CSCDbStripConditions Class Reference

#include <CSCDbStripConditions.h>

Inheritance diagram for CSCDbStripConditions:

Public Member Functions
virtual void	crosstalk (const CSCDetId &detId, int channel, double stripLength, bool leftRight, float &capacitive, float &resistive) const
	CSCDbStripConditions (const edm::ParameterSet &pset)
virtual float	gain (const CSCDetId &detId, int channel) const
	channels count from 1 More...
virtual float	gainSigma (const CSCDetId &detId, int channel) const
	total calibration precision More...
virtual void	initializeEvent (const edm::EventSetup &es)
	fetch the maps from the database More...
virtual bool	isInBadChamber (const CSCDetId &id) const
	check list of bad chambers from db More...
virtual float	pedestal (const CSCDetId &detId, int channel) const
	in ADC counts More...
virtual float	pedestalSigma (const CSCDetId &detId, int channel) const
virtual	~CSCDbStripConditions ()
Public Member Functions inherited from CSCStripConditions
float	analogNoise (const CSCDetId &detId, int channel) const
	calculated from pedestalSigma & gain More...
	CSCStripConditions ()
void	noisify (const CSCDetId &detId, CSCAnalogSignal &signal)
	superimposes noise, in fC, on the signal More...
void	setRandomEngine (CLHEP::HepRandomEngine &engine)
virtual float	smearedGain (const CSCDetId &detId, int channel) const
virtual	~CSCStripConditions ()

Private Member Functions
virtual void	fetchNoisifier (const CSCDetId &detId, int istrip)

Private Attributes
bool	doCorrelatedNoise_
float	theCapacitiveCrosstalk
CSCConditions	theConditions
float	theGainsConstant
float	theResistiveCrosstalkScaling

Additional Inherited Members
Public Types inherited from CSCStripConditions
typedef math::ErrorD< 8 >::type	CSCCorrelatedNoiseMatrix
typedef CorrelatedNoisifier < CSCCorrelatedNoiseMatrix >	CSCCorrelatedNoisifier
Protected Attributes inherited from CSCStripConditions
CSCCorrelatedNoisifier *	theNoisifier
CLHEP::RandGaussQ *	theRandGaussQ

Detailed Description

Definition at line 8 of file CSCDbStripConditions.h.

Constructor & Destructor Documentation

CSCDbStripConditions::CSCDbStripConditions ( const edm::ParameterSet &  pset )

explicit

Definition at line 12 of file CSCDbStripConditions.cc.

: CSCStripConditions(),
  theConditions( pset ),
  theCapacitiveCrosstalk(pset.getParameter<double>("capacativeCrosstalk")),
  theResistiveCrosstalkScaling(pset.getParameter<double>("resistiveCrosstalkScaling")),
  theGainsConstant(pset.getParameter<double>("gainsConstant")),
  doCorrelatedNoise_(pset.getParameter<bool>("doCorrelatedNoise"))
{
//  theCapacitiveCrosstalk = = 1/maxslope/maxsignal) = 1/ (0.00231/0.143);
// Howoever, need a bit more.  Maybe the slope gets smeared?
}

CSCDbStripConditions::~CSCDbStripConditions ( )

virtual

Definition at line 25 of file CSCDbStripConditions.cc.

References CSCStripConditions::theNoisifier.

{
  if(theNoisifier != 0) delete theNoisifier;
}

Member Function Documentation

void CSCDbStripConditions::crosstalk ( const CSCDetId &  detId, int  channel, double  stripLength, bool  leftRight, float &  capacitive, float &  resistive  ) const

virtual

Implements CSCStripConditions.

Definition at line 55 of file CSCDbStripConditions.cc.

References CSCConditions::crosstalkIntercept(), CSCConditions::crosstalkSlope(), slope, theCapacitiveCrosstalk, theConditions, and theResistiveCrosstalkScaling.

{
  resistive = theConditions.crosstalkIntercept(id, channel, leftRight)
             * theResistiveCrosstalkScaling;
  float slope = theConditions.crosstalkSlope(id, channel, leftRight);
  // ns before the peak where slope is max
  float maxSlopeTime = 60.;
  // some confusion about +/-
  float capacitiveFraction = fabs(slope)*maxSlopeTime;
  // theCapacitiveCrosstalk is the number needed for 100% xtalk, so
  capacitive = theCapacitiveCrosstalk * capacitiveFraction;
}

void CSCDbStripConditions::fetchNoisifier ( const CSCDetId &  detId, int  istrip  )

privatevirtual

Implements CSCStripConditions.

Definition at line 71 of file CSCDbStripConditions.cc.

References doCorrelatedNoise_, makeMuonMisalignmentScenario::matrix, CSCConditions::noiseMatrixElements(), pedestalSigma(), theConditions, and CSCStripConditions::theNoisifier.

{
  std::vector<float> me(12); // buffer for matrix elements
  theConditions.noiseMatrixElements( id, istrip, me ); // fill it

  CSCCorrelatedNoiseMatrix matrix;
  //TODO get the pedestals right
  matrix(2,2) = me[0]; // item.elem33;
  matrix(3,3) = me[3]; // item.elem44;
  matrix(4,4) = me[6]; // item.elem55;
  matrix(5,5) = me[9]; // item.elem66;
  matrix(6,6) = me[11]; // item.elem77;

  if(doCorrelatedNoise_)
  {
    matrix(2,3) = me[1]; // item.elem34;
    matrix(2,4) = me[2]; // item.elem35;
    matrix(3,4) = me[4]; // item.elem45;
    matrix(3,5) = me[5]; // item.elem46;
    matrix(4,5) = me[7]; // item.elem56;
    matrix(4,6) = me[8]; // item.elem57;
    matrix(5,6) = me[10]; // item.elem67;
  }

  // the other diagonal elements can just come from the pedestal sigma
  float sigma = pedestalSigma(id, istrip);
  //@@  float scaVariance = 2 * sigma * sigma;
  //@@ The '2 *' IS strictly correct, but currently the value in the cond db is 2x too large since
  //@@ it is the rms of the distribution of pedestals of all 8 time samples rather than the rms of
  //@@ the average of the first two time samples
  float scaVariance = sigma * sigma;
  matrix(0,0) = matrix(1,1) = matrix(7,7) = scaVariance;

  // unknown neighbors can be the average of the known neighbors
  //float avgNeighbor = (matrix(2,3)+matrix(3,4)+matrix(4,5)+matrix(5,6))/4.;
  //float avg2away = (matrix(2,4)+matrix(3,5)+matrix(4,6))/3.;
  //matrix(0,1) = matrix(1,2) = matrix(6,7) = avgNeighbor;
  //matrix(0,2) = matrix(1,3) = matrix(5,7) = avg2away;

  if(theNoisifier != 0) delete theNoisifier;
  theNoisifier = new CSCCorrelatedNoisifier(matrix);
}

float CSCDbStripConditions::gain ( const CSCDetId &  detId, int  channel  ) const

virtual

channels count from 1

Implements CSCStripConditions.

Definition at line 37 of file CSCDbStripConditions.cc.

References CSCConditions::gain(), theConditions, and theGainsConstant.

{
  return theConditions.gain(id, channel)  * theGainsConstant;
}

virtual float CSCDbStripConditions::gainSigma ( const CSCDetId &  detId, int  channel  ) const

inlinevirtual

total calibration precision

Implements CSCStripConditions.

Definition at line 20 of file CSCDbStripConditions.h.

{return 0.005;}

void CSCDbStripConditions::initializeEvent ( const edm::EventSetup &  es )

virtual

fetch the maps from the database

Reimplemented from CSCStripConditions.

Definition at line 31 of file CSCDbStripConditions.cc.

References CSCConditions::initializeEvent(), and theConditions.

{
  theConditions.initializeEvent(es);
}

bool CSCDbStripConditions::isInBadChamber ( const CSCDetId &  id ) const

virtual

check list of bad chambers from db

Reimplemented from CSCStripConditions.

Definition at line 114 of file CSCDbStripConditions.cc.

References CSCConditions::isInBadChamber(), and theConditions.

{
  return theConditions.isInBadChamber( id );
}

float CSCDbStripConditions::pedestal ( const CSCDetId &  detId, int  channel  ) const

virtual

in ADC counts

Implements CSCStripConditions.

Definition at line 43 of file CSCDbStripConditions.cc.

References CSCConditions::pedestal(), and theConditions.

{
  return theConditions.pedestal(id, channel);
}

float CSCDbStripConditions::pedestalSigma ( const CSCDetId &  detId, int  channel  ) const

virtual

Implements CSCStripConditions.

Definition at line 49 of file CSCDbStripConditions.cc.

References CSCConditions::pedestalSigma(), and theConditions.

Referenced by fetchNoisifier().

{
  return theConditions.pedestalSigma(id, channel);
}

Member Data Documentation

bool CSCDbStripConditions::doCorrelatedNoise_

private

Definition at line 45 of file CSCDbStripConditions.h.

Referenced by fetchNoisifier().

float CSCDbStripConditions::theCapacitiveCrosstalk

private

Definition at line 39 of file CSCDbStripConditions.h.

Referenced by crosstalk().

CSCConditions CSCDbStripConditions::theConditions

private

Definition at line 36 of file CSCDbStripConditions.h.

Referenced by crosstalk(), fetchNoisifier(), gain(), initializeEvent(), isInBadChamber(), pedestal(), and pedestalSigma().

float CSCDbStripConditions::theGainsConstant

private

Definition at line 44 of file CSCDbStripConditions.h.

Referenced by gain().

float CSCDbStripConditions::theResistiveCrosstalkScaling

private

Definition at line 42 of file CSCDbStripConditions.h.

Referenced by crosstalk().