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0eea9d4d | 1 | #ifndef ALIMAGFCHEB_H |
2 | #define ALIMAGFCHEB_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 | ||
9 | // Author: ruben.shahoyan@cern.ch 20/03/2007 | |
10 | // | |
11 | /////////////////////////////////////////////////////////////////////////////////// | |
12 | // // | |
13 | // Wrapper for the set of mag.field parameterizations by Chebyshev polinomials // | |
14 | // To obtain the field in cartesian coordinates/components use // | |
15 | // Field(float* xyz, float* bxyz); // | |
16 | // For cylindrical coordinates/components: // | |
17 | // FieldCyl(float* rphiz, float* brphiz) // | |
18 | // // | |
19 | // For the moment only the solenoid part is parameterized in the volume defined // | |
20 | // by R<500, -550<Z<550 cm // | |
21 | // // | |
22 | // The region R<423 cm, -343.3<Z<481.3 for 30kA and -343.3<Z<481.3 for 12kA // | |
23 | // is parameterized using measured data while outside the Tosca calculation // | |
24 | // is used (matched to data on the boundary of the measurements) // | |
25 | // // | |
26 | // If the querried point is outside the validity region no the return values // | |
27 | // for the field components are set to 0. // | |
28 | // // | |
29 | /////////////////////////////////////////////////////////////////////////////////// | |
30 | ||
31 | ||
32 | #include <TSystem.h> | |
33 | #include <TNamed.h> | |
34 | #include "AliCheb3D.h" | |
99adacae | 35 | #include "AliCheb3DCalc.h" |
0eea9d4d | 36 | |
37 | class AliMagFCheb: public TNamed | |
38 | { | |
39 | public: | |
0bc7b414 | 40 | AliMagFCheb(); |
41 | AliMagFCheb(const char* inputFile); | |
c437b1a5 | 42 | AliMagFCheb(const AliMagFCheb &src); |
43 | AliMagFCheb& operator= (const AliMagFCheb &rhs); | |
44 | ||
0bc7b414 | 45 | ~AliMagFCheb(); |
0eea9d4d | 46 | // |
47 | void AddParamSol(AliCheb3D* param); | |
48 | void AddParamDip(AliCheb3D* param); | |
49 | void BuildTableSol(); | |
50 | // | |
51 | Int_t GetNParamsSol() const {return fNParamsSol;} | |
52 | Int_t GetNSegZSol() const {return fNSegZSol;} | |
53 | Int_t GetNSegRSol(int iz) const {return iz<fNParamsSol ? fNSegRSol[iz]:0;} | |
54 | Int_t GetSegIDSol(int iz,int ir) const {return iz<fNParamsSol&&ir<fNSegRSol[iz] ? fSegZIdSol[iz]+ir:-1;} | |
55 | // | |
56 | Float_t GetMinZSol() const {return fMinZSol;} | |
57 | Float_t GetMaxZSol() const {return fMaxZSol;} | |
58 | Float_t GetMaxRSol() const {return fMaxRSol;} | |
59 | AliCheb3D* GetParamSol(Int_t ipar) const {return (AliCheb3D*)fParamsSol->UncheckedAt(ipar);} | |
60 | AliCheb3D* GetParamDip(Int_t ipar) const {return (AliCheb3D*)fParamsDip->UncheckedAt(ipar);} | |
61 | // | |
62 | void LoadData(const char* inpfile); | |
63 | // | |
64 | virtual void Print(Option_t * = "") const; | |
65 | // | |
66 | virtual void Field(Float_t *xyz, Float_t *b) const; | |
67 | virtual void FieldCyl(Float_t *rphiz, Float_t *b) const; | |
68 | // | |
69 | // | |
70 | #ifdef _INC_CREATION_ALICHEB3D_ // see AliCheb3D.h for explanation | |
71 | void SaveData(const char* outfile) const; | |
72 | #endif | |
73 | // | |
74 | protected: | |
75 | void Init0(); | |
76 | virtual void FieldCylSol(Float_t *rphiz, Float_t *b) const; | |
77 | // | |
78 | protected: | |
79 | // | |
80 | Int_t fNParamsSol; // Total number of parameterization pieces for Sol | |
81 | Int_t fNSegZSol; // Number of segments is Z | |
82 | // | |
83 | Int_t fNParamsDip; // Total number of parameterization pieces for dipole | |
84 | // | |
85 | Float_t* fSegZSol; //[fNSegZSol] upper boundaries of Z segments | |
86 | Float_t* fSegRSol; //[fNParamsSol] upper boundaries of R segments | |
87 | // | |
88 | Int_t* fNSegRSol; //[fNSegZSol] number of R segments for each Z segment | |
89 | Int_t* fSegZIdSol; //[fNSegZSol] Id of the first R segment of each Z segment in the fSegRSol... | |
90 | // | |
91 | Float_t fMinZSol; // Min Z of Sol parameterization (in CYL. coordinates) | |
92 | Float_t fMaxZSol; // Max Z of Sol parameterization (in CYL. coordinates) | |
93 | Float_t fMaxRSol; // Max R of Sol parameterization (in CYL. coordinates) | |
94 | // | |
95 | TObjArray* fParamsSol; // Parameterization pieces for Solenoid field | |
96 | TObjArray* fParamsDip; // Parameterization pieces for Dipole field | |
97 | // | |
98 | ClassDef(AliMagFCheb,1) // Wrapper class for the set of Chebishev parameterizations of Alice mag.field | |
99 | // | |
100 | }; | |
101 | ||
102 | ||
103 | //__________________________________________________________________________________________ | |
104 | inline void AliMagFCheb::FieldCyl(Float_t *rphiz, Float_t *b) const | |
105 | { | |
106 | // compute field in Cylindircal coordinates | |
107 | if (rphiz[2]<GetMinZSol() || rphiz[2]>GetMaxZSol() || rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;} | |
108 | FieldCylSol(rphiz,b); | |
109 | } | |
110 | ||
111 | #endif |