MuonSegmentMomentumFromField Class Reference

#include <MuonSegmentMomentumFromField.h>

Inheritance diagram for MuonSegmentMomentumFromField:

Collaboration diagram for MuonSegmentMomentumFromField:

Public Member Functions
	MuonSegmentMomentumFromField (const std::string &, const std::string &, const IInterface *)
	constructor
MuonSegmentMomentumFromField &	operator= (const MuonSegmentMomentumFromField &)=delete
virtual StatusCode	initialize ()
	to initiate private members
virtual void	fitMomentum2Segments (const EventContext &ctx, const Muon::MuonSegment *segment1, const Muon::MuonSegment *segment2, double &signedMomentum) const
	fits a momentum to 2 segments
virtual void	fitMomentum2Segments_old (const EventContext &ctx, const Muon::MuonSegment *segment1, const Muon::MuonSegment *segment2, double &signedMomentum) const
virtual void	fitMomentumVectorSegments (const EventContext &, const std::vector< const Muon::MuonSegment * > &, double &signedMomentum) const
	fits a momentum to a vector of segments
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.

Private Types
typedef ServiceHandle< StoreGateSvc >	StoreGateSvc_t

Private Member Functions
double	fieldIntegralEstimate (const EventContext &ctx, const Muon::MuonSegment *segment1, const Muon::MuonSegment *segment2) const
double	fieldIntegralEstimate_old (const EventContext &ctx, const Muon::MuonSegment *segment1, const Muon::MuonSegment *segment2) const
Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
	specialization for handling Gaudi::Property<SG::VarHandleKey>

Private Attributes
ToolHandle< Trk::IPropagator >	m_propagator
ToolHandle< Trk::INavigator >	m_navigator
ServiceHandle< Muon::IMuonIdHelperSvc >	m_idHelperSvc {this, "MuonIdHelperSvc", "Muon::MuonIdHelperSvc/MuonIdHelperSvc"}
SG::ReadCondHandleKey< AtlasFieldCacheCondObj >	m_fieldCondObjInputKey {this, "AtlasFieldCacheCondObj", "fieldCondObj"}
Gaudi::Property< bool >	m_doOld {this, "DoOld", false, "Use old fitMomentum2Segments"}
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

Definition at line 23 of file MuonSegmentMomentumFromField.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

MuonSegmentMomentumFromField()

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

constructor

Definition at line 20 of file MuonSegmentMomentumFromField.cxx.

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

Member Function Documentation

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.

{ return m_detStore; }

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.

{ return m_evtStore; }

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

fieldIntegralEstimate()

double MuonSegmentMomentumFromField::fieldIntegralEstimate ( const EventContext & ctx, const Muon::MuonSegment * segment1, const Muon::MuonSegment * segment2 ) const

private

Definition at line 66 of file MuonSegmentMomentumFromField.cxx.

{
 
  Amg::Vector3D pos1=segment1->globalPosition();
  Amg::Vector3D pos2=segment2->globalPosition();
  Amg::Vector3D posdiff=pos2-pos1;
  if (posdiff.dot(segment1->globalDirection())<0){
    posdiff=-posdiff;
    pos1=segment2->globalPosition();
    pos2=segment1->globalPosition();
  }
  Amg::Vector3D point1=pos1+.25*posdiff;
  Amg::Vector3D point2=pos1+.5*posdiff;
  Amg::Vector3D point3=pos1+.75*posdiff;
  Amg::Vector3D field1,field2,field3;
 
  MagField::AtlasFieldCache fieldCache;
  SG::ReadCondHandle<AtlasFieldCacheCondObj> readHandle{m_fieldCondObjInputKey, ctx};
  const AtlasFieldCacheCondObj* fieldCondObj{*readHandle};
  if (!fieldCondObj) {
    throw std::runtime_error(Form("File: %s, Line: %d\nMuonSegmentMomentumFromField::fieldIntegralEstimate() - Failed to retrieve AtlasFieldCacheCondObj with key %s", __FILE__, __LINE__, (m_fieldCondObjInputKey.key()).c_str()));
  }
  fieldCondObj->getInitializedCache(fieldCache);
 
  fieldCache.getField(point1.data(),field1.data()); // field in kiloTesla
  fieldCache.getField(point2.data(),field2.data());
  fieldCache.getField(point3.data(),field3.data());
  ATH_MSG_DEBUG("Mid Point " << Amg::toString(point2) << " field " << Amg::toString(field2) );
  field1[2]=field2[2]=field3[2]=0;
  Amg::Vector3D fieldsum=field1+field2+field3;
  Amg::Vector3D crossvec=posdiff.unit().cross(field1+field2+field3);
  Amg::Vector2D rphidir(-posdiff.y(),posdiff.x());
  double averagelcrossB=crossvec.mag()/3;
  if (rphidir.x()*fieldsum.x()+rphidir.y()*fieldsum.y()<0) averagelcrossB=-averagelcrossB;
  ATH_MSG_DEBUG("field integral " << averagelcrossB << "dist " << posdiff.mag() << " tot " << averagelcrossB*posdiff.mag());
  return averagelcrossB*posdiff.mag();
}

fieldIntegralEstimate_old()

double MuonSegmentMomentumFromField::fieldIntegralEstimate_old ( const EventContext & ctx, const Muon::MuonSegment * segment1, const Muon::MuonSegment * segment2 ) const

private

Definition at line 244 of file MuonSegmentMomentumFromField.cxx.

{
 
  Amg::Vector3D pos1=segment1->globalPosition();
  Amg::Vector3D pos2=segment2->globalPosition();
  Amg::Vector3D posdiff=pos2-pos1;
  if (posdiff.dot(segment1->globalDirection())<0){
    posdiff=-posdiff;
    pos1=segment2->globalPosition();
    pos2=segment1->globalPosition();
  }
  Amg::Vector3D point1=pos1+.25*posdiff;
  Amg::Vector3D point2=pos1+.5*posdiff;
  Amg::Vector3D point3=pos1+.75*posdiff;
  Amg::Vector3D field1,field2,field3;
 
  MagField::AtlasFieldCache fieldCache;
  SG::ReadCondHandle<AtlasFieldCacheCondObj> readHandle{m_fieldCondObjInputKey, ctx};
  const AtlasFieldCacheCondObj* fieldCondObj{*readHandle};
  if (!fieldCondObj) {
    throw std::runtime_error(Form("File: %s, Line: %d\nMuonSegmentMomentumFromField::fieldIntegralEstimate_old() - Failed to retrieve AtlasFieldCacheCondObj with key %s", __FILE__, __LINE__, (m_fieldCondObjInputKey.key()).c_str()));
  }
  fieldCondObj->getInitializedCache(fieldCache);
 
  fieldCache.getField(point1.data(),field1.data()); // field in kiloTesla
  fieldCache.getField(point2.data(),field2.data());
  fieldCache.getField(point3.data(),field3.data());
  ATH_MSG_DEBUG("Mid Point " << Amg::toString(point2) << " field " << Amg::toString(field2) );
  double averageBcrossl=(field1.cross(posdiff.unit()).mag()+field2.cross(posdiff.unit()).mag()+field3.cross(posdiff.unit()).mag())/3;
  ATH_MSG_DEBUG("field integral " << averageBcrossl << "dist " << posdiff.mag() << " tot " << averageBcrossl*posdiff.mag());
  return averageBcrossl*posdiff.mag();
}

fitMomentum2Segments()

void MuonSegmentMomentumFromField::fitMomentum2Segments ( const EventContext & ctx, const Muon::MuonSegment * segment1, const Muon::MuonSegment * segment2, double & signedMomentum ) const

virtual

fits a momentum to 2 segments

Estimate signed momentum for two segments by fitting 2 segments to one approximate track model

Implements Muon::IMuonSegmentMomentumEstimator.

Definition at line 104 of file MuonSegmentMomentumFromField.cxx.

{

 
  ATH_MSG_VERBOSE(" Executing MuonSegmentMomentumTool  fitMomentum2Segments ");
 
  const Muon::MuonSegment* myseg1=segment1,*myseg2=segment2;
  if (myseg1->globalDirection().dot(myseg2->globalPosition()-myseg1->globalPosition())<0) {
    myseg1=segment2;
    myseg2=segment1;
  }
  double fieldintegral=fieldIntegralEstimate(ctx, myseg1,myseg2);
  double theta1=myseg1->globalDirection().theta();
  double theta2=myseg2->globalDirection().theta();
  double phi1=myseg1->globalDirection().phi();
  double phi2=myseg2->globalDirection().phi();
  double deltaphi=std::abs(phi2-phi1);
  double deltatheta=99999999;
  if (std::abs(deltaphi-2*M_PI)<deltaphi) deltaphi=std::abs(deltaphi-2*M_PI);
  if (deltaphi<M_PI/2) deltatheta=theta2-theta1;
  else {
    if (theta1>M_PI/2) deltatheta=2*M_PI-theta2-theta1;
    else deltatheta=-theta1-theta2;
  }
  double dist1=-1,dist2=-1;
  const Trk::RIO_OnTrack *firstphi1=nullptr,*lastphi1=nullptr,*firstphi2=nullptr,*lastphi2=nullptr;
 
  const Muon::MuonSegment *bestseg=myseg1,*worstseg=myseg2;
  for (int i=0;i<(int)myseg1->numberOfMeasurementBases();i++){
    const Trk::RIO_OnTrack *rot=dynamic_cast<const Trk::RIO_OnTrack *>(myseg1->measurement(i));
    if (!rot){
      const Trk::CompetingRIOsOnTrack *crot=dynamic_cast<const Trk::CompetingRIOsOnTrack *>(myseg1->measurement(i));
      if (crot) rot=&crot->rioOnTrack(0);
    }
    if (!rot) continue;
    Identifier id=rot->identify();
 
    if ((m_idHelperSvc->isRpc(id) && m_idHelperSvc->rpcIdHelper().measuresPhi(id)) || (m_idHelperSvc->isCsc(id) && m_idHelperSvc->cscIdHelper().measuresPhi(id)) || (m_idHelperSvc->isTgc(id) && m_idHelperSvc->tgcIdHelper().isStrip(id))
        || (m_idHelperSvc->issTgc(id) && m_idHelperSvc->stgcIdHelper().measuresPhi(id) ) ){
      if (!firstphi1) firstphi1=rot;
      lastphi1=rot;
    }
  }
  for (int i=0;i<(int)myseg2->numberOfMeasurementBases();i++){
    const Trk::RIO_OnTrack *rot=dynamic_cast<const Trk::RIO_OnTrack *>(myseg2->measurement(i));
    if (!rot){
      const Trk::CompetingRIOsOnTrack *crot=dynamic_cast<const Trk::CompetingRIOsOnTrack *>(myseg2->measurement(i));
      if (crot) rot=&crot->rioOnTrack(0);
    }
    if (!rot) continue;
    Identifier id=rot->identify();
    if ((m_idHelperSvc->isRpc(id) && m_idHelperSvc->rpcIdHelper().measuresPhi(id)) || (m_idHelperSvc->isCsc(id) && m_idHelperSvc->cscIdHelper().measuresPhi(id)) || (m_idHelperSvc->isTgc(id) && m_idHelperSvc->tgcIdHelper().isStrip(id))
        || (m_idHelperSvc->issTgc(id) && m_idHelperSvc->stgcIdHelper().measuresPhi(id) ) ){
      if (!firstphi2) firstphi2=rot;
      lastphi2=rot;
    }
  }
  bool flip = false;
  if (firstphi1) dist1=std::abs((firstphi1->globalPosition()-lastphi1->globalPosition()).dot(myseg1->globalDirection()));
  if (firstphi2) dist2=std::abs((firstphi2->globalPosition()-lastphi2->globalPosition()).dot(myseg2->globalDirection()));
  if (dist2>dist1) {
    flip = true;
    bestseg=myseg2;
    worstseg=myseg1;
  }
 
  for (int itry=0;itry<2;itry++){
 
    if(itry==1) {
// retry with other as best segmt segment
      if(!flip) {
        bestseg = myseg2;
        worstseg=myseg1;
      } else {
        bestseg = myseg1;
        worstseg=myseg2;
      }
    }
 
    signedMomentum =-.3e3*fieldintegral/deltatheta;
    if(std::abs(signedMomentum)<1000.) signedMomentum = 1e6;
    ATH_MSG_DEBUG("integral: " << fieldintegral << " deltatheta: " << deltatheta << " signedmomentum : " << signedMomentum);
    double residual = 9999.;
    double resi[4],qoverp[4];
    for (int i=0;i<4;i++){
      std::optional<Trk::TransportJacobian> jac{};
      Trk::AtaPlane startpar(bestseg->globalPosition(),bestseg->globalDirection().phi(),
                 bestseg->globalDirection().theta(),1/signedMomentum,bestseg->associatedSurface());
      auto par=m_propagator->propagateParameters(
        ctx, startpar,worstseg->associatedSurface(),
        (bestseg==myseg1) ? Trk::alongMomentum : Trk::oppositeMomentum,false,
        Trk::MagneticFieldProperties(Trk::FullField),jac,Trk::nonInteracting);
      ATH_MSG_DEBUG("par: " << par.get() << " jac: " << *jac );
      if (par && jac && (*jac)(1,4)!=0){
        residual = worstseg->localParameters()[Trk::locY] - par->parameters()[Trk::locY];
        resi[i]   = residual;
        qoverp[i] = 1/signedMomentum;
// update qoverp
        double delta_qoverp=residual/(*jac)(1,4);
        double der_simple = -10.*(bestseg->globalPosition()-worstseg->globalPosition()).mag()/(.3*fieldintegral);
        if(bestseg->globalDirection().z()<0) der_simple = - der_simple;
        if(i>0) {
          if(qoverp[i]!=qoverp[i-1]) {
            double derivative = -(resi[i]-resi[i-1])/(qoverp[i]-qoverp[i-1]);
            ATH_MSG_DEBUG(" numerical derivative " << derivative << " derivative from track " << (*jac)(1,4) << " der_simple " << der_simple);
            if(std::abs(derivative)>std::abs((*jac)(1,4))) {
              ATH_MSG_DEBUG(" use numerical derivative " << derivative << " derivative from track " << (*jac)(1,4));
              delta_qoverp = residual/derivative;
            }
          }
        } else {
          if(std::abs(der_simple)>std::abs((*jac)(1,4))) {
            ATH_MSG_DEBUG(" use simple numerical derivative " << der_simple << " derivative from track " << (*jac)(1,4));
            delta_qoverp = residual/der_simple;
          }
        }
        ATH_MSG_DEBUG("residual: " << residual << " jac " << (*jac)(1,4) << " signedmomentum: " << signedMomentum << " delta_qoverp " << delta_qoverp);
        double signedMomentum_updated = signedMomentum/(1+signedMomentum*delta_qoverp);
        if(std::abs(signedMomentum_updated)<1000.) {
          ATH_MSG_DEBUG("Too low signed momentum " << signedMomentum_updated );
//      protect against too low momenta as propagation will fail
          signedMomentum = signedMomentum_updated>0? 1000.:-1000;
        } else {
// do not change momentum beyond last iteration
          if(i<3) signedMomentum = signedMomentum_updated;
        }
        //delete par;
        if (std::abs(residual)<1) break;
      }
    }
    if(std::abs(residual)>10.) {
       ATH_MSG_DEBUG("NOT converged residual: " << residual << " itry " << itry);
       if(itry==1) ATH_MSG_DEBUG("NOT converged residual after two trials ");
    } else break;
  }
}

fitMomentum2Segments_old()

void MuonSegmentMomentumFromField::fitMomentum2Segments_old ( const EventContext & ctx, const Muon::MuonSegment * segment1, const Muon::MuonSegment * segment2, double & signedMomentum ) const

virtual

Estimate signed momentum for two segments by fitting 2 segments to one approximate track model

Definition at line 277 of file MuonSegmentMomentumFromField.cxx.

{

 
  ATH_MSG_VERBOSE(" Executing MuonSegmentMomentumTool  fitMomentum2Segments ");
 
  const Muon::MuonSegment* myseg1=segment1,*myseg2=segment2;
  if (myseg1->globalDirection().dot(myseg2->globalPosition()-myseg1->globalPosition())<0) {
    myseg1=segment2;
    myseg2=segment1;
  }
  double fieldintegral=fieldIntegralEstimate(ctx, myseg1,myseg2);
  double theta1=myseg1->globalDirection().theta();
  double theta2=myseg2->globalDirection().theta();
  double phi1=myseg1->globalDirection().phi();
  double phi2=myseg2->globalDirection().phi();
  double deltaphi=std::abs(phi2-phi1);
  double deltatheta=99999999;
  if (std::abs(deltaphi-2*M_PI)<deltaphi) deltaphi=std::abs(deltaphi-2*M_PI);
  if (deltaphi<M_PI/2) deltatheta=theta2-theta1;
  else {
    if (theta1>M_PI/2) deltatheta=2*M_PI-theta2-theta1;
    else deltatheta=-theta1-theta2;
  }
  double dist1=-1,dist2=-1;
  const Trk::RIO_OnTrack *firstphi1=nullptr,*lastphi1=nullptr,*firstphi2=nullptr,*lastphi2=nullptr;
 
  const Muon::MuonSegment *bestseg=myseg1,*worstseg=myseg2;
  for (int i=0;i<(int)myseg1->numberOfMeasurementBases();i++){
    const Trk::RIO_OnTrack *rot=dynamic_cast<const Trk::RIO_OnTrack *>(myseg1->measurement(i));
    if (!rot){
      const Trk::CompetingRIOsOnTrack *crot=dynamic_cast<const Trk::CompetingRIOsOnTrack *>(myseg1->measurement(i));
      if (crot) rot=&crot->rioOnTrack(0);
    }
    if (!rot) continue;
    Identifier id=rot->identify();
 
    if ((m_idHelperSvc->isRpc(id) && m_idHelperSvc->rpcIdHelper().measuresPhi(id)) || (m_idHelperSvc->isCsc(id) && m_idHelperSvc->cscIdHelper().measuresPhi(id)) ||
    (m_idHelperSvc->isTgc(id) && m_idHelperSvc->tgcIdHelper().isStrip(id))){
      if (!firstphi1) firstphi1=rot;
      lastphi1=rot;
    }
  }
  for (int i=0;i<(int)myseg2->numberOfMeasurementBases();i++){
    const Trk::RIO_OnTrack *rot=dynamic_cast<const Trk::RIO_OnTrack *>(myseg2->measurement(i));
    if (!rot){
      const Trk::CompetingRIOsOnTrack *crot=dynamic_cast<const Trk::CompetingRIOsOnTrack *>(myseg2->measurement(i));
      if (crot) rot=&crot->rioOnTrack(0);
    }
    if (!rot) continue;
    Identifier id=rot->identify();
    if ((m_idHelperSvc->isRpc(id) && m_idHelperSvc->rpcIdHelper().measuresPhi(id)) || (m_idHelperSvc->isCsc(id) && m_idHelperSvc->cscIdHelper().measuresPhi(id)) ||
    (m_idHelperSvc->isTgc(id) && m_idHelperSvc->tgcIdHelper().isStrip(id))){
      if (!firstphi2) firstphi2=rot;
      lastphi2=rot;
    }
  }
 
  if (firstphi1) dist1=std::abs((firstphi1->globalPosition()-lastphi1->globalPosition()).dot(myseg1->globalDirection()));
  if (firstphi2) dist2=std::abs((firstphi2->globalPosition()-lastphi2->globalPosition()).dot(myseg2->globalDirection()));
  if (dist2>dist1) {
    bestseg=myseg2;
    worstseg=myseg1;
  }
  signedMomentum =-.3e3*fieldintegral/deltatheta;
  ATH_MSG_DEBUG("integral: " << fieldintegral << " deltatheta: " << deltatheta << " signedmomentum : " << signedMomentum);
  for (int i=0;i<3;i++){
    Trk::AtaPlane startpar(bestseg->globalPosition(),bestseg->globalDirection().phi(),bestseg->globalDirection().theta(),
               1/signedMomentum,bestseg->associatedSurface());
    std::optional<Trk::TransportJacobian> jac{};
    auto par=m_propagator->propagateParameters(
      ctx,startpar,worstseg->associatedSurface(),
      (bestseg==myseg1) ? Trk::alongMomentum : Trk::oppositeMomentum,false,
      Trk::MagneticFieldProperties(Trk::FullField),jac,Trk::nonInteracting);
    if (par && jac && (*jac)(1,4)!=0){
      double residual=worstseg->localParameters()[Trk::locY] - par->parameters()[Trk::locY];
      double delta_qoverp=residual/(*jac)(1,4);
      signedMomentum=1/(1/signedMomentum+delta_qoverp);
      ATH_MSG_DEBUG("residual: " << residual << " jac " << (*jac)(1,4) << " dp " << delta_qoverp << " signedmomentum: " << signedMomentum);
     // delete par;
      if (std::abs(residual)<1) break;
    }
  }
}

fitMomentumVectorSegments()

void MuonSegmentMomentumFromField::fitMomentumVectorSegments ( const EventContext & ctx, const std::vector< const Muon::MuonSegment * > & segments, double & signedMomentum ) const

virtual

fits a momentum to a vector of segments

Estimate signed momentum from vector of MDT/CSC segments using fit to pairs of segments

Implements Muon::IMuonSegmentMomentumEstimator.

Definition at line 38 of file MuonSegmentMomentumFromField.cxx.

{

 
  ATH_MSG_VERBOSE(" Executing MuonSegmentMomentumTool  fitMomentumVectorSegments ");
  ATH_MSG_DEBUG(" fitMomentumVectorSegments " << segments.size() << " segments " );
 
  std::vector<const Muon::MuonSegment*>::const_iterator it = segments.begin();
  std::vector<const Muon::MuonSegment*>::const_iterator it2 = segments.begin();
  std::vector<const Muon::MuonSegment*>::const_iterator it_end = segments.end();
 
  ++it2;
  double maxintegral=0;
  while (it2!=it_end){
    double integral= m_doOld ? fieldIntegralEstimate_old(ctx,*it,*it2) : fieldIntegralEstimate(ctx,*it,*it2);
    if (std::abs(integral)>maxintegral){
      maxintegral=std::abs(integral);
      if( m_doOld ) fitMomentum2Segments_old(ctx, *it, *it2, signedMomentum);
      else          fitMomentum2Segments(ctx, *it, *it2, signedMomentum);
    }
    ++it;
    ++it2;
  }
  ATH_MSG_DEBUG( " Estimated signed momentum " << signedMomentum );
}

initialize()

StatusCode MuonSegmentMomentumFromField::initialize ( )

virtual

to initiate private members

Definition at line 26 of file MuonSegmentMomentumFromField.cxx.

{
  ATH_MSG_VERBOSE(" MuonSegmentMomentumFromField::Initializing ");
  ATH_CHECK(AthAlgTool::initialize());
  ATH_CHECK(m_propagator.retrieve());
  ATH_CHECK(m_navigator.retrieve());
  ATH_CHECK(m_idHelperSvc.retrieve());
  ATH_CHECK(m_fieldCondObjInputKey.initialize());
  ATH_MSG_VERBOSE("End of Initializing");
  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 & Muon::IMuonSegmentMomentumEstimator::interfaceID ( )

inlinestaticinherited

Definition at line 29 of file IMuonSegmentMomentumEstimator.h.

{ return IID_IMuonSegmentMomentumEstimator; }

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);
  }

operator=()

MuonSegmentMomentumFromField & MuonSegmentMomentumFromField::operator= ( const MuonSegmentMomentumFromField & )

delete

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();
  }

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_doOld

Gaudi::Property<bool> MuonSegmentMomentumFromField::m_doOld {this, "DoOld", false, "Use old fitMomentum2Segments"}

private

Definition at line 50 of file MuonSegmentMomentumFromField.h.

{this, "DoOld", false, "Use old fitMomentum2Segments"};

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_fieldCondObjInputKey

SG::ReadCondHandleKey<AtlasFieldCacheCondObj> MuonSegmentMomentumFromField::m_fieldCondObjInputKey {this, "AtlasFieldCacheCondObj", "fieldCondObj"}

private

Definition at line 48 of file MuonSegmentMomentumFromField.h.

{this, "AtlasFieldCacheCondObj", "fieldCondObj"};

m_idHelperSvc

ServiceHandle<Muon::IMuonIdHelperSvc> MuonSegmentMomentumFromField::m_idHelperSvc {this, "MuonIdHelperSvc", "Muon::MuonIdHelperSvc/MuonIdHelperSvc"}

private

Definition at line 47 of file MuonSegmentMomentumFromField.h.

{this, "MuonIdHelperSvc", "Muon::MuonIdHelperSvc/MuonIdHelperSvc"};

m_navigator

ToolHandle<Trk::INavigator> MuonSegmentMomentumFromField::m_navigator

private

Initial value:

{this, "NavigatorTool",
                                          "Trk::Navigator/MuonNavigator"}

Definition at line 45 of file MuonSegmentMomentumFromField.h.

                                                  {this, "NavigatorTool",
                                          "Trk::Navigator/MuonNavigator"};

m_propagator

ToolHandle<Trk::IPropagator> MuonSegmentMomentumFromField::m_propagator

private

Initial value:

{this, "PropagatorTool", 
                                          "Trk::STEP_Propagator/MuonPropagator"}

Definition at line 43 of file MuonSegmentMomentumFromField.h.

                                                  {this, "PropagatorTool", 
                                          "Trk::STEP_Propagator/MuonPropagator"};  

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:

• MuonSegmentMomentumFromField.h
• MuonSegmentMomentumFromField.cxx