Singleton object of FMD geometry descriptions and parameters. This class is a singleton that handles the geometry parameters of the FMD detectors. More...

#include <AliFMDGeometry.h>

Inheritance diagram for AliFMDGeometry:

[legend]

Public Member Functions
virtual void	Init ()

virtual void	InitTransformations (Bool_t force=kFALSE)

AliFMDRing *	GetInner () const

AliFMDRing *	GetOuter () const

AliFMD1 *	GetFMD1 () const

AliFMD2 *	GetFMD2 () const

AliFMD3 *	GetFMD3 () const

AliFMDDetector *	GetDetector (Int_t i) const

AliFMDRing *	GetRing (Char_t i) const

void	Disable (Int_t i)

void	Enable (Int_t i)

Double_t	GetSiDensity () const

void	Detector2XYZ (UShort_t detector, Char_t ring, UShort_t sector, UShort_t strip, Double_t &x, Double_t &y, Double_t &z) const

Bool_t	XYZ2Detector (Double_t x, Double_t y, Double_t z, UShort_t &detector, Char_t &ring, UShort_t &sector, UShort_t &strip) const

void	Build ()

Int_t	GetDetectorOff () const

Int_t	GetModuleOff () const

Int_t	GetRingOff () const

Int_t	GetSectorOff () const

void	SetDetectorOff (Int_t off)

void	SetModuleOff (Int_t off)

void	SetRingOff (Int_t off)

void	SetSectorOff (Int_t off)

Bool_t	IsActive (Int_t vol) const

void	SetActive (Int_t *active, Int_t n)

void	AddActive (Int_t id)

const TArrayI &	ActiveIds () const

void	SetBuilder (AliFMDGeometryBuilder *b)

void	ExtractGeomInfo ()

void	SetDetailed (Bool_t det)

Bool_t	IsDetailed () const

void	UseAssembly (Bool_t ass)

virtual void	GetGlobal (const AliRecPoint *p, TVector3 &pos, TMatrixF &mat) const

virtual void	GetGlobal (const AliRecPoint *p, TVector3 &pos) const

virtual Bool_t	Impact (const TParticle *particle) const

virtual void	SetAlignableVolumes () const

Public Member Functions inherited from AliGeometry
	AliGeometry ()

virtual	~AliGeometry ()

Static Public Member Functions
static AliFMDGeometry *	Instance ()

static Bool_t	XYZ2REtaPhiTheta (Double_t x, Double_t y, Double_t z, Double_t &r, Double_t &eta, Double_t &phi, Double_t &theta)

Protected Member Functions
	AliFMDGeometry ()

	AliFMDGeometry (const char *name)

	AliFMDGeometry (const AliFMDGeometry &other)

AliFMDGeometry &	operator= (const AliFMDGeometry &other)

virtual	~AliFMDGeometry ()

Protected Member Functions inherited from AliGeometry
	AliGeometry (const Text_t name, const Text_t title)

Protected Attributes
Bool_t	fIsInitialized

AliFMDRing *	fInner

AliFMDRing *	fOuter

AliFMD1 *	fFMD1

AliFMD2 *	fFMD2

AliFMD3 *	fFMD3

Bool_t	fUseFMD1

Bool_t	fUseFMD2

Bool_t	fUseFMD3

Bool_t	fIsInitTrans

AliFMDGeometryBuilder *	fBuilder

Int_t	fDetectorOff

Int_t	fModuleOff

Int_t	fRingOff

Int_t	fSectorOff

TArrayI	fActive

Bool_t	fDetailed

Bool_t	fUseAssembly

Static Protected Attributes
static AliFMDGeometry *	fgInstance = 0

Detailed Description

Singleton object of FMD geometry descriptions and parameters. This class is a singleton that handles the geometry parameters of the FMD detectors.

The actual code is done by various separate classes. Below is diagram showing the relationship between the various FMD classes that handles the geometry

                              +------------+ 
                           +- | AliFMDRing |
         2   |  +------------+
     +----------------+<>--+        |       
     | AliFMDGeometry |             ^                         
     +----------------+<>--+        V 1..2                      
                 3   | +----------------+     
                     +-| AliFMDDetector |     
                 +----------------+   
                                    ^
                                    |
                      +-------------+-------------+
                      |             |             |       
                 +---------+   +---------+   +---------+
                 | AliFMD1 |   | AliFMD2 |   | AliFMD3 |
                 +---------+   +---------+   +---------+

AliFMDRing This class contains all stuff needed to do with a ring. It's used by the AliFMDDetector objects to instantise inner and outer rings. The AliFMDRing objects are shared by the AliFMDDetector objects, and owned by the AliFMDv1 object.
AliFMD1, AliFMD2, and AliFMD3 These are specialisation of AliFMDDetector, that contains the particularities of each of the sub-detector system. It is envisioned that the classes should also define the support volumes and material for each of the detectors.

Definition at line 83 of file AliFMDGeometry.h.

Constructor & Destructor Documentation

AliFMDGeometry::AliFMDGeometry ( )

protected

CTOR

Definition at line 108 of file AliFMDGeometry.cxx.

Referenced by Instance().

AliFMDGeometry::AliFMDGeometry ( const char * name )

protected

CTOR

Parameters

name Not used

Definition at line 136 of file AliFMDGeometry.cxx.

AliFMDGeometry::AliFMDGeometry ( const AliFMDGeometry & other )

protected

Copy CTOR

Parameters

other To copy from

Definition at line 174 of file AliFMDGeometry.cxx.

virtual AliFMDGeometry::~AliFMDGeometry ( )

inlineprotectedvirtual

Destructor

Definition at line 379 of file AliFMDGeometry.h.

Member Function Documentation

const TArrayI& AliFMDGeometry::ActiveIds ( ) const

inline

Get Array of active volume numbers

Returns: constant reference to active volume numbers

Definition at line 254 of file AliFMDGeometry.h.

Referenced by AliFMD::Init().

void AliFMDGeometry::AddActive ( Int_t id )

Add an active volume

Parameters

id	Register volume id to be active

Definition at line 300 of file AliFMDGeometry.cxx.

Referenced by ExtractGeomInfo(), and SetSectorOff().

void AliFMDGeometry::Build ( )

Make the geometry. This delegates to AliFMDGeometryBuilder

Definition at line 269 of file AliFMDGeometry.cxx.

Referenced by AliFMD::CreateGeometry(), and GetSiDensity().

void AliFMDGeometry::Detector2XYZ	(	UShort_t	detector,
		Char_t	ring,
		UShort_t	sector,
		UShort_t	strip,
		Double_t &	x,
		Double_t &	y,
		Double_t &	z
	)		const

Translate detector coordinates (detector, ring, sector, strip) to spatial coordinates (x, y, z) in the master reference frame of ALICE. The member function uses the transformations previously obtained from the TGeoManager.

Parameters

detector	Detector number
ring	Ring id
sector	Sector number
strip	Strip number
x	On return, X coordinate
y	On return, Y coordinate
z	On return, Z coordinate

Definition at line 410 of file AliFMDGeometry.cxx.

Referenced by AliFMDFancy::AliFancyDetector::AddMarker(), AliFMDPattern::AddMarker(), AliFMDDisplay::AddMarker(), FillEtas(), FullMapping(), GetGlobal(), GetSiDensity(), MakeFakeHits(), PhysicalCoordinates(), AliFMDESDRevertexer::PhysicalCoordinates(), AliFMDReconstructor::PhysicalCoordinates(), CheckAlign::ProcessDigit(), PoissonHit::ProcessHit(), DrawSDigits::ProcessSDigit(), DrawTrackRefs::ProcessTrackRef(), AliFMDv1::StepManager(), and TestESDPhi().

void AliFMDGeometry::Disable ( Int_t i )

Disable the ith detector

Parameters

i	IF true, disable sub-detector i

Definition at line 393 of file AliFMDGeometry.cxx.

Referenced by GetFMD3().

void AliFMDGeometry::Enable ( Int_t i )

Enable the ith detector

Parameters

i	IF true, enable sub-detector i

Definition at line 376 of file AliFMDGeometry.cxx.

Referenced by GetFMD3().

void AliFMDGeometry::ExtractGeomInfo ( )

Check the volume depth of some nodes, get the active volume numbers, and so forth.

Todo:: Here, we should actually also get the parameters of the shapes, like the verticies of the polygon shape that makes up the silicon sensor, the strip pitch, the ring radii, the z-positions, and so on - that is, all the geometric information we need for futher processing, such as simulation, digitization, reconstruction, etc.

Definition at line 595 of file AliFMDGeometry.cxx.

Referenced by AliFMD::Init(), and SetBuilder().

AliFMDDetector * AliFMDGeometry::GetDetector ( Int_t i ) const

Get description of a sub-detector

Parameters

i	Sub-detector #

Returns: Description of sub-detector, or 0

Definition at line 333 of file AliFMDGeometry.cxx.

Referenced by AliFMDPattern::Begin(), AliFMDFancy::Begin(), CheckAlign::CheckAlign(), Detector2XYZ(), AliFMDBaseDigitizer::DigitizeHits(), AliFMDFancy::End(), GetFMD3(), AliFMDFancy::AliFancyDetector::Init(), SetAlignableVolumes(), AliFMDv1::VMC2FMD(), and XYZ2Detector().

Int_t AliFMDGeometry::GetDetectorOff ( ) const

inline

Returns: Get detector offset in paths

Definition at line 200 of file AliFMDGeometry.h.

Referenced by AliFMDv1::VMC2FMD().

AliFMD1* AliFMDGeometry::GetFMD1 ( ) const

inline

Returns: Get FMD1 description

Definition at line 111 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

AliFMD2* AliFMDGeometry::GetFMD2 ( ) const

inline

Returns: Get FMD2 description

Definition at line 115 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

AliFMD3* AliFMDGeometry::GetFMD3 ( ) const

inline

Returns: Get FMD3 description

Definition at line 119 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

void AliFMDGeometry::GetGlobal	(	const AliRecPoint *	p,
		TVector3 &	pos,
		TMatrixF &	mat
	)		const

virtual

Get global coordinates cooresponding to a rec point.

Parameters

p	Reconstructed point.
pos	On return, the position
mat	On return, the material at post

Implements AliGeometry.

Definition at line 527 of file AliFMDGeometry.cxx.

Referenced by UseAssembly().

void AliFMDGeometry::GetGlobal	(	const AliRecPoint *	p,
		TVector3 &	pos
	)		const

virtual

Get global coordinates cooresponding to a rec point.

Parameters

p	Reconstructed point.
pos	On return, the position

Implements AliGeometry.

Definition at line 544 of file AliFMDGeometry.cxx.

AliFMDRing* AliFMDGeometry::GetInner ( ) const

inline

Returns: Get inner description

Definition at line 103 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

Int_t AliFMDGeometry::GetModuleOff ( ) const

inline

Returns: Get sensor offset in paths

Definition at line 204 of file AliFMDGeometry.h.

Referenced by AliFMDv1::VMC2FMD().

AliFMDRing* AliFMDGeometry::GetOuter ( ) const

inline

Returns: Get outer description

Definition at line 107 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

AliFMDRing * AliFMDGeometry::GetRing ( Char_t i ) const

Get description of a ring, i should be one of 'I' or 'O' (case insensitive). If an invalid parameter is passed, 0 (NULL) is returned.

Parameters

i Ring id

Returns: Description of ring, or 0

Definition at line 353 of file AliFMDGeometry.cxx.

Referenced by AliFMDFancy::AliFancyDetector::AddMarker(), AliFMDPattern::AddMarker(), CheckAlign::CheckAlign(), AliFMDParameters::GetEdepMip(), GetFMD3(), AliFMDPattern::Init(), and PrintOne().

Int_t AliFMDGeometry::GetRingOff ( ) const

inline

Returns: Get ring offset in paths

Definition at line 208 of file AliFMDGeometry.h.

Referenced by AliFMDv1::VMC2FMD().

Int_t AliFMDGeometry::GetSectorOff ( ) const

inline

Returns: Get ring sector in paths

Definition at line 212 of file AliFMDGeometry.h.

Referenced by AliFMDv1::VMC2FMD().

Double_t AliFMDGeometry::GetSiDensity ( ) const

inline

Returns: Density \( \rho\) of silicon

Definition at line 151 of file AliFMDGeometry.h.

Referenced by AliFMD::CreateMaterials(), and AliFMDParameters::GetEdepMip().

Bool_t AliFMDGeometry::Impact ( const TParticle * particle ) const

virtual

Check if particle will hit an active detector element.

Todo:: implement this function

Parameters

particle Track

Returns: true if particle will hit this detector

Implements AliGeometry.

Definition at line 566 of file AliFMDGeometry.cxx.

Referenced by UseAssembly().

void AliFMDGeometry::Init ( void )

virtual

Initialize the the singleton if not done so already

Definition at line 234 of file AliFMDGeometry.cxx.

Referenced by AliFMDESDRevertexer::AliFMDESDRevertexer(), CheckAlign::CheckAlign(), AliFMD::CreateMaterials(), FillEtas(), FullMapping(), PoissonHit::Init(), AliFMDReconstructor::Init(), CheckAlign::Init(), DrawSDigits::Init(), AliFMDDisplay::Init(), AliFMDPattern::Init(), AliFMDInput::Init(), AliFMDFancy::Init(), MakeFakeHits(), PrintSensorVertices(), AliFMDSurveyToAlignObjs::Run(), ShowCoordinates(), TestAlignable(), and TestESDPhi().

void AliFMDGeometry::InitTransformations ( Bool_t force = kFALSE )

virtual

Find all local <-> global transforms

Definition at line 249 of file AliFMDGeometry.cxx.

Referenced by AliFMDESDRevertexer::AliFMDESDRevertexer(), FillEtas(), FullMapping(), PoissonHit::Init(), AliFMDReconstructor::Init(), CheckAlign::Init(), DrawSDigits::Init(), AliFMDDisplay::Init(), AliFMDPattern::Init(), AliFMDInput::Init(), AliFMDFancy::Init(), MakeFakeHits(), AliFMDSurveyToAlignObjs::Run(), ShowCoordinates(), and TestESDPhi().

AliFMDGeometry * AliFMDGeometry::Instance ( )

static

singleton access

Returns: Singleton

Definition at line 95 of file AliFMDGeometry.cxx.

Referenced by AliFMD::AddAlignableVolumes(), AliFMDFancy::AliFancyDetector::AddMarker(), AliFMDPattern::AddMarker(), AliFMDDisplay::AddMarker(), AliFMDESDRevertexer::AliFMDESDRevertexer(), AliFMDPattern::Begin(), AliFMDFancy::Begin(), AliFMD::Browse(), CheckAlign::CheckAlign(), AliFMD::CreateGeometry(), AliFMD::CreateMaterials(), AliFMDBaseDigitizer::DigitizeHits(), AliFMDFancy::End(), AliFMDGeometryBuilder::Exec(), FillEtas(), FullMapping(), AliFMDParameters::GetEdepMip(), AliFMDFancy::AliFancyDetector::Init(), PoissonHit::Init(), AliFMDReconstructor::Init(), CheckAlign::Init(), DrawSDigits::Init(), AliFMDDisplay::Init(), AliFMDPattern::Init(), AliFMDInput::Init(), AliFMDFancy::Init(), AliFMD::Init(), MakeFakeHits(), PhysicalCoordinates(), AliFMDESDRevertexer::PhysicalCoordinates(), AliFMDReconstructor::PhysicalCoordinates(), PrintOne(), PrintSensorVertices(), CheckAlign::ProcessDigit(), PoissonHit::ProcessHit(), DrawSDigits::ProcessSDigit(), DrawTrackRefs::ProcessTrackRef(), AliFMDSurveyToAlignObjs::Run(), ShowCoordinates(), AliFMDv1::StepManager(), TestAlignable(), TestESDPhi(), and AliFMDv1::VMC2FMD().

Bool_t AliFMDGeometry::IsActive ( Int_t vol ) const

Check if volume vol is marked as active

Parameters

vol Volume ID

Returns: true if vol is declared active

Definition at line 316 of file AliFMDGeometry.cxx.

Referenced by SetSectorOff(), and AliFMDv1::StepManager().

Bool_t AliFMDGeometry::IsDetailed ( ) const

inline

Returns: true if geometry is detailed

Definition at line 282 of file AliFMDGeometry.h.

Referenced by AliFMDv1::StepManager().

AliFMDGeometry & AliFMDGeometry::operator= ( const AliFMDGeometry & other )

protected

Assignment operator

Parameters

other To assig from

Returns: reference to this.

Definition at line 208 of file AliFMDGeometry.cxx.

void AliFMDGeometry::SetActive	(	Int_t *	active,
		Int_t	n
	)

Set active volumes

Parameters

active	Active volume id array
n	elements of active

Definition at line 282 of file AliFMDGeometry.cxx.

Referenced by AliFMDGeometryBuilder::Exec(), AliFMD::Init(), and SetSectorOff().

void AliFMDGeometry::SetAlignableVolumes ( ) const

virtual

Declare alignable volumes

Definition at line 583 of file AliFMDGeometry.cxx.

Referenced by AliFMD::AddAlignableVolumes(), TestAlignable(), and UseAssembly().

void AliFMDGeometry::SetBuilder ( AliFMDGeometryBuilder * b )

inline

Set an external geometry builder

Parameters

b	Geometry builder

Definition at line 260 of file AliFMDGeometry.h.

void AliFMDGeometry::SetDetailed ( Bool_t det )

inline

Whether we are to use a detailed geometry or not

Parameters

det	if `true`, make a detailed geometry.

Definition at line 278 of file AliFMDGeometry.h.

Referenced by AliFMD::CreateGeometry().

void AliFMDGeometry::SetDetectorOff ( Int_t off )

inline

Parameters

off	Detector off-set set in geometry path

Definition at line 216 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

void AliFMDGeometry::SetModuleOff ( Int_t off )

inline

Parameters

off	Module off-set set in geometry path

Definition at line 220 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

void AliFMDGeometry::SetRingOff ( Int_t off )

inline

Parameters

off	Ring off-set set in geometry path

Definition at line 224 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

void AliFMDGeometry::SetSectorOff ( Int_t off )

inline

Parameters

off	Sectord off-set set in geometry path

Definition at line 228 of file AliFMDGeometry.h.

Referenced by AliFMDGeometryBuilder::Exec().

void AliFMDGeometry::UseAssembly ( Bool_t ass )

inline

Parameters

ass	Whether to use assemblies or not

Definition at line 286 of file AliFMDGeometry.h.

Referenced by AliFMD::CreateGeometry().

Bool_t AliFMDGeometry::XYZ2Detector	(	Double_t	x,
		Double_t	y,
		Double_t	z,
		UShort_t &	detector,
		Char_t &	ring,
		UShort_t &	sector,
		UShort_t &	strip
	)		const

Translate spatial coordinates (x,y,z) in the master reference frame of ALICE to the detector coordinates (detector, ring, sector, strip). Note, that if this method is to be used in reconstruction or the like, then the input z-coordinate should be corrected for the events interactions points z-coordinate, like

geom->XYZ2Detector(x,y,z-ipz,d,r,s,t);

Parameters

x	X coordinate
y	Y coordinate
z	Z coordinate
detector	On return, Detector number
ring	On return, Ring id
sector	On return, Sector number
strip	On return, Strip number

Returns: false of (x, y, z) is not within this detector.

Definition at line 443 of file AliFMDGeometry.cxx.

Referenced by GetSiDensity().

Bool_t AliFMDGeometry::XYZ2REtaPhiTheta	(	Double_t	x,
		Double_t	y,
		Double_t	z,
		Double_t &	r,
		Double_t &	eta,
		Double_t &	phi,
		Double_t &	theta
	)

static

Service function to convert Cartisean XYZ to r, eta, phi, and theta.

Note, that the z input should be corrected for the vertex location if needed.

Parameters

x	Cartisean X coordinate
y	Cartisean Y coordinate
z	Cartisean Z coordinate
r	On return, the radius
eta	On return, the pseudo-rapidity
phi	On return, the azimuthal angle
theta	On return, the polar angle;