CSCCrosstalkGenerator Class Reference

#include <CSCCrosstalkGenerator.h>

Public Member Functions
	CSCCrosstalkGenerator ()
CSCAnalogSignal	getCrosstalk (const CSCAnalogSignal &inputSignal) const
float	ratio (const CSCAnalogSignal &crosstalkSignal, const CSCAnalogSignal &signal) const
	analyzes the ratio between two signals. More...
void	setParameters (float crosstalk, float delay, float resistiveFraction)

Private Attributes
float	theCrosstalk
float	theDelay
float	theResistiveFraction

Detailed Description

Cross-talk generator for digitization simulation of Endcap Muon CSCs. We model crosstalk by making the signal on a neighboring strip or wire proportional to the slope of the original signal. The constant should be chosen to give the appropriate level of crosstalk, maybe 10% of the signal. The user is responsible for subtracting the crosstalk from the input signal, and adding the crosstalk signal to the neighbors.

Author

Rick Wilkinson,

Definition at line 19 of file CSCCrosstalkGenerator.h.

Constructor & Destructor Documentation

CSCCrosstalkGenerator::CSCCrosstalkGenerator ( )

inline

Definition at line 22 of file CSCCrosstalkGenerator.h.

                          : theCrosstalk(0), theDelay(0),
                              theResistiveFraction(0.) {};

Member Function Documentation

CSCAnalogSignal CSCCrosstalkGenerator::getCrosstalk

(

const CSCAnalogSignal &

inputSignal

)

const

Definition at line 4 of file CSCCrosstalkGenerator.cc.

References CSCAnalogSignal::getBinSize(), CSCAnalogSignal::getSize(), CSCAnalogSignal::getTimeOffset(), CSCAnalogSignal::getValue(), slope, theCrosstalk, theDelay, and theResistiveFraction.

Referenced by CSCStripElectronicsSim::addCrosstalk().

                                                                                             {
  int nBins = inputSignal.getSize();
  float binSize = inputSignal.getBinSize();
  std::vector<float> binValues(nBins);
  
  for(int outputBin = 0; outputBin < nBins; ++outputBin) {
    float aTime = outputBin*binSize - theDelay;
    float slope = inputSignal.getValue(aTime) - inputSignal.getValue(aTime-1.);
    binValues[outputBin] = slope * theCrosstalk 
                         + theResistiveFraction * inputSignal.getValue(aTime);
  }

  return CSCAnalogSignal(0, binSize, binValues, 0., inputSignal.getTimeOffset());
}

float CSCCrosstalkGenerator::ratio	(	const CSCAnalogSignal &	crosstalkSignal,
		const CSCAnalogSignal &	signal
	)		const

analyzes the ratio between two signals.

Definition at line 20 of file CSCCrosstalkGenerator.cc.

References CSCAnalogSignal::getBinValue(), CSCAnalogSignal::getSize(), i, and hlt_dqm_clientPB-live_cfg::nbins.

{

  float maxFirst = 0., maxSecond = 0.;
  int nbins = signal.getSize();
  for(int i = 1; i < nbins; ++i)
  {
    float v1 = signal.getBinValue(i);
    float v2 = crosstalkSignal.getBinValue(i);

    if(v1 > maxFirst) maxFirst = v1;
    if(v2 > maxSecond) maxSecond = v2;

  }

  return maxSecond/maxFirst;
}

void CSCCrosstalkGenerator::setParameters ( float  crosstalk, float  delay, float  resistiveFraction  )

inline

Definition at line 25 of file CSCCrosstalkGenerator.h.

References theCrosstalk, theDelay, and theResistiveFraction.

Referenced by CSCStripElectronicsSim::addCrosstalk().

                                                                            {
    theCrosstalk = crosstalk;
    theDelay     = delay;
    theResistiveFraction = resistiveFraction;
  }

Member Data Documentation

float CSCCrosstalkGenerator::theCrosstalk

private

Definition at line 37 of file CSCCrosstalkGenerator.h.

Referenced by getCrosstalk(), and setParameters().

float CSCCrosstalkGenerator::theDelay

private

Definition at line 38 of file CSCCrosstalkGenerator.h.

Referenced by getCrosstalk(), and setParameters().

float CSCCrosstalkGenerator::theResistiveFraction

private

Definition at line 40 of file CSCCrosstalkGenerator.h.

Referenced by getCrosstalk(), and setParameters().