BarrelDetLayer Class Reference

#include <BarrelDetLayer.h>

Inheritance diagram for BarrelDetLayer:

Public Member Functions
	BarrelDetLayer (bool doHaveGroup)
std::pair< bool, TrajectoryStateOnSurface >	compatible (const TrajectoryStateOnSurface &ts, const Propagator &, const MeasurementEstimator &) const final
bool	contains (const Local3DPoint &p) const
Location	location () const final
	DetLayer interface. More...
virtual const BoundCylinder &	specificSurface () const final
	Extension of the interface. More...
const BoundSurface &	surface () const final
	GeometricSearchDet interface. More...
	~BarrelDetLayer () override
Public Member Functions inherited from DetLayer
	DetLayer (bool doHaveGroup, bool ibar)
bool	isBarrel () const
bool	isForward () const
int	seqNum () const
void	setSeqNum (int sq)
virtual SubDetector	subDetector () const =0
	The type of detector (PixelBarrel, PixelEndcap, TIB, TOB, TID, TEC, CSC, DT, RPCBarrel, RPCEndcap) More...
	~DetLayer () override
Public Member Functions inherited from GeometricSearchDet
virtual const std::vector< const GeomDet * > &	basicComponents () const =0
virtual std::vector< DetWithState >	compatibleDets (const TrajectoryStateOnSurface &startingState, const Propagator &prop, const MeasurementEstimator &est) const
virtual void	compatibleDetsV (const TrajectoryStateOnSurface &startingState, const Propagator &prop, const MeasurementEstimator &est, std::vector< DetWithState > &result) const
virtual const std::vector< const GeometricSearchDet * > &	components () const =0
	Returns basic components, if any. More...
	GeometricSearchDet (bool doHaveGroups)
virtual std::vector< DetGroup >	groupedCompatibleDets (const TrajectoryStateOnSurface &startingState, const Propagator &prop, const MeasurementEstimator &est) const
virtual void	groupedCompatibleDetsV (const TrajectoryStateOnSurface &startingState, const Propagator &prop, const MeasurementEstimator &est, std::vector< DetGroup > &result) const
bool	hasGroups () const
virtual const Surface::PositionType &	position () const
	Returns position of the surface. More...
virtual	~GeometricSearchDet ()

Protected Member Functions
SimpleCylinderBounds const &	bounds () const
virtual BoundCylinder *	computeSurface ()
virtual void	initialize ()
void	setSurface (BoundCylinder *cp)

Private Attributes
ReferenceCountingPointer< BoundCylinder >	theCylinder

Additional Inherited Members
Public Types inherited from DetLayer
typedef GeomDetEnumerators::Location	Location
typedef GeomDetEnumerators::SubDetector	SubDetector
Public Types inherited from GeometricSearchDet
typedef std::pair< const GeomDet *, TrajectoryStateOnSurface >	DetWithState
typedef BoundSurface::PositionType	PositionType
typedef BoundSurface::RotationType	RotationType
typedef TrajectoryStateOnSurface	TrajectoryState
Protected Attributes inherited from GeometricSearchDet
bool	haveGroups
GeomDetCompatibilityChecker	theCompatibilityChecker

Detailed Description

A specialization of the DetLayer interface for barrel layers. Barrel layers are cylinders with their axes parallel to the global Z axis. The methods that have a common implementation for all BarrelDetLayers are implemented in this class, but some methods are left abstract.

Definition at line 22 of file BarrelDetLayer.h.

Constructor & Destructor Documentation

BarrelDetLayer()

BarrelDetLayer::BarrelDetLayer ( bool  doHaveGroup )

inline

Definition at line 24 of file BarrelDetLayer.h.

: DetLayer(doHaveGroup, true), theCylinder(nullptr) {}

~BarrelDetLayer()

BarrelDetLayer::~BarrelDetLayer ( )

override

Definition at line 11 of file BarrelDetLayer.cc.

{}

Member Function Documentation

bounds()

SimpleCylinderBounds const& BarrelDetLayer::bounds ( ) const

inlineprotected

Definition at line 49 of file BarrelDetLayer.h.

References runTheMatrix::const, and theCylinder.

{ return static_cast<SimpleCylinderBounds const&>(theCylinder->bounds()); }

compatible()

pair< bool, TrajectoryStateOnSurface > BarrelDetLayer::compatible ( const TrajectoryStateOnSurface &  ts, const Propagator &  , const MeasurementEstimator &    ) const

finalvirtual

tests the geometrical compatibility of the Det with the predicted state. The FreeTrajectoryState argument is propagated to the Det surface using the Propagator argument. The resulting TrajectoryStateOnSurface is tested for compatibility with the surface bounds. If compatible, a std::pair< true, propagatedState> is returned. If the propagation fails, or if the state is not compatible, a std::pair< false, propagatedState> is returned.

Implements GeometricSearchDet.

Definition at line 58 of file BarrelDetLayer.cc.

References funct::abs(), TrajectoryStateOnSurface::cartesianError(), GlobalErrorBase< T, ErrorWeightType >::czz(), l1tTrackerHTMiss_cfi::deltaZ, TrajectoryStateOnSurface::globalDirection(), TrajectoryStateOnSurface::globalPosition(), TrajectoryStateOnSurface::hasError(), TrajectoryStateOnSurface::isValid(), HLTSiStripMonitoring_cff::nSigma, PV3DBase< T, PVType, FrameType >::perp(), CartesianTrajectoryError::position(), Propagator::propagate(), mathSSE::sqrt(), UNLIKELY, and PV3DBase< T, PVType, FrameType >::z().

                                                                                                   {
  if UNLIKELY (theCylinder == nullptr)
    edm::LogError("DetLayers") << "ERROR: BarrelDetLayer::compatible() is used before the layer surface is initialized";
  // throw an exception? which one?

  TrajectoryStateOnSurface myState = prop.propagate(ts, specificSurface());
  if UNLIKELY (!myState.isValid())
    return make_pair(false, myState);

  // check z assuming symmetric bounds around position().z()
  auto z0 = std::abs(myState.globalPosition().z() - specificSurface().position().z());
  auto deltaZ = 0.5f * bounds().length();
  if (z0 < deltaZ)
    return make_pair(true, myState);

  // take into account the thickness of the layer
  deltaZ += 0.5f * bounds().thickness() * std::abs(myState.globalDirection().z()) / myState.globalDirection().perp();

  // take also into account the error on the predicted state
  const float nSigma = 3.;
  if (myState.hasError())
    deltaZ += nSigma * sqrt(myState.cartesianError().position().czz());
  //
  //  check z again
  return make_pair(z0 < deltaZ, myState);
}

computeSurface()

BoundCylinder * BarrelDetLayer::computeSurface ( )

protectedvirtual

Definition at line 21 of file BarrelDetLayer.cc.

References Cylinder::computeRadius(), BoundingBox::corners(), F(), SiStripPI::max, SiStripPI::min, and makeMuonMisalignmentScenario::rot.

                                              {
  vector<const GeomDet*> comps = basicComponents();

  // Find extension in Z
  float theRmin = comps.front()->position().perp();
  float theRmax = theRmin;
  float theZmin = comps.front()->position().z();
  float theZmax = theZmin;
  for (vector<const GeomDet*>::const_iterator deti = comps.begin(); deti != comps.end(); deti++) {
    vector<GlobalPoint> corners = BoundingBox().corners(dynamic_cast<const Plane&>((*deti)->surface()));
    for (vector<GlobalPoint>::const_iterator ic = corners.begin(); ic != corners.end(); ic++) {
      float r = ic->perp();
      float z = ic->z();
      theRmin = min(theRmin, r);
      theRmax = max(theRmax, r);
      theZmin = min(theZmin, z);
      theZmax = max(theZmax, z);
    }
    // in addition to the corners we have to check the middle of the
    // det +/- thickness/2
    // , since the min  radius for some barrel dets is reached there
    float rdet = (**deti).position().perp();
    float thick = (**deti).surface().bounds().thickness();
    theRmin = min(theRmin, rdet - thick / 2.F);
    theRmax = max(theRmax, rdet + thick / 2.F);
  }

  // By default the barrel layers are positioned at the center of the
  // global frame, and the axes of their local frame coincide with
  // those of the global grame (z along the cylinder axis)
  PositionType pos(0., 0., 0.);
  RotationType rot;

  auto scp = new SimpleCylinderBounds(theRmin, theRmax, theZmin, theZmax);
  return new Cylinder(Cylinder::computeRadius(*scp), pos, rot, scp);
}

contains()

bool BarrelDetLayer::contains

(

const Local3DPoint &

p

)

const

Definition at line 16 of file BarrelDetLayer.cc.

References AlCaHLTBitMon_ParallelJobs::p.

{ return surface().bounds().inside(p); }

initialize()

void BarrelDetLayer::initialize ( void  )

protectedvirtual

Definition at line 18 of file BarrelDetLayer.cc.

Referenced by TBPLayer::construct(), MTDTrayBarrelLayer::MTDTrayBarrelLayer(), MuRodBarrelLayer::MuRodBarrelLayer(), Phase2OTtiltedBarrelLayer::Phase2OTtiltedBarrelLayer(), and TIBLayer::TIBLayer().

{ setSurface(computeSurface()); }

location()

Location BarrelDetLayer::location ( ) const

inlinefinalvirtual

DetLayer interface.

Implements DetLayer.

Definition at line 36 of file BarrelDetLayer.h.

References GeomDetEnumerators::barrel.

{ return GeomDetEnumerators::barrel; }

setSurface()

void BarrelDetLayer::setSurface ( BoundCylinder *  cp )

protected

Definition at line 14 of file BarrelDetLayer.cc.

References CommonMethods::cp().

{ theCylinder = cp; }

specificSurface()

virtual const BoundCylinder& BarrelDetLayer::specificSurface ( ) const

inlinefinalvirtual

Extension of the interface.

Definition at line 39 of file BarrelDetLayer.h.

References theCylinder.

Referenced by MuonNavigationSchool::addBarrelLayer(), GroupedCkfTrajectoryBuilder::advanceOneLayer(), CkfDebugger::analyseRecHitNotFound(), DirectMuonNavigation::checkCompatible(), DirectTrackerNavigation::checkCompatible(), MuonShowerInformationFiller::crossingPoint(), MultipleScatteringGeometry::detLayers(), HitPairGeneratorFromLayerPairForPhotonConversion::getLayerRadius(), PixelTripletNoTipGenerator::hitTriplets(), ThirdHitCorrection::init(), InnerDeltaPhi::initBarrelLayer(), InnerDeltaPhi::initBarrelMS(), ThirdHitRZPredictionBase::initLayer(), ThirdHitPrediction::initLayer(), TkLayerLess::insideOutLess(), TkLayerLess::insideOutLessSigned(), SimpleNavigationSchool::linkNextForwardLayer(), OutInConversionSeedFinder::makeEstimator(), MSLayer::MSLayer(), MuonDetLayerComp::operator()(), ExtractBarrelDetLayerR::operator()(), TIBLayer::TIBLayer(), and SimpleNavigableLayer::wellInside().

{ return *theCylinder; }

surface()

const BoundSurface& BarrelDetLayer::surface ( ) const

inlinefinalvirtual

GeometricSearchDet interface.

Implements GeometricSearchDet.

Definition at line 29 of file BarrelDetLayer.h.

References theCylinder.

Referenced by TkLayerLess::barrelForwardLess(), PixelTripletNoTipGenerator::hitTriplets(), ThirdHitRZPredictionBase::initLayer(), ThirdHitPrediction::initLayer(), SimpleNavigationSchool::linkNextForwardLayer(), and MSLayer::MSLayer().

{ return *theCylinder; }

Member Data Documentation

theCylinder

ReferenceCountingPointer<BoundCylinder> BarrelDetLayer::theCylinder

private

Definition at line 53 of file BarrelDetLayer.h.

Referenced by bounds(), specificSurface(), and surface().