| 7984e5f7 |
1 | // |
| 2 | // Utilities used in the forward multiplcity analysis |
| 3 | // |
| 4 | // |
| 7e4038b5 |
5 | #include "AliForwardUtil.h" |
| 1ff25622 |
6 | //#include <ARVersion.h> |
| 9d99b0dd |
7 | #include <AliAnalysisManager.h> |
| 8 | #include "AliAODForwardMult.h" |
| 9 | #include <AliLog.h> |
| 10 | #include <AliInputEventHandler.h> |
| 290052e7 |
11 | #include <AliAODInputHandler.h> |
| 12 | #include <AliAODHandler.h> |
| 13 | #include <AliAODEvent.h> |
| 9d99b0dd |
14 | #include <AliESDEvent.h> |
| 290052e7 |
15 | #include <AliAnalysisTaskSE.h> |
| 9d99b0dd |
16 | #include <AliPhysicsSelection.h> |
| 17 | #include <AliTriggerAnalysis.h> |
| 18 | #include <AliMultiplicity.h> |
| 241cca4d |
19 | #include <TParameter.h> |
| 7e4038b5 |
20 | #include <TH2D.h> |
| 9d99b0dd |
21 | #include <TH1I.h> |
| 7f759bb7 |
22 | #include <TF1.h> |
| 23 | #include <TFitResult.h> |
| 7e4038b5 |
24 | #include <TMath.h> |
| 7f759bb7 |
25 | #include <TError.h> |
| f53fb4f6 |
26 | #include <TROOT.h> |
| e65b8b56 |
27 | #define FIT_OPTIONS "RNQS" |
| 7f759bb7 |
28 | |
| 1ff25622 |
29 | //==================================================================== |
| 30 | ULong_t AliForwardUtil::AliROOTRevision() |
| 31 | { |
| 32 | #ifdef ALIROOT_SVN_REVISION |
| 33 | return ALIROOT_SVN_REVISION; |
| 34 | #else |
| 35 | return 0; |
| 36 | #endif |
| 37 | } |
| 38 | //____________________________________________________________________ |
| 39 | ULong_t AliForwardUtil::AliROOTBranch() |
| 40 | { |
| 41 | #ifdef ALIROOT_SVN_BRANCH |
| 42 | static ULong_t ret = 0; |
| 43 | if (ret != 0) return ret; |
| 44 | |
| 45 | TString str(ALIROOT_SVN_BRANCH); |
| 46 | if (str[0] == 'v') str.Remove(0,1); |
| 47 | if (str.EqualTo("trunk")) return ret = 0xFFFFFFFF; |
| 48 | |
| 49 | TObjArray* tokens = str.Tokenize("-"); |
| 50 | TObjString* pMajor = static_cast<TObjString*>(tokens->At(0)); |
| 51 | TObjString* pMinor = static_cast<TObjString*>(tokens->At(1)); |
| 52 | TObjString* pRelea = static_cast<TObjString*>(tokens->At(2)); |
| 53 | TObjString* pAn = (tokens->GetEntries() > 3 ? |
| 54 | static_cast<TObjString*>(tokens->At(3)) : 0); |
| 55 | TString sMajor = pMajor->String().Strip(TString::kLeading, '0'); |
| 56 | TString sMinor = pMinor->String().Strip(TString::kLeading, '0'); |
| 57 | TString sRelea = pRelea->String().Strip(TString::kLeading, '0'); |
| 58 | |
| 59 | ret = (((sMajor.Atoi() & 0xFF) << 12) | |
| 60 | ((sMinor.Atoi() & 0xFF) << 8) | |
| 61 | ((sRelea.Atoi() & 0xFF) << 4) | |
| 62 | (pAn ? 0xAA : 0)); |
| 63 | |
| 64 | return ret; |
| 65 | #else |
| 66 | return 0; |
| 67 | #endif |
| 68 | } |
| 69 | |
| 0bd4b00f |
70 | //==================================================================== |
| 71 | UShort_t |
| 72 | AliForwardUtil::ParseCollisionSystem(const char* sys) |
| 73 | { |
| 7984e5f7 |
74 | // |
| 75 | // Parse a collision system spec given in a string. Known values are |
| 76 | // |
| 0151a6c6 |
77 | // - "ppb", "p-pb", "pa", "p-a" which returns kPPb |
| 78 | // - "pp", "p-p" which returns kPP |
| 79 | // - "PbPb", "Pb-Pb", "A-A", which returns kPbPb |
| 7984e5f7 |
80 | // - Everything else gives kUnknown |
| 81 | // |
| 82 | // Parameters: |
| 83 | // sys Collision system spec |
| 84 | // |
| 85 | // Return: |
| 86 | // Collision system id |
| 87 | // |
| 0bd4b00f |
88 | TString s(sys); |
| 89 | s.ToLower(); |
| 0151a6c6 |
90 | // we do pA first to avoid pp catch on ppb string (AH) |
| 91 | if (s.Contains("p-pb") || s.Contains("ppb")) return AliForwardUtil::kPPb; |
| 92 | if (s.Contains("p-a") || s.Contains("pa")) return AliForwardUtil::kPPb; |
| d4d486f8 |
93 | if (s.Contains("a-p") || s.Contains("ap")) return AliForwardUtil::kPPb; |
| 0151a6c6 |
94 | if (s.Contains("p-p") || s.Contains("pp")) return AliForwardUtil::kPP; |
| 95 | if (s.Contains("pb-pb") || s.Contains("pbpb")) return AliForwardUtil::kPbPb; |
| 96 | if (s.Contains("a-a") || s.Contains("aa")) return AliForwardUtil::kPbPb; |
| 0bd4b00f |
97 | return AliForwardUtil::kUnknown; |
| 98 | } |
| 99 | //____________________________________________________________________ |
| 100 | const char* |
| 101 | AliForwardUtil::CollisionSystemString(UShort_t sys) |
| 102 | { |
| 7984e5f7 |
103 | // |
| 104 | // Get a string representation of the collision system |
| 105 | // |
| 106 | // Parameters: |
| 107 | // sys Collision system |
| 108 | // - kPP -> "pp" |
| 109 | // - kPbPb -> "PbPb" |
| 110 | // - anything else gives "unknown" |
| 111 | // |
| 112 | // Return: |
| 113 | // String representation of the collision system |
| 114 | // |
| 0bd4b00f |
115 | switch (sys) { |
| 116 | case AliForwardUtil::kPP: return "pp"; |
| 117 | case AliForwardUtil::kPbPb: return "PbPb"; |
| 0151a6c6 |
118 | case AliForwardUtil::kPPb: return "pPb"; |
| 0bd4b00f |
119 | } |
| 120 | return "unknown"; |
| 121 | } |
| 38229ecd |
122 | //____________________________________________________________________ |
| 123 | Float_t |
| 124 | AliForwardUtil::BeamRapidity(Float_t beam, UShort_t z, UShort_t a) |
| 125 | { |
| 126 | const Double_t pMass = 9.38271999999999995e-01; |
| 127 | const Double_t nMass = 9.39564999999999984e-01; |
| 128 | Double_t beamE = z * beam / 2; |
| 129 | Double_t beamM = z * pMass + (a - z) * nMass; |
| 130 | Double_t beamP = TMath::Sqrt(beamE * beamE - beamM * beamM); |
| 131 | Double_t beamY = .5* TMath::Log((beamE+beamP) / (beamE-beamP)); |
| 132 | return beamY; |
| 133 | } |
| 134 | //____________________________________________________________________ |
| 135 | Float_t |
| 136 | AliForwardUtil::CenterOfMassEnergy(Float_t beam, |
| 137 | UShort_t z1, |
| 138 | UShort_t a1, |
| 139 | Short_t z2, |
| 140 | Short_t a2) |
| 141 | { |
| 142 | // Calculate the center of mass energy given target/projectile |
| 143 | // mass and charge numbers |
| 144 | if (z2 < 0) z2 = z1; |
| 145 | if (a2 < 0) a2 = a1; |
| 146 | return TMath::Sqrt(Float_t(z1*z2)/a1/a2) * beam; |
| 147 | } |
| 148 | //____________________________________________________________________ |
| 149 | Float_t |
| 150 | AliForwardUtil::CenterOfMassRapidity(UShort_t z1, |
| 151 | UShort_t a1, |
| 152 | Short_t z2, |
| 153 | Short_t a2) |
| 154 | { |
| 155 | // Calculate the center of mass rapidity (shift) given target/projectile |
| 156 | // mass and charge numbers |
| 157 | if (z2 < 0) z2 = z1; |
| 158 | if (a2 < 0) a2 = a1; |
| 159 | if (z2 == z1 && a2 == a1) return 0; |
| 160 | return .5 * TMath::Log(Float_t(z1*a2)/z2/a1); |
| 161 | } |
| 162 | |
| 4dcc6110 |
163 | namespace { |
| 164 | UShort_t CheckSNN(Float_t energy) |
| 165 | { |
| 166 | if (TMath::Abs(energy - 900.) < 10) return 900; |
| 167 | if (TMath::Abs(energy - 2400.) < 10) return 2400; |
| 168 | if (TMath::Abs(energy - 2760.) < 20) return 2760; |
| 169 | if (TMath::Abs(energy - 4400.) < 10) return 4400; |
| 170 | if (TMath::Abs(energy - 5022.) < 10) return 5023; |
| 171 | if (TMath::Abs(energy - 5500.) < 40) return 5500; |
| 172 | if (TMath::Abs(energy - 7000.) < 10) return 7000; |
| 173 | if (TMath::Abs(energy - 8000.) < 10) return 8000; |
| 174 | if (TMath::Abs(energy - 10000.) < 10) return 10000; |
| 175 | if (TMath::Abs(energy - 14000.) < 10) return 14000; |
| 176 | return 0; |
| 177 | } |
| 178 | } |
| 0bd4b00f |
179 | //____________________________________________________________________ |
| 180 | UShort_t |
| 38229ecd |
181 | AliForwardUtil::ParseCenterOfMassEnergy(UShort_t sys, Float_t beam) |
| 0bd4b00f |
182 | { |
| 7984e5f7 |
183 | // |
| 184 | // Parse the center of mass energy given as a float and return known |
| 185 | // values as a unsigned integer |
| 186 | // |
| 187 | // Parameters: |
| 38229ecd |
188 | // sys Collision system (needed for AA) |
| 189 | // beam Center of mass energy * total charge |
| 7984e5f7 |
190 | // |
| 191 | // Return: |
| 192 | // Center of mass energy per nucleon |
| 193 | // |
| 38229ecd |
194 | Float_t energy = beam; |
| cc83fca2 |
195 | // Below no longer needed apparently |
| 196 | // if (sys == AliForwardUtil::kPbPb) energy = energy / 208 * 82; |
| 38229ecd |
197 | if (sys == AliForwardUtil::kPPb) |
| 198 | energy = CenterOfMassEnergy(beam, 82, 208, 1, 1); |
| 8449e3e0 |
199 | else if (sys == AliForwardUtil::kPbPb) |
| 200 | energy = CenterOfMassEnergy(beam, 82, 208, 82, 208); |
| 4dcc6110 |
201 | UShort_t ret = CheckSNN(energy); |
| 202 | if (ret > 1) return ret; |
| 203 | if (sys == AliForwardUtil::kPbPb || sys == AliForwardUtil::kPPb) { |
| 204 | ret = CheckSNN(beam); |
| 205 | } |
| 206 | return ret; |
| 0bd4b00f |
207 | } |
| 208 | //____________________________________________________________________ |
| 209 | const char* |
| 210 | AliForwardUtil::CenterOfMassEnergyString(UShort_t cms) |
| 211 | { |
| 7984e5f7 |
212 | // |
| 213 | // Get a string representation of the center of mass energy per nuclean |
| 214 | // |
| 215 | // Parameters: |
| 216 | // cms Center of mass energy per nucleon |
| 217 | // |
| 218 | // Return: |
| 219 | // String representation of the center of mass energy per nuclean |
| 220 | // |
| 0bd4b00f |
221 | return Form("%04dGeV", cms); |
| 222 | } |
| 223 | //____________________________________________________________________ |
| 224 | Short_t |
| 225 | AliForwardUtil::ParseMagneticField(Float_t v) |
| 226 | { |
| 7984e5f7 |
227 | // |
| 228 | // Parse the magnetic field (in kG) as given by a floating point number |
| 229 | // |
| 230 | // Parameters: |
| 231 | // field Magnetic field in kG |
| 232 | // |
| 233 | // Return: |
| 234 | // Short integer value of magnetic field in kG |
| 235 | // |
| 0bd4b00f |
236 | if (TMath::Abs(v - 5.) < 1 ) return +5; |
| 237 | if (TMath::Abs(v + 5.) < 1 ) return -5; |
| 238 | if (TMath::Abs(v) < 1) return 0; |
| 239 | return 999; |
| 240 | } |
| 241 | //____________________________________________________________________ |
| 242 | const char* |
| 243 | AliForwardUtil::MagneticFieldString(Short_t f) |
| 244 | { |
| 7984e5f7 |
245 | // |
| 246 | // Get a string representation of the magnetic field |
| 247 | // |
| 248 | // Parameters: |
| 249 | // field Magnetic field in kG |
| 250 | // |
| 251 | // Return: |
| 252 | // String representation of the magnetic field |
| 253 | // |
| 0bd4b00f |
254 | return Form("%01dkG", f); |
| 255 | } |
| 290052e7 |
256 | //_____________________________________________________________________ |
| 257 | AliAODEvent* AliForwardUtil::GetAODEvent(AliAnalysisTaskSE* task) |
| 258 | { |
| 259 | // Check if AOD is the output event |
| 576472c1 |
260 | if (!task) ::Fatal("GetAODEvent", "Null task given, cannot do that"); |
| 261 | |
| 290052e7 |
262 | AliAODEvent* ret = task->AODEvent(); |
| 263 | if (ret) return ret; |
| 264 | |
| 265 | // Check if AOD is the input event |
| 266 | ret = dynamic_cast<AliAODEvent*>(task->InputEvent()); |
| 267 | if (!ret) ::Warning("GetAODEvent", "No AOD event found"); |
| 268 | |
| 269 | return ret; |
| 270 | } |
| 271 | //_____________________________________________________________________ |
| 272 | UShort_t AliForwardUtil::CheckForAOD() |
| 273 | { |
| 274 | AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager(); |
| 275 | if (dynamic_cast<AliAODInputHandler*>(am->GetInputEventHandler())) { |
| 276 | ::Info("CheckForAOD", "Found AOD Input handler"); |
| 277 | return 1; |
| 278 | } |
| 279 | if (dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler())) { |
| 280 | ::Info("CheckForAOD", "Found AOD Output handler"); |
| 281 | return 2; |
| 282 | } |
| 283 | |
| 284 | ::Warning("CheckForAOD", |
| 285 | "Neither and input nor output AOD handler is specified"); |
| 286 | return 0; |
| 287 | } |
| 288 | //_____________________________________________________________________ |
| 289 | Bool_t AliForwardUtil::CheckForTask(const char* clsOrName, Bool_t cls) |
| 290 | { |
| 291 | AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager(); |
| 292 | if (!cls) { |
| 293 | AliAnalysisTask* t = am->GetTask(clsOrName); |
| 294 | if (!t) { |
| 295 | ::Warning("CheckForTask", "Task %s not found in manager", clsOrName); |
| 296 | return false; |
| 297 | } |
| 298 | ::Info("CheckForTask", "Found task %s", clsOrName); |
| 299 | return true; |
| 300 | } |
| 301 | TClass* dep = gROOT->GetClass(clsOrName); |
| 302 | if (!dep) { |
| 303 | ::Warning("CheckForTask", "Unknown class %s for needed task", clsOrName); |
| 304 | return false; |
| 305 | } |
| 306 | TIter next(am->GetTasks()); |
| 307 | TObject* o = 0; |
| 308 | while ((o = next())) { |
| 309 | if (o->IsA()->InheritsFrom(dep)) { |
| 310 | ::Info("CheckForTask", "Found task of class %s: %s", |
| 311 | clsOrName, o->GetName()); |
| 312 | return true; |
| 313 | } |
| 314 | } |
| 315 | ::Warning("CheckForTask", "No task of class %s was found", clsOrName); |
| 316 | return false; |
| 317 | } |
| 318 | |
| 241cca4d |
319 | //_____________________________________________________________________ |
| 320 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, UShort_t value) |
| 321 | { |
| 322 | TParameter<int>* ret = new TParameter<int>(name, value); |
| 8449e3e0 |
323 | ret->SetMergeMode('f'); |
| 241cca4d |
324 | ret->SetUniqueID(value); |
| 325 | return ret; |
| 326 | } |
| 327 | //_____________________________________________________________________ |
| 328 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, Int_t value) |
| 329 | { |
| 330 | TParameter<int>* ret = new TParameter<int>(name, value); |
| 8449e3e0 |
331 | ret->SetMergeMode('f'); |
| 241cca4d |
332 | ret->SetUniqueID(value); |
| 333 | return ret; |
| 334 | } |
| 335 | //_____________________________________________________________________ |
| 1ff25622 |
336 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, ULong_t value) |
| 337 | { |
| 338 | TParameter<Long_t>* ret = new TParameter<Long_t>(name, value); |
| 8449e3e0 |
339 | ret->SetMergeMode('f'); |
| 1ff25622 |
340 | ret->SetUniqueID(value); |
| 341 | return ret; |
| 342 | } |
| 343 | //_____________________________________________________________________ |
| 241cca4d |
344 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, Double_t value) |
| 345 | { |
| 346 | TParameter<double>* ret = new TParameter<double>(name, value); |
| 1f7aa5c7 |
347 | // Float_t v = value; |
| 348 | // UInt_t* tmp = reinterpret_cast<UInt_t*>(&v); |
| 8449e3e0 |
349 | ret->SetMergeMode('f'); |
| 1f7aa5c7 |
350 | // ret->SetUniqueID(*tmp); |
| 241cca4d |
351 | return ret; |
| 352 | } |
| 353 | //_____________________________________________________________________ |
| 354 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, Bool_t value) |
| 355 | { |
| 356 | TParameter<bool>* ret = new TParameter<bool>(name, value); |
| 8449e3e0 |
357 | ret->SetMergeMode('f'); |
| 241cca4d |
358 | ret->SetUniqueID(value); |
| 359 | return ret; |
| 360 | } |
| 361 | |
| 362 | //_____________________________________________________________________ |
| 363 | void AliForwardUtil::GetParameter(TObject* o, UShort_t& value) |
| 364 | { |
| 365 | if (!o) return; |
| 1f7aa5c7 |
366 | TParameter<int>* p = static_cast<TParameter<int>*>(o); |
| e65b8b56 |
367 | if (p->TestBit(BIT(19))) |
| 1f7aa5c7 |
368 | value = p->GetVal(); |
| 369 | else |
| 370 | value = o->GetUniqueID(); |
| 241cca4d |
371 | } |
| 372 | //_____________________________________________________________________ |
| 373 | void AliForwardUtil::GetParameter(TObject* o, Int_t& value) |
| 374 | { |
| 375 | if (!o) return; |
| 1f7aa5c7 |
376 | TParameter<int>* p = static_cast<TParameter<int>*>(o); |
| e65b8b56 |
377 | if (p->TestBit(BIT(19))) |
| 1f7aa5c7 |
378 | value = p->GetVal(); |
| 379 | else |
| 380 | value = o->GetUniqueID(); |
| 241cca4d |
381 | } |
| 382 | //_____________________________________________________________________ |
| 1ff25622 |
383 | void AliForwardUtil::GetParameter(TObject* o, ULong_t& value) |
| 384 | { |
| 385 | if (!o) return; |
| 1f7aa5c7 |
386 | TParameter<Long_t>* p = static_cast<TParameter<Long_t>*>(o); |
| e65b8b56 |
387 | if (p->TestBit(BIT(19))) |
| 1f7aa5c7 |
388 | value = p->GetVal(); |
| 389 | else |
| 390 | value = o->GetUniqueID(); |
| 1ff25622 |
391 | } |
| 392 | //_____________________________________________________________________ |
| 241cca4d |
393 | void AliForwardUtil::GetParameter(TObject* o, Double_t& value) |
| 394 | { |
| 395 | if (!o) return; |
| 1f7aa5c7 |
396 | TParameter<double>* p = static_cast<TParameter<double>*>(o); |
| e65b8b56 |
397 | if (p->TestBit(BIT(19))) |
| 1f7aa5c7 |
398 | value = p->GetVal(); // o->GetUniqueID(); |
| 399 | else { |
| 400 | UInt_t i = o->GetUniqueID(); |
| 401 | Float_t v = *reinterpret_cast<Float_t*>(&i); |
| 402 | value = v; |
| 403 | } |
| 241cca4d |
404 | } |
| 405 | //_____________________________________________________________________ |
| 406 | void AliForwardUtil::GetParameter(TObject* o, Bool_t& value) |
| 407 | { |
| 408 | if (!o) return; |
| 1f7aa5c7 |
409 | TParameter<bool>* p = static_cast<TParameter<bool>*>(o); |
| e65b8b56 |
410 | if (p->TestBit(BIT(19))) |
| 1f7aa5c7 |
411 | value = p->GetVal(); // o->GetUniqueID(); |
| 412 | else |
| 413 | value = o->GetUniqueID(); |
| 241cca4d |
414 | } |
| 290052e7 |
415 | |
| 1f7aa5c7 |
416 | #if 0 |
| 6f4a5c0d |
417 | //_____________________________________________________________________ |
| 5ca83fee |
418 | Double_t AliForwardUtil::GetStripR(Char_t ring, UShort_t strip) |
| 6f4a5c0d |
419 | { |
| 1f7aa5c7 |
420 | // Get max R of ring |
| 421 | // |
| 422 | // Optimized version that has a cache |
| 423 | static TArrayD inner; |
| 424 | static TArrayD outer; |
| 425 | if (inner.GetSize() <= 0 || outer.GetSize() <= 0) { |
| 426 | const Double_t minR[] = { 4.5213, 15.4 }; |
| 427 | const Double_t maxR[] = { 17.2, 28.0 }; |
| 428 | const Int_t nStr[] = { 512, 256 }; |
| 429 | for (Int_t q = 0; q < 2; q++) { |
| 430 | TArrayD& a = (q == 0 ? inner : outer); |
| 431 | a.Set(nStr[q]); |
| 432 | |
| 433 | for (Int_t it = 0; it < nStr[q]; it++) { |
| 434 | Double_t rad = maxR[q] - minR[q]; |
| 435 | Double_t segment = rad / nStr[q]; |
| 436 | Double_t r = minR[q] + segment*strip; |
| 437 | a[it] = r; |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | if (ring == 'I' || ring == 'i') return inner.At(strip); |
| 442 | return outer.At(strip); |
| 443 | } |
| 444 | #else |
| 445 | //_____________________________________________________________________ |
| 446 | Double_t AliForwardUtil::GetStripR(Char_t ring, UShort_t strip) |
| 447 | { |
| 448 | // Get max R of ring |
| 449 | // |
| 450 | // New implementation has only one branch |
| 451 | const Double_t minR[] = { 4.5213, 15.4 }; |
| 452 | const Double_t maxR[] = { 17.2, 28.0 }; |
| 453 | const Int_t nStr[] = { 512, 256 }; |
| 454 | |
| 455 | Int_t q = (ring == 'I' || ring == 'i') ? 0 : 1; |
| 456 | Double_t rad = maxR[q] - minR[q]; |
| 457 | Double_t segment = rad / nStr[q]; |
| 458 | Double_t r = minR[q] + segment*strip; |
| 6f4a5c0d |
459 | |
| 5ca83fee |
460 | return r; |
| 461 | } |
| 1f7aa5c7 |
462 | #endif |
| 5ca83fee |
463 | |
| 1f7aa5c7 |
464 | #if 1 |
| 465 | //_____________________________________________________________________ |
| 466 | Double_t AliForwardUtil::GetEtaFromStrip(UShort_t det, Char_t ring, |
| 467 | UShort_t sec, UShort_t strip, |
| 468 | Double_t zvtx) |
| 469 | { |
| 470 | // Calculate eta from strip with vertex (redundant with |
| 471 | // AliESDFMD::Eta but support displaced vertices) |
| 472 | // |
| 473 | // Slightly more optimized version that uses less branching |
| 474 | |
| 475 | // Get R of the strip |
| 476 | Double_t r = GetStripR(ring, strip); |
| 477 | Int_t hybrid = sec / 2; |
| 478 | Int_t q = (ring == 'I' || ring == 'i') ? 0 : 1; |
| 479 | |
| 480 | const Double_t zs[][2] = { { 320.266, -999999 }, |
| 481 | { 83.666, 74.966 }, |
| 482 | { -63.066, -74.966 } }; |
| 483 | if (det > 3 || zs[det-1][q] == -999999) return -999999; |
| 484 | |
| 485 | Double_t z = zs[det-1][q]; |
| 486 | if ((hybrid % 2) == 0) z -= .5; |
| 487 | |
| 488 | Double_t theta = TMath::ATan2(r,z-zvtx); |
| 489 | Double_t eta = -1*TMath::Log(TMath::Tan(0.5*theta)); |
| 490 | |
| 491 | return eta; |
| 492 | } |
| 493 | #else |
| 5ca83fee |
494 | //_____________________________________________________________________ |
| 495 | Double_t AliForwardUtil::GetEtaFromStrip(UShort_t det, Char_t ring, |
| 496 | UShort_t sec, UShort_t strip, |
| 497 | Double_t zvtx) |
| 498 | { |
| 499 | // Calculate eta from strip with vertex (redundant with |
| 500 | // AliESDFMD::Eta but support displaced vertices) |
| 6f4a5c0d |
501 | |
| 5ca83fee |
502 | //Get max R of ring |
| 503 | Double_t r = GetStripR(ring, strip); |
| 504 | Int_t hybrid = sec / 2; |
| 505 | Bool_t inner = (ring == 'I' || ring == 'i'); |
| 506 | Double_t z = 0; |
| 1f7aa5c7 |
507 | |
| 508 | |
| 6f4a5c0d |
509 | switch (det) { |
| 5ca83fee |
510 | case 1: z = 320.266; break; |
| 511 | case 2: z = (inner ? 83.666 : 74.966); break; |
| 6f4a5c0d |
512 | case 3: z = (inner ? -63.066 : -74.966); break; |
| 513 | default: return -999999; |
| 514 | } |
| 515 | if ((hybrid % 2) == 0) z -= .5; |
| 516 | |
| 517 | Double_t theta = TMath::ATan2(r,z-zvtx); |
| 518 | Double_t eta = -1*TMath::Log(TMath::Tan(0.5*theta)); |
| 519 | |
| 520 | return eta; |
| 521 | } |
| 1f7aa5c7 |
522 | #endif |
| 0bd4b00f |
523 | |
| 5ca83fee |
524 | //_____________________________________________________________________ |
| 525 | Double_t AliForwardUtil::GetPhiFromStrip(Char_t ring, UShort_t strip, |
| 526 | Double_t phi, |
| 527 | Double_t xvtx, Double_t yvtx) |
| 528 | { |
| 529 | // Calculate eta from strip with vertex (redundant with |
| 530 | // AliESDFMD::Eta but support displaced vertices) |
| 531 | |
| 532 | // Unknown x,y -> no change |
| 533 | if (yvtx > 999 || xvtx > 999) return phi; |
| 534 | |
| 535 | //Get max R of ring |
| 536 | Double_t r = GetStripR(ring, strip); |
| 537 | Double_t amp = TMath::Sqrt(xvtx*xvtx+yvtx*yvtx) / r; |
| 538 | Double_t pha = (TMath::Abs(yvtx) < 1e-12 ? 0 : TMath::ATan2(xvtx, yvtx)); |
| 539 | Double_t cha = amp * TMath::Cos(phi+pha); |
| 540 | phi += cha; |
| 541 | if (phi < 0) phi += TMath::TwoPi(); |
| 542 | if (phi > TMath::TwoPi()) phi -= TMath::TwoPi(); |
| 543 | return phi; |
| 544 | } |
| 0bd4b00f |
545 | |
| 7f759bb7 |
546 | //==================================================================== |
| 547 | Int_t AliForwardUtil::fgConvolutionSteps = 100; |
| 548 | Double_t AliForwardUtil::fgConvolutionNSigma = 5; |
| 549 | namespace { |
| 7984e5f7 |
550 | // |
| 551 | // The shift of the most probable value for the ROOT function TMath::Landau |
| 552 | // |
| 7f759bb7 |
553 | const Double_t mpshift = -0.22278298; |
| 7984e5f7 |
554 | // |
| 555 | // Integration normalisation |
| 556 | // |
| 7f759bb7 |
557 | const Double_t invSq2pi = 1. / TMath::Sqrt(2*TMath::Pi()); |
| 558 | |
| 7984e5f7 |
559 | // |
| 560 | // Utility function to use in TF1 defintition |
| 561 | // |
| 7f759bb7 |
562 | Double_t landauGaus1(Double_t* xp, Double_t* pp) |
| 563 | { |
| 564 | Double_t x = xp[0]; |
| c389303e |
565 | Double_t constant = pp[AliForwardUtil::ELossFitter::kC]; |
| 566 | Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta]; |
| 567 | Double_t xi = pp[AliForwardUtil::ELossFitter::kXi]; |
| 568 | Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma]; |
| 1174780f |
569 | Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN]; |
| 7f759bb7 |
570 | |
| 1174780f |
571 | return constant * AliForwardUtil::LandauGaus(x, delta, xi, sigma, sigmaN); |
| 7f759bb7 |
572 | } |
| 573 | |
| 2e658fb9 |
574 | Double_t landauGausComposite(Double_t* xp, Double_t* pp) |
| 575 | { |
| 576 | Double_t x = xp[0]; |
| 577 | Double_t cP = pp[AliForwardUtil::ELossFitter::kC]; |
| 578 | Double_t deltaP = pp[AliForwardUtil::ELossFitter::kDelta]; |
| 579 | Double_t xiP = pp[AliForwardUtil::ELossFitter::kXi]; |
| 580 | Double_t sigmaP = pp[AliForwardUtil::ELossFitter::kSigma]; |
| 581 | Double_t cS = pp[AliForwardUtil::ELossFitter::kSigma+1]; |
| 582 | Double_t deltaS = pp[AliForwardUtil::ELossFitter::kSigma+2]; |
| 583 | Double_t xiS = pp[AliForwardUtil::ELossFitter::kSigma+3]; |
| 584 | Double_t sigmaS = pp[AliForwardUtil::ELossFitter::kSigma+4]; |
| 585 | |
| 586 | return (cP * AliForwardUtil::LandauGaus(x,deltaP,xiP,sigmaP,0) + |
| 587 | cS * AliForwardUtil::LandauGaus(x,deltaS,xiS,sigmaS,0)); |
| 588 | } |
| 589 | |
| 7984e5f7 |
590 | // |
| 591 | // Utility function to use in TF1 defintition |
| 592 | // |
| 7f759bb7 |
593 | Double_t landauGausN(Double_t* xp, Double_t* pp) |
| 594 | { |
| 595 | Double_t x = xp[0]; |
| c389303e |
596 | Double_t constant = pp[AliForwardUtil::ELossFitter::kC]; |
| 597 | Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta]; |
| 598 | Double_t xi = pp[AliForwardUtil::ELossFitter::kXi]; |
| 599 | Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma]; |
| 1174780f |
600 | Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN]; |
| c389303e |
601 | Int_t n = Int_t(pp[AliForwardUtil::ELossFitter::kN]); |
| 602 | Double_t* a = &(pp[AliForwardUtil::ELossFitter::kA]); |
| 7f759bb7 |
603 | |
| 1174780f |
604 | return constant * AliForwardUtil::NLandauGaus(x, delta, xi, sigma, sigmaN, |
| 7f759bb7 |
605 | n, a); |
| 606 | } |
| 7984e5f7 |
607 | // |
| 608 | // Utility function to use in TF1 defintition |
| 609 | // |
| 0bd4b00f |
610 | Double_t landauGausI(Double_t* xp, Double_t* pp) |
| 611 | { |
| 612 | Double_t x = xp[0]; |
| 613 | Double_t constant = pp[AliForwardUtil::ELossFitter::kC]; |
| 614 | Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta]; |
| 615 | Double_t xi = pp[AliForwardUtil::ELossFitter::kXi]; |
| 616 | Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma]; |
| 1174780f |
617 | Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN]; |
| 0bd4b00f |
618 | Int_t i = Int_t(pp[AliForwardUtil::ELossFitter::kN]); |
| 619 | |
| 1174780f |
620 | return constant * AliForwardUtil::ILandauGaus(x,delta,xi,sigma,sigmaN,i); |
| 0bd4b00f |
621 | } |
| 7f759bb7 |
622 | |
| 623 | |
| 624 | } |
| 625 | //____________________________________________________________________ |
| 626 | Double_t |
| 627 | AliForwardUtil::Landau(Double_t x, Double_t delta, Double_t xi) |
| 628 | { |
| 7984e5f7 |
629 | // |
| 630 | // Calculate the shifted Landau |
| 631 | // @f[ |
| 632 | // f'_{L}(x;\Delta,\xi) = f_L(x;\Delta+0.22278298\xi) |
| 633 | // @f] |
| 634 | // |
| 635 | // where @f$ f_{L}@f$ is the ROOT implementation of the Landau |
| 636 | // distribution (known to have @f$ \Delta_{p}=-0.22278298@f$ for |
| 637 | // @f$\Delta=0,\xi=1@f$. |
| 638 | // |
| 639 | // Parameters: |
| 640 | // x Where to evaluate @f$ f'_{L}@f$ |
| 641 | // delta Most probable value |
| 642 | // xi The 'width' of the distribution |
| 643 | // |
| 644 | // Return: |
| 645 | // @f$ f'_{L}(x;\Delta,\xi) @f$ |
| 646 | // |
| 7f759bb7 |
647 | return TMath::Landau(x, delta - xi * mpshift, xi); |
| 648 | } |
| 649 | //____________________________________________________________________ |
| 650 | Double_t |
| 651 | AliForwardUtil::LandauGaus(Double_t x, Double_t delta, Double_t xi, |
| 1174780f |
652 | Double_t sigma, Double_t sigmaN) |
| 7f759bb7 |
653 | { |
| 7984e5f7 |
654 | // |
| 655 | // Calculate the value of a Landau convolved with a Gaussian |
| 656 | // |
| 657 | // @f[ |
| 658 | // f(x;\Delta,\xi,\sigma') = \frac{1}{\sigma' \sqrt{2 \pi}} |
| 659 | // \int_{-\infty}^{+\infty} d\Delta' f'_{L}(x;\Delta',\xi) |
| 660 | // \exp{-\frac{(\Delta-\Delta')^2}{2\sigma'^2}} |
| 661 | // @f] |
| 662 | // |
| 663 | // where @f$ f'_{L}@f$ is the Landau distribution, @f$ \Delta@f$ the |
| 664 | // energy loss, @f$ \xi@f$ the width of the Landau, and |
| 665 | // @f$ \sigma'^2=\sigma^2-\sigma_n^2 @f$. Here, @f$\sigma@f$ is the |
| 666 | // variance of the Gaussian, and @f$\sigma_n@f$ is a parameter modelling |
| 667 | // noise in the detector. |
| 668 | // |
| 669 | // Note that this function uses the constants fgConvolutionSteps and |
| 670 | // fgConvolutionNSigma |
| 671 | // |
| 672 | // References: |
| 673 | // - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> |
| 674 | // - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> |
| 675 | // - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> |
| 676 | // |
| 677 | // Parameters: |
| 678 | // x where to evaluate @f$ f@f$ |
| 679 | // delta @f$ \Delta@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ |
| 680 | // xi @f$ \xi@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ |
| 681 | // sigma @f$ \sigma@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ |
| 682 | // sigma_n @f$ \sigma_n@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ |
| 683 | // |
| 684 | // Return: |
| 685 | // @f$ f@f$ evaluated at @f$ x@f$. |
| 686 | // |
| 7f759bb7 |
687 | Double_t deltap = delta - xi * mpshift; |
| 1174780f |
688 | Double_t sigma2 = sigmaN*sigmaN + sigma*sigma; |
| 689 | Double_t sigma1 = sigmaN == 0 ? sigma : TMath::Sqrt(sigma2); |
| 7f759bb7 |
690 | Double_t xlow = x - fgConvolutionNSigma * sigma1; |
| c389303e |
691 | Double_t xhigh = x + fgConvolutionNSigma * sigma1; |
| 7f759bb7 |
692 | Double_t step = (xhigh - xlow) / fgConvolutionSteps; |
| 693 | Double_t sum = 0; |
| 694 | |
| 695 | for (Int_t i = 0; i <= fgConvolutionSteps/2; i++) { |
| c389303e |
696 | Double_t x1 = xlow + (i - .5) * step; |
| 697 | Double_t x2 = xhigh - (i - .5) * step; |
| 7f759bb7 |
698 | |
| 699 | sum += TMath::Landau(x1, deltap, xi, kTRUE) * TMath::Gaus(x, x1, sigma1); |
| 700 | sum += TMath::Landau(x2, deltap, xi, kTRUE) * TMath::Gaus(x, x2, sigma1); |
| 701 | } |
| 702 | return step * sum * invSq2pi / sigma1; |
| 703 | } |
| 704 | |
| 0bd4b00f |
705 | //____________________________________________________________________ |
| 706 | Double_t |
| 707 | AliForwardUtil::ILandauGaus(Double_t x, Double_t delta, Double_t xi, |
| 1174780f |
708 | Double_t sigma, Double_t sigmaN, Int_t i) |
| 0bd4b00f |
709 | { |
| 7984e5f7 |
710 | // |
| 711 | // Evaluate |
| 712 | // @f[ |
| 713 | // f_i(x;\Delta,\xi,\sigma') = f(x;\Delta_i,\xi_i,\sigma_i') |
| 714 | // @f] |
| 715 | // corresponding to @f$ i@f$ particles i.e., with the substitutions |
| 716 | // @f{eqnarray*}{ |
| 717 | // \Delta \rightarrow \Delta_i &=& i(\Delta + \xi\log(i)) |
| 718 | // \xi \rightarrow \xi_i &=& i \xi |
| 719 | // \sigma \rightarrow \sigma_i &=& \sqrt{i}\sigma |
| 720 | // \sigma'^2 \rightarrow \sigma_i'^2 &=& \sigma_n^2 + \sigma_i^2 |
| 721 | // @f} |
| 722 | // |
| 723 | // Parameters: |
| 724 | // x Where to evaluate |
| 725 | // delta @f$ \Delta@f$ |
| 726 | // xi @f$ \xi@f$ |
| 727 | // sigma @f$ \sigma@f$ |
| 728 | // sigma_n @f$ \sigma_n@f$ |
| 729 | // i @f$ i @f$ |
| 730 | // |
| 731 | // Return: |
| 732 | // @f$ f_i @f$ evaluated |
| 733 | // |
| 1174780f |
734 | Double_t deltaI = (i == 1 ? delta : i * (delta + xi * TMath::Log(i))); |
| 735 | Double_t xiI = i * xi; |
| 736 | Double_t sigmaI = (i == 1 ? sigma : TMath::Sqrt(Double_t(i))*sigma); |
| 737 | if (sigmaI < 1e-10) { |
| 0bd4b00f |
738 | // Fall back to landau |
| 1174780f |
739 | return AliForwardUtil::Landau(x, deltaI, xiI); |
| 0bd4b00f |
740 | } |
| 1174780f |
741 | return AliForwardUtil::LandauGaus(x, deltaI, xiI, sigmaI, sigmaN); |
| 0bd4b00f |
742 | } |
| 743 | |
| 744 | //____________________________________________________________________ |
| 745 | Double_t |
| 746 | AliForwardUtil::IdLandauGausdPar(Double_t x, |
| 747 | UShort_t par, Double_t dPar, |
| 748 | Double_t delta, Double_t xi, |
| 1174780f |
749 | Double_t sigma, Double_t sigmaN, |
| 0bd4b00f |
750 | Int_t i) |
| 751 | { |
| 7984e5f7 |
752 | // |
| 753 | // Numerically evaluate |
| 754 | // @f[ |
| 755 | // \left.\frac{\partial f_i}{\partial p_i}\right|_{x} |
| 756 | // @f] |
| 757 | // where @f$ p_i@f$ is the @f$ i^{\mbox{th}}@f$ parameter. The mapping |
| 758 | // of the parameters is given by |
| 759 | // |
| 760 | // - 0: @f$\Delta@f$ |
| 761 | // - 1: @f$\xi@f$ |
| 762 | // - 2: @f$\sigma@f$ |
| 763 | // - 3: @f$\sigma_n@f$ |
| 764 | // |
| 765 | // This is the partial derivative with respect to the parameter of |
| 766 | // the response function corresponding to @f$ i@f$ particles i.e., |
| 767 | // with the substitutions |
| 768 | // @f[ |
| 769 | // \Delta \rightarrow \Delta_i = i(\Delta + \xi\log(i)) |
| 770 | // \xi \rightarrow \xi_i = i \xi |
| 771 | // \sigma \rightarrow \sigma_i = \sqrt{i}\sigma |
| 772 | // \sigma'^2 \rightarrow \sigma_i'^2 = \sigma_n^2 + \sigma_i^2 |
| 773 | // @f] |
| 774 | // |
| 775 | // Parameters: |
| 776 | // x Where to evaluate |
| 777 | // ipar Parameter number |
| 778 | // dp @f$ \epsilon\delta p_i@f$ for some value of @f$\epsilon@f$ |
| 779 | // delta @f$ \Delta@f$ |
| 780 | // xi @f$ \xi@f$ |
| 781 | // sigma @f$ \sigma@f$ |
| 782 | // sigma_n @f$ \sigma_n@f$ |
| 783 | // i @f$ i@f$ |
| 784 | // |
| 785 | // Return: |
| 786 | // @f$ f_i@f$ evaluated |
| 787 | // |
| 0bd4b00f |
788 | if (dPar == 0) return 0; |
| 789 | Double_t dp = dPar; |
| 790 | Double_t d2 = dPar / 2; |
| 1174780f |
791 | Double_t deltaI = i * (delta + xi * TMath::Log(i)); |
| 792 | Double_t xiI = i * xi; |
| 0bd4b00f |
793 | Double_t si = TMath::Sqrt(Double_t(i)); |
| 1174780f |
794 | Double_t sigmaI = si*sigma; |
| 0bd4b00f |
795 | Double_t y1 = 0; |
| 796 | Double_t y2 = 0; |
| 797 | Double_t y3 = 0; |
| 798 | Double_t y4 = 0; |
| 799 | switch (par) { |
| 800 | case 0: |
| 1174780f |
801 | y1 = ILandauGaus(x, deltaI+i*dp, xiI, sigmaI, sigmaN, i); |
| 802 | y2 = ILandauGaus(x, deltaI+i*d2, xiI, sigmaI, sigmaN, i); |
| 803 | y3 = ILandauGaus(x, deltaI-i*d2, xiI, sigmaI, sigmaN, i); |
| 804 | y4 = ILandauGaus(x, deltaI-i*dp, xiI, sigmaI, sigmaN, i); |
| 0bd4b00f |
805 | break; |
| 806 | case 1: |
| 1174780f |
807 | y1 = ILandauGaus(x, deltaI, xiI+i*dp, sigmaI, sigmaN, i); |
| 808 | y2 = ILandauGaus(x, deltaI, xiI+i*d2, sigmaI, sigmaN, i); |
| 809 | y3 = ILandauGaus(x, deltaI, xiI-i*d2, sigmaI, sigmaN, i); |
| 810 | y4 = ILandauGaus(x, deltaI, xiI-i*dp, sigmaI, sigmaN, i); |
| 0bd4b00f |
811 | break; |
| 812 | case 2: |
| 1174780f |
813 | y1 = ILandauGaus(x, deltaI, xiI, sigmaI+si*dp, sigmaN, i); |
| 814 | y2 = ILandauGaus(x, deltaI, xiI, sigmaI+si*d2, sigmaN, i); |
| 815 | y3 = ILandauGaus(x, deltaI, xiI, sigmaI-si*d2, sigmaN, i); |
| 816 | y4 = ILandauGaus(x, deltaI, xiI, sigmaI-si*dp, sigmaN, i); |
| 0bd4b00f |
817 | break; |
| 818 | case 3: |
| 1174780f |
819 | y1 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN+dp, i); |
| 820 | y2 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN+d2, i); |
| 821 | y3 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN-d2, i); |
| 822 | y4 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN-dp, i); |
| 0bd4b00f |
823 | break; |
| 824 | default: |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | Double_t d0 = y1 - y4; |
| 829 | Double_t d1 = 2 * (y2 - y3); |
| 830 | |
| 831 | Double_t g = 1/(2*dp) * (4*d1 - d0) / 3; |
| 832 | |
| 833 | return g; |
| 834 | } |
| 835 | |
| 7f759bb7 |
836 | //____________________________________________________________________ |
| 837 | Double_t |
| 838 | AliForwardUtil::NLandauGaus(Double_t x, Double_t delta, Double_t xi, |
| 1174780f |
839 | Double_t sigma, Double_t sigmaN, Int_t n, |
| fb3430ac |
840 | const Double_t* a) |
| 7f759bb7 |
841 | { |
| 7984e5f7 |
842 | // |
| 843 | // Evaluate |
| 844 | // @f[ |
| 845 | // f_N(x;\Delta,\xi,\sigma') = \sum_{i=1}^N a_i f_i(x;\Delta,\xi,\sigma'a) |
| 846 | // @f] |
| 847 | // |
| 848 | // where @f$ f(x;\Delta,\xi,\sigma')@f$ is the convolution of a |
| 849 | // Landau with a Gaussian (see LandauGaus). Note that |
| 850 | // @f$ a_1 = 1@f$, @f$\Delta_i = i(\Delta_1 + \xi\log(i))@f$, |
| 851 | // @f$\xi_i=i\xi_1@f$, and @f$\sigma_i'^2 = \sigma_n^2 + i\sigma_1^2@f$. |
| 852 | // |
| 853 | // References: |
| 854 | // - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> |
| 855 | // - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> |
| 856 | // - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> |
| 857 | // |
| 858 | // Parameters: |
| 859 | // x Where to evaluate @f$ f_N@f$ |
| 860 | // delta @f$ \Delta_1@f$ |
| 861 | // xi @f$ \xi_1@f$ |
| 862 | // sigma @f$ \sigma_1@f$ |
| 863 | // sigma_n @f$ \sigma_n@f$ |
| 864 | // n @f$ N@f$ in the sum above. |
| 865 | // a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for |
| 866 | // @f$ i > 1@f$ |
| 867 | // |
| 868 | // Return: |
| 869 | // @f$ f_N(x;\Delta,\xi,\sigma')@f$ |
| 870 | // |
| 1174780f |
871 | Double_t result = ILandauGaus(x, delta, xi, sigma, sigmaN, 1); |
| 0bd4b00f |
872 | for (Int_t i = 2; i <= n; i++) |
| 1174780f |
873 | result += a[i-2] * AliForwardUtil::ILandauGaus(x,delta,xi,sigma,sigmaN,i); |
| 7f759bb7 |
874 | return result; |
| 875 | } |
| 0bd4b00f |
876 | namespace { |
| 877 | const Int_t kColors[] = { kRed+1, |
| 878 | kPink+3, |
| 879 | kMagenta+2, |
| 880 | kViolet+2, |
| 881 | kBlue+1, |
| 882 | kAzure+3, |
| 883 | kCyan+1, |
| 884 | kTeal+2, |
| 885 | kGreen+2, |
| 886 | kSpring+3, |
| 887 | kYellow+2, |
| 888 | kOrange+2 }; |
| 889 | } |
| 890 | |
| 891 | //____________________________________________________________________ |
| 892 | TF1* |
| 893 | AliForwardUtil::MakeNLandauGaus(Double_t c, |
| 894 | Double_t delta, Double_t xi, |
| 1174780f |
895 | Double_t sigma, Double_t sigmaN, Int_t n, |
| fb3430ac |
896 | const Double_t* a, |
| 0bd4b00f |
897 | Double_t xmin, Double_t xmax) |
| 898 | { |
| 7984e5f7 |
899 | // |
| 900 | // Generate a TF1 object of @f$ f_N@f$ |
| 901 | // |
| 902 | // Parameters: |
| 903 | // c Constant |
| 904 | // delta @f$ \Delta@f$ |
| 905 | // xi @f$ \xi_1@f$ |
| 906 | // sigma @f$ \sigma_1@f$ |
| 907 | // sigma_n @f$ \sigma_n@f$ |
| 908 | // n @f$ N@f$ - how many particles to sum to |
| 909 | // a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for |
| 910 | // @f$ i > 1@f$ |
| 911 | // xmin Least value of range |
| 912 | // xmax Largest value of range |
| 913 | // |
| 914 | // Return: |
| 915 | // Newly allocated TF1 object |
| 916 | // |
| 0bd4b00f |
917 | Int_t npar = AliForwardUtil::ELossFitter::kN+n; |
| 918 | TF1* landaun = new TF1(Form("nlandau%d", n), &landauGausN,xmin,xmax,npar); |
| 919 | // landaun->SetLineStyle(((n-2) % 10)+2); // start at dashed |
| 920 | landaun->SetLineColor(kColors[((n-1) % 12)]); // start at red |
| 921 | landaun->SetLineWidth(2); |
| 922 | landaun->SetNpx(500); |
| 923 | landaun->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}", "N"); |
| 924 | |
| 925 | // Set the initial parameters from the seed fit |
| 926 | landaun->SetParameter(AliForwardUtil::ELossFitter::kC, c); |
| 927 | landaun->SetParameter(AliForwardUtil::ELossFitter::kDelta, delta); |
| 928 | landaun->SetParameter(AliForwardUtil::ELossFitter::kXi, xi); |
| 929 | landaun->SetParameter(AliForwardUtil::ELossFitter::kSigma, sigma); |
| 1174780f |
930 | landaun->SetParameter(AliForwardUtil::ELossFitter::kSigmaN, sigmaN); |
| 0bd4b00f |
931 | landaun->FixParameter(AliForwardUtil::ELossFitter::kN, n); |
| 932 | |
| 933 | // Set the range and name of the scale parameters |
| 934 | for (UShort_t i = 2; i <= n; i++) {// Take parameters from last fit |
| 935 | landaun->SetParameter(AliForwardUtil::ELossFitter::kA+i-2, a[i-2]); |
| 936 | landaun->SetParName(AliForwardUtil::ELossFitter::kA+i-2, Form("a_{%d}", i)); |
| 937 | } |
| 938 | return landaun; |
| 939 | } |
| 940 | //____________________________________________________________________ |
| 941 | TF1* |
| 942 | AliForwardUtil::MakeILandauGaus(Double_t c, |
| 943 | Double_t delta, Double_t xi, |
| 1174780f |
944 | Double_t sigma, Double_t sigmaN, Int_t i, |
| 0bd4b00f |
945 | Double_t xmin, Double_t xmax) |
| 946 | { |
| 7984e5f7 |
947 | // |
| 948 | // Generate a TF1 object of @f$ f_I@f$ |
| 949 | // |
| 950 | // Parameters: |
| 951 | // c Constant |
| 952 | // delta @f$ \Delta@f$ |
| 953 | // xi @f$ \xi_1@f$ |
| 954 | // sigma @f$ \sigma_1@f$ |
| 955 | // sigma_n @f$ \sigma_n@f$ |
| 956 | // i @f$ i@f$ - the number of particles |
| 957 | // xmin Least value of range |
| 958 | // xmax Largest value of range |
| 959 | // |
| 960 | // Return: |
| 961 | // Newly allocated TF1 object |
| 962 | // |
| 0bd4b00f |
963 | Int_t npar = AliForwardUtil::ELossFitter::kN+1; |
| 964 | TF1* landaui = new TF1(Form("ilandau%d", i), &landauGausI,xmin,xmax,npar); |
| 965 | // landaui->SetLineStyle(((i-2) % 10)+2); // start at dashed |
| 966 | landaui->SetLineColor(kColors[((i-1) % 12)]); // start at red |
| 967 | landaui->SetLineWidth(1); |
| 968 | landaui->SetNpx(500); |
| 969 | landaui->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}", "i"); |
| 970 | |
| 971 | // Set the initial parameters from the seed fit |
| 972 | landaui->SetParameter(AliForwardUtil::ELossFitter::kC, c); |
| 973 | landaui->SetParameter(AliForwardUtil::ELossFitter::kDelta, delta); |
| 974 | landaui->SetParameter(AliForwardUtil::ELossFitter::kXi, xi); |
| 975 | landaui->SetParameter(AliForwardUtil::ELossFitter::kSigma, sigma); |
| 1174780f |
976 | landaui->SetParameter(AliForwardUtil::ELossFitter::kSigmaN, sigmaN); |
| 0bd4b00f |
977 | landaui->FixParameter(AliForwardUtil::ELossFitter::kN, i); |
| 978 | |
| 979 | return landaui; |
| 980 | } |
| 7f759bb7 |
981 | |
| 982 | //==================================================================== |
| 983 | AliForwardUtil::ELossFitter::ELossFitter(Double_t lowCut, |
| 984 | Double_t maxRange, |
| 985 | UShort_t minusBins) |
| 986 | : fLowCut(lowCut), fMaxRange(maxRange), fMinusBins(minusBins), |
| 81775aba |
987 | fFitResults(0), fFunctions(0), fDebug(false) |
| 7f759bb7 |
988 | { |
| 7984e5f7 |
989 | // |
| 990 | // Constructor |
| 991 | // |
| 992 | // Parameters: |
| 993 | // lowCut Lower cut of spectrum - data below this cuts is ignored |
| 994 | // maxRange Maximum range to fit to |
| 995 | // minusBins The number of bins below maximum to use |
| 996 | // |
| 7f759bb7 |
997 | fFitResults.SetOwner(); |
| 998 | fFunctions.SetOwner(); |
| 999 | } |
| 1000 | //____________________________________________________________________ |
| 1001 | AliForwardUtil::ELossFitter::~ELossFitter() |
| 1002 | { |
| 7984e5f7 |
1003 | // |
| 1004 | // Destructor |
| 1005 | // |
| 1006 | // |
| 7f759bb7 |
1007 | fFitResults.Delete(); |
| 1008 | fFunctions.Delete(); |
| 1009 | } |
| 1010 | //____________________________________________________________________ |
| 1011 | void |
| 1012 | AliForwardUtil::ELossFitter::Clear() |
| 1013 | { |
| 7984e5f7 |
1014 | // |
| 1015 | // Clear internal arrays |
| 1016 | // |
| 1017 | // |
| 7f759bb7 |
1018 | fFitResults.Clear(); |
| 1019 | fFunctions.Clear(); |
| 1020 | } |
| 1021 | //____________________________________________________________________ |
| 1022 | TF1* |
| 1023 | AliForwardUtil::ELossFitter::Fit1Particle(TH1* dist, Double_t sigman) |
| 1024 | { |
| 7984e5f7 |
1025 | // |
| 1026 | // Fit a 1-particle signal to the passed energy loss distribution |
| 1027 | // |
| 1028 | // Note that this function clears the internal arrays first |
| 1029 | // |
| 1030 | // Parameters: |
| 1031 | // dist Data to fit the function to |
| 1032 | // sigman If larger than zero, the initial guess of the |
| 1033 | // detector induced noise. If zero or less, then this |
| 1034 | // parameter is ignored in the fit (fixed at 0) |
| 1035 | // |
| 1036 | // Return: |
| 1037 | // The function fitted to the data |
| 1038 | // |
| 1039 | |
| 7f759bb7 |
1040 | // Clear the cache |
| 1041 | Clear(); |
| 1042 | |
| 1043 | // Find the fit range |
| 8449e3e0 |
1044 | // Find the fit range |
| 1045 | Int_t cutBin = TMath::Max(dist->GetXaxis()->FindBin(fLowCut),3); |
| 1046 | Int_t maxBin = TMath::Min(dist->GetXaxis()->FindBin(fMaxRange), |
| 1047 | dist->GetNbinsX()); |
| 1048 | dist->GetXaxis()->SetRange(cutBin, maxBin); |
| 1049 | // dist->GetXaxis()->SetRangeUser(fLowCut, fMaxRange); |
| 7f759bb7 |
1050 | |
| 7f759bb7 |
1051 | // Get the bin with maximum |
| 2e658fb9 |
1052 | Int_t peakBin = dist->GetMaximumBin(); |
| 1053 | Double_t peakE = dist->GetBinLowEdge(peakBin); |
| 7f759bb7 |
1054 | |
| 1055 | // Get the low edge |
| 8449e3e0 |
1056 | // dist->GetXaxis()->SetRangeUser(fLowCut, peakE); |
| 2e658fb9 |
1057 | Int_t minBin = peakBin - fMinusBins; // dist->GetMinimumBin(); |
| 7f759bb7 |
1058 | Double_t minE = TMath::Max(dist->GetBinCenter(minBin),fLowCut); |
| 2e658fb9 |
1059 | Double_t maxE = dist->GetBinCenter(peakBin+2*fMinusBins); |
| 7f759bb7 |
1060 | |
| 2e658fb9 |
1061 | Int_t minEb = dist->GetXaxis()->FindBin(minE); |
| 1062 | Int_t maxEb = dist->GetXaxis()->FindBin(maxE); |
| 1063 | Double_t intg = dist->Integral(minEb, maxEb); |
| 1064 | if (intg <= 0) { |
| 1065 | ::Warning("Fit1Particle", |
| 1066 | "Integral of %s between [%f,%f] [%03d,%03d] = %f < 0", |
| 1067 | dist->GetName(), minE, maxE, minEb, maxEb, intg); |
| 1068 | return 0; |
| 1069 | } |
| 1070 | |
| 7f759bb7 |
1071 | // Restore the range |
| 8449e3e0 |
1072 | dist->GetXaxis()->SetRange(1, maxBin); |
| 7f759bb7 |
1073 | |
| 1074 | // Define the function to fit |
| 2e658fb9 |
1075 | TF1* landau1 = new TF1("landau1", landauGaus1, minE,maxE,kSigmaN+1); |
| 7f759bb7 |
1076 | |
| 1077 | // Set initial guesses, parameter names, and limits |
| 2e658fb9 |
1078 | landau1->SetParameters(1,peakE,peakE/10,peakE/5,sigman); |
| 7f759bb7 |
1079 | landau1->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}"); |
| c389303e |
1080 | landau1->SetNpx(500); |
| 81775aba |
1081 | if (peakE >= minE && peakE <= fMaxRange) { |
| 1082 | // printf("Fit1: Set par limits on Delta: %f, %f\n", minE, fMaxRange); |
| 1083 | landau1->SetParLimits(kDelta, minE, fMaxRange); |
| 1084 | } |
| 1085 | if (peakE/10 >= 0 && peakE <= 0.1) { |
| 1086 | // printf("Fit1: Set par limits on xi: %f, %f\n", 0., 0.1); |
| 1087 | landau1->SetParLimits(kXi, 0.00, 0.1); // Was fMaxRange - too wide |
| 1088 | } |
| 1089 | if (peakE/5 >= 0 && peakE/5 <= 0.1) { |
| 1090 | // printf("Fit1: Set par limits on sigma: %f, %f\n", 0., 0.1); |
| 1091 | landau1->SetParLimits(kSigma, 1e-5, 0.1); // Was fMaxRange - too wide |
| 1092 | } |
| c389303e |
1093 | if (sigman <= 0) landau1->FixParameter(kSigmaN, 0); |
| 81775aba |
1094 | else { |
| 1095 | // printf("Fit1: Set par limits on sigmaN: %f, %f\n", 0., fMaxRange); |
| 1096 | landau1->SetParLimits(kSigmaN, 0, fMaxRange); |
| 1097 | } |
| 7f759bb7 |
1098 | |
| 1099 | // Do the fit, getting the result object |
| 81775aba |
1100 | if (fDebug) |
| 1101 | ::Info("Fit1Particle", "Fitting in the range %f,%f", minE, maxE); |
| e65b8b56 |
1102 | TFitResultPtr r = dist->Fit(landau1, FIT_OPTIONS, "", minE, maxE); |
| 2e658fb9 |
1103 | // landau1->SetRange(minE, fMaxRange); |
| 7f759bb7 |
1104 | fFitResults.AddAtAndExpand(new TFitResult(*r), 0); |
| 1105 | fFunctions.AddAtAndExpand(landau1, 0); |
| 1106 | |
| 1107 | return landau1; |
| 1108 | } |
| 1109 | //____________________________________________________________________ |
| 1110 | TF1* |
| 1111 | AliForwardUtil::ELossFitter::FitNParticle(TH1* dist, UShort_t n, |
| 1112 | Double_t sigman) |
| 1113 | { |
| 7984e5f7 |
1114 | // |
| 1115 | // Fit a N-particle signal to the passed energy loss distribution |
| 1116 | // |
| 1117 | // If there's no 1-particle fit present, it does that first |
| 1118 | // |
| 1119 | // Parameters: |
| 1120 | // dist Data to fit the function to |
| 1121 | // n Number of particle signals to fit |
| 1122 | // sigman If larger than zero, the initial guess of the |
| 1123 | // detector induced noise. If zero or less, then this |
| 1124 | // parameter is ignored in the fit (fixed at 0) |
| 1125 | // |
| 1126 | // Return: |
| 1127 | // The function fitted to the data |
| 1128 | // |
| 1129 | |
| 7f759bb7 |
1130 | // Get the seed fit result |
| 1131 | TFitResult* r = static_cast<TFitResult*>(fFitResults.At(0)); |
| 1132 | TF1* f = static_cast<TF1*>(fFunctions.At(0)); |
| 1133 | if (!r || !f) { |
| 1134 | f = Fit1Particle(dist, sigman); |
| 1135 | r = static_cast<TFitResult*>(fFitResults.At(0)); |
| 1136 | if (!r || !f) { |
| 1137 | ::Warning("FitNLandau", "No first shot at landau fit"); |
| 1138 | return 0; |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | // Get some parameters from seed fit |
| c389303e |
1143 | Double_t delta1 = r->Parameter(kDelta); |
| 1144 | Double_t xi1 = r->Parameter(kXi); |
| 7f759bb7 |
1145 | Double_t maxEi = n * (delta1 + xi1 * TMath::Log(n)) + 2 * n * xi1; |
| 1146 | Double_t minE = f->GetXmin(); |
| 1147 | |
| 2e658fb9 |
1148 | Int_t minEb = dist->GetXaxis()->FindBin(minE); |
| 1149 | Int_t maxEb = dist->GetXaxis()->FindBin(maxEi); |
| 1150 | Double_t intg = dist->Integral(minEb, maxEb); |
| 1151 | if (intg <= 0) { |
| 1152 | ::Warning("FitNParticle", |
| 1153 | "Integral of %s between [%f,%f] [%03d,%03d] = %f < 0", |
| 1154 | dist->GetName(), minE, maxEi, minEb, maxEb, intg); |
| 1155 | return 0; |
| 1156 | } |
| 1157 | |
| 0bd4b00f |
1158 | // Array of weights |
| 1159 | TArrayD a(n-1); |
| 1160 | for (UShort_t i = 2; i <= n; i++) |
| 1161 | a.fArray[i-2] = (n == 2 ? 0.05 : 0.000001); |
| 7f759bb7 |
1162 | // Make the fit function |
| 2e658fb9 |
1163 | TF1* landaun = MakeNLandauGaus(r->Parameter(kC), |
| 1164 | r->Parameter(kDelta), |
| 1165 | r->Parameter(kXi), |
| 1166 | r->Parameter(kSigma), |
| 1167 | r->Parameter(kSigmaN), |
| 1168 | n, a.fArray, minE, maxEi); |
| 81775aba |
1169 | if (minE <= r->Parameter(kDelta) && |
| 1170 | fMaxRange >= r->Parameter(kDelta)) { |
| 1171 | // Protect against warning from ParameterSettings |
| 1172 | // printf("FitN: Set par limits on Delta: %f, %f\n", minE, fMaxRange); |
| 1173 | landaun->SetParLimits(kDelta, minE, fMaxRange); // Delta |
| 1174 | } |
| 1175 | if (r->Parameter(kXi) >= 0 && r->Parameter(kXi) <= 0.1) { |
| 1176 | // printf("FitN: Set par limits on xi: %f, %f\n", 0., 0.1); |
| 1177 | landaun->SetParLimits(kXi, 0.00, 0.1); // was fMaxRange - too wide |
| 1178 | } |
| 1179 | if (r->Parameter(kSigma) >= 1e-5 && r->Parameter(kSigma) <= 0.1) { |
| 1180 | // printf("FitN: Set par limits on sigma: %f, %f\n", 1e-5, 0.1); |
| 1181 | landaun->SetParLimits(kSigma, 1e-5, 0.1); // was fMaxRange - too wide |
| 1182 | } |
| c389303e |
1183 | // Check if we're using the noise sigma |
| 1184 | if (sigman <= 0) landaun->FixParameter(kSigmaN, 0); |
| 81775aba |
1185 | else { |
| 1186 | // printf("FitN: Set par limits on sigmaN: %f, %f\n", 0., fMaxRange); |
| 1187 | landaun->SetParLimits(kSigmaN, 0, fMaxRange); |
| 1188 | } |
| 7f759bb7 |
1189 | |
| 1190 | // Set the range and name of the scale parameters |
| 1191 | for (UShort_t i = 2; i <= n; i++) {// Take parameters from last fit |
| 81775aba |
1192 | if (a[i-2] >= 0 && a[i-2] <= 1) { |
| 1193 | // printf("FitN: Set par limits on a_%d: %f, %f\n", i, 0., 1.); |
| 1194 | landaun->SetParLimits(kA+i-2, 0,1); |
| 1195 | } |
| 7f759bb7 |
1196 | } |
| 1197 | |
| 1198 | // Do the fit |
| 81775aba |
1199 | if (fDebug) |
| 1200 | ::Info("FitNParticle", "Fitting in the range %f,%f (%d)", minE, maxEi, n); |
| e65b8b56 |
1201 | TFitResultPtr tr = dist->Fit(landaun, FIT_OPTIONS, "", minE, maxEi); |
| 7f759bb7 |
1202 | |
| 2e658fb9 |
1203 | // landaun->SetRange(minE, fMaxRange); |
| 7f759bb7 |
1204 | fFitResults.AddAtAndExpand(new TFitResult(*tr), n-1); |
| 1205 | fFunctions.AddAtAndExpand(landaun, n-1); |
| 1206 | |
| 1207 | return landaun; |
| 1208 | } |
| 2e658fb9 |
1209 | //____________________________________________________________________ |
| 1210 | TF1* |
| 1211 | AliForwardUtil::ELossFitter::FitComposite(TH1* dist, Double_t sigman) |
| 1212 | { |
| 1213 | // |
| 1214 | // Fit a composite particle signal to the passed energy loss |
| 1215 | // distribution |
| 1216 | // |
| 1217 | // Parameters: |
| 1218 | // dist Data to fit the function to |
| 1219 | // sigman If larger than zero, the initial guess of the |
| 1220 | // detector induced noise. If zero or less, then this |
| 1221 | // parameter is ignored in the fit (fixed at 0) |
| 1222 | // |
| 1223 | // Return: |
| 1224 | // The function fitted to the data |
| 1225 | // |
| 1226 | |
| 1227 | // Find the fit range |
| 8449e3e0 |
1228 | Int_t cutBin = TMath::Max(dist->GetXaxis()->FindBin(fLowCut),3); |
| 1229 | Int_t maxBin = TMath::Min(dist->GetXaxis()->FindBin(fMaxRange), |
| 1230 | dist->GetNbinsX()); |
| 1231 | dist->GetXaxis()->SetRange(cutBin, maxBin); |
| 2e658fb9 |
1232 | |
| 1233 | // Get the bin with maximum |
| 1234 | Int_t peakBin = dist->GetMaximumBin(); |
| 1235 | Double_t peakE = dist->GetBinLowEdge(peakBin); |
| 1236 | |
| 1237 | // Get the low edge |
| 8449e3e0 |
1238 | // dist->GetXaxis()->SetRangeUser(fLowCut, peakE); |
| 2e658fb9 |
1239 | Int_t minBin = peakBin - fMinusBins; // dist->GetMinimumBin(); |
| 1240 | Double_t minE = TMath::Max(dist->GetBinCenter(minBin),fLowCut); |
| 1241 | Double_t maxE = dist->GetBinCenter(peakBin+2*fMinusBins); |
| 1242 | |
| 1243 | // Get the range in bins and the integral of that range |
| 1244 | Int_t minEb = dist->GetXaxis()->FindBin(minE); |
| 1245 | Int_t maxEb = dist->GetXaxis()->FindBin(maxE); |
| 1246 | Double_t intg = dist->Integral(minEb, maxEb); |
| 1247 | if (intg <= 0) { |
| 1248 | ::Warning("Fit1Particle", |
| 1249 | "Integral of %s between [%f,%f] [%03d,%03d] = %f < 0", |
| 1250 | dist->GetName(), minE, maxE, minEb, maxEb, intg); |
| 1251 | return 0; |
| 1252 | } |
| 1253 | |
| 1254 | // Restore the range |
| 8449e3e0 |
1255 | dist->GetXaxis()->SetRange(1, maxBin); |
| 2e658fb9 |
1256 | |
| 1257 | // Define the function to fit |
| 1258 | TF1* seed = new TF1("landauSeed", landauGaus1, minE,maxE,kSigmaN+1); |
| 1259 | |
| 1260 | // Set initial guesses, parameter names, and limits |
| 1261 | seed->SetParameters(1,peakE,peakE/10,peakE/5,sigman); |
| 1262 | seed->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}"); |
| 1263 | seed->SetNpx(500); |
| 1264 | seed->SetParLimits(kDelta, minE, fMaxRange); |
| 8449e3e0 |
1265 | seed->SetParLimits(kXi, 0.00, 0.1); // Was fMaxRange - too wide |
| 1266 | seed->SetParLimits(kSigma, 1e-5, 0.1); // Was fMaxRange - too wide |
| 2e658fb9 |
1267 | if (sigman <= 0) seed->FixParameter(kSigmaN, 0); |
| 1268 | else seed->SetParLimits(kSigmaN, 0, fMaxRange); |
| 1269 | |
| 1270 | // Do the fit, getting the result object |
| 81775aba |
1271 | if (fDebug) |
| 1272 | ::Info("FitComposite", "Fitting seed in the range %f,%f", minE, maxE); |
| e65b8b56 |
1273 | /* TFitResultPtr r = */ dist->Fit(seed, FIT_OPTIONS, "", minE, maxE); |
| 2e658fb9 |
1274 | |
| 1275 | maxE = dist->GetXaxis()->GetXmax(); |
| 1276 | TF1* comp = new TF1("composite", landauGausComposite, |
| 1277 | minE, maxE, kSigma+1+4); |
| 1278 | comp->SetParNames("C", "#Delta_{p}", "#xi", "#sigma", |
| 1279 | "C#prime", "#Delta_{p}#prime", "#xi#prime", "#sigma#prim"); |
| 1280 | comp->SetParameters(0.8 * seed->GetParameter(kC), // 0 Primary weight |
| 1281 | seed->GetParameter(kDelta), // 1 Primary Delta |
| 1282 | seed->GetParameter(kDelta)/10, // 2 primary Xi |
| 1283 | seed->GetParameter(kDelta)/5, // 3 primary sigma |
| 1284 | 1.20 * seed->GetParameter(kC), // 5 Secondary weight |
| 1285 | seed->GetParameter(kDelta), // 6 secondary Delta |
| 1286 | seed->GetParameter(kXi), // 7 secondary Xi |
| 1287 | seed->GetParameter(kSigma)); // 8 secondary sigma |
| 1288 | |
| 1289 | // comp->SetParLimits(kC, minE, fMaxRange); // C |
| 1290 | comp->SetParLimits(kDelta, minE, fMaxRange); // Delta |
| 1291 | comp->SetParLimits(kXi, 0.00, fMaxRange); // Xi |
| 1292 | comp->SetParLimits(kSigma, 1e-5, fMaxRange); // Sigma |
| 1293 | // comp->SetParLimits(kSigma+1, minE, fMaxRange); // C |
| 1294 | comp->SetParLimits(kSigma+2, minE/10, fMaxRange); // Delta |
| 1295 | comp->SetParLimits(kSigma+3, 0.00, fMaxRange); // Xi |
| 1296 | comp->SetParLimits(kSigma+4, 1e-6, fMaxRange); // Sigma |
| 1297 | comp->SetLineColor(kRed+1); |
| 1298 | comp->SetLineWidth(3); |
| 1299 | |
| 1300 | // Do the fit, getting the result object |
| 81775aba |
1301 | if (fDebug) |
| 1302 | ::Info("FitComposite", "Fitting composite in the range %f,%f", minE, maxE); |
| e65b8b56 |
1303 | /* TFitResultPtr r = */ dist->Fit(comp, FIT_OPTIONS, "", minE, maxE); |
| 2e658fb9 |
1304 | |
| 1305 | #if 0 |
| 1306 | TF1* part1 = static_cast<TF1*>(seed->Clone("part1")); |
| 1307 | part1->SetLineColor(kGreen+1); |
| 1308 | part1->SetLineWidth(4); |
| 1309 | part1->SetRange(minE, maxE); |
| 1310 | part1->SetParameters(comp->GetParameter(0), // C |
| 1311 | comp->GetParameter(1), // Delta |
| 1312 | comp->GetParameter(2), // Xi |
| 1313 | comp->GetParameter(3), // sigma |
| 1314 | 0); |
| 1315 | part1->Save(minE,maxE,0,0,0,0); |
| 1316 | dist->GetListOfFunctions()->Add(part1); |
| 1317 | |
| 1318 | TF1* part2 = static_cast<TF1*>(seed->Clone("part2")); |
| 1319 | part2->SetLineColor(kBlue+1); |
| 1320 | part2->SetLineWidth(4); |
| 1321 | part2->SetRange(minE, maxE); |
| 1322 | part2->SetParameters(comp->GetParameter(4), // C |
| 1323 | comp->GetParameter(5), // Delta |
| 1324 | comp->GetParameter(6), // Xi |
| 1325 | comp->GetParameter(7), // sigma |
| 1326 | 0); |
| 1327 | part2->Save(minE,maxE,0,0,0,0); |
| 1328 | dist->GetListOfFunctions()->Add(part2); |
| 1329 | #endif |
| 1330 | return comp; |
| 1331 | } |
| 7e4038b5 |
1332 | |
| 1333 | //==================================================================== |
| 1334 | AliForwardUtil::Histos::~Histos() |
| 1335 | { |
| 7984e5f7 |
1336 | // |
| 1337 | // Destructor |
| 1338 | // |
| b7ab8a2c |
1339 | } |
| 1340 | |
| 1341 | //____________________________________________________________________ |
| 1342 | void |
| 1343 | AliForwardUtil::Histos::Delete(Option_t* opt) |
| 1344 | { |
| 7e4038b5 |
1345 | if (fFMD1i) delete fFMD1i; |
| 1346 | if (fFMD2i) delete fFMD2i; |
| 1347 | if (fFMD2o) delete fFMD2o; |
| 1348 | if (fFMD3i) delete fFMD3i; |
| 1349 | if (fFMD3o) delete fFMD3o; |
| b7ab8a2c |
1350 | fFMD1i = 0; |
| 1351 | fFMD2i = 0; |
| 1352 | fFMD2o = 0; |
| 1353 | fFMD3i = 0; |
| 1354 | fFMD3o = 0; |
| 1355 | TObject::Delete(opt); |
| 7e4038b5 |
1356 | } |
| 1357 | |
| 1358 | //____________________________________________________________________ |
| 1359 | TH2D* |
| 8449e3e0 |
1360 | AliForwardUtil::Histos::Make(UShort_t d, Char_t r, const TAxis& etaAxis) |
| 7e4038b5 |
1361 | { |
| 7984e5f7 |
1362 | // |
| 1363 | // Make a histogram |
| 1364 | // |
| 1365 | // Parameters: |
| 1366 | // d Detector |
| 1367 | // r Ring |
| 1368 | // etaAxis Eta axis to use |
| 1369 | // |
| 1370 | // Return: |
| 1371 | // Newly allocated histogram |
| 1372 | // |
| 7e4038b5 |
1373 | Int_t ns = (r == 'I' || r == 'i') ? 20 : 40; |
| 8449e3e0 |
1374 | TH2D* hist = 0; |
| 1375 | if (etaAxis.GetXbins() && etaAxis.GetXbins()->GetArray()) |
| 1376 | hist = new TH2D(Form("FMD%d%c_cache", d, r), |
| 1377 | Form("FMD%d%c cache", d, r), |
| 1378 | etaAxis.GetNbins(), etaAxis.GetXbins()->GetArray(), |
| 1379 | ns, 0, TMath::TwoPi()); |
| 1380 | else |
| 1381 | hist = new TH2D(Form("FMD%d%c_cache", d, r), |
| 1382 | Form("FMD%d%c cache", d, r), |
| 1383 | etaAxis.GetNbins(), etaAxis.GetXmin(), |
| 1384 | etaAxis.GetXmax(), ns, 0, TMath::TwoPi()); |
| 7e4038b5 |
1385 | hist->SetXTitle("#eta"); |
| 1386 | hist->SetYTitle("#phi [radians]"); |
| 1387 | hist->SetZTitle("d^{2}N_{ch}/d#etad#phi"); |
| 1388 | hist->Sumw2(); |
| 1389 | hist->SetDirectory(0); |
| 1390 | |
| 1391 | return hist; |
| 1392 | } |
| 8449e3e0 |
1393 | //____________________________________________________________________ |
| 1394 | void |
| 1395 | AliForwardUtil::Histos::RebinEta(TH2D* hist, const TAxis& etaAxis) |
| 1396 | { |
| 1397 | TAxis* xAxis = hist->GetXaxis(); |
| 1398 | if (etaAxis.GetXbins() && etaAxis.GetXbins()->GetArray()) |
| 1399 | xAxis->Set(etaAxis.GetNbins(), etaAxis.GetXbins()->GetArray()); |
| 1400 | else |
| 1401 | xAxis->Set(etaAxis.GetNbins(), etaAxis.GetXmin(), etaAxis.GetXmax()); |
| 1402 | hist->Rebuild(); |
| 1403 | } |
| 1404 | |
| 1405 | |
| 7e4038b5 |
1406 | //____________________________________________________________________ |
| 1407 | void |
| 1408 | AliForwardUtil::Histos::Init(const TAxis& etaAxis) |
| 1409 | { |
| 7984e5f7 |
1410 | // |
| 1411 | // Initialize the object |
| 1412 | // |
| 1413 | // Parameters: |
| 1414 | // etaAxis Eta axis to use |
| 1415 | // |
| 7e4038b5 |
1416 | fFMD1i = Make(1, 'I', etaAxis); |
| 1417 | fFMD2i = Make(2, 'I', etaAxis); |
| 1418 | fFMD2o = Make(2, 'O', etaAxis); |
| 1419 | fFMD3i = Make(3, 'I', etaAxis); |
| 1420 | fFMD3o = Make(3, 'O', etaAxis); |
| 1421 | } |
| 8449e3e0 |
1422 | //____________________________________________________________________ |
| 1423 | void |
| 1424 | AliForwardUtil::Histos::ReInit(const TAxis& etaAxis) |
| 1425 | { |
| 1426 | // |
| 1427 | // Initialize the object |
| 1428 | // |
| 1429 | // Parameters: |
| 1430 | // etaAxis Eta axis to use |
| 1431 | // |
| 1432 | RebinEta(fFMD1i, etaAxis); |
| 1433 | RebinEta(fFMD2i, etaAxis); |
| 1434 | RebinEta(fFMD2o, etaAxis); |
| 1435 | RebinEta(fFMD3i, etaAxis); |
| 1436 | RebinEta(fFMD3o, etaAxis); |
| 1437 | } |
| 1438 | |
| 7e4038b5 |
1439 | //____________________________________________________________________ |
| 1440 | void |
| 1441 | AliForwardUtil::Histos::Clear(Option_t* option) |
| 1442 | { |
| 7984e5f7 |
1443 | // |
| 1444 | // Clear data |
| 1445 | // |
| 1446 | // Parameters: |
| 1447 | // option Not used |
| 1448 | // |
| 422a78c8 |
1449 | if (fFMD1i) fFMD1i->Reset(option); |
| 1450 | if (fFMD2i) fFMD2i->Reset(option); |
| 1451 | if (fFMD2o) fFMD2o->Reset(option); |
| 1452 | if (fFMD3i) fFMD3i->Reset(option); |
| 1453 | if (fFMD3o) fFMD3o->Reset(option); |
| 7e4038b5 |
1454 | } |
| 1455 | |
| 1456 | //____________________________________________________________________ |
| 1457 | TH2D* |
| 1458 | AliForwardUtil::Histos::Get(UShort_t d, Char_t r) const |
| 1459 | { |
| 7984e5f7 |
1460 | // |
| 1461 | // Get the histogram for a particular detector,ring |
| 1462 | // |
| 1463 | // Parameters: |
| 1464 | // d Detector |
| 1465 | // r Ring |
| 1466 | // |
| 1467 | // Return: |
| 1468 | // Histogram for detector,ring or nul |
| 1469 | // |
| 7e4038b5 |
1470 | switch (d) { |
| 1471 | case 1: return fFMD1i; |
| 1472 | case 2: return (r == 'I' || r == 'i' ? fFMD2i : fFMD2o); |
| 1473 | case 3: return (r == 'I' || r == 'i' ? fFMD3i : fFMD3o); |
| 1474 | } |
| 1475 | return 0; |
| 1476 | } |
| 9d99b0dd |
1477 | //==================================================================== |
| 1478 | TList* |
| 1479 | AliForwardUtil::RingHistos::DefineOutputList(TList* d) const |
| 1480 | { |
| 7984e5f7 |
1481 | // |
| 1482 | // Define the outout list in @a d |
| 1483 | // |
| 1484 | // Parameters: |
| 1485 | // d Where to put the output list |
| 1486 | // |
| 1487 | // Return: |
| 1488 | // Newly allocated TList object or null |
| 1489 | // |
| 9d99b0dd |
1490 | if (!d) return 0; |
| 1491 | TList* list = new TList; |
| 5bb5d1f6 |
1492 | list->SetOwner(); |
| 9d99b0dd |
1493 | list->SetName(fName.Data()); |
| 1494 | d->Add(list); |
| 1495 | return list; |
| 1496 | } |
| 1497 | //____________________________________________________________________ |
| 1498 | TList* |
| fb3430ac |
1499 | AliForwardUtil::RingHistos::GetOutputList(const TList* d) const |
| 9d99b0dd |
1500 | { |
| 7984e5f7 |
1501 | // |
| 1502 | // Get our output list from the container @a d |
| 1503 | // |
| 1504 | // Parameters: |
| 1505 | // d where to get the output list from |
| 1506 | // |
| 1507 | // Return: |
| 1508 | // The found TList or null |
| 1509 | // |
| 9d99b0dd |
1510 | if (!d) return 0; |
| 1511 | TList* list = static_cast<TList*>(d->FindObject(fName.Data())); |
| 1512 | return list; |
| 1513 | } |
| 1514 | |
| 1515 | //____________________________________________________________________ |
| 1516 | TH1* |
| fb3430ac |
1517 | AliForwardUtil::RingHistos::GetOutputHist(const TList* d, const char* name) const |
| 9d99b0dd |
1518 | { |
| 7984e5f7 |
1519 | // |
| 1520 | // Find a specific histogram in the source list @a d |
| 1521 | // |
| 1522 | // Parameters: |
| 1523 | // d (top)-container |
| 1524 | // name Name of histogram |
| 1525 | // |
| 1526 | // Return: |
| 1527 | // Found histogram or null |
| 1528 | // |
| 9d99b0dd |
1529 | return static_cast<TH1*>(d->FindObject(name)); |
| 1530 | } |
| 1531 | |
| f53fb4f6 |
1532 | //==================================================================== |
| 1533 | AliForwardUtil::DebugGuard::DebugGuard(Int_t lvl, Int_t msgLvl, |
| 1534 | const char* format, ...) |
| 1535 | : fMsg("") |
| 1536 | { |
| 1537 | if (lvl < msgLvl) return; |
| 1538 | va_list ap; |
| 1539 | va_start(ap, format); |
| 81a9a914 |
1540 | Format(fMsg, format, ap); |
| f53fb4f6 |
1541 | va_end(ap); |
| 81a9a914 |
1542 | Output(+1, fMsg); |
| f53fb4f6 |
1543 | } |
| 1544 | //____________________________________________________________________ |
| 1545 | AliForwardUtil::DebugGuard::~DebugGuard() |
| 1546 | { |
| 1547 | if (fMsg.IsNull()) return; |
| 81a9a914 |
1548 | Output(-1, fMsg); |
| 1549 | } |
| 1550 | //____________________________________________________________________ |
| 1551 | void |
| 1552 | AliForwardUtil::DebugGuard::Message(Int_t lvl, Int_t msgLvl, |
| 1553 | const char* format, ...) |
| 1554 | { |
| 1555 | if (lvl < msgLvl) return; |
| 1556 | TString msg; |
| 1557 | va_list ap; |
| 1558 | va_start(ap, format); |
| 1559 | Format(msg, format, ap); |
| 1560 | va_end(ap); |
| 1561 | Output(0, msg); |
| 1562 | } |
| 1563 | |
| 1564 | //____________________________________________________________________ |
| 1565 | void |
| 1566 | AliForwardUtil::DebugGuard::Format(TString& out, const char* format, va_list ap) |
| 1567 | { |
| 1568 | static char buf[512]; |
| 1569 | Int_t n = gROOT->GetDirLevel() + 2; |
| 1570 | for (Int_t i = 0; i < n; i++) buf[i] = ' '; |
| 1571 | vsnprintf(&(buf[n]), 511-n, format, ap); |
| 1572 | buf[511] = '\0'; |
| 1573 | out = buf; |
| f53fb4f6 |
1574 | } |
| 1575 | //____________________________________________________________________ |
| 1576 | void |
| 81a9a914 |
1577 | AliForwardUtil::DebugGuard::Output(int in, TString& msg) |
| f53fb4f6 |
1578 | { |
| 81a9a914 |
1579 | msg[0] = (in > 0 ? '>' : in < 0 ? '<' : '='); |
| 1580 | AliLog::Message(AliLog::kInfo, msg, 0, 0, "PWGLF/forward", 0, 0); |
| 1581 | if (in > 0) gROOT->IncreaseDirLevel(); |
| 1582 | else if (in < 0) gROOT->DecreaseDirLevel(); |
| f53fb4f6 |
1583 | } |
| 1584 | |
| 1585 | |
| 1586 | |
| 7e4038b5 |
1587 | // |
| 1588 | // EOF |
| 1589 | // |
git://git.uio.no / u / mrichter / AliRoot.git / blame