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1 | ||
2 | // Author: ruben.shahoyan@cern.ch 20/03/2007 | |
3 | ||
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(double* xyz, double* bxyz); // | |
9 | // For cylindrical coordinates/components: // | |
10 | // FieldCyl(double* rphiz, double* brphiz) // | |
11 | // // | |
12 | // The solenoid part is parameterized in the volume R<500, -550<Z<550 cm // | |
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 | // Two options are possible: // | |
19 | // 1) _BRING_TO_BOUNDARY_ is defined in the AliCheb3D: // | |
20 | // If the querried point is outside of the validity region then the field // | |
21 | // at the closest point on the fitted surface is returned. // | |
22 | // 2) _BRING_TO_BOUNDARY_ is not defined in the AliCheb3D: // | |
23 | // If the querried point is outside of the validity region the return // | |
24 | // value for the field components are set to 0. // | |
25 | // // | |
26 | // To obtain the field integral in the TPC region from given point to nearest // | |
27 | // cathod plane (+- 250 cm) use: // | |
28 | // GetTPCInt(double* xyz, double* bxyz); for Cartesian frame // | |
29 | // or // | |
30 | // GetTPCIntCyl(Double_t *rphiz, Double_t *b); for Cylindrical frame // | |
31 | // // | |
32 | // // | |
33 | // The units are kiloGauss and cm. // | |
34 | // // | |
35 | /////////////////////////////////////////////////////////////////////////////////// | |
36 | ||
37 | #ifndef ALIMAGWRAPCHEB_H | |
38 | #define ALIMAGWRAPCHEB_H | |
39 | ||
40 | #include <TMath.h> | |
41 | #include <TNamed.h> | |
42 | #include "AliCheb3D.h" | |
43 | ||
44 | class TSystem; | |
45 | class TArrayF; | |
46 | class TArrayI; | |
47 | ||
48 | class AliMagWrapCheb: public TNamed | |
49 | { | |
50 | public: | |
51 | AliMagWrapCheb(); | |
52 | AliMagWrapCheb(const AliMagWrapCheb& src); | |
53 | ~AliMagWrapCheb() {Clear();} | |
54 | // | |
55 | void CopyFrom(const AliMagWrapCheb& src); | |
56 | AliMagWrapCheb& operator=(const AliMagWrapCheb& rhs); | |
57 | virtual void Clear(const Option_t * = ""); | |
58 | // | |
59 | Int_t GetNParamsSol() const {return fNParamsSol;} | |
60 | Int_t GetNSegZSol() const {return fNZSegSol;} | |
61 | Float_t* GetSegZSol() const {return fSegZSol;} | |
62 | // | |
63 | Int_t GetNParamsTPCInt() const {return fNParamsTPC;} | |
64 | Int_t GetNSegZTPCInt() const {return fNZSegTPC;} | |
65 | // | |
66 | Int_t GetNParamsTPCRatInt() const {return fNParamsTPCRat;} | |
67 | Int_t GetNSegZTPCRatInt() const {return fNZSegTPCRat;} | |
68 | // | |
69 | Int_t GetNParamsDip() const {return fNParamsDip;} | |
70 | Int_t GetNSegZDip() const {return fNZSegDip;} | |
71 | // | |
72 | Float_t GetMaxZ() const {return GetMaxZSol();} | |
73 | Float_t GetMinZ() const {return fParamsDip ? GetMinZDip() : GetMinZSol();} | |
74 | // | |
75 | Float_t GetMinZSol() const {return fMinZSol;} | |
76 | Float_t GetMaxZSol() const {return fMaxZSol;} | |
77 | Float_t GetMaxRSol() const {return fMaxRSol;} | |
78 | // | |
79 | Float_t GetMinZDip() const {return fMinZDip;} | |
80 | Float_t GetMaxZDip() const {return fMaxZDip;} | |
81 | // | |
82 | Float_t GetMinZTPCInt() const {return fMinZTPC;} | |
83 | Float_t GetMaxZTPCInt() const {return fMaxZTPC;} | |
84 | Float_t GetMaxRTPCInt() const {return fMaxRTPC;} | |
85 | // | |
86 | Float_t GetMinZTPCRatInt() const {return fMinZTPCRat;} | |
87 | Float_t GetMaxZTPCRatInt() const {return fMaxZTPCRat;} | |
88 | Float_t GetMaxRTPCRatInt() const {return fMaxRTPCRat;} | |
89 | // | |
90 | AliCheb3D* GetParamSol(Int_t ipar) const {return (AliCheb3D*)fParamsSol->UncheckedAt(ipar);} | |
91 | AliCheb3D* GetParamTPCRatInt(Int_t ipar) const {return (AliCheb3D*)fParamsTPCRat->UncheckedAt(ipar);} | |
92 | AliCheb3D* GetParamTPCInt(Int_t ipar) const {return (AliCheb3D*)fParamsTPC->UncheckedAt(ipar);} | |
93 | AliCheb3D* GetParamDip(Int_t ipar) const {return (AliCheb3D*)fParamsDip->UncheckedAt(ipar);} | |
94 | // | |
95 | virtual void Print(Option_t * = "") const; | |
96 | // | |
97 | virtual void Field(const Double_t *xyz, Double_t *b) const; | |
98 | Double_t GetBz(const Double_t *xyz) const; | |
99 | // | |
100 | void FieldCyl(const Double_t *rphiz, Double_t *b) const; | |
101 | void GetTPCInt(const Double_t *xyz, Double_t *b) const; | |
102 | void GetTPCIntCyl(const Double_t *rphiz, Double_t *b) const; | |
103 | void GetTPCRatInt(const Double_t *xyz, Double_t *b) const; | |
104 | void GetTPCRatIntCyl(const Double_t *rphiz, Double_t *b) const; | |
105 | // | |
106 | Int_t FindSolSegment(const Double_t *xyz) const; | |
107 | Int_t FindTPCSegment(const Double_t *xyz) const; | |
108 | Int_t FindTPCRatSegment(const Double_t *xyz) const; | |
109 | Int_t FindDipSegment(const Double_t *xyz) const; | |
110 | static void CylToCartCylB(const Double_t *rphiz, const Double_t *brphiz,Double_t *bxyz); | |
111 | static void CylToCartCartB(const Double_t *xyz, const Double_t *brphiz,Double_t *bxyz); | |
112 | static void CartToCylCartB(const Double_t *xyz, const Double_t *bxyz, Double_t *brphiz); | |
113 | static void CartToCylCylB(const Double_t *rphiz, const Double_t *bxyz, Double_t *brphiz); | |
114 | static void CartToCyl(const Double_t *xyz, Double_t *rphiz); | |
115 | static void CylToCart(const Double_t *rphiz,Double_t *xyz); | |
116 | // | |
117 | #ifdef _INC_CREATION_ALICHEB3D_ // see AliCheb3D.h for explanation | |
118 | void LoadData(const char* inpfile); | |
119 | // | |
120 | AliMagWrapCheb(const char* inputFile); | |
121 | void SaveData(const char* outfile) const; | |
122 | Int_t SegmentDimension(Float_t** seg,const TObjArray* par,int npar, int dim, | |
123 | Float_t xmn,Float_t xmx,Float_t ymn,Float_t ymx,Float_t zmn,Float_t zmx); | |
124 | // | |
125 | void AddParamSol(const AliCheb3D* param); | |
126 | void AddParamTPCInt(const AliCheb3D* param); | |
127 | void AddParamTPCRatInt(const AliCheb3D* param); | |
128 | void AddParamDip(const AliCheb3D* param); | |
129 | void BuildTable(Int_t npar,TObjArray *parArr, Int_t &nZSeg, Int_t &nYSeg, Int_t &nXSeg, | |
130 | Float_t &minZ,Float_t &maxZ,Float_t **segZ,Float_t **segY,Float_t **segX, | |
131 | Int_t **begSegY,Int_t **nSegY,Int_t **begSegX,Int_t **nSegX,Int_t **segID); | |
132 | void BuildTableSol(); | |
133 | void BuildTableDip(); | |
134 | void BuildTableTPCInt(); | |
135 | void BuildTableTPCRatInt(); | |
136 | void ResetTPCInt(); | |
137 | void ResetTPCRatInt(); | |
138 | // | |
139 | // | |
140 | #endif | |
141 | // | |
142 | protected: | |
143 | void FieldCylSol(const Double_t *rphiz, Double_t *b) const; | |
144 | Double_t FieldCylSolBz(const Double_t *rphiz) const; | |
145 | // | |
146 | protected: | |
147 | // | |
148 | Int_t fNParamsSol; // Total number of parameterization pieces for solenoid | |
149 | Int_t fNZSegSol; // number of distinct Z segments in Solenoid | |
150 | Int_t fNPSegSol; // number of distinct P segments in Solenoid | |
151 | Int_t fNRSegSol; // number of distinct R segments in Solenoid | |
152 | Float_t* fSegZSol; //[fNZSegSol] coordinates of distinct Z segments in Solenoid | |
153 | Float_t* fSegPSol; //[fNPSegSol] coordinated of P segments for each Zsegment in Solenoid | |
154 | Float_t* fSegRSol; //[fNRSegSol] coordinated of R segments for each Psegment in Solenoid | |
155 | Int_t* fBegSegPSol; //[fNPSegSol] beginning of P segments array for each Z segment | |
156 | Int_t* fNSegPSol; //[fNZSegSol] number of P segments for each Z segment | |
157 | Int_t* fBegSegRSol; //[fNPSegSol] beginning of R segments array for each P segment | |
158 | Int_t* fNSegRSol; //[fNPSegSol] number of R segments for each P segment | |
159 | Int_t* fSegIDSol; //[fNRSegSol] ID of the solenoid parameterization for given RPZ segment | |
160 | Float_t fMinZSol; // Min Z of Solenoid parameterization | |
161 | Float_t fMaxZSol; // Max Z of Solenoid parameterization | |
162 | TObjArray* fParamsSol; // Parameterization pieces for Solenoid field | |
163 | Float_t fMaxRSol; // max raduis for Solenoid field | |
164 | // | |
165 | Int_t fNParamsTPC; // Total number of parameterization pieces for TPCint | |
166 | Int_t fNZSegTPC; // number of distinct Z segments in TPCint | |
167 | Int_t fNPSegTPC; // number of distinct P segments in TPCint | |
168 | Int_t fNRSegTPC; // number of distinct R segments in TPCint | |
169 | Float_t* fSegZTPC; //[fNZSegTPC] coordinates of distinct Z segments in TPCint | |
170 | Float_t* fSegPTPC; //[fNPSegTPC] coordinated of P segments for each Zsegment in TPCint | |
171 | Float_t* fSegRTPC; //[fNRSegTPC] coordinated of R segments for each Psegment in TPCint | |
172 | Int_t* fBegSegPTPC; //[fNPSegTPC] beginning of P segments array for each Z segment | |
173 | Int_t* fNSegPTPC; //[fNZSegTPC] number of P segments for each Z segment | |
174 | Int_t* fBegSegRTPC; //[fNPSegTPC] beginning of R segments array for each P segment | |
175 | Int_t* fNSegRTPC; //[fNPSegTPC] number of R segments for each P segment | |
176 | Int_t* fSegIDTPC; //[fNRSegTPC] ID of the TPCint parameterization for given RPZ segment | |
177 | Float_t fMinZTPC; // Min Z of TPCint parameterization | |
178 | Float_t fMaxZTPC; // Max Z of TPCint parameterization | |
179 | TObjArray* fParamsTPC; // Parameterization pieces for TPCint field | |
180 | Float_t fMaxRTPC; // max raduis for Solenoid field integral in TPC | |
181 | // | |
182 | Int_t fNParamsTPCRat; // Total number of parameterization pieces for tr.field to Bz integrals in TPC region | |
183 | Int_t fNZSegTPCRat; // number of distinct Z segments in TpcRatInt | |
184 | Int_t fNPSegTPCRat; // number of distinct P segments in TpcRatInt | |
185 | Int_t fNRSegTPCRat; // number of distinct R segments in TpcRatInt | |
186 | Float_t* fSegZTPCRat; //[fNZSegTPCRat] coordinates of distinct Z segments in TpcRatInt | |
187 | Float_t* fSegPTPCRat; //[fNPSegTPCRat] coordinated of P segments for each Zsegment in TpcRatInt | |
188 | Float_t* fSegRTPCRat; //[fNRSegTPCRat] coordinated of R segments for each Psegment in TpcRatInt | |
189 | Int_t* fBegSegPTPCRat; //[fNPSegTPCRat] beginning of P segments array for each Z segment | |
190 | Int_t* fNSegPTPCRat; //[fNZSegTPCRat] number of P segments for each Z segment | |
191 | Int_t* fBegSegRTPCRat; //[fNPSegTPCRat] beginning of R segments array for each P segment | |
192 | Int_t* fNSegRTPCRat; //[fNPSegTPCRat] number of R segments for each P segment | |
193 | Int_t* fSegIDTPCRat; //[fNRSegTPCRat] ID of the TpcRatInt parameterization for given RPZ segment | |
194 | Float_t fMinZTPCRat; // Min Z of TpcRatInt parameterization | |
195 | Float_t fMaxZTPCRat; // Max Z of TpcRatInt parameterization | |
196 | TObjArray* fParamsTPCRat; // Parameterization pieces for TpcRatInt field | |
197 | Float_t fMaxRTPCRat; // max raduis for Solenoid field ratios integral in TPC | |
198 | // | |
199 | Int_t fNParamsDip; // Total number of parameterization pieces for dipole | |
200 | Int_t fNZSegDip; // number of distinct Z segments in Dipole | |
201 | Int_t fNYSegDip; // number of distinct Y segments in Dipole | |
202 | Int_t fNXSegDip; // number of distinct X segments in Dipole | |
203 | Float_t* fSegZDip; //[fNZSegDip] coordinates of distinct Z segments in Dipole | |
204 | Float_t* fSegYDip; //[fNYSegDip] coordinated of Y segments for each Zsegment in Dipole | |
205 | Float_t* fSegXDip; //[fNXSegDip] coordinated of X segments for each Ysegment in Dipole | |
206 | Int_t* fBegSegYDip; //[fNZSegDip] beginning of Y segments array for each Z segment | |
207 | Int_t* fNSegYDip; //[fNZSegDip] number of Y segments for each Z segment | |
208 | Int_t* fBegSegXDip; //[fNYSegDip] beginning of X segments array for each Y segment | |
209 | Int_t* fNSegXDip; //[fNYSegDip] number of X segments for each Y segment | |
210 | Int_t* fSegIDDip; //[fNXSegDip] ID of the dipole parameterization for given XYZ segment | |
211 | Float_t fMinZDip; // Min Z of Dipole parameterization | |
212 | Float_t fMaxZDip; // Max Z of Dipole parameterization | |
213 | TObjArray* fParamsDip; // Parameterization pieces for Dipole field | |
214 | // | |
215 | ClassDef(AliMagWrapCheb,7) // Wrapper class for the set of Chebishev parameterizations of Alice mag.field | |
216 | // | |
217 | }; | |
218 | ||
219 | ||
220 | //__________________________________________________________________________________________ | |
221 | inline void AliMagWrapCheb::FieldCyl(const Double_t *rphiz, Double_t *b) const | |
222 | { | |
223 | // compute field in Cylindircal coordinates | |
224 | // if (rphiz[2]<GetMinZSol() || rphiz[2]>GetMaxZSol() || rphiz[0]>GetMaxRSol()) {for (int i=3;i--;) b[i]=0; return;} | |
225 | b[0] = b[1] = b[2] = 0; | |
226 | FieldCylSol(rphiz,b); | |
227 | } | |
228 | ||
229 | //__________________________________________________________________________________________________ | |
230 | inline void AliMagWrapCheb::CylToCartCylB(const Double_t *rphiz, const Double_t *brphiz,Double_t *bxyz) | |
231 | { | |
232 | // convert field in cylindrical coordinates to cartesian system, point is in cyl.system | |
233 | Double_t btr = TMath::Sqrt(brphiz[0]*brphiz[0]+brphiz[1]*brphiz[1]); | |
234 | Double_t psiPLUSphi = TMath::ATan2(brphiz[1],brphiz[0]) + rphiz[1]; | |
235 | bxyz[0] = btr*TMath::Cos(psiPLUSphi); | |
236 | bxyz[1] = btr*TMath::Sin(psiPLUSphi); | |
237 | bxyz[2] = brphiz[2]; | |
238 | // | |
239 | } | |
240 | ||
241 | //__________________________________________________________________________________________________ | |
242 | inline void AliMagWrapCheb::CylToCartCartB(const Double_t* xyz, const Double_t *brphiz, Double_t *bxyz) | |
243 | { | |
244 | // convert field in cylindrical coordinates to cartesian system, point is in cart.system | |
245 | Double_t btr = TMath::Sqrt(brphiz[0]*brphiz[0]+brphiz[1]*brphiz[1]); | |
246 | Double_t phiPLUSpsi = TMath::ATan2(xyz[1],xyz[0]) + TMath::ATan2(brphiz[1],brphiz[0]); | |
247 | bxyz[0] = btr*TMath::Cos(phiPLUSpsi); | |
248 | bxyz[1] = btr*TMath::Sin(phiPLUSpsi); | |
249 | bxyz[2] = brphiz[2]; | |
250 | // | |
251 | } | |
252 | ||
253 | //__________________________________________________________________________________________________ | |
254 | inline void AliMagWrapCheb::CartToCylCartB(const Double_t *xyz, const Double_t *bxyz, Double_t *brphiz) | |
255 | { | |
256 | // convert field in cylindrical coordinates to cartesian system, poin is in cart.system | |
257 | Double_t btr = TMath::Sqrt(bxyz[0]*bxyz[0]+bxyz[1]*bxyz[1]); | |
258 | Double_t psiMINphi = TMath::ATan2(bxyz[1],bxyz[0]) - TMath::ATan2(xyz[1],xyz[0]); | |
259 | // | |
260 | brphiz[0] = btr*TMath::Cos(psiMINphi); | |
261 | brphiz[1] = btr*TMath::Sin(psiMINphi); | |
262 | brphiz[2] = bxyz[2]; | |
263 | // | |
264 | } | |
265 | ||
266 | //__________________________________________________________________________________________________ | |
267 | inline void AliMagWrapCheb::CartToCylCylB(const Double_t *rphiz, const Double_t *bxyz, Double_t *brphiz) | |
268 | { | |
269 | // convert field in cylindrical coordinates to cartesian system, point is in cyl.system | |
270 | Double_t btr = TMath::Sqrt(bxyz[0]*bxyz[0]+bxyz[1]*bxyz[1]); | |
271 | Double_t psiMINphi = TMath::ATan2(bxyz[1],bxyz[0]) - rphiz[1]; | |
272 | brphiz[0] = btr*TMath::Cos(psiMINphi); | |
273 | brphiz[1] = btr*TMath::Sin(psiMINphi); | |
274 | brphiz[2] = bxyz[2]; | |
275 | // | |
276 | } | |
277 | ||
278 | //__________________________________________________________________________________________________ | |
279 | inline void AliMagWrapCheb::CartToCyl(const Double_t *xyz, Double_t *rphiz) | |
280 | { | |
281 | rphiz[0] = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]); | |
282 | rphiz[1] = TMath::ATan2(xyz[1],xyz[0]); | |
283 | rphiz[2] = xyz[2]; | |
284 | } | |
285 | ||
286 | //__________________________________________________________________________________________________ | |
287 | inline void AliMagWrapCheb::CylToCart(const Double_t *rphiz, Double_t *xyz) | |
288 | { | |
289 | xyz[0] = rphiz[0]*TMath::Cos(rphiz[1]); | |
290 | xyz[1] = rphiz[0]*TMath::Sin(rphiz[1]); | |
291 | xyz[2] = rphiz[2]; | |
292 | } | |
293 | ||
294 | #endif |