CDCAlphaScaleFactorForAsymmetry Class Reference

Database object for scale factors on alpha for CDC hit charge asymmetry. More...

#include <CDCAlphaScaleFactorForAsymmetry.h>

Inheritance diagram for CDCAlphaScaleFactorForAsymmetry:

Public Types
enum	{   c_nLayers = 56 ,   c_nAlphaBins = 150 }
	Constants. More...

Public Member Functions
	CDCAlphaScaleFactorForAsymmetry ()
	Default constructor.
void	setScaleFactors (const std::array< std::array< float, c_nAlphaBins >, c_nLayers > &inputScales)
	Set the factors in the list.
unsigned short	getEntries () const
	Get the no.
std::array< std::array< float, c_nAlphaBins >, c_nLayers >	getScaleFactors () const
	Get the whole list.
std::array< float, c_nAlphaBins >	getScaleFactors (unsigned short iCLayer) const
	Get the factors for the iCLayer.
double	getScaleFactor (unsigned short iCLayer, double alpha) const
	Get the factor for one hit.
void	dump () const
	Print all contents.

Private Member Functions
	ClassDef (CDCAlphaScaleFactorForAsymmetry, 1)
	ClassDef.

Private Attributes
std::array< std::array< float, c_nAlphaBins >, c_nLayers >	m_Scales
	scale factors
double	c_AlphaBinWidth = 0.01
	bin width on alpha

Detailed Description

Database object for scale factors on alpha for CDC hit charge asymmetry.

Needed only for MC production.

Definition at line 25 of file CDCAlphaScaleFactorForAsymmetry.h.

Member Enumeration Documentation

anonymous enum

anonymous enum

Constants.

Enumerator
c_nLayers	no. of layers
c_nAlphaBins	no. of alpha angle bins per layer

Definition at line 30 of file CDCAlphaScaleFactorForAsymmetry.h.

         {c_nLayers    = 56,  
          c_nAlphaBins = 150, 
         };

Constructor & Destructor Documentation

CDCAlphaScaleFactorForAsymmetry()

CDCAlphaScaleFactorForAsymmetry ( )

inline

Default constructor.

Definition at line 38 of file CDCAlphaScaleFactorForAsymmetry.h.

{}

Member Function Documentation

dump()

void dump ( ) const

inline

Print all contents.

Definition at line 97 of file CDCAlphaScaleFactorForAsymmetry.h.

    {
      std::cout << " " << std::endl;
      std::cout << "Scale factor list" << std::endl;
      std::cout << "#entries= " << c_nLayers* c_nAlphaBins << std::endl;
      std::cout << "the ratio of data to MC for the hit efficiency of positively charged tracks comparing to negitively charged tracks" <<
                std::endl;
 
      for (unsigned short iLayer = 0; iLayer < c_nLayers; iLayer++) {
        std::cout << "Scale factors for Layer " << iLayer << " : " << std::endl;
        for (unsigned short i = 0; i < c_nAlphaBins; ++i) {
          std::cout << " Alpha in ( " << i * 0.01 << " , " << (i + 1) * 0.01 << " ), Scale factor: "  << m_Scales[iLayer][i] << std::endl;
        }
      }
    }

getEntries()

unsigned short getEntries ( ) const

inline

Get the no.

of entries in the list

Definition at line 53 of file CDCAlphaScaleFactorForAsymmetry.h.

    {
      return c_nLayers * c_nAlphaBins ;
    }

getScaleFactor()

double getScaleFactor ( unsigned short iCLayer, double alpha ) const

inline

Get the factor for one hit.

Parameters

iCLayer	layerID
alpha	alpha value

Returns

the scale factor for this hit

Definition at line 84 of file CDCAlphaScaleFactorForAsymmetry.h.

    {
      if (alpha > (M_PI / 2)) alpha = alpha - M_PI;
      if (alpha < -(M_PI / 2)) alpha = alpha + M_PI;
      int alpha_bin = std::trunc(std::abs(alpha) / c_AlphaBinWidth);
      if (alpha_bin > c_nAlphaBins) alpha_bin = c_nAlphaBins - 1 ;
      return m_Scales[iCLayer][alpha_bin];
    }

getScaleFactors() [1/2]

std::array< std::array< float, c_nAlphaBins >, c_nLayers > getScaleFactors ( ) const

inline

Get the whole list.

Definition at line 61 of file CDCAlphaScaleFactorForAsymmetry.h.

    {
      return m_Scales;
    }

getScaleFactors() [2/2]

std::array< float, c_nAlphaBins > getScaleFactors ( unsigned short iCLayer ) const

inline

Get the factors for the iCLayer.

Parameters

iCLayer

layerID

Returns

scale factors for the iCLayer

Definition at line 71 of file CDCAlphaScaleFactorForAsymmetry.h.

    {
      if (iCLayer >= c_nLayers)
        B2FATAL("Required iCLayer is invalid ! Should be 0 to 55 .");
      return m_Scales[iCLayer] ;
    }

setScaleFactors()

void setScaleFactors ( const std::array< std::array< float, c_nAlphaBins >, c_nLayers > & inputScales )

inline

Set the factors in the list.

Parameters

inputScales

factors

Definition at line 45 of file CDCAlphaScaleFactorForAsymmetry.h.

    {
      m_Scales = inputScales;
    }

Member Data Documentation

c_AlphaBinWidth

double c_AlphaBinWidth = 0.01

private

bin width on alpha

Definition at line 115 of file CDCAlphaScaleFactorForAsymmetry.h.

m_Scales

std::array<std::array<float, c_nAlphaBins>, c_nLayers> m_Scales

private

scale factors

Definition at line 114 of file CDCAlphaScaleFactorForAsymmetry.h.

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

• cdc/dbobjects/include/CDCAlphaScaleFactorForAsymmetry.h