EMECCell Class Reference

A Cell of the electromagnetic endcap calorimeter readout geometry This class represents a single EMEC Cell. More...

#include <EMECCell.h>

Inheritance diagram for EMECCell:

Collaboration diagram for EMECCell:

Classes
struct	HVInfo

Public Types
enum	CELLPOS { FRONT , CENTER , BACK }

Public Member Functions
	EMECCell (unsigned int endcap, const EMECDetDescr *emecDescriptor, unsigned int eta, unsigned int phi)
	Constructor.
unsigned int	getPhiIndex () const
	The Phi Index of this Cell.
unsigned int	getEndcapIndex () const
	The EndcapIndex of this Cell (0=negatiive, 1=positive)
unsigned int	getEtaIndex () const
	The eta index of this cell.
unsigned int	getSamplingIndex () const
	The sampling index of this cell.
unsigned int	getRegionIndex () const
	The region index of this cell.
unsigned int	getRadialIndex () const
	The radial index of this cell (0=Outer Wheel, 1=Inner Wheel).
const EMECDetDescr *	getDescriptor () const
	Returns a pointer to the descriptor.
double	getZLocal (CELLPOS position) const
	Z for the cell at (FRONT,CENTER,BACK)
double	getRMinLocal (CELLPOS position) const
	RMin for the cell at (FRONT,CENTER,BACK)
double	getRMaxLocal (CELLPOS position) const
	RMax for the cell at (FRONT,CENTER,BACK)
double	getPhiLocalLower () const
	Gets the phi value at the "lower" edge of a cell.
double	getPhiLocalUpper () const
	Gets the phi value at the "lower" edge of a cell.
double	getPhiMinNominal () const
	returns a nominal phi min in global coords; assume canonical placement
double	getPhiMaxNominal () const
	returns a nominal phi max in global coords; assume canonical placement
double	getEtaMin () const
	Minimum Eta.
double	getEtaMax () const
	Maximum Eta.
unsigned int	getNumElectrodes () const
	@Get num electrodes
const EMECHVElectrode &	getElectrode (unsigned int i) const
	@Get electrode
const EMECPresamplerHVModule &	getPresamplerHVModule () const
	@Get HVModule (presampler cells)

Private Member Functions
	EMECCell (const EMECCell &right)
virtual	~EMECCell ()
EMECCell &	operator= (const EMECCell &right)
const HVInfo &	getHVInfo () const
void	initHV (HVInfo &hvinfo) const

Private Attributes
const EMECDetDescr *	m_emecDetDescr
CxxUtils::CachedValue< HVInfo >	m_hvinfo
unsigned int	m_clockwork

Friends
class	ImaginaryFriend

Detailed Description

A Cell of the electromagnetic endcap calorimeter readout geometry This class represents a single EMEC Cell.

These cells are specified by phi and eta boundaries, the latter which corresponds to an inner and outer radius computed from and effective focal length. Those numbers come from the database via the EMEC DetectorManager

Use the EMEC Cells through EMEC Cell Links please!!! This will free the memory used by the cell when the last link to the cell disappears.

Definition at line 31 of file EMECCell.h.

Member Enumeration Documentation

CELLPOS

enum EMECCell::CELLPOS

Enumerator
FRONT
CENTER
BACK

Definition at line 36 of file EMECCell.h.

{FRONT,CENTER,BACK} CELLPOS;

Constructor & Destructor Documentation

EMECCell() [1/2]

EMECCell::EMECCell ( unsigned int endcap, const EMECDetDescr * emecDescriptor, unsigned int eta, unsigned int phi )

inline

Constructor.

Definition at line 177 of file EMECCell.h.

 :m_emecDetDescr(emecDescriptor),m_clockwork(phi | (eta<<8) | (endcap <<15) )
{
  
}

EMECCell() [2/2]

EMECCell::EMECCell ( const EMECCell & right )

private

Member Function Documentation

getDescriptor()

const EMECDetDescr * EMECCell::getDescriptor ( ) const

inline

Returns a pointer to the descriptor.

Definition at line 229 of file EMECCell.h.

{
  
  return m_emecDetDescr;
  
}

getElectrode()

const EMECHVElectrode & EMECCell::getElectrode

(

unsigned int

i

)

const

@Get electrode

Definition at line 21 of file EMECCell.cxx.

                                                                   {
  return *getHVInfo().m_electrode[i];
}

getEndcapIndex()

unsigned int EMECCell::getEndcapIndex ( ) const

inline

The EndcapIndex of this Cell (0=negatiive, 1=positive)

Definition at line 194 of file EMECCell.h.

{
  
  return  (m_clockwork & 0x00008000) >> 15;
  
}

getEtaIndex()

unsigned int EMECCell::getEtaIndex ( ) const

inline

The eta index of this cell.

Definition at line 201 of file EMECCell.h.

{
  
  return  (m_clockwork & 0x00007F00) >> 8;
  
}

getEtaMax()

double EMECCell::getEtaMax ( ) const

inline

Maximum Eta.

Definition at line 300 of file EMECCell.h.

{
  
  return getDescriptor()->getEtaBinning().binUpper(getEtaIndex());
  
}

getEtaMin()

double EMECCell::getEtaMin ( ) const

inline

Minimum Eta.

Definition at line 293 of file EMECCell.h.

{
  
  return getDescriptor()->getEtaBinning().binLower(getEtaIndex()); 
  
}

getHVInfo()

const EMECCell::HVInfo & EMECCell::getHVInfo ( ) const

private

Definition at line 30 of file EMECCell.cxx.

{
  if (!m_hvinfo.isValid()) {
    HVInfo hvinfo;
    initHV (hvinfo);
    m_hvinfo.set (std::move (hvinfo));
  }
  return *m_hvinfo.ptr();
}

getNumElectrodes()

unsigned int EMECCell::getNumElectrodes

(

)

const

@Get num electrodes

Definition at line 17 of file EMECCell.cxx.

                                              {
  return getHVInfo().m_electrode.size();
}

getPhiIndex()

unsigned int EMECCell::getPhiIndex ( ) const

inline

The Phi Index of this Cell.

Definition at line 187 of file EMECCell.h.

{
  
   return m_clockwork & 0x000000FF;
  
}

getPhiLocalLower()

double EMECCell::getPhiLocalLower ( ) const

inline

Gets the phi value at the "lower" edge of a cell.

This is a local phi!!! It's useful for constructing exact phi boundaries in the local coordinate system.

Definition at line 268 of file EMECCell.h.

{
  
  return getDescriptor()->getPhiBinning().binLower(getPhiIndex());
  
}

getPhiLocalUpper()

double EMECCell::getPhiLocalUpper ( ) const

inline

Gets the phi value at the "lower" edge of a cell.

This is a local phi!!! It's useful for constructing exact phi boundaries in the local coordinate system.

Definition at line 275 of file EMECCell.h.

{
  
  return getDescriptor()->getPhiBinning().binUpper(getPhiIndex());
  
}

getPhiMaxNominal()

double EMECCell::getPhiMaxNominal ( ) const

inline

returns a nominal phi max in global coords; assume canonical placement

Definition at line 288 of file EMECCell.h.

{
  return getEndcapIndex()==0 ? M_PI-getPhiLocalUpper() : getPhiLocalUpper();
}

getPhiMinNominal()

double EMECCell::getPhiMinNominal ( ) const

inline

returns a nominal phi min in global coords; assume canonical placement

Definition at line 283 of file EMECCell.h.

{
  return getEndcapIndex()==0 ? M_PI-getPhiLocalLower() : getPhiLocalLower();
}

getPresamplerHVModule()

const EMECPresamplerHVModule & EMECCell::getPresamplerHVModule

(

)

const

@Get HVModule (presampler cells)

Definition at line 25 of file EMECCell.cxx.

                                                                     {
  return *getHVInfo().m_presamplerModule;
}

getRadialIndex()

unsigned int EMECCell::getRadialIndex ( ) const

inline

The radial index of this cell (0=Outer Wheel, 1=Inner Wheel).

Definition at line 222 of file EMECCell.h.

{
  
  return getDescriptor()->getRadialIndex();
  
}

getRegionIndex()

unsigned int EMECCell::getRegionIndex ( ) const

inline

The region index of this cell.

Definition at line 215 of file EMECCell.h.

{
  
  return getDescriptor()->getRegionIndex();
  
}

getRMaxLocal()

double EMECCell::getRMaxLocal ( CELLPOS position ) const

inline

RMax for the cell at (FRONT,CENTER,BACK)

Definition at line 260 of file EMECCell.h.

{
  
  double toActive = getDescriptor()->getSamplingIndex()==0 ? getDescriptor()->getManager()->getRefToPresampler() : getDescriptor()->getManager()->getRefToActive();
  return (getDescriptor()->getManager()->getFocalToRef()+toActive+getZLocal(position))/sinh(getEtaMin());
  
}

getRMinLocal()

double EMECCell::getRMinLocal ( CELLPOS position ) const

inline

RMin for the cell at (FRONT,CENTER,BACK)

Definition at line 252 of file EMECCell.h.

{
  
  double toActive = getDescriptor()->getSamplingIndex()==0 ? getDescriptor()->getManager()->getRefToPresampler() : getDescriptor()->getManager()->getRefToActive();
  return (getDescriptor()->getManager()->getFocalToRef()+toActive+getZLocal(position))/sinh(getEtaMax());
  
}

getSamplingIndex()

unsigned int EMECCell::getSamplingIndex ( ) const

inline

The sampling index of this cell.

Definition at line 208 of file EMECCell.h.

{
  
  return getDescriptor()->getSamplingIndex();
  
}

getZLocal()

double EMECCell::getZLocal ( CELLPOS position ) const

inline

Z for the cell at (FRONT,CENTER,BACK)

Definition at line 236 of file EMECCell.h.

{
  
  switch (position) {
  case FRONT:
    return getDescriptor()->getOffset(getEtaIndex())-getDescriptor()->getHalfLength(getEtaIndex());
  case CENTER:
    return getDescriptor()->getOffset(getEtaIndex());
  case BACK:
    return getDescriptor()->getOffset(getEtaIndex())+getDescriptor()->getHalfLength(getEtaIndex());
  default :
    return 0;
  };
  
}

initHV()

void EMECCell::initHV ( HVInfo & hvinfo ) const

private

Definition at line 41 of file EMECCell.cxx.

{
  if (getSamplingIndex()==0) {
    const EMECPresamplerHVManager& presamplerHVManager=getDescriptor()->getManager()->getPresamplerHVManager();
    double phiUpper = getPhiMaxNominal();
    double phiLower = getPhiMinNominal();
    double phi=fabs(phiUpper+phiLower)/2.0;
 
    const CellBinning * phiBinning=presamplerHVManager.getPhiBinning();
    unsigned int iPhi = int((phi - phiBinning->getStart())/phiBinning->getDelta()) + phiBinning->getFirstDivisionNumber();
    unsigned int iSide=getEndcapIndex();
    hvinfo.m_presamplerModule = &(presamplerHVManager.getHVModule(iSide,iPhi));
 
  }
  else {
  
    double eta=fabs(getEtaMax()+getEtaMin())/2.0;
    EMECHVModule::IOType iotype = eta < 2.5 ? EMECHVModule::OUTER : EMECHVModule::INNER;
    //std::cout << "in  EMECCell::initHV()   eta,type " << eta << " " << iotype << std::endl;
    
    const EMECHVManager& hvManager=getDescriptor()->getManager()->getHVManager(iotype);
    double phiLower = getPhiMinNominal();
    double phiUpper = getPhiMaxNominal();
    double phiMid=(phiLower+phiUpper)/2.0;
    
    const CellPartitioning & etaBinning=hvManager.getDescriptor().getEtaBinning();
    const CellBinning & phiBinning=hvManager.getDescriptor().getPhiBinning();
    const CellBinning & sectorBinning=hvManager.getDescriptor().getSectorBinning();
    unsigned int iEta=0;
    for (unsigned int i=etaBinning.getFirstDivisionNumber();i<=etaBinning.getFirstDivisionNumber()+etaBinning.getNumDivisions();i++) {
      if (eta>=etaBinning.binLower(i) && eta<=etaBinning.binUpper(i)) {
    iEta=i;
      }
    }
    unsigned int iPhi = int((phiMid - phiBinning.getStart())/phiBinning.getDelta()) + phiBinning.getFirstDivisionNumber();
    
    double N         = iotype==EMECHVModule::OUTER ? 768:256;
    
    unsigned int iSector = int((phiMid   - phiBinning.binLower(iPhi) - sectorBinning.getStart())/sectorBinning.getDelta()) + sectorBinning.getFirstDivisionNumber();
    double phiSectorStart = phiBinning.binLower(iPhi) +iSector*sectorBinning.getDelta();
    
    unsigned int iSide=getEndcapIndex();
    
    double phi0 = (iSide==1) ? M_PI/N : -(M_PI)/N;      // delta phi between first absorber and electrode at phi=0
 
    const double inv_2pi = M_1_PI/2;
    unsigned int iOffset  = int(N*(phiLower-phiSectorStart + phi0)*inv_2pi +0.5);
    double dPhi = fabs((phiUpper-phiLower));
    unsigned int NE      =int(dPhi*inv_2pi*N+0.5);
    
    //std::cout << " iSide,iEta,iPhi,iSector " << iSide << " " << iEta << " " << iPhi << " " << iSector << std::endl;
    //std::cout << " phi1,phi2 cell, phi1 sector " << phiLower << " " << phiUpper << " " << phiSectorStart << std::endl;
    //std::cout << " first electrode " << iOffset << " " << " Nelectrodes " << NE << std::endl;
    
    
    
    const EMECHVModule& hvMod = hvManager.getHVModule(iSide,iEta,iPhi,iSector);  
    //std::cout <<   " hvMod << " << hvMod << std::endl;
    for (unsigned int iElectrode=iOffset;iElectrode<iOffset+NE;iElectrode++) {
      const EMECHVElectrode& hvElec = hvMod.getElectrode(iElectrode);
      hvinfo.m_electrode.push_back(&hvElec);
    }
    
  } 
}

operator=()

EMECCell & EMECCell::operator= ( const EMECCell & right )

private

~EMECCell()

EMECCell::~EMECCell ( )

privatevirtualdefault

Friends And Related Symbol Documentation

ImaginaryFriend

friend class ImaginaryFriend

friend

Definition at line 168 of file EMECCell.h.

Member Data Documentation

m_clockwork

unsigned int EMECCell::m_clockwork

private

Definition at line 165 of file EMECCell.h.

m_emecDetDescr

const EMECDetDescr* EMECCell::m_emecDetDescr

private

Definition at line 155 of file EMECCell.h.

m_hvinfo

CxxUtils::CachedValue<HVInfo> EMECCell::m_hvinfo

private

Definition at line 163 of file EMECCell.h.

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The documentation for this class was generated from the following files:

• EMECCell.h
• EMECCell.cxx