HcalTimeSlewSim Class Reference

#include <HcalTimeSlewSim.h>

Public Member Functions
void	delay (CaloSamples &samples, CLHEP::HepRandomEngine *) const
	HcalTimeSlewSim (const CaloVSimParameterMap *parameterMap)

Private Member Functions
double	charge (const CaloSamples &samples) const

Private Attributes
const CaloVSimParameterMap *	theParameterMap

Detailed Description

Definition at line 18 of file HcalTimeSlewSim.h.

Constructor & Destructor Documentation

HcalTimeSlewSim::HcalTimeSlewSim

(

const CaloVSimParameterMap *

parameterMap

)

Definition at line 13 of file HcalTimeSlewSim.cc.

  : theParameterMap(parameterMap)
{
}

Member Function Documentation

double HcalTimeSlewSim::charge ( const CaloSamples &  samples ) const

private

Definition at line 20 of file HcalTimeSlewSim.cc.

References newFWLiteAna::bin, i, CaloSamples::presamples(), and CaloSamples::size().

{
  double totalCharge = 0.;
  for(int i = 0; i < 4; ++i) {
    int bin = i + samples.presamples();
    if(bin < samples.size()) {
      totalCharge += samples[bin];
    }
  }
  return totalCharge;
}

void HcalTimeSlewSim::delay	(	CaloSamples &	samples,
		CLHEP::HepRandomEngine *	engine
	)		const

Definition at line 33 of file HcalTimeSlewSim.cc.

References DetId::Calo, data, HcalTimeSlew::delay(), HcalSimParameters::doTimeSmear(), f, HcalBarrel, HcalEndcap, HcalOuter, i, CaloSamples::id(), LogDebug, HcalTimeSlew::Medium, plotscripts::rms(), pileupReCalc_HLTpaths::scale, CaloVSimParameterMap::simParameters(), CaloSamples::size(), HcalTimeSlew::Slow, HcalDetId::subdet(), HcalZDCDetId::SubdetectorId, edmStreamStallGrapher::t, theParameterMap, and HcalSimParameters::timeSmearRMS().

Referenced by HcalAmplifier::amplify().

{
  // HO goes slow, HF shouldn't be used at all
  //ZDC not used for the moment

  DetId detId(samples.id());
  if(detId.det()==DetId::Calo && detId.subdetId()==HcalZDCDetId::SubdetectorId) return;
  HcalDetId hcalDetId(detId);

  if(hcalDetId.subdet() == HcalBarrel || hcalDetId.subdet() == HcalEndcap || hcalDetId.subdet() == HcalOuter ) {

    HcalTimeSlew::BiasSetting biasSetting = (hcalDetId.subdet() == HcalOuter) ?
      HcalTimeSlew::Slow :
      HcalTimeSlew::Medium;

    // double totalCharge = charge(samples); 

    int maxbin =  samples.size();
    CaloSamples data(detId, maxbin);   // for a temporary copy 
    data =  samples;  

    // smearing
    double eps = 1.e-6;
    double scale_factor = 0.6;  
    double scale = data[4] / scale_factor;      
    double smearns = 0.;

    const HcalSimParameters& params =
      static_cast<const HcalSimParameters&>(theParameterMap->simParameters(detId));
    if (params.doTimeSmear()) {
      double rms = params.timeSmearRMS(scale);
      smearns = CLHEP::RandGaussQ::shoot(engine)*rms;
      LogDebug("HcalTimeSlewSim") << "TimeSmear charge " 
                  << scale << " rms " << rms 
                  << " smearns " << smearns;
    }
    
    for(int i = 0; i < samples.size()-1; ++i) {
      double totalCharge = data[i]/scale_factor;   
      // until we get more precise/reliable QIE8 simulation...  

      double delay = smearns;
      if(totalCharge <= 0.) totalCharge = eps; // protecion against negaive v.
      delay += HcalTimeSlew::delay(totalCharge, biasSetting);      
      if(delay <= 0.) delay = eps;

      double t = i*25. - delay;
      int firstbin = floor(t/25.);
      double f = t/25. - firstbin;
      int nextbin = firstbin + 1;
      double v2 = (nextbin < 0  || nextbin  >= maxbin) ? 0. : data[nextbin];
      data[i] = v2*f;
      data[i+1] = data[i+1] + (v2 - data[i]);
    }

    samples = data;
  }
}

Member Data Documentation

const CaloVSimParameterMap* HcalTimeSlewSim::theParameterMap

private

Definition at line 28 of file HcalTimeSlewSim.h.

Referenced by delay().