Line data Source code
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 "AliTPCreco.h"
159 : #include "AliESDVertex.h"
160 : #include "AliESDEvent.h"
161 : #include "AliESDfriend.h"
162 : #include "AliESDInputHandler.h"
163 : #include "AliAnalysisManager.h"
164 :
165 : #include "AliTracker.h"
166 : #include "AliMagF.h"
167 : #include "AliTPCCalROC.h"
168 : #include "AliESDv0.h"
169 :
170 : #include "AliLog.h"
171 :
172 : #include "AliTPCcalibTimeGain.h"
173 :
174 : #include "TTreeStream.h"
175 : #include "AliTPCTracklet.h"
176 : #include "TTimeStamp.h"
177 : #include "AliTPCcalibDB.h"
178 : #include "AliTPCcalibLaser.h"
179 : #include "AliDCSSensorArray.h"
180 : #include "AliDCSSensor.h"
181 : #include "AliTPCTransform.h"
182 :
183 6 : ClassImp(AliTPCcalibTimeGain)
184 :
185 : Double_t AliTPCcalibTimeGain::fgMergeEntriesCut=10000000.;
186 :
187 : AliTPCcalibTimeGain::AliTPCcalibTimeGain()
188 0 : :AliTPCcalibBase(),
189 0 : fHistGainTime(0),
190 0 : fGainVsTime(0),
191 0 : fHistDeDxTotal(0),
192 0 : fIntegrationTimeDeDx(0),
193 0 : fMIP(0),
194 0 : fCutCrossRows(0),
195 0 : fCutEtaWindow(0),
196 0 : fCutRequireITSrefit(0),
197 0 : fCutMaxDcaXY(0),
198 0 : fCutMaxDcaZ(0),
199 0 : fMinMomentumMIP(0),
200 0 : fMaxMomentumMIP(0),
201 0 : fAlephParameters(),
202 0 : fUseMax(0),
203 0 : fLowerTrunc(0),
204 0 : fUpperTrunc(0),
205 0 : fUseShapeNorm(0),
206 0 : fUsePosNorm(0),
207 0 : fUsePadNorm(0),
208 0 : fUseCookAnalytical(0),
209 0 : fIsCosmic(0),
210 0 : fLowMemoryConsumption(0)
211 0 : {
212 : //
213 : // Default constructor
214 : //
215 0 : AliDebug(5,"Default Constructor");
216 0 : }
217 :
218 :
219 : AliTPCcalibTimeGain::AliTPCcalibTimeGain(const Text_t *name, const Text_t *title, UInt_t StartTime, UInt_t EndTime, Int_t deltaIntegrationTimeGain)
220 0 : :AliTPCcalibBase(),
221 0 : fHistGainTime(0),
222 0 : fGainVsTime(0),
223 0 : fHistDeDxTotal(0),
224 0 : fIntegrationTimeDeDx(0),
225 0 : fMIP(0),
226 0 : fCutCrossRows(0),
227 0 : fCutEtaWindow(0),
228 0 : fCutRequireITSrefit(0),
229 0 : fCutMaxDcaXY(0),
230 0 : fCutMaxDcaZ(0),
231 0 : fMinMomentumMIP(0),
232 0 : fMaxMomentumMIP(0),
233 0 : fAlephParameters(),
234 0 : fUseMax(0),
235 0 : fLowerTrunc(0),
236 0 : fUpperTrunc(0),
237 0 : fUseShapeNorm(0),
238 0 : fUsePosNorm(0),
239 0 : fUsePadNorm(0),
240 0 : fUseCookAnalytical(0),
241 0 : fIsCosmic(0),
242 0 : fLowMemoryConsumption(0)
243 0 : {
244 : //
245 : // No default constructor
246 : //
247 0 : SetName(name);
248 0 : SetTitle(title);
249 :
250 0 : AliDebug(5,"Non Default Constructor");
251 :
252 0 : fIntegrationTimeDeDx = deltaIntegrationTimeGain;
253 :
254 0 : Double_t deltaTime = EndTime - StartTime;
255 :
256 :
257 : // 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
258 0 : Int_t timeBins = TMath::Nint(deltaTime/deltaIntegrationTimeGain);
259 0 : Int_t binsGainTime[7] = {150, static_cast<Int_t>(timeBins), 4, 25, 200, 10000000, 20};
260 0 : Double_t xminGainTime[7] = {0.5, static_cast<Double_t>(StartTime), 0.5, 0, 0.1, -0.5, -1};
261 0 : Double_t xmaxGainTime[7] = { 8, static_cast<Double_t>(EndTime), 4.5, 250, 50, 9999999.5, 1};
262 0 : fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx,time,type,driftlength,momenta,run number, eta;dEdx",7,binsGainTime,xminGainTime,xmaxGainTime);
263 0 : BinLogX(fHistGainTime, 4);
264 : //
265 0 : fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,8);
266 0 : BinLogX(fHistDeDxTotal);
267 :
268 :
269 : // default track selection cuts
270 0 : fCutCrossRows = 80;
271 0 : fCutEtaWindow = 0.8;
272 0 : fCutRequireITSrefit = kFALSE;
273 0 : fCutMaxDcaXY = 3.5;
274 0 : fCutMaxDcaZ = 25.;
275 :
276 : // default values for MIP window selection
277 0 : fMinMomentumMIP = 0.4;
278 0 : fMaxMomentumMIP = 0.6;
279 0 : fAlephParameters[0] = 0.07657; // the following parameters work for most of the periods and are therefore default
280 0 : fAlephParameters[1] = 10.6654; // but they can be overwritten in the train setup of cpass0
281 0 : fAlephParameters[2] = 2.51466e-14;
282 0 : fAlephParameters[3] = 2.05379;
283 0 : fAlephParameters[4] = 1.84288;
284 :
285 : // default values for dE/dx
286 0 : fMIP = 50.;
287 0 : fUseMax = kTRUE;
288 0 : fLowerTrunc = 0.02;
289 0 : fUpperTrunc = 0.6;
290 0 : fUseShapeNorm = kTRUE;
291 0 : fUsePosNorm = kFALSE;
292 0 : fUsePadNorm = kFALSE;
293 0 : fUseCookAnalytical = kFALSE;
294 : //
295 0 : fIsCosmic = kTRUE;
296 0 : fLowMemoryConsumption = kTRUE;
297 : //
298 :
299 0 : }
300 :
301 :
302 :
303 0 : AliTPCcalibTimeGain::~AliTPCcalibTimeGain(){
304 : //
305 : // Destructor
306 : //
307 0 : delete fHistGainTime;
308 0 : delete fGainVsTime;
309 0 : delete fHistDeDxTotal;
310 0 : }
311 :
312 :
313 : void AliTPCcalibTimeGain::Process(AliESDEvent *event) {
314 : //
315 : // main track loop
316 : //
317 0 : if (!event) {
318 0 : Printf("ERROR: ESD not available");
319 0 : return;
320 : }
321 0 : AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
322 0 : if (!ESDfriend) {
323 0 : return;
324 : }
325 0 : if (ESDfriend->TestSkipBit()) return;
326 :
327 : // CookdEdxAnalytical requires the time stamp in AliTPCTransform to be set
328 0 : AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform() ;
329 0 : transform->SetCurrentRun(fRun);
330 0 : transform->SetCurrentTimeStamp((UInt_t)fTime);
331 :
332 0 : if (fIsCosmic) { // this should be removed at some point based on trigger mask !?
333 0 : ProcessCosmicEvent(event);
334 0 : } else {
335 0 : ProcessBeamEvent(event);
336 : }
337 :
338 :
339 :
340 :
341 0 : }
342 :
343 :
344 : void AliTPCcalibTimeGain::ProcessCosmicEvent(AliESDEvent *event) {
345 : //
346 : // Process in case of cosmic event
347 : //
348 0 : if (!event->FindListObject("AliESDfriend")) {
349 0 : Printf("ERROR: ESDfriend not available");
350 0 : return;
351 : }
352 : //
353 0 : UInt_t time = event->GetTimeStamp();
354 0 : Int_t nTracks = event->GetNumberOfTracks();
355 0 : Int_t runNumber = event->GetRunNumber();
356 : //
357 : // track loop
358 : //
359 0 : for (Int_t i=0;i<nTracks;++i) {
360 :
361 0 : AliESDtrack *track = event->GetTrack(i);
362 0 : if (!track) continue;
363 0 : AliESDfriendTrack *friendTrack = (AliESDfriendTrack*)track->GetFriendTrack();
364 0 : if (!friendTrack) continue;
365 0 : const AliExternalTrackParam * trackIn = track->GetInnerParam();
366 0 : const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut();
367 0 : if (!trackIn) continue;
368 0 : if (!trackOut) continue;
369 :
370 : // calculate necessary track parameters
371 0 : Double_t meanP = trackIn->GetP();
372 0 : Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ());
373 0 : Int_t nclsDeDx = track->GetTPCNcls();
374 :
375 : // exclude tracks which do not look like primaries or are simply too short or on wrong sectors
376 0 : if (nclsDeDx < 60) continue;
377 0 : if (TMath::Abs(trackIn->GetTgl()) > 1) continue;
378 0 : if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue;
379 :
380 : // Get seeds
381 : TObject *calibObject;
382 : AliTPCseed *seed = 0;
383 0 : for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
384 0 : if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
385 : }
386 :
387 0 : if (seed) {
388 0 : Double_t tpcSignal = GetTPCdEdx(seed);
389 0 : if (nclsDeDx > 100) fHistDeDxTotal->Fill(meanP, tpcSignal);
390 : //
391 0 : if (fLowMemoryConsumption) {
392 0 : if (meanP < 20) continue;
393 : meanP = 30; // set all momenta to one in order to save memory
394 0 : }
395 : //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta
396 0 : Double_t vec[6] = {tpcSignal,static_cast<Double_t>(time),1,meanDrift,meanP,static_cast<Double_t>(runNumber)};
397 0 : fHistGainTime->Fill(vec);
398 0 : }
399 :
400 0 : }
401 :
402 0 : }
403 :
404 :
405 :
406 : void AliTPCcalibTimeGain::ProcessBeamEvent(AliESDEvent *event) {
407 : //
408 : // Process in case of beam event
409 : //
410 0 : if (!event->FindListObject("AliESDfriend")) {
411 0 : Printf("ERROR: ESDfriend not available");
412 0 : return;
413 : }
414 : //
415 0 : UInt_t time = event->GetTimeStamp();
416 0 : Int_t nTracks = event->GetNumberOfTracks();
417 0 : Int_t runNumber = event->GetRunNumber();
418 : //
419 : // track loop
420 : //
421 0 : for (Int_t i=0;i<nTracks;++i) { // begin track loop
422 :
423 0 : AliESDtrack *track = event->GetTrack(i);
424 0 : if (!track) continue;
425 0 : AliESDfriendTrack *friendTrack = (AliESDfriendTrack*)track->GetFriendTrack();
426 0 : if (!friendTrack) continue;
427 :
428 0 : const AliExternalTrackParam * trackIn = track->GetInnerParam();
429 0 : const AliExternalTrackParam * trackOut = friendTrack->GetTPCOut();
430 0 : if (!trackIn) continue;
431 0 : if (!trackOut) continue;
432 :
433 : // calculate necessary track parameters
434 0 : Double_t meanP = trackIn->GetP();
435 0 : Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ());
436 0 : Int_t nCrossedRows = track->GetTPCCrossedRows();
437 :
438 : //
439 : // exclude tracks which do not look like primaries or are simply too short or on wrong sectors
440 : // fCutCrossRows = 80, fCutEtaWindow = 0.8, fCutRequireITSrefit, fCutMaxDcaXY = 3.5, fCutMaxDcaZ = 25
441 : //
442 0 : if (nCrossedRows < fCutCrossRows) continue;
443 0 : if (TMath::Abs(trackIn->Eta()) > fCutEtaWindow) continue;
444 : //
445 0 : UInt_t status = track->GetStatus();
446 0 : if ((status&AliESDtrack::kTPCrefit)==0) continue;
447 0 : if ((status&AliESDtrack::kITSrefit)==0 && fCutRequireITSrefit) continue; // ITS cluster
448 : //
449 0 : Float_t dca[2], cov[3];
450 0 : track->GetImpactParameters(dca,cov);
451 0 : if (TMath::Abs(dca[0]) > fCutMaxDcaXY || TMath::Abs(dca[0]) < 0.0000001) continue; // cut in xy
452 0 : if (((status&AliESDtrack::kITSrefit) == 1 && TMath::Abs(dca[1]) > 3.) || TMath::Abs(dca[1]) > fCutMaxDcaZ ) continue;
453 : //
454 0 : Double_t eta = trackIn->Eta();
455 :
456 : // Get seeds
457 : TObject *calibObject;
458 : AliTPCseed *seed = 0;
459 0 : for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
460 0 : if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
461 : }
462 :
463 0 : if (seed) {
464 : Int_t particleCase = 0;
465 0 : if (meanP < fMaxMomentumMIP && meanP > fMinMomentumMIP) particleCase = 2; // MIP pions
466 0 : if (meanP < 0.57 && meanP > 0.56) particleCase = 3; // protons 1
467 0 : if (meanP < 0.66 && meanP > 0.65) particleCase = 4; // protons 2
468 : //
469 0 : if (fLowMemoryConsumption && particleCase == 0) continue;
470 : //
471 0 : Double_t tpcSignal = GetTPCdEdx(seed);
472 : //
473 : // flattens signal in MIP window
474 : //
475 0 : if (particleCase == 2) {
476 0 : Float_t corrFactor = AliExternalTrackParam::BetheBlochAleph(meanP/0.13957,
477 0 : fAlephParameters[0],
478 0 : fAlephParameters[1],
479 0 : fAlephParameters[2],
480 0 : fAlephParameters[3],
481 0 : fAlephParameters[4]);
482 0 : tpcSignal /= corrFactor;
483 0 : }
484 0 : fHistDeDxTotal->Fill(meanP, tpcSignal);
485 : //
486 : //dE/dx, time, type (1-muon cosmic,2-pion beam data, 3&4 protons), momenta, runNumner, eta
487 0 : Double_t vec[7] = {tpcSignal,static_cast<Double_t>(time),static_cast<Double_t>(particleCase),meanDrift,meanP,static_cast<Double_t>(runNumber), eta};
488 0 : fHistGainTime->Fill(vec);
489 0 : }
490 :
491 0 : } // end track loop
492 : //
493 : // V0 loop -- in beam events the cosmic part of the histogram is filled with GammaConversions
494 : //
495 0 : for(Int_t iv0 = 0; iv0 < event->GetNumberOfV0s(); iv0++) {
496 0 : AliESDv0 * v0 = event->GetV0(iv0);
497 0 : if (!v0->GetOnFlyStatus()) continue;
498 0 : if (v0->GetEffMass(0,0) > 0.02) continue; // select low inv. mass
499 0 : Double_t xyz[3];
500 0 : v0->GetXYZ(xyz[0], xyz[1], xyz[2]);
501 0 : if (TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]) < 3 || TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]) > 30) continue;
502 : //
503 : // "loop over daughters"
504 : //
505 0 : for(Int_t idaughter = 0; idaughter < 2; idaughter++) { // daughter loop
506 0 : Int_t index = idaughter == 0 ? v0->GetPindex() : v0->GetNindex();
507 0 : AliESDtrack * trackP = event->GetTrack(index);
508 0 : AliESDfriendTrack *friendTrackP = (AliESDfriendTrack*)trackP->GetFriendTrack();
509 0 : if (!friendTrackP) continue;
510 0 : const AliExternalTrackParam * trackPIn = trackP->GetInnerParam();
511 0 : const AliExternalTrackParam * trackPOut = friendTrackP->GetTPCOut();
512 0 : if (!trackPIn) continue;
513 0 : if (!trackPOut) continue;
514 : // calculate necessary track parameters
515 0 : Double_t meanP = trackPIn->GetP();
516 0 : Double_t meanDrift = 250 - 0.5*TMath::Abs(trackPIn->GetZ() + trackPOut->GetZ());
517 0 : Int_t nclsDeDx = trackP->GetTPCNcls();
518 : // exclude tracks which do not look like primaries or are simply too short or on wrong sectors
519 0 : if (nclsDeDx < 60) continue;
520 0 : if (TMath::Abs(trackPIn->GetTgl()) > 1) continue;
521 : //
522 : TObject *calibObject;
523 : AliTPCseed *seed = 0;
524 0 : for (Int_t l=0;(calibObject=friendTrackP->GetCalibObject(l));++l) {
525 0 : if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
526 : }
527 0 : if (seed) {
528 0 : if (fLowMemoryConsumption) {
529 0 : if (meanP > fMaxMomentumMIP || meanP < fMinMomentumMIP) continue;
530 : meanP = 0.45; // set all momenta to one in order to save memory
531 0 : }
532 0 : Double_t tpcSignal = GetTPCdEdx(seed);
533 : //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta
534 0 : Double_t vec[6] = {tpcSignal,static_cast<Double_t>(time),1,meanDrift,meanP,static_cast<Double_t>(runNumber)};
535 0 : fHistGainTime->Fill(vec);
536 0 : }
537 0 : }
538 :
539 0 : }
540 :
541 0 : }
542 :
543 :
544 : Float_t AliTPCcalibTimeGain::GetTPCdEdx(AliTPCseed * seed) {
545 : //
546 : // calculate tpc dEdx
547 : //
548 : Double_t signal = 0;
549 : //
550 0 : if (!fUseCookAnalytical) {
551 0 : signal = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,fUseMax,0,kMaxRow,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0);
552 0 : } else {
553 0 : signal = (1/fMIP)*seed->CookdEdxAnalytical(fLowerTrunc,fUpperTrunc,fUseMax);
554 : }
555 : //
556 0 : return signal;
557 : }
558 :
559 :
560 : void AliTPCcalibTimeGain::AnalyzeRun(Int_t minEntries) {
561 : //
562 : // Analyze results of calibration
563 : //
564 0 : if (fIsCosmic) {
565 0 : fHistGainTime->GetAxis(2)->SetRangeUser(0.51,1.49); // only cosmics
566 0 : fHistGainTime->GetAxis(4)->SetRangeUser(20,100); // only Fermi-Plateau muons
567 0 : } else {
568 0 : fHistGainTime->GetAxis(2)->SetRangeUser(1.51,2.49); // only beam data
569 0 : fHistGainTime->GetAxis(4)->SetRangeUser(0.39,0.51); // only MIP pions
570 : }
571 : //
572 0 : fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,minEntries,10);
573 : //
574 0 : return;
575 : }
576 :
577 :
578 : TGraphErrors * AliTPCcalibTimeGain::GetGraphGainVsTime(Int_t runNumber, Int_t minEntries) {
579 : //
580 : // Analyze results and get the graph
581 : //
582 0 : if (runNumber == 0) {
583 0 : if (!fGainVsTime) {
584 0 : AnalyzeRun(minEntries);
585 0 : }
586 : } else {
587 : // 1st check if the current run was cosmic or beam event
588 0 : fHistGainTime->GetAxis(5)->SetRangeUser(runNumber,runNumber);
589 0 : AnalyzeRun(minEntries);
590 : }
591 0 : if (fGainVsTime->GetN() == 0) return 0;
592 0 : return fGainVsTime;
593 0 : }
594 :
595 : Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) {
596 : //
597 : // merge component
598 : //
599 0 : TIterator* iter = li->MakeIterator();
600 : AliTPCcalibTimeGain* cal = 0;
601 :
602 0 : while ((cal = (AliTPCcalibTimeGain*)iter->Next())) {
603 0 : if (!cal->InheritsFrom(AliTPCcalibTimeGain::Class())) {
604 0 : Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName());
605 0 : return -1;
606 : }
607 :
608 : // add histograms here...
609 0 : if (cal->GetHistGainTime() && fHistGainTime )
610 : {
611 0 : if ((fHistGainTime->GetEntries() + cal->GetHistGainTime()->GetEntries()) < fgMergeEntriesCut)
612 : {
613 : //AliInfo(Form("fHistGainTime has %.0f tracks, going to add %.0f\n",fHistGainTime->GetEntries(),cal->GetHistGainTime()->GetEntries()));
614 0 : fHistGainTime->Add(cal->GetHistGainTime());
615 0 : }
616 : else
617 : {
618 0 : AliInfo(Form("fHistGainTime full (has %.0f merged tracks, trying to add %.0f, max allowed: %.0f)",fHistGainTime->GetEntries(), cal->GetHistGainTime()->GetEntries(), fgMergeEntriesCut));
619 : }
620 : }
621 :
622 0 : if (cal->GetHistDeDxTotal()) fHistDeDxTotal->Add(cal->GetHistDeDxTotal());
623 :
624 : }
625 0 : delete iter;
626 0 : return 0;
627 :
628 0 : }
629 :
630 :
631 : AliSplineFit * AliTPCcalibTimeGain::MakeSplineFit(TGraphErrors * graph) {
632 : //
633 : // make spline fit of gain
634 : //
635 0 : AliSplineFit *fit = new AliSplineFit();
636 0 : fit->SetGraph(graph);
637 0 : fit->SetMinPoints(graph->GetN()+1);
638 0 : fit->InitKnots(graph,2,0,0.001);
639 0 : fit->SplineFit(0);
640 0 : return fit;
641 :
642 0 : }
643 :
644 :
645 :
646 : TGraphErrors * AliTPCcalibTimeGain::GetGraphAttachment(Int_t minEntries, Int_t nmaxBin, Float_t /*fracLow*/, Float_t /*fracUp*/) {
647 : //
648 : // For each time bin the driftlength-dependence of the signal is fitted.
649 : //
650 0 : TH3D * hist = fHistGainTime->Projection(1, 0, 3);
651 0 : Double_t *xvec = new Double_t[hist->GetNbinsX()];
652 0 : Double_t *yvec = new Double_t[hist->GetNbinsX()];
653 0 : Double_t *xerr = new Double_t[hist->GetNbinsX()];
654 0 : Double_t *yerr = new Double_t[hist->GetNbinsX()];
655 : Int_t counter = 0;
656 : TH2D * projectionHist = 0x0;
657 : //
658 0 : for(Int_t i=1; i < hist->GetNbinsX(); i++) {
659 : Int_t nsum=0;
660 : Int_t imin = i;
661 : Int_t imax = i;
662 0 : for (Int_t idelta=0; idelta<nmaxBin; idelta++){
663 : //
664 0 : imin = TMath::Max(i-idelta,1);
665 0 : imax = TMath::Min(i+idelta,hist->GetNbinsX());
666 0 : nsum = TMath::Nint(hist->Integral(imin,imax,1,hist->GetNbinsY()-1,1,hist->GetNbinsZ()-1));
667 0 : if (nsum==0) break;
668 0 : if (nsum>minEntries) break;
669 : }
670 0 : if (nsum<minEntries) continue;
671 : //
672 0 : hist->GetXaxis()->SetRange(imin,imax);
673 0 : projectionHist = (TH2D*)hist->Project3D("yzNUFNOF");
674 : //
675 0 : TObjArray arr;
676 0 : projectionHist->FitSlicesY(0,2, projectionHist->GetNbinsX()-2,0,"QNR",&arr);
677 0 : TH1D * histAttach = (TH1D*)arr.At(1);
678 0 : TF1 pol1("polynom1","pol1",10,240);
679 0 : histAttach->Fit(&pol1,"QNR");
680 0 : xvec[counter] = 0.5*(hist->GetXaxis()->GetBinCenter(imin)+hist->GetXaxis()->GetBinCenter(imax));
681 0 : yvec[counter] = pol1.GetParameter(1)/pol1.GetParameter(0);
682 0 : xerr[counter] = 0;
683 0 : yerr[counter] = pol1.GetParError(1)/pol1.GetParameter(0);
684 0 : counter++;
685 : //
686 0 : delete projectionHist;
687 0 : }
688 :
689 0 : TGraphErrors * graphErrors = new TGraphErrors(counter, xvec, yvec, xerr, yerr);
690 0 : delete [] xvec;
691 0 : delete [] yvec;
692 0 : delete [] xerr;
693 0 : delete [] yerr;
694 0 : delete hist;
695 0 : return graphErrors;
696 :
697 0 : }
698 :
699 :
700 :
701 : void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) {
702 : //
703 : // Method for the correct logarithmic binning of histograms
704 : //
705 0 : TAxis *axis = h->GetAxis(axisDim);
706 0 : int bins = axis->GetNbins();
707 :
708 0 : Double_t from = axis->GetXmin();
709 0 : Double_t to = axis->GetXmax();
710 0 : Double_t *newBins = new Double_t[bins + 1];
711 :
712 0 : newBins[0] = from;
713 0 : Double_t factor = pow(to/from, 1./bins);
714 :
715 0 : for (int i = 1; i <= bins; i++) {
716 0 : newBins[i] = factor * newBins[i-1];
717 : }
718 0 : axis->Set(bins, newBins);
719 0 : delete[] newBins;
720 :
721 0 : }
722 :
723 :
724 : void AliTPCcalibTimeGain::BinLogX(TH1 *h) {
725 : //
726 : // Method for the correct logarithmic binning of histograms
727 : //
728 0 : TAxis *axis = h->GetXaxis();
729 0 : int bins = axis->GetNbins();
730 :
731 0 : Double_t from = axis->GetXmin();
732 0 : Double_t to = axis->GetXmax();
733 0 : Double_t *newBins = new Double_t[bins + 1];
734 :
735 0 : newBins[0] = from;
736 0 : Double_t factor = pow(to/from, 1./bins);
737 :
738 0 : for (int i = 1; i <= bins; i++) {
739 0 : newBins[i] = factor * newBins[i-1];
740 : }
741 0 : axis->Set(bins, newBins);
742 0 : delete[] newBins;
743 :
744 0 : }
745 :
746 :
747 :
748 : void AliTPCcalibTimeGain::CalculateBetheAlephParams(TH2F *hist, Double_t * ini) {
749 : //
750 : // Fit the bethe bloch params
751 : //
752 : //{0.0762*MIP,10.632,1.34e-05,1.863,1.948}
753 : const Double_t sigma = 0.06;
754 :
755 0 : 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());
756 0 : BinLogX(histBG);
757 :
758 0 : TF1 *foElectron = new TF1("foElectron", "AliExternalTrackParam::BetheBlochAleph(x/0.000511,[0],[1],[2],[3],[4])",0.01,100);
759 0 : TF1 *foMuon = new TF1("foMuon", "AliExternalTrackParam::BetheBlochAleph(x/0.1056,[0],[1],[2],[3],[4])",0.01,100);
760 0 : TF1 *foPion = new TF1("foPion", "AliExternalTrackParam::BetheBlochAleph(x/0.138,[0],[1],[2],[3],[4])",0.01,100);
761 0 : TF1 *foKaon = new TF1("foKaon", "AliExternalTrackParam::BetheBlochAleph(x/0.498,[0],[1],[2],[3],[4])",0.01,100);
762 0 : TF1 *foProton = new TF1("foProton", "AliExternalTrackParam::BetheBlochAleph(x/0.938,[0],[1],[2],[3],[4])",0.01,100);
763 0 : foElectron->SetParameters(ini);
764 0 : foMuon->SetParameters(ini);
765 0 : foPion->SetParameters(ini);
766 0 : foKaon->SetParameters(ini);
767 0 : foProton->SetParameters(ini);
768 :
769 0 : TCanvas *canvCheck1 = new TCanvas();
770 0 : hist->Draw("colz");
771 0 : foElectron->Draw("same");
772 0 : foMuon->Draw("same");
773 0 : foPion->Draw("same");
774 0 : foKaon->Draw("same");
775 0 : foProton->Draw("same");
776 :
777 : // Loop over all points of the input histogram
778 :
779 0 : for(Int_t i=1; i < hist->GetNbinsX(); i++) {
780 0 : Double_t x = hist->GetXaxis()->GetBinCenter(i);
781 0 : for(Int_t j=1; j < hist->GetNbinsY(); j++) {
782 0 : Long64_t n = hist->GetBin(i, j);
783 0 : Double_t y = hist->GetYaxis()->GetBinCenter(j);
784 0 : Double_t entries = hist->GetBinContent(n);
785 : Double_t mass = 0;
786 :
787 : // 1. identify protons
788 : mass = 0.938;
789 0 : if (TMath::Abs(y - foProton->Eval(x))/foProton->Eval(x) < 4*sigma && x < 0.65 ) {
790 0 : for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
791 0 : }
792 :
793 : // 2. identify electrons
794 : mass = 0.000511;
795 0 : if (fIsCosmic) {
796 0 : if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 4*sigma && (x>0.25&&x<0.7) && fIsCosmic) {
797 0 : for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
798 0 : }
799 : } else {
800 0 : 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))) {
801 0 : for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
802 0 : }
803 : }
804 :
805 : // 3. identify either muons or pions depending on cosmic or not
806 0 : if (fIsCosmic) {
807 : mass = 0.1056;
808 0 : if (TMath::Abs(y - foMuon->Eval(x))/foMuon->Eval(x) < 4*sigma && x > 0.25 && x < 100 ) {
809 0 : for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
810 0 : }
811 : } else {
812 : mass = 0.1396;
813 0 : if (TMath::Abs(y - foPion->Eval(x))/foPion->Eval(x) < 4*sigma && x > 0.15 && x < 2) {
814 0 : for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
815 0 : }
816 : }
817 :
818 : // 4. for pp also Kaons must be included
819 0 : if (!fIsCosmic) {
820 : mass = 0.4936;
821 0 : if (TMath::Abs(y - foKaon->Eval(x))/foKaon->Eval(x) < 4*sigma && x > 0.2 && x < 0.3 ) {
822 0 : for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
823 0 : }
824 : }
825 : }
826 : }
827 :
828 : // Fit Aleph-Parameters to the obtained profile
829 0 : TF1 * funcAlephD = new TF1("AlephParametrizationD", "AliExternalTrackParam::BetheBlochAleph(x,[0],[1],[2],[3],[4])",0.3,10000);
830 0 : funcAlephD->SetParameters(ini);
831 :
832 0 : TCanvas *canvCheck2 = new TCanvas();
833 0 : histBG->Draw();
834 :
835 : //FitSlices
836 0 : TObjArray * arr = new TObjArray();
837 0 : histBG->FitSlicesY(0,0,-1,0,"QN",arr);
838 0 : TH1D * fitMean = (TH1D*) arr->At(1);
839 0 : fitMean->Draw("same");
840 :
841 0 : funcAlephD->SetParLimits(2,1e-3,1e-7);
842 0 : funcAlephD->SetParLimits(3,0.5,3.5);
843 0 : funcAlephD->SetParLimits(4,0.5,3.5);
844 0 : fitMean->Fit(funcAlephD, "QNR");
845 0 : funcAlephD->Draw("same");
846 :
847 0 : for(Int_t i=0;i<5;i++) ini[i] = funcAlephD->GetParameter(i);
848 :
849 0 : foElectron->SetParameters(ini);
850 0 : foMuon->SetParameters(ini);
851 0 : foPion->SetParameters(ini);
852 0 : foKaon->SetParameters(ini);
853 0 : foProton->SetParameters(ini);
854 :
855 0 : TCanvas *canvCheck3 = new TCanvas();
856 0 : hist->Draw("colz");
857 0 : foElectron->Draw("same");
858 0 : foMuon->Draw("same");
859 0 : foPion->Draw("same");
860 0 : foKaon->Draw("same");
861 0 : foProton->Draw("same");
862 :
863 0 : canvCheck1->Print();
864 0 : canvCheck2->Print();
865 0 : canvCheck3->Print();
866 :
867 : return;
868 :
869 :
870 0 : }
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