This implementation AliTPCExB is using an aproximate calculation of the ExB effect. More...

#include <AliTPCExBFirst.h>

Inheritance diagram for AliTPCExBFirst:

Public Member Functions
	AliTPCExBFirst ()

	AliTPCExBFirst (const AliMagF *bField, Double_t driftVelocity, Int_t nx=100, Int_t ny=100, Int_t nz=100)

virtual	~AliTPCExBFirst ()

virtual void	Correct (const Double_t position, Double_t corrected)

void	TestThisBeautifulObject (const char *fileName)

void	SetDriftVelocity (Double_t driftVelocity)

Public Member Functions inherited from AliTPCExB
	AliTPCExB ()

AliTPCExB &	operator= (const AliTPCExB &exb)

	AliTPCExB (const AliTPCExB &exb)

virtual	~AliTPCExB ()

virtual void	CorrectInverse (const Double_t position, Double_t corrected)

void	TestExB (const char *fileName)

Double_t	Eval (Int_t type, Double_t r, Double_t phi, Double_t z)

Double_t	SEval (Int_t type, Double_t r, Double_t phi, Double_t z)

Protected Attributes
Double_t	fDriftVelocity
	The electron drift velocity. More...

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

	AliTPCExBFirst (const AliTPCExBFirst &)

void	ConstructCommon (const AliMagF *bField)

void	GetMeanFields (Double_t rx, Double_t ry, Double_t rz, Double_t Bx, Double_t By) const

Private Attributes
Int_t	fkNX
	field mesh points in x direction More...

Int_t	fkNY
	field mesh points in y direction More...

Int_t	fkNZ
	field mesh points in z direction More...

Double_t	fkXMin
	the first grid point in x direction More...

Double_t	fkXMax
	the last grid point in x direction More...

Double_t	fkYMin
	the first grid point in y direction More...

Double_t	fkYMax
	the last grid point in y direction More...

Double_t	fkZMin
	the first grid point in z direction More...

Double_t	fkZMax
	the last grid point in z direction More...

Int_t	fkNMean

Double_t *	fkMeanBx
	the mean field in x direction upto a certain z value More...

Double_t *	fkMeanBy
	the mean field in y direction upto a certain z value More...

Double_t	fkMeanBz
	the mean field in z direction inside the TPC volume More...

Static Private Attributes
static const Double_t	fgkEM =1.602176487e-19/9.10938215e-31
	! elementary charge over electron mass (C/kg) More...

static const Double_t	fgkDriftField =-40.e3
	! the TPC drift field (V/m) (modulus) More...

Additional Inherited Members
Static Public Member Functions inherited from AliTPCExB
static Double_t	GetDr (Double_t r, Double_t phi, Double_t z, Double_t bz=5)

static Double_t	GetDrphi (Double_t r, Double_t phi, Double_t z, Double_t bz=5)

static Double_t	GetDphi (Double_t r, Double_t phi, Double_t z, Double_t bz=5)

static Double_t	GetDz (Double_t r, Double_t phi, Double_t z, Double_t bz=5)

static AliTPCExB *	Instance ()

static void	SetInstance (AliTPCExB *const param)

static void	RegisterField (Int_t index, AliMagF *magf)

static Double_t	GetBx (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBy (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBz (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBr (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBrfi (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBxI (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetByI (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBzI (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBrI (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	GetBrfiI (Double_t r, Double_t phi, Double_t z, Int_t index=0)

static Double_t	EvalMat (const TVectorD &vec, Double_t r, Double_t phi, Double_t z)

Detailed Description

This implementation AliTPCExB is using an aproximate calculation of the ExB effect.

An approximate (first order) implementation of the ExB effect.

Therefore the drift ODE is Taylor expanded and only the first order part is taken.

The ExB correction map is stored in the calib DB To test current version:

char *storage = "local://OCDBres"
Int_t RunNumber=0;
AliCDBManager::Instance()->SetDefaultStorage(storage);
AliCDBManager::Instance()->SetRun(RunNumber)
AliTPCExBFirst * exb = AliTPCcalibDB::Instance()->GetExB();
//  exb->TestExB("exb.root");
// TFile f("exb.root");
//positions->Draw("drphi");

Definition at line 14 of file AliTPCExBFirst.h.

Constructor & Destructor Documentation

AliTPCExBFirst::AliTPCExBFirst ( )

purely for I/O

Definition at line 52 of file AliTPCExBFirst.cxx.

AliTPCExBFirst::AliTPCExBFirst	(	const AliMagF *	bField,
		Double_t	driftVelocity,
		Int_t	nx = `100`,
		Int_t	ny = `100`,
		Int_t	nz = `100`
	)

The constructor. One has to supply a magnetic field and an (initial) drift velocity. Since some kind of lookuptable is created the number of its meshpoints can be supplied.

ConstructCommon(0,bField);

Definition at line 64 of file AliTPCExBFirst.cxx.

AliTPCExBFirst::~AliTPCExBFirst ( )

virtual

destruct the poor object.

Definition at line 124 of file AliTPCExBFirst.cxx.

AliTPCExBFirst::AliTPCExBFirst ( const AliTPCExBFirst & )

private

Member Function Documentation

void AliTPCExBFirst::ConstructCommon ( const AliMagF * bField )

private

THIS IS PRIVATE! (a helper for the constructor)

Definition at line 207 of file AliTPCExBFirst.cxx.

Referenced by AliTPCExBFirst().

void AliTPCExBFirst::Correct	(	const Double_t *	position,
		Double_t *	corrected
	)

virtual

correct for the distortion

Implements AliTPCExB.

Definition at line 131 of file AliTPCExBFirst.cxx.

Referenced by TestThisBeautifulObject().

void AliTPCExBFirst::GetMeanFields	(	Double_t	rx,
		Double_t	ry,
		Double_t	rz,
		Double_t *	Bx,
		Double_t *	By
	)		const

private

THIS IS PRIVATE! (calculates the mean field utilising a lookup table)

Definition at line 250 of file AliTPCExBFirst.cxx.

Referenced by Correct().

AliTPCExBFirst& AliTPCExBFirst::operator= ( const AliTPCExBFirst & )

private

void AliTPCExBFirst::SetDriftVelocity ( Double_t driftVelocity )

inline

Definition at line 23 of file AliTPCExBFirst.h.

void AliTPCExBFirst::TestThisBeautifulObject ( const char * fileName )

well, as the name sais...

Definition at line 169 of file AliTPCExBFirst.cxx.

Member Data Documentation

Double_t AliTPCExBFirst::fDriftVelocity

protected

The electron drift velocity.

Definition at line 25 of file AliTPCExBFirst.h.

Referenced by Correct(), and SetDriftVelocity().

const Double_t AliTPCExBFirst::fgkDriftField =-40.e3

staticprivate

! the TPC drift field (V/m) (modulus)

Definition at line 51 of file AliTPCExBFirst.h.

Referenced by Correct().

const Double_t AliTPCExBFirst::fgkEM =1.602176487e-19/9.10938215e-31

staticprivate

! elementary charge over electron mass (C/kg)

Definition at line 50 of file AliTPCExBFirst.h.

Double_t* AliTPCExBFirst::fkMeanBx

private

the mean field in x direction upto a certain z value

Definition at line 46 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), GetMeanFields(), and ~AliTPCExBFirst().

Double_t* AliTPCExBFirst::fkMeanBy

private

the mean field in y direction upto a certain z value

Definition at line 48 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), GetMeanFields(), and ~AliTPCExBFirst().

Double_t AliTPCExBFirst::fkMeanBz

private

the mean field in z direction inside the TPC volume

Definition at line 49 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and Correct().

Int_t AliTPCExBFirst::fkNMean

private

size of the tablE the mean fields

Definition at line 44 of file AliTPCExBFirst.h.

Referenced by ConstructCommon().

Int_t AliTPCExBFirst::fkNX

private

field mesh points in x direction

Definition at line 35 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Int_t AliTPCExBFirst::fkNY

private

field mesh points in y direction

Definition at line 36 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Int_t AliTPCExBFirst::fkNZ

private

field mesh points in z direction

Definition at line 37 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Double_t AliTPCExBFirst::fkXMax

private

the last grid point in x direction

Definition at line 39 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Double_t AliTPCExBFirst::fkXMin

private

the first grid point in x direction

Definition at line 38 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Double_t AliTPCExBFirst::fkYMax

private

the last grid point in y direction

Definition at line 41 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Double_t AliTPCExBFirst::fkYMin

private

the first grid point in y direction

Definition at line 40 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Double_t AliTPCExBFirst::fkZMax

private

the last grid point in z direction

Definition at line 43 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

Double_t AliTPCExBFirst::fkZMin

private

the first grid point in z direction

Definition at line 42 of file AliTPCExBFirst.h.

Referenced by ConstructCommon(), and GetMeanFields().

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

TPC/TPCbase/AliTPCExBFirst.h
TPC/TPCbase/AliTPCExBFirst.cxx

Public Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation