Helper tools to reconstruct single track conversions. More...

#include <SingleTrackConversionTool.h>

Inheritance diagram for InDet::SingleTrackConversionTool:

Collaboration diagram for InDet::SingleTrackConversionTool:

Public Member Functions
	SingleTrackConversionTool (const std::string &type, const std::string &name, const IInterface *parent)
virtual	~SingleTrackConversionTool ()=default
virtual StatusCode	initialize () override
virtual StatusCode	finalize () override
xAOD::Vertex *	buildSingleTrackParticleConversion (const xAOD::TrackParticle , xAOD::VertexContainer container) const
	Build single track conversion candidate.
bool	selectSingleTrackParticleConversion (const xAOD::TrackParticle *) const
	Select single track conversion candidates.
ServiceHandle< StoreGateSvc > &	evtStore ()
	The standard `StoreGateSvc` (event store) Returns (kind of) a pointer to the `StoreGateSvc`.
const ServiceHandle< StoreGateSvc > &	detStore () const
	The standard `StoreGateSvc/DetectorStore` Returns (kind of) a pointer to the `StoreGateSvc`.
virtual StatusCode	sysInitialize () override
	Perform system initialization for an algorithm.
virtual StatusCode	sysStart () override
	Handle START transition.
virtual std::vector< Gaudi::DataHandle * >	inputHandles () const override
	Return this algorithm's input handles.
virtual std::vector< Gaudi::DataHandle * >	outputHandles () const override
	Return this algorithm's output handles.
Gaudi::Details::PropertyBase &	declareProperty (Gaudi::Property< T, V, H > &t)
void	updateVHKA (Gaudi::Details::PropertyBase &)
MsgStream &	msg () const
bool	msgLvl (const MSG::Level lvl) const

Static Public Member Functions
static const InterfaceID &	interfaceID ()

Protected Member Functions
void	renounceArray (SG::VarHandleKeyArray &handlesArray)
	remove all handles from I/O resolution
std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void >	renounce (T &h)
void	extraDeps_update_handler (Gaudi::Details::PropertyBase &ExtraDeps)
	Add StoreName to extra input/output deps as needed.

Protected Attributes
DoubleProperty	m_minInitR
DoubleProperty	m_minInitR_noBLay
DoubleProperty	m_singleThreshold
IntegerProperty	m_maxBLhits {this, "MaxBLayerHits", 0, "Maximum number of blayer hits"}
BooleanProperty	m_PIDonlyForXe {this, "PIDonlyForXe", false, "Only check TRT PID if all hits are Xe hits"}

Private Types
typedef ServiceHandle< StoreGateSvc >	StoreGateSvc_t

Private Member Functions
Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
	specialization for handling Gaudi::Property<SG::VarHandleKey>

Private Attributes
StoreGateSvc_t	m_evtStore
	Pointer to StoreGate (event store by default)
StoreGateSvc_t	m_detStore
	Pointer to StoreGate (detector store by default)
std::vector< SG::VarHandleKeyArray * >	m_vhka
bool	m_varHandleArraysDeclared

Detailed Description

Helper tools to reconstruct single track conversions.

Author: Tatjana Lenz , Thomas Koffas

Definition at line 29 of file SingleTrackConversionTool.h.

Member Typedef Documentation

◆ StoreGateSvc_t

typedef ServiceHandle<StoreGateSvc> AthCommonDataStore< AthCommonMsg< AlgTool > >::StoreGateSvc_t

privateinherited

Definition at line 388 of file AthCommonDataStore.h.

Constructor & Destructor Documentation

◆ SingleTrackConversionTool()

InDet::SingleTrackConversionTool::SingleTrackConversionTool	(	const std::string &	type,
		const std::string &	name,
		const IInterface *	parent )

Definition at line 42 of file SingleTrackConversionTool.cxx.

    : AthAlgTool(type, name, parent)
  {
    declareInterface<SingleTrackConversionTool>(this);
  }

◆ ~SingleTrackConversionTool()

virtual InDet::SingleTrackConversionTool::~SingleTrackConversionTool ( )

virtualdefault

Member Function Documentation

◆ buildSingleTrackParticleConversion()

xAOD::Vertex * InDet::SingleTrackConversionTool::buildSingleTrackParticleConversion	(	const xAOD::TrackParticle *	track,
		xAOD::VertexContainer *	container ) const

Build single track conversion candidate.

xAOD::TrackParticle interface.

Create a RecVertex at the first measurement of the track.

Need to compute a global position covariance matrix as J.C.JT

The local position parameters covariance matrix C (2x2)

The Jacobian matrix J (3x2)

The A = J.C (3x2)

The A.JT = J.C.JT (3x3)

Construct the new covariance matrix (3x3)

The local position parameters covariance matrix C (2x2)

The straight line surface (wire) global directions

The particle global direction

The Jacobian matrix J (3x2)

The A = J.C (3x2)

The A.JT = J.C.JT (3x3)

Construct the new covariance matrix (3x3)

Definition at line 76 of file SingleTrackConversionTool.cxx.

  {
 
    unsigned int index(0);
    if (!track->indexOfParameterAtPosition(index, xAOD::FirstMeasurement)) {
      ATH_MSG_WARNING("TrackParticle has no first measurement");
      return nullptr;
    }
 
    const Trk::CurvilinearParameters trkPar =
      track->curvilinearParameters(index);
 
    const Amg::Vector3D& gp = trkPar.position();
    const AmgSymMatrix(5) em = *(trkPar.covariance());
 
    // ME: this is nuts, those values are 0, 0
    //    double chi2 = track->fitQuality()->chiSquared();
    //    int Ndf     = track->fitQuality()->numberDoF();
    const Amg::Transform3D& T = trkPar.associatedSurface().transform();
    AmgSymMatrix(3) nCovVtx;
 
    // Should use eigen to do all of this
 
    // ME: use the surface to find out what we do, do not hardcode the geoemtry
    if (Trk::SurfaceType::Plane == trkPar.associatedSurface().type()) {
      double p11 = em(Trk::locX, Trk::locX);
      double p12 = em(Trk::locX, Trk::locY);
      double p21 = em(Trk::locY, Trk::locX);
      double p22 = em(Trk::locY, Trk::locY);
      double Ax[3] = { T(0, 0), T(1, 0), T(2, 0) };
      double Ay[3] = { T(0, 1), T(1, 1), T(2, 1) };
      double a11 = Ax[0];
      double a12 = Ay[0];
      double a21 = Ax[1];
      double a22 = Ay[1];
      double a31 = Ax[2];
      double a32 = Ay[2];
      double A11 = a11 * p11 + a12 * p21;
      double A12 = a11 * p12 + a12 * p22;
      double A21 = a21 * p11 + a22 * p21;
      double A22 = a21 * p12 + a22 * p22;
      double A31 = a31 * p11 + a32 * p21;
      double A32 = a31 * p12 + a32 * p22;
      double P11 = a11 * A11 + A12 * a12;
      double P12 = A11 * a21 + A12 * a22;
      double P13 = A11 * a31 + A12 * a32;
      double P21 = A21 * a11 + A22 * a12;
      double P22 = A21 * a21 + A22 * a22;
      double P23 = A21 * a31 + A22 * a32;
      double P31 = A31 * a11 + A32 * a12;
      double P32 = A31 * a21 + A32 * a22;
      double P33 = A31 * a31 + A32 * a32;
      nCovVtx(0, 0) = P11;
      nCovVtx(0, 1) = P12;
      nCovVtx(0, 2) = P13;
      nCovVtx(1, 0) = P21;
      nCovVtx(1, 1) = P22;
      nCovVtx(1, 2) = P23;
      nCovVtx(2, 0) = P31;
      nCovVtx(2, 1) = P32;
      nCovVtx(2, 2) = P33;
 
    } else if (Trk::SurfaceType::Line == trkPar.associatedSurface().type()) {
      double p11 = em(Trk::locR, Trk::locR);
      double p12 = em(Trk::locR, Trk::locZ);
      double p21 = em(Trk::locZ, Trk::locR);
      double p22 = em(Trk::locZ, Trk::locZ);
      double A[3] = {T(0,2),T(1,2),T(2,2)};
      double Px = trkPar.momentum().x();
      double Py = trkPar.momentum().y();
      double Pz = trkPar.momentum().z();
      double Bx = A[1]*Pz-A[2]*Py;
      double By = A[2]*Px-A[0]*Pz;
      double Bz = A[0]*Py-A[1]*Px;
      double Bn = 1./sqrt(Bx*Bx+By*By+Bz*Bz); Bx*=Bn; By*=Bn; Bz*=Bn;
      double a11 = Bx; double a12 = A[0];
      double a21 = By; double a22 = A[1];
      double a31 = Bz; double a32 = A[2];
      double A11 = a11*p11 + a12*p21; double A12 = a11*p12 + a12*p22;
      double A21 = a21*p11 + a22*p21; double A22 = a21*p12 + a22*p22;
      double A31 = a31*p11 + a32*p21; double A32 = a31*p12 + a32*p22;
      double P11 = a11*A11 + A12*a12; double P12 = A11*a21 + A12*a22; double P13 = A11*a31 + A12*a32;
      double P21 = A21*a11 + A22*a12; double P22 = A21*a21 + A22*a22; double P23 = A21*a31 + A22*a32;
      double P31 = A31*a11 + A32*a12; double P32 = A31*a21 + A32*a22; double P33 = A31*a31 + A32*a32;
      nCovVtx(0,0) = P11; nCovVtx(0,1) = P12; nCovVtx(0,2) = P13;
      nCovVtx(1,0) = P21; nCovVtx(1,1) = P22; nCovVtx(1,2) = P23;
      nCovVtx(2,0) = P31; nCovVtx(2,1) = P32; nCovVtx(2,2) = P33;
    }
 
    // now construct the vertex from the global position, cov. put NdF and chi2 to zero (Markus)
 
 
    xAOD::Vertex* vertex = new xAOD::Vertex();
    container->push_back( vertex );
 
    vertex->setPosition(gp);
    vertex->setCovariancePosition(nCovVtx);
    vertex->setVertexType(xAOD::VxType::ConvVtx);
    vertex->setFitQuality( 0, 0);
 
    return vertex;
  }

◆ declareGaudiProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< AlgTool > >::declareGaudiProperty	(	Gaudi::Property< T, V, H > &	hndl,
		const SG::VarHandleKeyType &	)

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKey>

Definition at line 156 of file AthCommonDataStore.h.

  {
    return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                       hndl.value(), 
                                                       hndl.documentation());
 
  }

◆ declareProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty ( Gaudi::Property< T, V, H > & t )

inlineinherited

Definition at line 145 of file AthCommonDataStore.h.

                                                                     {
    typedef typename SG::HandleClassifier<T>::type htype;
    return AthCommonDataStore<PBASE>::declareGaudiProperty(t, htype());
  }

◆ detStore()

const ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< AlgTool > >::detStore ( ) const

inlineinherited

The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 95 of file AthCommonDataStore.h.

95{ return m_detStore; }

AthCommonDataStore< AthCommonMsg< AlgTool > >::m_detStore

StoreGateSvc_t m_detStore

Definition AthCommonDataStore.h:393

◆ evtStore()

ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< AlgTool > >::evtStore ( )

inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 85 of file AthCommonDataStore.h.

85{ return m_evtStore; }

AthCommonDataStore< AthCommonMsg< AlgTool > >::m_evtStore

StoreGateSvc_t m_evtStore

Definition AthCommonDataStore.h:390

◆ extraDeps_update_handler()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::extraDeps_update_handler ( Gaudi::Details::PropertyBase & ExtraDeps )

protectedinherited

Add StoreName to extra input/output deps as needed.

use the logic of the VarHandleKey to parse the DataObjID keys supplied via the ExtraInputs and ExtraOuputs Properties to add the StoreName if it's not explicitly given

◆ finalize()

StatusCode InDet::SingleTrackConversionTool::finalize ( )

overridevirtual

Definition at line 67 of file SingleTrackConversionTool.cxx.

                                                 {
    return StatusCode::SUCCESS;
  }

◆ initialize()

StatusCode InDet::SingleTrackConversionTool::initialize ( )

overridevirtual

Definition at line 60 of file SingleTrackConversionTool.cxx.

                                                   {
    return StatusCode::SUCCESS;
  }

◆ inputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< AlgTool > >::inputHandles ( ) const

overridevirtualinherited

Return this algorithm's input handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

◆ interfaceID()

const InterfaceID & InDet::SingleTrackConversionTool::interfaceID ( )

static

Definition at line 53 of file SingleTrackConversionTool.cxx.

                                                            {
    return IID_ISingleTrackConversionTool;
  }

◆ msg()

MsgStream & AthCommonMsg< AlgTool >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                {
    return this->msgStream();
  }

◆ msgLvl()

bool AthCommonMsg< AlgTool >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                               {
    return this->msgLevel(lvl);
  }

◆ outputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< AlgTool > >::outputHandles ( ) const

overridevirtualinherited

Return this algorithm's output handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

◆ renounce()

std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > AthCommonDataStore< AthCommonMsg< AlgTool > >::renounce ( T & h )

inlineprotectedinherited

Definition at line 380 of file AthCommonDataStore.h.

  {
    h.renounce();
    PBASE::renounce (h);
  }

◆ renounceArray()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::renounceArray ( SG::VarHandleKeyArray & handlesArray )

inlineprotectedinherited

remove all handles from I/O resolution

Definition at line 364 of file AthCommonDataStore.h.

                                                          {
    handlesArray.renounce();
  }

◆ selectSingleTrackParticleConversion()

bool InDet::SingleTrackConversionTool::selectSingleTrackParticleConversion ( const xAOD::TrackParticle * track ) const

Select single track conversion candidates.

xAOD::TrackParticle.

Definition at line 211 of file SingleTrackConversionTool.cxx.

                                                                                                         {
 
     //Position of first hit in track particle
 
    int index(-1);
    for(unsigned int i(0); i< track->numberOfParameters() ; ++i ){
      if( xAOD::FirstMeasurement == track->parameterPosition(i) ){
        index = i;
        break;
      }
    }
    if(index ==-1){
      ATH_MSG_WARNING("Track Particle does not contain first Measurement track parameters");
      return false;
    }
 
    const Trk::CurvilinearParameters trk_meas = track->curvilinearParameters(index);
 
    uint8_t dummy;
 
    uint8_t expectedHitInBLayer(0);
    if( track->summaryValue(dummy,xAOD::expectInnermostPixelLayerHit) )
       expectedHitInBLayer = dummy;
 
    float Rfirst = trk_meas.position().perp();
    if (expectedHitInBLayer)
    {
      // ME: cut on minInitR if blayer is ok
      if (Rfirst < m_minInitR)
      {
        ATH_MSG_DEBUG("BLayer hit expected. Radius of first hit (" <<
                      Rfirst << ") below minimum: " << m_minInitR);
        return false;
      }
    }
    else
    {
      // ME: cut on minInitR_NBLay if blayer is off
      if(Rfirst < m_minInitR_noBLay)
      {
        ATH_MSG_DEBUG("No BLayer hit expected. Radius of first hit (" <<
                      Rfirst << ") below minimum: " << m_minInitR_noBLay);
        return false;
      }
    }
 
 
    uint8_t nTrtHits(0);
    if( track->summaryValue(dummy, xAOD::numberOfTRTHits))
      nTrtHits = dummy;
 
    uint8_t nTrtOutliers(0);
    if(track->summaryValue(dummy, xAOD::numberOfTRTOutliers))
      nTrtOutliers = dummy;
 
    uint8_t ntrt = nTrtHits + nTrtOutliers;
 
    uint8_t nTrtXenonHits(0);
    if( track->summaryValue(dummy, xAOD::numberOfTRTXenonHits) )
       nTrtXenonHits = dummy;
 
 
 
    if(ntrt > 0 && (!m_PIDonlyForXe || nTrtXenonHits==ntrt) ) {
      // only check TRT PID if m_PIDonlyForXe is false or all TRT hits are Xenon hits
      float prob = 1.0;
      if( !track->summaryValue(prob,xAOD::eProbabilityHT) )
      {
        ATH_MSG_WARNING("Could not retrieve TR probability");
        return false;
      }
      if (prob < m_singleThreshold)
      {
        ATH_MSG_DEBUG("Probability (" << prob << ") below threshold: "
                      << m_singleThreshold);
        return false;
      }
    }
 
    uint8_t nBLHits(0);
    if( track->summaryValue(dummy,xAOD::numberOfInnermostPixelLayerHits))
      nBLHits += dummy;
    if( track->summaryValue(dummy, xAOD::numberOfInnermostPixelLayerOutliers))
      nBLHits += dummy;
    if(nBLHits > m_maxBLhits)
    {
      ATH_MSG_DEBUG("BLayer hits (" << nBLHits << ") above maximum: " << m_maxBLhits);
      return false;
    }
 
    return true;
  }

◆ sysInitialize()

virtual StatusCode AthCommonDataStore< AthCommonMsg< AlgTool > >::sysInitialize ( )

overridevirtualinherited

Perform system initialization for an algorithm.

We override this to declare all the elements of handle key arrays at the end of initialization. See comments on updateVHKA.

Reimplemented in asg::AsgMetadataTool, AthCheckedComponent< AthAlgTool >, AthCheckedComponent<::AthAlgTool >, and DerivationFramework::CfAthAlgTool.

◆ sysStart()

virtual StatusCode AthCommonDataStore< AthCommonMsg< AlgTool > >::sysStart ( )

overridevirtualinherited

Handle START transition.

We override this in order to make sure that conditions handle keys can cache a pointer to the conditions container.

◆ updateVHKA()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::updateVHKA ( Gaudi::Details::PropertyBase & )

inlineinherited

Definition at line 308 of file AthCommonDataStore.h.

                                               {
    // debug() << "updateVHKA for property " << p.name() << " " << p.toString() 
    //         << "  size: " << m_vhka.size() << endmsg;
    for (auto &a : m_vhka) {
      std::vector<SG::VarHandleKey*> keys = a->keys();
      for (auto k : keys) {
        k->setOwner(this);
      }
    }
  }

Member Data Documentation

◆ m_detStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< AlgTool > >::m_detStore

privateinherited

Pointer to StoreGate (detector store by default)

Definition at line 393 of file AthCommonDataStore.h.

◆ m_evtStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< AlgTool > >::m_evtStore

privateinherited

Pointer to StoreGate (event store by default)

Definition at line 390 of file AthCommonDataStore.h.

◆ m_maxBLhits

IntegerProperty InDet::SingleTrackConversionTool::m_maxBLhits {this, "MaxBLayerHits", 0, "Maximum number of blayer hits"}

protected

Definition at line 59 of file SingleTrackConversionTool.h.

60{this, "MaxBLayerHits", 0, "Maximum number of blayer hits"};

◆ m_minInitR

DoubleProperty InDet::SingleTrackConversionTool::m_minInitR

protected

Initial value:

{this, "MinInitialHitRadius", 70.,

"Minimum initial hit radius in order to consider track as coming from photon conversion"}

Definition at line 50 of file SingleTrackConversionTool.h.

51 {this, "MinInitialHitRadius", 70.,

52 "Minimum initial hit radius in order to consider track as coming from photon conversion"};

◆ m_minInitR_noBLay

DoubleProperty InDet::SingleTrackConversionTool::m_minInitR_noBLay

protected

Initial value:

{this, "MinInitialHitRadius_noBlay", 120.,

"Minimum initial hit radius in order to consider track as coming from photon conversion"}

Definition at line 53 of file SingleTrackConversionTool.h.

54 {this, "MinInitialHitRadius_noBlay", 120.,

55 "Minimum initial hit radius in order to consider track as coming from photon conversion"};

◆ m_PIDonlyForXe

BooleanProperty InDet::SingleTrackConversionTool::m_PIDonlyForXe {this, "PIDonlyForXe", false, "Only check TRT PID if all hits are Xe hits"}

protected

Definition at line 61 of file SingleTrackConversionTool.h.

62{this, "PIDonlyForXe", false, "Only check TRT PID if all hits are Xe hits"};

◆ m_singleThreshold

DoubleProperty InDet::SingleTrackConversionTool::m_singleThreshold

protected

Initial value:

{this, "MinRatioOfHLhits", 0.1,

"Minimum ratio of HL hits for a track to be labeled as electron"}

Definition at line 56 of file SingleTrackConversionTool.h.

57 {this, "MinRatioOfHLhits", 0.1,

58 "Minimum ratio of HL hits for a track to be labeled as electron"};

◆ m_varHandleArraysDeclared

bool AthCommonDataStore< AthCommonMsg< AlgTool > >::m_varHandleArraysDeclared

privateinherited

Definition at line 399 of file AthCommonDataStore.h.

◆ m_vhka

std::vector<SG::VarHandleKeyArray*> AthCommonDataStore< AthCommonMsg< AlgTool > >::m_vhka

privateinherited

Definition at line 398 of file AthCommonDataStore.h.

The documentation for this class was generated from the following files:

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ StoreGateSvc_t

Constructor & Destructor Documentation

◆ SingleTrackConversionTool()

◆ ~SingleTrackConversionTool()

Member Function Documentation

◆ buildSingleTrackParticleConversion()

◆ declareGaudiProperty()

◆ declareProperty()

◆ detStore()

◆ evtStore()

◆ extraDeps_update_handler()

◆ finalize()

◆ initialize()

◆ inputHandles()

◆ interfaceID()

◆ msg()

◆ msgLvl()

◆ outputHandles()

◆ renounce()

◆ renounceArray()

◆ selectSingleTrackParticleConversion()

◆ sysInitialize()

◆ sysStart()

◆ updateVHKA()

Member Data Documentation

◆ m_detStore

◆ m_evtStore

◆ m_maxBLhits

◆ m_minInitR

◆ m_minInitR_noBLay

◆ m_PIDonlyForXe

◆ m_singleThreshold

◆ m_varHandleArraysDeclared

◆ m_vhka