8 #include "TVectorDfwd.h"
10 class AliTPCExB:public TObject {
13 AliTPCExB& operator=(const AliTPCExB &exb);
14 AliTPCExB(const AliTPCExB& exb);
15 virtual ~AliTPCExB() {};
16 virtual void Correct(const Double_t *position,Double_t *corrected)=0;
17 virtual void CorrectInverse(const Double_t *position,Double_t *corrected) {
18 Correct(position,corrected);
19 for (Int_t i=0;i<3;++i)
20 corrected[i]=position[i]-(corrected[i]-position[i]);
23 // Test and visualization
25 void TestExB(const char* fileName);
26 static Double_t GetDr(Double_t r, Double_t phi, Double_t z, Double_t bz=5);
27 static Double_t GetDrphi(Double_t r, Double_t phi, Double_t z, Double_t bz=5);
28 static Double_t GetDphi(Double_t r, Double_t phi, Double_t z, Double_t bz=5);
29 static Double_t GetDz(Double_t r, Double_t phi, Double_t z, Double_t bz=5);
30 static AliTPCExB* Instance(){return fgInstance;}
31 static void SetInstance(AliTPCExB *const param){fgInstance = param;}
35 static void RegisterField(Int_t index, AliMagF * magf);
36 static Double_t GetBx(Double_t r, Double_t phi, Double_t z,Int_t index=0);
37 static Double_t GetBy(Double_t r, Double_t phi, Double_t z,Int_t index=0);
38 static Double_t GetBz(Double_t r, Double_t phi, Double_t z,Int_t index=0);
39 static Double_t GetBr(Double_t r, Double_t phi, Double_t z,Int_t index=0);
40 static Double_t GetBrfi(Double_t r, Double_t phi, Double_t z,Int_t index=0);
42 static Double_t GetBxI(Double_t r, Double_t phi, Double_t z,Int_t index=0);
43 static Double_t GetByI(Double_t r, Double_t phi, Double_t z,Int_t index=0);
44 static Double_t GetBzI(Double_t r, Double_t phi, Double_t z,Int_t index=0);
45 static Double_t GetBrI(Double_t r, Double_t phi, Double_t z,Int_t index=0);
46 static Double_t GetBrfiI(Double_t r, Double_t phi, Double_t z,Int_t index=0);
49 Double_t Eval(Int_t type, Double_t r, Double_t phi, Double_t z);
50 Double_t SEval(Int_t type, Double_t r, Double_t phi, Double_t z){return Instance()->Eval(type,r,phi,z);}
51 static Double_t EvalMat(const TVectorD &vec, Double_t r, Double_t phi, Double_t z); // evalute parameterization
54 TVectorD * fMatBrBz; ///< param matrix Br/Bz
55 TVectorD * fMatBrfiBz; ///< param matrix Br/Bz
56 TVectorD * fMatBrBzI0; ///< param matrix Br/Bz integral z>0
57 TVectorD * fMatBrBzI1; ///< param matrix Br/Bz integral z<0
58 TVectorD * fMatBrfiBzI0; ///< param matrix Br/Bz integral z>0
59 TVectorD * fMatBrfiBzI1; ///< param matrix Br/Bz integral z<0
61 static AliTPCExB* fgInstance; //!< Instance of this class (singleton implementation)
62 static TObjArray fgArray; //!< array of magnetic fields