DTTrigGeomUtils Class Reference

#include <DTTrigGeomUtils.h>

Public Member Functions
void	computeSCCoordinates (const DTRecSegment4D *track, int &scsec, float &x, float &xdir, float &y, float &ydir)
	Compute track coordinates with SC sector numbering. More...
	DTTrigGeomUtils (edm::ESHandle< DTGeometry > muonGeom, bool dirInDeg=true)
	Constructor. More...
bool	hasPosRF (int wh, int sec)
	Checks id the chamber has positive RF;. More...
void	phiRange (const DTChamberId &id, float &min, float &max, int &nbins, float step=15)
	Compute phi range in local chamber coordinates. More...
void	thetaRange (const DTChamberId &id, float &min, float &max, int &nbins, float step=15)
	Compute theta range in local chamber coordinates. More...
float	trigDir (const L1MuDTChambPhDigi *trig)
	Return local direction (trigger RF) for a given trigger primitive. More...
float	trigPos (const L1MuDTChambPhDigi *trig)
	Return local position (trigger RF) for a given trigger primitive. More...
void	trigToSeg (int st, float &x, float dir)
	Compute Trigger x coordinate in chamber RF. More...
virtual	~DTTrigGeomUtils ()
	Destructor. More...

Private Attributes
edm::ESHandle< DTGeometry >	muonGeom_
float	radToDeg_
float	xCenter_ [2]
float	zcn_ [4]

Detailed Description

Definition at line 21 of file DTTrigGeomUtils.h.

Constructor & Destructor Documentation

DTTrigGeomUtils()

DTTrigGeomUtils::DTTrigGeomUtils	(	edm::ESHandle< DTGeometry >	muonGeom,
		bool	dirInDeg = true
	)

Constructor.

Definition at line 30 of file DTTrigGeomUtils.cc.

                                                                             : muonGeom_(muonGeom) {
  radToDeg_ = dirInDeg ? 180. / Geom::pi() : 1;
 
  for (int ist = 1; ist <= 4; ++ist) {
    const DTChamberId chId(-2, ist, 4);
    const DTChamber* chamb = muonGeom_->chamber(chId);
    const DTSuperLayer* sl1 = chamb->superLayer(DTSuperLayerId(chId, 1));
    const DTSuperLayer* sl3 = chamb->superLayer(DTSuperLayerId(chId, 3));
    zcn_[ist - 1] =
        .5 * (chamb->surface().toLocal(sl1->position()).z() + chamb->surface().toLocal(sl3->position()).z());
  }
 
  const DTChamber* chamb = muonGeom_->chamber(DTChamberId(-2, 4, 13));
  const DTChamber* scchamb = muonGeom_->chamber(DTChamberId(-2, 4, 4));
  xCenter_[0] = scchamb->toLocal(chamb->position()).x() * .5;
  chamb = muonGeom_->chamber(DTChamberId(-2, 4, 14));
  scchamb = muonGeom_->chamber(DTChamberId(-2, 4, 10));
  xCenter_[1] = scchamb->toLocal(chamb->position()).x() * .5;
}

References DTGeometry::chamber(), muonGeom_, Geom::pi(), GeomDet::position(), radToDeg_, DTChamber::superLayer(), GeomDet::surface(), GeomDet::toLocal(), GloballyPositioned< T >::toLocal(), x, xCenter_, z, and zcn_.

~DTTrigGeomUtils()

DTTrigGeomUtils::~DTTrigGeomUtils ( )

virtual

Destructor.

Definition at line 50 of file DTTrigGeomUtils.cc.

{}

Member Function Documentation

computeSCCoordinates()

void DTTrigGeomUtils::computeSCCoordinates	(	const DTRecSegment4D *	track,
		int &	scsec,
		float &	x,
		float &	xdir,
		float &	y,
		float &	ydir
	)

Compute track coordinates with SC sector numbering.

Definition at line 52 of file DTTrigGeomUtils.cc.

                                                                                           {
  int sector = track->chamberId().sector();
  int station = track->chamberId().station();
  xdir = atan(track->localDirection().x() / track->localDirection().z()) * radToDeg_;
  ydir = atan(track->localDirection().y() / track->localDirection().z()) * radToDeg_;
 
  scsec = sector > 12 ? sector == 13 ? 4 : 10 : sector;
  float xcenter = (scsec == 4 || scsec == 10)
                      ? (sector - 12.9) / abs(sector - 12.9) * xCenter_[(sector == 10 || sector == 14)]
                      : 0.;
  x = track->localPosition().x() + xcenter * (station == 4);
  y = track->localPosition().y();
}

References funct::abs(), radToDeg_, relativeConstraints::station, HLT_FULL_cff::track, x, xCenter_, xdir, y, and ydir.

Referenced by DTLocalTriggerLutTask::analyze(), DTTriggerEfficiencyTask::analyze(), and DTLocalTriggerTask::runSegmentAnalysis().

hasPosRF()

bool DTTrigGeomUtils::hasPosRF ( int  wh, int  sec  )

inline

Checks id the chamber has positive RF;.

Definition at line 48 of file DTTrigGeomUtils.h.

{ return wh > 0 || (wh == 0 && sec % 4 > 1); };

Referenced by trigDir(), and trigPos().

phiRange()

void DTTrigGeomUtils::phiRange	(	const DTChamberId &	id,
		float &	min,
		float &	max,
		int &	nbins,
		float	step = 15
	)

Compute phi range in local chamber coordinates.

Definition at line 67 of file DTTrigGeomUtils.cc.

                                                                                                    {
  int station = id.station();
  int sector = id.sector();
 
  const DTLayer* layer = muonGeom_->layer(DTLayerId(id, 1, 1));
  const DTTopology& topo = layer->specificTopology();
  double range = topo.channels() * topo.cellWidth();
  min = -range * .5;
  max = range * .5;
 
  if (station == 4 && (sector == 4 || sector == 10)) {
    min = -range - 10;
    max = range + 10;
  }
  nbins = static_cast<int>((max - min) / step);
 
  return;
}

References DTTopology::cellWidth(), DTTopology::channels(), DTGeometry::layer(), phase1PixelTopology::layer, SiStripPI::max, min(), muonGeom_, LaserClient_cfi::nbins, FastTimerService_cff::range, and relativeConstraints::station.

Referenced by DTTriggerEfficiencyTask::bookChamberHistos(), DTLocalTriggerEfficiencyTest::bookChambHistos(), DTLocalTriggerTask::bookHistos(), and DTLocalTriggerBaseTask::bookHistos().

thetaRange()

void DTTrigGeomUtils::thetaRange	(	const DTChamberId &	id,
		float &	min,
		float &	max,
		int &	nbins,
		float	step = 15
	)

Compute theta range in local chamber coordinates.

Definition at line 86 of file DTTrigGeomUtils.cc.

                                                                                                      {
  const DTLayer* layer = muonGeom_->layer(DTLayerId(id, 2, 1));
  const DTTopology& topo = layer->specificTopology();
  double range = topo.channels() * topo.cellWidth();
  min = -range * .5;
  max = range * .5;
 
  nbins = static_cast<int>((max - min) / step);
 
  return;
}

References DTTopology::cellWidth(), DTTopology::channels(), DTGeometry::layer(), phase1PixelTopology::layer, SiStripPI::max, min(), muonGeom_, LaserClient_cfi::nbins, and FastTimerService_cff::range.

Referenced by DTLocalTriggerEfficiencyTest::bookChambHistos(), and DTLocalTriggerTask::bookHistos().

trigDir()

float DTTrigGeomUtils::trigDir

(

const L1MuDTChambPhDigi *

trig

)

Return local direction (trigger RF) for a given trigger primitive.

Definition at line 138 of file DTTrigGeomUtils.cc.

                                                            {
  int wh = trig->whNum();
  int sec = trig->scNum() + 1;
  int phi = trig->phi();
  int phib = trig->phiB();
 
  float dir = (phib / 512. + phi / 4096.) * radToDeg_;
 
  // change sign in case of negative wheels
  if (!hasPosRF(wh, sec)) {
    dir = -dir;
  }
 
  return dir;
}

References DeadROC_duringRun::dir, hasPosRF(), phi, radToDeg_, fileinputsource_cfi::sec, and ClusterTask_cfi::trig.

Referenced by DTLocalTriggerLutTask::analyze(), DTLocalTriggerTask::runSegmentAnalysis(), DTLocalTriggerBaseTask::runTMAnalysis(), and DTLocalTriggerTask::runTMAnalysis().

trigPos()

float DTTrigGeomUtils::trigPos

(

const L1MuDTChambPhDigi *

trig

)

Return local position (trigger RF) for a given trigger primitive.

Definition at line 98 of file DTTrigGeomUtils.cc.

                                                            {
  int wh = trig->whNum();
  int sec = trig->scNum() + 1;
  int st = trig->stNum();
  int phi = trig->phi();
 
  float phin = (sec - 1) * Geom::pi() / 6;
  float phicenter = 0;
  float r = 0;
  float xcenter = 0;
 
  if (sec == 4 && st == 4) {
    GlobalPoint gpos = phi > 0 ? muonGeom_->chamber(DTChamberId(wh, st, 13))->position()
                               : muonGeom_->chamber(DTChamberId(wh, st, 4))->position();
    xcenter = phi > 0 ? xCenter_[0] : -xCenter_[0];
    phicenter = gpos.phi();
    r = gpos.perp();
  } else if (sec == 10 && st == 4) {
    GlobalPoint gpos = phi > 0 ? muonGeom_->chamber(DTChamberId(wh, st, 14))->position()
                               : muonGeom_->chamber(DTChamberId(wh, st, 10))->position();
    xcenter = phi > 0 ? xCenter_[1] : -xCenter_[1];
    phicenter = gpos.phi();
    r = gpos.perp();
  } else {
    GlobalPoint gpos = muonGeom_->chamber(DTChamberId(wh, st, sec))->position();
    phicenter = gpos.phi();
    r = gpos.perp();
  }
 
  float deltaphi = phicenter - phin;
  float x = (tan(phi / 4096.) - tan(deltaphi)) *
            (r * cos(deltaphi) - zcn_[st - 1]);  //zcn is in local coordinates -> z invreases approching to vertex
  if (hasPosRF(wh, sec)) {
    x = -x;
  }  // change sign in case of positive wheels
  x += xcenter;
 
  return x;
}

References DTGeometry::chamber(), funct::cos(), hasPosRF(), muonGeom_, PV3DBase< T, PVType, FrameType >::perp(), phi, PV3DBase< T, PVType, FrameType >::phi(), Geom::pi(), GeomDet::position(), alignCSCRings::r, fileinputsource_cfi::sec, funct::tan(), ClusterTask_cfi::trig, x, xCenter_, and zcn_.

Referenced by DTLocalTriggerLutTask::analyze(), DTLocalTriggerTask::runSegmentAnalysis(), DTLocalTriggerBaseTask::runTMAnalysis(), and DTLocalTriggerTask::runTMAnalysis().

trigToSeg()

void DTTrigGeomUtils::trigToSeg ( int  st, float &  x, float  dir  )

inline

Compute Trigger x coordinate in chamber RF.

Definition at line 45 of file DTTrigGeomUtils.h.

{ x -= tan(dir / radToDeg_) * zcn_[st - 1]; };

References DeadROC_duringRun::dir, radToDeg_, funct::tan(), x, and zcn_.

Referenced by DTLocalTriggerLutTask::analyze(), and DTLocalTriggerTask::runSegmentAnalysis().

Member Data Documentation

muonGeom_

edm::ESHandle<DTGeometry> DTTrigGeomUtils::muonGeom_

private

Definition at line 48 of file DTTrigGeomUtils.h.

Referenced by DTTrigGeomUtils(), phiRange(), thetaRange(), and trigPos().

radToDeg_

float DTTrigGeomUtils::radToDeg_

private

Definition at line 53 of file DTTrigGeomUtils.h.

Referenced by computeSCCoordinates(), DTTrigGeomUtils(), trigDir(), and trigToSeg().

xCenter_

float DTTrigGeomUtils::xCenter_[2]

private

Definition at line 54 of file DTTrigGeomUtils.h.

Referenced by computeSCCoordinates(), DTTrigGeomUtils(), and trigPos().

zcn_

float DTTrigGeomUtils::zcn_[4]

private

Definition at line 52 of file DTTrigGeomUtils.h.

Referenced by DTTrigGeomUtils(), trigPos(), and trigToSeg().