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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 | ||
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 | |
22 | gSystem->Load("libANALYSIS"); | |
23 | gSystem->Load("libSTAT"); | |
24 | gSystem->Load("libTPCcalib"); | |
25 | ||
26 | ||
27 | //1. Do calibration ... | |
28 | // | |
29 | // compare reference | |
30 | ||
31 | // | |
32 | //2. Visualize results | |
33 | // | |
34 | TFile fcalib("CalibObjects.root"); | |
35 | TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib"); | |
36 | AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain"); | |
37 | TGraphErrors * gr = gain->GetGraphGainVsTime(0,1000) | |
38 | ||
39 | // gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6) | |
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") | |
44 | ||
45 | // | |
46 | // MakeSlineFit example | |
47 | // | |
48 | AliSplineFit *fit = AliTPCcalibTimeGain::MakeSplineFit(gr) | |
49 | ||
50 | TGraph * grfit = fit.MakeGraph(gr->GetX()[0],gr->GetX()[gr->GetN()-1],50000,0); | |
51 | ||
52 | gr->SetMarkerStyle(25); | |
53 | gr->Draw("lp"); | |
54 | grfit->SetLineColor(2); | |
55 | grfit->Draw("lu"); | |
56 | ||
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 | ||
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" | |
145 | #include "TGraphErrors.h" | |
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 | #include "AliESDv0.h" | |
168 | ||
169 | #include "AliLog.h" | |
170 | ||
171 | #include "AliTPCcalibTimeGain.h" | |
172 | ||
173 | #include "TTreeStream.h" | |
174 | #include "AliTPCTracklet.h" | |
175 | #include "TTimeStamp.h" | |
176 | #include "AliTPCcalibDB.h" | |
177 | #include "AliTPCcalibLaser.h" | |
178 | #include "AliDCSSensorArray.h" | |
179 | #include "AliDCSSensor.h" | |
180 | ||
181 | ClassImp(AliTPCcalibTimeGain) | |
182 | ||
183 | ||
184 | AliTPCcalibTimeGain::AliTPCcalibTimeGain() | |
185 | :AliTPCcalibBase(), | |
186 | fHistGainTime(0), | |
187 | fGainVsTime(0), | |
188 | fHistDeDxTotal(0), | |
189 | fIntegrationTimeDeDx(0), | |
190 | fMIP(0), | |
191 | fUseMax(0), | |
192 | fLowerTrunc(0), | |
193 | fUpperTrunc(0), | |
194 | fUseShapeNorm(0), | |
195 | fUsePosNorm(0), | |
196 | fUsePadNorm(0), | |
197 | fUseCookAnalytical(0), | |
198 | fIsCosmic(0), | |
199 | fLowMemoryConsumption(0) | |
200 | { | |
201 | // | |
202 | // Default constructor | |
203 | // | |
204 | AliInfo("Default Constructor"); | |
205 | } | |
206 | ||
207 | ||
208 | AliTPCcalibTimeGain::AliTPCcalibTimeGain(const Text_t *name, const Text_t *title, UInt_t StartTime, UInt_t EndTime, Int_t deltaIntegrationTimeGain) | |
209 | :AliTPCcalibBase(), | |
210 | fHistGainTime(0), | |
211 | fGainVsTime(0), | |
212 | fHistDeDxTotal(0), | |
213 | fIntegrationTimeDeDx(0), | |
214 | fMIP(0), | |
215 | fUseMax(0), | |
216 | fLowerTrunc(0), | |
217 | fUpperTrunc(0), | |
218 | fUseShapeNorm(0), | |
219 | fUsePosNorm(0), | |
220 | fUsePadNorm(0), | |
221 | fUseCookAnalytical(0), | |
222 | fIsCosmic(0), | |
223 | fLowMemoryConsumption(0) | |
224 | { | |
225 | // | |
226 | // No default constructor | |
227 | // | |
228 | SetName(name); | |
229 | SetTitle(title); | |
230 | ||
231 | AliInfo("Non Default Constructor"); | |
232 | ||
233 | fIntegrationTimeDeDx = deltaIntegrationTimeGain; | |
234 | ||
235 | Double_t deltaTime = EndTime - StartTime; | |
236 | ||
237 | ||
238 | // main histogram for time dependence: dE/dx, time, type (1-muon cosmic,2-pion beam data, 3&4 - proton points at higher dE/dx), meanDriftlength, momenta (only filled if enough space is available), run number, eta | |
239 | Int_t timeBins = TMath::Nint(deltaTime/deltaIntegrationTimeGain); | |
240 | Int_t binsGainTime[7] = {150, timeBins, 4, 25, 200, 10000000, 20}; | |
241 | Double_t xminGainTime[7] = {0.5, StartTime, 0.5, 0, 0.1, -0.5, -1}; | |
242 | Double_t xmaxGainTime[7] = { 8, EndTime, 4.5, 250, 50, 9999999.5, 1}; | |
243 | fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx,time,type,driftlength,momenta,run number, eta;dEdx",7,binsGainTime,xminGainTime,xmaxGainTime); | |
244 | BinLogX(fHistGainTime, 4); | |
245 | // | |
246 | fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,8); | |
247 | BinLogX(fHistDeDxTotal); | |
248 | ||
249 | // default values for dE/dx | |
250 | fMIP = 50.; | |
251 | fUseMax = kTRUE; | |
252 | fLowerTrunc = 0.02; | |
253 | fUpperTrunc = 0.6; | |
254 | fUseShapeNorm = kTRUE; | |
255 | fUsePosNorm = kFALSE; | |
256 | fUsePadNorm = kFALSE; | |
257 | fUseCookAnalytical = kFALSE; | |
258 | // | |
259 | fIsCosmic = kTRUE; | |
260 | fLowMemoryConsumption = kTRUE; | |
261 | // | |
262 | ||
263 | } | |
264 | ||
265 | ||
266 | ||
267 | AliTPCcalibTimeGain::~AliTPCcalibTimeGain(){ | |
268 | // | |
269 | // Destructor | |
270 | // | |
271 | delete fHistGainTime; | |
272 | delete fGainVsTime; | |
273 | delete fHistDeDxTotal; | |
274 | } | |
275 | ||
276 | ||
277 | void AliTPCcalibTimeGain::Process(AliESDEvent *event) { | |
278 | // | |
279 | // main track loop | |
280 | // | |
281 | if (!event) { | |
282 | Printf("ERROR: ESD not available"); | |
283 | return; | |
284 | } | |
285 | ||
286 | if (fIsCosmic) { // this should be removed at some point based on trigger mask !? | |
287 | ProcessCosmicEvent(event); | |
288 | } else { | |
289 | ProcessBeamEvent(event); | |
290 | } | |
291 | ||
292 | ||
293 | ||
294 | ||
295 | } | |
296 | ||
297 | ||
298 | void AliTPCcalibTimeGain::ProcessCosmicEvent(AliESDEvent *event) { | |
299 | // | |
300 | // Process in case of cosmic event | |
301 | // | |
302 | AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); | |
303 | if (!esdFriend) { | |
304 | Printf("ERROR: ESDfriend not available"); | |
305 | return; | |
306 | } | |
307 | // | |
308 | UInt_t time = event->GetTimeStamp(); | |
309 | Int_t ntracks = event->GetNumberOfTracks(); | |
310 | Int_t runNumber = event->GetRunNumber(); | |
311 | // | |
312 | // track loop | |
313 | // | |
314 | for (Int_t i=0;i<ntracks;++i) { | |
315 | ||
316 | AliESDtrack *track = event->GetTrack(i); | |
317 | if (!track) continue; | |
318 | AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i); | |
319 | if (!friendTrack) continue; | |
320 | const AliExternalTrackParam * trackIn = track->GetInnerParam(); | |
321 | const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut(); | |
322 | if (!trackIn) continue; | |
323 | if (!trackOut) continue; | |
324 | ||
325 | // calculate necessary track parameters | |
326 | Double_t meanP = trackIn->GetP(); | |
327 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ()); | |
328 | Int_t nclsDeDx = track->GetTPCNcls(); | |
329 | ||
330 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors | |
331 | if (nclsDeDx < 60) continue; | |
332 | if (TMath::Abs(trackIn->GetTgl()) > 1) continue; | |
333 | if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue; | |
334 | ||
335 | // Get seeds | |
336 | TObject *calibObject; | |
337 | AliTPCseed *seed = 0; | |
338 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
339 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
340 | } | |
341 | ||
342 | if (seed) { | |
343 | Double_t tpcSignal = GetTPCdEdx(seed); | |
344 | if (nclsDeDx > 100) fHistDeDxTotal->Fill(meanP, tpcSignal); | |
345 | // | |
346 | if (fLowMemoryConsumption) { | |
347 | if (meanP < 20) continue; | |
348 | meanP = 30; // set all momenta to one in order to save memory | |
349 | } | |
350 | //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta | |
351 | Double_t vec[6] = {tpcSignal,time,1,meanDrift,meanP,runNumber}; | |
352 | fHistGainTime->Fill(vec); | |
353 | } | |
354 | ||
355 | } | |
356 | ||
357 | } | |
358 | ||
359 | ||
360 | ||
361 | void AliTPCcalibTimeGain::ProcessBeamEvent(AliESDEvent *event) { | |
362 | // | |
363 | // Process in case of beam event | |
364 | // | |
365 | AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); | |
366 | if (!esdFriend) { | |
367 | Printf("ERROR: ESDfriend not available"); | |
368 | return; | |
369 | } | |
370 | // | |
371 | UInt_t time = event->GetTimeStamp(); | |
372 | Int_t ntracks = event->GetNumberOfTracks(); | |
373 | Int_t runNumber = event->GetRunNumber(); | |
374 | // | |
375 | // track loop | |
376 | // | |
377 | for (Int_t i=0;i<ntracks;++i) { // begin track loop | |
378 | ||
379 | AliESDtrack *track = event->GetTrack(i); | |
380 | if (!track) continue; | |
381 | AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i); | |
382 | if (!friendTrack) continue; | |
383 | ||
384 | const AliExternalTrackParam * trackIn = track->GetInnerParam(); | |
385 | const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut(); | |
386 | if (!trackIn) continue; | |
387 | if (!trackOut) continue; | |
388 | ||
389 | // calculate necessary track parameters | |
390 | Double_t meanP = trackIn->GetP(); | |
391 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ()); | |
392 | Int_t nclsDeDx = track->GetTPCNcls(); | |
393 | ||
394 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors | |
395 | if (nclsDeDx < 60) continue; | |
396 | //if (TMath::Abs(trackIn->GetTgl()) > 1) continue; | |
397 | //if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue; | |
398 | if (TMath::Abs(trackIn->Eta()) > 1) continue; | |
399 | UInt_t status = track->GetStatus(); | |
400 | if ((status&AliESDtrack::kTPCrefit)==0) continue; | |
401 | if (track->GetNcls(0) < 3) continue; // ITS clusters | |
402 | Float_t dca[2], cov[3]; | |
403 | track->GetImpactParameters(dca,cov); | |
404 | if (dca[0] > 7 || dca[0] < 0.000001) continue; // cut in xy | |
405 | Double_t eta = trackIn->Eta(); | |
406 | ||
407 | // Get seeds | |
408 | TObject *calibObject; | |
409 | AliTPCseed *seed = 0; | |
410 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
411 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
412 | } | |
413 | ||
414 | if (seed) { | |
415 | Int_t particleCase = 0; | |
416 | if (meanP < 0.5 && meanP > 0.4) particleCase = 2; // MIP pions | |
417 | if (meanP < 0.57 && meanP > 0.56) particleCase = 3; // protons 1 | |
418 | if (meanP < 0.66 && meanP > 0.65) particleCase = 4; // protons 2 | |
419 | // | |
420 | if (fLowMemoryConsumption && particleCase == 0) continue; | |
421 | // | |
422 | Double_t tpcSignal = GetTPCdEdx(seed); | |
423 | fHistDeDxTotal->Fill(meanP, tpcSignal); | |
424 | // | |
425 | //dE/dx, time, type (1-muon cosmic,2-pion beam data, 3&4 protons), momenta, runNumner, eta | |
426 | Double_t vec[7] = {tpcSignal,time,particleCase,meanDrift,meanP,runNumber, eta}; | |
427 | fHistGainTime->Fill(vec); | |
428 | } | |
429 | ||
430 | } // end track loop | |
431 | // | |
432 | // V0 loop -- in beam events the cosmic part of the histogram is filled with GammaConversions | |
433 | // | |
434 | for(Int_t iv0 = 0; iv0 < event->GetNumberOfV0s(); iv0++) { | |
435 | AliESDv0 * v0 = event->GetV0(iv0); | |
436 | if (!v0->GetOnFlyStatus()) continue; | |
437 | if (v0->GetEffMass(0,0) > 0.02) continue; // select low inv. mass | |
438 | Double_t xyz[3]; | |
439 | v0->GetXYZ(xyz[0], xyz[1], xyz[2]); | |
440 | if (TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]) < 3 || TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]) > 30) continue; | |
441 | // | |
442 | // "loop over daughters" | |
443 | // | |
444 | for(Int_t idaughter = 0; idaughter < 2; idaughter++) { // daughter loop | |
445 | Int_t index = idaughter == 0 ? v0->GetPindex() : v0->GetNindex(); | |
446 | AliESDtrack * trackP = event->GetTrack(index); | |
447 | AliESDfriendTrack *friendTrackP = esdFriend->GetTrack(index); | |
448 | if (!friendTrackP) continue; | |
449 | const AliExternalTrackParam * trackPIn = trackP->GetInnerParam(); | |
450 | const AliExternalTrackParam * trackPOut = friendTrackP->GetTPCOut(); | |
451 | if (!trackPIn) continue; | |
452 | if (!trackPOut) continue; | |
453 | // calculate necessary track parameters | |
454 | Double_t meanP = trackPIn->GetP(); | |
455 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackPIn->GetZ() + trackPOut->GetZ()); | |
456 | Int_t nclsDeDx = trackP->GetTPCNcls(); | |
457 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors | |
458 | if (nclsDeDx < 60) continue; | |
459 | if (TMath::Abs(trackPIn->GetTgl()) > 1) continue; | |
460 | // | |
461 | TObject *calibObject; | |
462 | AliTPCseed *seed = 0; | |
463 | for (Int_t l=0;(calibObject=friendTrackP->GetCalibObject(l));++l) { | |
464 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
465 | } | |
466 | if (seed) { | |
467 | if (fLowMemoryConsumption) { | |
468 | if (meanP > 0.5 || meanP < 0.4) continue; | |
469 | meanP = 0.45; // set all momenta to one in order to save memory | |
470 | } | |
471 | Double_t tpcSignal = GetTPCdEdx(seed); | |
472 | //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta | |
473 | Double_t vec[6] = {tpcSignal,time,1,meanDrift,meanP,runNumber}; | |
474 | fHistGainTime->Fill(vec); | |
475 | } | |
476 | } | |
477 | ||
478 | } | |
479 | ||
480 | } | |
481 | ||
482 | ||
483 | Float_t AliTPCcalibTimeGain::GetTPCdEdx(AliTPCseed * seed) { | |
484 | // | |
485 | // calculate tpc dEdx | |
486 | // | |
487 | Double_t signal = 0; | |
488 | // | |
489 | if (!fUseCookAnalytical) { | |
490 | signal = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,fUseMax,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0); | |
491 | } else { | |
492 | signal = (1/fMIP)*seed->CookdEdxAnalytical(fLowerTrunc,fUpperTrunc,fUseMax); | |
493 | } | |
494 | // | |
495 | return signal; | |
496 | } | |
497 | ||
498 | ||
499 | void AliTPCcalibTimeGain::AnalyzeRun(Int_t minEntries) { | |
500 | // | |
501 | // Analyze results of calibration | |
502 | // | |
503 | if (fIsCosmic) { | |
504 | fHistGainTime->GetAxis(2)->SetRangeUser(0.51,1.49); // only cosmics | |
505 | fHistGainTime->GetAxis(4)->SetRangeUser(20,100); // only Fermi-Plateau muons | |
506 | } else { | |
507 | fHistGainTime->GetAxis(2)->SetRangeUser(1.51,2.49); // only beam data | |
508 | fHistGainTime->GetAxis(4)->SetRangeUser(0.39,0.51); // only MIP pions | |
509 | } | |
510 | // | |
511 | fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,minEntries,10); | |
512 | // | |
513 | return; | |
514 | } | |
515 | ||
516 | ||
517 | TGraphErrors * AliTPCcalibTimeGain::GetGraphGainVsTime(Int_t runNumber, Int_t minEntries) { | |
518 | // | |
519 | // Analyze results and get the graph | |
520 | // | |
521 | if (runNumber == 0) { | |
522 | if (!fGainVsTime) { | |
523 | AnalyzeRun(minEntries); | |
524 | } | |
525 | } else { | |
526 | // 1st check if the current run was cosmic or beam event | |
527 | fHistGainTime->GetAxis(5)->SetRangeUser(runNumber,runNumber); | |
528 | AnalyzeRun(minEntries); | |
529 | } | |
530 | if (fGainVsTime->GetN() == 0) return 0; | |
531 | return fGainVsTime; | |
532 | } | |
533 | ||
534 | Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) { | |
535 | // | |
536 | // merge component | |
537 | // | |
538 | TIterator* iter = li->MakeIterator(); | |
539 | AliTPCcalibTimeGain* cal = 0; | |
540 | ||
541 | while ((cal = (AliTPCcalibTimeGain*)iter->Next())) { | |
542 | if (!cal->InheritsFrom(AliTPCcalibTimeGain::Class())) { | |
543 | Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName()); | |
544 | return -1; | |
545 | } | |
546 | ||
547 | // add histograms here... | |
548 | if (cal->GetHistGainTime()) fHistGainTime->Add(cal->GetHistGainTime()); | |
549 | if (cal->GetHistDeDxTotal()) fHistDeDxTotal->Add(cal->GetHistDeDxTotal()); | |
550 | ||
551 | } | |
552 | ||
553 | return 0; | |
554 | ||
555 | } | |
556 | ||
557 | ||
558 | AliSplineFit * AliTPCcalibTimeGain::MakeSplineFit(TGraphErrors * graph) { | |
559 | // | |
560 | // make spline fit of gain | |
561 | // | |
562 | AliSplineFit *fit = new AliSplineFit(); | |
563 | fit->SetGraph(graph); | |
564 | fit->SetMinPoints(graph->GetN()+1); | |
565 | fit->InitKnots(graph,2,0,0.001); | |
566 | fit->SplineFit(0); | |
567 | return fit; | |
568 | ||
569 | } | |
570 | ||
571 | ||
572 | ||
573 | TGraphErrors * AliTPCcalibTimeGain::GetGraphAttachment(Int_t minEntries, Int_t nmaxBin, Float_t /*fracLow*/, Float_t /*fracUp*/) { | |
574 | // | |
575 | // For each time bin the driftlength-dependence of the signal is fitted. | |
576 | // | |
577 | TH3D * hist = fHistGainTime->Projection(1, 0, 3); | |
578 | Double_t *xvec = new Double_t[hist->GetNbinsX()]; | |
579 | Double_t *yvec = new Double_t[hist->GetNbinsX()]; | |
580 | Double_t *xerr = new Double_t[hist->GetNbinsX()]; | |
581 | Double_t *yerr = new Double_t[hist->GetNbinsX()]; | |
582 | Int_t counter = 0; | |
583 | TH2D * projectionHist = 0x0; | |
584 | // | |
585 | for(Int_t i=1; i < hist->GetNbinsX(); i++) { | |
586 | Int_t nsum=0; | |
587 | Int_t imin = i; | |
588 | Int_t imax = i; | |
589 | for (Int_t idelta=0; idelta<nmaxBin; idelta++){ | |
590 | // | |
591 | imin = TMath::Max(i-idelta,1); | |
592 | imax = TMath::Min(i+idelta,hist->GetNbinsX()); | |
593 | nsum = TMath::Nint(hist->Integral(imin,imax,1,hist->GetNbinsY()-1,1,hist->GetNbinsZ()-1)); | |
594 | if (nsum==0) break; | |
595 | if (nsum>minEntries) break; | |
596 | } | |
597 | if (nsum<minEntries) continue; | |
598 | // | |
599 | hist->GetXaxis()->SetRange(imin,imax); | |
600 | projectionHist = (TH2D*)hist->Project3D("yzNUFNOF"); | |
601 | // | |
602 | TObjArray arr; | |
603 | projectionHist->FitSlicesY(0,2, projectionHist->GetNbinsX()-2,0,"QNR",&arr); | |
604 | TH1D * histAttach = (TH1D*)arr.At(1); | |
605 | TF1 pol1("polynom1","pol1",10,240); | |
606 | histAttach->Fit(&pol1,"QNR"); | |
607 | xvec[counter] = 0.5*(hist->GetXaxis()->GetBinCenter(imin)+hist->GetXaxis()->GetBinCenter(imax)); | |
608 | yvec[counter] = pol1.GetParameter(1)/pol1.GetParameter(0); | |
609 | xerr[counter] = 0; | |
610 | yerr[counter] = pol1.GetParError(1)/pol1.GetParameter(0); | |
611 | counter++; | |
612 | // | |
613 | delete projectionHist; | |
614 | } | |
615 | ||
616 | TGraphErrors * graphErrors = new TGraphErrors(counter, xvec, yvec, xerr, yerr); | |
617 | delete [] xvec; | |
618 | delete [] yvec; | |
619 | delete [] xerr; | |
620 | delete [] yerr; | |
621 | delete hist; | |
622 | return graphErrors; | |
623 | ||
624 | } | |
625 | ||
626 | ||
627 | ||
628 | void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) { | |
629 | // | |
630 | // Method for the correct logarithmic binning of histograms | |
631 | // | |
632 | TAxis *axis = h->GetAxis(axisDim); | |
633 | int bins = axis->GetNbins(); | |
634 | ||
635 | Double_t from = axis->GetXmin(); | |
636 | Double_t to = axis->GetXmax(); | |
637 | Double_t *newBins = new Double_t[bins + 1]; | |
638 | ||
639 | newBins[0] = from; | |
640 | Double_t factor = pow(to/from, 1./bins); | |
641 | ||
642 | for (int i = 1; i <= bins; i++) { | |
643 | newBins[i] = factor * newBins[i-1]; | |
644 | } | |
645 | axis->Set(bins, newBins); | |
646 | delete[] newBins; | |
647 | ||
648 | } | |
649 | ||
650 | ||
651 | void AliTPCcalibTimeGain::BinLogX(TH1 *h) { | |
652 | // | |
653 | // Method for the correct logarithmic binning of histograms | |
654 | // | |
655 | TAxis *axis = h->GetXaxis(); | |
656 | int bins = axis->GetNbins(); | |
657 | ||
658 | Double_t from = axis->GetXmin(); | |
659 | Double_t to = axis->GetXmax(); | |
660 | Double_t *newBins = new Double_t[bins + 1]; | |
661 | ||
662 | newBins[0] = from; | |
663 | Double_t factor = pow(to/from, 1./bins); | |
664 | ||
665 | for (int i = 1; i <= bins; i++) { | |
666 | newBins[i] = factor * newBins[i-1]; | |
667 | } | |
668 | axis->Set(bins, newBins); | |
669 | delete[] newBins; | |
670 | ||
671 | } | |
672 | ||
673 | ||
674 | ||
675 | void AliTPCcalibTimeGain::CalculateBetheAlephParams(TH2F *hist, Double_t * ini) { | |
676 | // | |
677 | // Fit the bethe bloch params | |
678 | // | |
679 | //{0.0762*MIP,10.632,1.34e-05,1.863,1.948} | |
680 | const Double_t sigma = 0.06; | |
681 | ||
682 | 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()); | |
683 | BinLogX(histBG); | |
684 | ||
685 | TF1 *foElectron = new TF1("foElectron", "AliExternalTrackParam::BetheBlochAleph(x/0.000511,[0],[1],[2],[3],[4])",0.01,100); | |
686 | TF1 *foMuon = new TF1("foMuon", "AliExternalTrackParam::BetheBlochAleph(x/0.1056,[0],[1],[2],[3],[4])",0.01,100); | |
687 | TF1 *foPion = new TF1("foPion", "AliExternalTrackParam::BetheBlochAleph(x/0.138,[0],[1],[2],[3],[4])",0.01,100); | |
688 | TF1 *foKaon = new TF1("foKaon", "AliExternalTrackParam::BetheBlochAleph(x/0.498,[0],[1],[2],[3],[4])",0.01,100); | |
689 | TF1 *foProton = new TF1("foProton", "AliExternalTrackParam::BetheBlochAleph(x/0.938,[0],[1],[2],[3],[4])",0.01,100); | |
690 | foElectron->SetParameters(ini); | |
691 | foMuon->SetParameters(ini); | |
692 | foPion->SetParameters(ini); | |
693 | foKaon->SetParameters(ini); | |
694 | foProton->SetParameters(ini); | |
695 | ||
696 | TCanvas *canvCheck1 = new TCanvas(); | |
697 | hist->Draw("colz"); | |
698 | foElectron->Draw("same"); | |
699 | foMuon->Draw("same"); | |
700 | foPion->Draw("same"); | |
701 | foKaon->Draw("same"); | |
702 | foProton->Draw("same"); | |
703 | ||
704 | // Loop over all points of the input histogram | |
705 | ||
706 | for(Int_t i=1; i < hist->GetNbinsX(); i++) { | |
707 | Double_t x = hist->GetXaxis()->GetBinCenter(i); | |
708 | for(Int_t j=1; j < hist->GetNbinsY(); j++) { | |
709 | Long64_t n = hist->GetBin(i, j); | |
710 | Double_t y = hist->GetYaxis()->GetBinCenter(j); | |
711 | Double_t entries = hist->GetBinContent(n); | |
712 | Double_t mass = 0; | |
713 | ||
714 | // 1. identify protons | |
715 | mass = 0.938; | |
716 | if (TMath::Abs(y - foProton->Eval(x))/foProton->Eval(x) < 4*sigma && x < 0.65 ) { | |
717 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
718 | } | |
719 | ||
720 | // 2. identify electrons | |
721 | mass = 0.000511; | |
722 | if (fIsCosmic) { | |
723 | if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 4*sigma && (x>0.25&&x<0.7) && fIsCosmic) { | |
724 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
725 | } | |
726 | } else { | |
727 | 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))) { | |
728 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
729 | } | |
730 | } | |
731 | ||
732 | // 3. identify either muons or pions depending on cosmic or not | |
733 | if (fIsCosmic) { | |
734 | mass = 0.1056; | |
735 | if (TMath::Abs(y - foMuon->Eval(x))/foMuon->Eval(x) < 4*sigma && x > 0.25 && x < 100 ) { | |
736 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
737 | } | |
738 | } else { | |
739 | mass = 0.1396; | |
740 | if (TMath::Abs(y - foPion->Eval(x))/foPion->Eval(x) < 4*sigma && x > 0.15 && x < 2) { | |
741 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
742 | } | |
743 | } | |
744 | ||
745 | // 4. for pp also Kaons must be included | |
746 | if (!fIsCosmic) { | |
747 | mass = 0.4936; | |
748 | if (TMath::Abs(y - foKaon->Eval(x))/foKaon->Eval(x) < 4*sigma && x > 0.2 && x < 0.3 ) { | |
749 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
750 | } | |
751 | } | |
752 | } | |
753 | } | |
754 | ||
755 | // Fit Aleph-Parameters to the obtained profile | |
756 | TF1 * funcAlephD = new TF1("AlephParametrizationD", "AliExternalTrackParam::BetheBlochAleph(x,[0],[1],[2],[3],[4])",0.3,10000); | |
757 | funcAlephD->SetParameters(ini); | |
758 | ||
759 | TCanvas *canvCheck2 = new TCanvas(); | |
760 | histBG->Draw(); | |
761 | ||
762 | //FitSlices | |
763 | TObjArray * arr = new TObjArray(); | |
764 | histBG->FitSlicesY(0,0,-1,0,"QN",arr); | |
765 | TH1D * fitMean = (TH1D*) arr->At(1); | |
766 | fitMean->Draw("same"); | |
767 | ||
768 | funcAlephD->SetParLimits(2,1e-3,1e-7); | |
769 | funcAlephD->SetParLimits(3,0.5,3.5); | |
770 | funcAlephD->SetParLimits(4,0.5,3.5); | |
771 | fitMean->Fit(funcAlephD, "QNR"); | |
772 | funcAlephD->Draw("same"); | |
773 | ||
774 | for(Int_t i=0;i<5;i++) ini[i] = funcAlephD->GetParameter(i); | |
775 | ||
776 | foElectron->SetParameters(ini); | |
777 | foMuon->SetParameters(ini); | |
778 | foPion->SetParameters(ini); | |
779 | foKaon->SetParameters(ini); | |
780 | foProton->SetParameters(ini); | |
781 | ||
782 | TCanvas *canvCheck3 = new TCanvas(); | |
783 | hist->Draw("colz"); | |
784 | foElectron->Draw("same"); | |
785 | foMuon->Draw("same"); | |
786 | foPion->Draw("same"); | |
787 | foKaon->Draw("same"); | |
788 | foProton->Draw("same"); | |
789 | ||
790 | canvCheck1->Print(); | |
791 | canvCheck2->Print(); | |
792 | canvCheck3->Print(); | |
793 | ||
794 | return; | |
795 | ||
796 | ||
797 | } |