().

 {
   int ieta=hf.id().ieta(); // get coordinates of rechit being checked
   int depth=hf.id().depth();
   int iphi=hf.id().iphi();
   std::pair<double,double> etas = myqual->topo()->etaRange(HcalForward,abs(ieta));
   double eta1 = etas.first;
   double eta2 = etas.second;
   double fEta = 0.5*(eta1 + eta2); // calculate eta as average of eta values at ieta boundaries
   double energy=hf.energy();
   double ET = energy/fabs(cosh(fEta));
 
   // Step 1:  Check eta-dependent energy and ET thresholds -- same as PET algorithm
   double ETthresh=0, Energythresh=0; // set ET, energy thresholds
   if (depth==1)  // set thresholds for long fibers
     {
       Energythresh = LongEnergyThreshold[abs(ieta)-29];
       ETthresh     = LongETThreshold[abs(ieta)-29];
     }
   else if (depth==2) // short fibers
     {
       Energythresh = ShortEnergyThreshold[abs(ieta)-29];
       ETthresh     = ShortETThreshold[abs(ieta)-29];
     }
   if (energy<Energythresh || ET < ETthresh)
     return;
 
   // Step 1A:
   // Check that EL<ES when evaluating short fibers  (S8S1 check only)
   if (depth==2 && abs(ieta)>29 && isS8S1_)
     {
       double EL=0;
       // look for long partner
       HcalDetId neighbor(HcalForward, ieta,iphi,1);
       HFRecHitCollection::const_iterator neigh=rec.find(neighbor);
       if (neigh!=rec.end())
     EL=neigh->energy();
       
       if (EL>=energy)
     return;
     }
 
   // Step 2:  Find all neighbors, and calculate S9/S1
   double S9S1=0;
   int testphi=-99;
 
   // Part A:  Check fixed iphi, and vary ieta
   for (int d=1;d<=2;++d) // depth loop
     {
       for (int i=ieta-1;i<=ieta+1;++i) // ieta loop
     {
       testphi=iphi;
       // Special case when ieta=39, since ieta=40 only has phi values at 3,7,11,...
       // phi=3 covers 3,4,5,6
       if (abs(ieta)==39 && abs(i)>39 && testphi%4==1)
         testphi-=2;
       while (testphi<0) testphi+=72;
       if (i==ieta)
         if (d==depth || isS8S1_==true) continue;  // don't add the cell itself; don't count neighbor in same ieta-phi if S8S1 test enabled
 
       // Look to see if neighbor is in rechit collection
       HcalDetId neighbor(HcalForward, i,testphi,d);
       HFRecHitCollection::const_iterator neigh=rec.find(neighbor);
       // require that neighbor exists, and that it doesn't have a prior flag already set
       if (neigh!=rec.end())
         {
           const uint32_t chanstat = myqual->getValues(neighbor)->getValue();
           int SeverityLevel=mySeverity->getSeverityLevel(neighbor, neigh->flags(),
                                  chanstat);
           if (SeverityLevel<=HcalAcceptSeverityLevel_)
         S9S1+=neigh->energy();
         }
     }
     }
 
   // Part B: Fix ieta, and loop over iphi.  A bit more tricky, because of iphi wraparound and different segmentation at 40, 41
   
   int phiseg=2; // 10 degree segmentation for most of HF (1 iphi unit = 5 degrees)
   if (abs(ieta)>39) phiseg=4; // 20 degree segmentation for |ieta|>39
   for (int d=1;d<=2;++d)
     {
       for (int i=iphi-phiseg;i<=iphi+phiseg;i+=phiseg)
     {
       if (i==iphi) continue;  // don't add the cell itself, or its depthwise partner (which is already counted above)
       testphi=i;
       // Our own modular function, since default produces results -1%72 = -1
       while (testphi<0) testphi+=72;
       while (testphi>72) testphi-=72;
       // Look to see if neighbor is in rechit collection
       HcalDetId neighbor(HcalForward, ieta,testphi,d);
       HFRecHitCollection::const_iterator neigh=rec.find(neighbor);
       if (neigh!=rec.end())
         {
               const uint32_t chanstat = myqual->getValues(neighbor)->getValue();
               int SeverityLevel=mySeverity->getSeverityLevel(neighbor, neigh->flags(),
                                                              chanstat);
               if (SeverityLevel<=HcalAcceptSeverityLevel_)
                 S9S1+=neigh->energy();
             }
     }
     }
   
   if (abs(ieta)==40) // add extra cells for 39/40 boundary due to increased phi size at ieta=40.
     {
       for (int d=1;d<=2;++d) // add cells from both depths!
     {
       HcalDetId neighbor(HcalForward, 39*abs(ieta)/ieta,(iphi+2)%72,d);  
       HFRecHitCollection::const_iterator neigh=rec.find(neighbor);
       if (neigh!=rec.end())
             {
               const uint32_t chanstat = myqual->getValues(neighbor)->getValue();
               int SeverityLevel=mySeverity->getSeverityLevel(neighbor, neigh->flags(),
                                                              chanstat);
               if (SeverityLevel<=HcalAcceptSeverityLevel_)
                 S9S1+=neigh->energy();
             }
 
     }
     }
     
   // So far, S9S1 is the sum of the neighbors; divide to form ratio
   S9S1/=energy;
 
   // Now compare to threshold
   double slope=0;
   if (depth==1) slope = LongSlopes[abs(ieta)-29];
   else if (depth==2) slope=ShortSlopes[abs(ieta)-29];
   double intercept = 0;
   if (depth==1) intercept = LongEnergyThreshold[abs(ieta)-29];
   else if (depth==2)  intercept = ShortEnergyThreshold[abs(ieta)-29];
 
   // S9S1 cut has the form [0] + [1]*log[E];  S9S1 value should be above this line
   double S9S1cut = 0;
   // Protection in case intercept or energy are ever less than 0.  Do we have some other default value of S9S1cut we'd like touse in this case?
   if (intercept>0 && energy>0)  
     S9S1cut=-1.*slope*log(intercept) + slope*log(energy);
   if (S9S1<S9S1cut)
     {
       // Only set HFS8S1Ratio if S8/S1 ratio test fails
       if (isS8S1_==true)
     hf.setFlagField(1,HcalCaloFlagLabels::HFS8S1Ratio);
       // *Always* set the HFLongShort bit if either S8S1 or S9S1 fail
       hf.setFlagField(1,HcalCaloFlagLabels::HFLongShort);
     }
   return;
 } // void HcalHF_S9S1algorithm::HFSetFlagFromS9S1