The Class for ARICH simulation parameters. More...

#include <ARICHSimulationPar.h>

Inheritance diagram for ARICHSimulationPar:

Public Member Functions
	ARICHSimulationPar ()
	Default constructor.

double	getQE (double e) const
	Get QE at given energy.

double	getColEff () const
	Get HAPD collection efficiency.

double	getQEScaling () const
	Get QE scaling factor for photons internally reflected in HAPD window.

double	getWindowAbsorbtion () const
	Get absorbtion probability for photons internally reflected in HAPD window.

double	getChipNegativeCrosstalk () const
	Get factor to suppress p.e.

double	getNBkgHits () const
	Get number of flat background hits/hapd/event to be added in digitizer.

void	setQECurve (float lambdaFirst, float lambdaStep, const std::vector< float > &qe)
	Set QE curve.

void	setNBkgHits (float nbkg)
	Set number of flat background hits/hapd/event to be added in digitizer.

void	setQEScaling (double qescale)
	Set QE scaling factor for photons internally reflected in HAPD window.

void	setWindowAbsorbtion (double abs)
	Set absorbtion probability for photons internally reflected in HAPD window.

void	setChipNegativeCrosstalk (double cross)
	Set factor to suppress p.e.

void	setCollectionEff (double colEff)
	Set HAPD collection efficiency.

void	setPeakQE (double peak)
	Set peak QE value (for HAPD with maximal QE, at later stage HAPD dependent scaling is done)

void	print () const
	print class content

Private Member Functions
	ClassDef (ARICHSimulationPar, 2)
	ClassDef, must be the last term before the closing {}.

Private Attributes
float	m_qeScale = 0
	QE scale factor for photons internally reflected in HAPD window.

float	m_windowAbsorbtion = 0
	absorbtion probability for photons internally reflected in HAPD window

float	m_chipNegativeCrosstalk = 0
	to simulate opposite polarity crosstalk among channels on chip

float	m_peakQE = 0
	maximal peak QE of all HAPDs

std::vector< float >	m_qe
	quantum efficiency curve

float	m_colEff = 0
	collection efficiency

float	m_lambdaFirst = 0
	wavelength [nm]: first QE data point

float	m_lambdaStep = 0
	wavelength [nm]: step

float	m_nBkgHits = 0
	number if flat background hits/hapd/event to be added in digitizer

Detailed Description

The Class for ARICH simulation parameters.

This class provides ARICH paramters for simulation, such as QE vs. wavelength curve for HAPDs, parameters to describe negative polarity crosstalk of channels of APD, ...

Definition at line 24 of file ARICHSimulationPar.h.

Constructor & Destructor Documentation

◆ ARICHSimulationPar()

ARICHSimulationPar ( )

inline

Default constructor.

Definition at line 29 of file ARICHSimulationPar.h.

29{};

Member Function Documentation

◆ getChipNegativeCrosstalk()

double getChipNegativeCrosstalk ( ) const

inline

Get factor to suppress p.e.

detection efficiency due to negative polarity crosstalk among chip channels

Definition at line 57 of file ARICHSimulationPar.h.

57{return (double)m_chipNegativeCrosstalk;}

Belle2::ARICHSimulationPar::m_chipNegativeCrosstalk

float m_chipNegativeCrosstalk

to simulate opposite polarity crosstalk among channels on chip

Definition: ARICHSimulationPar.h:117

◆ getColEff()

double getColEff ( ) const

inline

Get HAPD collection efficiency.

Returns: collection efficiency

Definition at line 42 of file ARICHSimulationPar.h.

42{return (double)m_colEff;}

Belle2::ARICHSimulationPar::m_colEff

float m_colEff

collection efficiency

Definition: ARICHSimulationPar.h:121

◆ getNBkgHits()

double getNBkgHits ( ) const

inline

Get number of flat background hits/hapd/event to be added in digitizer.

Definition at line 62 of file ARICHSimulationPar.h.

62{return (double)m_nBkgHits;}

Belle2::ARICHSimulationPar::m_nBkgHits

float m_nBkgHits

number if flat background hits/hapd/event to be added in digitizer

Definition: ARICHSimulationPar.h:124

◆ getQE()

double getQE ( double e ) const

Get QE at given energy.

Parameters

e	photon energy [eV]

Returns: QE

Definition at line 17 of file ARICHSimulationPar.cc.

{
  if (e < 0.001) return 0;
  if (m_qe.size() == 0) B2ERROR("ARICHSimulationPar: QE curve not initialized!");
  double dlam = 1240 / e - m_lambdaFirst;
 
  int i = int(dlam / m_lambdaStep);
  if (i < 0) i = 0;
  if (i > int(m_qe.size()) - 2) return 0;
 
  // linear interpolation
  double qe = m_qe[i] + (m_qe[i + 1] - m_qe[i]) / m_lambdaStep * (dlam - i * m_lambdaStep);
  return qe * m_peakQE;
}

◆ getQEScaling()

double getQEScaling ( ) const

inline

Get QE scaling factor for photons internally reflected in HAPD window.

Definition at line 47 of file ARICHSimulationPar.h.

47{return (double)m_qeScale;}

Belle2::ARICHSimulationPar::m_qeScale

float m_qeScale

QE scale factor for photons internally reflected in HAPD window.

Definition: ARICHSimulationPar.h:115

◆ getWindowAbsorbtion()

double getWindowAbsorbtion ( ) const

inline

Get absorbtion probability for photons internally reflected in HAPD window.

Definition at line 52 of file ARICHSimulationPar.h.

52{return (double)m_windowAbsorbtion;}

Belle2::ARICHSimulationPar::m_windowAbsorbtion

float m_windowAbsorbtion

absorbtion probability for photons internally reflected in HAPD window

Definition: ARICHSimulationPar.h:116

◆ print()

void print ( ) const

print class content

Definition at line 39 of file ARICHSimulationPar.cc.

{
  cout << endl;
  cout << "ARICH simulation parameters" << endl;
  cout << endl;
  cout << " QE curve (peak should be above QE of highest QE HAPD!)" << endl;
  int ipoint = 0;
  cout << "  wl [nm]   QE" << endl;
  for (auto qe : m_qe) {
    float lambda = m_lambdaFirst + ipoint * m_lambdaStep;
    cout << "  " << lambda << "      " << qe* m_peakQE << endl;
    ipoint++;
  }
 
  cout << endl;
  cout << " HAPD simulation parameters" << endl;
  cout << "  QE scaling for photons internally reflected in HAPD window: " << getQEScaling() << endl;
  cout << "  absorbtion probablity for internally reflected photons:     " << getWindowAbsorbtion() << endl;
  cout << "  channels negative crosstalk factor:                         " << getChipNegativeCrosstalk() << endl;
  cout << "  collection efficiency:                                      " << m_colEff << endl;
}

◆ setChipNegativeCrosstalk()

void setChipNegativeCrosstalk ( double cross )

inline

Set factor to suppress p.e.

detection efficiency due to negative polarity crosstalk among chip channels

Parameters

cross level of negative crosstalk

Definition at line 94 of file ARICHSimulationPar.h.

94{ m_chipNegativeCrosstalk = (float)cross;}

◆ setCollectionEff()

void setCollectionEff ( double colEff )

inline

Set HAPD collection efficiency.

Parameters

colEff collection efficiency

Definition at line 100 of file ARICHSimulationPar.h.

100{m_colEff = (float)colEff;}

◆ setNBkgHits()

void setNBkgHits ( float nbkg )

inline

Set number of flat background hits/hapd/event to be added in digitizer.

Parameters

nbkg	number of background hits/hapd/event

Definition at line 76 of file ARICHSimulationPar.h.

76{ m_nBkgHits = nbkg;}

◆ setPeakQE()

void setPeakQE ( double peak )

inline

Set peak QE value (for HAPD with maximal QE, at later stage HAPD dependent scaling is done)

Parameters

peak	QE at peak

Definition at line 106 of file ARICHSimulationPar.h.

106{m_peakQE = (float)peak;}

◆ setQECurve()

void setQECurve	(	float	lambdaFirst,
		float	lambdaStep,
		const std::vector< float > &	qe
	)

Set QE curve.

Parameters

lambdaFirst	curve starting wavelength in nm
lambdaStep	step between points
qe	vector of QE values

Definition at line 32 of file ARICHSimulationPar.cc.

{
  m_lambdaFirst = lambdaFirst;
  m_lambdaStep = lambdaStep;
  m_qe = qe;
}

◆ setQEScaling()

void setQEScaling ( double qescale )

inline

Set QE scaling factor for photons internally reflected in HAPD window.

Parameters

qescale QE scaling

Definition at line 82 of file ARICHSimulationPar.h.

82{ m_qeScale = (float)qescale;}

◆ setWindowAbsorbtion()

void setWindowAbsorbtion ( double abs )

inline

Set absorbtion probability for photons internally reflected in HAPD window.

Parameters

abs	absorbtion probability

Definition at line 88 of file ARICHSimulationPar.h.

88{ m_windowAbsorbtion = (float)abs;}

Member Data Documentation

◆ m_chipNegativeCrosstalk

float m_chipNegativeCrosstalk = 0

private

to simulate opposite polarity crosstalk among channels on chip

Definition at line 117 of file ARICHSimulationPar.h.

◆ m_colEff

float m_colEff = 0

private

collection efficiency

Definition at line 121 of file ARICHSimulationPar.h.

◆ m_lambdaFirst

float m_lambdaFirst = 0

private

wavelength [nm]: first QE data point

Definition at line 122 of file ARICHSimulationPar.h.

◆ m_lambdaStep

float m_lambdaStep = 0

private

wavelength [nm]: step

Definition at line 123 of file ARICHSimulationPar.h.

◆ m_nBkgHits

float m_nBkgHits = 0

private

number if flat background hits/hapd/event to be added in digitizer

Definition at line 124 of file ARICHSimulationPar.h.

◆ m_peakQE

float m_peakQE = 0

private

maximal peak QE of all HAPDs

Definition at line 118 of file ARICHSimulationPar.h.

◆ m_qe

std::vector<float> m_qe

private

quantum efficiency curve

Definition at line 120 of file ARICHSimulationPar.h.

◆ m_qeScale

float m_qeScale = 0

private

QE scale factor for photons internally reflected in HAPD window.

Definition at line 115 of file ARICHSimulationPar.h.

◆ m_windowAbsorbtion

float m_windowAbsorbtion = 0

private

absorbtion probability for photons internally reflected in HAPD window

Definition at line 116 of file ARICHSimulationPar.h.

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

arich/dbobjects/include/ARICHSimulationPar.h
arich/dbobjects/src/ARICHSimulationPar.cc

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ARICHSimulationPar()

Member Function Documentation

◆ getChipNegativeCrosstalk()

◆ getColEff()

◆ getNBkgHits()

◆ getQE()

◆ getQEScaling()

◆ getWindowAbsorbtion()

◆ print()

◆ setChipNegativeCrosstalk()

◆ setCollectionEff()

◆ setNBkgHits()

◆ setPeakQE()

◆ setQECurve()

◆ setQEScaling()

◆ setWindowAbsorbtion()

Member Data Documentation

◆ m_chipNegativeCrosstalk

◆ m_colEff

◆ m_lambdaFirst

◆ m_lambdaStep

◆ m_nBkgHits

◆ m_peakQE

◆ m_qe

◆ m_qeScale

◆ m_windowAbsorbtion