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AliTPCExBEffectiveSector Class Reference

Correct for the rest of ExB effect which are not covered yet by physical models. More...

#include <AliTPCExBEffectiveSector.h>

Inheritance diagram for AliTPCExBEffectiveSector:

Public Member Functions

 AliTPCExBEffectiveSector ()
 
virtual ~AliTPCExBEffectiveSector ()
 
virtual void Init ()
 
virtual void Update (const TTimeStamp &timeStamp)
 
virtual void SetOmegaTauT1T2 (Float_t omegaTau, Float_t t1, Float_t t2)
 
Float_t GetC1 () const
 
Float_t GetC0 () const
 
void Print (const Option_t *option) const
 
virtual void GetCorrection (const Float_t x[], const Short_t roc, Float_t dx[])
 
- Public Member Functions inherited from AliTPCCorrection
 AliTPCCorrection ()
 
 AliTPCCorrection (const char *name, const char *title)
 
virtual ~AliTPCCorrection ()
 
virtual Bool_t AddCorrectionCompact (AliTPCCorrection *corr, Double_t weight)
 
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
 
virtual void Print (Option_t *option="") 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, Int_t type=0)
 
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)
 

Public Attributes

Double_t fC0
 coefficient C0 (compare Jim Thomas's notes for definitions) More...
 
Double_t fC1
 coefficient C1 (compare Jim Thomas's notes for definitions) More...
 
TH3F * fCorrectionR
 radial correction More...
 
TH3F * fCorrectionRPhi
 r-phi correction More...
 
TH3F * fCorrectionZ
 z correction More...
 

Private Member Functions

 AliTPCExBEffectiveSector (const AliTPCExBEffectiveSector &)
 
AliTPCExBEffectiveSectoroperator= (const AliTPCExBEffectiveSector &)
 

Additional Inherited Members

- Public Types inherited from AliTPCCorrection
enum  CompositionType { kParallel, kQueue }
 
enum  IntegrationType { kIntegral, kDifferential }
 
- 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 AliTPCCorrectionGetVisualCorrection (Int_t position)
 
static AliTPCCorrectionGetVisualCorrection (const char *corName)
 
static TObjArrayGetVisualCorrections ()
 
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)
 
static Double_t GetCorrectionSector (Double_t sector, Double_t r, Double_t kZ, Int_t axisType, Int_t corrType=0)
 
static Double_t GetDistortionSector (Double_t sector, Double_t r, Double_t kZ, Int_t axisType, Int_t corrType=0)
 
- 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, IntegrationType integrationType=kIntegral)
 
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...
 
IntegrationType fIntegrationType
 Presentation of the underlying corrections, integrated, or differential. 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)/hera/alice/wiechula/calib/guiTrees. 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 TObjArrayfgVisualCorrection =0
 array of orrection for visualization More...
 

Detailed Description

Correct for the rest of ExB effect which are not covered yet by physical models.

Motivation: ExB correction: dr = c0* integral(Er/Ez) + c1* integral(Erphi/Ez) drphi = -c1* integral(Er/Ez) + c0* integral(Erphi/Ez) Where: wt = Bz*(k*vdrift/E) ~ 0.3 at B=0.5 T c0 = 1/(1+T2*T2*wt*wt) c1 = T1*wt/(1+T1*T1*wt*wt)

3 correction maps 0 implemented as histogram used R-Phi correction map obtained minimizing residuals betwee the track and space points (AliTPCcalibAlign class). Track is defined using the points from the refernce plain at the middle of the TPC and vertex Corrected primar tracks straight pointing to the primary vertex

R distortion - obtained using the cluster residuals in the setup with plus and minus field Only high momenta tracks used for this calibration (1 GeV threshold) drphi_plus-drphi_minus=-2*c1 integral(Er/Ez)

  • Erphi/Ez cancels
Author
Maarian Ivanov, Jim Thomas, Magnus Mager, Stefan Rossegger
Date
02/05/2010

Definition at line 17 of file AliTPCExBEffectiveSector.h.

Constructor & Destructor Documentation

AliTPCExBEffectiveSector::AliTPCExBEffectiveSector ( )

Definition at line 64 of file AliTPCExBEffectiveSector.cxx.

AliTPCExBEffectiveSector::~AliTPCExBEffectiveSector ( )
virtual

default destructor

Definition at line 76 of file AliTPCExBEffectiveSector.cxx.

AliTPCExBEffectiveSector::AliTPCExBEffectiveSector ( const AliTPCExBEffectiveSector )
private

Member Function Documentation

Float_t AliTPCExBEffectiveSector::GetC0 ( ) const
inline

Definition at line 31 of file AliTPCExBEffectiveSector.h.

Float_t AliTPCExBEffectiveSector::GetC1 ( ) const
inline

Definition at line 30 of file AliTPCExBEffectiveSector.h.

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

Calculates the correction using the lookup table (histogram) of distortion The histogram is created as poscl - postrack

Reimplemented from AliTPCCorrection.

Definition at line 118 of file AliTPCExBEffectiveSector.cxx.

void AliTPCExBEffectiveSector::Init ( )
virtual

Initialization funtion

Reimplemented from AliTPCCorrection.

Definition at line 86 of file AliTPCExBEffectiveSector.cxx.

AliTPCExBEffectiveSector& AliTPCExBEffectiveSector::operator= ( const AliTPCExBEffectiveSector )
private
void AliTPCExBEffectiveSector::Print ( const Option_t *  option) const

Print function to check the settings (e.g. the twist in the X direction) option=="a" prints the C0 and C1 coefficents for calibration purposes

Definition at line 174 of file AliTPCExBEffectiveSector.cxx.

virtual void AliTPCExBEffectiveSector::SetOmegaTauT1T2 ( Float_t  omegaTau,
Float_t  t1,
Float_t  t2 
)
inlinevirtual

Reimplemented from AliTPCCorrection.

Definition at line 25 of file AliTPCExBEffectiveSector.h.

Referenced by Init(), and Update().

void AliTPCExBEffectiveSector::Update ( const TTimeStamp &  timeStamp)
virtual

Update function

Reimplemented from AliTPCCorrection.

Definition at line 101 of file AliTPCExBEffectiveSector.cxx.

Member Data Documentation

Double_t AliTPCExBEffectiveSector::fC0

coefficient C0 (compare Jim Thomas's notes for definitions)

Definition at line 36 of file AliTPCExBEffectiveSector.h.

Referenced by GetC0(), GetCorrection(), Print(), and SetOmegaTauT1T2().

Double_t AliTPCExBEffectiveSector::fC1

coefficient C1 (compare Jim Thomas's notes for definitions)

Definition at line 37 of file AliTPCExBEffectiveSector.h.

Referenced by GetC1(), GetCorrection(), Print(), and SetOmegaTauT1T2().

TH3F* AliTPCExBEffectiveSector::fCorrectionR

radial correction

Definition at line 38 of file AliTPCExBEffectiveSector.h.

Referenced by GetCorrection(), UpdateEffSectorOCDB(), and ~AliTPCExBEffectiveSector().

TH3F* AliTPCExBEffectiveSector::fCorrectionRPhi

r-phi correction

Definition at line 39 of file AliTPCExBEffectiveSector.h.

Referenced by GetCorrection(), UpdateEffSectorOCDB(), and ~AliTPCExBEffectiveSector().

TH3F* AliTPCExBEffectiveSector::fCorrectionZ

z correction

Definition at line 40 of file AliTPCExBEffectiveSector.h.

Referenced by GetCorrection(), UpdateEffSectorOCDB(), and ~AliTPCExBEffectiveSector().


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