EEmcSmdGeom Class Reference

#include <EEmcSmdGeom.h>

Inheritance diagram for EEmcSmdGeom:

List of all members.

Public Member Functions
virtual	~EEmcSmdGeom ()
	default empty destructor
const StructEEmcStrip *	getDcaStripPtr (const Int_t iPlane, const TVector3 &point, Float_t *dca)
const StructEEmcStrip *	getDcaStripPtr (const Int_t iPlane, const Int_t iSec, const TVector3 &point, Float_t *dca)
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 ()
	instance and initialize a strip
StructEEmcSmdParam	getEEmcSmdParam () const
	return SMD geometry parameters
StructEEmcSmdSector	getEEmcSector (const Int_t iUV, const Int_t iSec) const
	return structure-sector from iUV and iSec
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 *	getDca2Strip (const Int_t iUV, const TVector3 &point, Float_t *dca)
TVector3	getIntersection (Int_t iSec, Int_t iUStrip, Int_t iVStrip, TVector3 vertex)
TVector3	getIntersection (StructEEmcStrip *u, StructEEmcStrip *v, TVector3 vertex)
TVector3	getIntersection (Int_t iSec, Int_t iUStrip, Int_t iVStrip)
	Assumes nominal vertex (0,0,0).
TVector3	getIntersection (Int_t iSec, Float_t iUStrip, Float_t iVStrip)
	Assumes nominal vertex (0,0,0).
TVector3	getIntersection (StructEEmcStrip *u, StructEEmcStrip *v)
	Assumes nominal vertex (0,0,0).
Int_t	getNStrips (Int_t iSec, Int_t iUV)
bool	matchStrips (const StructEEmcStripId stripStructId1, const StructEEmcStripId stripStructId2, Int_t nTolerance)
	match two strips
TVector3	getstripEnd (const StructEEmcStrip strip, const Int_t endId)
	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
EEmcSmdGeom *	instance ()
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
bool	mIsSectorIn [kEEmcNumSectors]
	storage for all strip pointers
int	kEEmcSmdMap_iPlane [kEEmcNumSmdUVs][kEEmcNumSectors]
	sector status.
Static Protected Attributes
EEmcSmdGeom *	sInstance = 0

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Detailed Description

Author:

Wei-Ming Zhangg, Jason Webb

Id

EEmcSmdGeom.cxx,v 1.14 2008/02/17 17:37:32 balewski 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)

Definition at line 92 of file EEmcSmdGeom.h.

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Member Function Documentation

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

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 451 of file EEmcSmdGeom.cxx. References getDca2Strip(), getDcaStripPtr(), and kEEmcSmdMap_iPlane. Referenced by getDca2Strip().

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

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 440 of file EEmcSmdGeom.cxx. References getDcaStripPtr(), and getEEmcISec(). Referenced by getDca2Strip(), and getDcaStripPtr().

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

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: u  a pointer to the structure which defines the smd-u strip v  a pointer to the structure which defines the smd-v strip vertex  the event vertex Definition at line 638 of file EEmcSmdGeom.cxx. References getIntersection(), and getStripPtr().

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

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 622 of file EEmcSmdGeom.cxx. References getIntersection(), getNStrips(), and getStripPtr(). Referenced by StMyPointMaker::AssociateClusters(), StEEmcPointMaker::buildSmdPoints(), StEEmcIUPointMaker::buildSmdPoints(), StEEmcPointFitMaker::FitSector(), getIntersection(), and StMyPointMaker::Make().

Int_t EEmcSmdGeom::getNStrips (  Int_t  iSec, Int_t  iUV )  [inline]

Returns the number of SMD strips in the specified sector and plane Parameters: iSec  eemc sector number [0,12) iUV  eemc smd plane number 0=U 1=V Definition at line 191 of file EEmcSmdGeom.h. References getEEmcSector(), and getNStrips(). Referenced by getIntersection(), and getNStrips().

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Member Data Documentation

EEmcStripPtrVec EEmcSmdGeom::mStripPtrVector [protected]

storage for all strip pointers storage for 2*12 sectors Definition at line 105 of file EEmcSmdGeom.h. Referenced by buildStripPtrVector(), and getStripPtr().

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The documentation for this class was generated from the following files:

• StEEmcUtil/StEEmcSmd/EEmcSmdGeom.h
• StEEmcUtil/StEEmcSmd/EEmcSmdGeom.cxx

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