MuonDT2ChamberResidual Class Reference

#include <MuonDT2ChamberResidual.h>

Inheritance diagram for MuonDT2ChamberResidual:

List of all members.

Public Member Functions
virtual void	addResidual (const TrajectoryStateOnSurface *tsos, const TransientTrackingRecHit *hit)
	MuonDT2ChamberResidual (edm::ESHandle< GlobalTrackingGeometry > globalGeometry, AlignableNavigator *navigator, DetId chamberId, AlignableDetOrUnitPtr chamberAlignable)
virtual void	setSegmentResidual (const reco::MuonChamberMatch *, const reco::MuonSegmentMatch *)

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Detailed Description

Implementation of muon chamber residuals for transverse DT layers

Id:

MuonDT2ChamberResidual.h,v 1.3 2011/10/12 23:40:24 khotilov Exp

Definition at line 13 of file MuonDT2ChamberResidual.h.

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Constructor & Destructor Documentation

MuonDT2ChamberResidual::MuonDT2ChamberResidual	(	edm::ESHandle< GlobalTrackingGeometry >	globalGeometry,
		AlignableNavigator *	navigator,
		DetId	chamberId,
		AlignableDetOrUnitPtr	chamberAlignable
	)

Definition at line 7 of file MuonDT2ChamberResidual.cc.

References MuonChamberResidual::kDT2, MuonChamberResidual::m_chamberId, MuonChamberResidual::m_globalGeometry, MuonChamberResidual::m_sign, and MuonChamberResidual::m_type.

  : MuonHitsChamberResidual(globalGeometry, navigator, chamberId, chamberAlignable)
{
  m_type = MuonChamberResidual::kDT2; 
  align::GlobalVector zDirection(0., 0., 1.);
  m_sign = m_globalGeometry->idToDet(m_chamberId)->toLocal(zDirection).y() > 0. ? 1. : -1.; 
}

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Member Function Documentation

void MuonDT2ChamberResidual::addResidual	(	const TrajectoryStateOnSurface *	tsos,
		const TransientTrackingRecHit *	hit
	)		[virtual]

Implements MuonChamberResidual.

Definition at line 16 of file MuonDT2ChamberResidual.cc.

References TrackingRecHit::geographicalId(), TrackingRecHit::localPosition(), TrajectoryStateOnSurface::localPosition(), TrackingRecHit::localPositionError(), MuonChamberResidual::m_chamberAlignable, MuonChamberResidual::m_globalGeometry, MuonHitsChamberResidual::m_hitx_1, MuonHitsChamberResidual::m_hitx_x, MuonHitsChamberResidual::m_hitx_xx, MuonHitsChamberResidual::m_hitx_xy, MuonHitsChamberResidual::m_hitx_y, MuonHitsChamberResidual::m_hity_1, MuonHitsChamberResidual::m_hity_x, MuonHitsChamberResidual::m_hity_xx, MuonHitsChamberResidual::m_hity_xy, MuonHitsChamberResidual::m_hity_y, MuonChamberResidual::m_individual_weight, MuonChamberResidual::m_individual_x, MuonChamberResidual::m_individual_y, MuonChamberResidual::m_localIDs, MuonChamberResidual::m_localResids, MuonChamberResidual::m_numHits, MuonHitsChamberResidual::m_residual_1, MuonHitsChamberResidual::m_residual_x, MuonHitsChamberResidual::m_residual_xx, MuonHitsChamberResidual::m_residual_xy, MuonHitsChamberResidual::m_residual_y, MuonHitsChamberResidual::m_trackx_1, MuonHitsChamberResidual::m_trackx_x, MuonHitsChamberResidual::m_trackx_xx, MuonHitsChamberResidual::m_trackx_xy, MuonHitsChamberResidual::m_trackx_y, MuonHitsChamberResidual::m_tracky_1, MuonHitsChamberResidual::m_tracky_x, MuonHitsChamberResidual::m_tracky_xx, MuonHitsChamberResidual::m_tracky_xy, MuonHitsChamberResidual::m_tracky_y, MuonChamberResidual::residual(), MuonHitsChamberResidual::segment_fit(), CommonMethods::weight(), PV3DBase< T, PVType, FrameType >::x(), LocalError::xx(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

{
  DetId id = hit->geographicalId();

  align::LocalPoint hitChamberPos = m_chamberAlignable->surface().toLocal(m_globalGeometry->idToDet(id)->toGlobal(hit->localPosition()));
  align::LocalPoint tsosChamberPos = m_chamberAlignable->surface().toLocal(m_globalGeometry->idToDet(id)->toGlobal(tsos->localPosition()));

  double residual = tsosChamberPos.y() - hitChamberPos.y();  // residual is track minus hit
  double weight = 1. / hit->localPositionError().xx();  // weight linear fit by hit-only local error (yes, xx: layer x is chamber y)
  double layerPosition = tsosChamberPos.z();  // the layer's position in the chamber's coordinate system
  double layerHitPos = hitChamberPos.z();

  m_numHits++;

  // "x" is the layerPosition, "y" is the residual (this is a linear fit to residual versus layerPosition)
  m_residual_1 += weight;
  m_residual_x += weight * layerPosition;
  m_residual_y += weight * residual;
  m_residual_xx += weight * layerPosition * layerPosition;
  m_residual_xy += weight * layerPosition * residual;

  // "x" is the layerPosition, "y" is chamberx (this is a linear fit to chamberx versus layerPosition)
  m_trackx_1 += weight;
  m_trackx_x += weight * layerPosition;
  m_trackx_y += weight * tsosChamberPos.x();
  m_trackx_xx += weight * layerPosition * layerPosition;
  m_trackx_xy += weight * layerPosition * tsosChamberPos.x();

  // "x" is the layerPosition, "y" is chambery (this is a linear fit to chambery versus layerPosition)
  m_tracky_1 += weight;
  m_tracky_x += weight * layerPosition;
  m_tracky_y += weight * tsosChamberPos.y();
  m_tracky_xx += weight * layerPosition * layerPosition;
  m_tracky_xy += weight * layerPosition * tsosChamberPos.y();

  m_hitx_1 += weight;
  m_hitx_x += weight * layerHitPos;
  m_hitx_y += weight * hitChamberPos.x();
  m_hitx_xx += weight * layerHitPos * layerHitPos;
  m_hitx_xy += weight * layerHitPos * hitChamberPos.x();

  m_hity_1 += weight;
  m_hity_x += weight * layerHitPos;
  m_hity_y += weight * hitChamberPos.y();
  m_hity_xx += weight * layerHitPos * layerHitPos;
  m_hity_xy += weight * layerHitPos * hitChamberPos.y();

  m_localIDs.push_back(id);
  m_localResids.push_back(tsos->localPosition().x() - hit->localPosition().x());
  m_individual_x.push_back(layerPosition);
  m_individual_y.push_back(residual);
  m_individual_weight.push_back(weight);
  
  if (m_numHits>1) segment_fit();
}

virtual void MuonDT2ChamberResidual::setSegmentResidual	(	const reco::MuonChamberMatch *	,
		const reco::MuonSegmentMatch *
	)		[inline, virtual]

Implements MuonChamberResidual.

Definition at line 24 of file MuonDT2ChamberResidual.h.

{}