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1 | #ifndef ALIMAGFCM_H | |
2 | #define ALIMAGFCM_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | #include "AliMagFC.h" | |
9 | class TVector; | |
10 | ||
11 | class AliMagFCM : public AliMagFC | |
12 | { | |
13 | //Alice Magnetic Field with constant mesh | |
14 | ||
15 | public: | |
16 | AliMagFCM(); | |
17 | AliMagFCM(const char *name, const char *title, Int_t integ, | |
18 | Float_t factor, Float_t fmax); | |
19 | AliMagFCM(const AliMagFCM &mag); | |
20 | virtual ~AliMagFCM() {delete fB;} | |
21 | virtual void Field(Float_t *x, Float_t *b); | |
22 | virtual void ReadField(); | |
23 | virtual void SetSolenoidField(Float_t field = 2.) {fSolenoid = field;} | |
24 | virtual Float_t SolenoidField() const {return fSolenoid;} | |
25 | ||
26 | void Copy(TObject &magf) const; | |
27 | virtual AliMagFCM & operator=(const AliMagFCM &magf) | |
28 | {magf.Copy(*this); return *this;} | |
29 | ||
30 | Float_t Bx(Int_t ix, Int_t iy, Int_t iz) const { | |
31 | return (*fB)(3*(iz*(fXn*fYn)+iy*fXn+ix)); | |
32 | } | |
33 | Float_t By(Int_t ix, Int_t iy, Int_t iz) const { | |
34 | return (*fB)(3*(iz*(fXn*fYn)+iy*fXn+ix)+1); | |
35 | } | |
36 | Float_t Bz(Int_t ix, Int_t iy, Int_t iz) const { | |
37 | return (*fB)(3*(iz*(fXn*fYn)+iy*fXn+ix)+2); | |
38 | } | |
39 | ||
40 | protected: | |
41 | ||
42 | Float_t fXbeg; // Start of mesh in x | |
43 | Float_t fYbeg; // Start of mesh in y | |
44 | Float_t fZbeg; // Start of mesh in z | |
45 | Float_t fXdel; // Mesh step in x | |
46 | Float_t fYdel; // Mesh step in y | |
47 | Float_t fZdel; // Mesh step in z | |
48 | Float_t fSolenoid; // Solenoid Field Strength | |
49 | Double_t fXdeli; // Inverse of Mesh step in x | |
50 | Double_t fYdeli; // Inverse of Mesh step in y | |
51 | Double_t fZdeli; // Inverse of Mesh step in z | |
52 | Int_t fXn; // Number of mesh points in x | |
53 | Int_t fYn; // Number of mesh points in y | |
54 | Int_t fZn; // Number of mesh points in z | |
55 | TVector *fB; // Field map | |
56 | ||
57 | ClassDef(AliMagFCM,1) //Class for all Alice MagField with Constant Mesh | |
58 | }; | |
59 | ||
60 | #endif |