RPCSimModelTiming.cc

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#include "Geometry/RPCGeometry/interface/RPCRoll.h"
#include "Geometry/RPCGeometry/interface/RPCRollSpecs.h"
#include "SimMuon/RPCDigitizer/src/RPCSimModelTiming.h"
#include "SimMuon/RPCDigitizer/src/RPCSimSetUp.h"

#include "SimMuon/RPCDigitizer/src/RPCSynchronizer.h"
#include "Geometry/CommonTopologies/interface/RectangularStripTopology.h"
#include "Geometry/CommonTopologies/interface/TrapezoidalStripTopology.h"
#include "Geometry/RPCGeometry/interface/RPCGeomServ.h"

#include <cmath>

#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/EDAnalyzer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Framework/interface/ESHandle.h"

#include "SimDataFormats/TrackingHit/interface/PSimHitContainer.h"
#include "SimDataFormats/TrackingHit/interface/PSimHit.h"
#include "Geometry/RPCGeometry/interface/RPCGeometry.h"
#include "Geometry/Records/interface/MuonGeometryRecord.h"
#include "DataFormats/MuonDetId/interface/RPCDetId.h"
#include "SimMuon/RPCDigitizer/src/RPCSimSetUp.h"

#include <cstring>
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <cstdlib>
#include <utility>
#include <map>

#include "CLHEP/Random/RandFlat.h"
#include "CLHEP/Random/RandPoissonQ.h"
#include "CLHEP/Random/RandGaussQ.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"

RPCSimModelTiming::RPCSimModelTiming(const edm::ParameterSet& config) : RPCSim(config)
{
  aveEff = config.getParameter<double>("averageEfficiency");
  aveCls = config.getParameter<double>("averageClusterSize");
  resRPC = config.getParameter<double>("timeResolution");
  timOff = config.getParameter<double>("timingRPCOffset");
  dtimCs = config.getParameter<double>("deltatimeAdjacentStrip");
  resEle = config.getParameter<double>("timeJitter");
  sspeed = config.getParameter<double>("signalPropagationSpeed");
  lbGate = config.getParameter<double>("linkGateWidth");
  rpcdigiprint = config.getParameter<bool>("printOutDigitizer");
  
  rate=config.getParameter<double>("Rate");
  nbxing=config.getParameter<int>("Nbxing");
  gate=config.getParameter<double>("Gate");
  frate=config.getParameter<double>("Frate");
  do_Y =  config.getParameter<bool>("do_Y_coordinate");
  sigmaY = config.getParameter<double>("sigmaY");
  eledig = config.getParameter<bool>("digitizeElectrons");
  
  if (rpcdigiprint) {
    edm::LogInfo("RPC digitizer parameters") <<"Average Efficiency        = "<<aveEff;
    edm::LogInfo("RPC digitizer parameters") <<"Average Cluster Size      = "<<aveCls<<" strips";
    edm::LogInfo("RPC digitizer parameters") <<"RPC Time Resolution       = "<<resRPC<<" ns";
    edm::LogInfo("RPC digitizer parameters") <<"RPC Signal formation time = "<<timOff<<" ns";
    edm::LogInfo("RPC digitizer parameters") <<"RPC adjacent strip delay  = "<<dtimCs<<" ns";
    edm::LogInfo("RPC digitizer parameters") <<"Electronic Jitter         = "<<resEle<<" ns";
    edm::LogInfo("RPC digitizer parameters") <<"Signal propagation time   = "<<sspeed<<" x c";
    edm::LogInfo("RPC digitizer parameters") <<"Link Board Gate Width     = "<<lbGate<<" ns";
  }
  
  _rpcSync = new RPCSynchronizer(config);
  
}

RPCSimModelTiming::~RPCSimModelTiming()
{
  delete _rpcSync;
}

void RPCSimModelTiming::simulate(const RPCRoll* roll,
                 const edm::PSimHitContainer& rpcHits,
                 CLHEP::HepRandomEngine* engine) 
{
  
  _rpcSync->setRPCSimSetUp(getRPCSimSetUp());
  theRpcDigiSimLinks.clear();
  theDetectorHitMap.clear();
  theRpcDigiSimLinks = RPCDigiSimLinks(roll->id().rawId());
  
  RPCDetId rpcId = roll->id();
  RPCGeomServ RPCname(rpcId);
  
  const Topology& topology=roll->specs()->topology();
  
  for (edm::PSimHitContainer::const_iterator _hit = rpcHits.begin();
       _hit != rpcHits.end(); ++_hit){
    
    if(!eledig &&  _hit-> particleType() == 11) continue;
    // Here I hould check if the RPC are up side down;
    const LocalPoint& entr=_hit->entryPoint();
    
    int time_hit = _rpcSync->getSimHitBxAndTimingForIRPC(&(*_hit), engine);
    double precise_time = _rpcSync->getSmearedTime();
    
    float posX = roll->strip(_hit->localPosition()) - static_cast<int>(roll->strip(_hit->localPosition()));
    
    std::vector<float> veff = (getRPCSimSetUp())->getEff(rpcId.rawId());
    
    // Effinciecy
    int centralStrip = topology.channel(entr)+1;;
    float fire = CLHEP::RandFlat::shoot(engine);
    
    float smearedPositionY = CLHEP::RandGaussQ::shoot(engine,_hit->localPosition().y(),sigmaY);
    
    if (fire < veff[centralStrip-1]) {
      
      int fstrip=centralStrip;
      int lstrip=centralStrip;
      
      // Compute the cluster size
      int clsize = this->getClSize(rpcId.rawId(),posX, engine); // This is for cluster size chamber by chamber
      std::vector<int> cls;
      cls.push_back(centralStrip);
      if (clsize > 1){
    for (int cl = 0; cl < (clsize-1)/2; cl++){
      if (centralStrip - cl -1 >= 1  ){
        fstrip = centralStrip-cl-1;
        cls.push_back(fstrip);
      }
      if (centralStrip + cl + 1 <= roll->nstrips() ){
        lstrip = centralStrip+cl+1;
        cls.push_back(lstrip);
      }
    }
    if (clsize%2 == 0 ){
      // insert the last strip according to the 
      // simhit position in the central strip 
      int lr = LeftRightNeighbour(*roll, entr, centralStrip);
      if (lr==1) {
        if (lstrip < roll->nstrips() ){
          lstrip++;
          cls.push_back(lstrip);
        }
      }else{
        if (fstrip > 1 ){
          fstrip--;
          cls.push_back(fstrip);
        }
      }
    }
      }
 
      //digitize all the strips in the cluster
      //in the previuos version some strips were dropped 
      //leading to un-physical "shift" of the cluster
      for (std::vector<int>::iterator i=cls.begin(); i!=cls.end();i++){
    std::pair<int, int> digi(*i,time_hit);
    RPCDigi adigi(*i,time_hit);
    adigi.hasTime(true);
    adigi.setTime(precise_time);
    if(do_Y)
      {
        adigi.hasY(true);
        adigi.setY(smearedPositionY);
        adigi.setDeltaY(sigmaY);
      }
    irpc_digis.insert(adigi);
    theDetectorHitMap.insert(DetectorHitMap::value_type(digi,&(*_hit)));
      }
    }
  }
}


void RPCSimModelTiming::simulateNoise(const RPCRoll* roll,
                      CLHEP::HepRandomEngine* engine) 
{
  RPCDetId rpcId = roll->id();
  RPCGeomServ RPCname(rpcId);
  std::vector<float> vnoise = (getRPCSimSetUp())->getNoise(rpcId.rawId());
  std::vector<float> veff = (getRPCSimSetUp())->getEff(rpcId.rawId());
  unsigned int nstrips = roll->nstrips();
  double area = 0.0;
  float striplength, xmin,xmax ;
  if ( rpcId.region() == 0 )
    {
      const RectangularStripTopology* top_ = dynamic_cast<const
        RectangularStripTopology*>(&(roll->topology()));
      xmin = (top_->localPosition(0.)).x();
      xmax = (top_->localPosition((float)roll->nstrips())).x();
      striplength = (top_->stripLength());
      area = striplength*(xmax-xmin);
    }
  else
    {
      const TrapezoidalStripTopology* top_=dynamic_cast<const TrapezoidalStripTopology*>(&(roll->topology()));
      xmin = (top_->localPosition(0.)).x();
      xmax = (top_->localPosition((float)roll->nstrips())).x();
      striplength = (top_->stripLength());
      area = striplength*(xmax-xmin);
    }
  
  for(unsigned int j = 0; j < vnoise.size(); ++j){
    
    if(j >= nstrips) break;
    
    double ave =
      vnoise[j]*nbxing*gate*area*1.0e-9*frate/((float)roll->nstrips());
    
    CLHEP::RandPoissonQ randPoissonQ(*engine, ave);
    N_hits = randPoissonQ.fire();
    for (int i = 0; i < N_hits; i++ ){   
      
      
      double precise_time = CLHEP::RandFlat::shoot(engine, (nbxing*gate)/gate);
      int time_hit = (static_cast<int>(precise_time)) - nbxing/2;
      RPCDigi adigi(j+1,time_hit);
      adigi.hasTime(true);
      adigi.setTime(precise_time);
      if(do_Y)
    {
      double positionY = CLHEP::RandFlat::shoot(engine,striplength);
      positionY-=striplength/2; 
      adigi.hasY(true);
      adigi.setY(positionY);
          adigi.setDeltaY(sigmaY);
    }
      irpc_digis.insert(adigi);
      
    }
  } 
}


int RPCSimModelTiming::getClSize(uint32_t id,float posX, CLHEP::HepRandomEngine* engine)
{
  std::vector<double> clsForDetId = getRPCSimSetUp()->getCls(id);
  
  int cnt = 1;
  int min = 1;
  double func=0.0;
  std::vector<double> sum_clsize;
  
  sum_clsize.clear();
  sum_clsize = clsForDetId;
  int vectOffset(0);
  
  double rr_cl = CLHEP::RandFlat::shoot(engine);
  
  if(0.0 <= posX && posX < 0.2)  {
    func = clsForDetId[19]*(rr_cl);
    vectOffset = 0;
  }
  if(0.2 <= posX && posX < 0.4) {
    func = clsForDetId[39]*(rr_cl);
    vectOffset = 20;
  }
  if(0.4 <= posX && posX < 0.6) {
    func = clsForDetId[59]*(rr_cl);
    vectOffset = 40;
  }
  if(0.6 <= posX && posX < 0.8) {
    func = clsForDetId[79]*(rr_cl);
    vectOffset = 60;
  }  
  if(0.8 <= posX && posX < 1.0)  {
    func = clsForDetId[89]*(rr_cl);
    vectOffset = 80;
  }
  
  
  for(int i = vectOffset; i<(vectOffset+20); i++){
    cnt++;
    if(func > clsForDetId[i]){
      min = cnt;
    }
    else if(func < clsForDetId[i]){
      break;
    }
  }
  return min;
}

int RPCSimModelTiming::LeftRightNeighbour(const RPCRoll& roll, const LocalPoint & hit_pos, int strip){
  
  //if left return -1
  //if right return +1

  int leftStrip =  strip-1;
  int rightStrip = strip+1;
  
  if(leftStrip<0)
    return +1;
  if( rightStrip > roll.nstrips())
    return -1;

  double deltawL = fabs((roll.centreOfStrip(leftStrip)).x()-hit_pos.x());
  double deltawR = fabs((roll.centreOfStrip(rightStrip)).x()-hit_pos.x());
  
  if(deltawL>=deltawR){
    return +1;
  }
  else {
    return -1;
  }
  
}