RPCSynchronizer Class Reference

#include <RPCSynchronizer.h>

Public Member Functions
RPCSimSetUp *	getRPCSimSetUp ()
int	getSimHitBx (const PSimHit *, CLHEP::HepRandomEngine *)
	RPCSynchronizer (const edm::ParameterSet &config)
void	setRPCSimSetUp (RPCSimSetUp *simsetup)
	~RPCSynchronizer ()

Private Attributes
double	cosmicPar
bool	cosmics
double	cspeed
double	dtimCs
double	lbGate
double	lbGateNew
double	LHCGate
double	resEle
double	resRPC
double	sspeed
RPCSimSetUp *	theSimSetUp
double	timOff

Detailed Description

Class for the RPC strip response simulation based on a parametrized model (ORCA-based)

Author

Raffaello Trentadue – INFN Bari

Definition at line 36 of file RPCSynchronizer.h.

Constructor & Destructor Documentation

RPCSynchronizer::RPCSynchronizer

(

const edm::ParameterSet &

config

)

Definition at line 34 of file RPCSynchronizer.cc.

References trackerHits::c, alignCSCRings::e, and edm::ParameterSet::getParameter().

                                                             {

  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");
  LHCGate = config.getParameter<double>("Gate");
  cosmics = config.getParameter<bool>("cosmics");

  //"magic" parameter for cosmics
  cosmicPar=37.62;

  double c=299792458;// [m/s]
  //light speed in [cm/ns]
  cspeed=c*1e+2*1e-9;
  //signal propagation speed [cm/ns]
  sspeed=sspeed*cspeed;

}

RPCSynchronizer::~RPCSynchronizer

(

)

Definition at line 56 of file RPCSynchronizer.cc.

                                 {
}

Member Function Documentation

RPCSimSetUp* RPCSynchronizer::getRPCSimSetUp ( )

inline

Definition at line 44 of file RPCSynchronizer.h.

References theSimSetUp.

{ return theSimSetUp; }

int RPCSynchronizer::getSimHitBx	(	const PSimHit *	simhit,
		CLHEP::HepRandomEngine *	engine
	)

Definition at line 60 of file RPCSynchronizer.cc.

References rpc-layouts::bx, RPCGeometry::dets(), PSimHit::detUnitId(), geometry, RPCSimSetUp::getGeometry(), RPCSimSetUp::getTime(), PSimHit::localPosition(), n, alignCSCRings::r, PSimHit::timeOfFlight(), and PV3DBase< T, PVType, FrameType >::y().

Referenced by RPCSimSimple::simulate(), RPCSimParam::simulate(), RPCSimAverageNoise::simulate(), RPCSimAverageNoiseEffCls::simulate(), RPCSimAverageNoiseEff::simulate(), RPCSimAsymmetricCls::simulate(), and RPCSimAverage::simulate().

{

  RPCSimSetUp* simsetup = this->getRPCSimSetUp();
  const RPCGeometry * geometry = simsetup->getGeometry();
  float timeref = simsetup->getTime(simhit->detUnitId());

  int bx = -999;
  LocalPoint simHitPos = simhit->localPosition();
  float tof = simhit->timeOfFlight();
  
  //automatic variable to prevent memory leak
  
  float rr_el = CLHEP::RandGaussQ::shoot(engine, 0.,resEle);
  
  RPCDetId SimDetId(simhit->detUnitId());

  const RPCRoll* SimRoll = 0;

  for(TrackingGeometry::DetContainer::const_iterator it = geometry->dets().begin(); it != geometry->dets().end(); it++){
    
    if( dynamic_cast< const RPCChamber* >( *it ) != 0 ){
      
      auto ch = dynamic_cast<const RPCChamber* >( *it ); 

      std::vector< const RPCRoll*> rollsRaf = (ch->rolls());
      for(std::vector<const RPCRoll*>::iterator r = rollsRaf.begin();
      r != rollsRaf.end(); ++r){

      if((*r)->id() == SimDetId) {
        SimRoll = &(*(*r));
        break;
      }
      }
    }
  }

  if(SimRoll != 0){

    float distanceFromEdge = 0;
    float half_stripL = 0.;

    if(SimRoll->id().region() == 0){
      const RectangularStripTopology* top_= dynamic_cast<const RectangularStripTopology*> (&(SimRoll->topology()));
      half_stripL = top_->stripLength()/2;
      distanceFromEdge = half_stripL + simHitPos.y();
    }else{
      const TrapezoidalStripTopology* top_= dynamic_cast<const TrapezoidalStripTopology*> (&(SimRoll->topology()));
      half_stripL = top_->stripLength()/2;
      distanceFromEdge = half_stripL - simHitPos.y();
    }


    float prop_time =  distanceFromEdge/sspeed;

    double rr_tim1 = CLHEP::RandGaussQ::shoot(engine, 0.,resRPC);
    double total_time = tof + prop_time + timOff + rr_tim1 + rr_el;
    
    // Bunch crossing assignment
    double time_differ = 0.;

    if(cosmics){
      time_differ = (total_time - (timeref + ((half_stripL/sspeed ) + timOff)))/cosmicPar;
    }
    else if(!cosmics){
      time_differ = total_time - (timeref + ( half_stripL/sspeed ) + timOff);
    }
     
    double inf_time = 0;
    double sup_time = 0;


    for(int n = -5; n <= 5; ++n){

      if(cosmics){
    inf_time = (-lbGate/2 + n*LHCGate )/cosmicPar;
    sup_time = ( lbGate/2 + n*LHCGate )/cosmicPar;
      }
      else if(!cosmics){
    inf_time = -lbGate/2 + n*LHCGate;
    sup_time =  lbGate/2 + n*LHCGate;
      }

      if(inf_time < time_differ && time_differ < sup_time) {
    bx = n;
    break;
      }
    }
  }


  return bx;
}

void RPCSynchronizer::setRPCSimSetUp ( RPCSimSetUp *  simsetup )

inline

Definition at line 43 of file RPCSynchronizer.h.

References theSimSetUp.

Referenced by RPCSimSimple::simulate(), RPCSimParam::simulate(), RPCSimAverageNoise::simulate(), RPCSimAverageNoiseEffCls::simulate(), RPCSimAverageNoiseEff::simulate(), RPCSimAsymmetricCls::simulate(), and RPCSimAverage::simulate().

{theSimSetUp = simsetup;}

Member Data Documentation

double RPCSynchronizer::cosmicPar

private

Definition at line 56 of file RPCSynchronizer.h.

bool RPCSynchronizer::cosmics

private

Definition at line 58 of file RPCSynchronizer.h.

double RPCSynchronizer::cspeed

private

Definition at line 53 of file RPCSynchronizer.h.

double RPCSynchronizer::dtimCs

private

Definition at line 50 of file RPCSynchronizer.h.

double RPCSynchronizer::lbGate

private

Definition at line 54 of file RPCSynchronizer.h.

double RPCSynchronizer::lbGateNew

private

Definition at line 55 of file RPCSynchronizer.h.

double RPCSynchronizer::LHCGate

private

Definition at line 57 of file RPCSynchronizer.h.

double RPCSynchronizer::resEle

private

Definition at line 51 of file RPCSynchronizer.h.

double RPCSynchronizer::resRPC

private

Definition at line 48 of file RPCSynchronizer.h.

double RPCSynchronizer::sspeed

private

Definition at line 52 of file RPCSynchronizer.h.

RPCSimSetUp* RPCSynchronizer::theSimSetUp

private

Definition at line 60 of file RPCSynchronizer.h.

Referenced by getRPCSimSetUp(), and setRPCSimSetUp().

double RPCSynchronizer::timOff

private

Definition at line 49 of file RPCSynchronizer.h.