CDCDedx1DCell Class Reference

dE/dx wire gain calibration constants More...

#include <CDCDedx1DCell.h>

Inheritance diagram for CDCDedx1DCell:

Collaboration diagram for CDCDedx1DCell:

Public Member Functions
	CDCDedx1DCell ()
	Default constructor.
	CDCDedx1DCell (short version, const std::vector< std::vector< double >> &onedgains)
	Constructor.
	~CDCDedx1DCell ()
	Destructor.
CDCDedx1DCell &	operator*= (CDCDedx1DCell const &rhs)
	Combine payloads.
short	getVersion () const
	Get the version for the 1D cleanup.
unsigned int	getSize () const
	Get the number of bins for the entrance angle correction.
unsigned int	getNBins (unsigned int layer) const
	Get the number of bins for the entrance angle correction.
double	getMean (unsigned int layer, unsigned int bin) const
	Return dE/dx mean value for the given bin. More...
void	setMean (unsigned int layer, unsigned int bin, double value)
	Reset dE/dx mean value for the given bin. More...
double	getMean (unsigned int layer, double enta) const
	Return dE/dx mean value for given entrance angle. More...

Private Member Functions
	ClassDef (CDCDedx1DCell, 5)
	ClassDef.

Private Attributes
short	m_version
	dE/dx cleanup correction versus entrance angle may be different for different layers, so store as a vector of vectors keep a version number to identify which layers are valid More...
std::vector< std::vector< double > >	m_onedgains
	dE/dx means in entrance angle bins

Detailed Description

dE/dx wire gain calibration constants

Definition at line 27 of file CDCDedx1DCell.h.

Member Function Documentation

getMean() [1/2]

double getMean ( unsigned int  layer, double  enta  ) const

inline

Return dE/dx mean value for given entrance angle.

Parameters

layer	continuous layer number
enta	entrance angle (-pi/2 to pi/2)

Definition at line 134 of file CDCDedx1DCell.h.

    {
      if (layer > 56) {
        B2ERROR("No such layer!");
        return 0;
      }
 
      int mylayer = 0;
      if (layer >= 8 && m_onedgains.size() == 2) mylayer = 1;
      else if (m_onedgains.size() == 56) mylayer = layer;
 
      double piby2 =  TMath::Pi() / 2.0;
      // assume rotational symmetry
      if (enta < -piby2) enta += piby2;
      if (enta > piby2) enta -= piby2;
 
      double binsize = (m_onedgains[mylayer].size() != 0) ? 2.0 * piby2 / m_onedgains[mylayer].size() : 0.0;
      int bin = (binsize != 0.0) ? std::floor((enta + piby2) / binsize) : -1;
      if (bin < 0 || (unsigned)bin >= m_onedgains[mylayer].size()) {
        B2WARNING("Problem with CDC dE/dx 1D binning!");
        return 1.0;
      }
 
      return m_onedgains[mylayer][bin];
    };

getMean() [2/2]

double getMean ( unsigned int  layer, unsigned int  bin  ) const

inline

Return dE/dx mean value for the given bin.

Parameters

layer	is layer number between 0-55
bin	is enta bin number

Definition at line 104 of file CDCDedx1DCell.h.

setMean()

void setMean ( unsigned int  layer, unsigned int  bin, double  value  )

inline

Reset dE/dx mean value for the given bin.

Parameters

layer	is layer number between 0-55
bin	is enta bin number
value	is constant for requested entabin and layer

Definition at line 120 of file CDCDedx1DCell.h.

Member Data Documentation

m_version

short m_version

private

dE/dx cleanup correction versus entrance angle may be different for different layers, so store as a vector of vectors keep a version number to identify which layers are valid

version number for 1D cleanup correction

Definition at line 164 of file CDCDedx1DCell.h.

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

• reconstruction/dbobjects/include/CDCDedx1DCell.h