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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" | |
0efde530 | 159 | #include "AliESDEvent.h" |
489dce1b | 160 | #include "AliESDfriend.h" |
0efde530 | 161 | #include "AliESDInputHandler.h" |
489dce1b | 162 | #include "AliAnalysisManager.h" |
163 | ||
164 | #include "AliTracker.h" | |
165 | #include "AliMagF.h" | |
166 | #include "AliTPCCalROC.h" | |
46e89793 | 167 | #include "AliESDv0.h" |
489dce1b | 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 | ||
afa85729 | 183 | Double_t AliTPCcalibTimeGain::fgMergeEntriesCut=10000000.; |
489dce1b | 184 | |
185 | AliTPCcalibTimeGain::AliTPCcalibTimeGain() | |
186 | :AliTPCcalibBase(), | |
187 | fHistGainTime(0), | |
188 | fGainVsTime(0), | |
189 | fHistDeDxTotal(0), | |
190 | fIntegrationTimeDeDx(0), | |
191 | fMIP(0), | |
f21b5f78 | 192 | fCutCrossRows(0), |
193 | fCutEtaWindow(0), | |
194 | fCutRequireITSrefit(0), | |
195 | fCutMaxDcaXY(0), | |
196 | fCutMaxDcaZ(0), | |
ed7b1997 | 197 | fMinMomentumMIP(0), |
198 | fMaxMomentumMIP(0), | |
199 | fAlephParameters(), | |
592a0c8f | 200 | fUseMax(0), |
489dce1b | 201 | fLowerTrunc(0), |
202 | fUpperTrunc(0), | |
203 | fUseShapeNorm(0), | |
204 | fUsePosNorm(0), | |
205 | fUsePadNorm(0), | |
592a0c8f | 206 | fUseCookAnalytical(0), |
d0b31f57 | 207 | fIsCosmic(0), |
208 | fLowMemoryConsumption(0) | |
489dce1b | 209 | { |
05c5cecd | 210 | // |
211 | // Default constructor | |
212 | // | |
263d803f | 213 | AliDebug(5,"Default Constructor"); |
489dce1b | 214 | } |
215 | ||
216 | ||
217 | AliTPCcalibTimeGain::AliTPCcalibTimeGain(const Text_t *name, const Text_t *title, UInt_t StartTime, UInt_t EndTime, Int_t deltaIntegrationTimeGain) | |
218 | :AliTPCcalibBase(), | |
219 | fHistGainTime(0), | |
220 | fGainVsTime(0), | |
221 | fHistDeDxTotal(0), | |
222 | fIntegrationTimeDeDx(0), | |
223 | fMIP(0), | |
f21b5f78 | 224 | fCutCrossRows(0), |
225 | fCutEtaWindow(0), | |
226 | fCutRequireITSrefit(0), | |
227 | fCutMaxDcaXY(0), | |
228 | fCutMaxDcaZ(0), | |
ed7b1997 | 229 | fMinMomentumMIP(0), |
230 | fMaxMomentumMIP(0), | |
231 | fAlephParameters(), | |
592a0c8f | 232 | fUseMax(0), |
489dce1b | 233 | fLowerTrunc(0), |
234 | fUpperTrunc(0), | |
235 | fUseShapeNorm(0), | |
236 | fUsePosNorm(0), | |
237 | fUsePadNorm(0), | |
592a0c8f | 238 | fUseCookAnalytical(0), |
d0b31f57 | 239 | fIsCosmic(0), |
240 | fLowMemoryConsumption(0) | |
3af3fbc4 | 241 | { |
05c5cecd | 242 | // |
243 | // No default constructor | |
244 | // | |
489dce1b | 245 | SetName(name); |
246 | SetTitle(title); | |
3af3fbc4 | 247 | |
263d803f | 248 | AliDebug(5,"Non Default Constructor"); |
3af3fbc4 | 249 | |
489dce1b | 250 | fIntegrationTimeDeDx = deltaIntegrationTimeGain; |
3af3fbc4 | 251 | |
489dce1b | 252 | Double_t deltaTime = EndTime - StartTime; |
253 | ||
3af3fbc4 | 254 | |
46e89793 | 255 | // 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 |
d0b31f57 | 256 | Int_t timeBins = TMath::Nint(deltaTime/deltaIntegrationTimeGain); |
2942f542 | 257 | Int_t binsGainTime[7] = {150, static_cast<Int_t>(timeBins), 4, 25, 200, 10000000, 20}; |
258 | Double_t xminGainTime[7] = {0.5, static_cast<Double_t>(StartTime), 0.5, 0, 0.1, -0.5, -1}; | |
259 | Double_t xmaxGainTime[7] = { 8, static_cast<Double_t>(EndTime), 4.5, 250, 50, 9999999.5, 1}; | |
46e89793 | 260 | fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx,time,type,driftlength,momenta,run number, eta;dEdx",7,binsGainTime,xminGainTime,xmaxGainTime); |
489dce1b | 261 | BinLogX(fHistGainTime, 4); |
262 | // | |
3af3fbc4 | 263 | fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,8); |
489dce1b | 264 | BinLogX(fHistDeDxTotal); |
265 | ||
f21b5f78 | 266 | |
267 | // default track selection cuts | |
268 | fCutCrossRows = 80; | |
269 | fCutEtaWindow = 0.8; | |
270 | fCutRequireITSrefit = kFALSE; | |
271 | fCutMaxDcaXY = 3.5; | |
272 | fCutMaxDcaZ = 25.; | |
273 | ||
ed7b1997 | 274 | // default values for MIP window selection |
275 | fMinMomentumMIP = 0.4; | |
276 | fMaxMomentumMIP = 0.6; | |
277 | fAlephParameters[0] = 0.07657; // the following parameters work for most of the periods and are therefore default | |
278 | fAlephParameters[1] = 10.6654; // but they can be overwritten in the train setup of cpass0 | |
279 | fAlephParameters[2] = 2.51466e-14; | |
280 | fAlephParameters[3] = 2.05379; | |
281 | fAlephParameters[4] = 1.84288; | |
282 | ||
489dce1b | 283 | // default values for dE/dx |
284 | fMIP = 50.; | |
592a0c8f | 285 | fUseMax = kTRUE; |
6facea76 | 286 | fLowerTrunc = 0.02; |
287 | fUpperTrunc = 0.6; | |
489dce1b | 288 | fUseShapeNorm = kTRUE; |
289 | fUsePosNorm = kFALSE; | |
290 | fUsePadNorm = kFALSE; | |
592a0c8f | 291 | fUseCookAnalytical = kFALSE; |
489dce1b | 292 | // |
293 | fIsCosmic = kTRUE; | |
3af3fbc4 | 294 | fLowMemoryConsumption = kTRUE; |
489dce1b | 295 | // |
296 | ||
3af3fbc4 | 297 | } |
489dce1b | 298 | |
299 | ||
300 | ||
301 | AliTPCcalibTimeGain::~AliTPCcalibTimeGain(){ | |
302 | // | |
05c5cecd | 303 | // Destructor |
489dce1b | 304 | // |
2cd9f718 | 305 | delete fHistGainTime; |
306 | delete fGainVsTime; | |
307 | delete fHistDeDxTotal; | |
489dce1b | 308 | } |
309 | ||
310 | ||
0efde530 | 311 | void AliTPCcalibTimeGain::Process(AliESDEvent *event) { |
489dce1b | 312 | // |
313 | // main track loop | |
314 | // | |
315 | if (!event) { | |
0efde530 | 316 | Printf("ERROR: ESD not available"); |
489dce1b | 317 | return; |
d0b31f57 | 318 | } |
0efde530 | 319 | AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); |
320 | if (!ESDfriend) { | |
d0c09227 | 321 | return; |
322 | } | |
0efde530 | 323 | if (ESDfriend->TestSkipBit()) return; |
d0c09227 | 324 | |
d0b31f57 | 325 | if (fIsCosmic) { // this should be removed at some point based on trigger mask !? |
326 | ProcessCosmicEvent(event); | |
327 | } else { | |
328 | ProcessBeamEvent(event); | |
329 | } | |
330 | ||
0efde530 | 331 | |
332 | ||
333 | ||
d0b31f57 | 334 | } |
335 | ||
336 | ||
0efde530 | 337 | void AliTPCcalibTimeGain::ProcessCosmicEvent(AliESDEvent *event) { |
05c5cecd | 338 | // |
339 | // Process in case of cosmic event | |
340 | // | |
0efde530 | 341 | AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); |
342 | if (!esdFriend) { | |
343 | Printf("ERROR: ESDfriend not available"); | |
489dce1b | 344 | return; |
345 | } | |
346 | // | |
347 | UInt_t time = event->GetTimeStamp(); | |
0efde530 | 348 | Int_t nFriendTracks = esdFriend->GetNumberOfTracks(); |
592a0c8f | 349 | Int_t runNumber = event->GetRunNumber(); |
489dce1b | 350 | // |
351 | // track loop | |
352 | // | |
30c0660a | 353 | for (Int_t i=0;i<nFriendTracks;++i) { |
489dce1b | 354 | |
0efde530 | 355 | AliESDtrack *track = event->GetTrack(i); |
489dce1b | 356 | if (!track) continue; |
0efde530 | 357 | AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i); |
358 | if (!friendTrack) continue; | |
359 | const AliExternalTrackParam * trackIn = track->GetInnerParam(); | |
360 | const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut(); | |
489dce1b | 361 | if (!trackIn) continue; |
362 | if (!trackOut) continue; | |
363 | ||
364 | // calculate necessary track parameters | |
489dce1b | 365 | Double_t meanP = trackIn->GetP(); |
366 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ()); | |
05c5cecd | 367 | Int_t nclsDeDx = track->GetTPCNcls(); |
489dce1b | 368 | |
489dce1b | 369 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors |
05c5cecd | 370 | if (nclsDeDx < 60) continue; |
489dce1b | 371 | if (TMath::Abs(trackIn->GetTgl()) > 1) continue; |
372 | if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue; | |
373 | ||
374 | // Get seeds | |
489dce1b | 375 | TObject *calibObject; |
376 | AliTPCseed *seed = 0; | |
377 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
378 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
379 | } | |
380 | ||
381 | if (seed) { | |
05c5cecd | 382 | Double_t tpcSignal = GetTPCdEdx(seed); |
383 | if (nclsDeDx > 100) fHistDeDxTotal->Fill(meanP, tpcSignal); | |
489dce1b | 384 | // |
d0b31f57 | 385 | if (fLowMemoryConsumption) { |
386 | if (meanP < 20) continue; | |
387 | meanP = 30; // set all momenta to one in order to save memory | |
489dce1b | 388 | } |
d0b31f57 | 389 | //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta |
2942f542 | 390 | Double_t vec[6] = {tpcSignal,static_cast<Double_t>(time),1,meanDrift,meanP,static_cast<Double_t>(runNumber)}; |
d0b31f57 | 391 | fHistGainTime->Fill(vec); |
392 | } | |
489dce1b | 393 | |
d0b31f57 | 394 | } |
489dce1b | 395 | |
d0b31f57 | 396 | } |
397 | ||
398 | ||
399 | ||
0efde530 | 400 | void AliTPCcalibTimeGain::ProcessBeamEvent(AliESDEvent *event) { |
05c5cecd | 401 | // |
402 | // Process in case of beam event | |
403 | // | |
0efde530 | 404 | AliESDfriend *esdFriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend")); |
405 | if (!esdFriend) { | |
406 | Printf("ERROR: ESDfriend not available"); | |
d0b31f57 | 407 | return; |
408 | } | |
409 | // | |
410 | UInt_t time = event->GetTimeStamp(); | |
0efde530 | 411 | Int_t nFriendTracks = esdFriend->GetNumberOfTracks(); |
592a0c8f | 412 | Int_t runNumber = event->GetRunNumber(); |
d0b31f57 | 413 | // |
414 | // track loop | |
415 | // | |
30c0660a | 416 | for (Int_t i=0;i<nFriendTracks;++i) { // begin track loop |
d0b31f57 | 417 | |
0efde530 | 418 | AliESDtrack *track = event->GetTrack(i); |
419 | if (!track) continue; | |
420 | AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i); | |
421 | if (!friendTrack) continue; | |
d0b31f57 | 422 | |
0efde530 | 423 | const AliExternalTrackParam * trackIn = track->GetInnerParam(); |
424 | const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut(); | |
d0b31f57 | 425 | if (!trackIn) continue; |
426 | if (!trackOut) continue; | |
427 | ||
428 | // calculate necessary track parameters | |
429 | Double_t meanP = trackIn->GetP(); | |
430 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ()); | |
f21b5f78 | 431 | Int_t nCrossedRows = track->GetTPCCrossedRows(); |
d0b31f57 | 432 | |
f21b5f78 | 433 | // |
d0b31f57 | 434 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors |
f21b5f78 | 435 | // fCutCrossRows = 80, fCutEtaWindow = 0.8, fCutRequireITSrefit, fCutMaxDcaXY = 3.5, fCutMaxDcaZ = 25 |
436 | // | |
437 | if (nCrossedRows < fCutCrossRows) continue; | |
438 | if (TMath::Abs(trackIn->Eta()) > fCutEtaWindow) continue; | |
439 | // | |
46e89793 | 440 | UInt_t status = track->GetStatus(); |
0efde530 | 441 | if ((status&AliESDtrack::kTPCrefit)==0) continue; |
442 | if ((status&AliESDtrack::kITSrefit)==0 && fCutRequireITSrefit) continue; // ITS cluster | |
f21b5f78 | 443 | // |
46e89793 | 444 | Float_t dca[2], cov[3]; |
445 | track->GetImpactParameters(dca,cov); | |
f21b5f78 | 446 | if (TMath::Abs(dca[0]) > fCutMaxDcaXY || TMath::Abs(dca[0]) < 0.0000001) continue; // cut in xy |
0efde530 | 447 | if (((status&AliESDtrack::kITSrefit) == 1 && TMath::Abs(dca[1]) > 3.) || TMath::Abs(dca[1]) > fCutMaxDcaZ ) continue; |
f21b5f78 | 448 | // |
46e89793 | 449 | Double_t eta = trackIn->Eta(); |
d0b31f57 | 450 | |
451 | // Get seeds | |
d0b31f57 | 452 | TObject *calibObject; |
453 | AliTPCseed *seed = 0; | |
454 | for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) { | |
455 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
456 | } | |
457 | ||
46e89793 | 458 | if (seed) { |
459 | Int_t particleCase = 0; | |
ed7b1997 | 460 | if (meanP < fMaxMomentumMIP && meanP > fMinMomentumMIP) particleCase = 2; // MIP pions |
b9ab8e40 | 461 | if (meanP < 0.57 && meanP > 0.56) particleCase = 3; // protons 1 |
462 | if (meanP < 0.66 && meanP > 0.65) particleCase = 4; // protons 2 | |
46e89793 | 463 | // |
464 | if (fLowMemoryConsumption && particleCase == 0) continue; | |
465 | // | |
882f5c06 | 466 | Double_t tpcSignal = GetTPCdEdx(seed); |
ed7b1997 | 467 | // |
468 | // flattens signal in MIP window | |
469 | // | |
bfa6f862 | 470 | if (particleCase == 2) { |
ed7b1997 | 471 | Float_t corrFactor = AliExternalTrackParam::BetheBlochAleph(meanP/0.13957, |
472 | fAlephParameters[0], | |
473 | fAlephParameters[1], | |
474 | fAlephParameters[2], | |
475 | fAlephParameters[3], | |
476 | fAlephParameters[4]); | |
477 | tpcSignal /= corrFactor; | |
478 | } | |
882f5c06 | 479 | fHistDeDxTotal->Fill(meanP, tpcSignal); |
480 | // | |
46e89793 | 481 | //dE/dx, time, type (1-muon cosmic,2-pion beam data, 3&4 protons), momenta, runNumner, eta |
2942f542 | 482 | Double_t vec[7] = {tpcSignal,static_cast<Double_t>(time),static_cast<Double_t>(particleCase),meanDrift,meanP,static_cast<Double_t>(runNumber), eta}; |
d0b31f57 | 483 | fHistGainTime->Fill(vec); |
489dce1b | 484 | } |
485 | ||
46e89793 | 486 | } // end track loop |
487 | // | |
488 | // V0 loop -- in beam events the cosmic part of the histogram is filled with GammaConversions | |
489 | // | |
490 | for(Int_t iv0 = 0; iv0 < event->GetNumberOfV0s(); iv0++) { | |
0efde530 | 491 | AliESDv0 * v0 = event->GetV0(iv0); |
46e89793 | 492 | if (!v0->GetOnFlyStatus()) continue; |
493 | if (v0->GetEffMass(0,0) > 0.02) continue; // select low inv. mass | |
494 | Double_t xyz[3]; | |
495 | v0->GetXYZ(xyz[0], xyz[1], xyz[2]); | |
496 | if (TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]) < 3 || TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]) > 30) continue; | |
497 | // | |
498 | // "loop over daughters" | |
499 | // | |
500 | for(Int_t idaughter = 0; idaughter < 2; idaughter++) { // daughter loop | |
501 | Int_t index = idaughter == 0 ? v0->GetPindex() : v0->GetNindex(); | |
0efde530 | 502 | AliESDtrack * trackP = event->GetTrack(index); |
503 | AliESDfriendTrack *friendTrackP = esdFriend->GetTrack(index); | |
46e89793 | 504 | if (!friendTrackP) continue; |
0efde530 | 505 | const AliExternalTrackParam * trackPIn = trackP->GetInnerParam(); |
506 | const AliExternalTrackParam * trackPOut = friendTrackP->GetTPCOut(); | |
46e89793 | 507 | if (!trackPIn) continue; |
508 | if (!trackPOut) continue; | |
509 | // calculate necessary track parameters | |
510 | Double_t meanP = trackPIn->GetP(); | |
511 | Double_t meanDrift = 250 - 0.5*TMath::Abs(trackPIn->GetZ() + trackPOut->GetZ()); | |
512 | Int_t nclsDeDx = trackP->GetTPCNcls(); | |
513 | // exclude tracks which do not look like primaries or are simply too short or on wrong sectors | |
514 | if (nclsDeDx < 60) continue; | |
515 | if (TMath::Abs(trackPIn->GetTgl()) > 1) continue; | |
516 | // | |
517 | TObject *calibObject; | |
518 | AliTPCseed *seed = 0; | |
519 | for (Int_t l=0;(calibObject=friendTrackP->GetCalibObject(l));++l) { | |
520 | if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break; | |
521 | } | |
522 | if (seed) { | |
523 | if (fLowMemoryConsumption) { | |
ed7b1997 | 524 | if (meanP > fMaxMomentumMIP || meanP < fMinMomentumMIP) continue; |
46e89793 | 525 | meanP = 0.45; // set all momenta to one in order to save memory |
526 | } | |
527 | Double_t tpcSignal = GetTPCdEdx(seed); | |
528 | //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta | |
2942f542 | 529 | Double_t vec[6] = {tpcSignal,static_cast<Double_t>(time),1,meanDrift,meanP,static_cast<Double_t>(runNumber)}; |
0efde530 | 530 | fHistGainTime->Fill(vec); |
46e89793 | 531 | } |
532 | } | |
533 | ||
489dce1b | 534 | } |
d0b31f57 | 535 | |
489dce1b | 536 | } |
537 | ||
538 | ||
592a0c8f | 539 | Float_t AliTPCcalibTimeGain::GetTPCdEdx(AliTPCseed * seed) { |
05c5cecd | 540 | // |
541 | // calculate tpc dEdx | |
542 | // | |
592a0c8f | 543 | Double_t signal = 0; |
544 | // | |
545 | if (!fUseCookAnalytical) { | |
546 | signal = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,fUseMax,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0); | |
547 | } else { | |
548 | signal = (1/fMIP)*seed->CookdEdxAnalytical(fLowerTrunc,fUpperTrunc,fUseMax); | |
549 | } | |
550 | // | |
551 | return signal; | |
552 | } | |
553 | ||
554 | ||
555 | void AliTPCcalibTimeGain::AnalyzeRun(Int_t minEntries) { | |
489dce1b | 556 | // |
05c5cecd | 557 | // Analyze results of calibration |
489dce1b | 558 | // |
489dce1b | 559 | if (fIsCosmic) { |
d0b31f57 | 560 | fHistGainTime->GetAxis(2)->SetRangeUser(0.51,1.49); // only cosmics |
561 | fHistGainTime->GetAxis(4)->SetRangeUser(20,100); // only Fermi-Plateau muons | |
489dce1b | 562 | } else { |
d0b31f57 | 563 | fHistGainTime->GetAxis(2)->SetRangeUser(1.51,2.49); // only beam data |
564 | fHistGainTime->GetAxis(4)->SetRangeUser(0.39,0.51); // only MIP pions | |
489dce1b | 565 | } |
489dce1b | 566 | // |
592a0c8f | 567 | fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,minEntries,10); |
489dce1b | 568 | // |
569 | return; | |
570 | } | |
571 | ||
572 | ||
592a0c8f | 573 | TGraphErrors * AliTPCcalibTimeGain::GetGraphGainVsTime(Int_t runNumber, Int_t minEntries) { |
574 | // | |
05c5cecd | 575 | // Analyze results and get the graph |
592a0c8f | 576 | // |
577 | if (runNumber == 0) { | |
578 | if (!fGainVsTime) { | |
579 | AnalyzeRun(minEntries); | |
580 | } | |
581 | } else { | |
582 | // 1st check if the current run was cosmic or beam event | |
583 | fHistGainTime->GetAxis(5)->SetRangeUser(runNumber,runNumber); | |
584 | AnalyzeRun(minEntries); | |
585 | } | |
586 | if (fGainVsTime->GetN() == 0) return 0; | |
587 | return fGainVsTime; | |
588 | } | |
589 | ||
489dce1b | 590 | Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) { |
05c5cecd | 591 | // |
592 | // merge component | |
593 | // | |
489dce1b | 594 | TIterator* iter = li->MakeIterator(); |
595 | AliTPCcalibTimeGain* cal = 0; | |
596 | ||
597 | while ((cal = (AliTPCcalibTimeGain*)iter->Next())) { | |
598 | if (!cal->InheritsFrom(AliTPCcalibTimeGain::Class())) { | |
599 | Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName()); | |
600 | return -1; | |
601 | } | |
602 | ||
603 | // add histograms here... | |
afa85729 | 604 | if (cal->GetHistGainTime() && fHistGainTime ) |
605 | { | |
606 | if ((fHistGainTime->GetEntries() + cal->GetHistGainTime()->GetEntries()) < fgMergeEntriesCut) | |
607 | { | |
608 | //AliInfo(Form("fHistGainTime has %.0f tracks, going to add %.0f\n",fHistGainTime->GetEntries(),cal->GetHistGainTime()->GetEntries())); | |
609 | fHistGainTime->Add(cal->GetHistGainTime()); | |
610 | } | |
611 | else | |
612 | { | |
613 | AliInfo(Form("fHistGainTime full (has %.0f merged tracks, max allowed: %.0f)",fHistGainTime->GetEntries(),fgMergeEntriesCut)); | |
614 | } | |
615 | } | |
616 | ||
489dce1b | 617 | if (cal->GetHistDeDxTotal()) fHistDeDxTotal->Add(cal->GetHistDeDxTotal()); |
618 | ||
619 | } | |
19a6e205 | 620 | delete iter; |
489dce1b | 621 | return 0; |
622 | ||
623 | } | |
624 | ||
625 | ||
592a0c8f | 626 | AliSplineFit * AliTPCcalibTimeGain::MakeSplineFit(TGraphErrors * graph) { |
627 | // | |
05c5cecd | 628 | // make spline fit of gain |
592a0c8f | 629 | // |
630 | AliSplineFit *fit = new AliSplineFit(); | |
631 | fit->SetGraph(graph); | |
632 | fit->SetMinPoints(graph->GetN()+1); | |
633 | fit->InitKnots(graph,2,0,0.001); | |
634 | fit->SplineFit(0); | |
635 | return fit; | |
636 | ||
637 | } | |
638 | ||
489dce1b | 639 | |
3af3fbc4 | 640 | |
e55e5512 | 641 | TGraphErrors * AliTPCcalibTimeGain::GetGraphAttachment(Int_t minEntries, Int_t nmaxBin, Float_t /*fracLow*/, Float_t /*fracUp*/) { |
3af3fbc4 | 642 | // |
643 | // For each time bin the driftlength-dependence of the signal is fitted. | |
644 | // | |
645 | TH3D * hist = fHistGainTime->Projection(1, 0, 3); | |
646 | Double_t *xvec = new Double_t[hist->GetNbinsX()]; | |
647 | Double_t *yvec = new Double_t[hist->GetNbinsX()]; | |
648 | Double_t *xerr = new Double_t[hist->GetNbinsX()]; | |
649 | Double_t *yerr = new Double_t[hist->GetNbinsX()]; | |
650 | Int_t counter = 0; | |
651 | TH2D * projectionHist = 0x0; | |
652 | // | |
653 | for(Int_t i=1; i < hist->GetNbinsX(); i++) { | |
654 | Int_t nsum=0; | |
655 | Int_t imin = i; | |
656 | Int_t imax = i; | |
657 | for (Int_t idelta=0; idelta<nmaxBin; idelta++){ | |
658 | // | |
659 | imin = TMath::Max(i-idelta,1); | |
660 | imax = TMath::Min(i+idelta,hist->GetNbinsX()); | |
661 | nsum = TMath::Nint(hist->Integral(imin,imax,1,hist->GetNbinsY()-1,1,hist->GetNbinsZ()-1)); | |
662 | if (nsum==0) break; | |
663 | if (nsum>minEntries) break; | |
664 | } | |
665 | if (nsum<minEntries) continue; | |
666 | // | |
667 | hist->GetXaxis()->SetRange(imin,imax); | |
668 | projectionHist = (TH2D*)hist->Project3D("yzNUFNOF"); | |
669 | // | |
670 | TObjArray arr; | |
671 | projectionHist->FitSlicesY(0,2, projectionHist->GetNbinsX()-2,0,"QNR",&arr); | |
672 | TH1D * histAttach = (TH1D*)arr.At(1); | |
673 | TF1 pol1("polynom1","pol1",10,240); | |
674 | histAttach->Fit(&pol1,"QNR"); | |
675 | xvec[counter] = 0.5*(hist->GetXaxis()->GetBinCenter(imin)+hist->GetXaxis()->GetBinCenter(imax)); | |
676 | yvec[counter] = pol1.GetParameter(1)/pol1.GetParameter(0); | |
677 | xerr[counter] = 0; | |
678 | yerr[counter] = pol1.GetParError(1)/pol1.GetParameter(0); | |
679 | counter++; | |
680 | // | |
681 | delete projectionHist; | |
682 | } | |
683 | ||
684 | TGraphErrors * graphErrors = new TGraphErrors(counter, xvec, yvec, xerr, yerr); | |
685 | delete [] xvec; | |
686 | delete [] yvec; | |
687 | delete [] xerr; | |
688 | delete [] yerr; | |
689 | delete hist; | |
690 | return graphErrors; | |
691 | ||
692 | } | |
693 | ||
694 | ||
695 | ||
489dce1b | 696 | void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) { |
05c5cecd | 697 | // |
489dce1b | 698 | // Method for the correct logarithmic binning of histograms |
05c5cecd | 699 | // |
489dce1b | 700 | TAxis *axis = h->GetAxis(axisDim); |
701 | int bins = axis->GetNbins(); | |
702 | ||
703 | Double_t from = axis->GetXmin(); | |
704 | Double_t to = axis->GetXmax(); | |
05c5cecd | 705 | Double_t *newBins = new Double_t[bins + 1]; |
489dce1b | 706 | |
05c5cecd | 707 | newBins[0] = from; |
489dce1b | 708 | Double_t factor = pow(to/from, 1./bins); |
709 | ||
710 | for (int i = 1; i <= bins; i++) { | |
05c5cecd | 711 | newBins[i] = factor * newBins[i-1]; |
489dce1b | 712 | } |
05c5cecd | 713 | axis->Set(bins, newBins); |
4ce766eb | 714 | delete[] newBins; |
489dce1b | 715 | |
716 | } | |
717 | ||
718 | ||
719 | void AliTPCcalibTimeGain::BinLogX(TH1 *h) { | |
05c5cecd | 720 | // |
489dce1b | 721 | // Method for the correct logarithmic binning of histograms |
05c5cecd | 722 | // |
489dce1b | 723 | TAxis *axis = h->GetXaxis(); |
724 | int bins = axis->GetNbins(); | |
725 | ||
726 | Double_t from = axis->GetXmin(); | |
727 | Double_t to = axis->GetXmax(); | |
05c5cecd | 728 | Double_t *newBins = new Double_t[bins + 1]; |
489dce1b | 729 | |
05c5cecd | 730 | newBins[0] = from; |
489dce1b | 731 | Double_t factor = pow(to/from, 1./bins); |
732 | ||
733 | for (int i = 1; i <= bins; i++) { | |
05c5cecd | 734 | newBins[i] = factor * newBins[i-1]; |
489dce1b | 735 | } |
05c5cecd | 736 | axis->Set(bins, newBins); |
4ce766eb | 737 | delete[] newBins; |
489dce1b | 738 | |
739 | } | |
740 | ||
741 | ||
742 | ||
743 | void AliTPCcalibTimeGain::CalculateBetheAlephParams(TH2F *hist, Double_t * ini) { | |
05c5cecd | 744 | // |
745 | // Fit the bethe bloch params | |
746 | // | |
489dce1b | 747 | //{0.0762*MIP,10.632,1.34e-05,1.863,1.948} |
748 | const Double_t sigma = 0.06; | |
749 | ||
d0b31f57 | 750 | 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 | 751 | BinLogX(histBG); |
752 | ||
d0b31f57 | 753 | TF1 *foElectron = new TF1("foElectron", "AliExternalTrackParam::BetheBlochAleph(x/0.000511,[0],[1],[2],[3],[4])",0.01,100); |
489dce1b | 754 | TF1 *foMuon = new TF1("foMuon", "AliExternalTrackParam::BetheBlochAleph(x/0.1056,[0],[1],[2],[3],[4])",0.01,100); |
755 | TF1 *foPion = new TF1("foPion", "AliExternalTrackParam::BetheBlochAleph(x/0.138,[0],[1],[2],[3],[4])",0.01,100); | |
756 | TF1 *foKaon = new TF1("foKaon", "AliExternalTrackParam::BetheBlochAleph(x/0.498,[0],[1],[2],[3],[4])",0.01,100); | |
757 | TF1 *foProton = new TF1("foProton", "AliExternalTrackParam::BetheBlochAleph(x/0.938,[0],[1],[2],[3],[4])",0.01,100); | |
758 | foElectron->SetParameters(ini); | |
759 | foMuon->SetParameters(ini); | |
760 | foPion->SetParameters(ini); | |
761 | foKaon->SetParameters(ini); | |
762 | foProton->SetParameters(ini); | |
763 | ||
05c5cecd | 764 | TCanvas *canvCheck1 = new TCanvas(); |
489dce1b | 765 | hist->Draw("colz"); |
766 | foElectron->Draw("same"); | |
767 | foMuon->Draw("same"); | |
768 | foPion->Draw("same"); | |
769 | foKaon->Draw("same"); | |
770 | foProton->Draw("same"); | |
771 | ||
772 | // Loop over all points of the input histogram | |
773 | ||
774 | for(Int_t i=1; i < hist->GetNbinsX(); i++) { | |
775 | Double_t x = hist->GetXaxis()->GetBinCenter(i); | |
776 | for(Int_t j=1; j < hist->GetNbinsY(); j++) { | |
777 | Long64_t n = hist->GetBin(i, j); | |
778 | Double_t y = hist->GetYaxis()->GetBinCenter(j); | |
779 | Double_t entries = hist->GetBinContent(n); | |
780 | Double_t mass = 0; | |
781 | ||
782 | // 1. identify protons | |
783 | mass = 0.938; | |
784 | if (TMath::Abs(y - foProton->Eval(x))/foProton->Eval(x) < 4*sigma && x < 0.65 ) { | |
785 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
786 | } | |
787 | ||
788 | // 2. identify electrons | |
789 | mass = 0.000511; | |
790 | if (fIsCosmic) { | |
791 | if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 4*sigma && (x>0.25&&x<0.7) && fIsCosmic) { | |
792 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
793 | } | |
794 | } else { | |
d0b31f57 | 795 | 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 | 796 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); |
797 | } | |
798 | } | |
799 | ||
800 | // 3. identify either muons or pions depending on cosmic or not | |
801 | if (fIsCosmic) { | |
802 | mass = 0.1056; | |
803 | if (TMath::Abs(y - foMuon->Eval(x))/foMuon->Eval(x) < 4*sigma && x > 0.25 && x < 100 ) { | |
804 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
805 | } | |
806 | } else { | |
807 | mass = 0.1396; | |
808 | if (TMath::Abs(y - foPion->Eval(x))/foPion->Eval(x) < 4*sigma && x > 0.15 && x < 2) { | |
809 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
810 | } | |
811 | } | |
812 | ||
813 | // 4. for pp also Kaons must be included | |
814 | if (!fIsCosmic) { | |
815 | mass = 0.4936; | |
816 | if (TMath::Abs(y - foKaon->Eval(x))/foKaon->Eval(x) < 4*sigma && x > 0.2 && x < 0.3 ) { | |
817 | for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y); | |
818 | } | |
819 | } | |
820 | } | |
821 | } | |
822 | ||
823 | // Fit Aleph-Parameters to the obtained profile | |
824 | TF1 * funcAlephD = new TF1("AlephParametrizationD", "AliExternalTrackParam::BetheBlochAleph(x,[0],[1],[2],[3],[4])",0.3,10000); | |
825 | funcAlephD->SetParameters(ini); | |
826 | ||
05c5cecd | 827 | TCanvas *canvCheck2 = new TCanvas(); |
489dce1b | 828 | histBG->Draw(); |
829 | ||
830 | //FitSlices | |
831 | TObjArray * arr = new TObjArray(); | |
832 | histBG->FitSlicesY(0,0,-1,0,"QN",arr); | |
833 | TH1D * fitMean = (TH1D*) arr->At(1); | |
834 | fitMean->Draw("same"); | |
835 | ||
836 | funcAlephD->SetParLimits(2,1e-3,1e-7); | |
837 | funcAlephD->SetParLimits(3,0.5,3.5); | |
838 | funcAlephD->SetParLimits(4,0.5,3.5); | |
839 | fitMean->Fit(funcAlephD, "QNR"); | |
840 | funcAlephD->Draw("same"); | |
841 | ||
842 | for(Int_t i=0;i<5;i++) ini[i] = funcAlephD->GetParameter(i); | |
843 | ||
844 | foElectron->SetParameters(ini); | |
845 | foMuon->SetParameters(ini); | |
846 | foPion->SetParameters(ini); | |
847 | foKaon->SetParameters(ini); | |
848 | foProton->SetParameters(ini); | |
849 | ||
05c5cecd | 850 | TCanvas *canvCheck3 = new TCanvas(); |
489dce1b | 851 | hist->Draw("colz"); |
852 | foElectron->Draw("same"); | |
853 | foMuon->Draw("same"); | |
854 | foPion->Draw("same"); | |
855 | foKaon->Draw("same"); | |
856 | foProton->Draw("same"); | |
857 | ||
05c5cecd | 858 | canvCheck1->Print(); |
859 | canvCheck2->Print(); | |
860 | canvCheck3->Print(); | |
489dce1b | 861 | |
862 | return; | |
863 | ||
864 | ||
865 | } |