#include <EEmcSmdGeom.h>

Inheritance diagram for EEmcSmdGeom:

Public Member Functions
	EEmcSmdGeom ()
	defaulty constructor

virtual	~EEmcSmdGeom ()
	default empty destructor

const StructEEmcStrip *	getDcaStripPtr (const Int_t iPlane, const TVector3 &point, Float_t *dca) const

const StructEEmcStrip *	getDcaStripPtr (const Int_t iPlane, const Int_t iSec, const TVector3 &point, Float_t *dca) const

void	init ()
	Initialize geometry class.

void	buildStripPtrVector ()
	build mStripPtrVector

void	setSectors (const intVec sectorIdVec)
	set sectors for partial EEMC

bool	IsSectorIn (const Int_t iSec) const
	return sector status

StructEEmcStrip	initStrip () const
	instance and initialize a strip

StructEEmcSmdParam &	getEEmcSmdParam ()
	return SMD geometry parameters

const StructEEmcSmdParam &	getEEmcSmdParam () const

StructEEmcSmdSector &	getEEmcSector (const Int_t iUV, const Int_t iSec)
	return structure-sector from iUV and iSec

const StructEEmcSmdSector &	getEEmcSector (const Int_t iUV, const Int_t iSec) const

Int_t	getEEmcISec (const Int_t iPlane, const TVector3 &point) const
	return index of a sector from a point in a plane

StructEEmcStrip *	getStripPtr (const Int_t iStrip, const Int_t iUV, const Int_t iSec)
	return a strip pointer from indices

const StructEEmcStrip *	getStripPtr (const Int_t iStrip, const Int_t iUV, const Int_t iSec) const

const StructEEmcStrip *	getDca2Strip (const Int_t iUV, const TVector3 &point, Float_t *dca) const

TVector3	getIntersection (Int_t iSec, Int_t iUStrip, Int_t iVStrip, const TVector3 &vertex) const

TVector3	getIntersection (const StructEEmcStrip u, const StructEEmcStrip v, const TVector3 &vertex) const

TVector3	getIntersection (Int_t iSec, Int_t iUStrip, Int_t iVStrip) const
	Assumes nominal vertex (0,0,0)

TVector3	getIntersection (Int_t iSec, Float_t iUStrip, Float_t iVStrip) const
	Assumes nominal vertex (0,0,0)

TVector3	getIntersection (const StructEEmcStrip u, const StructEEmcStrip v) const
	Assumes nominal vertex (0,0,0)

Int_t	getNStrips (Int_t iSec, Int_t iUV) const

bool	matchStrips (const StructEEmcStripId &stripStructId1, const StructEEmcStripId &stripStructId2, Int_t nTolerance) const
	match two strips

TVector3	getstripEnd (const StructEEmcStrip &strip, const Int_t endId) const
	return strip-end of 3D-vector

void	printGeom (ostream &os=cout) const
	printout global geometry parameters

void	printSector (const StructEEmcSmdSector Sector, ostream &os=cout) const
	printout sector-specific geometry parameters

void	printStrip (const StructEEmcStrip Strip, ostream &os=cout) const
	printout strip-specific geometry parameters

void	printStripId (const StructEEmcStripId StripId, ostream &os=cout) const
	printout stripStructId

Static Public Member Functions
static EEmcSmdGeom *	instance ()

static EEmcSmdGeom *	instance (intVec sectorIdVec)

Protected Member Functions
void	buildSmdGeom ()

Protected Attributes
StructEEmcSmdParam	mEEmcSmdParam

StructEEmcSmdSector	mEEmcSector [kEEmcNumSmdUVs][kEEmcNumSectors]
	general geometry variables

EEmcStripPtrVec	mStripPtrVector
	storage for all strip pointers More...

bool	mIsSectorIn [kEEmcNumSectors]
	storage for all strip pointers

int	kEEmcSmdMap_iPlane [kEEmcNumSmdUVs][kEEmcNumSectors]
	sector status.

Static Protected Attributes
static EEmcSmdGeom *	sInstance = 0

Detailed Description

Author: Wei-Ming Zhangg, Jason Webb

Id:: EEmcSmdGeom.cxx,v 1.17 2015/07/21 17:10:02 jeromel Exp

Author: Wei-Ming Zhang

Revisions:

01/28/04 Jason Webb – Renamed to EEmcSmdGeom, StRoot dependent code moved to a derived class StEEmcSmdGeom. The user interface for StEEmcSmdGeom should remain unchanged. Revision history for StEEmcSmdGeom moved to end of header file.

Description: Interface to EEMC-SMD database

The following demensions are defined for SMD in EEmcGeomDefs.h EEmcNumSectors = 12 (The order follows numbering scheme of TPC sectors) kEEmcNumSmdPlanes = 3 (1: the innermost and 3: the outermost) kEEmcNumStrips =288 (1: the shortes inner and 288: the shortest outer) kEEmcNumEdgeStrips =283 (1: the shortes inner and 283: the shortest outer) kEEmcNumSmdLayers = 2 (1: U and 2: V)

Author: Wei-Ming Zhangg, Jason Webb

Id:: EEmcSmdGeom.h,v 1.10 2010/08/26 22:48:55 ogrebeny Exp

Description: Interface to EEMC-SMD database

The following demensions are defined for SMD in EEmcGeomDefs.h EEmcNumSectors = 12 (The order follows numbering scheme of TPC sectors) kEEmcNumSmdPlanes = 3 (1: the innermost and 3: the outermost) kEEmcNumStrips =288 (1: the shortes inner and 288: the shortest outer) kEEmcNumEdgeStrips =283 (1: the shortes inner and 283: the shortest outer) kEEmcNumSmdLayers = 2 (1: U and 2: V)

Valid range of arguments for ~all input params for methods in this class iSec=[0,11], maps sectors [1,12] iUV=[0,1], maps SMD planes [U,V] iPlane=[0,1,2] - experts only, changes meaning form sector to sector iUStrip, iVStrip=[0,287], maps SMD strip ID [1,288]

Definition at line 92 of file EEmcSmdGeom.h.

Member Function Documentation

const StructEEmcStrip * EEmcSmdGeom::getDca2Strip	(	const Int_t	iUV,
		const TVector3 &	point,
		Float_t *	dca
	)		const

Returns a pointer to the eemc smd strip which is closest to the given point in the specified SMD plane.

Parameters

iUV	0=smd-u plane, 1=smd-v plane
point	TVector3 specifying a point on the endcap
dca	distance of closest approach to the strip priori we do not know if the track is charged or not and how to extrapolate it. must takes care to provide 'point' at the z-location he/she needs the cross point. I realize it is the chicken and egg problem if we want sub-mm accuracy. May be solved by iterations.

Definition at line 457 of file EEmcSmdGeom.cxx.

References getDcaStripPtr(), and kEEmcSmdMap_iPlane.

const StructEEmcStrip * EEmcSmdGeom::getDcaStripPtr	(	const Int_t	iPlane,
		const TVector3 &	point,
		Float_t *	dca
	)		const

iPlane=[0,1,2] - experts only, changes meaning form sector to sector return a DCA strip pointer from a point (float *dca carries sign)

Definition at line 446 of file EEmcSmdGeom.cxx.

References getEEmcISec().

Referenced by getDca2Strip().

TVector3 EEmcSmdGeom::getIntersection	(	Int_t	iSec,
		Int_t	iUStrip,
		Int_t	iVStrip,
		const TVector3 &	vertex
	)		const

In a given sector, return the vector from the specified vertex along the line defined by the intersection of the two planes defined by the two SMD strips. If two strips do not intersect, a warning is issued and -999 returned in the third component.

Parameters

iSec	sector number [0,12)
iUStrip	index of the U strip [0,nstrips)
iVStrip	index of the V strip [0,nstrips)
vertex	the event vertex

Definition at line 628 of file EEmcSmdGeom.cxx.

References getNStrips(), and getStripPtr().

Referenced by StMyPointMaker::AssociateClusters(), StEEmcPointMaker::buildSmdPoints(), StEEmcIUPointMaker::buildSmdPoints(), StEEmcPointFinderIU_t::findPoints(), StEEmcPointFitMaker::FitSector(), getIntersection(), and StMyPointMaker::Make().

TVector3 EEmcSmdGeom::getIntersection	(	const StructEEmcStrip *	u,
		const StructEEmcStrip *	v,
		const TVector3 &	vertex
	)		const

Return the vector from the specified vertex along the line defined by the intersection of the two planes defined by the two SMD strips. If two strips do not intersect, a warning is issued and -999 returned in the third component.

Parameters