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489dce1b | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* | |
17 | ||
592a0c8f | 18 | This class provides the calibration of the time dependence of the TPC gain due to pressure and temperature changes etc. |
19 | ||
20 | ||
21 | //0. Libraries to load | |
489dce1b | 22 | gSystem->Load("libANALYSIS"); |
23 | gSystem->Load("libSTAT"); | |
24 | gSystem->Load("libTPCcalib"); | |
25 | ||
26 | ||
27 | //1. Do calibration ... | |
28 | // | |
29 | // compare reference | |
30 | ||
31 | // | |
d0b31f57 | 32 | //2. Visualize results |
489dce1b | 33 | // |
34 | TFile fcalib("CalibObjects.root"); | |
35 | TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib"); | |
36 | AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain"); | |
3af3fbc4 | 37 | TGraphErrors * gr = gain->GetGraphGainVsTime(0,1000) |
489dce1b | 38 | |
3af3fbc4 | 39 | // gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6) |
592a0c8f | 40 | TH2D * GainTime = gain->GetHistGainTime()->Projection(0,1) |
41 | GainTime->GetXaxis()->SetTimeDisplay(kTRUE) | |
42 | GainTime->GetXaxis()->SetTimeFormat("#splitline{%d/%m}{%H:%M}") | |
43 | GainTime->Draw("colz") | |
489dce1b | 44 | |
45 | // | |
46 | // MakeSlineFit example | |
47 | // | |
592a0c8f | 48 | AliSplineFit *fit = AliTPCcalibTimeGain::MakeSplineFit(gr) |
49 | ||
489dce1b | 50 | TGraph * grfit = fit.MakeGraph(gr->GetX()[0],gr->GetX()[gr->GetN()-1],50000,0); |
51 | ||
52 | gr->SetMarkerStyle(25); | |
592a0c8f | 53 | gr->Draw("lp"); |
489dce1b | 54 | grfit->SetLineColor(2); |
55 | grfit->Draw("lu"); | |
56 | ||
3af3fbc4 | 57 | // |
58 | // QA - dE/dx resoultion as a function of time | |
59 | //TCa | |
60 | ||
61 | TGraph * grSigma = AliTPCcalibBase::FitSlicesSigma(gain->GetHistGainTime(),0,1,1800,5) | |
62 | ||
63 | TCanvas *c1 = new TCanvas("c1","transparent pad",200,10,700,500); | |
64 | TPad *pad1 = new TPad("pad1","",0,0,1,1); | |
65 | TPad *pad2 = new TPad("pad2","",0,0,1,1); | |
66 | pad2->SetFillStyle(4000); //will be transparent | |
67 | pad1->Draw(); | |
68 | pad1->cd(); | |
69 | ||
70 | GainTime->Draw("colz") | |
71 | gr->Draw("lp") | |
72 | ||
73 | ||
74 | ||
75 | c1->cd(); | |
76 | Double_t ymin = -0.04; | |
77 | Double_t ymax = 0.12; | |
78 | Double_t dy = (ymax-ymin)/0.8; | |
79 | Double_t xmin = GainTime->GetXaxis()->GetXmin() | |
80 | Double_t xmax = GainTime->GetXaxis()->GetXmax() | |
81 | Double_t dx = (xmax-xmin)/0.8; //10 per cent margins left and right | |
82 | pad2->Range(xmin-0.1*dx,ymin-0.1*dy,xmax+0.1*dx,ymax+0.1*dy); | |
83 | pad2->Draw(); | |
84 | pad2->cd(); | |
85 | grSigma->SetLineColor(2); | |
86 | grSigma->SetLineWidth(2); | |
87 | grSigma->Draw("lp") | |
88 | TGaxis *axis = new TGaxis(xmax,ymin,xmax,ymax,ymin,ymax,50510,"+L"); | |
89 | axis->SetLabelColor(kRed); | |
90 | axis->SetTitle("dE/dx resolution #sigma_{dE/dx}"); | |
91 | axis->Draw(); | |
92 | ||
93 | //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// | |
94 | ||
95 | ----> make Attachment study | |
96 | ||
97 | TFile fcalib("CalibObjects40366b.root"); | |
98 | TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib"); | |
99 | AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain"); | |
100 | TGraphErrors * grAttach = gain->GetGraphAttachment(2000,4) | |
101 | ||
102 | TCanvas *c1 = new TCanvas("c1","transparent pad",200,10,700,500); | |
103 | TPad *pad1 = new TPad("pad1","",0,0,1,1); | |
104 | TPad *pad2 = new TPad("pad2","",0,0,1,1); | |
105 | pad2->SetFillStyle(4000); //will be transparent | |
106 | pad1->Draw(); | |
107 | pad1->cd(); | |
108 | ||
109 | gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6) | |
110 | TH2D * GainTime = gain->GetHistGainTime()->Projection(0,1) | |
111 | GainTime->GetXaxis()->SetTimeDisplay(kTRUE) | |
112 | GainTime->GetXaxis()->SetTimeFormat("#splitline{%d/%m}{%H:%M}") | |
113 | GainTime->Draw("colz") | |
114 | //gr->Draw("lp") | |
115 | ||
116 | c1->cd(); | |
117 | Double_t ymin = -0.001; | |
118 | Double_t ymax = 0.001; | |
119 | Double_t dy = (ymax-ymin)/0.8; | |
120 | Double_t xmin = GainTime->GetXaxis()->GetXmin() | |
121 | Double_t xmax = GainTime->GetXaxis()->GetXmax() | |
122 | Double_t dx = (xmax-xmin)/0.8; //10 per cent margins left and right | |
123 | pad2->Range(xmin-0.1*dx,ymin-0.1*dy,xmax+0.1*dx,ymax+0.1*dy); | |
124 | pad2->Draw(); | |
125 | pad2->cd(); | |
126 | grAttach->SetLineColor(2); | |
127 | grAttach->SetLineWidth(2); | |
128 | grAttach->Draw("lp") | |
129 | TGaxis *axis = new TGaxis(xmax,ymin,xmax,ymax,ymin,ymax,50510,"+L"); | |
130 | axis->SetLabelColor(kRed); | |
131 | axis->SetTitle("attachment coefficient b"); | |
132 | axis->Draw(); | |
133 | ||
134 | ||
489dce1b | 135 | */ |
136 | ||
137 | ||
138 | #include "Riostream.h" | |
139 | #include "TChain.h" | |
140 | #include "TTree.h" | |
141 | #include "TH1F.h" | |
142 | #include "TH2F.h" | |
143 | #include "TH3F.h" | |
144 | #include "THnSparse.h" | |
d0b31f57 | 145 | #include "TGraphErrors.h" |
489dce1b | 146 | #include "TList.h" |
147 | #include "TMath.h" | |
148 | #include "TCanvas.h" | |
149 | #include "TFile.h" | |
150 | #include "TF1.h" | |
151 | #include "TVectorD.h" | |
152 | #include "TProfile.h" | |
153 | #include "TGraphErrors.h" | |
154 | #include "TCanvas.h" | |
155 | ||
156 | #include "AliTPCclusterMI.h" | |
157 | #include "AliTPCseed.h" | |
158 | #include "AliESDVertex.h" | |
159 | #include "AliESDEvent.h" | |
160 | #include "AliESDfriend.h" | |
161 | #include "AliESDInputHandler.h" | |
162 | #include "AliAnalysisManager.h" | |
163 | ||
164 | #include "AliTracker.h" | |
165 | #include "AliMagF.h" | |
166 | #include "AliTPCCalROC.h" | |
167 | ||
168 | #include "AliLog.h" | |
169 | ||
170 | #include "AliTPCcalibTimeGain.h" | |
171 | ||
172 | #include "TTreeStream.h" | |
173 | #include "AliTPCTracklet.h" | |
174 | #include "TTimeStamp.h" | |
175 | #include "AliTPCcalibDB.h" | |
176 | #include "AliTPCcalibLaser.h" | |
177 | #include "AliDCSSensorArray.h" | |
178 | #include "AliDCSSensor.h" | |
179 | ||
180 | ClassImp(AliTPCcalibTimeGain) | |
181 | ||
182 | ||
183 | AliTPCcalibTimeGain::AliTPCcalibTimeGain() | |
184 | :AliTPCcalibBase(), | |
185 | fHistGainTime(0), | |
186 | fGainVsTime(0), | |
187 | fHistDeDxTotal(0), | |
188 | fIntegrationTimeDeDx(0), | |
189 | fMIP(0), | |
592a0c8f | 190 | fUseMax(0), |
489dce1b | 191 | fLowerTrunc(0), |
192 | fUpperTrunc(0), | |
193 | fUseShapeNorm(0), | |
194 | fUsePosNorm(0), | |
195 | fUsePadNorm(0), | |
592a0c8f | 196 | fUseCookAnalytical(0), |
d0b31f57 | 197 | fIsCosmic(0), |
198 | fLowMemoryConsumption(0) | |
489dce1b | 199 | { |
200 | AliInfo("Default Constructor"); | |
201 | } | |
202 | ||
203 | ||
204 | AliTPCcalibTimeGain::AliTPCcalibTimeGain(const Text_t *name, const Text_t *title, UInt_t StartTime, UInt_t EndTime, Int_t deltaIntegrationTimeGain) | |
205 | :AliTPCcalibBase(), | |
206 | fHistGainTime(0), | |
207 | fGainVsTime(0), | |
208 | fHistDeDxTotal(0), | |
209 | fIntegrationTimeDeDx(0), | |
210 | fMIP(0), | |
592a0c8f | 211 | fUseMax(0), |
489dce1b | 212 | fLowerTrunc(0), |
213 | fUpperTrunc(0), | |
214 | fUseShapeNorm(0), | |
215 | fUsePosNorm(0), | |
216 | fUsePadNorm(0), | |
592a0c8f | 217 | fUseCookAnalytical(0), |
d0b31f57 | 218 | fIsCosmic(0), |
219 | fLowMemoryConsumption(0) | |
3af3fbc4 | 220 | { |
489dce1b | 221 | |
222 | SetName(name); | |
223 | SetTitle(title); | |
3af3fbc4 | 224 | |
489dce1b | 225 | AliInfo("Non Default Constructor"); |
3af3fbc4 | 226 | |
489dce1b | 227 | fIntegrationTimeDeDx = deltaIntegrationTimeGain; |
3af3fbc4 | 228 | |
489dce1b | 229 | Double_t deltaTime = EndTime - StartTime; |
230 | ||
3af3fbc4 | 231 | |
592a0c8f | 232 | // main histogram for time dependence: dE/dx, time, type (1-muon cosmic,2-pion beam data), meanDriftlength, momenta (only filled if enough space is available), run number |
d0b31f57 | 233 | Int_t timeBins = TMath::Nint(deltaTime/deltaIntegrationTimeGain); |
3af3fbc4 | 234 | Int_t binsGainTime[6] = {150, timeBins, 2, 25, 200, 10000000}; |
592a0c8f | 235 | Double_t xminGainTime[6] = {0.5, StartTime, 0.5, 0, 0.1, -0.5}; |
3af3fbc4 | 236 | Double_t xmaxGainTime[6] = { 8, EndTime, 2.5, 250, 50, 9999999.5}; |
592a0c8f | 237 | fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx,time,type,driftlength,momenta,run number;dEdx",6,binsGainTime,xminGainTime,xmaxGainTime); |
489dce1b | 238 | BinLogX(fHistGainTime, 4); |
239 | // | |
3af3fbc4 | 240 | fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,8); |
489dce1b | 241 | BinLogX(fHistDeDxTotal); |
242 | ||
243 | // default values for dE/dx | |
244 | fMIP = 50.; | |
592a0c8f | 245 | fUseMax = kTRUE; |
489dce1b | 246 | fLowerTrunc = 0.0; |
247 | fUpperTrunc = 0.7; | |
248 | fUseShapeNorm = kTRUE; | |
249 | fUsePosNorm = kFALSE; | |
250 | fUsePadNorm = kFALSE; | |
592a0c8f | 251 | fUseCookAnalytical = kFALSE; |
489dce1b | 252 | // |
253 | fIsCosmic = kTRUE; | |
3af3fbc4 | 254 | fLowMemoryConsumption = kTRUE; |
489dce1b | 255 | // |
256 | ||
3af3fbc4 | 257 | } |
489dce1b | 258 | |
259 | ||
260 | ||
261 | AliTPCcalibTimeGain::~AliTPCcalibTimeGain(){ | |
262 | // | |
263 | // | |
264 | // | |
265 | } | |
266 | ||
267 | ||
268 | void AliTPCcalibTimeGain::Process(AliESDEvent *event) { | |
269 | // | |
270 | // main track loop | |
271 | // | |
272 | if (!event) { | |
273 | Printf("ERROR: ESD not available"); | |
274 | return; | |
d0b31f57 | 275 | } |
276 | ||
277 | if (fIsCosmic) { // this should be removed at some point based on trigger mask !? | |
278 | ProcessCosmicEvent(event); | |
279 | } else { | |
280 | ProcessBeamEvent(event); | |
281 | } | |
282 | ||
489dce1b | 283 | |
489dce1b | 284 | |
d0b31f57 | 285 | |
286 | } | |
287 | ||
288 | ||
289 | void AliTPCcalibTimeGain::ProcessCosmicEvent(AliESDEvent *event) { | |
290 | ||
489dce1b | 291 | AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); |
292 | if (!ESDfriend) { | |
293 | Printf("ERROR: ESDfriend not available"); | |
294 | return; | |
295 | } | |
296 | // | |
297 | UInt_t time = event->GetTimeStamp(); | |
d0b31f57 | 298 | Int_t ntracks = event->GetNumberOfTracks(); |
592a0c8f | 299 | Int_t runNumber = event->GetRunNumber(); |
489dce1b | 300 | // |
301 | // track loop | |
302 | // | |
303 | for (Int_t i=0;i<ntracks;++i) { | |
304 | ||
305 | AliESDtrack *track = event->GetTrack(i); | |
306 | if (!track) continue; | |
307 | ||
308 | const AliExternalTrackParam * trackIn = track->GetInnerParam(); | |
309 | const AliExternalTrackParam * trackOut = track->GetOuterParam(); | |
310 | if (!trackIn) continue; | |
311 | if (!trackOut) continue; | |
312 | ||
313 | // calculate necessary track parameters | |
489dce1b | 314 | Double_t meanP = trackIn->GetP(); |
315 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ()); | |
489dce1b | 316 | Int_t NclsDeDx = track->GetTPCNcls(); |
317 | ||
489dce1b | 318 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors |
d0b31f57 | 319 | if (NclsDeDx < 60) continue; |
489dce1b | 320 | if (TMath::Abs(trackIn->GetTgl()) > 1) continue; |
321 | if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue; | |
322 | ||
323 | // Get seeds | |
324 | AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i); | |
325 | if (!friendTrack) continue; | |
326 | TObject *calibObject; | |
327 | AliTPCseed *seed = 0; | |
328 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
329 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
330 | } | |
331 | ||
332 | if (seed) { | |
592a0c8f | 333 | Double_t TPCsignal = GetTPCdEdx(seed); |
3af3fbc4 | 334 | if (NclsDeDx > 100) fHistDeDxTotal->Fill(meanP, TPCsignal); |
489dce1b | 335 | // |
d0b31f57 | 336 | if (fLowMemoryConsumption) { |
337 | if (meanP < 20) continue; | |
338 | meanP = 30; // set all momenta to one in order to save memory | |
489dce1b | 339 | } |
d0b31f57 | 340 | //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta |
592a0c8f | 341 | Double_t vec[6] = {TPCsignal,time,1,meanDrift,meanP,runNumber}; |
d0b31f57 | 342 | fHistGainTime->Fill(vec); |
343 | } | |
489dce1b | 344 | |
d0b31f57 | 345 | } |
489dce1b | 346 | |
d0b31f57 | 347 | } |
348 | ||
349 | ||
350 | ||
351 | void AliTPCcalibTimeGain::ProcessBeamEvent(AliESDEvent *event) { | |
352 | ||
353 | AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); | |
354 | if (!ESDfriend) { | |
355 | Printf("ERROR: ESDfriend not available"); | |
356 | return; | |
357 | } | |
358 | // | |
359 | UInt_t time = event->GetTimeStamp(); | |
360 | Int_t ntracks = event->GetNumberOfTracks(); | |
592a0c8f | 361 | Int_t runNumber = event->GetRunNumber(); |
d0b31f57 | 362 | // |
363 | // track loop | |
364 | // | |
365 | for (Int_t i=0;i<ntracks;++i) { | |
366 | ||
367 | AliESDtrack *track = event->GetTrack(i); | |
368 | if (!track) continue; | |
369 | ||
370 | const AliExternalTrackParam * trackIn = track->GetInnerParam(); | |
371 | const AliExternalTrackParam * trackOut = track->GetOuterParam(); | |
372 | if (!trackIn) continue; | |
373 | if (!trackOut) continue; | |
374 | ||
375 | // calculate necessary track parameters | |
376 | Double_t meanP = trackIn->GetP(); | |
377 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ()); | |
378 | Int_t NclsDeDx = track->GetTPCNcls(); | |
379 | ||
380 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors | |
381 | if (NclsDeDx < 60) continue; | |
382 | if (TMath::Abs(trackIn->GetTgl()) > 1) continue; | |
383 | if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue; | |
384 | ||
385 | // Get seeds | |
386 | AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i); | |
387 | if (!friendTrack) continue; | |
388 | TObject *calibObject; | |
389 | AliTPCseed *seed = 0; | |
390 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
391 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
392 | } | |
393 | ||
394 | if (seed) { | |
592a0c8f | 395 | Double_t TPCsignal = GetTPCdEdx(seed); |
396 | fHistDeDxTotal->Fill(meanP, TPCsignal); | |
d0b31f57 | 397 | // |
398 | if (fLowMemoryConsumption) { | |
399 | if (meanP > 0.5 || meanP < 0.4) continue; | |
400 | meanP = 0.45; // set all momenta to one in order to save memory | |
401 | } | |
402 | //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta | |
592a0c8f | 403 | Double_t vec[6] = {TPCsignal,time,2,meanDrift,meanP,runNumber}; |
d0b31f57 | 404 | fHistGainTime->Fill(vec); |
489dce1b | 405 | } |
406 | ||
407 | } | |
d0b31f57 | 408 | |
489dce1b | 409 | } |
410 | ||
411 | ||
592a0c8f | 412 | Float_t AliTPCcalibTimeGain::GetTPCdEdx(AliTPCseed * seed) { |
413 | ||
414 | Double_t signal = 0; | |
415 | // | |
416 | if (!fUseCookAnalytical) { | |
417 | signal = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,fUseMax,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0); | |
418 | } else { | |
419 | signal = (1/fMIP)*seed->CookdEdxAnalytical(fLowerTrunc,fUpperTrunc,fUseMax); | |
420 | } | |
421 | // | |
422 | return signal; | |
423 | } | |
424 | ||
425 | ||
426 | void AliTPCcalibTimeGain::AnalyzeRun(Int_t minEntries) { | |
489dce1b | 427 | // |
428 | // | |
429 | // | |
489dce1b | 430 | if (fIsCosmic) { |
d0b31f57 | 431 | fHistGainTime->GetAxis(2)->SetRangeUser(0.51,1.49); // only cosmics |
432 | fHistGainTime->GetAxis(4)->SetRangeUser(20,100); // only Fermi-Plateau muons | |
489dce1b | 433 | } else { |
d0b31f57 | 434 | fHistGainTime->GetAxis(2)->SetRangeUser(1.51,2.49); // only beam data |
435 | fHistGainTime->GetAxis(4)->SetRangeUser(0.39,0.51); // only MIP pions | |
489dce1b | 436 | } |
489dce1b | 437 | // |
592a0c8f | 438 | fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,minEntries,10); |
489dce1b | 439 | // |
440 | return; | |
441 | } | |
442 | ||
443 | ||
592a0c8f | 444 | TGraphErrors * AliTPCcalibTimeGain::GetGraphGainVsTime(Int_t runNumber, Int_t minEntries) { |
445 | // | |
446 | // | |
447 | // | |
448 | if (runNumber == 0) { | |
449 | if (!fGainVsTime) { | |
450 | AnalyzeRun(minEntries); | |
451 | } | |
452 | } else { | |
453 | // 1st check if the current run was cosmic or beam event | |
454 | fHistGainTime->GetAxis(5)->SetRangeUser(runNumber,runNumber); | |
455 | AnalyzeRun(minEntries); | |
456 | } | |
457 | if (fGainVsTime->GetN() == 0) return 0; | |
458 | return fGainVsTime; | |
459 | } | |
460 | ||
489dce1b | 461 | Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) { |
462 | ||
463 | TIterator* iter = li->MakeIterator(); | |
464 | AliTPCcalibTimeGain* cal = 0; | |
465 | ||
466 | while ((cal = (AliTPCcalibTimeGain*)iter->Next())) { | |
467 | if (!cal->InheritsFrom(AliTPCcalibTimeGain::Class())) { | |
468 | Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName()); | |
469 | return -1; | |
470 | } | |
471 | ||
472 | // add histograms here... | |
473 | if (cal->GetHistGainTime()) fHistGainTime->Add(cal->GetHistGainTime()); | |
474 | if (cal->GetHistDeDxTotal()) fHistDeDxTotal->Add(cal->GetHistDeDxTotal()); | |
475 | ||
476 | } | |
477 | ||
478 | return 0; | |
479 | ||
480 | } | |
481 | ||
482 | ||
592a0c8f | 483 | AliSplineFit * AliTPCcalibTimeGain::MakeSplineFit(TGraphErrors * graph) { |
484 | // | |
485 | // | |
486 | // | |
487 | AliSplineFit *fit = new AliSplineFit(); | |
488 | fit->SetGraph(graph); | |
489 | fit->SetMinPoints(graph->GetN()+1); | |
490 | fit->InitKnots(graph,2,0,0.001); | |
491 | fit->SplineFit(0); | |
492 | return fit; | |
493 | ||
494 | } | |
495 | ||
489dce1b | 496 | |
3af3fbc4 | 497 | |
e55e5512 | 498 | TGraphErrors * AliTPCcalibTimeGain::GetGraphAttachment(Int_t minEntries, Int_t nmaxBin, Float_t /*fracLow*/, Float_t /*fracUp*/) { |
3af3fbc4 | 499 | // |
500 | // For each time bin the driftlength-dependence of the signal is fitted. | |
501 | // | |
502 | TH3D * hist = fHistGainTime->Projection(1, 0, 3); | |
503 | Double_t *xvec = new Double_t[hist->GetNbinsX()]; | |
504 | Double_t *yvec = new Double_t[hist->GetNbinsX()]; | |
505 | Double_t *xerr = new Double_t[hist->GetNbinsX()]; | |
506 | Double_t *yerr = new Double_t[hist->GetNbinsX()]; | |
507 | Int_t counter = 0; | |
508 | TH2D * projectionHist = 0x0; | |
509 | // | |
510 | for(Int_t i=1; i < hist->GetNbinsX(); i++) { | |
511 | Int_t nsum=0; | |
512 | Int_t imin = i; | |
513 | Int_t imax = i; | |
514 | for (Int_t idelta=0; idelta<nmaxBin; idelta++){ | |
515 | // | |
516 | imin = TMath::Max(i-idelta,1); | |
517 | imax = TMath::Min(i+idelta,hist->GetNbinsX()); | |
518 | nsum = TMath::Nint(hist->Integral(imin,imax,1,hist->GetNbinsY()-1,1,hist->GetNbinsZ()-1)); | |
519 | if (nsum==0) break; | |
520 | if (nsum>minEntries) break; | |
521 | } | |
522 | if (nsum<minEntries) continue; | |
523 | // | |
524 | hist->GetXaxis()->SetRange(imin,imax); | |
525 | projectionHist = (TH2D*)hist->Project3D("yzNUFNOF"); | |
526 | // | |
527 | TObjArray arr; | |
528 | projectionHist->FitSlicesY(0,2, projectionHist->GetNbinsX()-2,0,"QNR",&arr); | |
529 | TH1D * histAttach = (TH1D*)arr.At(1); | |
530 | TF1 pol1("polynom1","pol1",10,240); | |
531 | histAttach->Fit(&pol1,"QNR"); | |
532 | xvec[counter] = 0.5*(hist->GetXaxis()->GetBinCenter(imin)+hist->GetXaxis()->GetBinCenter(imax)); | |
533 | yvec[counter] = pol1.GetParameter(1)/pol1.GetParameter(0); | |
534 | xerr[counter] = 0; | |
535 | yerr[counter] = pol1.GetParError(1)/pol1.GetParameter(0); | |
536 | counter++; | |
537 | // | |
538 | delete projectionHist; | |
539 | } | |
540 | ||
541 | TGraphErrors * graphErrors = new TGraphErrors(counter, xvec, yvec, xerr, yerr); | |
542 | delete [] xvec; | |
543 | delete [] yvec; | |
544 | delete [] xerr; | |
545 | delete [] yerr; | |
546 | delete hist; | |
547 | return graphErrors; | |
548 | ||
549 | } | |
550 | ||
551 | ||
552 | ||
489dce1b | 553 | void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) { |
554 | ||
555 | // Method for the correct logarithmic binning of histograms | |
556 | ||
557 | TAxis *axis = h->GetAxis(axisDim); | |
558 | int bins = axis->GetNbins(); | |
559 | ||
560 | Double_t from = axis->GetXmin(); | |
561 | Double_t to = axis->GetXmax(); | |
562 | Double_t *new_bins = new Double_t[bins + 1]; | |
563 | ||
564 | new_bins[0] = from; | |
565 | Double_t factor = pow(to/from, 1./bins); | |
566 | ||
567 | for (int i = 1; i <= bins; i++) { | |
568 | new_bins[i] = factor * new_bins[i-1]; | |
569 | } | |
570 | axis->Set(bins, new_bins); | |
571 | delete new_bins; | |
572 | ||
573 | } | |
574 | ||
575 | ||
576 | void AliTPCcalibTimeGain::BinLogX(TH1 *h) { | |
577 | ||
578 | // Method for the correct logarithmic binning of histograms | |
579 | ||
580 | TAxis *axis = h->GetXaxis(); | |
581 | int bins = axis->GetNbins(); | |
582 | ||
583 | Double_t from = axis->GetXmin(); | |
584 | Double_t to = axis->GetXmax(); | |
585 | Double_t *new_bins = new Double_t[bins + 1]; | |
586 | ||
587 | new_bins[0] = from; | |
588 | Double_t factor = pow(to/from, 1./bins); | |
589 | ||
590 | for (int i = 1; i <= bins; i++) { | |
591 | new_bins[i] = factor * new_bins[i-1]; | |
592 | } | |
593 | axis->Set(bins, new_bins); | |
594 | delete new_bins; | |
595 | ||
596 | } | |
597 | ||
598 | ||
599 | ||
600 | void AliTPCcalibTimeGain::CalculateBetheAlephParams(TH2F *hist, Double_t * ini) { | |
601 | //{0.0762*MIP,10.632,1.34e-05,1.863,1.948} | |
602 | const Double_t sigma = 0.06; | |
603 | ||
d0b31f57 | 604 | TH2F *histBG = new TH2F("histBG","dEdxBg; #beta #gamma; TPC signal (a.u.)",TMath::Nint(0.5*hist->GetNbinsX()),0.1,5000.,hist->GetNbinsY(),hist->GetYaxis()->GetXmin(),hist->GetYaxis()->GetXmax()); |
489dce1b | 605 | BinLogX(histBG); |
606 | ||
d0b31f57 | 607 | TF1 *foElectron = new TF1("foElectron", "AliExternalTrackParam::BetheBlochAleph(x/0.000511,[0],[1],[2],[3],[4])",0.01,100); |
489dce1b | 608 | TF1 *foMuon = new TF1("foMuon", "AliExternalTrackParam::BetheBlochAleph(x/0.1056,[0],[1],[2],[3],[4])",0.01,100); |
609 | TF1 *foPion = new TF1("foPion", "AliExternalTrackParam::BetheBlochAleph(x/0.138,[0],[1],[2],[3],[4])",0.01,100); | |
610 | TF1 *foKaon = new TF1("foKaon", "AliExternalTrackParam::BetheBlochAleph(x/0.498,[0],[1],[2],[3],[4])",0.01,100); | |
611 | TF1 *foProton = new TF1("foProton", "AliExternalTrackParam::BetheBlochAleph(x/0.938,[0],[1],[2],[3],[4])",0.01,100); | |
612 | foElectron->SetParameters(ini); | |
613 | foMuon->SetParameters(ini); | |
614 | foPion->SetParameters(ini); | |
615 | foKaon->SetParameters(ini); | |
616 | foProton->SetParameters(ini); | |
617 | ||
618 | TCanvas *CanvCheck1 = new TCanvas(); | |
619 | hist->Draw("colz"); | |
620 | foElectron->Draw("same"); | |
621 | foMuon->Draw("same"); | |
622 | foPion->Draw("same"); | |
623 | foKaon->Draw("same"); | |
624 | foProton->Draw("same"); | |
625 | ||
626 | // Loop over all points of the input histogram | |
627 | ||
628 | for(Int_t i=1; i < hist->GetNbinsX(); i++) { | |
629 | Double_t x = hist->GetXaxis()->GetBinCenter(i); | |
630 | for(Int_t j=1; j < hist->GetNbinsY(); j++) { | |
631 | Long64_t n = hist->GetBin(i, j); | |
632 | Double_t y = hist->GetYaxis()->GetBinCenter(j); | |
633 | Double_t entries = hist->GetBinContent(n); | |
634 | Double_t mass = 0; | |
635 | ||
636 | // 1. identify protons | |
637 | mass = 0.938; | |
638 | if (TMath::Abs(y - foProton->Eval(x))/foProton->Eval(x) < 4*sigma && x < 0.65 ) { | |
639 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
640 | } | |
641 | ||
642 | // 2. identify electrons | |
643 | mass = 0.000511; | |
644 | if (fIsCosmic) { | |
645 | if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 4*sigma && (x>0.25&&x<0.7) && fIsCosmic) { | |
646 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
647 | } | |
648 | } else { | |
d0b31f57 | 649 | if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 2*sigma && ((x>0.25&&x<0.35) || (x>1.5&&x<1.8) || (x>0.65&&x<0.7))) { |
489dce1b | 650 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); |
651 | } | |
652 | } | |
653 | ||
654 | // 3. identify either muons or pions depending on cosmic or not | |
655 | if (fIsCosmic) { | |
656 | mass = 0.1056; | |
657 | if (TMath::Abs(y - foMuon->Eval(x))/foMuon->Eval(x) < 4*sigma && x > 0.25 && x < 100 ) { | |
658 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
659 | } | |
660 | } else { | |
661 | mass = 0.1396; | |
662 | if (TMath::Abs(y - foPion->Eval(x))/foPion->Eval(x) < 4*sigma && x > 0.15 && x < 2) { | |
663 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
664 | } | |
665 | } | |
666 | ||
667 | // 4. for pp also Kaons must be included | |
668 | if (!fIsCosmic) { | |
669 | mass = 0.4936; | |
670 | if (TMath::Abs(y - foKaon->Eval(x))/foKaon->Eval(x) < 4*sigma && x > 0.2 && x < 0.3 ) { | |
671 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
672 | } | |
673 | } | |
674 | } | |
675 | } | |
676 | ||
677 | // Fit Aleph-Parameters to the obtained profile | |
678 | TF1 * funcAlephD = new TF1("AlephParametrizationD", "AliExternalTrackParam::BetheBlochAleph(x,[0],[1],[2],[3],[4])",0.3,10000); | |
679 | funcAlephD->SetParameters(ini); | |
680 | ||
681 | TCanvas *CanvCheck2 = new TCanvas(); | |
682 | histBG->Draw(); | |
683 | ||
684 | //FitSlices | |
685 | TObjArray * arr = new TObjArray(); | |
686 | histBG->FitSlicesY(0,0,-1,0,"QN",arr); | |
687 | TH1D * fitMean = (TH1D*) arr->At(1); | |
688 | fitMean->Draw("same"); | |
689 | ||
690 | funcAlephD->SetParLimits(2,1e-3,1e-7); | |
691 | funcAlephD->SetParLimits(3,0.5,3.5); | |
692 | funcAlephD->SetParLimits(4,0.5,3.5); | |
693 | fitMean->Fit(funcAlephD, "QNR"); | |
694 | funcAlephD->Draw("same"); | |
695 | ||
696 | for(Int_t i=0;i<5;i++) ini[i] = funcAlephD->GetParameter(i); | |
697 | ||
698 | foElectron->SetParameters(ini); | |
699 | foMuon->SetParameters(ini); | |
700 | foPion->SetParameters(ini); | |
701 | foKaon->SetParameters(ini); | |
702 | foProton->SetParameters(ini); | |
703 | ||
704 | TCanvas *CanvCheck3 = new TCanvas(); | |
705 | hist->Draw("colz"); | |
706 | foElectron->Draw("same"); | |
707 | foMuon->Draw("same"); | |
708 | foPion->Draw("same"); | |
709 | foKaon->Draw("same"); | |
710 | foProton->Draw("same"); | |
711 | ||
712 | CanvCheck1->Print(); | |
713 | CanvCheck2->Print(); | |
714 | CanvCheck3->Print(); | |
715 | ||
716 | return; | |
717 | ||
718 | ||
719 | } |