FP420DigiMain.cc

Go to the documentation of this file.

// File: FP420DigiMain.cc
// Date: 12.2006
// Description: FP420DigiMain for FP420
// Modifications: 
#include "SimDataFormats/TrackingHit/interface/PSimHit.h"
#include "SimDataFormats/TrackingHit/interface/PSimHitContainer.h"
#include "SimRomanPot/SimFP420/interface/FP420DigiMain.h"

#include "SimRomanPot/SimFP420/interface/ChargeDrifterFP420.h"
#include "SimRomanPot/SimFP420/interface/ChargeDividerFP420.h"

#include "DataFormats/FP420Digi/interface/HDigiFP420.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include <gsl/gsl_sf_erf.h>
#include "CLHEP/Random/RandGauss.h"
#include "CLHEP/Random/RandFlat.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include <vector>
#include <iostream>
using namespace std;

//#define CBOLTZ (1.38E-23)
//#define e_SI (1.6E-19)

FP420DigiMain::FP420DigiMain(const edm::ParameterSet& conf):conf_(conf){
  edm::LogInfo("SimRomanPotSimFP420") << "Creating a FP420DigiMain";
  ndigis=0;
  verbosity        = conf_.getUntrackedParameter<int>("VerbosityLevel");
  theElectronPerADC= conf_.getParameter<double>("ElectronFP420PerAdc");
  theThreshold     = conf_.getParameter<double>("AdcFP420Threshold");
  noNoise          = conf_.getParameter<bool>("NoFP420Noise");
  addNoisyPixels   = conf_.getParameter<bool>("AddNoisyPixels");
  thez420          = conf_.getParameter<double>("z420");
  thezD2           = conf_.getParameter<double>("zD2");
  thezD3           = conf_.getParameter<double>("zD3");
  theApplyTofCut   = conf_.getParameter<bool>("ApplyTofCut");
  tofCut           = conf_.getParameter<double>("LowtofCutAndTo200ns");
  //  sn0              = 3;// number of stations
  // pn0              = 6;// number of superplanes
  // rn0              = 3; // number of sensors in superlayer
  xytype           = 2;

  edm::LogInfo("SimRomanPotSimFP420") 
    << "theApplyTofCut=" << theApplyTofCut << " tofCut=" << tofCut << "\n"
    << "FP420DigiMain theElectronPerADC=" << theElectronPerADC << " theThreshold=" << theThreshold << " noNoise=" << noNoise;

  // X (or Y)define type of sensor (xytype=1 or 2 used to derive it: 1-Y, 2-X)
  // for every type there is normal pixel size=0.05 and Wide 0.400 mm
  Thick300 = 0.300;       // = 0.300 mm  normalized to 300micron Silicon
  //ENC= 2160.;             //          EquivalentNoiseCharge300um = 2160. + other sources of noise
  ENC= 960.;             //          EquivalentNoiseCharge300um = 2160. + other sources of noise
  
  ldriftX = 0.050;        // in mm(xytype=1)
  ldriftY = 0.050;        // in mm(xytype=2)
  moduleThickness = 0.250; // mm(xytype=1)(xytype=2)
  
  pitchY= 0.050;          // in mm(xytype=1)
  pitchX= 0.050;          // in mm(xytype=2)
  //numStripsY = 200;        // Y plate number of strips:200*0.050=10mm (xytype=1)
  //numStripsX = 400;        // X plate number of strips:400*0.050=20mm (xytype=2)
  numStripsY = 144;        // Y plate number of strips:144*0.050=7.2mm (xytype=1)
  numStripsX = 160;        // X plate number of strips:160*0.050=8.0mm (xytype=2)
  
  pitchYW= 0.400;          // in mm(xytype=1)
  pitchXW= 0.400;          // in mm(xytype=2)
  //numStripsYW = 50;        // Y plate number of W strips:50 *0.400=20mm (xytype=1) - W have ortogonal projection
  //numStripsXW = 25;        // X plate number of W strips:25 *0.400=10mm (xytype=2) - W have ortogonal projection
  numStripsYW = 20;        // Y plate number of W strips:20 *0.400=8.0mm (xytype=1) - W have ortogonal projection
  numStripsXW = 18;        // X plate number of W strips:18 *0.400=7.2mm (xytype=2) - W have ortogonal projection
  
  //  tofCut = 1350.;           // Cut on the particle TOF range  = 1380 - 1500
  elossCut = 0.00003;           // Cut on the particle TOF   = 100 or 50
  
  edm::LogInfo("SimRomanPotSimFP420") << "FP420DigiMain moduleThickness=" << moduleThickness;
  
  float noiseRMS = ENC*moduleThickness/Thick300;

  // Y:
  if (xytype ==1) {
    numStrips = numStripsY;  // Y plate number of strips:200*0.050=10mm --> 100*0.100=10mm
    pitch= pitchY;
    ldrift = ldriftX; // because drift is in local coordinates which 90 degree rotated ( for correct timeNormalization & noiseRMS calculations)
    numStripsW = numStripsYW;  // Y plate number of strips:200*0.050=10mm --> 100*0.100=10mm
    pitchW= pitchYW;
  }
  // X:
  if (xytype ==2) {
    numStrips = numStripsX;  // X plate number of strips:400*0.050=20mm --> 200*0.100=20mm
    pitch= pitchX;
    ldrift = ldriftY; // because drift is in local coordinates which 90 degree rotated ( for correct timeNormalization & noiseRMS calculations)
    numStripsW = numStripsXW;  // X plate number of strips:400*0.050=20mm --> 200*0.100=20mm
    pitchW= pitchXW;
  }
  
  theHitDigitizerFP420 = new HitDigitizerFP420(moduleThickness,ldrift,ldriftY,ldriftX,thez420,thezD2,thezD3,verbosity);
  int numPixels = numStrips*numStripsW;
  theGNoiseFP420 = new GaussNoiseFP420(numPixels,noiseRMS,theThreshold,addNoisyPixels,verbosity);
  theZSuppressFP420 = new ZeroSuppressFP420(conf_,noiseRMS/theElectronPerADC); 
  thePileUpFP420 = new PileUpFP420();
  theDConverterFP420 = new DigiConverterFP420(theElectronPerADC,verbosity);
  
  edm::LogInfo("SimRomanPotSimFP420") << "FP420DigiMain end of constructor";
}

FP420DigiMain::~FP420DigiMain(){
  delete theGNoiseFP420;
  delete theZSuppressFP420;
  delete theHitDigitizerFP420;
  delete thePileUpFP420;
  delete theDConverterFP420;  
}

//  Run the algorithm
//  ------------------

vector <HDigiFP420> FP420DigiMain::run(const std::vector<PSimHit> &input,
                       const G4ThreeVector& bfield, unsigned int iu )  {

  thePileUpFP420->reset();
  bool first = true;
  
  // main loop 
  //
  // First: loop on the SimHits
  //
  std::vector<PSimHit>::const_iterator simHitIter = input.begin();
  std::vector<PSimHit>::const_iterator simHitIterEnd = input.end();
  for (;simHitIter != simHitIterEnd; ++simHitIter) {
    
    const PSimHit ihit = *simHitIter;

    if ( first ) {
      //       detID = ihit.detUnitId();
      first = false;
    }

    // main part here:
    double  losenergy = ihit.energyLoss();
    float   tof = ihit.tof();

    if(verbosity>1) {
      unsigned int unitID = ihit.detUnitId();
      std::cout << " *******FP420DigiMain:                           intindex= " << iu << std::endl;
      std::cout << " tof= " << tof << "  EnergyLoss= " << losenergy  << "  pabs= " <<  ihit.pabs() << std::endl;
      std::cout << " EntryLocalP x= " << ihit.entryPoint().x() << " EntryLocalP y= " << ihit.entryPoint().y() << std::endl;
      std::cout << " ExitLocalP x= " << ihit.exitPoint().x() << " ExitLocalP y= " << ihit.exitPoint().y() << std::endl;
      std::cout << " EntryLocalP z= " << ihit.entryPoint().z() << " ExitLocalP z= " << ihit.exitPoint().z() << std::endl;
      std::cout << " unitID= " << unitID << "  xytype= " << xytype << " particleType= " << ihit.particleType() << " trackId= " << ihit.trackId() << std::endl;
      //    std::cout << " det= " << det << " sector= " << sector << "  zmodule= " << zmodule << std::endl;
      std::cout << "  bfield= " << bfield << std::endl;
    }
  if(verbosity>0) {
      std::cout << " *******FP420DigiMain:                           theApplyTofCut= " << theApplyTofCut << std::endl;
      std::cout << " tof= " << tof << "  EnergyLoss= " << losenergy  << "  pabs= " <<  ihit.pabs() << std::endl;
      std::cout << " particleType= " << ihit.particleType() << std::endl;
  }

    if ( ( !(theApplyTofCut)  ||  ( theApplyTofCut &&   abs(tof) > tofCut && abs(tof) < (tofCut+200.)) ) && losenergy > elossCut) {
      if(verbosity>0) std::cout << " inside tof: OK " << std::endl;
      
      HitDigitizerFP420::hit_map_type _temp = theHitDigitizerFP420->processHit(ihit,bfield,xytype,numStrips,pitch,numStripsW,pitchW,moduleThickness,verbosity); 
      
      thePileUpFP420->add(_temp,ihit,verbosity);
      
    }
    // main part end (AZ) 
  } //for
  // main loop end (AZ) 
  
  PileUpFP420::signal_map_type theSignal = thePileUpFP420->dumpSignal();
  PileUpFP420::HitToDigisMapType theLink = thePileUpFP420->dumpLink();  
  
  
  PileUpFP420::signal_map_type afterNoise;
  
  if (noNoise) {
    afterNoise = theSignal;
  } else {
    afterNoise = theGNoiseFP420->addNoise(theSignal);
    //    add_noise();
  }
  digis.clear();
  
  push_digis(theZSuppressFP420->zeroSuppress(theDConverterFP420->convert(afterNoise),verbosity),
         theLink,afterNoise);
  
  return digis; // to HDigiFP420
}

void FP420DigiMain::push_digis(const DigitalMapType& dm,
                   const HitToDigisMapType& htd,
                   const PileUpFP420::signal_map_type& afterNoise
                   )        {
  //  
  if(verbosity>0) {
    std::cout << " ****FP420DigiMain: push_digis start: do for loop dm.size()=" <<  dm.size() << std::endl;
  }
  
  digis.reserve(50); 
  digis.clear();
  //   link_coll.clear();
  for ( DigitalMapType::const_iterator i=dm.begin(); i!=dm.end(); i++) {
    
    // Load digis
    // push to digis the content of first and second words of HDigiFP420 vector for every strip pointer (*i)
    digis.push_back( HDigiFP420( (*i).first, (*i).second));
    ndigis++; 
    // very useful check:
    if(verbosity>0) {
      std::cout << " ****FP420DigiMain:push_digis:  ndigis = " << ndigis << std::endl;
      std::cout << "push_digis: strip  = " << (*i).first << "  adc = " << (*i).second << std::endl;
    }    
    
  }
    
    
    // reworked to access the fraction of amplitude per simhit
    
    for ( HitToDigisMapType::const_iterator mi=htd.begin(); mi!=htd.end(); mi++) {
      //      
      if (dm.find((*mi).first) != dm.end() ){
    // --- For each channel, sum up the signals from a simtrack
    //
    map<const PSimHit *, Amplitude> totalAmplitudePerSimHit;
    for (std::vector < std::pair < const PSimHit*, Amplitude > >::const_iterator simul =
           (*mi).second.begin() ; simul != (*mi).second.end(); simul ++){
      totalAmplitudePerSimHit[(*simul).first] += (*simul).second;
    }
    /*  
    //--- include the noise as well
    
    PileUpFP420::signal_map_type& temp1 = const_cast<PileUpFP420::signal_map_type&>(afterNoise);
    float totalAmplitude1 = temp1[(*mi).first];
    
    //--- digisimlink
    for (std::map<const PSimHit *, Amplitude>::const_iterator iter = totalAmplitudePerSimHit.begin();
    iter != totalAmplitudePerSimHit.end(); iter++){
    
    float threshold = 0.;
    if (totalAmplitudePerSimHit[(*iter).first]/totalAmplitude1 >= threshold) {
    float fraction = totalAmplitudePerSimHit[(*iter).first]/totalAmplitude1;
    
    //Noise fluctuation could make fraction>1. Unphysical, set it by hand.
    if(fraction >1.) fraction = 1.;
    
    link_coll.push_back(StripDigiSimLink( (*mi).first,   //channel
    ((*iter).first)->trackId(), //simhit
    fraction));    //fraction
    }//if
    }//for
    */
    //
      }//if
    }//for
}