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1 | // | |
2 | // This class calculates the exclusive charged particle density | |
3 | // in each for the 5 FMD rings. | |
4 | // | |
5 | #include "AliFMDCorrector.h" | |
6 | #include <AliESDFMD.h> | |
7 | #include <TAxis.h> | |
8 | #include <TList.h> | |
9 | #include <TMath.h> | |
10 | #include "AliForwardCorrectionManager.h" | |
11 | #include "AliFMDCorrSecondaryMap.h" | |
12 | #include "AliFMDCorrVertexBias.h" | |
13 | #include "AliFMDCorrMergingEfficiency.h" | |
14 | #include "AliFMDCorrAcceptance.h" | |
15 | #include "AliLog.h" | |
16 | #include <TH2D.h> | |
17 | #include <TROOT.h> | |
18 | #include <THStack.h> | |
19 | #include <iostream> | |
20 | #include <iomanip> | |
21 | ||
22 | ClassImp(AliFMDCorrector) | |
23 | #if 0 | |
24 | ; // For Emacs | |
25 | #endif | |
26 | ||
27 | //____________________________________________________________________ | |
28 | AliFMDCorrector::AliFMDCorrector() | |
29 | : TNamed(), | |
30 | fRingHistos(), | |
31 | fUseSecondaryMap(true), | |
32 | fUseVertexBias(false), | |
33 | fUseAcceptance(true), | |
34 | fUseMergingEfficiency(false), | |
35 | fDebug(0) | |
36 | { | |
37 | // Constructor | |
38 | DGUARD(fDebug, 3, "Default CTOR of AliFMDCorrector"); | |
39 | } | |
40 | ||
41 | //____________________________________________________________________ | |
42 | AliFMDCorrector::AliFMDCorrector(const char* title) | |
43 | : TNamed("fmdCorrector", title), | |
44 | fRingHistos(), | |
45 | fUseSecondaryMap(true), | |
46 | fUseVertexBias(false), | |
47 | fUseAcceptance(true), | |
48 | fUseMergingEfficiency(false), | |
49 | fDebug(0) | |
50 | { | |
51 | // Constructor | |
52 | // | |
53 | // Parameters: | |
54 | // title Title | |
55 | DGUARD(fDebug, 3, "Named CTOR of AliFMDCorrector: %s", title); | |
56 | fRingHistos.SetName(GetName()); | |
57 | fRingHistos.Add(new RingHistos(1, 'I')); | |
58 | fRingHistos.Add(new RingHistos(2, 'I')); | |
59 | fRingHistos.Add(new RingHistos(2, 'O')); | |
60 | fRingHistos.Add(new RingHistos(3, 'I')); | |
61 | fRingHistos.Add(new RingHistos(3, 'O')); | |
62 | } | |
63 | ||
64 | //____________________________________________________________________ | |
65 | AliFMDCorrector::AliFMDCorrector(const AliFMDCorrector& o) | |
66 | : TNamed(o), | |
67 | fRingHistos(), | |
68 | fUseSecondaryMap(o.fUseSecondaryMap), | |
69 | fUseVertexBias(o.fUseVertexBias), | |
70 | fUseAcceptance(o.fUseAcceptance), | |
71 | fUseMergingEfficiency(o.fUseMergingEfficiency), | |
72 | fDebug(o.fDebug) | |
73 | { | |
74 | // Copy constructor | |
75 | // | |
76 | // Parameters: | |
77 | // o Object to copy from | |
78 | DGUARD(fDebug, 3, "Copy CTOR of AliFMDCorrector"); | |
79 | TIter next(&o.fRingHistos); | |
80 | TObject* obj = 0; | |
81 | while ((obj = next())) fRingHistos.Add(obj); | |
82 | } | |
83 | ||
84 | //____________________________________________________________________ | |
85 | AliFMDCorrector::~AliFMDCorrector() | |
86 | { | |
87 | // Destructor | |
88 | // | |
89 | // | |
90 | DGUARD(fDebug, 3, "DTOR of AliFMDCorrector"); | |
91 | fRingHistos.Delete(); | |
92 | } | |
93 | ||
94 | //____________________________________________________________________ | |
95 | AliFMDCorrector& | |
96 | AliFMDCorrector::operator=(const AliFMDCorrector& o) | |
97 | { | |
98 | // Assignment operator | |
99 | // | |
100 | // Parameters: | |
101 | // o Object to assign from | |
102 | DGUARD(fDebug, 3, "Assignment of AliFMDCorrector"); | |
103 | if (&o == this) return *this; | |
104 | TNamed::operator=(o); | |
105 | ||
106 | fDebug = o.fDebug; | |
107 | fRingHistos.Delete(); | |
108 | fUseSecondaryMap = o.fUseSecondaryMap; | |
109 | fUseVertexBias = o.fUseVertexBias; | |
110 | fUseAcceptance = o.fUseAcceptance; | |
111 | fUseMergingEfficiency = o.fUseMergingEfficiency; | |
112 | TIter next(&o.fRingHistos); | |
113 | TObject* obj = 0; | |
114 | while ((obj = next())) fRingHistos.Add(obj); | |
115 | ||
116 | return *this; | |
117 | } | |
118 | ||
119 | //____________________________________________________________________ | |
120 | void | |
121 | AliFMDCorrector::SetupForData(const TAxis&) | |
122 | { | |
123 | // | |
124 | // Initialize this object | |
125 | // | |
126 | // Parameters: | |
127 | // etaAxis Eta axis to use | |
128 | // | |
129 | DGUARD(fDebug, 1, "Initialization of AliFMDCorrector"); | |
130 | if (!fUseSecondaryMap) | |
131 | AliWarning("Secondary maps not used - BE CAREFUL"); | |
132 | if (!fUseVertexBias) | |
133 | AliWarning("Vertex bias not used"); | |
134 | if (!fUseAcceptance) | |
135 | AliWarning("Acceptance from dead-channels not used"); | |
136 | } | |
137 | ||
138 | //____________________________________________________________________ | |
139 | AliFMDCorrector::RingHistos* | |
140 | AliFMDCorrector::GetRingHistos(UShort_t d, Char_t r) const | |
141 | { | |
142 | // | |
143 | // Get the ring histogram container | |
144 | // Parameters: | |
145 | // d Detector | |
146 | // r Ring | |
147 | // | |
148 | // Return: | |
149 | // Ring histogram container | |
150 | // | |
151 | Int_t idx = -1; | |
152 | switch (d) { | |
153 | case 1: idx = 0; break; | |
154 | case 2: idx = 1 + (r == 'I' || r == 'i' ? 0 : 1); break; | |
155 | case 3: idx = 3 + (r == 'I' || r == 'i' ? 0 : 1); break; | |
156 | } | |
157 | if (idx < 0 || idx >= fRingHistos.GetEntries()) return 0; | |
158 | ||
159 | return static_cast<RingHistos*>(fRingHistos.At(idx)); | |
160 | } | |
161 | ||
162 | //____________________________________________________________________ | |
163 | void | |
164 | AliFMDCorrector::DivideMap(TH2* num, const TH2* denom, | |
165 | Bool_t alsoUnderOver) const | |
166 | { | |
167 | // | |
168 | // Implement TH1::Divide but | |
169 | // - Assume compatible histograms | |
170 | // - Unless third argument is true, do not divide over/under flow bins | |
171 | // | |
172 | if (!num || !denom) return; | |
173 | ||
174 | Int_t first = (alsoUnderOver ? 0 : 1); | |
175 | Int_t lastX = num->GetNbinsX() + (alsoUnderOver ? 1 : 0); | |
176 | Int_t lastY = num->GetNbinsY() + (alsoUnderOver ? 1 : 0); | |
177 | ||
178 | for (Int_t ix = first; ix <= lastX; ix++) { | |
179 | for (Int_t iy = first; iy <= lastY; iy++) { | |
180 | Int_t bin = num->GetBin(ix,iy); | |
181 | Double_t c0 = num->GetBinContent(bin); | |
182 | Double_t c1 = denom->GetBinContent(bin); | |
183 | if (!c1) { | |
184 | num->SetBinContent(bin,0); | |
185 | num->SetBinError(bin, 0); | |
186 | continue; | |
187 | } | |
188 | Double_t w = c0 / c1; | |
189 | Double_t e0 = num->GetBinError(bin); | |
190 | Double_t e1 = denom->GetBinError(bin); | |
191 | Double_t c12 = c1*c1; | |
192 | Double_t e2 = (e0*e0*c1*c1 + e1*e1*c0*c0)/(c12*c12); | |
193 | ||
194 | num->SetBinContent(bin, w); | |
195 | num->SetBinError(bin, TMath::Sqrt(e2)); | |
196 | } | |
197 | } | |
198 | } | |
199 | //____________________________________________________________________ | |
200 | Bool_t | |
201 | AliFMDCorrector::Correct(AliForwardUtil::Histos& hists, | |
202 | UShort_t vtxbin) | |
203 | { | |
204 | // | |
205 | // Do the calculations | |
206 | // Parameters: | |
207 | // hists Cache of histograms | |
208 | // vtxBin Vertex bin | |
209 | // | |
210 | // Return: | |
211 | // true on successs | |
212 | // | |
213 | DGUARD(fDebug, 1, "Correct histograms of AliFMDCorrector"); | |
214 | AliForwardCorrectionManager& fcm = AliForwardCorrectionManager::Instance(); | |
215 | ||
216 | UShort_t uvb = vtxbin; | |
217 | for (UShort_t d=1; d<=3; d++) { | |
218 | UShort_t nr = (d == 1 ? 1 : 2); | |
219 | for (UShort_t q=0; q<nr; q++) { | |
220 | Char_t r = (q == 0 ? 'I' : 'O'); | |
221 | TH2D* h = hists.Get(d,r); | |
222 | RingHistos* rh = GetRingHistos(d,r); | |
223 | ||
224 | if (fUseSecondaryMap) { | |
225 | TH2D* bg = fcm.GetSecondaryMap()->GetCorrection(d, r, uvb); | |
226 | if (!bg) { | |
227 | AliWarning(Form("No secondary correction for FMDM%d%c " | |
228 | "in vertex bin %d", d, r, uvb)); | |
229 | continue; | |
230 | } | |
231 | // Divide by primary/total ratio | |
232 | DivideMap(h, bg, false); | |
233 | } | |
234 | if (fUseVertexBias) { | |
235 | TH2D* ef = fcm.GetVertexBias()->GetCorrection(r, uvb); | |
236 | if (!ef) { | |
237 | AliWarning(Form("No event %s vertex bias correction in vertex bin %d", | |
238 | (r == 'I' || r == 'i' ? "inner" : "outer"), uvb)); | |
239 | continue; | |
240 | } | |
241 | // Divide by the event selection efficiency | |
242 | DivideMap(h, ef, false); | |
243 | } | |
244 | if (fUseAcceptance) { | |
245 | TH2D* ac = fcm.GetAcceptance()->GetCorrection(d, r, uvb); | |
246 | if (!ac) { | |
247 | AliWarning(Form("No acceptance correction for FMD%d%c in " | |
248 | "vertex bin %d", d, r, uvb)); | |
249 | continue; | |
250 | } | |
251 | // Fill overflow bin with ones | |
252 | for (Int_t i = 1; i <= h->GetNbinsX(); i++) | |
253 | h->SetBinContent(i, h->GetNbinsY()+1, 1); | |
254 | ||
255 | // Divide by the acceptance correction - | |
256 | DivideMap(h, ac, fcm.GetAcceptance()->HasOverflow()); | |
257 | } | |
258 | ||
259 | if (fUseMergingEfficiency) { | |
260 | if (!fcm.GetMergingEfficiency()) { | |
261 | AliWarning("No merging efficiencies"); | |
262 | continue; | |
263 | } | |
264 | TH1D* sf = fcm.GetMergingEfficiency()->GetCorrection(d,r,uvb); | |
265 | if (!fcm.GetMergingEfficiency()->GetCorrection(d,r,uvb)) { | |
266 | AliWarning(Form("No merging efficiency for FMD%d%c at vertex bin %d", | |
267 | d, r, uvb)); | |
268 | continue; | |
269 | } | |
270 | ||
271 | ||
272 | for (Int_t ieta = 1; ieta <= h->GetNbinsX(); ieta++) { | |
273 | Float_t c = sf->GetBinContent(ieta); | |
274 | Float_t ec = sf->GetBinError(ieta); | |
275 | ||
276 | for (Int_t iphi = 1; iphi <= h->GetNbinsY(); iphi++) { | |
277 | if (c == 0) { | |
278 | h->SetBinContent(ieta,iphi,0); | |
279 | h->SetBinError(ieta,iphi,0); | |
280 | continue; | |
281 | } | |
282 | ||
283 | Double_t m = h->GetBinContent(ieta, iphi) / c; | |
284 | Double_t em = h->GetBinError(ieta, iphi); | |
285 | ||
286 | Double_t e = TMath::Sqrt(em * em + (m * ec) * (m * ec)); | |
287 | ||
288 | h->SetBinContent(ieta,iphi,m); | |
289 | h->SetBinError(ieta,iphi,e); | |
290 | } | |
291 | } | |
292 | } | |
293 | ||
294 | rh->fDensity->Add(h); | |
295 | } | |
296 | } | |
297 | ||
298 | return kTRUE; | |
299 | } | |
300 | ||
301 | //____________________________________________________________________ | |
302 | void | |
303 | AliFMDCorrector::Terminate(const TList* dir, TList* output, Int_t nEvents) | |
304 | { | |
305 | // | |
306 | // Scale the histograms to the total number of events | |
307 | // Parameters: | |
308 | // dir Where the output is stored | |
309 | // nEvents Number of events | |
310 | // | |
311 | DGUARD(fDebug, 1, "Scale histograms of AliFMDCorrector"); | |
312 | if (nEvents <= 0) return; | |
313 | TList* d = static_cast<TList*>(dir->FindObject(GetName())); | |
314 | if (!d) return; | |
315 | ||
316 | TList* out = new TList; | |
317 | out->SetName(d->GetName()); | |
318 | out->SetOwner(); | |
319 | ||
320 | TIter next(&fRingHistos); | |
321 | RingHistos* o = 0; | |
322 | THStack* sums = new THStack("sums", "Sums of ring results"); | |
323 | while ((o = static_cast<RingHistos*>(next()))) { | |
324 | o->Terminate(d, nEvents); | |
325 | if (!o->fDensity) { | |
326 | Warning("Terminate", "No density from %s", o->GetName()); | |
327 | continue; | |
328 | } | |
329 | TH1D* sum = o->fDensity->ProjectionX(o->GetName(), 1, | |
330 | o->fDensity->GetNbinsY(),"e"); | |
331 | sum->Scale(1., "width"); | |
332 | sum->SetTitle(o->GetName()); | |
333 | sum->SetDirectory(0); | |
334 | sum->SetYTitle("#sum N_{ch,primary}"); | |
335 | sums->Add(sum); | |
336 | } | |
337 | out->Add(sums); | |
338 | output->Add(out); | |
339 | } | |
340 | //____________________________________________________________________ | |
341 | void | |
342 | AliFMDCorrector::CreateOutputObjects(TList* dir) | |
343 | { | |
344 | // | |
345 | // Output diagnostic histograms to directory | |
346 | // | |
347 | // Parameters: | |
348 | // dir List to write in | |
349 | // | |
350 | DGUARD(fDebug, 1, "Define output of AliFMDCorrector"); | |
351 | TList* d = new TList; | |
352 | d->SetName(GetName()); | |
353 | dir->Add(d); | |
354 | ||
355 | d->Add(AliForwardUtil::MakeParameter("secondary", fUseSecondaryMap)); | |
356 | d->Add(AliForwardUtil::MakeParameter("vertexBias", fUseVertexBias)); | |
357 | d->Add(AliForwardUtil::MakeParameter("acceptance", fUseAcceptance)); | |
358 | d->Add(AliForwardUtil::MakeParameter("merging", fUseMergingEfficiency)); | |
359 | ||
360 | ||
361 | TIter next(&fRingHistos); | |
362 | RingHistos* o = 0; | |
363 | while ((o = static_cast<RingHistos*>(next()))) { | |
364 | o->CreateOutputObjects(d); | |
365 | } | |
366 | } | |
367 | ||
368 | #define PF(N,V,...) \ | |
369 | AliForwardUtil::PrintField(N,V, ## __VA_ARGS__) | |
370 | #define PFB(N,FLAG) \ | |
371 | do { \ | |
372 | AliForwardUtil::PrintName(N); \ | |
373 | std::cout << std::boolalpha << (FLAG) << std::noboolalpha << std::endl; \ | |
374 | } while(false) | |
375 | #define PFV(N,VALUE) \ | |
376 | do { \ | |
377 | AliForwardUtil::PrintName(N); \ | |
378 | std::cout << (VALUE) << std::endl; } while(false) | |
379 | ||
380 | //____________________________________________________________________ | |
381 | void | |
382 | AliFMDCorrector::Print(Option_t* /* option */) const | |
383 | { | |
384 | // | |
385 | // Print information | |
386 | // Parameters: | |
387 | // option Not used | |
388 | // | |
389 | AliForwardUtil::PrintTask(*this); | |
390 | gROOT->IncreaseDirLevel(); | |
391 | PFB("Use secondary maps", fUseSecondaryMap ); | |
392 | PFB("Use vertex bias", fUseVertexBias ); | |
393 | PFB("Use acceptance", fUseAcceptance ); | |
394 | PFB("Use merging efficiency", fUseMergingEfficiency); | |
395 | gROOT->DecreaseDirLevel(); | |
396 | } | |
397 | ||
398 | //==================================================================== | |
399 | AliFMDCorrector::RingHistos::RingHistos() | |
400 | : AliForwardUtil::RingHistos(), | |
401 | fDensity(0) | |
402 | { | |
403 | // Constructor | |
404 | // | |
405 | // | |
406 | } | |
407 | ||
408 | //____________________________________________________________________ | |
409 | AliFMDCorrector::RingHistos::RingHistos(UShort_t d, Char_t r) | |
410 | : AliForwardUtil::RingHistos(d,r), | |
411 | fDensity(0) | |
412 | { | |
413 | // | |
414 | // Constructor | |
415 | // Parameters: | |
416 | // d detector | |
417 | // r ring | |
418 | // | |
419 | fDensity = new TH2D("primaryDensity", | |
420 | "#sum N_{ch,primary}/(#Delta#eta#Delta#phi)", | |
421 | 200, -4, 6, (r == 'I' || r == 'i' ? 20 : 40), | |
422 | 0, 2*TMath::Pi()); | |
423 | fDensity->SetDirectory(0); | |
424 | fDensity->SetMarkerColor(Color()); | |
425 | fDensity->Sumw2(); | |
426 | fDensity->SetXTitle("#eta"); | |
427 | fDensity->SetYTitle("#phi [radians]"); | |
428 | fDensity->SetZTitle("Primary N_{ch} density"); | |
429 | } | |
430 | //____________________________________________________________________ | |
431 | AliFMDCorrector::RingHistos::RingHistos(const RingHistos& o) | |
432 | : AliForwardUtil::RingHistos(o), | |
433 | fDensity(o.fDensity) | |
434 | { | |
435 | // | |
436 | // Copy constructor | |
437 | // Parameters: | |
438 | // o Object to copy from | |
439 | // | |
440 | } | |
441 | ||
442 | //____________________________________________________________________ | |
443 | AliFMDCorrector::RingHistos& | |
444 | AliFMDCorrector::RingHistos::operator=(const RingHistos& o) | |
445 | { | |
446 | // | |
447 | // Assignment operator | |
448 | // Parameters: | |
449 | // o Object to assign from | |
450 | // | |
451 | // Return: | |
452 | // Reference to this | |
453 | // | |
454 | if (&o == this) return *this; | |
455 | AliForwardUtil::RingHistos::operator=(o); | |
456 | ||
457 | if (fDensity) delete fDensity; | |
458 | ||
459 | fDensity = static_cast<TH2D*>(o.fDensity->Clone()); | |
460 | ||
461 | return *this; | |
462 | } | |
463 | //____________________________________________________________________ | |
464 | AliFMDCorrector::RingHistos::~RingHistos() | |
465 | { | |
466 | // | |
467 | // Destructor | |
468 | // | |
469 | // if (fDensity) delete fDensity; | |
470 | } | |
471 | ||
472 | //____________________________________________________________________ | |
473 | void | |
474 | AliFMDCorrector::RingHistos::CreateOutputObjects(TList* dir) | |
475 | { | |
476 | // | |
477 | // Make output | |
478 | // Parameters: | |
479 | // dir Where to put it | |
480 | // | |
481 | TList* d = DefineOutputList(dir); | |
482 | d->Add(fDensity); | |
483 | } | |
484 | ||
485 | //____________________________________________________________________ | |
486 | void | |
487 | AliFMDCorrector::RingHistos::Terminate(TList* dir, Int_t nEvents) | |
488 | { | |
489 | // | |
490 | // Scale the histograms to the total number of events | |
491 | // Parameters: | |
492 | // dir where the output is stored | |
493 | // nEvents Number of events | |
494 | // | |
495 | TList* l = GetOutputList(dir); | |
496 | if (!l) return; | |
497 | ||
498 | TH2D* density = static_cast<TH2D*>(GetOutputHist(l,"primaryDensity")); | |
499 | if (density) density->Scale(1./nEvents); | |
500 | fDensity = density; | |
501 | } | |
502 | ||
503 | //____________________________________________________________________ | |
504 | // | |
505 | // EOF | |
506 | // | |
507 | ||
508 | ||
509 |