#include <AliTPCExBBShape.h>

Inheritance diagram for AliTPCExBBShape:

Public Member Functions
	AliTPCExBBShape ()

virtual	~AliTPCExBBShape ()

virtual Bool_t	AddCorrectionCompact (AliTPCCorrection *corr, Double_t weight)

virtual void	Init ()

virtual void	Update (const TTimeStamp &timeStamp)

virtual void	SetOmegaTauT1T2 (Float_t omegaTau, Float_t t1, Float_t t2)

void	SetC1C2 (Float_t c1, Float_t c2)

Float_t	GetC1 () const

Float_t	GetC2 () const

void	SetBField (const AliMagF *bField)

AliMagF *	GetBField () const

virtual void	GetCorrection (const Float_t x[], const Short_t roc, Float_t dx[])

void	GetBxAndByOverBz (const Float_t x[], const Short_t roc, Float_t BxByOverBz[])

virtual void	Print (Option_t *option="") const

Double_t	GetScaling () const

Public Member Functions inherited from AliTPCCorrection
	AliTPCCorrection ()

	AliTPCCorrection (const char name, const char title)

virtual	~AliTPCCorrection ()

void	CorrectPoint (Float_t x[], Short_t roc)

void	CorrectPointLocal (Float_t x[], Short_t roc)

void	CorrectPoint (const Float_t x[], Short_t roc, Float_t xp[])

virtual void	GetCorrectionDz (const Float_t x[], Short_t roc, Float_t dx[], Float_t delta)

virtual void	GetCorrectionIntegralDz (const Float_t x[], Short_t roc, Float_t dx[], Float_t delta)

void	DistortPoint (Float_t x[], Short_t roc)

void	DistortPointLocal (Float_t x[], Short_t roc)

void	DistortPoint (const Float_t x[], Short_t roc, Float_t xp[])

virtual void	GetDistortion (const Float_t x[], Short_t roc, Float_t dx[])

virtual void	GetDistortionDz (const Float_t x[], Short_t roc, Float_t dx[], Float_t delta)

virtual void	GetDistortionIntegralDz (const Float_t x[], Short_t roc, Float_t dx[], Float_t delta)

virtual void	SetCorrScaleFactor (Float_t)

virtual Float_t	GetCorrScaleFactor () const

TH2F *	CreateHistoDRinXY (Float_t z=10., Int_t nx=100, Int_t ny=100)

TH2F *	CreateHistoDRPhiinXY (Float_t z=10., Int_t nx=100, Int_t nphi=100)

TH2F *	CreateHistoDZinXY (Float_t z=10., Int_t nx=100, Int_t ny=100)

TH2F *	CreateHistoDRinZR (Float_t phi=0., Int_t nZ=100, Int_t nR=100)

TH2F *	CreateHistoDRPhiinZR (Float_t phi=0., Int_t nZ=100, Int_t nR=100)

TH2F *	CreateHistoDZinZR (Float_t phi=0., Int_t nZ=100, Int_t nR=100)

TTree *	CreateDistortionTree (Double_t step=5)

AliExternalTrackParam *	FitDistortedTrack (AliExternalTrackParam &trackIn, Double_t refX, Int_t dir, TTreeSRedirector *pcstream)

void	StoreInOCDB (Int_t startRun, Int_t endRun, const char *comment=0)

void	FastSimDistortedVertex (Double_t orgVertex[3], Int_t nTracks, AliESDVertex &aV, AliESDVertex &avOrg, AliESDVertex &cV, AliESDVertex &cvOrg, TTreeSRedirector *const pcstream, Double_t etaCuts)

Static Public Member Functions
static Double_t	GetBFieldXYZ (Double_t gx, Double_t gy, Double_t gz, Int_t axisType)

Static Public Member Functions inherited from AliTPCCorrection
static void	MakeDistortionMap (THnSparse his0, TTreeSRedirector pcstream, const char *hname, Int_t run, Float_t refX, Int_t type, Int_t integ=1)

static void	MakeDistortionMapCosmic (THnSparse his0, TTreeSRedirector pcstream, const char *hname, Int_t run, Float_t refX, Int_t type)

static void	MakeDistortionMapSector (THnSparse his0, TTreeSRedirector pcstream, const char *hname, Int_t run, Int_t type)

static void	MakeTrackDistortionTree (TTree tinput, Int_t dtype, Int_t ptype, const TObjArray corrArray, Int_t step=1, Int_t offset=0, Bool_t debug=0)

static void	MakeSectorDistortionTree (TTree tinput, Int_t dtype, Int_t ptype, const TObjArray corrArray, Int_t step=1, Int_t offset=0, Bool_t debug=0)

static void	MakeLaserDistortionTreeOld (TTree tree, TObjArray corrArray, Int_t itype)

static void	MakeLaserDistortionTree (TTree tree, TObjArray corrArray, Int_t itype)

static void	AddVisualCorrection (AliTPCCorrection *corr, Int_t position)

static AliTPCCorrection *	GetVisualCorrection (Int_t position)

static AliTPCCorrection *	GetVisualCorrection (const char *corName)

static TObjArray *	GetVisualCorrections ()

static Double_t	GetCorrSector (Double_t sector, Double_t r, Double_t kZ, Int_t axisType, Int_t corrType=0)

static Double_t	GetCorrXYZ (Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0)

static Double_t	GetCorrXYZDz (Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0, Double_t delta=5)

static Double_t	GetCorrXYZIntegrateZ (Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0, Double_t delta=5)

static Double_t	GetDistXYZ (Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0)

static Double_t	GetDistXYZDz (Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0, Double_t delta=5)

static Double_t	GetDistXYZIntegrateZ (Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType=0, Double_t delta=5)

Private Member Functions
AliTPCExBBShape &	operator= (const AliTPCExBBShape &)

	AliTPCExBBShape (const AliTPCExBBShape &)

Private Attributes
Float_t	fC1
	coefficient C1 (compare Jim Thomas's notes for definitions) More...

Float_t	fC2
	coefficient C2 (compare Jim Thomas's notes for definitions) More...

Float_t	fScaling
	scaling factor to rescale distortion - for tests purposes only More...

AliMagF *	fBField
	pointer to magnetic field More...

Additional Inherited Members
Public Types inherited from AliTPCCorrection
enum	CompositionType { kParallel, kQueue }

Protected Types inherited from AliTPCCorrection
enum	{ kNR = 72 }

enum	{ kNPhi = 18*10+1 }

enum	{ kNZ = 166 }

Protected Member Functions inherited from AliTPCCorrection
TH2F *	CreateTH2F (const char name, const char title, const char xlabel, const char ylabel, const char *zlabel, Int_t nbinsx, Double_t xlow, Double_t xup, Int_t nbinsy, Double_t ylow, Double_t yup)

void	Interpolate2DEdistortion (Int_t order, Double_t r, Double_t z, const Double_t er[kNZ][kNR], Double_t &erValue)

void	Interpolate3DEdistortion (Int_t order, Double_t r, Float_t phi, Double_t z, const Double_t er[kNZ][kNPhi][kNR], const Double_t ephi[kNZ][kNPhi][kNR], const Double_t ez[kNZ][kNPhi][kNR], Double_t &erValue, Double_t &ephiValue, Double_t &ezValue)

Double_t	Interpolate2DTable (Int_t order, Double_t x, Double_t y, Int_t nx, Int_t ny, const Double_t xv[], const Double_t yv[], const TMatrixD &array)

Double_t	Interpolate3DTable (Int_t order, Double_t x, Double_t y, Double_t z, Int_t nx, Int_t ny, Int_t nz, const Double_t xv[], const Double_t yv[], const Double_t zv[], TMatrixD **arrayofArrays)

Double_t	Interpolate (const Double_t xArray[], const Double_t yArray[], Int_t order, Double_t x)

void	Search (Int_t n, const Double_t xArray[], Double_t x, Int_t &low)

Float_t	Interpolate2DTable (Int_t order, Double_t x, Double_t y, Int_t nx, Int_t ny, const Double_t xv[], const Double_t yv[], const TMatrixF &array)

Float_t	Interpolate3DTable (Int_t order, Double_t x, Double_t y, Double_t z, Int_t nx, Int_t ny, Int_t nz, const Double_t xv[], const Double_t yv[], const Double_t zv[], TMatrixF **arrayofArrays)

Float_t	Interpolate (const Double_t xArray[], const Float_t yArray[], Int_t order, Double_t x)

virtual Int_t	IsPowerOfTwo (Int_t i) const

void	PoissonRelaxation2D (TMatrixD &arrayV, TMatrixD &chargeDensity, TMatrixD &arrayErOverEz, TMatrixD &arrayDeltaEz, Int_t rows, Int_t columns, Int_t iterations, Bool_t rocDisplacement=kTRUE)

void	PoissonRelaxation3D (TMatrixD arrayofArrayV, TMatrixD arrayofChargeDensities, TMatrixD arrayofEroverEz, TMatrixD arrayofEPhioverEz, TMatrixD **arrayofEz, Int_t rows, Int_t columns, Int_t phislices, Float_t deltaphi, Int_t iterations, Int_t summetry, Bool_t rocDisplacement=kTRUE)

void	SetIsLocal (Bool_t isLocal)

Bool_t	IsLocal () const

Protected Attributes inherited from AliTPCCorrection
Double_t	fgkRList [kNR]
	points in the radial direction (for the lookup table) More...

Double_t	fgkPhiList [kNPhi]
	points in the phi direction (for the lookup table) More...

Double_t	fgkZList [kNZ]
	points in the z direction (for the lookup table) More...

Int_t	fILow

Int_t	fJLow

Int_t	fKLow
	variable to help in the interpolation More...

Double_t	fT1
	tensor term of wt - T1 More...

Double_t	fT2
	tensor term of wt - T2 More...

Bool_t	fIsLocal
	switch to indicate that the distortion is a local vector drphi/dz, dr/dz More...

Static Protected Attributes inherited from AliTPCCorrection
static const Double_t	fgkTPCZ0 = 249.7
	nominal gating grid position More...

static const Double_t	fgkIFCRadius = 83.5
	Mean Radius of the Inner Field Cage ( 82.43 min, 83.70 max) (cm) More...

static const Double_t	fgkOFCRadius = 254.5
	Mean Radius of the Outer Field Cage (252.55 min, 256.45 max) (cm) More...

static const Double_t	fgkZOffSet = 0.2
	Offset from CE: calculate all distortions closer to CE as if at this point. More...

static const Double_t	fgkCathodeV = -100000.0
	Cathode Voltage (volts) More...

static const Double_t	fgkGG = -70.0
	Gating Grid voltage (volts) More...

static const Double_t	fgkdvdE = 0.0024
	[cm/V] drift velocity dependency on the E field (from Magboltz for NeCO2N2 at standard environment) More...

static const Double_t	fgkEM = -1.602176487e-19/9.10938215e-31
	charge/mass in [C/kg] More...

static const Double_t	fgke0 = 8.854187817e-12
	vacuum permittivity [A·s/(V·m)] More...

static TObjArray *	fgVisualCorrection =0
	array of orrection for visualization More...

Detailed Description

AliTPCExBBShape class.

AliExBBShape class.

The class calculates the space point distortions due to the B field shape imperfections using a second order technique based on integrals over Bz (e.g. int By/Bz) obtained via the AliMagF class. The essential input for this class is the magnetic field maps which can be set via the function SetBField.

The class allows "effective Omega Tau" corrections.

Picture from ROOT macro

Author: Magnus Mager, Jim Thomas, Stefan Rossegger

Date: 27/04/2010

Definition at line 25 of file AliTPCExBBShape.h.

Constructor & Destructor Documentation

AliTPCExBBShape::AliTPCExBBShape ( )

default constructor

Definition at line 27 of file AliTPCExBBShape.cxx.

AliTPCExBBShape::~AliTPCExBBShape ( )

virtual

virtual destructor

Definition at line 37 of file AliTPCExBBShape.cxx.

AliTPCExBBShape::AliTPCExBBShape ( const AliTPCExBBShape & )

private

Member Function Documentation

Bool_t AliTPCExBBShape::AddCorrectionCompact	(	AliTPCCorrection *	corr,
		Double_t	weight
	)

virtual

Add correction and make them compact Assumptions:

origin of distortion/correction are additive
only correction ot the same type supported ()

Reimplemented from AliTPCCorrection.

Definition at line 45 of file AliTPCExBBShape.cxx.

AliMagF* AliTPCExBBShape::GetBField ( ) const

inline

Definition at line 47 of file AliTPCExBBShape.h.

Double_t AliTPCExBBShape::GetBFieldXYZ	(	Double_t	gx,
		Double_t	gy,
		Double_t	gz,
		Int_t	axisType
	)

static

return B field at given x,y,z

Definition at line 172 of file AliTPCExBBShape.cxx.

void AliTPCExBBShape::GetBxAndByOverBz	(	const Float_t	x[],
		const Short_t	roc,
		Float_t	BxByOverBz[]
	)

This function is purely for calibration purposes Returns the via AliMagF obtaind B field integrals

Definition at line 131 of file AliTPCExBBShape.cxx.

Float_t AliTPCExBBShape::GetC1 ( ) const

inline

Definition at line 42 of file AliTPCExBBShape.h.

Float_t AliTPCExBBShape::GetC2 ( ) const

inline

Definition at line 43 of file AliTPCExBBShape.h.

void AliTPCExBBShape::GetCorrection	(	const Float_t	x[],
		const Short_t	roc,
		Float_t	dx[]
	)

virtual

Calculates the space point corrections of the B field inperfections (B field shape)

Reimplemented from AliTPCCorrection.

Definition at line 104 of file AliTPCExBBShape.cxx.

Double_t AliTPCExBBShape::GetScaling ( ) const

inline

Definition at line 54 of file AliTPCExBBShape.h.

void AliTPCExBBShape::Init ( )

virtual

Initialization funtion

Reimplemented from AliTPCCorrection.

Definition at line 66 of file AliTPCExBBShape.cxx.

AliTPCExBBShape& AliTPCExBBShape::operator= ( const AliTPCExBBShape & )

private

void AliTPCExBBShape::Print ( Option_t * option = "" ) const

virtual

Print function to check the settings (e.g. voltage offsets) option=="a" prints details of the B field settings and the C0 and C1 coefficents (for calibration purposes)

Reimplemented from AliTPCCorrection.

Definition at line 157 of file AliTPCExBBShape.cxx.

Referenced by RegisterAliTPCExBShape().

void AliTPCExBBShape::SetBField ( const AliMagF * bField )

inline

Definition at line 46 of file AliTPCExBBShape.h.

Referenced by AliTPCCorrectionDemo(), Init(), MakeComposedCorrection(), MakeDistortionMap(), RegisterAliTPCExBShape(), and Update().