CSCCrosstalkGenerator Class Reference

#include <CSCCrosstalkGenerator.h>

List of all members.

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.
void	setParameters (float crosstalk, float delay, float resistiveFraction)
Private Attributes
float	theCrosstalk
float	theDelay
float	theResistiveFraction

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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.

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Constructor & Destructor Documentation

CSCCrosstalkGenerator::CSCCrosstalkGenerator

(

)

[inline]

Definition at line 22 of file CSCCrosstalkGenerator.h.

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

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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 pileupCalc::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;
  }

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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().