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4c039060 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
4c039060 | 16 | |
db83d72f | 17 | #include <TClass.h> |
18 | #include <TFile.h> | |
19 | #include <TSystem.h> | |
33fe5eb1 | 20 | #include <TPRegexp.h> |
fe4da5cc | 21 | |
22 | #include "AliMagF.h" | |
db83d72f | 23 | #include "AliMagWrapCheb.h" |
24 | #include "AliLog.h" | |
972ca52f | 25 | |
fe4da5cc | 26 | ClassImp(AliMagF) |
27 | ||
9251fceb | 28 | const Double_t AliMagF::fgkSol2DipZ = -700.; |
47c3d315 | 29 | const UShort_t AliMagF::fgkPolarityConvention = AliMagF::kConvLHC; |
1dd3d90e | 30 | /* |
31 | Explanation for polarity conventions: these are the mapping between the | |
32 | current signs and main field components in L3 (Bz) and Dipole (Bx) (in Alice frame) | |
33 | 1) kConvMap2005: used for the field mapping in 2005 | |
34 | positive L3 current -> negative Bz | |
35 | positive Dip current -> positive Bx | |
36 | 2) kConvMapDCS2008: defined by the microswitches/cabling of power converters as of 2008 - 1st half 2009 | |
37 | positive L3 current -> positive Bz | |
38 | positive Dip current -> positive Bx | |
39 | 3) kConvLHC : defined by LHC | |
e3eadfac | 40 | positive L3 current -> positive Bz |
1dd3d90e | 41 | positive Dip current -> negative Bx |
42 | ||
43 | Note: only "negative Bz(L3) with postive Bx(Dipole)" and its inverse was mapped in 2005. Hence | |
44 | the GRP Manager will reject the runs with the current combinations (in the convention defined by the | |
45 | static Int_t AliMagF::GetPolarityConvention()) which do not lead to such field polarities. | |
704fefba | 46 | |
47 | ----------------------------------------------- | |
48 | ||
49 | Explanation on integrals in the TPC region | |
50 | GetTPCInt(xyz,b) and GetTPCRatInt(xyz,b) give integrals from point (x,y,z) to point (x,y,0) | |
51 | (irrespectively of the z sign) of the following: | |
52 | TPCInt: b contains int{bx}, int{by}, int{bz} | |
53 | TPCRatInt: b contains int{bx/bz}, int{by/bz}, int{(bx/bz)^2+(by/bz)^2} | |
54 | ||
55 | The same applies to integral in cylindrical coordinates: | |
56 | GetTPCIntCyl(rphiz,b) | |
57 | GetTPCIntRatCyl(rphiz,b) | |
58 | They accept the R,Phi,Z coordinate (-pi<phi<pi) and return the field | |
59 | integrals in cyl. coordinates. | |
60 | ||
61 | Thus, to compute the integral from arbitrary xy_z1 to xy_z2, one should take | |
62 | b = b1-b2 with b1 and b2 coming from GetTPCInt(xy_z1,b1) and GetTPCInt(xy_z2,b2) | |
63 | ||
64 | Note: the integrals are defined for the range -300<Z<300 and 0<R<300 | |
1dd3d90e | 65 | */ |
e2afb3b6 | 66 | //_______________________________________________________________________ |
67 | AliMagF::AliMagF(): | |
db83d72f | 68 | TVirtualMagField(), |
69 | fMeasuredMap(0), | |
70 | fMapType(k5kG), | |
71 | fSolenoid(0), | |
72 | fBeamType(kNoBeamField), | |
73 | fBeamEnergy(0), | |
db83d72f | 74 | // |
e2afb3b6 | 75 | fInteg(0), |
db83d72f | 76 | fPrecInteg(0), |
77 | fFactorSol(1.), | |
78 | fFactorDip(1.), | |
79 | fMax(15), | |
80 | fDipoleOFF(kFALSE), | |
e2afb3b6 | 81 | // |
db83d72f | 82 | fQuadGradient(0), |
83 | fDipoleField(0), | |
84 | fCCorrField(0), | |
85 | fACorr1Field(0), | |
86 | fACorr2Field(0), | |
87 | fParNames("","") | |
88 | { | |
e2afb3b6 | 89 | // Default constructor |
90 | // | |
91 | } | |
92 | ||
93 | //_______________________________________________________________________ | |
4642ac4b | 94 | AliMagF::AliMagF(const char *name, const char* title, Double_t factorSol, Double_t factorDip, |
02233f2b | 95 | BMap_t maptype, BeamType_t bt, Double_t be,Int_t integ, Double_t fmax, const char* path): |
db83d72f | 96 | TVirtualMagField(name), |
97 | fMeasuredMap(0), | |
98 | fMapType(maptype), | |
99 | fSolenoid(0), | |
02233f2b | 100 | fBeamType(bt), |
101 | fBeamEnergy(be), | |
db83d72f | 102 | // |
103 | fInteg(integ), | |
604e0531 | 104 | fPrecInteg(1), |
db83d72f | 105 | fFactorSol(1.), |
106 | fFactorDip(1.), | |
972ca52f | 107 | fMax(fmax), |
db83d72f | 108 | fDipoleOFF(factorDip==0.), |
109 | // | |
110 | fQuadGradient(0), | |
111 | fDipoleField(0), | |
112 | fCCorrField(0), | |
113 | fACorr1Field(0), | |
114 | fACorr2Field(0), | |
115 | fParNames("","") | |
fe4da5cc | 116 | { |
9251fceb | 117 | // Initialize the field with Geant integration option "integ" and max field "fmax, |
118 | // Impose scaling of parameterized L3 field by factorSol and of dipole by factorDip. | |
119 | // The "be" is the energy of the beam in GeV/nucleon | |
aee8290b | 120 | // |
db83d72f | 121 | SetTitle(title); |
122 | if(integ<0 || integ > 2) { | |
123 | AliWarning(Form("Invalid magnetic field flag: %5d; Helix tracking chosen instead",integ)); | |
124 | fInteg = 2; | |
125 | } | |
126 | if (fInteg == 0) fPrecInteg = 0; | |
aee8290b | 127 | // |
4642ac4b | 128 | if (fBeamEnergy<=0 && fBeamType!=kNoBeamField) { |
129 | if (fBeamType == kBeamTypepp) fBeamEnergy = 7000.; // max proton energy | |
1bb7e82c | 130 | else if (fBeamType == kBeamTypeAA) fBeamEnergy = 2760; // max PbPb energy |
c0df5c48 | 131 | else if (fBeamType == kBeamTypepA || fBeamType == kBeamTypeAp) fBeamEnergy = 2760; // same rigitiy max PbPb energy |
4642ac4b | 132 | AliInfo("Maximim possible beam energy for requested beam is assumed"); |
133 | } | |
db83d72f | 134 | const char* parname = 0; |
135 | // | |
f04e7f5f | 136 | if (fMapType == k2kG) parname = fDipoleOFF ? "Sol12_Dip0_Hole":"Sol12_Dip6_Hole"; |
137 | else if (fMapType == k5kG) parname = fDipoleOFF ? "Sol30_Dip0_Hole":"Sol30_Dip6_Hole"; | |
138 | else if (fMapType == k5kGUniform) parname = "Sol30_Dip6_Uniform"; | |
139 | else AliFatal(Form("Unknown field identifier %d is requested\n",fMapType)); | |
db83d72f | 140 | // |
141 | SetDataFileName(path); | |
142 | SetParamName(parname); | |
143 | // | |
db83d72f | 144 | LoadParameterization(); |
145 | InitMachineField(fBeamType,fBeamEnergy); | |
f04e7f5f | 146 | double xyz[3]={0.,0.,0.}; |
147 | fSolenoid = GetBz(xyz); | |
148 | SetFactorSol(factorSol); | |
149 | SetFactorDip(factorDip); | |
77c9a262 | 150 | Print("a"); |
fe4da5cc | 151 | } |
152 | ||
eeda4611 | 153 | //_______________________________________________________________________ |
154 | AliMagF::AliMagF(const AliMagF &src): | |
db83d72f | 155 | TVirtualMagField(src), |
156 | fMeasuredMap(0), | |
157 | fMapType(src.fMapType), | |
158 | fSolenoid(src.fSolenoid), | |
159 | fBeamType(src.fBeamType), | |
160 | fBeamEnergy(src.fBeamEnergy), | |
eeda4611 | 161 | fInteg(src.fInteg), |
162 | fPrecInteg(src.fPrecInteg), | |
db83d72f | 163 | fFactorSol(src.fFactorSol), |
164 | fFactorDip(src.fFactorDip), | |
eeda4611 | 165 | fMax(src.fMax), |
db83d72f | 166 | fDipoleOFF(src.fDipoleOFF), |
167 | fQuadGradient(src.fQuadGradient), | |
168 | fDipoleField(src.fDipoleField), | |
169 | fCCorrField(src.fCCorrField), | |
170 | fACorr1Field(src.fACorr1Field), | |
171 | fACorr2Field(src.fACorr2Field), | |
172 | fParNames(src.fParNames) | |
eeda4611 | 173 | { |
db83d72f | 174 | if (src.fMeasuredMap) fMeasuredMap = new AliMagWrapCheb(*src.fMeasuredMap); |
eeda4611 | 175 | } |
176 | ||
e2afb3b6 | 177 | //_______________________________________________________________________ |
db83d72f | 178 | AliMagF::~AliMagF() |
ff66b122 | 179 | { |
db83d72f | 180 | delete fMeasuredMap; |
181 | } | |
182 | ||
183 | //_______________________________________________________________________ | |
184 | Bool_t AliMagF::LoadParameterization() | |
185 | { | |
186 | if (fMeasuredMap) { | |
706eaf0b | 187 | AliFatal(Form("Field data %s are already loaded from %s\n",GetParamName(),GetDataFileName())); |
db83d72f | 188 | } |
ff66b122 | 189 | // |
db83d72f | 190 | char* fname = gSystem->ExpandPathName(GetDataFileName()); |
191 | TFile* file = TFile::Open(fname); | |
192 | if (!file) { | |
af19d8b9 | 193 | AliFatal(Form("Failed to open magnetic field data file %s\n",fname)); |
db83d72f | 194 | } |
ff66b122 | 195 | // |
db83d72f | 196 | fMeasuredMap = dynamic_cast<AliMagWrapCheb*>(file->Get(GetParamName())); |
197 | if (!fMeasuredMap) { | |
af19d8b9 | 198 | AliFatal(Form("Did not find field %s in %s\n",GetParamName(),fname)); |
db83d72f | 199 | } |
200 | file->Close(); | |
201 | delete file; | |
202 | return kTRUE; | |
ff66b122 | 203 | } |
204 | ||
db83d72f | 205 | |
ff66b122 | 206 | //_______________________________________________________________________ |
db83d72f | 207 | void AliMagF::Field(const Double_t *xyz, Double_t *b) |
fe4da5cc | 208 | { |
db83d72f | 209 | // Method to calculate the field at point xyz |
aee8290b | 210 | // |
9251fceb | 211 | // b[0]=b[1]=b[2]=0.0; |
212 | if (fMeasuredMap && xyz[2]>fMeasuredMap->GetMinZ() && xyz[2]<fMeasuredMap->GetMaxZ()) { | |
db83d72f | 213 | fMeasuredMap->Field(xyz,b); |
214 | if (xyz[2]>fgkSol2DipZ || fDipoleOFF) for (int i=3;i--;) b[i] *= fFactorSol; | |
9251fceb | 215 | else for (int i=3;i--;) b[i] *= fFactorDip; |
db83d72f | 216 | } |
9251fceb | 217 | else MachineField(xyz, b); |
aee8290b | 218 | // |
fe4da5cc | 219 | } |
eeda4611 | 220 | |
221 | //_______________________________________________________________________ | |
db83d72f | 222 | Double_t AliMagF::GetBz(const Double_t *xyz) const |
eeda4611 | 223 | { |
db83d72f | 224 | // Method to calculate the field at point xyz |
225 | // | |
9251fceb | 226 | if (fMeasuredMap && xyz[2]>fMeasuredMap->GetMinZ() && xyz[2]<fMeasuredMap->GetMaxZ()) { |
227 | double bz = fMeasuredMap->GetBz(xyz); | |
228 | return (xyz[2]>fgkSol2DipZ || fDipoleOFF) ? bz*fFactorSol : bz*fFactorDip; | |
db83d72f | 229 | } |
9251fceb | 230 | else return 0.; |
eeda4611 | 231 | } |
232 | ||
233 | //_______________________________________________________________________ | |
db83d72f | 234 | AliMagF& AliMagF::operator=(const AliMagF& src) |
eeda4611 | 235 | { |
e99fb5c9 | 236 | if (this != &src) { |
237 | if (src.fMeasuredMap) { | |
238 | if (fMeasuredMap) delete fMeasuredMap; | |
239 | fMeasuredMap = new AliMagWrapCheb(*src.fMeasuredMap); | |
240 | } | |
db83d72f | 241 | SetName(src.GetName()); |
242 | fSolenoid = src.fSolenoid; | |
243 | fBeamType = src.fBeamType; | |
244 | fBeamEnergy = src.fBeamEnergy; | |
db83d72f | 245 | fInteg = src.fInteg; |
246 | fPrecInteg = src.fPrecInteg; | |
247 | fFactorSol = src.fFactorSol; | |
248 | fFactorDip = src.fFactorDip; | |
249 | fMax = src.fMax; | |
250 | fDipoleOFF = src.fDipoleOFF; | |
251 | fParNames = src.fParNames; | |
252 | } | |
253 | return *this; | |
eeda4611 | 254 | } |
255 | ||
256 | //_______________________________________________________________________ | |
db83d72f | 257 | void AliMagF::InitMachineField(BeamType_t btype, Double_t benergy) |
eeda4611 | 258 | { |
4642ac4b | 259 | if (btype==kNoBeamField) { |
db83d72f | 260 | fQuadGradient = fDipoleField = fCCorrField = fACorr1Field = fACorr2Field = 0.; |
9251fceb | 261 | return; |
db83d72f | 262 | } |
263 | // | |
9251fceb | 264 | double rigScale = benergy/7000.; // scale according to ratio of E/Enominal |
265 | // for ions assume PbPb (with energy provided per nucleon) and account for A/Z | |
6d3c4556 | 266 | if (btype==kBeamTypeAA || btype==kBeamTypepA || btype==kBeamTypeAp) rigScale *= 208./82.; |
9251fceb | 267 | // |
268 | fQuadGradient = 22.0002*rigScale; | |
269 | fDipoleField = 37.8781*rigScale; | |
270 | // | |
271 | // SIDE C | |
272 | fCCorrField = -9.6980; | |
273 | // SIDE A | |
274 | fACorr1Field = -13.2247; | |
275 | fACorr2Field = 11.7905; | |
db83d72f | 276 | // |
eeda4611 | 277 | } |
eed8a1a2 | 278 | |
db83d72f | 279 | //_______________________________________________________________________ |
280 | void AliMagF::MachineField(const Double_t *x, Double_t *b) const | |
eed8a1a2 | 281 | { |
db83d72f | 282 | // ---- This is the ZDC part |
9251fceb | 283 | // Compansators for Alice Muon Arm Dipole |
284 | const Double_t kBComp1CZ = 1075., kBComp1hDZ = 260./2., kBComp1SqR = 4.0*4.0; | |
285 | const Double_t kBComp2CZ = 2049., kBComp2hDZ = 153./2., kBComp2SqR = 4.5*4.5; | |
286 | // | |
287 | const Double_t kTripQ1CZ = 2615., kTripQ1hDZ = 637./2., kTripQ1SqR = 3.5*3.5; | |
90ae20c9 | 288 | const Double_t kTripQ2CZ = 3480., kTripQ2hDZ = 550./2., kTripQ2SqR = 3.5*3.5; |
9251fceb | 289 | const Double_t kTripQ3CZ = 4130., kTripQ3hDZ = 550./2., kTripQ3SqR = 3.5*3.5; |
290 | const Double_t kTripQ4CZ = 5015., kTripQ4hDZ = 637./2., kTripQ4SqR = 3.5*3.5; | |
db83d72f | 291 | // |
9251fceb | 292 | const Double_t kDip1CZ = 6310.8, kDip1hDZ = 945./2., kDip1SqRC = 4.5*4.5, kDip1SqRA = 3.375*3.375; |
293 | const Double_t kDip2CZ = 12640.3, kDip2hDZ = 945./2., kDip2SqRC = 4.5*4.5, kDip2SqRA = 3.75*3.75; | |
294 | const Double_t kDip2DXC = 9.7, kDip2DXA = 9.4; | |
db83d72f | 295 | // |
296 | double rad2 = x[0] * x[0] + x[1] * x[1]; | |
297 | // | |
9251fceb | 298 | b[0] = b[1] = b[2] = 0; |
299 | // | |
db83d72f | 300 | // SIDE C ************************************************** |
301 | if(x[2]<0.){ | |
9251fceb | 302 | if(TMath::Abs(x[2]+kBComp2CZ)<kBComp2hDZ && rad2 < kBComp2SqR){ |
303 | b[0] = fCCorrField*fFactorDip; | |
db83d72f | 304 | } |
9251fceb | 305 | else if(TMath::Abs(x[2]+kTripQ1CZ)<kTripQ1hDZ && rad2 < kTripQ1SqR){ |
db83d72f | 306 | b[0] = fQuadGradient*x[1]; |
307 | b[1] = fQuadGradient*x[0]; | |
db83d72f | 308 | } |
9251fceb | 309 | else if(TMath::Abs(x[2]+kTripQ2CZ)<kTripQ2hDZ && rad2 < kTripQ2SqR){ |
db83d72f | 310 | b[0] = -fQuadGradient*x[1]; |
311 | b[1] = -fQuadGradient*x[0]; | |
db83d72f | 312 | } |
9251fceb | 313 | else if(TMath::Abs(x[2]+kTripQ3CZ)<kTripQ3hDZ && rad2 < kTripQ3SqR){ |
db83d72f | 314 | b[0] = -fQuadGradient*x[1]; |
315 | b[1] = -fQuadGradient*x[0]; | |
db83d72f | 316 | } |
9251fceb | 317 | else if(TMath::Abs(x[2]+kTripQ4CZ)<kTripQ4hDZ && rad2 < kTripQ4SqR){ |
db83d72f | 318 | b[0] = fQuadGradient*x[1]; |
319 | b[1] = fQuadGradient*x[0]; | |
db83d72f | 320 | } |
9251fceb | 321 | else if(TMath::Abs(x[2]+kDip1CZ)<kDip1hDZ && rad2 < kDip1SqRC){ |
db83d72f | 322 | b[1] = fDipoleField; |
db83d72f | 323 | } |
9251fceb | 324 | else if(TMath::Abs(x[2]+kDip2CZ)<kDip2hDZ && rad2 < kDip2SqRC) { |
325 | double dxabs = TMath::Abs(x[0])-kDip2DXC; | |
326 | if ( (dxabs*dxabs + x[1]*x[1])<kDip2SqRC) { | |
db83d72f | 327 | b[1] = -fDipoleField; |
db83d72f | 328 | } |
329 | } | |
330 | } | |
331 | // | |
332 | // SIDE A ************************************************** | |
333 | else{ | |
9251fceb | 334 | if(TMath::Abs(x[2]-kBComp1CZ)<kBComp1hDZ && rad2 < kBComp1SqR) { |
db83d72f | 335 | // Compensator magnet at z = 1075 m |
9251fceb | 336 | b[0] = fACorr1Field*fFactorDip; |
db83d72f | 337 | } |
338 | // | |
9251fceb | 339 | if(TMath::Abs(x[2]-kBComp2CZ)<kBComp2hDZ && rad2 < kBComp2SqR){ |
340 | b[0] = fACorr2Field*fFactorDip; | |
341 | } | |
342 | else if(TMath::Abs(x[2]-kTripQ1CZ)<kTripQ1hDZ && rad2 < kTripQ1SqR){ | |
db83d72f | 343 | b[0] = -fQuadGradient*x[1]; |
344 | b[1] = -fQuadGradient*x[0]; | |
eed8a1a2 | 345 | } |
9251fceb | 346 | else if(TMath::Abs(x[2]-kTripQ2CZ)<kTripQ2hDZ && rad2 < kTripQ2SqR){ |
347 | b[0] = fQuadGradient*x[1]; | |
348 | b[1] = fQuadGradient*x[0]; | |
eed8a1a2 | 349 | } |
9251fceb | 350 | else if(TMath::Abs(x[2]-kTripQ3CZ)<kTripQ3hDZ && rad2 < kTripQ3SqR){ |
351 | b[0] = fQuadGradient*x[1]; | |
352 | b[1] = fQuadGradient*x[0]; | |
db83d72f | 353 | } |
9251fceb | 354 | else if(TMath::Abs(x[2]-kTripQ4CZ)<kTripQ4hDZ && rad2 < kTripQ4SqR){ |
db83d72f | 355 | b[0] = -fQuadGradient*x[1]; |
356 | b[1] = -fQuadGradient*x[0]; | |
db83d72f | 357 | } |
9251fceb | 358 | else if(TMath::Abs(x[2]-kDip1CZ)<kDip1hDZ && rad2 < kDip1SqRA){ |
db83d72f | 359 | b[1] = -fDipoleField; |
db83d72f | 360 | } |
9251fceb | 361 | else if(TMath::Abs(x[2]-kDip2CZ)<kDip2hDZ && rad2 < kDip2SqRA) { |
362 | double dxabs = TMath::Abs(x[0])-kDip2DXA; | |
363 | if ( (dxabs*dxabs + x[1]*x[1])<kDip2SqRA) { | |
db83d72f | 364 | b[1] = fDipoleField; |
365 | } | |
366 | } | |
367 | } | |
9251fceb | 368 | // |
db83d72f | 369 | } |
370 | ||
371 | //_______________________________________________________________________ | |
372 | void AliMagF::GetTPCInt(const Double_t *xyz, Double_t *b) const | |
373 | { | |
47c3d315 | 374 | // Method to calculate the integral_0^z of br,bt,bz |
db83d72f | 375 | b[0]=b[1]=b[2]=0.0; |
376 | if (fMeasuredMap) { | |
377 | fMeasuredMap->GetTPCInt(xyz,b); | |
378 | for (int i=3;i--;) b[i] *= fFactorSol; | |
379 | } | |
380 | } | |
381 | ||
47c3d315 | 382 | //_______________________________________________________________________ |
383 | void AliMagF::GetTPCRatInt(const Double_t *xyz, Double_t *b) const | |
384 | { | |
385 | // Method to calculate the integral_0^z of bx/bz,by/bz and (bx/bz)^2+(by/bz)^2 | |
386 | b[0]=b[1]=b[2]=0.0; | |
387 | if (fMeasuredMap) { | |
388 | fMeasuredMap->GetTPCRatInt(xyz,b); | |
389 | b[2] /= 100; | |
390 | } | |
391 | } | |
392 | ||
db83d72f | 393 | //_______________________________________________________________________ |
394 | void AliMagF::GetTPCIntCyl(const Double_t *rphiz, Double_t *b) const | |
395 | { | |
47c3d315 | 396 | // Method to calculate the integral_0^z of br,bt,bz |
db83d72f | 397 | // in cylindrical coordiates ( -pi<phi<pi convention ) |
398 | b[0]=b[1]=b[2]=0.0; | |
399 | if (fMeasuredMap) { | |
400 | fMeasuredMap->GetTPCIntCyl(rphiz,b); | |
401 | for (int i=3;i--;) b[i] *= fFactorSol; | |
402 | } | |
eed8a1a2 | 403 | } |
1dd3d90e | 404 | |
47c3d315 | 405 | //_______________________________________________________________________ |
406 | void AliMagF::GetTPCRatIntCyl(const Double_t *rphiz, Double_t *b) const | |
407 | { | |
408 | // Method to calculate the integral_0^z of bx/bz,by/bz and (bx/bz)^2+(by/bz)^2 | |
409 | // in cylindrical coordiates ( -pi<phi<pi convention ) | |
410 | b[0]=b[1]=b[2]=0.0; | |
411 | if (fMeasuredMap) { | |
412 | fMeasuredMap->GetTPCRatIntCyl(rphiz,b); | |
413 | b[2] /= 100; | |
414 | } | |
415 | } | |
416 | ||
1dd3d90e | 417 | //_______________________________________________________________________ |
418 | void AliMagF::SetFactorSol(Float_t fc) | |
419 | { | |
420 | // set the sign/scale of the current in the L3 according to fgkPolarityConvention | |
421 | switch (fgkPolarityConvention) { | |
422 | case kConvDCS2008: fFactorSol = -fc; break; | |
423 | case kConvLHC : fFactorSol = -fc; break; | |
424 | default : fFactorSol = fc; break; // case kConvMap2005: fFactorSol = fc; break; | |
425 | } | |
426 | } | |
427 | ||
428 | //_______________________________________________________________________ | |
429 | void AliMagF::SetFactorDip(Float_t fc) | |
430 | { | |
431 | // set the sign*scale of the current in the Dipole according to fgkPolarityConvention | |
432 | switch (fgkPolarityConvention) { | |
433 | case kConvDCS2008: fFactorDip = fc; break; | |
434 | case kConvLHC : fFactorDip = -fc; break; | |
435 | default : fFactorDip = fc; break; // case kConvMap2005: fFactorDip = fc; break; | |
436 | } | |
437 | } | |
438 | ||
439 | //_______________________________________________________________________ | |
440 | Double_t AliMagF::GetFactorSol() const | |
441 | { | |
442 | // return the sign*scale of the current in the Dipole according to fgkPolarityConventionthe | |
443 | switch (fgkPolarityConvention) { | |
444 | case kConvDCS2008: return -fFactorSol; | |
445 | case kConvLHC : return -fFactorSol; | |
446 | default : return fFactorSol; // case kConvMap2005: return fFactorSol; | |
447 | } | |
448 | } | |
449 | ||
450 | //_______________________________________________________________________ | |
451 | Double_t AliMagF::GetFactorDip() const | |
452 | { | |
453 | // return the sign*scale of the current in the Dipole according to fgkPolarityConventionthe | |
454 | switch (fgkPolarityConvention) { | |
455 | case kConvDCS2008: return fFactorDip; | |
456 | case kConvLHC : return -fFactorDip; | |
457 | default : return fFactorDip; // case kConvMap2005: return fFactorDip; | |
458 | } | |
459 | } | |
33fe5eb1 | 460 | |
461 | //_____________________________________________________________________________ | |
462 | AliMagF* AliMagF::CreateFieldMap(Float_t l3Cur, Float_t diCur, Int_t convention, Bool_t uniform, | |
5cf76849 | 463 | Float_t beamenergy, const Char_t *beamtype, const Char_t *path) |
33fe5eb1 | 464 | { |
465 | //------------------------------------------------ | |
466 | // The magnetic field map, defined externally... | |
467 | // L3 current 30000 A -> 0.5 T | |
468 | // L3 current 12000 A -> 0.2 T | |
469 | // dipole current 6000 A | |
470 | // The polarities must match the convention (LHC or DCS2008) | |
471 | // unless the special uniform map was used for MC | |
472 | //------------------------------------------------ | |
473 | const Float_t l3NominalCurrent1=30000.; // (A) | |
474 | const Float_t l3NominalCurrent2=12000.; // (A) | |
475 | const Float_t diNominalCurrent =6000. ; // (A) | |
476 | ||
477 | const Float_t tolerance=0.03; // relative current tolerance | |
478 | const Float_t zero=77.; // "zero" current (A) | |
479 | // | |
3b94b44f | 480 | BMap_t map = k5kG; |
33fe5eb1 | 481 | double sclL3,sclDip; |
482 | // | |
483 | Float_t l3Pol = l3Cur > 0 ? 1:-1; | |
484 | Float_t diPol = diCur > 0 ? 1:-1; | |
485 | ||
486 | l3Cur = TMath::Abs(l3Cur); | |
487 | diCur = TMath::Abs(diCur); | |
488 | // | |
489 | if (TMath::Abs((sclDip=diCur/diNominalCurrent)-1.) > tolerance && !uniform) { | |
490 | if (diCur <= zero) sclDip = 0.; // some small current.. -> Dipole OFF | |
491 | else { | |
706eaf0b | 492 | AliFatalGeneral("AliMagF",Form("Wrong dipole current (%f A)!",diCur)); |
33fe5eb1 | 493 | } |
494 | } | |
495 | // | |
496 | if (uniform) { | |
497 | // special treatment of special MC with uniform mag field (normalized to 0.5 T) | |
498 | // no check for scaling/polarities are done | |
499 | map = k5kGUniform; | |
500 | sclL3 = l3Cur/l3NominalCurrent1; | |
501 | } | |
502 | else { | |
503 | if (TMath::Abs((sclL3=l3Cur/l3NominalCurrent1)-1.) < tolerance) map = k5kG; | |
504 | else if (TMath::Abs((sclL3=l3Cur/l3NominalCurrent2)-1.) < tolerance) map = k2kG; | |
e0418f7d | 505 | else if (l3Cur <= zero && diCur<=zero) { sclL3=0; sclDip=0; map = k5kGUniform;} |
33fe5eb1 | 506 | else { |
706eaf0b | 507 | AliFatalGeneral("AliMagF",Form("Wrong L3 current (%f A)!",l3Cur)); |
33fe5eb1 | 508 | } |
509 | } | |
510 | // | |
17c30c5b | 511 | if (sclDip!=0 && map!=k5kGUniform) { |
512 | if ( (l3Cur<=zero) || ((convention==kConvLHC && l3Pol!=diPol) || (convention==kConvDCS2008 && l3Pol==diPol)) ) { | |
706eaf0b | 513 | AliFatalGeneral("AliMagF",Form("Wrong combination for L3/Dipole polarities (%c/%c) for convention %d", |
17c30c5b | 514 | l3Pol>0?'+':'-',diPol>0?'+':'-',GetPolarityConvention())); |
17c30c5b | 515 | } |
33fe5eb1 | 516 | } |
517 | // | |
518 | if (l3Pol<0) sclL3 = -sclL3; | |
519 | if (diPol<0) sclDip = -sclDip; | |
520 | // | |
521 | BeamType_t btype = kNoBeamField; | |
522 | TString btypestr = beamtype; | |
523 | btypestr.ToLower(); | |
524 | TPRegexp protonBeam("(proton|p)\\s*-?\\s*\\1"); | |
c0df5c48 | 525 | TPRegexp ionBeam("(lead|pb|ion|a|A)\\s*-?\\s*\\1"); |
526 | TPRegexp protonionBeam("(proton|p)\\s*-?\\s*(lead|pb|ion|a|A)"); | |
527 | TPRegexp ionprotonBeam("(lead|pb|ion|a|A)\\s*-?\\s*(proton|p)"); | |
33fe5eb1 | 528 | if (btypestr.Contains(ionBeam)) btype = kBeamTypeAA; |
529 | else if (btypestr.Contains(protonBeam)) btype = kBeamTypepp; | |
c0df5c48 | 530 | else if (btypestr.Contains(protonionBeam)) btype = kBeamTypepA; |
531 | else if (btypestr.Contains(ionprotonBeam)) btype = kBeamTypeAp; | |
33fe5eb1 | 532 | else AliInfoGeneral("AliMagF",Form("Assume no LHC magnet field for the beam type %s, ",beamtype)); |
533 | char ttl[80]; | |
f8b1c575 | 534 | snprintf(ttl,79,"L3: %+5d Dip: %+4d kA; %s | Polarities in %s convention",(int)TMath::Sign(l3Cur,float(sclL3)), |
33fe5eb1 | 535 | (int)TMath::Sign(diCur,float(sclDip)),uniform ? " Constant":"", |
536 | convention==kConvLHC ? "LHC":"DCS2008"); | |
537 | // LHC and DCS08 conventions have opposite dipole polarities | |
538 | if ( GetPolarityConvention() != convention) sclDip = -sclDip; | |
539 | // | |
5cf76849 | 540 | return new AliMagF("MagneticFieldMap", ttl,sclL3,sclDip,map,btype,beamenergy,2,10.,path); |
33fe5eb1 | 541 | // |
542 | } | |
543 | ||
544 | //_____________________________________________________________________________ | |
545 | const char* AliMagF::GetBeamTypeText() const | |
546 | { | |
339fbe23 | 547 | // beam type in text form |
33fe5eb1 | 548 | const char *beamNA = "No Beam"; |
549 | const char *beamPP = "p-p"; | |
c0df5c48 | 550 | const char *beamPbPb= "A-A"; |
551 | const char *beamPPb = "p-A"; | |
552 | const char *beamPbP = "A-p"; | |
33fe5eb1 | 553 | switch ( fBeamType ) { |
554 | case kBeamTypepp : return beamPP; | |
555 | case kBeamTypeAA : return beamPbPb; | |
c0df5c48 | 556 | case kBeamTypepA : return beamPPb; |
557 | case kBeamTypeAp : return beamPbP; | |
33fe5eb1 | 558 | case kNoBeamField: |
559 | default: return beamNA; | |
560 | } | |
561 | } | |
562 | ||
77c9a262 | 563 | //_____________________________________________________________________________ |
564 | void AliMagF::Print(Option_t *opt) const | |
565 | { | |
566 | // print short or long info | |
567 | TString opts = opt; opts.ToLower(); | |
568 | AliInfo(Form("%s:%s",GetName(),GetTitle())); | |
569 | AliInfo(Form("Solenoid (%+.2f*)%.0f kG, Dipole %s (%+.2f) %s", | |
570 | GetFactorSol(),(fMapType==k5kG||fMapType==k5kGUniform)?5.:2., | |
571 | fDipoleOFF ? "OFF":"ON",GetFactorDip(),fMapType==k5kGUniform?" |Constant Field!":"")); | |
572 | if (opts.Contains("a")) { | |
573 | AliInfo(Form("Machine B fields for %s beam (%.0f GeV): QGrad: %.4f Dipole: %.4f", | |
c0df5c48 | 574 | GetBeamTypeText(), |
77c9a262 | 575 | fBeamEnergy,fQuadGradient,fDipoleField)); |
576 | AliInfo(Form("Uses %s of %s",GetParamName(),GetDataFileName())); | |
577 | } | |
578 | } |