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7984e5f7 | 1 | // |
2 | // Utilities used in the forward multiplcity analysis | |
3 | // | |
4 | // | |
7e4038b5 | 5 | #include "AliForwardUtil.h" |
9d99b0dd | 6 | #include <AliAnalysisManager.h> |
7 | #include "AliAODForwardMult.h" | |
8 | #include <AliLog.h> | |
9 | #include <AliInputEventHandler.h> | |
290052e7 | 10 | #include <AliAODInputHandler.h> |
11 | #include <AliAODHandler.h> | |
12 | #include <AliAODEvent.h> | |
9d99b0dd | 13 | #include <AliESDEvent.h> |
290052e7 | 14 | #include <AliAnalysisTaskSE.h> |
9d99b0dd | 15 | #include <AliPhysicsSelection.h> |
16 | #include <AliTriggerAnalysis.h> | |
17 | #include <AliMultiplicity.h> | |
241cca4d | 18 | #include <TParameter.h> |
7e4038b5 | 19 | #include <TH2D.h> |
9d99b0dd | 20 | #include <TH1I.h> |
7f759bb7 | 21 | #include <TF1.h> |
22 | #include <TFitResult.h> | |
7e4038b5 | 23 | #include <TMath.h> |
7f759bb7 | 24 | #include <TError.h> |
f53fb4f6 | 25 | #include <TROOT.h> |
7f759bb7 | 26 | |
0bd4b00f | 27 | //==================================================================== |
28 | UShort_t | |
29 | AliForwardUtil::ParseCollisionSystem(const char* sys) | |
30 | { | |
7984e5f7 | 31 | // |
32 | // Parse a collision system spec given in a string. Known values are | |
33 | // | |
0151a6c6 | 34 | // - "ppb", "p-pb", "pa", "p-a" which returns kPPb |
35 | // - "pp", "p-p" which returns kPP | |
36 | // - "PbPb", "Pb-Pb", "A-A", which returns kPbPb | |
7984e5f7 | 37 | // - Everything else gives kUnknown |
38 | // | |
39 | // Parameters: | |
40 | // sys Collision system spec | |
41 | // | |
42 | // Return: | |
43 | // Collision system id | |
44 | // | |
0bd4b00f | 45 | TString s(sys); |
46 | s.ToLower(); | |
0151a6c6 | 47 | // we do pA first to avoid pp catch on ppb string (AH) |
48 | if (s.Contains("p-pb") || s.Contains("ppb")) return AliForwardUtil::kPPb; | |
49 | if (s.Contains("p-a") || s.Contains("pa")) return AliForwardUtil::kPPb; | |
50 | if (s.Contains("p-p") || s.Contains("pp")) return AliForwardUtil::kPP; | |
51 | if (s.Contains("pb-pb") || s.Contains("pbpb")) return AliForwardUtil::kPbPb; | |
52 | if (s.Contains("a-a") || s.Contains("aa")) return AliForwardUtil::kPbPb; | |
0bd4b00f | 53 | return AliForwardUtil::kUnknown; |
54 | } | |
55 | //____________________________________________________________________ | |
56 | const char* | |
57 | AliForwardUtil::CollisionSystemString(UShort_t sys) | |
58 | { | |
7984e5f7 | 59 | // |
60 | // Get a string representation of the collision system | |
61 | // | |
62 | // Parameters: | |
63 | // sys Collision system | |
64 | // - kPP -> "pp" | |
65 | // - kPbPb -> "PbPb" | |
66 | // - anything else gives "unknown" | |
67 | // | |
68 | // Return: | |
69 | // String representation of the collision system | |
70 | // | |
0bd4b00f | 71 | switch (sys) { |
72 | case AliForwardUtil::kPP: return "pp"; | |
73 | case AliForwardUtil::kPbPb: return "PbPb"; | |
0151a6c6 | 74 | case AliForwardUtil::kPPb: return "pPb"; |
0bd4b00f | 75 | } |
76 | return "unknown"; | |
77 | } | |
78 | //____________________________________________________________________ | |
79 | UShort_t | |
cc83fca2 | 80 | AliForwardUtil::ParseCenterOfMassEnergy(UShort_t /* sys */, Float_t v) |
0bd4b00f | 81 | { |
7984e5f7 | 82 | // |
83 | // Parse the center of mass energy given as a float and return known | |
84 | // values as a unsigned integer | |
85 | // | |
86 | // Parameters: | |
87 | // sys Collision system (needed for AA) | |
88 | // cms Center of mass energy * total charge | |
89 | // | |
90 | // Return: | |
91 | // Center of mass energy per nucleon | |
92 | // | |
0bd4b00f | 93 | Float_t energy = v; |
cc83fca2 | 94 | // Below no longer needed apparently |
95 | // if (sys == AliForwardUtil::kPbPb) energy = energy / 208 * 82; | |
0bd4b00f | 96 | if (TMath::Abs(energy - 900.) < 10) return 900; |
97 | if (TMath::Abs(energy - 2400.) < 10) return 2400; | |
e58000b7 | 98 | if (TMath::Abs(energy - 2750.) < 20) return 2750; |
0151a6c6 | 99 | if (TMath::Abs(energy - 4400.) < 10) return 4400; |
0bd4b00f | 100 | if (TMath::Abs(energy - 5500.) < 40) return 5500; |
101 | if (TMath::Abs(energy - 7000.) < 10) return 7000; | |
4bcdcbc1 | 102 | if (TMath::Abs(energy - 8000.) < 10) return 8000; |
0bd4b00f | 103 | if (TMath::Abs(energy - 10000.) < 10) return 10000; |
104 | if (TMath::Abs(energy - 14000.) < 10) return 14000; | |
105 | return 0; | |
106 | } | |
107 | //____________________________________________________________________ | |
108 | const char* | |
109 | AliForwardUtil::CenterOfMassEnergyString(UShort_t cms) | |
110 | { | |
7984e5f7 | 111 | // |
112 | // Get a string representation of the center of mass energy per nuclean | |
113 | // | |
114 | // Parameters: | |
115 | // cms Center of mass energy per nucleon | |
116 | // | |
117 | // Return: | |
118 | // String representation of the center of mass energy per nuclean | |
119 | // | |
0bd4b00f | 120 | return Form("%04dGeV", cms); |
121 | } | |
122 | //____________________________________________________________________ | |
123 | Short_t | |
124 | AliForwardUtil::ParseMagneticField(Float_t v) | |
125 | { | |
7984e5f7 | 126 | // |
127 | // Parse the magnetic field (in kG) as given by a floating point number | |
128 | // | |
129 | // Parameters: | |
130 | // field Magnetic field in kG | |
131 | // | |
132 | // Return: | |
133 | // Short integer value of magnetic field in kG | |
134 | // | |
0bd4b00f | 135 | if (TMath::Abs(v - 5.) < 1 ) return +5; |
136 | if (TMath::Abs(v + 5.) < 1 ) return -5; | |
137 | if (TMath::Abs(v) < 1) return 0; | |
138 | return 999; | |
139 | } | |
140 | //____________________________________________________________________ | |
141 | const char* | |
142 | AliForwardUtil::MagneticFieldString(Short_t f) | |
143 | { | |
7984e5f7 | 144 | // |
145 | // Get a string representation of the magnetic field | |
146 | // | |
147 | // Parameters: | |
148 | // field Magnetic field in kG | |
149 | // | |
150 | // Return: | |
151 | // String representation of the magnetic field | |
152 | // | |
0bd4b00f | 153 | return Form("%01dkG", f); |
154 | } | |
290052e7 | 155 | //_____________________________________________________________________ |
156 | AliAODEvent* AliForwardUtil::GetAODEvent(AliAnalysisTaskSE* task) | |
157 | { | |
158 | // Check if AOD is the output event | |
576472c1 | 159 | if (!task) ::Fatal("GetAODEvent", "Null task given, cannot do that"); |
160 | ||
290052e7 | 161 | AliAODEvent* ret = task->AODEvent(); |
162 | if (ret) return ret; | |
163 | ||
164 | // Check if AOD is the input event | |
165 | ret = dynamic_cast<AliAODEvent*>(task->InputEvent()); | |
166 | if (!ret) ::Warning("GetAODEvent", "No AOD event found"); | |
167 | ||
168 | return ret; | |
169 | } | |
170 | //_____________________________________________________________________ | |
171 | UShort_t AliForwardUtil::CheckForAOD() | |
172 | { | |
173 | AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager(); | |
174 | if (dynamic_cast<AliAODInputHandler*>(am->GetInputEventHandler())) { | |
175 | ::Info("CheckForAOD", "Found AOD Input handler"); | |
176 | return 1; | |
177 | } | |
178 | if (dynamic_cast<AliAODHandler*>(am->GetOutputEventHandler())) { | |
179 | ::Info("CheckForAOD", "Found AOD Output handler"); | |
180 | return 2; | |
181 | } | |
182 | ||
183 | ::Warning("CheckForAOD", | |
184 | "Neither and input nor output AOD handler is specified"); | |
185 | return 0; | |
186 | } | |
187 | //_____________________________________________________________________ | |
188 | Bool_t AliForwardUtil::CheckForTask(const char* clsOrName, Bool_t cls) | |
189 | { | |
190 | AliAnalysisManager* am = AliAnalysisManager::GetAnalysisManager(); | |
191 | if (!cls) { | |
192 | AliAnalysisTask* t = am->GetTask(clsOrName); | |
193 | if (!t) { | |
194 | ::Warning("CheckForTask", "Task %s not found in manager", clsOrName); | |
195 | return false; | |
196 | } | |
197 | ::Info("CheckForTask", "Found task %s", clsOrName); | |
198 | return true; | |
199 | } | |
200 | TClass* dep = gROOT->GetClass(clsOrName); | |
201 | if (!dep) { | |
202 | ::Warning("CheckForTask", "Unknown class %s for needed task", clsOrName); | |
203 | return false; | |
204 | } | |
205 | TIter next(am->GetTasks()); | |
206 | TObject* o = 0; | |
207 | while ((o = next())) { | |
208 | if (o->IsA()->InheritsFrom(dep)) { | |
209 | ::Info("CheckForTask", "Found task of class %s: %s", | |
210 | clsOrName, o->GetName()); | |
211 | return true; | |
212 | } | |
213 | } | |
214 | ::Warning("CheckForTask", "No task of class %s was found", clsOrName); | |
215 | return false; | |
216 | } | |
217 | ||
241cca4d | 218 | //_____________________________________________________________________ |
219 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, UShort_t value) | |
220 | { | |
221 | TParameter<int>* ret = new TParameter<int>(name, value); | |
222 | ret->SetUniqueID(value); | |
223 | return ret; | |
224 | } | |
225 | //_____________________________________________________________________ | |
226 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, Int_t value) | |
227 | { | |
228 | TParameter<int>* ret = new TParameter<int>(name, value); | |
229 | ret->SetUniqueID(value); | |
230 | return ret; | |
231 | } | |
232 | //_____________________________________________________________________ | |
233 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, Double_t value) | |
234 | { | |
235 | TParameter<double>* ret = new TParameter<double>(name, value); | |
236 | Float_t v = value; | |
237 | ret->SetUniqueID(*reinterpret_cast<UInt_t*>(&v)); | |
238 | return ret; | |
239 | } | |
240 | //_____________________________________________________________________ | |
241 | TObject* AliForwardUtil::MakeParameter(const Char_t* name, Bool_t value) | |
242 | { | |
243 | TParameter<bool>* ret = new TParameter<bool>(name, value); | |
244 | ret->SetUniqueID(value); | |
245 | return ret; | |
246 | } | |
247 | ||
248 | //_____________________________________________________________________ | |
249 | void AliForwardUtil::GetParameter(TObject* o, UShort_t& value) | |
250 | { | |
251 | if (!o) return; | |
252 | value = o->GetUniqueID(); | |
253 | } | |
254 | //_____________________________________________________________________ | |
255 | void AliForwardUtil::GetParameter(TObject* o, Int_t& value) | |
256 | { | |
257 | if (!o) return; | |
258 | value = o->GetUniqueID(); | |
259 | } | |
260 | //_____________________________________________________________________ | |
261 | void AliForwardUtil::GetParameter(TObject* o, Double_t& value) | |
262 | { | |
263 | if (!o) return; | |
264 | UInt_t i = o->GetUniqueID(); | |
265 | Float_t v = *reinterpret_cast<Float_t*>(&i); | |
266 | value = v; | |
267 | } | |
268 | //_____________________________________________________________________ | |
269 | void AliForwardUtil::GetParameter(TObject* o, Bool_t& value) | |
270 | { | |
271 | if (!o) return; | |
272 | value = o->GetUniqueID(); | |
273 | } | |
290052e7 | 274 | |
6f4a5c0d | 275 | //_____________________________________________________________________ |
276 | Double_t AliForwardUtil::GetEtaFromStrip(UShort_t det, Char_t ring, UShort_t sec, UShort_t strip, Double_t zvtx) | |
277 | { | |
278 | //Calculate eta from strip with vertex (redundant with AliESDFMD::Eta but support displaced vertices) | |
279 | ||
280 | //Get max R of ring | |
281 | Double_t maxR = 0; | |
282 | Double_t minR = 0; | |
283 | Bool_t inner = false; | |
284 | switch (ring) { | |
285 | case 'i': case 'I': maxR = 17.2; minR = 4.5213; inner = true; break; | |
286 | case 'o': case 'O': maxR = 28.0; minR = 15.4; inner = false; break; | |
287 | default: | |
288 | return -99999; | |
289 | } | |
290 | ||
291 | Double_t rad = maxR- minR; | |
292 | Double_t nStrips = (ring == 'I' ? 512 : 256); | |
293 | Double_t segment = rad / nStrips; | |
294 | Double_t r = minR + segment*strip; | |
295 | Int_t hybrid = sec / 2; | |
296 | ||
297 | Double_t z = 0; | |
298 | switch (det) { | |
299 | case 1: z = 320.266; break; | |
300 | case 2: z = (inner ? 83.666 : 74.966); break; | |
301 | case 3: z = (inner ? -63.066 : -74.966); break; | |
302 | default: return -999999; | |
303 | } | |
304 | if ((hybrid % 2) == 0) z -= .5; | |
305 | ||
306 | Double_t theta = TMath::ATan2(r,z-zvtx); | |
307 | Double_t eta = -1*TMath::Log(TMath::Tan(0.5*theta)); | |
308 | ||
309 | return eta; | |
310 | } | |
0bd4b00f | 311 | |
312 | ||
7f759bb7 | 313 | //==================================================================== |
314 | Int_t AliForwardUtil::fgConvolutionSteps = 100; | |
315 | Double_t AliForwardUtil::fgConvolutionNSigma = 5; | |
316 | namespace { | |
7984e5f7 | 317 | // |
318 | // The shift of the most probable value for the ROOT function TMath::Landau | |
319 | // | |
7f759bb7 | 320 | const Double_t mpshift = -0.22278298; |
7984e5f7 | 321 | // |
322 | // Integration normalisation | |
323 | // | |
7f759bb7 | 324 | const Double_t invSq2pi = 1. / TMath::Sqrt(2*TMath::Pi()); |
325 | ||
7984e5f7 | 326 | // |
327 | // Utility function to use in TF1 defintition | |
328 | // | |
7f759bb7 | 329 | Double_t landauGaus1(Double_t* xp, Double_t* pp) |
330 | { | |
331 | Double_t x = xp[0]; | |
c389303e | 332 | Double_t constant = pp[AliForwardUtil::ELossFitter::kC]; |
333 | Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta]; | |
334 | Double_t xi = pp[AliForwardUtil::ELossFitter::kXi]; | |
335 | Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma]; | |
1174780f | 336 | Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN]; |
7f759bb7 | 337 | |
1174780f | 338 | return constant * AliForwardUtil::LandauGaus(x, delta, xi, sigma, sigmaN); |
7f759bb7 | 339 | } |
340 | ||
7984e5f7 | 341 | // |
342 | // Utility function to use in TF1 defintition | |
343 | // | |
7f759bb7 | 344 | Double_t landauGausN(Double_t* xp, Double_t* pp) |
345 | { | |
346 | Double_t x = xp[0]; | |
c389303e | 347 | Double_t constant = pp[AliForwardUtil::ELossFitter::kC]; |
348 | Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta]; | |
349 | Double_t xi = pp[AliForwardUtil::ELossFitter::kXi]; | |
350 | Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma]; | |
1174780f | 351 | Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN]; |
c389303e | 352 | Int_t n = Int_t(pp[AliForwardUtil::ELossFitter::kN]); |
353 | Double_t* a = &(pp[AliForwardUtil::ELossFitter::kA]); | |
7f759bb7 | 354 | |
1174780f | 355 | return constant * AliForwardUtil::NLandauGaus(x, delta, xi, sigma, sigmaN, |
7f759bb7 | 356 | n, a); |
357 | } | |
7984e5f7 | 358 | // |
359 | // Utility function to use in TF1 defintition | |
360 | // | |
0bd4b00f | 361 | Double_t landauGausI(Double_t* xp, Double_t* pp) |
362 | { | |
363 | Double_t x = xp[0]; | |
364 | Double_t constant = pp[AliForwardUtil::ELossFitter::kC]; | |
365 | Double_t delta = pp[AliForwardUtil::ELossFitter::kDelta]; | |
366 | Double_t xi = pp[AliForwardUtil::ELossFitter::kXi]; | |
367 | Double_t sigma = pp[AliForwardUtil::ELossFitter::kSigma]; | |
1174780f | 368 | Double_t sigmaN = pp[AliForwardUtil::ELossFitter::kSigmaN]; |
0bd4b00f | 369 | Int_t i = Int_t(pp[AliForwardUtil::ELossFitter::kN]); |
370 | ||
1174780f | 371 | return constant * AliForwardUtil::ILandauGaus(x,delta,xi,sigma,sigmaN,i); |
0bd4b00f | 372 | } |
7f759bb7 | 373 | |
374 | ||
375 | } | |
376 | //____________________________________________________________________ | |
377 | Double_t | |
378 | AliForwardUtil::Landau(Double_t x, Double_t delta, Double_t xi) | |
379 | { | |
7984e5f7 | 380 | // |
381 | // Calculate the shifted Landau | |
382 | // @f[ | |
383 | // f'_{L}(x;\Delta,\xi) = f_L(x;\Delta+0.22278298\xi) | |
384 | // @f] | |
385 | // | |
386 | // where @f$ f_{L}@f$ is the ROOT implementation of the Landau | |
387 | // distribution (known to have @f$ \Delta_{p}=-0.22278298@f$ for | |
388 | // @f$\Delta=0,\xi=1@f$. | |
389 | // | |
390 | // Parameters: | |
391 | // x Where to evaluate @f$ f'_{L}@f$ | |
392 | // delta Most probable value | |
393 | // xi The 'width' of the distribution | |
394 | // | |
395 | // Return: | |
396 | // @f$ f'_{L}(x;\Delta,\xi) @f$ | |
397 | // | |
7f759bb7 | 398 | return TMath::Landau(x, delta - xi * mpshift, xi); |
399 | } | |
400 | //____________________________________________________________________ | |
401 | Double_t | |
402 | AliForwardUtil::LandauGaus(Double_t x, Double_t delta, Double_t xi, | |
1174780f | 403 | Double_t sigma, Double_t sigmaN) |
7f759bb7 | 404 | { |
7984e5f7 | 405 | // |
406 | // Calculate the value of a Landau convolved with a Gaussian | |
407 | // | |
408 | // @f[ | |
409 | // f(x;\Delta,\xi,\sigma') = \frac{1}{\sigma' \sqrt{2 \pi}} | |
410 | // \int_{-\infty}^{+\infty} d\Delta' f'_{L}(x;\Delta',\xi) | |
411 | // \exp{-\frac{(\Delta-\Delta')^2}{2\sigma'^2}} | |
412 | // @f] | |
413 | // | |
414 | // where @f$ f'_{L}@f$ is the Landau distribution, @f$ \Delta@f$ the | |
415 | // energy loss, @f$ \xi@f$ the width of the Landau, and | |
416 | // @f$ \sigma'^2=\sigma^2-\sigma_n^2 @f$. Here, @f$\sigma@f$ is the | |
417 | // variance of the Gaussian, and @f$\sigma_n@f$ is a parameter modelling | |
418 | // noise in the detector. | |
419 | // | |
420 | // Note that this function uses the constants fgConvolutionSteps and | |
421 | // fgConvolutionNSigma | |
422 | // | |
423 | // References: | |
424 | // - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> | |
425 | // - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> | |
426 | // - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> | |
427 | // | |
428 | // Parameters: | |
429 | // x where to evaluate @f$ f@f$ | |
430 | // delta @f$ \Delta@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ | |
431 | // xi @f$ \xi@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ | |
432 | // sigma @f$ \sigma@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ | |
433 | // sigma_n @f$ \sigma_n@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ | |
434 | // | |
435 | // Return: | |
436 | // @f$ f@f$ evaluated at @f$ x@f$. | |
437 | // | |
7f759bb7 | 438 | Double_t deltap = delta - xi * mpshift; |
1174780f | 439 | Double_t sigma2 = sigmaN*sigmaN + sigma*sigma; |
440 | Double_t sigma1 = sigmaN == 0 ? sigma : TMath::Sqrt(sigma2); | |
7f759bb7 | 441 | Double_t xlow = x - fgConvolutionNSigma * sigma1; |
c389303e | 442 | Double_t xhigh = x + fgConvolutionNSigma * sigma1; |
7f759bb7 | 443 | Double_t step = (xhigh - xlow) / fgConvolutionSteps; |
444 | Double_t sum = 0; | |
445 | ||
446 | for (Int_t i = 0; i <= fgConvolutionSteps/2; i++) { | |
c389303e | 447 | Double_t x1 = xlow + (i - .5) * step; |
448 | Double_t x2 = xhigh - (i - .5) * step; | |
7f759bb7 | 449 | |
450 | sum += TMath::Landau(x1, deltap, xi, kTRUE) * TMath::Gaus(x, x1, sigma1); | |
451 | sum += TMath::Landau(x2, deltap, xi, kTRUE) * TMath::Gaus(x, x2, sigma1); | |
452 | } | |
453 | return step * sum * invSq2pi / sigma1; | |
454 | } | |
455 | ||
0bd4b00f | 456 | //____________________________________________________________________ |
457 | Double_t | |
458 | AliForwardUtil::ILandauGaus(Double_t x, Double_t delta, Double_t xi, | |
1174780f | 459 | Double_t sigma, Double_t sigmaN, Int_t i) |
0bd4b00f | 460 | { |
7984e5f7 | 461 | // |
462 | // Evaluate | |
463 | // @f[ | |
464 | // f_i(x;\Delta,\xi,\sigma') = f(x;\Delta_i,\xi_i,\sigma_i') | |
465 | // @f] | |
466 | // corresponding to @f$ i@f$ particles i.e., with the substitutions | |
467 | // @f{eqnarray*}{ | |
468 | // \Delta \rightarrow \Delta_i &=& i(\Delta + \xi\log(i)) | |
469 | // \xi \rightarrow \xi_i &=& i \xi | |
470 | // \sigma \rightarrow \sigma_i &=& \sqrt{i}\sigma | |
471 | // \sigma'^2 \rightarrow \sigma_i'^2 &=& \sigma_n^2 + \sigma_i^2 | |
472 | // @f} | |
473 | // | |
474 | // Parameters: | |
475 | // x Where to evaluate | |
476 | // delta @f$ \Delta@f$ | |
477 | // xi @f$ \xi@f$ | |
478 | // sigma @f$ \sigma@f$ | |
479 | // sigma_n @f$ \sigma_n@f$ | |
480 | // i @f$ i @f$ | |
481 | // | |
482 | // Return: | |
483 | // @f$ f_i @f$ evaluated | |
484 | // | |
1174780f | 485 | Double_t deltaI = (i == 1 ? delta : i * (delta + xi * TMath::Log(i))); |
486 | Double_t xiI = i * xi; | |
487 | Double_t sigmaI = (i == 1 ? sigma : TMath::Sqrt(Double_t(i))*sigma); | |
488 | if (sigmaI < 1e-10) { | |
0bd4b00f | 489 | // Fall back to landau |
1174780f | 490 | return AliForwardUtil::Landau(x, deltaI, xiI); |
0bd4b00f | 491 | } |
1174780f | 492 | return AliForwardUtil::LandauGaus(x, deltaI, xiI, sigmaI, sigmaN); |
0bd4b00f | 493 | } |
494 | ||
495 | //____________________________________________________________________ | |
496 | Double_t | |
497 | AliForwardUtil::IdLandauGausdPar(Double_t x, | |
498 | UShort_t par, Double_t dPar, | |
499 | Double_t delta, Double_t xi, | |
1174780f | 500 | Double_t sigma, Double_t sigmaN, |
0bd4b00f | 501 | Int_t i) |
502 | { | |
7984e5f7 | 503 | // |
504 | // Numerically evaluate | |
505 | // @f[ | |
506 | // \left.\frac{\partial f_i}{\partial p_i}\right|_{x} | |
507 | // @f] | |
508 | // where @f$ p_i@f$ is the @f$ i^{\mbox{th}}@f$ parameter. The mapping | |
509 | // of the parameters is given by | |
510 | // | |
511 | // - 0: @f$\Delta@f$ | |
512 | // - 1: @f$\xi@f$ | |
513 | // - 2: @f$\sigma@f$ | |
514 | // - 3: @f$\sigma_n@f$ | |
515 | // | |
516 | // This is the partial derivative with respect to the parameter of | |
517 | // the response function corresponding to @f$ i@f$ particles i.e., | |
518 | // with the substitutions | |
519 | // @f[ | |
520 | // \Delta \rightarrow \Delta_i = i(\Delta + \xi\log(i)) | |
521 | // \xi \rightarrow \xi_i = i \xi | |
522 | // \sigma \rightarrow \sigma_i = \sqrt{i}\sigma | |
523 | // \sigma'^2 \rightarrow \sigma_i'^2 = \sigma_n^2 + \sigma_i^2 | |
524 | // @f] | |
525 | // | |
526 | // Parameters: | |
527 | // x Where to evaluate | |
528 | // ipar Parameter number | |
529 | // dp @f$ \epsilon\delta p_i@f$ for some value of @f$\epsilon@f$ | |
530 | // delta @f$ \Delta@f$ | |
531 | // xi @f$ \xi@f$ | |
532 | // sigma @f$ \sigma@f$ | |
533 | // sigma_n @f$ \sigma_n@f$ | |
534 | // i @f$ i@f$ | |
535 | // | |
536 | // Return: | |
537 | // @f$ f_i@f$ evaluated | |
538 | // | |
0bd4b00f | 539 | if (dPar == 0) return 0; |
540 | Double_t dp = dPar; | |
541 | Double_t d2 = dPar / 2; | |
1174780f | 542 | Double_t deltaI = i * (delta + xi * TMath::Log(i)); |
543 | Double_t xiI = i * xi; | |
0bd4b00f | 544 | Double_t si = TMath::Sqrt(Double_t(i)); |
1174780f | 545 | Double_t sigmaI = si*sigma; |
0bd4b00f | 546 | Double_t y1 = 0; |
547 | Double_t y2 = 0; | |
548 | Double_t y3 = 0; | |
549 | Double_t y4 = 0; | |
550 | switch (par) { | |
551 | case 0: | |
1174780f | 552 | y1 = ILandauGaus(x, deltaI+i*dp, xiI, sigmaI, sigmaN, i); |
553 | y2 = ILandauGaus(x, deltaI+i*d2, xiI, sigmaI, sigmaN, i); | |
554 | y3 = ILandauGaus(x, deltaI-i*d2, xiI, sigmaI, sigmaN, i); | |
555 | y4 = ILandauGaus(x, deltaI-i*dp, xiI, sigmaI, sigmaN, i); | |
0bd4b00f | 556 | break; |
557 | case 1: | |
1174780f | 558 | y1 = ILandauGaus(x, deltaI, xiI+i*dp, sigmaI, sigmaN, i); |
559 | y2 = ILandauGaus(x, deltaI, xiI+i*d2, sigmaI, sigmaN, i); | |
560 | y3 = ILandauGaus(x, deltaI, xiI-i*d2, sigmaI, sigmaN, i); | |
561 | y4 = ILandauGaus(x, deltaI, xiI-i*dp, sigmaI, sigmaN, i); | |
0bd4b00f | 562 | break; |
563 | case 2: | |
1174780f | 564 | y1 = ILandauGaus(x, deltaI, xiI, sigmaI+si*dp, sigmaN, i); |
565 | y2 = ILandauGaus(x, deltaI, xiI, sigmaI+si*d2, sigmaN, i); | |
566 | y3 = ILandauGaus(x, deltaI, xiI, sigmaI-si*d2, sigmaN, i); | |
567 | y4 = ILandauGaus(x, deltaI, xiI, sigmaI-si*dp, sigmaN, i); | |
0bd4b00f | 568 | break; |
569 | case 3: | |
1174780f | 570 | y1 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN+dp, i); |
571 | y2 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN+d2, i); | |
572 | y3 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN-d2, i); | |
573 | y4 = ILandauGaus(x, deltaI, xiI, sigmaI, sigmaN-dp, i); | |
0bd4b00f | 574 | break; |
575 | default: | |
576 | return 0; | |
577 | } | |
578 | ||
579 | Double_t d0 = y1 - y4; | |
580 | Double_t d1 = 2 * (y2 - y3); | |
581 | ||
582 | Double_t g = 1/(2*dp) * (4*d1 - d0) / 3; | |
583 | ||
584 | return g; | |
585 | } | |
586 | ||
7f759bb7 | 587 | //____________________________________________________________________ |
588 | Double_t | |
589 | AliForwardUtil::NLandauGaus(Double_t x, Double_t delta, Double_t xi, | |
1174780f | 590 | Double_t sigma, Double_t sigmaN, Int_t n, |
fb3430ac | 591 | const Double_t* a) |
7f759bb7 | 592 | { |
7984e5f7 | 593 | // |
594 | // Evaluate | |
595 | // @f[ | |
596 | // f_N(x;\Delta,\xi,\sigma') = \sum_{i=1}^N a_i f_i(x;\Delta,\xi,\sigma'a) | |
597 | // @f] | |
598 | // | |
599 | // where @f$ f(x;\Delta,\xi,\sigma')@f$ is the convolution of a | |
600 | // Landau with a Gaussian (see LandauGaus). Note that | |
601 | // @f$ a_1 = 1@f$, @f$\Delta_i = i(\Delta_1 + \xi\log(i))@f$, | |
602 | // @f$\xi_i=i\xi_1@f$, and @f$\sigma_i'^2 = \sigma_n^2 + i\sigma_1^2@f$. | |
603 | // | |
604 | // References: | |
605 | // - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> | |
606 | // - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> | |
607 | // - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> | |
608 | // | |
609 | // Parameters: | |
610 | // x Where to evaluate @f$ f_N@f$ | |
611 | // delta @f$ \Delta_1@f$ | |
612 | // xi @f$ \xi_1@f$ | |
613 | // sigma @f$ \sigma_1@f$ | |
614 | // sigma_n @f$ \sigma_n@f$ | |
615 | // n @f$ N@f$ in the sum above. | |
616 | // a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for | |
617 | // @f$ i > 1@f$ | |
618 | // | |
619 | // Return: | |
620 | // @f$ f_N(x;\Delta,\xi,\sigma')@f$ | |
621 | // | |
1174780f | 622 | Double_t result = ILandauGaus(x, delta, xi, sigma, sigmaN, 1); |
0bd4b00f | 623 | for (Int_t i = 2; i <= n; i++) |
1174780f | 624 | result += a[i-2] * AliForwardUtil::ILandauGaus(x,delta,xi,sigma,sigmaN,i); |
7f759bb7 | 625 | return result; |
626 | } | |
0bd4b00f | 627 | namespace { |
628 | const Int_t kColors[] = { kRed+1, | |
629 | kPink+3, | |
630 | kMagenta+2, | |
631 | kViolet+2, | |
632 | kBlue+1, | |
633 | kAzure+3, | |
634 | kCyan+1, | |
635 | kTeal+2, | |
636 | kGreen+2, | |
637 | kSpring+3, | |
638 | kYellow+2, | |
639 | kOrange+2 }; | |
640 | } | |
641 | ||
642 | //____________________________________________________________________ | |
643 | TF1* | |
644 | AliForwardUtil::MakeNLandauGaus(Double_t c, | |
645 | Double_t delta, Double_t xi, | |
1174780f | 646 | Double_t sigma, Double_t sigmaN, Int_t n, |
fb3430ac | 647 | const Double_t* a, |
0bd4b00f | 648 | Double_t xmin, Double_t xmax) |
649 | { | |
7984e5f7 | 650 | // |
651 | // Generate a TF1 object of @f$ f_N@f$ | |
652 | // | |
653 | // Parameters: | |
654 | // c Constant | |
655 | // delta @f$ \Delta@f$ | |
656 | // xi @f$ \xi_1@f$ | |
657 | // sigma @f$ \sigma_1@f$ | |
658 | // sigma_n @f$ \sigma_n@f$ | |
659 | // n @f$ N@f$ - how many particles to sum to | |
660 | // a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for | |
661 | // @f$ i > 1@f$ | |
662 | // xmin Least value of range | |
663 | // xmax Largest value of range | |
664 | // | |
665 | // Return: | |
666 | // Newly allocated TF1 object | |
667 | // | |
0bd4b00f | 668 | Int_t npar = AliForwardUtil::ELossFitter::kN+n; |
669 | TF1* landaun = new TF1(Form("nlandau%d", n), &landauGausN,xmin,xmax,npar); | |
670 | // landaun->SetLineStyle(((n-2) % 10)+2); // start at dashed | |
671 | landaun->SetLineColor(kColors[((n-1) % 12)]); // start at red | |
672 | landaun->SetLineWidth(2); | |
673 | landaun->SetNpx(500); | |
674 | landaun->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}", "N"); | |
675 | ||
676 | // Set the initial parameters from the seed fit | |
677 | landaun->SetParameter(AliForwardUtil::ELossFitter::kC, c); | |
678 | landaun->SetParameter(AliForwardUtil::ELossFitter::kDelta, delta); | |
679 | landaun->SetParameter(AliForwardUtil::ELossFitter::kXi, xi); | |
680 | landaun->SetParameter(AliForwardUtil::ELossFitter::kSigma, sigma); | |
1174780f | 681 | landaun->SetParameter(AliForwardUtil::ELossFitter::kSigmaN, sigmaN); |
0bd4b00f | 682 | landaun->FixParameter(AliForwardUtil::ELossFitter::kN, n); |
683 | ||
684 | // Set the range and name of the scale parameters | |
685 | for (UShort_t i = 2; i <= n; i++) {// Take parameters from last fit | |
686 | landaun->SetParameter(AliForwardUtil::ELossFitter::kA+i-2, a[i-2]); | |
687 | landaun->SetParName(AliForwardUtil::ELossFitter::kA+i-2, Form("a_{%d}", i)); | |
688 | } | |
689 | return landaun; | |
690 | } | |
691 | //____________________________________________________________________ | |
692 | TF1* | |
693 | AliForwardUtil::MakeILandauGaus(Double_t c, | |
694 | Double_t delta, Double_t xi, | |
1174780f | 695 | Double_t sigma, Double_t sigmaN, Int_t i, |
0bd4b00f | 696 | Double_t xmin, Double_t xmax) |
697 | { | |
7984e5f7 | 698 | // |
699 | // Generate a TF1 object of @f$ f_I@f$ | |
700 | // | |
701 | // Parameters: | |
702 | // c Constant | |
703 | // delta @f$ \Delta@f$ | |
704 | // xi @f$ \xi_1@f$ | |
705 | // sigma @f$ \sigma_1@f$ | |
706 | // sigma_n @f$ \sigma_n@f$ | |
707 | // i @f$ i@f$ - the number of particles | |
708 | // xmin Least value of range | |
709 | // xmax Largest value of range | |
710 | // | |
711 | // Return: | |
712 | // Newly allocated TF1 object | |
713 | // | |
0bd4b00f | 714 | Int_t npar = AliForwardUtil::ELossFitter::kN+1; |
715 | TF1* landaui = new TF1(Form("ilandau%d", i), &landauGausI,xmin,xmax,npar); | |
716 | // landaui->SetLineStyle(((i-2) % 10)+2); // start at dashed | |
717 | landaui->SetLineColor(kColors[((i-1) % 12)]); // start at red | |
718 | landaui->SetLineWidth(1); | |
719 | landaui->SetNpx(500); | |
720 | landaui->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}", "i"); | |
721 | ||
722 | // Set the initial parameters from the seed fit | |
723 | landaui->SetParameter(AliForwardUtil::ELossFitter::kC, c); | |
724 | landaui->SetParameter(AliForwardUtil::ELossFitter::kDelta, delta); | |
725 | landaui->SetParameter(AliForwardUtil::ELossFitter::kXi, xi); | |
726 | landaui->SetParameter(AliForwardUtil::ELossFitter::kSigma, sigma); | |
1174780f | 727 | landaui->SetParameter(AliForwardUtil::ELossFitter::kSigmaN, sigmaN); |
0bd4b00f | 728 | landaui->FixParameter(AliForwardUtil::ELossFitter::kN, i); |
729 | ||
730 | return landaui; | |
731 | } | |
7f759bb7 | 732 | |
733 | //==================================================================== | |
734 | AliForwardUtil::ELossFitter::ELossFitter(Double_t lowCut, | |
735 | Double_t maxRange, | |
736 | UShort_t minusBins) | |
737 | : fLowCut(lowCut), fMaxRange(maxRange), fMinusBins(minusBins), | |
738 | fFitResults(0), fFunctions(0) | |
739 | { | |
7984e5f7 | 740 | // |
741 | // Constructor | |
742 | // | |
743 | // Parameters: | |
744 | // lowCut Lower cut of spectrum - data below this cuts is ignored | |
745 | // maxRange Maximum range to fit to | |
746 | // minusBins The number of bins below maximum to use | |
747 | // | |
7f759bb7 | 748 | fFitResults.SetOwner(); |
749 | fFunctions.SetOwner(); | |
750 | } | |
751 | //____________________________________________________________________ | |
752 | AliForwardUtil::ELossFitter::~ELossFitter() | |
753 | { | |
7984e5f7 | 754 | // |
755 | // Destructor | |
756 | // | |
757 | // | |
7f759bb7 | 758 | fFitResults.Delete(); |
759 | fFunctions.Delete(); | |
760 | } | |
761 | //____________________________________________________________________ | |
762 | void | |
763 | AliForwardUtil::ELossFitter::Clear() | |
764 | { | |
7984e5f7 | 765 | // |
766 | // Clear internal arrays | |
767 | // | |
768 | // | |
7f759bb7 | 769 | fFitResults.Clear(); |
770 | fFunctions.Clear(); | |
771 | } | |
772 | //____________________________________________________________________ | |
773 | TF1* | |
774 | AliForwardUtil::ELossFitter::Fit1Particle(TH1* dist, Double_t sigman) | |
775 | { | |
7984e5f7 | 776 | // |
777 | // Fit a 1-particle signal to the passed energy loss distribution | |
778 | // | |
779 | // Note that this function clears the internal arrays first | |
780 | // | |
781 | // Parameters: | |
782 | // dist Data to fit the function to | |
783 | // sigman If larger than zero, the initial guess of the | |
784 | // detector induced noise. If zero or less, then this | |
785 | // parameter is ignored in the fit (fixed at 0) | |
786 | // | |
787 | // Return: | |
788 | // The function fitted to the data | |
789 | // | |
790 | ||
7f759bb7 | 791 | // Clear the cache |
792 | Clear(); | |
793 | ||
794 | // Find the fit range | |
795 | dist->GetXaxis()->SetRangeUser(fLowCut, fMaxRange); | |
796 | ||
7f759bb7 | 797 | // Get the bin with maximum |
798 | Int_t maxBin = dist->GetMaximumBin(); | |
799 | Double_t maxE = dist->GetBinLowEdge(maxBin); | |
800 | ||
801 | // Get the low edge | |
802 | dist->GetXaxis()->SetRangeUser(fLowCut, maxE); | |
803 | Int_t minBin = maxBin - fMinusBins; // dist->GetMinimumBin(); | |
804 | Double_t minE = TMath::Max(dist->GetBinCenter(minBin),fLowCut); | |
805 | Double_t maxEE = dist->GetBinCenter(maxBin+2*fMinusBins); | |
806 | ||
807 | // Restore the range | |
808 | dist->GetXaxis()->SetRangeUser(0, fMaxRange); | |
809 | ||
810 | // Define the function to fit | |
0bd4b00f | 811 | TF1* landau1 = new TF1("landau1", landauGaus1, minE,maxEE,kSigmaN+1); |
7f759bb7 | 812 | |
813 | // Set initial guesses, parameter names, and limits | |
c389303e | 814 | landau1->SetParameters(1,0.5,0.07,0.1,sigman); |
7f759bb7 | 815 | landau1->SetParNames("C","#Delta_{p}","#xi", "#sigma", "#sigma_{n}"); |
c389303e | 816 | landau1->SetNpx(500); |
817 | landau1->SetParLimits(kDelta, minE, fMaxRange); | |
818 | landau1->SetParLimits(kXi, 0.00, fMaxRange); | |
819 | landau1->SetParLimits(kSigma, 0.01, 0.1); | |
820 | if (sigman <= 0) landau1->FixParameter(kSigmaN, 0); | |
821 | else landau1->SetParLimits(kSigmaN, 0, fMaxRange); | |
7f759bb7 | 822 | |
823 | // Do the fit, getting the result object | |
824 | TFitResultPtr r = dist->Fit(landau1, "RNQS", "", minE, maxEE); | |
c389303e | 825 | landau1->SetRange(minE, fMaxRange); |
7f759bb7 | 826 | fFitResults.AddAtAndExpand(new TFitResult(*r), 0); |
827 | fFunctions.AddAtAndExpand(landau1, 0); | |
828 | ||
829 | return landau1; | |
830 | } | |
831 | //____________________________________________________________________ | |
832 | TF1* | |
833 | AliForwardUtil::ELossFitter::FitNParticle(TH1* dist, UShort_t n, | |
834 | Double_t sigman) | |
835 | { | |
7984e5f7 | 836 | // |
837 | // Fit a N-particle signal to the passed energy loss distribution | |
838 | // | |
839 | // If there's no 1-particle fit present, it does that first | |
840 | // | |
841 | // Parameters: | |
842 | // dist Data to fit the function to | |
843 | // n Number of particle signals to fit | |
844 | // sigman If larger than zero, the initial guess of the | |
845 | // detector induced noise. If zero or less, then this | |
846 | // parameter is ignored in the fit (fixed at 0) | |
847 | // | |
848 | // Return: | |
849 | // The function fitted to the data | |
850 | // | |
851 | ||
7f759bb7 | 852 | // Get the seed fit result |
853 | TFitResult* r = static_cast<TFitResult*>(fFitResults.At(0)); | |
854 | TF1* f = static_cast<TF1*>(fFunctions.At(0)); | |
855 | if (!r || !f) { | |
856 | f = Fit1Particle(dist, sigman); | |
857 | r = static_cast<TFitResult*>(fFitResults.At(0)); | |
858 | if (!r || !f) { | |
859 | ::Warning("FitNLandau", "No first shot at landau fit"); | |
860 | return 0; | |
861 | } | |
862 | } | |
863 | ||
864 | // Get some parameters from seed fit | |
c389303e | 865 | Double_t delta1 = r->Parameter(kDelta); |
866 | Double_t xi1 = r->Parameter(kXi); | |
7f759bb7 | 867 | Double_t maxEi = n * (delta1 + xi1 * TMath::Log(n)) + 2 * n * xi1; |
868 | Double_t minE = f->GetXmin(); | |
869 | ||
0bd4b00f | 870 | // Array of weights |
871 | TArrayD a(n-1); | |
872 | for (UShort_t i = 2; i <= n; i++) | |
873 | a.fArray[i-2] = (n == 2 ? 0.05 : 0.000001); | |
7f759bb7 | 874 | // Make the fit function |
0bd4b00f | 875 | TF1* landaun = MakeNLandauGaus(r->Parameter(kC), |
876 | r->Parameter(kDelta), | |
877 | r->Parameter(kXi), | |
878 | r->Parameter(kSigma), | |
879 | r->Parameter(kSigmaN), | |
880 | n,a.fArray,minE,maxEi); | |
c389303e | 881 | landaun->SetParLimits(kDelta, minE, fMaxRange); // Delta |
882 | landaun->SetParLimits(kXi, 0.00, fMaxRange); // xi | |
883 | landaun->SetParLimits(kSigma, 0.01, 1); // sigma | |
884 | // Check if we're using the noise sigma | |
885 | if (sigman <= 0) landaun->FixParameter(kSigmaN, 0); | |
886 | else landaun->SetParLimits(kSigmaN, 0, fMaxRange); | |
7f759bb7 | 887 | |
888 | // Set the range and name of the scale parameters | |
889 | for (UShort_t i = 2; i <= n; i++) {// Take parameters from last fit | |
c389303e | 890 | landaun->SetParLimits(kA+i-2, 0,1); |
7f759bb7 | 891 | } |
892 | ||
893 | // Do the fit | |
894 | TFitResultPtr tr = dist->Fit(landaun, "RSQN", "", minE, maxEi); | |
895 | ||
c389303e | 896 | landaun->SetRange(minE, fMaxRange); |
7f759bb7 | 897 | fFitResults.AddAtAndExpand(new TFitResult(*tr), n-1); |
898 | fFunctions.AddAtAndExpand(landaun, n-1); | |
899 | ||
900 | return landaun; | |
901 | } | |
7e4038b5 | 902 | |
903 | //==================================================================== | |
904 | AliForwardUtil::Histos::~Histos() | |
905 | { | |
7984e5f7 | 906 | // |
907 | // Destructor | |
908 | // | |
7e4038b5 | 909 | if (fFMD1i) delete fFMD1i; |
910 | if (fFMD2i) delete fFMD2i; | |
911 | if (fFMD2o) delete fFMD2o; | |
912 | if (fFMD3i) delete fFMD3i; | |
913 | if (fFMD3o) delete fFMD3o; | |
914 | } | |
915 | ||
916 | //____________________________________________________________________ | |
917 | TH2D* | |
918 | AliForwardUtil::Histos::Make(UShort_t d, Char_t r, | |
919 | const TAxis& etaAxis) const | |
920 | { | |
7984e5f7 | 921 | // |
922 | // Make a histogram | |
923 | // | |
924 | // Parameters: | |
925 | // d Detector | |
926 | // r Ring | |
927 | // etaAxis Eta axis to use | |
928 | // | |
929 | // Return: | |
930 | // Newly allocated histogram | |
931 | // | |
7e4038b5 | 932 | Int_t ns = (r == 'I' || r == 'i') ? 20 : 40; |
933 | TH2D* hist = new TH2D(Form("FMD%d%c_cache", d, r), | |
934 | Form("FMD%d%c cache", d, r), | |
935 | etaAxis.GetNbins(), etaAxis.GetXmin(), | |
936 | etaAxis.GetXmax(), ns, 0, 2*TMath::Pi()); | |
937 | hist->SetXTitle("#eta"); | |
938 | hist->SetYTitle("#phi [radians]"); | |
939 | hist->SetZTitle("d^{2}N_{ch}/d#etad#phi"); | |
940 | hist->Sumw2(); | |
941 | hist->SetDirectory(0); | |
942 | ||
943 | return hist; | |
944 | } | |
945 | //____________________________________________________________________ | |
946 | void | |
947 | AliForwardUtil::Histos::Init(const TAxis& etaAxis) | |
948 | { | |
7984e5f7 | 949 | // |
950 | // Initialize the object | |
951 | // | |
952 | // Parameters: | |
953 | // etaAxis Eta axis to use | |
954 | // | |
7e4038b5 | 955 | fFMD1i = Make(1, 'I', etaAxis); |
956 | fFMD2i = Make(2, 'I', etaAxis); | |
957 | fFMD2o = Make(2, 'O', etaAxis); | |
958 | fFMD3i = Make(3, 'I', etaAxis); | |
959 | fFMD3o = Make(3, 'O', etaAxis); | |
960 | } | |
961 | //____________________________________________________________________ | |
962 | void | |
963 | AliForwardUtil::Histos::Clear(Option_t* option) | |
964 | { | |
7984e5f7 | 965 | // |
966 | // Clear data | |
967 | // | |
968 | // Parameters: | |
969 | // option Not used | |
970 | // | |
422a78c8 | 971 | if (fFMD1i) fFMD1i->Reset(option); |
972 | if (fFMD2i) fFMD2i->Reset(option); | |
973 | if (fFMD2o) fFMD2o->Reset(option); | |
974 | if (fFMD3i) fFMD3i->Reset(option); | |
975 | if (fFMD3o) fFMD3o->Reset(option); | |
7e4038b5 | 976 | } |
977 | ||
978 | //____________________________________________________________________ | |
979 | TH2D* | |
980 | AliForwardUtil::Histos::Get(UShort_t d, Char_t r) const | |
981 | { | |
7984e5f7 | 982 | // |
983 | // Get the histogram for a particular detector,ring | |
984 | // | |
985 | // Parameters: | |
986 | // d Detector | |
987 | // r Ring | |
988 | // | |
989 | // Return: | |
990 | // Histogram for detector,ring or nul | |
991 | // | |
7e4038b5 | 992 | switch (d) { |
993 | case 1: return fFMD1i; | |
994 | case 2: return (r == 'I' || r == 'i' ? fFMD2i : fFMD2o); | |
995 | case 3: return (r == 'I' || r == 'i' ? fFMD3i : fFMD3o); | |
996 | } | |
997 | return 0; | |
998 | } | |
9d99b0dd | 999 | //==================================================================== |
1000 | TList* | |
1001 | AliForwardUtil::RingHistos::DefineOutputList(TList* d) const | |
1002 | { | |
7984e5f7 | 1003 | // |
1004 | // Define the outout list in @a d | |
1005 | // | |
1006 | // Parameters: | |
1007 | // d Where to put the output list | |
1008 | // | |
1009 | // Return: | |
1010 | // Newly allocated TList object or null | |
1011 | // | |
9d99b0dd | 1012 | if (!d) return 0; |
1013 | TList* list = new TList; | |
5bb5d1f6 | 1014 | list->SetOwner(); |
9d99b0dd | 1015 | list->SetName(fName.Data()); |
1016 | d->Add(list); | |
1017 | return list; | |
1018 | } | |
1019 | //____________________________________________________________________ | |
1020 | TList* | |
fb3430ac | 1021 | AliForwardUtil::RingHistos::GetOutputList(const TList* d) const |
9d99b0dd | 1022 | { |
7984e5f7 | 1023 | // |
1024 | // Get our output list from the container @a d | |
1025 | // | |
1026 | // Parameters: | |
1027 | // d where to get the output list from | |
1028 | // | |
1029 | // Return: | |
1030 | // The found TList or null | |
1031 | // | |
9d99b0dd | 1032 | if (!d) return 0; |
1033 | TList* list = static_cast<TList*>(d->FindObject(fName.Data())); | |
1034 | return list; | |
1035 | } | |
1036 | ||
1037 | //____________________________________________________________________ | |
1038 | TH1* | |
fb3430ac | 1039 | AliForwardUtil::RingHistos::GetOutputHist(const TList* d, const char* name) const |
9d99b0dd | 1040 | { |
7984e5f7 | 1041 | // |
1042 | // Find a specific histogram in the source list @a d | |
1043 | // | |
1044 | // Parameters: | |
1045 | // d (top)-container | |
1046 | // name Name of histogram | |
1047 | // | |
1048 | // Return: | |
1049 | // Found histogram or null | |
1050 | // | |
9d99b0dd | 1051 | return static_cast<TH1*>(d->FindObject(name)); |
1052 | } | |
1053 | ||
f53fb4f6 | 1054 | //==================================================================== |
1055 | AliForwardUtil::DebugGuard::DebugGuard(Int_t lvl, Int_t msgLvl, | |
1056 | const char* format, ...) | |
1057 | : fMsg("") | |
1058 | { | |
1059 | if (lvl < msgLvl) return; | |
1060 | va_list ap; | |
1061 | va_start(ap, format); | |
81a9a914 | 1062 | Format(fMsg, format, ap); |
f53fb4f6 | 1063 | va_end(ap); |
81a9a914 | 1064 | Output(+1, fMsg); |
f53fb4f6 | 1065 | } |
1066 | //____________________________________________________________________ | |
1067 | AliForwardUtil::DebugGuard::~DebugGuard() | |
1068 | { | |
1069 | if (fMsg.IsNull()) return; | |
81a9a914 | 1070 | Output(-1, fMsg); |
1071 | } | |
1072 | //____________________________________________________________________ | |
1073 | void | |
1074 | AliForwardUtil::DebugGuard::Message(Int_t lvl, Int_t msgLvl, | |
1075 | const char* format, ...) | |
1076 | { | |
1077 | if (lvl < msgLvl) return; | |
1078 | TString msg; | |
1079 | va_list ap; | |
1080 | va_start(ap, format); | |
1081 | Format(msg, format, ap); | |
1082 | va_end(ap); | |
1083 | Output(0, msg); | |
1084 | } | |
1085 | ||
1086 | //____________________________________________________________________ | |
1087 | void | |
1088 | AliForwardUtil::DebugGuard::Format(TString& out, const char* format, va_list ap) | |
1089 | { | |
1090 | static char buf[512]; | |
1091 | Int_t n = gROOT->GetDirLevel() + 2; | |
1092 | for (Int_t i = 0; i < n; i++) buf[i] = ' '; | |
1093 | vsnprintf(&(buf[n]), 511-n, format, ap); | |
1094 | buf[511] = '\0'; | |
1095 | out = buf; | |
f53fb4f6 | 1096 | } |
1097 | //____________________________________________________________________ | |
1098 | void | |
81a9a914 | 1099 | AliForwardUtil::DebugGuard::Output(int in, TString& msg) |
f53fb4f6 | 1100 | { |
81a9a914 | 1101 | msg[0] = (in > 0 ? '>' : in < 0 ? '<' : '='); |
1102 | AliLog::Message(AliLog::kInfo, msg, 0, 0, "PWGLF/forward", 0, 0); | |
1103 | if (in > 0) gROOT->IncreaseDirLevel(); | |
1104 | else if (in < 0) gROOT->DecreaseDirLevel(); | |
f53fb4f6 | 1105 | } |
1106 | ||
1107 | ||
1108 | ||
7e4038b5 | 1109 | // |
1110 | // EOF | |
1111 | // |