EMECDetDescr Class Reference

Descriptor for regions of the electromagnetic endcap calorimeter. More...

#include <EMECDetDescr.h>

Inheritance diagram for EMECDetDescr:

Collaboration diagram for EMECDetDescr:

Public Member Functions
	EMECDetDescr (const EMECDetectorManager *detManager, unsigned int sampling, unsigned int region, unsigned int radialPart, const CellBinning &phiBinning)
	Constructor. More...
	~EMECDetDescr ()
	Destructor More...
double	getOffset (unsigned int etaIndex) const
	Gets the offset position (cell centers with respect to the position of the front of the active volume of the EMEC, or middle of the presamper.). More...
double	getHalfLength (unsigned int etaIndex) const
	gets the cell half-length in z. More...
const EMECDetectorManager *	getManager () const
	The manager. More...
unsigned int	getSamplingIndex () const
	The sampling index. More...
unsigned int	getRegionIndex () const
	The region index. More...
unsigned int	getRadialIndex () const
	The radial index of this cell (0=Outer Wheel, 1=Inner Wheel). More...
const CellBinning &	getPhiBinning () const
	The Binning in Phi. More...
const CellBinning &	getEtaBinning () const
	The Binning in Eta. More...

Private Member Functions
	EMECDetDescr (const EMECDetDescr &right)

Private Attributes
const EMECDetectorManager *	m_manager
unsigned int	m_samplingIndex
unsigned int	m_regionIndex
unsigned int	m_radialIndex
CellBinning	m_phiBinning
CellBinning	m_etaBinning
std::vector< double >	m_halfLength
	Vector of half-lengths for the cells, one for each eta index. More...
std::vector< double >	m_offset
	Vector of cell center positions for the cells, one for each eta index. More...

Detailed Description

Descriptor for regions of the electromagnetic endcap calorimeter.

This class describes completely the segmentation in eta and phi, and also the longitudinal boundaries of cells within a region of the EMEC. This descriptor does not need to ever be accessed directly. If you are tempted to use it directly, look first at the EMECDetectorRegion and the EMECCell class. EMECCells obtained from a EMECDetectorRegion is normally a preferred way to access all of the information in the EMECDetDescr class.

Definition at line 26 of file EMECDetDescr.h.

Constructor & Destructor Documentation

EMECDetDescr() [1/2]

EMECDetDescr::EMECDetDescr	(	const EMECDetectorManager *	detManager,
		unsigned int	sampling,
		unsigned int	region,
		unsigned int	radialPart,
		const CellBinning &	phiBinning
	)

Constructor.

Definition at line 35 of file EMECDetDescr.cxx.

  : m_manager(detManager)
  , m_samplingIndex(sampling)
  , m_regionIndex(region)
  , m_radialIndex(radialPart) 
  , m_phiBinning(phiBinning)
  , m_etaBinning(etaBoundariesEndcap[sampling][radialPart][region].min
         ,etaBoundariesEndcap[sampling][radialPart][region].max
         ,etaBoundariesEndcap[sampling][radialPart][region].nDiv)
{
  // This contains some logic for decoding the sampling separation arrays:
  if (sampling==0) {
    m_halfLength.push_back(m_manager->getPresamplerFullLength()/2.0); 
    m_offset.push_back    (0);
    return;
  }
 
  double eta0, dEta;
  if (m_radialIndex ==0 ) {     // Outer Wheel.
    eta0=1.4;
    dEta=0.025;
  }
  else if (m_radialIndex==1) {  // Inner Wheel
    eta0=2.5;
    dEta=0.1;
  }
  else {
    throw std::range_error("Attempt to construct EMEC DetDescr with illegal index combinations");
  }
 
  const double inv_dEta = 1. / dEta;
 
  for (unsigned int i=0;i<m_etaBinning.getNumDivisions();i++) {
    double eta = m_etaBinning.binCenter(i);
    int ipad = int((eta - eta0) * inv_dEta);
    double front,back;
    if (m_radialIndex ==0 ) {     // Outer Wheel.
      if (sampling==1) {
    front=0;
    back = m_manager->getZSEP12(ipad)-m_manager->getFocalToRef()-m_manager->getRefToActive();
      }
      else if (sampling==2) {
 
    //  std::min is used to max out the length to the total active length; this is for
    //  cells that spill out the side.  They will have funny volumes. 
 
    front = m_manager->getZSEP12(ipad)-m_manager->getFocalToRef()-m_manager->getRefToActive();
    back  = std::min(m_manager->getActiveLength(),m_manager->getZSEP23(ipad/2)-m_manager->getFocalToRef()-m_manager->getRefToActive());
      }      
      else if (sampling==3) {
    front  = m_manager->getZSEP23(ipad/2)-m_manager->getFocalToRef()-m_manager->getRefToActive();
    back   = m_manager->getActiveLength();
      } 
      else {
    throw std::range_error("Attempt to construct EMEC DetDescr with illegal index combinations");
      }
     
    }
    else if (m_radialIndex==1) {  // Inner Wheel
      if (sampling==1) {
    front=0;
    back = m_manager->getZIW(ipad) - m_manager->getFocalToRef() - m_manager->getRefToActive();
      }
      else if (sampling==2) {
    front = m_manager->getZIW(ipad) - m_manager->getFocalToRef() - m_manager->getRefToActive();
    back     = m_manager->getActiveLength();
      }
      else {
    throw std::range_error("Attempt to construct EMEC DetDescr with illegal index combinations");
      }
    }
    else {
      throw std::range_error("Attempt to construct EMEC DetDescr with illegal index combinations");
    }
    m_offset.push_back((front+back)/2.);
    m_halfLength.push_back((back-front)/2.);
  }
}

~EMECDetDescr()

EMECDetDescr::~EMECDetDescr ( )

default

Destructor

EMECDetDescr() [2/2]

EMECDetDescr::EMECDetDescr ( const EMECDetDescr &  right )

private

Member Function Documentation

getEtaBinning()

const CellBinning & EMECDetDescr::getEtaBinning ( ) const

inline

The Binning in Eta.

Definition at line 177 of file EMECDetDescr.h.

{
  
  return m_etaBinning;
  
}

getHalfLength()

double EMECDetDescr::getHalfLength ( unsigned int  etaIndex ) const

inline

gets the cell half-length in z.

Definition at line 132 of file EMECDetDescr.h.

{
  
  if (m_halfLength.size()==1) return m_halfLength[0];
  return m_halfLength[etaIndex];
  
}

getManager()

const EMECDetectorManager * EMECDetDescr::getManager ( ) const

inline

The manager.

Definition at line 142 of file EMECDetDescr.h.

{
  
  return m_manager;
  
}

getOffset()

double EMECDetDescr::getOffset ( unsigned int  etaIndex ) const

inline

Gets the offset position (cell centers with respect to the position of the front of the active volume of the EMEC, or middle of the presamper.).

Definition at line 124 of file EMECDetDescr.h.

{
  
  if (m_offset.size()==1) return m_offset[0];
  return m_offset[etaIndex];
  
}

getPhiBinning()

const CellBinning & EMECDetDescr::getPhiBinning ( ) const

inline

The Binning in Phi.

Definition at line 170 of file EMECDetDescr.h.

{
  
  return m_phiBinning;
  
}

getRadialIndex()

unsigned int EMECDetDescr::getRadialIndex ( ) const

inline

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

Definition at line 163 of file EMECDetDescr.h.

{
  
  return m_radialIndex;
  
}

getRegionIndex()

unsigned int EMECDetDescr::getRegionIndex ( ) const

inline

The region index.

Definition at line 156 of file EMECDetDescr.h.

{
  
  return m_regionIndex;
  
}

getSamplingIndex()

unsigned int EMECDetDescr::getSamplingIndex ( ) const

inline

The sampling index.

Definition at line 149 of file EMECDetDescr.h.

{
  
  return m_samplingIndex;
  
}

Member Data Documentation

m_etaBinning

CellBinning EMECDetDescr::m_etaBinning

private

Definition at line 94 of file EMECDetDescr.h.

m_halfLength

std::vector<double> EMECDetDescr::m_halfLength

private

Vector of half-lengths for the cells, one for each eta index.

(From the database table EmecSamplingSep and other related tables.)

Definition at line 100 of file EMECDetDescr.h.

m_manager

const EMECDetectorManager* EMECDetDescr::m_manager

private

Definition at line 89 of file EMECDetDescr.h.

m_offset

std::vector<double> EMECDetDescr::m_offset

private

Vector of cell center positions for the cells, one for each eta index.

These numbers are relative to the front face of the EMEC active volume. This happens to be the z=0 face of the local coordinate system in the EMEC, but that little detail depends critically on the way the Geo Model description is implemented and may be false by the time you read this comment. For the presampler the offset is relative to the middle of the presampler active volume, which is also z=0 for the presampler local coordinate (with the same caveats as above).

(From the database table EmecSamplingSep and other related tables.)

Definition at line 116 of file EMECDetDescr.h.

m_phiBinning

CellBinning EMECDetDescr::m_phiBinning

private

Definition at line 93 of file EMECDetDescr.h.

m_radialIndex

unsigned int EMECDetDescr::m_radialIndex

private

Definition at line 92 of file EMECDetDescr.h.

m_regionIndex

unsigned int EMECDetDescr::m_regionIndex

private

Definition at line 91 of file EMECDetDescr.h.

m_samplingIndex

unsigned int EMECDetDescr::m_samplingIndex

private

Definition at line 90 of file EMECDetDescr.h.

---

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

• EMECDetDescr.h
• EMECDetDescr.cxx