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AliTPCEfield Class Reference

Calculation of the electric field. More...

#include <AliTPCEfield.h>

Inheritance diagram for AliTPCEfield:

Public Member Functions

 AliTPCEfield ()
 
 AliTPCEfield (const char *name, Int_t maxFreq, Bool_t is2D, Bool_t useLinear=kTRUE)
 
virtual ~AliTPCEfield ()
 
void SetRange (Double_t x0, Double_t x1, Double_t y0, Double_t y1, Double_t z00, Double_t z1=0)
 
void AddBoundaryLine (Double_t x0, Double_t y0, Double_t z0, Double_t v0, Double_t x1, Double_t y1, Double_t z1, Double_t v1, Int_t id=0, Int_t npoints=100)
 
TTree * GetTree (const char *tname="Boundary")
 
void MakeFitFunctions (Int_t maxFreq)
 
void FitField ()
 
void DumpField (Double_t gridSize=5, Double_t step=0.5)
 
Double_t EvalField (Int_t ifun, Double_t x, Double_t y, Double_t z, Int_t type=0)
 
Double_t Eval (Double_t x, Double_t y, Double_t z, Int_t type=0)
 
Double_t Field (Int_t ftype, Double_t ifx, Double_t ify, Double_t ifz, Double_t x, Double_t y, Double_t z)
 
Double_t FieldDn (Int_t ftype, Double_t ifx, Double_t ify, Double_t ifz, Int_t dn, Double_t x, Double_t y, Double_t z)
 
TMatrixD * MakeCorrelation (TMatrixD &matrix)
 
Double_t SinHNorm (Double_t x, Double_t norm)
 
Double_t CosHNorm (Double_t x, Double_t norm)
 

Static Public Member Functions

static Double_t EvalS (Double_t x, Double_t y, Double_t z, Int_t type=0)
 

Public Attributes

Double_t fMin [3]
 range of coordinates from Min to Max More...
 
Double_t fMax [3]
 
Double_t fScale
 scaling factor More...
 
Int_t fMaxFreq
 maximal frequency of expansion More...
 
Bool_t fIs2D
 flag for 2D field More...
 
Bool_t fUseLinear
 flag to use also linear term of the field More...
 
TTreeSRedirector * fWorkspace
 ! workspace More...
 
TMatrixD * fFitFunctions
 fit function description More...
 
TVectorD * fFitParam
 fit parameters - coeficients More...
 
TMatrixD * fFitCovar
 fit covariance More...
 
TLinearFitter * fFitter
 linear fitter - temporary solution - integrals to be calculated More...
 

Static Public Attributes

static AliTPCEfieldfgInstance =0
 instance of fied - for visualization More...
 

Detailed Description

Calculation of the electric field.

Solution of Laplace equation in cartesian system, with boundary condition.

See details: http://web.mit.edu/6.013_book/www/chapter5/5.10.html

Definition at line 16 of file AliTPCEfield.h.

Constructor & Destructor Documentation

AliTPCEfield::AliTPCEfield ( )

Definition at line 36 of file AliTPCEfield.cxx.

AliTPCEfield::AliTPCEfield ( const char *  name,
Int_t  maxFreq,
Bool_t  is2D,
Bool_t  useLinear = kTRUE 
)

Definition at line 51 of file AliTPCEfield.cxx.

AliTPCEfield::~AliTPCEfield ( )
virtual

Destructor

Definition at line 124 of file AliTPCEfield.cxx.

Member Function Documentation

void AliTPCEfield::AddBoundaryLine ( Double_t  x0,
Double_t  y0,
Double_t  z0,
Double_t  v0,
Double_t  x1,
Double_t  y1,
Double_t  z1,
Double_t  v1,
Int_t  id = 0,
Int_t  npoints = 100 
)

Add a e field boundary line From point (x0,y0) to point (x1,y1) Linear decrease of potential is assumed Boundary can be identified using boundary ID The line is written into tree Boundary

Definition at line 142 of file AliTPCEfield.cxx.

Referenced by MakeTPC2DExample().

Double_t AliTPCEfield::CosHNorm ( Double_t  x,
Double_t  norm 
)
inline

Definition at line 42 of file AliTPCEfield.h.

Referenced by Field(), and FieldDn().

void AliTPCEfield::DumpField ( Double_t  gridSize = 5,
Double_t  step = 0.5 
)

Definition at line 380 of file AliTPCEfield.cxx.

Double_t AliTPCEfield::Eval ( Double_t  x,
Double_t  y,
Double_t  z,
Int_t  type = 0 
)

Evaluate function ifun at position gx amd gy type == 0 - field == 1 - Ex == 2 - Ey == 3 - Ez

Definition at line 278 of file AliTPCEfield.cxx.

Referenced by DumpField(), and EvalS().

Double_t AliTPCEfield::EvalField ( Int_t  ifun,
Double_t  x,
Double_t  y,
Double_t  z,
Int_t  type = 0 
)

Evaluate function ifun at position gx amd gy type == 0 - field == 1 - Ex == 2 - Ey == 3 - Ez

Definition at line 260 of file AliTPCEfield.cxx.

Referenced by Eval(), and FitField().

Double_t AliTPCEfield::EvalS ( Double_t  x,
Double_t  y,
Double_t  z,
Int_t  type = 0 
)
static

static evaluation - possible to use it in the TF1

Definition at line 298 of file AliTPCEfield.cxx.

Double_t AliTPCEfield::Field ( Int_t  ftype,
Double_t  ifx,
Double_t  ify,
Double_t  ifz,
Double_t  x,
Double_t  y,
Double_t  z 
)

Field component in f frequency

Definition at line 175 of file AliTPCEfield.cxx.

Referenced by EvalField().

Double_t AliTPCEfield::FieldDn ( Int_t  ftype,
Double_t  ifx,
Double_t  ify,
Double_t  ifz,
Int_t  dn,
Double_t  x,
Double_t  y,
Double_t  z 
)

Field component in f frequency

Definition at line 213 of file AliTPCEfield.cxx.

Referenced by EvalField().

void AliTPCEfield::FitField ( )

Fit the e field Minimize chi2 residuals at the boundary points ?Tempoary sollution - integrals can be calculated analytically -

Definition at line 304 of file AliTPCEfield.cxx.

TTree * AliTPCEfield::GetTree ( const char *  tname = "Boundary")

Definition at line 169 of file AliTPCEfield.cxx.

Referenced by FitField().

TMatrixD * AliTPCEfield::MakeCorrelation ( TMatrixD &  matrix)

Definition at line 365 of file AliTPCEfield.cxx.

void AliTPCEfield::MakeFitFunctions ( Int_t  maxFreq)

fit functions = \( f(x,y,z) = fx(x)*fy(y)*fz(z) \) function can be of following types: 0 - constant 1 - linear 2 - hypx 3 - hypy 4 - hypz

Definition at line 69 of file AliTPCEfield.cxx.

Referenced by AliTPCEfield().

void AliTPCEfield::SetRange ( Double_t  x0,
Double_t  x1,
Double_t  y0,
Double_t  y1,
Double_t  z00,
Double_t  z1 = 0 
)

Set the ranges - coordinates are rescaled in order to use proper cos,sin expansion in scaled space

Definition at line 130 of file AliTPCEfield.cxx.

Referenced by MakeTPC2DExample().

Double_t AliTPCEfield::SinHNorm ( Double_t  x,
Double_t  norm 
)
inline

Definition at line 41 of file AliTPCEfield.h.

Referenced by Field(), and FieldDn().

Member Data Documentation

TMatrixD* AliTPCEfield::fFitCovar

fit covariance

Definition at line 54 of file AliTPCEfield.h.

Referenced by FitField(), and MakeFitFunctions().

TMatrixD* AliTPCEfield::fFitFunctions

fit function description

Definition at line 52 of file AliTPCEfield.h.

Referenced by Eval(), EvalField(), FitField(), and MakeFitFunctions().

TVectorD* AliTPCEfield::fFitParam

fit parameters - coeficients

Definition at line 53 of file AliTPCEfield.h.

Referenced by FitField(), and MakeFitFunctions().

TLinearFitter* AliTPCEfield::fFitter

linear fitter - temporary solution - integrals to be calculated

Definition at line 55 of file AliTPCEfield.h.

Referenced by FitField().

AliTPCEfield * AliTPCEfield::fgInstance =0
static

instance of fied - for visualization

Definition at line 56 of file AliTPCEfield.h.

Referenced by AliTPCEfield(), and EvalS().

Bool_t AliTPCEfield::fIs2D

flag for 2D field

Definition at line 48 of file AliTPCEfield.h.

Referenced by MakeFitFunctions(), and SetRange().

Double_t AliTPCEfield::fMax[3]

Definition at line 45 of file AliTPCEfield.h.

Referenced by AliTPCEfield(), DumpField(), Eval(), FitField(), and SetRange().

Int_t AliTPCEfield::fMaxFreq

maximal frequency of expansion

Definition at line 47 of file AliTPCEfield.h.

Referenced by DumpField().

Double_t AliTPCEfield::fMin[3]

range of coordinates from Min to Max

Definition at line 44 of file AliTPCEfield.h.

Referenced by AliTPCEfield(), DumpField(), Eval(), FitField(), and SetRange().

Double_t AliTPCEfield::fScale

scaling factor

Definition at line 46 of file AliTPCEfield.h.

Referenced by DumpField(), Eval(), FitField(), and SetRange().

Bool_t AliTPCEfield::fUseLinear

flag to use also linear term of the field

Definition at line 49 of file AliTPCEfield.h.

Referenced by MakeFitFunctions().

TTreeSRedirector* AliTPCEfield::fWorkspace

! workspace

Definition at line 51 of file AliTPCEfield.h.

Referenced by AliTPCEfield(), GetTree(), and ~AliTPCEfield().


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