#include <Phase2StripCPE.h>

Inheritance diagram for Phase2StripCPE:

Classes
struct	Param

Public Types
using	Phase2TrackerGeomDetUnit = PixelGeomDetUnit

using	Phase2TrackerTopology = PixelTopology

Public Types inherited from ClusterParameterEstimator< Phase2TrackerCluster1D >
typedef std::pair< LocalPoint, LocalError >	LocalValues

typedef std::vector< LocalValues >	VLocalValues

Public Member Functions
LocalVector	driftDirection (const Phase2TrackerGeomDetUnit &det) const

LocalValues	localParameters (const Phase2TrackerCluster1D &cluster, const GeomDetUnit &det) const override

	Phase2StripCPE (edm::ParameterSet &conf, const MagneticField &, const TrackerGeometry &)

Public Member Functions inherited from ClusterParameterEstimator< Phase2TrackerCluster1D >
virtual void	clearParameters () const

virtual void	enterLocalParameters (unsigned int id, std::pair< int, int > &row_col, LocalValues pos_err_info) const

virtual void	enterLocalParameters (uint32_t id, uint16_t firstStrip, LocalValues pos_err_info) const

virtual LocalValues	localParameters (const Phase2TrackerCluster1D &cluster, const GeomDetUnit &gd, const LocalTrajectoryParameters &) const

virtual LocalValues	localParameters (const Phase2TrackerCluster1D &cluster, const GeomDetUnit &gd, const TrajectoryStateOnSurface &tsos) const

virtual VLocalValues	localParametersV (const Phase2TrackerCluster1D &cluster, const GeomDetUnit &gd) const

virtual VLocalValues	localParametersV (const Phase2TrackerCluster1D &cluster, const GeomDetUnit &gd, const TrajectoryStateOnSurface &tsos) const

virtual	~ClusterParameterEstimator ()

Private Member Functions
void	fillParam ()

Private Attributes
const TrackerGeometry &	geom_

unsigned int	m_off

std::vector< Param >	m_Params

const MagneticField &	magfield_

float	tanLorentzAnglePerTesla_

bool	use_LorentzAngle_DB_

Detailed Description

Definition at line 13 of file Phase2StripCPE.h.

Member Typedef Documentation

using Phase2StripCPE::Phase2TrackerGeomDetUnit = PixelGeomDetUnit

Definition at line 16 of file Phase2StripCPE.h.

using Phase2StripCPE::Phase2TrackerTopology = PixelTopology

Definition at line 17 of file Phase2StripCPE.h.

Constructor & Destructor Documentation

Phase2StripCPE::Phase2StripCPE	(	edm::ParameterSet &	conf,
		const MagneticField &	magf,
		const TrackerGeometry &	geom
	)

Definition at line 5 of file Phase2StripCPE.cc.

References Exception, fillParam(), edm::ParameterSet::getParameter(), tanLorentzAnglePerTesla_, and use_LorentzAngle_DB_.

     : magfield_(magf), geom_(geom), tanLorentzAnglePerTesla_(conf.getParameter<double>("TanLorentzAnglePerTesla")) {
   use_LorentzAngle_DB_ = conf.getParameter<bool>("LorentzAngle_DB");
   if (use_LorentzAngle_DB_) {
     throw cms::Exception("Lorentz Angle from DB not implemented yet");
     tanLorentzAnglePerTesla_ = 0;
     // old code: LorentzAngleMap_.getLorentzAngle(det->geographicalId().rawId());
   }
   fillParam();
 }

Member Function Documentation

LocalVector Phase2StripCPE::driftDirection ( const Phase2TrackerGeomDetUnit & det ) const

Definition at line 28 of file Phase2StripCPE.cc.

References MagneticField::inTesla(), magfield_, GloballyPositioned< T >::position(), GeomDet::surface(), tanLorentzAnglePerTesla_, toLocal(), PV3DBase< T, PVType, FrameType >::x(), and PV3DBase< T, PVType, FrameType >::y().

Referenced by fillParam().

                                                                                     {
   LocalVector lbfield = (det.surface()).toLocal(magfield_.inTesla(det.surface().position()));
 
   float dir_x = -tanLorentzAnglePerTesla_ * lbfield.y();
   float dir_y = tanLorentzAnglePerTesla_ * lbfield.x();
   float dir_z = 1.f;  // E field always in z direction
 
   return LocalVector(dir_x, dir_y, dir_z);
 }

void Phase2StripCPE::fillParam ( )

private

Definition at line 38 of file Phase2StripCPE.cc.

References Surface::bounds(), constexpr, TrackerGeometry::detUnits(), shallow::drift(), driftDirection(), geom_, mps_fire::i, GeomDet::index(), createfilelist::int, LogDebug, m_off, m_Params, TrackerGeometry::offsetDU(), AlCaHLTBitMon_ParallelJobs::p, GeomDet::specificSurface(), PixelGeomDetUnit::specificTopology(), Bounds::thickness(), Calorimetry_cff::thickness, and GeomDetEnumerators::tkDetEnum.

Referenced by Phase2StripCPE().

                                {
   // in phase 2 they are all pixel topologies...
   auto const& dus = geom_.detUnits();
   m_off = dus.size();
   // skip Barrel and Foward pixels...
   for (unsigned int i = 3; i < 7; ++i) {
     LogDebug("LookingForFirstPhase2OT") << " Subdetector " << i << " GeomDetEnumerator "
                                         << GeomDetEnumerators::tkDetEnum[i] << " offset "
                                         << geom_.offsetDU(GeomDetEnumerators::tkDetEnum[i]) << std::endl;
     if (geom_.offsetDU(GeomDetEnumerators::tkDetEnum[i]) != dus.size()) {
       if (geom_.offsetDU(GeomDetEnumerators::tkDetEnum[i]) < m_off)
         m_off = geom_.offsetDU(GeomDetEnumerators::tkDetEnum[i]);
     }
   }
   LogDebug("LookingForFirstPhase2OT") << " Chosen offset: " << m_off;
 
   m_Params.resize(dus.size() - m_off);
   // very very minimal, for sure it will need to expand...
   for (auto i = m_off; i != dus.size(); ++i) {
     auto& p = m_Params[i - m_off];
 
     const Phase2TrackerGeomDetUnit& det = (const Phase2TrackerGeomDetUnit&)(*dus[i]);
     assert(det.index() == int(i));
     p.topology = &det.specificTopology();
 
     auto pitch_x = p.topology->pitch().first;
     auto pitch_y = p.topology->pitch().second;
 
     // see https://github.com/cms-sw/cmssw/blob/CMSSW_8_1_X/RecoLocalTracker/SiStripRecHitConverter/src/StripCPE.cc
     auto thickness = det.specificSurface().bounds().thickness();
     auto drift = driftDirection(det) * thickness;
     auto lvec = drift + LocalVector(0, 0, -thickness);
     p.coveredStrips = lvec.x() / pitch_x;  // simplifies wrt Phase0 tracker because only rectangular modules
 
     constexpr float o12 = 1. / 12;
     p.localErr = LocalError(o12 * pitch_x * pitch_x, 0, o12 * pitch_y * pitch_y);  // e2_xx, e2_xy, e2_yy
   }
 }

Phase2StripCPE::LocalValues Phase2StripCPE::localParameters	(	const Phase2TrackerCluster1D &	cluster,
		const GeomDetUnit &	det
	)		const

overridevirtual

Implements ClusterParameterEstimator< Phase2TrackerCluster1D >.

Definition at line 16 of file Phase2StripCPE.cc.

References Phase2TrackerCluster1D::center(), Phase2TrackerCluster1D::column(), f, dqmMemoryStats::float, GeomDet::index(), m_off, m_Params, and AlCaHLTBitMon_ParallelJobs::p.

                                                                                               {
   auto const& p = m_Params[detunit.index() - m_off];
   auto const& topo = *p.topology;
   float ix = cluster.center() - 0.5f * p.coveredStrips;
   float iy = float(cluster.column()) + 0.5f;  // halfway the column
 
   LocalPoint lp(topo.localX(ix), topo.localY(iy), 0);  // x, y, z
 
   return std::make_pair(lp, p.localErr);
 }