#include <ExpertTrackTimeFromSummaryTool.h>

Inheritance diagram for HGTD::ExpertTrackTimeFromSummaryTool:

Collaboration diagram for HGTD::ExpertTrackTimeFromSummaryTool:

Public Member Functions
	ExpertTrackTimeFromSummaryTool (const std::string &, const std::string &, const IInterface *)
virtual	~ExpertTrackTimeFromSummaryTool ()=default
virtual StatusCode	initialize () override final
virtual bool	expertHasTime (const xAOD::TrackParticle &track_particle) const override final
virtual float	expertTime (const xAOD::TrackParticle &track_particle) const override final
virtual float	expertTimeRes (const xAOD::TrackParticle &track_particle) const override final
virtual float	fracPrimaryHits (const xAOD::TrackParticle &track_particle) const override final
virtual int	numberPotentialPrimaryHits (const xAOD::TrackParticle &track_particle) const override final

Private Member Functions
int	nHits (const xAOD::TrackParticle &track_particle) const
	Number of HGTD hits that survived the time consistency check, decoded from the HGTD_summaryinfo bitfield.
int	nPrimaryHits (const xAOD::TrackParticle &track_particle) const
	Number of HGTD hits associated to a primary particle, decoded from the HGTD_summaryinfo bitfield.

Private Attributes
Gaudi::Property< bool >	m_do_last_hit
Gaudi::Property< bool >	m_do_min_nhits
Gaudi::Property< float >	m_min_eta {this, "MinEta", 3.5, "Default value"}
Gaudi::Property< float >	m_max_eta {this, "MaxEta", 3.9, "Default value"}
SG::ConstAccessor< uint8_t >	m_acc_has_valid_time {"hasValidTime"}
SG::ConstAccessor< uint32_t >	m_acc_summary_info {"HGTD_summaryinfo"}
SG::ConstAccessor< float >	m_acc_time_resolution {"timeResolution"}
SG::ConstAccessor< std::vector< bool > >	m_acc_perLayer_expectCluster
const short	m_comp_ptrn_sft = 8
const short	m_primes_ptrn_sft = 16
const short	m_holes_ptrn_sft = 12

Detailed Description

Definition at line 34 of file ExpertTrackTimeFromSummaryTool.h.

Constructor & Destructor Documentation

◆ ExpertTrackTimeFromSummaryTool()

ExpertTrackTimeFromSummaryTool::ExpertTrackTimeFromSummaryTool	(	const std::string &	t,
		const std::string &	n,
		const IInterface *	p )

Definition at line 17 of file ExpertTrackTimeFromSummaryTool.cxx.

19 : base_class(t, n, p) {}

◆ ~ExpertTrackTimeFromSummaryTool()

virtual HGTD::ExpertTrackTimeFromSummaryTool::~ExpertTrackTimeFromSummaryTool ( )

virtualdefault

Member Function Documentation

◆ expertHasTime()

bool ExpertTrackTimeFromSummaryTool::expertHasTime ( const xAOD::TrackParticle & track_particle ) const

finaloverridevirtual

Definition at line 26 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  // The validTime decoration checks for time consistency and
  // extensions with chi2 bellow threashold
  if (m_acc_has_valid_time(track_particle) != 1) {
    return false;
  }
 
  if (m_do_min_nhits and (this->nHits(track_particle) <= 1)) {
    // if a 2 hit minimum is required, reject the case of a single associated
    // hit if the track falls into the defined eta region
    float fabs_eta = std::abs(track_particle.eta());
    if (fabs_eta > m_min_eta and fabs_eta < m_max_eta) {
      return false;
    }
  }
 
  // Check if the last measurement of ITk track is close to HGTD
  bool last_hit_not_on_last_surface =
      m_acc_summary_info(track_particle) & (1 << m_holes_ptrn_sft);
  if (m_do_last_hit and last_hit_not_on_last_surface) {
    return false;
  }
 
  return true;
}

◆ expertTime()

float ExpertTrackTimeFromSummaryTool::expertTime ( const xAOD::TrackParticle & track_particle ) const

finaloverridevirtual

Definition at line 53 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  return track_particle.time();
}

◆ expertTimeRes()

float ExpertTrackTimeFromSummaryTool::expertTimeRes ( const xAOD::TrackParticle & track_particle ) const

finaloverridevirtual

Definition at line 58 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  return m_acc_time_resolution(track_particle);
}

◆ fracPrimaryHits()

float ExpertTrackTimeFromSummaryTool::fracPrimaryHits ( const xAOD::TrackParticle & track_particle ) const

finaloverridevirtual

Definition at line 79 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  if (not expertHasTime(track_particle)) {
    ATH_MSG_WARNING("[ExpertTrackTimeFromSummaryTool::fracPrimaryHits]"
                    "No available hits, returning -999.");
    return -999.;
  }
  short n_hits = this->nHits(track_particle);
  if (n_hits > 0) {
    return (float)this->nPrimaryHits(track_particle) / (float)n_hits;
  } else {
    return 0;
  }
}

◆ initialize()

StatusCode ExpertTrackTimeFromSummaryTool::initialize ( )

finaloverridevirtual

Definition at line 21 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                      {
  ATH_CHECK(AthAlgTool::initialize());
  return StatusCode::SUCCESS;
}

◆ nHits()

int ExpertTrackTimeFromSummaryTool::nHits ( const xAOD::TrackParticle & track_particle ) const

private

Number of HGTD hits that survived the time consistency check, decoded from the HGTD_summaryinfo bitfield.

Kept private on purpose: a caller that needs a hit count should declare the dependency on the decoration it wants to read itself instead of going through the tool.

Definition at line 63 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  // Get 4-bit word that indicate valid hits after time consistency check
  uint8_t n_comp =
      (m_acc_summary_info(track_particle) >> m_comp_ptrn_sft) & 0x0F;
  return std::popcount(n_comp);
}

◆ nPrimaryHits()

int ExpertTrackTimeFromSummaryTool::nPrimaryHits ( const xAOD::TrackParticle & track_particle ) const

private

Number of HGTD hits associated to a primary particle, decoded from the HGTD_summaryinfo bitfield.

Private for the same reason as nHits.

Definition at line 71 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  // Get 4-bit word that indicate hits associated with primary particles
  uint8_t n_primes =
      (m_acc_summary_info(track_particle) >> m_primes_ptrn_sft) & 0x0F;
  return std::popcount(n_primes);
}

◆ numberPotentialPrimaryHits()

int ExpertTrackTimeFromSummaryTool::numberPotentialPrimaryHits ( const xAOD::TrackParticle & track_particle ) const

finaloverridevirtual

Definition at line 94 of file ExpertTrackTimeFromSummaryTool.cxx.

                                                   {
  const std::vector<bool>& expected_hits =
      m_acc_perLayer_expectCluster(track_particle);
  return std::count(expected_hits.begin(), expected_hits.end(), true);
}

Member Data Documentation

◆ m_acc_has_valid_time

SG::ConstAccessor<uint8_t> HGTD::ExpertTrackTimeFromSummaryTool::m_acc_has_valid_time {"hasValidTime"}

private

Definition at line 88 of file ExpertTrackTimeFromSummaryTool.h.

88{"hasValidTime"};

◆ m_acc_perLayer_expectCluster

SG::ConstAccessor<std::vector<bool> > HGTD::ExpertTrackTimeFromSummaryTool::m_acc_perLayer_expectCluster

private

Initial value:

{

"HGTD_primary_expected"}

Definition at line 91 of file ExpertTrackTimeFromSummaryTool.h.

91 {

92 "HGTD_primary_expected"};

◆ m_acc_summary_info

SG::ConstAccessor<uint32_t> HGTD::ExpertTrackTimeFromSummaryTool::m_acc_summary_info {"HGTD_summaryinfo"}

private

Definition at line 89 of file ExpertTrackTimeFromSummaryTool.h.

89{"HGTD_summaryinfo"};

◆ m_acc_time_resolution

SG::ConstAccessor<float> HGTD::ExpertTrackTimeFromSummaryTool::m_acc_time_resolution {"timeResolution"}

private

Definition at line 90 of file ExpertTrackTimeFromSummaryTool.h.

90{"timeResolution"};

◆ m_comp_ptrn_sft

const short HGTD::ExpertTrackTimeFromSummaryTool::m_comp_ptrn_sft = 8

private

Definition at line 95 of file ExpertTrackTimeFromSummaryTool.h.

◆ m_do_last_hit

Gaudi::Property<bool> HGTD::ExpertTrackTimeFromSummaryTool::m_do_last_hit

private

Initial value:

{this, "UseLastHitCut", true,

"Default value"}

Definition at line 81 of file ExpertTrackTimeFromSummaryTool.h.

81 {this, "UseLastHitCut", true,

82 "Default value"};

◆ m_do_min_nhits

Gaudi::Property<bool> HGTD::ExpertTrackTimeFromSummaryTool::m_do_min_nhits

private

Initial value:

{this, "UseMinNHits", true,

"Default value"}

Definition at line 83 of file ExpertTrackTimeFromSummaryTool.h.

83 {this, "UseMinNHits", true,

84 "Default value"};

◆ m_holes_ptrn_sft

const short HGTD::ExpertTrackTimeFromSummaryTool::m_holes_ptrn_sft = 12

private

Definition at line 97 of file ExpertTrackTimeFromSummaryTool.h.

◆ m_max_eta

Gaudi::Property<float> HGTD::ExpertTrackTimeFromSummaryTool::m_max_eta {this, "MaxEta", 3.9, "Default value"}

private

Definition at line 86 of file ExpertTrackTimeFromSummaryTool.h.

86{this, "MaxEta", 3.9, "Default value"};

◆ m_min_eta

Gaudi::Property<float> HGTD::ExpertTrackTimeFromSummaryTool::m_min_eta {this, "MinEta", 3.5, "Default value"}

private

Definition at line 85 of file ExpertTrackTimeFromSummaryTool.h.

85{this, "MinEta", 3.5, "Default value"};

◆ m_primes_ptrn_sft

const short HGTD::ExpertTrackTimeFromSummaryTool::m_primes_ptrn_sft = 16

private

Definition at line 96 of file ExpertTrackTimeFromSummaryTool.h.

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

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ExpertTrackTimeFromSummaryTool()

◆ ~ExpertTrackTimeFromSummaryTool()

Member Function Documentation

◆ expertHasTime()

◆ expertTime()

◆ expertTimeRes()

◆ fracPrimaryHits()

◆ initialize()

◆ nHits()

◆ nPrimaryHits()

◆ numberPotentialPrimaryHits()

Member Data Documentation

◆ m_acc_has_valid_time

◆ m_acc_perLayer_expectCluster

◆ m_acc_summary_info

◆ m_acc_time_resolution

◆ m_comp_ptrn_sft

◆ m_do_last_hit

◆ m_do_min_nhits

◆ m_holes_ptrn_sft

◆ m_max_eta

◆ m_min_eta

◆ m_primes_ptrn_sft