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b1f0a2a5 | 1 | #ifndef ALI_TPC_EX_BB_SHAPE_H |
2 | #define ALI_TPC_EX_BB_SHAPE_H | |
0116859c | 3 | |
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
7 | //////////////////////////////////////////////////////////////////////////// | |
8 | // // | |
9 | // AliExBBShape class // | |
10 | // The class calculates the space point distortions due to the B field // | |
11 | // shape imperfections using a second order technique based on integrals // | |
12 | // over Bz (e.g. int By/Bz) obtained via the AliMagF class // | |
13 | // The class allows "effective Omega Tau" corrections. // | |
14 | // // | |
15 | // date: 27/04/2010 // | |
16 | // Authors: Magnus Mager, Jim Thomas, Stefan Rossegger // | |
17 | //////////////////////////////////////////////////////////////////////////// | |
18 | ||
19 | #include "AliTPCCorrection.h" | |
20 | ||
21 | class AliMagF; | |
22 | ||
23 | class AliTPCExBBShape : public AliTPCCorrection { | |
24 | public: | |
25 | AliTPCExBBShape(); | |
26 | virtual ~AliTPCExBBShape(); | |
27 | ||
e527a1b9 | 28 | // initialization and update functions |
29 | virtual void Init(); | |
30 | virtual void Update(const TTimeStamp &timeStamp); | |
31 | ||
0116859c | 32 | // common setters and getters for ExB |
33 | virtual void SetOmegaTauT1T2(Float_t omegaTau,Float_t t1,Float_t t2) { | |
534fd34a | 34 | fT1=t1; fT2=t2; |
b1f0a2a5 | 35 | const Float_t wt1=t1*omegaTau; fC1=wt1/(1.+wt1*wt1); |
36 | const Float_t wt2=t2*omegaTau; fC2=wt2*wt2/(1.+wt2*wt2); | |
0116859c | 37 | }; |
38 | void SetC1C2(Float_t c1,Float_t c2) {fC1=c1;fC2=c2;} // CAUTION: USE WITH CARE | |
39 | Float_t GetC1() const {return fC1;} | |
40 | Float_t GetC2() const {return fC2;} | |
41 | ||
42 | // setters and getters for the magentic field map | |
b1f0a2a5 | 43 | void SetBField(const AliMagF *bField) {fBField=(AliMagF*)bField;} |
0116859c | 44 | AliMagF* GetBField() const {return fBField;} |
45 | ||
46 | virtual void GetCorrection(const Float_t x[],const Short_t roc,Float_t dx[]); | |
47 | void GetBxAndByOverBz(const Float_t x[],const Short_t roc,Float_t BxByOverBz[]); | |
48 | ||
49 | virtual void Print(Option_t* option="") const; | |
50 | ||
51 | private: | |
52 | Float_t fC1; // coefficient C1 (compare Jim Thomas's notes for definitions) | |
53 | Float_t fC2; // coefficient C2 (compare Jim Thomas's notes for definitions) | |
54 | ||
b1f0a2a5 | 55 | AliMagF *fBField; // pointer to magnetic field |
0116859c | 56 | |
57 | AliTPCExBBShape & operator =(const AliTPCExBBShape); | |
58 | AliTPCExBBShape(const AliTPCExBBShape&); //dummy copy contructor | |
59 | ||
534fd34a | 60 | ClassDef(AliTPCExBBShape,2); |
0116859c | 61 | }; |
62 | ||
63 | #endif |