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0eea9d4d | 1 | |
2 | // Author: ruben.shahoyan@cern.ch 20/03/2007 | |
d28e407c | 3 | |
0eea9d4d | 4 | /////////////////////////////////////////////////////////////////////////////////// |
5 | // // | |
6 | // Wrapper for the set of mag.field parameterizations by Chebyshev polinomials // | |
7 | // To obtain the field in cartesian coordinates/components use // | |
8 | // Field(float* xyz, float* bxyz); // | |
9 | // For cylindrical coordinates/components: // | |
10 | // FieldCyl(float* rphiz, float* brphiz) // | |
11 | // // | |
d28e407c | 12 | // The solenoid part is parameterized in the volume R<500, -550<Z<550 cm // |
0eea9d4d | 13 | // // |
14 | // The region R<423 cm, -343.3<Z<481.3 for 30kA and -343.3<Z<481.3 for 12kA // | |
15 | // is parameterized using measured data while outside the Tosca calculation // | |
16 | // is used (matched to data on the boundary of the measurements) // | |
17 | // // | |
18 | // If the querried point is outside the validity region no the return values // | |
19 | // for the field components are set to 0. // | |
20 | // // | |
d28e407c | 21 | // To obtain the field integral in the TPC region from given point to nearest // |
22 | // cathod plane (+- 250 cm) use: // | |
23 | // GetTPCInt(float* xyz, float* bxyz); for Cartesian frame // | |
24 | // or // | |
25 | // GetTPCIntCyl(Float_t *rphiz, Float_t *b); for Cylindrical frame // | |
26 | // // | |
27 | // // | |
28 | // The units are kiloGauss and cm. // | |
29 | // // | |
0eea9d4d | 30 | /////////////////////////////////////////////////////////////////////////////////// |
d28e407c | 31 | #ifndef _ALIMAGFCHEB_ |
32 | #define _ALIMAGFCHEB_ | |
0eea9d4d | 33 | |
0eea9d4d | 34 | #include <TNamed.h> |
d28e407c | 35 | #include <TSystem.h> |
0eea9d4d | 36 | #include "AliCheb3D.h" |
37 | ||
38 | class AliMagFCheb: public TNamed | |
39 | { | |
40 | public: | |
d28e407c | 41 | AliMagFCheb(); |
42 | AliMagFCheb(const AliMagFCheb& src); | |
43 | ~AliMagFCheb() {Clear();} | |
0eea9d4d | 44 | // |
d28e407c | 45 | void CopyFrom(const AliMagFCheb& src); |
46 | AliMagFCheb& operator=(const AliMagFCheb& rhs); | |
47 | virtual void Clear(Option_t * = ""); | |
0eea9d4d | 48 | // |
49 | Int_t GetNParamsSol() const {return fNParamsSol;} | |
50 | Int_t GetNSegZSol() const {return fNSegZSol;} | |
d28e407c | 51 | // |
52 | Int_t GetNParamsTPCInt() const {return fNParamsTPCInt;} | |
53 | Int_t GetNSegZTPCInt() const {return fNSegZTPCInt;} | |
54 | // | |
55 | Int_t GetNParamsDip() const {return fNParamsDip;} | |
56 | Int_t GetNSegZDip() const {return fNZSegDip;} | |
57 | // | |
0eea9d4d | 58 | // |
59 | Float_t GetMinZSol() const {return fMinZSol;} | |
60 | Float_t GetMaxZSol() const {return fMaxZSol;} | |
61 | Float_t GetMaxRSol() const {return fMaxRSol;} | |
d28e407c | 62 | // |
63 | Float_t GetMinZDip() const {return fMinZDip;} | |
64 | Float_t GetMaxZDip() const {return fMaxZDip;} | |
65 | // | |
66 | Float_t GetMinZTPCInt() const {return fMinZTPCInt;} | |
67 | Float_t GetMaxZTPCInt() const {return fMaxZTPCInt;} | |
68 | Float_t GetMaxRTPCInt() const {return fMaxRTPCInt;} | |
69 | // | |
70 | Int_t FindDipSegment(float *xyz) const; | |
0eea9d4d | 71 | AliCheb3D* GetParamSol(Int_t ipar) const {return (AliCheb3D*)fParamsSol->UncheckedAt(ipar);} |
d28e407c | 72 | AliCheb3D* GetParamTPCInt(Int_t ipar) const {return (AliCheb3D*)fParamsTPCInt->UncheckedAt(ipar);} |
0eea9d4d | 73 | AliCheb3D* GetParamDip(Int_t ipar) const {return (AliCheb3D*)fParamsDip->UncheckedAt(ipar);} |
74 | // | |
0eea9d4d | 75 | virtual void Print(Option_t * = "") const; |
76 | // | |
77 | virtual void Field(Float_t *xyz, Float_t *b) const; | |
78 | virtual void FieldCyl(Float_t *rphiz, Float_t *b) const; | |
ae5ea910 | 79 | // |
d28e407c | 80 | virtual void GetTPCInt(Float_t *xyz, Float_t *b) const; |
81 | virtual void GetTPCIntCyl(Float_t *rphiz, Float_t *b) const; | |
0eea9d4d | 82 | // |
d28e407c | 83 | static void CylToCartCylB(float *rphiz, float *brphiz,float *bxyz); |
84 | static void CylToCartCartB(float *xyz, float *brphiz,float *bxyz); | |
85 | static void CartToCylCartB(float *xyz, float *bxyz, float *brphiz); | |
86 | static void CartToCylCylB(float *rphiz, float *bxyz, float *brphiz); | |
87 | static void CartToCyl(float *xyz, float *rphiz); | |
88 | static void CylToCart(float *rphiz,float *xyz); | |
0eea9d4d | 89 | // |
90 | #ifdef _INC_CREATION_ALICHEB3D_ // see AliCheb3D.h for explanation | |
1cf34ee8 | 91 | void LoadData(const char* inpfile); |
92 | // | |
d28e407c | 93 | AliMagFCheb(const char* inputFile); |
94 | void SaveData(const char* outfile) const; | |
95 | Int_t SegmentDipDimension(float** seg,const TObjArray* par,int npar, int dim, | |
96 | float xmn,float xmx,float ymn,float ymx,float zmn,float zmx); | |
97 | // | |
98 | void AddParamSol(AliCheb3D* param); | |
99 | void AddParamTPCInt(AliCheb3D* param); | |
100 | void AddParamDip(AliCheb3D* param); | |
101 | void BuildTableDip(); | |
102 | void BuildTableSol(); | |
103 | void BuildTableTPCInt(); | |
104 | void ResetTPCInt(); | |
105 | ||
0eea9d4d | 106 | #endif |
107 | // | |
108 | protected: | |
0eea9d4d | 109 | virtual void FieldCylSol(Float_t *rphiz, Float_t *b) const; |
110 | // | |
111 | protected: | |
112 | // | |
113 | Int_t fNParamsSol; // Total number of parameterization pieces for Sol | |
d28e407c | 114 | Int_t fNSegZSol; // Number of segments in Z for Solenoid field |
115 | // | |
116 | Int_t fNParamsTPCInt; // Total number of parameterization pieces for TPC field integral | |
117 | Int_t fNSegZTPCInt; // Number of segments in Z for TPC field integral | |
0eea9d4d | 118 | // |
119 | Int_t fNParamsDip; // Total number of parameterization pieces for dipole | |
d28e407c | 120 | Int_t fNZSegDip; // number of distinct Z segments in Dipole |
121 | Int_t fNYSegDip; // number of distinct Y segments in Dipole | |
122 | Int_t fNXSegDip; // number of distinct X segments in Dipole | |
123 | // | |
124 | Float_t* fSegZSol; //[fNSegZSol] upper boundaries of Z segments | |
125 | Float_t* fSegRSol; //[fNParamsSol] upper boundaries of R segments | |
126 | // | |
127 | Float_t* fSegZTPCInt; //[fNSegZTPCInt] upper boundaries of Z segments | |
128 | Float_t* fSegRTPCInt; //[fNParamsTPCInt] upper boundaries of R segments | |
0eea9d4d | 129 | // |
d28e407c | 130 | Float_t* fSegZDip; //[fNZSegDip] coordinates of distinct Z segments in Dipole |
131 | Float_t* fSegYDip; //[fNYSegDip] coordinated of Y segments for each Zsegment in Dipole | |
132 | Float_t* fSegXDip; //[fNXSegDip] coordinated of X segments for each Ysegment in Dipole | |
0eea9d4d | 133 | // |
d28e407c | 134 | Int_t* fNSegRSol; //[fNSegZSol] number of R segments for each Z segment |
135 | Int_t* fSegZIdSol; //[fNSegZSol] Id of the first R segment of each Z segment in the fSegRSol... | |
136 | // | |
137 | Int_t* fNSegRTPCInt; //[fNSegZTPCInt] number of R segments for each Z segment | |
138 | Int_t* fSegZIdTPCInt; //[fNSegZTPCInt] Id of the first R segment of each Z segment in the fSegRTPCInt... | |
139 | // | |
140 | Int_t* fBegSegYDip; //[fNZSegDip] beginning of Y segments array for each Z segment | |
141 | Int_t* fNSegYDip; //[fNZSegDip] number of Y segments for each Z segment | |
142 | Int_t* fBegSegXDip; //[fNYSegDip] beginning of X segments array for each Y segment | |
143 | Int_t* fNSegXDip; //[fNYSegDip] number of X segments for each Y segment | |
144 | Int_t* fSegIDDip; //[fNXSegDip] ID of the dipole parameterization for given XYZ segment | |
0eea9d4d | 145 | // |
146 | Float_t fMinZSol; // Min Z of Sol parameterization (in CYL. coordinates) | |
147 | Float_t fMaxZSol; // Max Z of Sol parameterization (in CYL. coordinates) | |
148 | Float_t fMaxRSol; // Max R of Sol parameterization (in CYL. coordinates) | |
149 | // | |
d28e407c | 150 | Float_t fMinZDip; // Min Z of Dipole parameterization |
151 | Float_t fMaxZDip; // Max Z of Dipole parameterization | |
152 | // | |
153 | Float_t fMinZTPCInt; // Min Z of TPCInt parameterization (in CYL. coordinates) | |
154 | Float_t fMaxZTPCInt; // Max Z of TPCInt parameterization (in CYL. coordinates) | |
155 | Float_t fMaxRTPCInt; // Max R of TPCInt parameterization (in CYL. coordinates) | |
156 | // | |
0eea9d4d | 157 | TObjArray* fParamsSol; // Parameterization pieces for Solenoid field |
158 | TObjArray* fParamsDip; // Parameterization pieces for Dipole field | |
d28e407c | 159 | TObjArray* fParamsTPCInt; // Parameterization pieces for Solenoid field integrals in TPC region |
0eea9d4d | 160 | // |
d28e407c | 161 | ClassDef(AliMagFCheb,3) // Wrapper class for the set of Chebishev parameterizations of Alice mag.field |
0eea9d4d | 162 | // |
163 | }; | |
164 | ||
165 | ||
166 | //__________________________________________________________________________________________ | |
167 | inline void AliMagFCheb::FieldCyl(Float_t *rphiz, Float_t *b) const | |
168 | { | |
169 | // compute field in Cylindircal coordinates | |
d28e407c | 170 | // if (rphiz[2]<GetMinZSol() || rphiz[2]>GetMaxZSol() || rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;} |
0eea9d4d | 171 | FieldCylSol(rphiz,b); |
172 | } | |
173 | ||
d28e407c | 174 | //__________________________________________________________________________________________________ |
175 | inline void AliMagFCheb::CylToCartCylB(float *rphiz, float *brphiz,float *bxyz) | |
176 | { | |
177 | // convert field in cylindrical coordinates to cartesian system, point is in cyl.system | |
178 | float btr = TMath::Sqrt(brphiz[0]*brphiz[0]+brphiz[1]*brphiz[1]); | |
179 | float psiPLUSphi = TMath::ATan2(brphiz[1],brphiz[0]) + rphiz[1]; | |
180 | bxyz[0] = btr*TMath::Cos(psiPLUSphi); | |
181 | bxyz[1] = btr*TMath::Sin(psiPLUSphi); | |
182 | bxyz[2] = brphiz[2]; | |
183 | // | |
184 | } | |
185 | ||
186 | //__________________________________________________________________________________________________ | |
187 | inline void AliMagFCheb::CylToCartCartB(float *xyz, float *brphiz,float *bxyz) | |
188 | { | |
189 | // convert field in cylindrical coordinates to cartesian system, point is in cart.system | |
190 | float btr = TMath::Sqrt(brphiz[0]*brphiz[0]+brphiz[1]*brphiz[1]); | |
191 | float phiPLUSpsi = TMath::ATan2(xyz[1],xyz[0]) + TMath::ATan2(brphiz[1],brphiz[0]); | |
192 | bxyz[0] = btr*TMath::Cos(phiPLUSpsi); | |
193 | bxyz[1] = btr*TMath::Sin(phiPLUSpsi); | |
194 | bxyz[2] = brphiz[2]; | |
195 | // | |
196 | } | |
197 | ||
198 | //__________________________________________________________________________________________________ | |
199 | inline void AliMagFCheb::CartToCylCartB(float *xyz ,float *bxyz, float *brphiz) | |
200 | { | |
201 | // convert field in cylindrical coordinates to cartesian system, poin is in cart.system | |
202 | float btr = TMath::Sqrt(bxyz[0]*bxyz[0]+bxyz[1]*bxyz[1]); | |
203 | float psiMINphi = TMath::ATan2(bxyz[1],bxyz[0]) - TMath::ATan2(xyz[1],xyz[0]); | |
204 | // | |
205 | brphiz[0] = btr*TMath::Cos(psiMINphi); | |
206 | brphiz[1] = btr*TMath::Sin(psiMINphi); | |
207 | brphiz[2] = bxyz[2]; | |
208 | // | |
209 | } | |
210 | ||
211 | //__________________________________________________________________________________________________ | |
212 | inline void AliMagFCheb::CartToCylCylB(float *rphiz,float *bxyz, float *brphiz) | |
213 | { | |
214 | // convert field in cylindrical coordinates to cartesian system, point is in cyl.system | |
215 | float btr = TMath::Sqrt(bxyz[0]*bxyz[0]+bxyz[1]*bxyz[1]); | |
216 | float psiMINphi = TMath::ATan2(bxyz[1],bxyz[0]) - rphiz[1]; | |
217 | brphiz[0] = btr*TMath::Cos(psiMINphi); | |
218 | brphiz[1] = btr*TMath::Sin(psiMINphi); | |
219 | brphiz[2] = bxyz[2]; | |
220 | // | |
221 | } | |
222 | ||
223 | //__________________________________________________________________________________________________ | |
224 | inline void AliMagFCheb::CartToCyl(float *xyz,float *rphiz) | |
225 | { | |
226 | rphiz[0] = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]); | |
227 | rphiz[1] = TMath::ATan2(xyz[1],xyz[0]); | |
228 | rphiz[2] = xyz[2]; | |
229 | } | |
230 | ||
231 | //__________________________________________________________________________________________________ | |
232 | inline void AliMagFCheb::CylToCart(float *rphiz,float *xyz) | |
233 | { | |
234 | xyz[0] = rphiz[0]*TMath::Cos(rphiz[1]); | |
235 | xyz[1] = rphiz[0]*TMath::Sin(rphiz[1]); | |
236 | xyz[2] = rphiz[2]; | |
237 | } | |
238 | ||
0eea9d4d | 239 | #endif |