Creates electronics signals from hits. More...

#include <CaloHitResponse.h>

Inheritance diagram for CaloHitResponse:

Public Types
enum	{ BUNCHSPACE = 25 }
typedef std::map< DetId, CaloSamples >	AnalogSignalMap
Public Member Functions
virtual void	add (const PCaloHit &hit)
	process a single SimHit
void	add (const CaloSamples &signal)
	add a signal, in units of pe
void	addHit (const PCaloHit *hit, CaloSamples &frame) const
	adds the amplitude for a single hit to the frame
double	analogSignalAmplitude (const PCaloHit &hit, const CaloSimParameters &parameters) const
	CaloHitResponse (const CaloVSimParameterMap parameterMap, const CaloVShape shape)
	CaloHitResponse (const CaloVSimParameterMap parameterMap, const CaloShapes shapes)
void	clear ()
	frees up memory
CaloSamples *	findSignal (const DetId &detId)
	users can look for the signal for a given cell
virtual bool	keepBlank () const
virtual CaloSamples	makeAnalogSignal (const PCaloHit &inputHit) const
	creates the signal corresponding to this hit
CaloSamples	makeBlankSignal (const DetId &detId) const
	creates an empty signal for this DetId
int	nSignals () const
	number of signals in the current cache
virtual void	run (MixCollection< PCaloHit > &hits)
	Complete cell digitization.
void	setBunchRange (int minBunch, int maxBunch)
	tells it which pileup bunches to do
void	setGeometry (const CaloGeometry *geometry)
	geometry needed for time-of-flight
void	setHitCorrection (const CaloVHitCorrection *hitCorrection)
	If you want to correct hits, for attenuation or delay, set this.
void	setHitFilter (const CaloVHitFilter *filter)
	if you want to reject hits, for example, from a certain subdetector, set this
void	setPECorrection (const CaloVPECorrection *peCorrection)
	if you want to correct the photoelectrons
void	setPhaseShift (const double &thePhaseShift)
	setting the phase shift for asynchronous trigger (e.g. test beams)
virtual void	setRandomEngine (CLHEP::HepRandomEngine &engine)
double	timeOfFlight (const DetId &detId) const
virtual	~CaloHitResponse ()
	doesn't delete the pointers passed in
Protected Attributes
AnalogSignalMap	theAnalogSignalMap
const CaloGeometry *	theGeometry
const CaloVHitCorrection *	theHitCorrection
const CaloVHitFilter *	theHitFilter
int	theMaxBunch
int	theMinBunch
const CaloVSimParameterMap *	theParameterMap
const CaloVPECorrection *	thePECorrection
double	thePhaseShift_
CLHEP::RandPoissonQ *	theRandPoisson
const CaloVShape *	theShape
const CaloShapes *	theShapes

Detailed Description

Creates electronics signals from hits.

Definition at line 31 of file CaloHitResponse.h.

Member Typedef Documentation

typedef std::map<DetId, CaloSamples> CaloHitResponse::AnalogSignalMap

Definition at line 34 of file CaloHitResponse.h.

Member Enumeration Documentation

anonymous enum

Enumerator:

BUNCHSPACE

Definition at line 36 of file CaloHitResponse.h.

{BUNCHSPACE=25};

Constructor & Destructor Documentation

CaloHitResponse::CaloHitResponse	(	const CaloVSimParameterMap *	parameterMap,
		const CaloVShape *	shape
	)

Definition at line 23 of file CaloHitResponse.cc.

: theAnalogSignalMap(),
  theParameterMap(parametersMap), 
  theShapes(0),  
  theShape(shape),
  theHitCorrection(0),
  thePECorrection(0),
  theHitFilter(0),
  theGeometry(0),
  theRandPoisson(0),
  theMinBunch(-10), 
  theMaxBunch(10),
  thePhaseShift_(1.)
{
}

CaloHitResponse::CaloHitResponse	(	const CaloVSimParameterMap *	parameterMap,
		const CaloShapes *	shapes
	)

Definition at line 41 of file CaloHitResponse.cc.

: theAnalogSignalMap(),
  theParameterMap(parametersMap),
  theShapes(shapes),
  theShape(0),
  theHitCorrection(0),
  thePECorrection(0),
  theHitFilter(0),
  theGeometry(0),
  theRandPoisson(0),
  theMinBunch(-10),
  theMaxBunch(10),
  thePhaseShift_(1.)
{
}

CaloHitResponse::~CaloHitResponse ( ) [virtual]

doesn't delete the pointers passed in

Definition at line 59 of file CaloHitResponse.cc.

References theRandPoisson.

{
  delete theRandPoisson;
}

Member Function Documentation

void CaloHitResponse::add ( const PCaloHit & hit ) [virtual]

process a single SimHit

Definition at line 92 of file CaloHitResponse.cc.

References CaloVHitFilter::accepts(), i, edm::detail::isnan(), keep, keepBlank(), LogDebug, makeAnalogSignal(), findQualityFiles::size, CaloSamples::size(), theHitFilter, and PCaloHit::time().

Referenced by CaloTDigitizer< Traits >::addNoiseHits(), CaloTDigitizer< Traits >::addNoiseSignals(), run(), and HcalSiPMHitResponse::run().

{
  // check the hit time makes sense
  if ( isnan(hit.time()) ) { return; }

  // maybe it's not from this subdetector
  if(theHitFilter == 0 || theHitFilter->accepts(hit)) {
    LogDebug("CaloHitResponse") << hit;
    CaloSamples signal( makeAnalogSignal( hit ) ) ;

    bool keep ( keepBlank() ) ;  // here we  check for blank signal if not keeping them
    if( !keep )
    {
       const unsigned int size ( signal.size() ) ;
       if( 0 != size )
       {
          for( unsigned int i ( 0 ) ; i != size ; ++i )
          {
             keep = keep || signal[i] > 1.e-7 ;
          }
       }
    }
    LogDebug("CaloHitResponse") << signal;
    if( keep ) add(signal);
  }
}

void CaloHitResponse::add ( const CaloSamples & signal )

add a signal, in units of pe

Definition at line 120 of file CaloHitResponse.cc.

References findSignal(), i, CaloSamples::id(), errorMatrix2Lands_multiChannel::id, CaloSamples::presamples(), CaloSamples::size(), and theAnalogSignalMap.

{
  DetId id(signal.id());
  CaloSamples * oldSignal = findSignal(id);
  if (oldSignal == 0) {
    theAnalogSignalMap[id] = signal;
  } else  {
    // need a "+=" to CaloSamples
    int sampleSize =  oldSignal->size();
    assert(sampleSize == signal.size());
    assert(signal.presamples() == oldSignal->presamples());

    for(int i = 0; i < sampleSize; ++i) {
      (*oldSignal)[i] += signal[i];
    }
  }
}

void CaloHitResponse::addHit	(	const PCaloHit *	hit,
		CaloSamples &	frame
	)		const

adds the amplitude for a single hit to the frame

double CaloHitResponse::analogSignalAmplitude	(	const PCaloHit &	hit,
		const CaloSimParameters &	parameters
	)		const

finds the amplitude contribution from this hit, applying photostatistics, if needed. Results are in photoelectrons

Definition at line 177 of file CaloHitResponse.cc.

References CaloVPECorrection::correctPE(), CaloSimParameters::doPhotostatistics(), PCaloHit::energy(), Exception, PCaloHit::id(), edm::Service< T >::isAvailable(), CaloSimParameters::simHitToPhotoelectrons(), thePECorrection, and theRandPoisson.

Referenced by makeAnalogSignal(), and HcalSiPMHitResponse::makeSiPMSignal().

                                                                                                              {

  if(!theRandPoisson)
  {
    edm::Service<edm::RandomNumberGenerator> rng;
    if ( ! rng.isAvailable()) {
      throw cms::Exception("Configuration")
        << "CaloHitResponse 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.";
    }
    theRandPoisson = new CLHEP::RandPoissonQ(rng->getEngine());
  }

  // OK, the "energy" in the hit could be a real energy, deposited energy,
  // or pe count.  This factor converts to photoelectrons
  DetId detId(hit.id());
  double npe = hit.energy() * parameters.simHitToPhotoelectrons(detId);
  // do we need to doPoisson statistics for the photoelectrons?
  if(parameters.doPhotostatistics()) {
    npe = theRandPoisson->fire(npe);
  }
  if(thePECorrection) npe = thePECorrection->correctPE(detId, npe);
  return npe;
}

void CaloHitResponse::clear ( void ) [inline]

frees up memory

Definition at line 81 of file CaloHitResponse.h.

References theAnalogSignalMap.

Referenced by EcalMixingModuleValidation::computeSDBunchDigi(), and CaloTDigitizer< Traits >::run().

{theAnalogSignalMap.clear();}

CaloSamples * CaloHitResponse::findSignal ( const DetId & detId )

users can look for the signal for a given cell

Definition at line 204 of file CaloHitResponse.cc.

References query::result, and theAnalogSignalMap.

Referenced by add(), EcalMixingModuleValidation::computeSDBunchDigi(), and CaloTDigitizer< Traits >::run().

                                                             {
  CaloSamples * result = 0;
  AnalogSignalMap::iterator signalItr = theAnalogSignalMap.find(detId);
  if(signalItr == theAnalogSignalMap.end()) {
     result = 0;
  } 
  else {
     result = &(signalItr->second);
  }
  return result;
}

virtual bool CaloHitResponse::keepBlank ( ) const [inline, virtual]

Definition at line 52 of file CaloHitResponse.h.

References funct::true.

Referenced by add().

{ return true ; }

CaloSamples CaloHitResponse::makeAnalogSignal ( const PCaloHit & inputHit ) const [virtual]

creates the signal corresponding to this hit

Definition at line 139 of file CaloHitResponse.cc.

References analogSignalAmplitude(), newFWLiteAna::bin, BUNCHSPACE, CaloVHitCorrection::correct(), PCaloHit::id(), makeBlankSignal(), Parameters::parameters, query::result, CaloShapes::shape(), CaloVSimParameterMap::simParameters(), CaloSamples::size(), theHitCorrection, theParameterMap, thePhaseShift_, theShape, theShapes, PCaloHit::time(), timeOfFlight(), CaloVShape::timeToRise(), and tzero.

Referenced by add().

                                                                             {

  // see if we need to correct the hit 
  PCaloHit hit = inputHit;

  if(theHitCorrection != 0) {
    theHitCorrection->correct(hit);
  }

  DetId detId(hit.id());
  const CaloSimParameters & parameters = theParameterMap->simParameters(detId);

  double signal = analogSignalAmplitude(hit, parameters);

  double jitter = hit.time() - timeOfFlight(detId);

  const CaloVShape * shape = theShape;
  if(!shape) {
    shape = theShapes->shape(detId);
  }
  // assume bins count from zero, go for center of bin
  const double tzero = ( shape->timeToRise()
                         + parameters.timePhase() 
                         - jitter 
                         - BUNCHSPACE*( parameters.binOfMaximum()
                                        - thePhaseShift_          ) ) ;
  double binTime = tzero;

  CaloSamples result(makeBlankSignal(detId));

  for(int bin = 0; bin < result.size(); bin++) {
    result[bin] += (*shape)(binTime)* signal;
    binTime += BUNCHSPACE;
  }
  return result;
}

CaloSamples CaloHitResponse::makeBlankSignal ( const DetId & detId ) const

creates an empty signal for this DetId

Definition at line 217 of file CaloHitResponse.cc.

References CaloSimParameters::binOfMaximum(), Parameters::parameters, CaloSimParameters::readoutFrameSize(), query::result, CaloVSimParameterMap::simParameters(), and theParameterMap.

Referenced by makeAnalogSignal(), HcalSiPMHitResponse::makeSiPMSignal(), and CaloTDigitizer< Traits >::run().

                                                                      {
  const CaloSimParameters & parameters = theParameterMap->simParameters(detId);
  CaloSamples result(detId, parameters.readoutFrameSize());
  result.setPresamples(parameters.binOfMaximum()-1);
  return result;
}

int CaloHitResponse::nSignals ( ) const [inline]

number of signals in the current cache

Definition at line 97 of file CaloHitResponse.h.

References theAnalogSignalMap.

Referenced by CaloTDigitizer< Traits >::run().

{return theAnalogSignalMap.size();}

void CaloHitResponse::run ( MixCollection< PCaloHit > & hits ) [virtual]

Complete cell digitization.

Reimplemented in HcalSiPMHitResponse.

Definition at line 77 of file CaloHitResponse.cc.

References add(), MixCollection< T >::begin(), MixCollection< T >::end(), theMaxBunch, and theMinBunch.

Referenced by EcalMixingModuleValidation::computeSDBunchDigi(), and CaloTDigitizer< Traits >::run().

                                                        {

  for(MixCollection<PCaloHit>::MixItr hitItr = hits.begin();
      hitItr != hits.end(); ++hitItr)
  {
    // check the bunch crossing range
    if ( hitItr.bunch() < theMinBunch || hitItr.bunch() > theMaxBunch ) 
      { continue; }
  
    add(*hitItr);
  } // loop over hits
}

void CaloHitResponse::setBunchRange	(	int	minBunch,
		int	maxBunch
	)

tells it which pileup bunches to do

Definition at line 65 of file CaloHitResponse.cc.

References theMaxBunch, and theMinBunch.

Referenced by EcalMixingModuleValidation::computeSDBunchDigi().

                                                              {
  theMinBunch = minBunch;
  theMaxBunch = maxBunch;
}

void CaloHitResponse::setGeometry ( const CaloGeometry * geometry ) [inline]

geometry needed for time-of-flight

Definition at line 49 of file CaloHitResponse.h.

References geometry, and theGeometry.

Referenced by CastorDigiProducer::checkGeometry(), EcalMixingModuleValidation::computeSDBunchDigi(), HcalTBDigiProducer::updateGeometry(), HcalDigitizer::updateGeometry(), and EcalDigiProducer::updateGeometry().

{ theGeometry = geometry; }

void CaloHitResponse::setHitCorrection ( const CaloVHitCorrection * hitCorrection ) [inline]

If you want to correct hits, for attenuation or delay, set this.

Definition at line 69 of file CaloHitResponse.h.

References theHitCorrection.

Referenced by CastorDigiProducer::CastorDigiProducer(), and HcalTBDigiProducer::HcalTBDigiProducer().

                                                                  {
    theHitCorrection = hitCorrection;
  }

void CaloHitResponse::setHitFilter ( const CaloVHitFilter * filter ) [inline]

if you want to reject hits, for example, from a certain subdetector, set this

Definition at line 64 of file CaloHitResponse.h.

References alcazmumu_cfi::filter, and theHitFilter.

Referenced by CastorDigiProducer::CastorDigiProducer(), HcalDigitizer::HcalDigitizer(), and HcalTBDigiProducer::HcalTBDigiProducer().

                                                   {
    theHitFilter = filter;
  }

void CaloHitResponse::setPECorrection ( const CaloVPECorrection * peCorrection ) [inline]

if you want to correct the photoelectrons

Definition at line 74 of file CaloHitResponse.h.

References thePECorrection.

Referenced by HcalDigitizer::HcalDigitizer().

                                                               {
    thePECorrection = peCorrection;
  }

void CaloHitResponse::setPhaseShift ( const double & thePhaseShift ) [inline]

setting the phase shift for asynchronous trigger (e.g. test beams)

Definition at line 108 of file CaloHitResponse.h.

References thePhaseShift_.

Referenced by HcalTBDigiProducer::setPhaseShift().

{ thePhaseShift_ = thePhaseShift; }

void CaloHitResponse::setRandomEngine ( CLHEP::HepRandomEngine & engine ) [virtual]

Reimplemented in HcalSiPMHitResponse.

Definition at line 71 of file CaloHitResponse.cc.

References theRandPoisson.

Referenced by CaloTDigitizer< Traits >::setRandomEngine().

{
  theRandPoisson = new CLHEP::RandPoissonQ(engine);
}

double CaloHitResponse::timeOfFlight ( const DetId & detId ) const

time-of-flight, in ns, to get to this cell returns 0 if no geometry has been set

Definition at line 225 of file CaloHitResponse.cc.

References CaloSubdetectorGeometry::getGeometry(), CaloCellGeometry::getPosition(), CaloGeometry::getSubdetectorGeometry(), PV3DBase< T, PVType, FrameType >::mag(), DetId::rawId(), query::result, and theGeometry.

Referenced by makeAnalogSignal(), and HcalSiPMHitResponse::makeSiPMSignal().

                                                              {
  // not going to assume there's one of these per subdetector.
  // Take the whole CaloGeometry and find the right subdet
  double result = 0.;
  if(theGeometry == 0) {
    edm::LogWarning("CaloHitResponse") << "No Calo Geometry set, so no time of flight correction";
  } 
  else {
    const CaloCellGeometry* cellGeometry = theGeometry->getSubdetectorGeometry(detId)->getGeometry(detId);
    if(cellGeometry == 0) {
       edm::LogWarning("CaloHitResponse") << "No Calo cell found for ID"
         << detId.rawId() << " so no time-of-flight subtraction will be done";
    }
    else {
      double distance = cellGeometry->getPosition().mag();
      result =  distance * cm / c_light; // Units of c_light: mm/ns
    }
  }
  return result;
}