FTF Namespace Reference

header for factorised IRoiDescriptor interface More...

Classes
class	BaseSpacePointFilter
class	LayerCalculator
class	RoI_Filter
class	SpacePointSelector
class	SpacePointShifter
class	SpacePointTransform

Functions
bool	isGoodTrackUTT (const Trk::Track *track, trackInfo &theTrackInfo, const float shift_x, const float shift_y, float trkcut_ptgev)
void	getBeamSpotShift (float &shift_x, float &shift_y, const InDet::BeamSpotData &beamSpotHandle)

Detailed Description

header for factorised IRoiDescriptor interface

Function Documentation

getBeamSpotShift()

void FTF::getBeamSpotShift	(	float &	shift_x,
		float &	shift_y,
		const InDet::BeamSpotData &	beamSpotHandle
	)

Definition at line 30 of file TrigInDetUtils.cxx.

                                                                                                  {
  Amg::Vector3D vertex = beamSpotHandle.beamPos();
  //ATH_MSG_VERBOSE("Beam spot position " << vertex);
  double xVTX = vertex.x();
  double yVTX = vertex.y();
  double zVTX = vertex.z();
  double tiltXZ = beamSpotHandle.beamTilt(0);
  double tiltYZ = beamSpotHandle.beamTilt(1);
  shift_x = xVTX - tiltXZ*zVTX;//correction for tilt
  shift_y = yVTX - tiltYZ*zVTX;//correction for tilt
  //ATH_MSG_VERBOSE("Beam center position:  " << shift_x <<"  "<< shift_y);
}

isGoodTrackUTT()

bool FTF::isGoodTrackUTT	(	const Trk::Track *	track,
		trackInfo &	theTrackInfo,
		const float	shift_x,
		const float	shift_y,
		float	trkcut_ptgev
	)

Definition at line 4 of file TrigInDetUtils.cxx.

                                                                                                                                     {
      static constexpr int   TRKCUT_N_HITS_INNER  = 1;
      static constexpr int   TRKCUT_N_HITS_PIX    = 2;
      static constexpr float TRKCUT_A0BEAM        = 2.5;
      static constexpr int   TRKCUT_N_HITS        = 4;
 
      if ( track->perigeeParameters()==nullptr ) return false;
      if ( track->trackSummary()==nullptr )  return false;
      theTrackInfo.n_hits_innermost = track->trackSummary()->get(Trk::SummaryType::numberOfInnermostPixelLayerHits);
      float n_hits_next_to_innermost = track->trackSummary()->get(Trk::SummaryType::numberOfNextToInnermostPixelLayerHits);
      theTrackInfo.n_hits_inner = theTrackInfo.n_hits_innermost + n_hits_next_to_innermost;
      theTrackInfo.n_hits_pix   = track->trackSummary()->get(Trk::SummaryType::numberOfPixelHits);
      theTrackInfo.n_hits_sct   = track->trackSummary()->get(Trk::SummaryType::numberOfSCTHits);
      if( theTrackInfo.n_hits_inner < TRKCUT_N_HITS_INNER )      return false;
      if( theTrackInfo.n_hits_pix < TRKCUT_N_HITS_PIX )          return false;
      if( (theTrackInfo.n_hits_pix+theTrackInfo.n_hits_sct) < TRKCUT_N_HITS ) return false;
      theTrackInfo.eta = track->perigeeParameters()->eta();
      theTrackInfo.ptGeV = track->perigeeParameters()->pT()/Gaudi::Units::GeV;
      if( theTrackInfo.ptGeV < trkcut_ptgev ) return false;
      float a0 = track->perigeeParameters()->parameters()[Trk::d0];
      theTrackInfo.phi0 = track->perigeeParameters()->parameters()[Trk::phi0];
      theTrackInfo.a0beam = a0 + shift_x*sin(theTrackInfo.phi0)-shift_y*cos(theTrackInfo.phi0);
      if( std::abs(theTrackInfo.a0beam) > TRKCUT_A0BEAM ) {return false;}
      return true;
}