TkRadialStripTopology Class Reference

#include <TkRadialStripTopology.h>

Inheritance diagram for TkRadialStripTopology:

Public Member Functions
float	angularWidth () const override
float	centreToIntersection () const override
int	channel (const LocalPoint &) const override
float	coveredStrips (const LocalPoint &lp1, const LocalPoint &lp2) const override
float	detHeight () const override
LocalError	localError (const MeasurementPoint &, const MeasurementError &) const override
LocalError	localError (float strip, float stripErr2) const override
float	localPitch (const LocalPoint &) const override
LocalPoint	localPosition (const MeasurementPoint &) const override
LocalPoint	localPosition (float strip) const override
float	localStripLength (const LocalPoint &) const override
MeasurementError	measurementError (const LocalPoint &, const LocalError &) const override
MeasurementPoint	measurementPosition (const LocalPoint &) const override
int	nearestStrip (const LocalPoint &) const override
int	nstrips () const override
float	originToIntersection () const override
float	phiOfOneEdge () const override
float	phiPitch (void) const override
float	strip (const LocalPoint &) const override
float	stripAngle (float strip) const override
float	stripLength () const override
	TkRadialStripTopology (int ns, float aw, float dh, float r, int yAx=1, float yMid=0.)
float	xOfStrip (int strip, float y) const override
float	yAxisOrientation () const override
float	yCentreOfStripPlane () const override
float	yDistanceToIntersection (float y) const override
float	yExtentOfStripPlane () const override
	~TkRadialStripTopology () override
Public Member Functions inherited from RadialStripTopology
virtual LocalError	localError (float strip, float stripErr2) const=0
virtual LocalError	localError (float strip, float stripErr2, const Topology::LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual LocalPoint	localPosition (float strip) const=0
virtual LocalPoint	localPosition (float strip, const Topology::LocalTrackPred &) const
	conversion taking also the predicted track state More...
float	pitch () const final
	~RadialStripTopology () override
Public Member Functions inherited from StripTopology
virtual LocalError	localError (const MeasurementPoint &, const MeasurementError &) const=0
virtual LocalError	localError (const MeasurementPoint &mp, const MeasurementError &me, const LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual LocalError	localError (float strip, float stripErr2, const Topology::LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual float	localPitch (const LocalPoint &lp, const Topology::LocalTrackAngles &) const
	conversion taking also the angle from the track state (LocalTrajectoryParameters) More...
virtual LocalPoint	localPosition (const MeasurementPoint &) const=0
virtual LocalPoint	localPosition (const MeasurementPoint &mp, const LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual LocalPoint	localPosition (float strip, const Topology::LocalTrackPred &) const
	conversion taking also the predicted track state More...
virtual float	localStripLength (const LocalPoint &lp, const Topology::LocalTrackAngles &) const
	conversion taking also the angle from the track state (LocalTrajectoryParameters) More...
virtual float	strip (const LocalPoint &lp, const Topology::LocalTrackAngles &) const
	conversion taking also the angle from the track state (LocalTrajectoryParameters) More...
	~StripTopology () override
Public Member Functions inherited from Topology
virtual int	channel (const LocalPoint &lp, const LocalTrackAngles &) const
	conversion taking also the angle from the track state More...
virtual LocalError	localError (const MeasurementPoint &mp, const MeasurementError &me, const LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual LocalPoint	localPosition (const MeasurementPoint &mp, const LocalTrackPred &) const
	conversion taking also the angle from the predicted track state More...
virtual MeasurementError	measurementError (const LocalPoint &lp, const LocalError &le, const LocalTrackAngles &) const
	conversion taking also the angle from the track state More...
virtual MeasurementPoint	measurementPosition (const LocalPoint &lp, const LocalTrackAngles &) const
	conversion taking also the angle from the track state More...
virtual	~Topology ()

Private Attributes
float	theAngularWidth
float	theAWidthInverse
float	theCentreToIntersection
float	theDetHeight
int	theNumberOfStrips
float	thePhiOfOneEdge
double	theRadialSigma
float	theTanAW
float	theTanOfOneEdge
float	theYAxisOrientation
float	yCentre

Additional Inherited Members
Public Types inherited from Topology
typedef Point2DBase< double, LocalTag >	Local2DPoint
typedef Vector2D::MathVector	MathVector2D
typedef Basic2DVector< double >	Vector2D

Detailed Description

A StripTopology in which the component strips subtend a constant angular width, and, if projected, intersect at a point.

Author

Tim Cox

WARNING! Wherever 'float strip' is used the units of 'strip' are angular widths of each strip. The range is from 0.0 at the extreme edge of the 'first' strip at one edge of the detector, to nstrip*angular width at the other edge.
The centre of the first strip is at strip = 0.5
The centre of the last strip is at strip = 0.5 + (nstrip-1)
This is for consistency with CommonDet usage of 'float strip' (but where units are strip pitch rather than strip angular width.)

WARNING! If the mid-point along local y of the plane of strips does not correspond to the local coordinate origin, set the final ctor argument appropriately.

this version is optimized for tracker and is FINAL

Definition at line 28 of file TkRadialStripTopology.h.

Constructor & Destructor Documentation

TkRadialStripTopology()

TkRadialStripTopology::TkRadialStripTopology	(	int	ns,
		float	aw,
		float	dh,
		float	r,
		int	yAx = 1,
		float	yMid = 0.
	)

Constructor from:

Parameters

ns	number of strips
aw	angular width of a strip
dh	detector height (usually 2 x apothem of TrapezoidalPlaneBounds)
r	radial distance from symmetry centre of detector to the point at which the outer edges of the two extreme strips (projected) intersect.
yAx	orientation of local y axis: 1 means pointing from the smaller side of the module to the larger side (along apothem), and -1 means in the opposite direction, i.e. from the larger side along the apothem to the smaller side. Default value is 1.
yMid	local y offset if mid-point of detector (strip plane) does not coincide with local origin. This decouples the extent of strip plane from the boundary of the detector in which the RST is embedded.

Definition at line 69 of file TkRadialStripTopology.cc.

    : theNumberOfStrips(ns),
      theAngularWidth(aw),
      theAWidthInverse(1.f / aw),
      theTanAW(std::tan(aw)),
      theDetHeight(dh),
      theCentreToIntersection(r),
      theYAxisOrientation(yAx),
      yCentre(yMid),
      theRadialSigma(std::pow(dh, 2.f) * (1.f / 12.f)) {
  // Angular offset of extreme edge of detector, so that angle is
  // zero for a strip lying along local y axis = long symmetry axis of plane of strips
  thePhiOfOneEdge = -(0.5 * theNumberOfStrips) * theAngularWidth;  // always negative!
  theTanOfOneEdge = std::tan(std::abs(thePhiOfOneEdge));
  assert(std::abs(thePhiOfOneEdge) < 0.15);  //
 
  LogTrace("TkRadialStripTopology") << "TkRadialStripTopology: constructed with"
                                    << " strips = " << ns << " width = " << aw << " rad "
                                    << " det_height = " << dh << " ctoi = " << r << " phi_edge = " << thePhiOfOneEdge
                                    << " rad "
                                    << " y_ax_ori = " << theYAxisOrientation << " y_det_centre = " << yCentre << "\n";
}

References funct::abs(), cms::cuda::assert(), cuy::dh, LogTrace, alignCSCRings::r, funct::tan(), theAngularWidth, theNumberOfStrips, thePhiOfOneEdge, theTanOfOneEdge, theYAxisOrientation, and yCentre.

~TkRadialStripTopology()

TkRadialStripTopology::~TkRadialStripTopology ( )

inlineoverride

Destructor

Definition at line 49 of file TkRadialStripTopology.h.

{}

Member Function Documentation

angularWidth()

float TkRadialStripTopology::angularWidth ( ) const

inlineoverridevirtual

Angular width of a each strip

Implements RadialStripTopology.

Definition at line 164 of file TkRadialStripTopology.h.

{ return theAngularWidth; }

References theAngularWidth.

Referenced by StripCPE::fillParams(), localError(), measurementError(), phiPitch(), and stripAngle().

centreToIntersection()

float TkRadialStripTopology::centreToIntersection ( ) const

inlineoverridevirtual

Distance from the intersection of the projections of the extreme edges of the two extreme strips to the symmetry centre of the plane of strips.

Implements RadialStripTopology.

Definition at line 186 of file TkRadialStripTopology.h.

{ return theCentreToIntersection; }

References theCentreToIntersection.

Referenced by localError().

channel()

int TkRadialStripTopology::channel ( const LocalPoint &  lp ) const

overridevirtual

Channel number corresponding to a given LocalPoint.
This is effectively an integer version of strip(), with range 0 to nstrips-1.
LocalPoints outside the detector strip plane will be considered as contributing to the edge channels 0 or nstrips-1.

Implements RadialStripTopology.

Definition at line 92 of file TkRadialStripTopology.cc.

                                                             {
  return std::min(int(strip(lp)), theNumberOfStrips - 1);
}

References min(), strip(), and theNumberOfStrips.

coveredStrips()

float TkRadialStripTopology::coveredStrips ( const LocalPoint &  lp1, const LocalPoint &  lp2  ) const

overridevirtual

Reimplemented from StripTopology.

Definition at line 119 of file TkRadialStripTopology.cc.

                                                                                             {
  // http://en.wikipedia.org/wiki/List_of_trigonometric_identities#Angle_sum_and_difference_identities
  // atan(a)-atan(b) = atan( (a-b)/(1+a*b) )
  // avoid divisions
  // float t1 = lp1.x()/yDistanceToIntersection( lp1.y() );
  // float t2 = lp2.x()/yDistanceToIntersection( lp2.y() );
  // float t = (t1-t2)/(1.+t1*t2);
  auto y1 = yDistanceToIntersection(lp1.y());
  auto y2 = yDistanceToIntersection(lp2.y());
  auto x1 = lp1.x();
  auto x2 = lp2.x();
 
  auto t = (y2 * x1 - y1 * x2) / (y1 * y2 + x1 * x2);
 
#ifdef MATH_STS
  statS.add(t);
#endif
  //   std::cout << "atans " << atanClip(t)
  //                        <<" "<< std::atan2(lp1.x(),yDistanceToIntersection(lp1.y()) )
  //                               -std::atan2(lp2.x(),yDistanceToIntersection(lp2.y()) ) << std::endl;
  // clip???
  return atanClip(t) * theAWidthInverse;
  //   return (measurementPosition(lp1)-measurementPosition(lp2)).x();
}

References submitPVValidationJobs::t, theAWidthInverse, PV3DBase< T, PVType, FrameType >::x(), testProducerWithPsetDescEmpty_cfi::x1, testProducerWithPsetDescEmpty_cfi::x2, PV3DBase< T, PVType, FrameType >::y(), testProducerWithPsetDescEmpty_cfi::y1, testProducerWithPsetDescEmpty_cfi::y2, and yDistanceToIntersection().

detHeight()

float TkRadialStripTopology::detHeight ( ) const

inlineoverridevirtual

Length of long symmetry axis of plane of strips

Implements RadialStripTopology.

Definition at line 174 of file TkRadialStripTopology.h.

{ return theDetHeight; }

References theDetHeight.

Referenced by localError(), localPosition(), localStripLength(), measurementError(), and measurementPosition().

localError() [1/2]

LocalError TkRadialStripTopology::localError ( const MeasurementPoint &  mp, const MeasurementError &  me  ) const

overridevirtual

LocalError for a given MeasurementPoint with known MeasurementError. This may be used in Kalman filtering and hence must allow possible correlations between the components.

Implements RadialStripTopology.

Definition at line 182 of file TkRadialStripTopology.cc.

                                                                                                         {
  const double phi(stripAngle(mp.x())), s1(std::sin(phi)), c1(std::cos(phi)), cs(s1 * c1), s2(s1 * s1),
      c2(1 - s2),  // rotation matrix
 
      T(angularWidth() * (centreToIntersection() + yAxisOrientation() * mp.y() * detHeight()) /
        c1),                // tangential measurement unit (local pitch)
      R(detHeight() / c1),  // radial measurement unit (strip length)
      tt(me.uu() * T * T),  // tangential sigma^2
      rr(me.vv() * R * R),  // radial sigma^2
      tr(me.uv() * T * R),
 
      xx(c2 * tt + 2 * cs * tr + s2 * rr), yy(s2 * tt - 2 * cs * tr + c2 * rr), xy(cs * (rr - tt) + tr * (c2 - s2));
 
  return LocalError(xx, xy, yy);
}

References angularWidth(), alignmentValidation::c1, centreToIntersection(), funct::cos(), fwrapper::cs, detHeight(), hlt_dqm_clientPB-live_cfg::me, phi, dttmaxenums::R, findQualityFiles::rr, indexGen::s2, funct::sin(), stripAngle(), groupFilesInBlocks::tt, PV2DBase< T, PVType, FrameType >::x(), geometryCSVtoXML::xx, geometryCSVtoXML::xy, PV2DBase< T, PVType, FrameType >::y(), yAxisOrientation(), and geometryCSVtoXML::yy.

localError() [2/2]

LocalError TkRadialStripTopology::localError ( float  strip, float  stripErr2  ) const

overridevirtual

LocalError for a pure strip measurement, where 'strip' is the (float) position (a 'phi' angle wrt y axis) and stripErr2 is the sigma-squared. Both quantities are expressed in units of theAngularWidth of a strip.

Implements RadialStripTopology.

Definition at line 166 of file TkRadialStripTopology.cc.

                                                                               {
  double phi = stripAngle(strip);
 
  const double t1(tan15(phi)),  // std::tan(phif)), // (vdt::fast_tanf(phif)),
      t2(t1 * t1),
      // s1(std::sin(phi)), c1(std::cos(phi)),
      // cs(s1*c1), s2(s1*s1), c2(1-s2), // rotation matrix
 
      tt(stripErr2 * std::pow(centreToIntersection() * angularWidth(), 2.f)),  // tangential sigma^2   *c2
      rr(theRadialSigma),  // radial sigma^2( uniform prob density along strip)  *c2
 
      xx(tt + t2 * rr), yy(t2 * tt + rr), xy(t1 * (rr - tt));
 
  return LocalError(xx, xy, yy);
}

References angularWidth(), centreToIntersection(), f, phi, funct::pow(), findQualityFiles::rr, strip(), stripAngle(), RandomServiceHelper::t1, RandomServiceHelper::t2, theRadialSigma, groupFilesInBlocks::tt, geometryCSVtoXML::xx, geometryCSVtoXML::xy, and geometryCSVtoXML::yy.

localPitch()

float TkRadialStripTopology::localPitch ( const LocalPoint &  lp ) const

overridevirtual

Pitch (strip width) at a given LocalPoint.
BEWARE: are you sure you really want to call this for a RadialStripTopology?

Implements RadialStripTopology.

Definition at line 214 of file TkRadialStripTopology.cc.

                                                                  {
  // this should be ~ y*(tan(phi+aw)-tan(phi)) = -x + y*(tan(aw)+tan(phi))/(1.f-tan(aw)*tan(phi)) tan(phi)=x/y
  float y = yDistanceToIntersection(lp.y());
  float x = std::abs(lp.x());
  return y * (y * theTanAW + x) / (y - theTanAW * x) - x;
}

References funct::abs(), theTanAW, x, PV3DBase< T, PVType, FrameType >::x(), y, PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

Referenced by StripCPE::fillParams().

localPosition() [1/2]

LocalPoint TkRadialStripTopology::localPosition ( const MeasurementPoint &  mp ) const

overridevirtual

LocalPoint for a given MeasurementPoint
What's a MeasurementPoint?
In analogy with that used with TrapezoidalStripTopology objects, a MeasurementPoint is a 2-dim object.
The first dimension measures the angular position wrt central line of symmetry of detector, in units of strip (angular) widths (range 0 to total angle subtended by a detector).
The second dimension measures the fractional position along the strip (range -0.5 to +0.5).
BEWARE! The components are not Cartesian.

Implements RadialStripTopology.

Definition at line 148 of file TkRadialStripTopology.cc.

                                                                                {
  const float  // y = (L/cos(phi))*mp.y()*cos(phi)
      y(mp.y() * detHeight() + yCentreOfStripPlane()),
      x(yAxisOrientation() * yDistanceToIntersection(y) * tan15(stripAngle(mp.x())));
  return LocalPoint(x, y);
}

References detHeight(), stripAngle(), x, PV2DBase< T, PVType, FrameType >::x(), y, PV2DBase< T, PVType, FrameType >::y(), yAxisOrientation(), yCentreOfStripPlane(), and yDistanceToIntersection().

localPosition() [2/2]

LocalPoint TkRadialStripTopology::localPosition ( float  strip ) const

overridevirtual

LocalPoint on x axis for given 'strip' 'strip' is a float in units of the strip (angular) width

Implements RadialStripTopology.

Definition at line 144 of file TkRadialStripTopology.cc.

                                                                 {
  return LocalPoint(yAxisOrientation() * originToIntersection() * tan15(stripAngle(strip)), 0);
}

References originToIntersection(), strip(), stripAngle(), and yAxisOrientation().

localStripLength()

float TkRadialStripTopology::localStripLength ( const LocalPoint &  lp ) const

overridevirtual

Length of a strip passing through a given LocalPpoint

Implements RadialStripTopology.

Definition at line 104 of file TkRadialStripTopology.cc.

                                                                        {
  return detHeight() * std::sqrt(1.f + std::pow(lp.x() / yDistanceToIntersection(lp.y()), 2.f));
}

References detHeight(), f, funct::pow(), mathSSE::sqrt(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

measurementError()

MeasurementError TkRadialStripTopology::measurementError ( const LocalPoint &  p, const LocalError &  e  ) const

overridevirtual

Implements RadialStripTopology.

Definition at line 198 of file TkRadialStripTopology.cc.

                                                                                                       {
  const double yHitToInter(yDistanceToIntersection(p.y())),
      t(yAxisOrientation() * p.x() / yHitToInter),  // tan(strip angle)
      cs(t / (1 + t * t)), s2(t * cs), c2(1 - s2),  // rotation matrix
 
      T2(1. / (std::pow(angularWidth(), 2.f) *
               (std::pow(p.x(), 2.f) + std::pow(yHitToInter, 2)))),  // 1./tangential measurement unit (local pitch) ^2
      R2(c2 / std::pow(detHeight(), 2.f)),                           // 1./ radial measurement unit (strip length) ^2
 
      uu((c2 * e.xx() - 2 * cs * e.xy() + s2 * e.yy()) * T2), vv((s2 * e.xx() + 2 * cs * e.xy() + c2 * e.yy()) * R2),
      uv((cs * (e.xx() - e.yy()) + e.xy() * (c2 - s2)) * std::sqrt(T2 * R2));
 
  return MeasurementError(uu, uv, vv);
}

References angularWidth(), fwrapper::cs, detHeight(), MillePedeFileConverter_cfg::e, f, AlCaHLTBitMon_ParallelJobs::p, funct::pow(), indexGen::s2, mathSSE::sqrt(), submitPVValidationJobs::t, yAxisOrientation(), and yDistanceToIntersection().

measurementPosition()

MeasurementPoint TkRadialStripTopology::measurementPosition ( const LocalPoint &  lp ) const

overridevirtual

Implements RadialStripTopology.

Definition at line 155 of file TkRadialStripTopology.cc.

                                                                                      {
  // phi is [pi/2 - conventional local phi], use atan2(x,y) rather than atan2(y,x)
  // clip   ( at pi/8 or detedge+tollerance?)
  float t = lp.x() / yDistanceToIntersection(lp.y());
#ifdef MATH_STS
  statM.add(t);
#endif
  const float phi = atanClip(t);
  return MeasurementPoint((phi - phiOfOneEdge()) * theAWidthInverse, (lp.y() - yCentreOfStripPlane()) / detHeight());
}

References detHeight(), phi, phiOfOneEdge(), submitPVValidationJobs::t, theAWidthInverse, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), yCentreOfStripPlane(), and yDistanceToIntersection().

nearestStrip()

int TkRadialStripTopology::nearestStrip ( const LocalPoint &  lp ) const

overridevirtual

Nearest strip to given LocalPoint

Implements RadialStripTopology.

Definition at line 96 of file TkRadialStripTopology.cc.

                                                                  {
  return std::min(nstrips(), static_cast<int>(std::max(float(0), strip(lp))) + 1);
}

References SiStripPI::max, min(), nstrips(), and strip().

nstrips()

int TkRadialStripTopology::nstrips ( ) const

inlineoverridevirtual

Total number of strips

Implements RadialStripTopology.

Definition at line 127 of file TkRadialStripTopology.h.

{ return theNumberOfStrips; }

References theNumberOfStrips.

Referenced by nearestStrip(), and strip().

originToIntersection()

float TkRadialStripTopology::originToIntersection ( ) const

inlineoverridevirtual

(y) distance from intersection of the projections of the strips to the local coordinate origin. Same as centreToIntersection() if symmetry centre of strip plane coincides with local origin.

Implements RadialStripTopology.

Definition at line 193 of file TkRadialStripTopology.h.

{ return (theCentreToIntersection - yCentre); }

References theCentreToIntersection, and yCentre.

Referenced by localPosition(), and yDistanceToIntersection().

phiOfOneEdge()

float TkRadialStripTopology::phiOfOneEdge ( ) const

inlineoverridevirtual

Convenience function to access azimuthal angle of extreme edge of first strip measured relative to long symmetry axis of the plane of strips.

WARNING! This angle is measured clockwise from the local y axis which means it is in the conventional azimuthal phi plane, but azimuth is of course measured from local x axis not y. The range of this angle is -(full angle)/2 to +(full angle)/2.
where (full angle) = nstrips() * angularWidth().

Implements RadialStripTopology.

Definition at line 207 of file TkRadialStripTopology.h.

{ return thePhiOfOneEdge; }

References thePhiOfOneEdge.

Referenced by measurementPosition(), strip(), and stripAngle().

phiPitch()

float TkRadialStripTopology::phiPitch ( void  ) const

inlineoverridevirtual

Phi pitch of each strip (= angular width!)

Implements RadialStripTopology.

Definition at line 169 of file TkRadialStripTopology.h.

{ return angularWidth(); }

References angularWidth().

strip()

float TkRadialStripTopology::strip ( const LocalPoint &  lp ) const

overridevirtual

Strip in which a given LocalPoint lies. This is a float which represents the fractional strip position within the detector.
Returns zero if the LocalPoint falls at the extreme low edge of the detector or BELOW, and float(nstrips) if it falls at the extreme high edge or ABOVE.

Implements RadialStripTopology.

Definition at line 112 of file TkRadialStripTopology.cc.

                                                             {
  // phi is measured from y axis --> sign of angle is sign of x * yAxisOrientation --> use atan2(x,y), not atan2(y,x)
  const float phi = atanClip(lp.x() / yDistanceToIntersection(lp.y()));
  const float aStrip = (phi - phiOfOneEdge()) * theAWidthInverse;
  return std::max(float(0), std::min((float)nstrips(), aStrip));
}

References SiStripPI::max, min(), nstrips(), phi, phiOfOneEdge(), theAWidthInverse, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and yDistanceToIntersection().

Referenced by channel(), localError(), localPosition(), nearestStrip(), stripAngle(), and xOfStrip().

stripAngle()

float TkRadialStripTopology::stripAngle ( float  strip ) const

inlineoverridevirtual

Angle between strip and symmetry axis (=local y axis) for given strip.
This is like a phi angle but measured clockwise from y axis rather than counter clockwise from x axis. Note that 'strip' is a float with a continuous range from 0 to float(nstrips) to cover the whole detector, and the centres of strips correspond to half-integer values 0.5, 1.5, ..., nstrips-0.5 whereas values 1, 2, ... nstrips correspond to the upper phi edges of the strips.

Implements RadialStripTopology.

Definition at line 120 of file TkRadialStripTopology.h.

                                               {
    return yAxisOrientation() * (phiOfOneEdge() + strip * angularWidth());
  }

References angularWidth(), phiOfOneEdge(), strip(), and yAxisOrientation().

Referenced by localError(), localPosition(), and xOfStrip().

stripLength()

float TkRadialStripTopology::stripLength ( ) const

inlineoverridevirtual

Height of detector (= length of long symmetry axis of the plane of strips).

Implements RadialStripTopology.

Definition at line 132 of file TkRadialStripTopology.h.

{ return theDetHeight; }

References theDetHeight.

Referenced by StripCPE::fillParams().

xOfStrip()

float TkRadialStripTopology::xOfStrip ( int  strip, float  y  ) const

overridevirtual

Local x where centre of strip intersects input local y
'strip' should be in range 1 to nstrips()

Implements RadialStripTopology.

Definition at line 108 of file TkRadialStripTopology.cc.

                                                              {
  return yAxisOrientation() * yDistanceToIntersection(y) * std::tan(stripAngle(static_cast<float>(strip) - 0.5f));
}

References f, strip(), stripAngle(), funct::tan(), y, yAxisOrientation(), and yDistanceToIntersection().

yAxisOrientation()

float TkRadialStripTopology::yAxisOrientation ( ) const

inlineoverridevirtual

y axis orientation, 1 means detector width increases with local y

Implements RadialStripTopology.

Definition at line 223 of file TkRadialStripTopology.h.

{ return theYAxisOrientation; }

References theYAxisOrientation.

Referenced by localError(), localPosition(), measurementError(), stripAngle(), xOfStrip(), and yDistanceToIntersection().

yCentreOfStripPlane()

float TkRadialStripTopology::yCentreOfStripPlane ( ) const

inlineoverridevirtual

Offset in local y between midpoint of detector (strip plane) extent and local origin

Implements RadialStripTopology.

Definition at line 228 of file TkRadialStripTopology.h.

{ return yCentre; }

References yCentre.

Referenced by localPosition(), and measurementPosition().

yDistanceToIntersection()

float TkRadialStripTopology::yDistanceToIntersection ( float  y ) const

overridevirtual

Distance in local y from a hit to the point of intersection of projected strips

Implements RadialStripTopology.

Definition at line 100 of file TkRadialStripTopology.cc.

                                                                  {
  return yAxisOrientation() * y + originToIntersection();
}

References originToIntersection(), y, and yAxisOrientation().

Referenced by coveredStrips(), localPitch(), localPosition(), localStripLength(), measurementError(), measurementPosition(), strip(), and xOfStrip().

yExtentOfStripPlane()

float TkRadialStripTopology::yExtentOfStripPlane ( ) const

inlineoverridevirtual

y extent of strip plane

Implements RadialStripTopology.

Definition at line 179 of file TkRadialStripTopology.h.

{ return theDetHeight; }  // same as detHeight()

References theDetHeight.

Member Data Documentation

theAngularWidth

float TkRadialStripTopology::theAngularWidth

private

Definition at line 237 of file TkRadialStripTopology.h.

Referenced by angularWidth(), and TkRadialStripTopology().

theAWidthInverse

float TkRadialStripTopology::theAWidthInverse

private

Definition at line 238 of file TkRadialStripTopology.h.

Referenced by coveredStrips(), measurementPosition(), and strip().

theCentreToIntersection

float TkRadialStripTopology::theCentreToIntersection

private

Definition at line 241 of file TkRadialStripTopology.h.

Referenced by centreToIntersection(), and originToIntersection().

theDetHeight

float TkRadialStripTopology::theDetHeight

private

Definition at line 240 of file TkRadialStripTopology.h.

Referenced by detHeight(), stripLength(), and yExtentOfStripPlane().

theNumberOfStrips

int TkRadialStripTopology::theNumberOfStrips

private

Definition at line 236 of file TkRadialStripTopology.h.

Referenced by channel(), nstrips(), and TkRadialStripTopology().

thePhiOfOneEdge

float TkRadialStripTopology::thePhiOfOneEdge

private

Definition at line 242 of file TkRadialStripTopology.h.

Referenced by phiOfOneEdge(), and TkRadialStripTopology().

theRadialSigma

double TkRadialStripTopology::theRadialSigma

private

Definition at line 246 of file TkRadialStripTopology.h.

Referenced by localError().

theTanAW

float TkRadialStripTopology::theTanAW

private

Definition at line 239 of file TkRadialStripTopology.h.

Referenced by localPitch().

theTanOfOneEdge

float TkRadialStripTopology::theTanOfOneEdge

private

Definition at line 243 of file TkRadialStripTopology.h.

Referenced by TkRadialStripTopology().

theYAxisOrientation

float TkRadialStripTopology::theYAxisOrientation

private

Definition at line 244 of file TkRadialStripTopology.h.

Referenced by TkRadialStripTopology(), and yAxisOrientation().

yCentre

float TkRadialStripTopology::yCentre

private

Definition at line 245 of file TkRadialStripTopology.h.

Referenced by originToIntersection(), TkRadialStripTopology(), and yCentreOfStripPlane().