#include <DTNoDriftAlgo.h>

Inheritance diagram for DTNoDriftAlgo:

Public Member Functions
virtual bool	compute (const DTLayer *layer, const DTDigi &digi, LocalPoint &leftPoint, LocalPoint &rightPoint, LocalError &error) const

virtual bool	compute (const DTLayer *layer, const DTRecHit1D &recHit1D, const float &angle, DTRecHit1D &newHit1D) const

virtual bool	compute (const DTLayer *layer, const DTRecHit1D &recHit1D, const float &angle, const GlobalPoint &globPos, DTRecHit1D &newHit1D) const

	DTNoDriftAlgo (const edm::ParameterSet &config)
	Constructor. More...

virtual edm::OwnVector< DTRecHit1DPair >	reconstruct (const DTLayer *layer, const DTLayerId &layerId, const DTDigiCollection::Range &digiRange)

virtual void	setES (const edm::EventSetup &setup)
	Pass the Event Setup to the algo at each event. More...

virtual	~DTNoDriftAlgo ()
	Destructor. More...

Public Member Functions inherited from DTRecHitBaseAlgo
	DTRecHitBaseAlgo (const edm::ParameterSet &config)
	Constructor. More...

virtual	~DTRecHitBaseAlgo ()
	Destructor. More...

Private Member Functions
virtual bool	compute (const DTLayer *layer, const DTWireId &wireId, const float digiTime, const GlobalPoint &globPos, LocalPoint &leftPoint, LocalPoint &rightPoint, LocalError &error, int step) const

virtual bool	compute (const DTLayer *layer, const DTWireId &wireId, const float digiTime, const GlobalPoint &globPos, DTRecHit1D &newHit1D, int step) const

Private Attributes
const bool	debug

const float	fixedDrift

const float	hitResolution

const float	maxTime

const float	minTime

Additional Inherited Members
Protected Attributes inherited from DTRecHitBaseAlgo
DTTTrigBaseSync *	theSync

Detailed Description

Concrete implementation of DTRecHitBaseAlgo. Create pair of RecHits at fixed distance from the wire.

Author: Martijn Mulders - CERN (marti.nosp@m.jn.m.nosp@m.ulder.nosp@m.s@ce.nosp@m.rn.ch) based on DTLinearDriftAlgo

Definition at line 17 of file DTNoDriftAlgo.h.

Constructor & Destructor Documentation

DTNoDriftAlgo::DTNoDriftAlgo ( const edm::ParameterSet & config )

Constructor.

Definition at line 18 of file DTNoDriftAlgo.cc.

                                                        :
   DTRecHitBaseAlgo(config),
   fixedDrift(config.getParameter<double>("fixedDrift")),
   hitResolution(config.getParameter<double>("hitResolution")), // Set to size of (half)cell 
   minTime(config.getParameter<double>("minTime")),
   maxTime(config.getParameter<double>("maxTime")),
   debug(config.getUntrackedParameter<bool>("debug")) // Set verbose output
  {}

DTNoDriftAlgo::~DTNoDriftAlgo ( )

virtual

Destructor.

Definition at line 29 of file DTNoDriftAlgo.cc.

29 {}

Member Function Documentation

bool DTNoDriftAlgo::compute	(	const DTLayer *	layer,
		const DTDigi &	digi,
		LocalPoint &	leftPoint,
		LocalPoint &	rightPoint,
		LocalError &	error
	)		const

virtual

First step in computation of Left/Right hits from a Digi. The results are the local position (in DTLayer frame) of the Left and Right hit, and the error (which is common). Returns false on failure. The hit is assumed to be at the wire center.

Implements DTRecHitBaseAlgo.

Definition at line 90 of file DTNoDriftAlgo.cc.

References relativeConstraints::error, DTLayer::id(), DTTopology::isWireValid(), DTLayer::specificTopology(), DTDigi::time(), GeomDet::toGlobal(), DTDigi::wire(), and DTTopology::wirePosition().

Referenced by compute(), and reconstruct().

                                          {
   // Get the wireId
   DTLayerId layerId = layer->id();
   const DTWireId wireId(layerId, digi.wire());
 
   // Get Wire position
   if(!layer->specificTopology().isWireValid(digi.wire())) return false;
   LocalPoint locWirePos(layer->specificTopology().wirePosition(digi.wire()), 0, 0);
   const GlobalPoint globWirePos = layer->toGlobal(locWirePos);
   
   return compute(layer, wireId, digi.time(), globWirePos, leftPoint, rightPoint, error, 1); 
 }

bool DTNoDriftAlgo::compute	(	const DTLayer *	layer,
		const DTRecHit1D &	recHit1D,
		const float &	angle,
		DTRecHit1D &	newHit1D
	)		const

virtual

Second step in hit position computation. It is the same as first step since the angular information is not used NOTE: Only position and error of the new hit are modified

Implements DTRecHitBaseAlgo.

Definition at line 110 of file DTNoDriftAlgo.cc.

References DTRecHit1D::localPosition(), DTRecHit1D::localPositionError(), and DTRecHit1D::setPositionAndError().

                                             {
   newHit1D.setPositionAndError(recHit1D.localPosition(), recHit1D.localPositionError());
   return true;
 }

bool DTNoDriftAlgo::compute	(	const DTLayer *	layer,
		const DTRecHit1D &	recHit1D,
		const float &	angle,
		const GlobalPoint &	globPos,
		DTRecHit1D &	newHit1D
	)		const

virtual

Third (and final) step in hits position computation. Also the hit position along the wire is available and can be used to correct the drift time for particle TOF and propagation of signal along the wire. NOTE: Only position and error of the new hit are modified

Implements DTRecHitBaseAlgo.

Definition at line 121 of file DTNoDriftAlgo.cc.

References compute(), DTRecHit1D::digiTime(), and DTRecHit1D::wireId().

                                             {
   return compute(layer, recHit1D.wireId(), recHit1D.digiTime(), globPos, newHit1D, 3);
 }

bool DTNoDriftAlgo::compute	(	const DTLayer *	layer,
		const DTWireId &	wireId,
		const float	digiTime,
		const GlobalPoint &	globPos,
		LocalPoint &	leftPoint,
		LocalPoint &	rightPoint,
		LocalError &	error,
		int	step
	)		const

privatevirtual

Definition at line 132 of file DTNoDriftAlgo.cc.

References gather_cfg::cout, debug, shallow::drift(), fixedDrift, hitResolution, DTTopology::isWireValid(), maxTime, DTLayer::specificTopology(), DTWireId::wire(), DTTopology::wirePosition(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                 {
   //}
 
   // Small negative times interpreted as hits close to the wire.
   //if (driftTime<0.) driftTime=0;
 
 
   // check for out-of-time
   if (digiTime < minTime || digiTime > maxTime) {
     if (debug) cout << "[DTNoDriftAlgo]*** Drift time out of window for in-time hits "
                   << digiTime << endl;
 
     if(step == 1) { //FIXME: protection against failure at 2nd and 3rd steps, must be checked!!!
       // Hits are interpreted as coming from out-of-time pile-up and recHit
       // is ignored.
       return false;
     }
   }
 
 
   // Compute the drift distance
   float drift = fixedDrift;
 
   // Get Wire position
   if(!layer->specificTopology().isWireValid(wireId.wire())) return false;
   LocalPoint locWirePos(layer->specificTopology().wirePosition(wireId.wire()), 0, 0);
   //Build the two possible points and the error on the position
   leftPoint  = LocalPoint(locWirePos.x()-drift,
                             locWirePos.y(),
                             locWirePos.z());
   rightPoint = LocalPoint(locWirePos.x()+drift,
                             locWirePos.y(),
                             locWirePos.z());
   error = LocalError(hitResolution*hitResolution,0.,0.);
 
   
   if(debug) {
     cout << "[DTNoDriftAlgo] Compute drift distance, for digi at wire: " << wireId << endl
      << "       Step:           " << step << endl
          << "       Digi time:      " << digiTime << endl
       //     << "       Drift time:     " << driftTime << endl
          << "       Fixed Drift distance: " << drift << endl
      << "       Hit Resolution: " << hitResolution << endl
      << "       Left point:     " << leftPoint << endl
      << "       Right point:    " << rightPoint << endl
      << "       Error:          " << error << endl;
   }
 
 
 
   return true;
   
 }

bool DTNoDriftAlgo::compute	(	const DTLayer *	layer,
		const DTWireId &	wireId,
		const float	digiTime,
		const GlobalPoint &	globPos,
		DTRecHit1D &	newHit1D,
		int	step
	)		const

privatevirtual

Definition at line 195 of file DTNoDriftAlgo.cc.

References compute(), relativeConstraints::error, Exception, DTEnums::Left, DTRecHit1D::lrSide(), DTEnums::Right, and DTRecHit1D::setPositionAndError().

                                 {
   LocalPoint leftPoint;
   LocalPoint rightPoint;
   LocalError error;
 
   if(compute(layer, wireId, digiTime, globPos, leftPoint, rightPoint, error, step)) {
     // Set the position and the error of the rechit which is being updated
     switch(newHit1D.lrSide()) {
     
     case DTEnums::Left:
       newHit1D.setPositionAndError(leftPoint, error);
       break;
     
     case DTEnums::Right:
       newHit1D.setPositionAndError(rightPoint, error);
       break;
     
     default:
       throw cms::Exception("InvalidDTCellSide") << "[DTNoDriftAlgo] Compute at Step "
                         << step << ", Hit side "
                         << newHit1D.lrSide()
                         << " is invalid!" << endl;
       return false;
     }
       
     return true;
   }else {
     return false;
   }
 }

OwnVector< DTRecHit1DPair > DTNoDriftAlgo::reconstruct	(	const DTLayer *	layer,
		const DTLayerId &	layerId,
		const DTDigiCollection::Range &	digiRange
	)

virtual

MM: Override virtual function from DTRecHitBaseAlgo–> for the NoDrift algorithm only a maximum of one hit per wire is allowed! Build all hits in the range associated to the layerId, at the 1st step.

Reimplemented from DTRecHitBaseAlgo.

Definition at line 41 of file DTNoDriftAlgo.cc.

References edm::OwnVector< T, P >::begin(), compute(), edm::OwnVector< T, P >::end(), DTEnums::Left, edm::OwnVector< T, P >::push_back(), mps_fire::result, DTEnums::Right, and DTRecHit1DPair::setPositionAndError().

                                                                     {
   OwnVector<DTRecHit1DPair> result; 
 
   // Loop over all digis in the given range
   for (DTDigiCollection::const_iterator digi = digiRange.first;
        digi != digiRange.second;
        digi++) {
     // Get the wireId
     DTWireId wireId(layerId, (*digi).wire());
 
     bool isDouble = false;
     for (OwnVector<DTRecHit1DPair>::const_iterator doubleWireCheck =  result.begin();
          doubleWireCheck != result.end();
      doubleWireCheck++) {
       if( wireId == (*doubleWireCheck).wireId()) {
     isDouble = true;
     //  std::cout << " Reject this hit with time " << (*digi).time() << std::endl; 
     break;
       }
     }
     
     if (isDouble) continue;
 
     LocalError tmpErr;
     LocalPoint lpoint, rpoint;
     // Call the compute method
     bool OK = compute(layer, *digi, lpoint, rpoint, tmpErr);
 
     if (!OK) continue;
 
     // Build a new pair of 1D rechit    
     DTRecHit1DPair*  recHitPair = new DTRecHit1DPair(wireId, *digi);
 
     // Set the position and the error of the 1D rechits
     recHitPair->setPositionAndError(DTEnums::Left, lpoint, tmpErr);
     recHitPair->setPositionAndError(DTEnums::Right, rpoint, tmpErr);        
 
     result.push_back(recHitPair);
   }
   return result;
 }

void DTNoDriftAlgo::setES ( const edm::EventSetup & setup )

virtual

Pass the Event Setup to the algo at each event.

Implements DTRecHitBaseAlgo.

Definition at line 33 of file DTNoDriftAlgo.cc.

                                                  {
   //  theSync->setES(setup);
 }

Member Data Documentation

const bool DTNoDriftAlgo::debug

private

Definition at line 105 of file DTNoDriftAlgo.h.

Referenced by compute().

const float DTNoDriftAlgo::fixedDrift

private

Definition at line 93 of file DTNoDriftAlgo.h.

Referenced by compute().

const float DTNoDriftAlgo::hitResolution

private

Definition at line 96 of file DTNoDriftAlgo.h.

Referenced by compute().

const float DTNoDriftAlgo::maxTime

private

Definition at line 102 of file DTNoDriftAlgo.h.

Referenced by compute().

const float DTNoDriftAlgo::minTime

private

Definition at line 99 of file DTNoDriftAlgo.h.

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation