#ifndef ALI_TPC_EX_BB_SHAPE_H #define ALI_TPC_EX_BB_SHAPE_H /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ // _________________________________________________________________ // // Begin_Html //
// The class allows "effective Omega Tau" corrections. // End_Html // Begin_Macro(source) // { // gROOT->SetStyle("Plain"); gStyle->SetPalette(1); // TCanvas *c2 = new TCanvas("cAliTPCExBBShape","cAliTPCExBBShape",500,300); // AliTPCExBBShape exb; // AliMagF mag("mag","mag"); // 0.5 Tesla (solenoid) // exb.SetBField(&mag); // use Bfield from AliMagF // exb.SetOmegaTauT1T2(-0.32,1.,1.); // values ideally from OCDB // exb.CreateHistoDRPhiinZR(0,100,100)->Draw("surf2"); // return c2; // } // End_Macro // Begin_Html //
// Date: 27/04/2010
// Authors: Magnus Mager, Jim Thomas, Stefan Rossegger
// End_Html
// _________________________________________________________________
#include "AliTPCCorrection.h"
class AliMagF;
class AliTPCExBBShape : public AliTPCCorrection {
public:
AliTPCExBBShape();
virtual ~AliTPCExBBShape();
// initialization and update functions
virtual void Init();
virtual void Update(const TTimeStamp &timeStamp);
// common setters and getters for ExB
virtual void SetOmegaTauT1T2(Float_t omegaTau,Float_t t1,Float_t t2) {
fT1=t1; fT2=t2;
const Float_t wt1=t1*omegaTau; fC1=wt1/(1.+wt1*wt1);
const Float_t wt2=t2*omegaTau; fC2=wt2*wt2/(1.+wt2*wt2);
};
void SetC1C2(Float_t c1,Float_t c2) {fC1=c1;fC2=c2;} // CAUTION: USE WITH CARE
Float_t GetC1() const {return fC1;}
Float_t GetC2() const {return fC2;}
// setters and getters for the magentic field map
void SetBField(const AliMagF *bField) {fBField=(AliMagF*)bField;}
AliMagF* GetBField() const {return fBField;}
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;
static Double_t GetBFieldXYZ(Double_t gx, Double_t gy, Double_t gz, Int_t axisType);
private:
Float_t fC1; // coefficient C1 (compare Jim Thomas's notes for definitions)
Float_t fC2; // coefficient C2 (compare Jim Thomas's notes for definitions)
AliMagF *fBField; // pointer to magnetic field
AliTPCExBBShape & operator =(const AliTPCExBBShape &); // dummy assignment operator
AliTPCExBBShape(const AliTPCExBBShape&); //dummy copy contructor
ClassDef(AliTPCExBBShape,2);
};
#endif