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C0HWU TRD trigger added to the list of cosmic triggers. Agreed with Federico A.
[u/mrichter/AliRoot.git] / TPC / AliTPCcalibTimeGain.cxx
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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
18This 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
22gSystem->Load("libANALYSIS");
23gSystem->Load("libSTAT");
24gSystem->Load("libTPCcalib");
25
26
27//1. Do calibration ...
28//
29// compare reference
30
31//
32//2. Visualize results
33//
34TFile fcalib("CalibObjects.root");
35TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib");
36AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain");
37TGraphErrors * gr = gain->GetGraphGainVsTime(0,1000)
38
39// gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6)
40TH2D * GainTime = gain->GetHistGainTime()->Projection(0,1)
41GainTime->GetXaxis()->SetTimeDisplay(kTRUE)
42GainTime->GetXaxis()->SetTimeFormat("#splitline{%d/%m}{%H:%M}")
43GainTime->Draw("colz")
44
45//
46// MakeSlineFit example
47//
48AliSplineFit *fit = AliTPCcalibTimeGain::MakeSplineFit(gr)
49
50TGraph * grfit = fit.MakeGraph(gr->GetX()[0],gr->GetX()[gr->GetN()-1],50000,0);
51
52gr->SetMarkerStyle(25);
53gr->Draw("lp");
54grfit->SetLineColor(2);
55grfit->Draw("lu");
56
57//
58// QA - dE/dx resoultion as a function of time
59//TCa
60
61TGraph * grSigma = AliTPCcalibBase::FitSlicesSigma(gain->GetHistGainTime(),0,1,1800,5)
62
63TCanvas *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
70GainTime->Draw("colz")
71gr->Draw("lp")
72
73
74
75 c1->cd();
76 Double_t ymin = -0.04;
77 Double_t ymax = 0.12;
78Double_t dy = (ymax-ymin)/0.8;
79Double_t xmin = GainTime->GetXaxis()->GetXmin()
80Double_t xmax = GainTime->GetXaxis()->GetXmax()
81Double_t dx = (xmax-xmin)/0.8; //10 per cent margins left and right
82pad2->Range(xmin-0.1*dx,ymin-0.1*dy,xmax+0.1*dx,ymax+0.1*dy);
83 pad2->Draw();
84 pad2->cd();
85grSigma->SetLineColor(2);
86grSigma->SetLineWidth(2);
87grSigma->Draw("lp")
88TGaxis *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
97TFile fcalib("CalibObjects40366b.root");
98TObjArray * array = (TObjArray*)fcalib.Get("TPCCalib");
99AliTPCcalibTimeGain * gain = ( AliTPCcalibTimeGain *)array->FindObject("calibTimeGain");
100TGraphErrors * grAttach = gain->GetGraphAttachment(2000,4)
101
102TCanvas *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
109gain->GetHistGainTime()->GetAxis(1)->SetRangeUser(1213.8e6,1214.3e6)
110TH2D * GainTime = gain->GetHistGainTime()->Projection(0,1)
111GainTime->GetXaxis()->SetTimeDisplay(kTRUE)
112GainTime->GetXaxis()->SetTimeFormat("#splitline{%d/%m}{%H:%M}")
113GainTime->Draw("colz")
114//gr->Draw("lp")
115
116 c1->cd();
117 Double_t ymin = -0.001;
118 Double_t ymax = 0.001;
119Double_t dy = (ymax-ymin)/0.8;
120Double_t xmin = GainTime->GetXaxis()->GetXmin()
121Double_t xmax = GainTime->GetXaxis()->GetXmax()
122Double_t dx = (xmax-xmin)/0.8; //10 per cent margins left and right
123pad2->Range(xmin-0.1*dx,ymin-0.1*dy,xmax+0.1*dx,ymax+0.1*dy);
124 pad2->Draw();
125 pad2->cd();
126grAttach->SetLineColor(2);
127grAttach->SetLineWidth(2);
128grAttach->Draw("lp")
129TGaxis *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
168#include "AliLog.h"
169
170#include "AliTPCcalibTimeGain.h"
171
172#include "TTreeStream.h"
173#include "AliTPCTracklet.h"
174#include "TTimeStamp.h"
175#include "AliTPCcalibDB.h"
176#include "AliTPCcalibLaser.h"
177#include "AliDCSSensorArray.h"
178#include "AliDCSSensor.h"
179
180ClassImp(AliTPCcalibTimeGain)
181
182
183AliTPCcalibTimeGain::AliTPCcalibTimeGain()
184 :AliTPCcalibBase(),
185 fHistGainTime(0),
186 fGainVsTime(0),
187 fHistDeDxTotal(0),
188 fIntegrationTimeDeDx(0),
189 fMIP(0),
190 fUseMax(0),
191 fLowerTrunc(0),
192 fUpperTrunc(0),
193 fUseShapeNorm(0),
194 fUsePosNorm(0),
195 fUsePadNorm(0),
196 fUseCookAnalytical(0),
197 fIsCosmic(0),
198 fLowMemoryConsumption(0)
199{
200 AliInfo("Default Constructor");
201}
202
203
204AliTPCcalibTimeGain::AliTPCcalibTimeGain(const Text_t *name, const Text_t *title, UInt_t StartTime, UInt_t EndTime, Int_t deltaIntegrationTimeGain)
205 :AliTPCcalibBase(),
206 fHistGainTime(0),
207 fGainVsTime(0),
208 fHistDeDxTotal(0),
209 fIntegrationTimeDeDx(0),
210 fMIP(0),
211 fUseMax(0),
212 fLowerTrunc(0),
213 fUpperTrunc(0),
214 fUseShapeNorm(0),
215 fUsePosNorm(0),
216 fUsePadNorm(0),
217 fUseCookAnalytical(0),
218 fIsCosmic(0),
219 fLowMemoryConsumption(0)
220{
221
222 SetName(name);
223 SetTitle(title);
224
225 AliInfo("Non Default Constructor");
226
227 fIntegrationTimeDeDx = deltaIntegrationTimeGain;
228
229 Double_t deltaTime = EndTime - StartTime;
230
231
232 // main histogram for time dependence: dE/dx, time, type (1-muon cosmic,2-pion beam data), meanDriftlength, momenta (only filled if enough space is available), run number
233 Int_t timeBins = TMath::Nint(deltaTime/deltaIntegrationTimeGain);
234 Int_t binsGainTime[6] = {150, timeBins, 2, 25, 200, 10000000};
235 Double_t xminGainTime[6] = {0.5, StartTime, 0.5, 0, 0.1, -0.5};
236 Double_t xmaxGainTime[6] = { 8, EndTime, 2.5, 250, 50, 9999999.5};
237 fHistGainTime = new THnSparseF("HistGainTime","dEdx time dep.;dEdx,time,type,driftlength,momenta,run number;dEdx",6,binsGainTime,xminGainTime,xmaxGainTime);
238 BinLogX(fHistGainTime, 4);
239 //
240 fHistDeDxTotal = new TH2F("DeDx","dEdx; momentum p (GeV); TPC signal (a.u.)",250,0.01,100.,1000,0.,8);
241 BinLogX(fHistDeDxTotal);
242
243 // default values for dE/dx
244 fMIP = 50.;
245 fUseMax = kTRUE;
246 fLowerTrunc = 0.0;
247 fUpperTrunc = 0.7;
248 fUseShapeNorm = kTRUE;
249 fUsePosNorm = kFALSE;
250 fUsePadNorm = kFALSE;
251 fUseCookAnalytical = kFALSE;
252 //
253 fIsCosmic = kTRUE;
254 fLowMemoryConsumption = kTRUE;
255 //
256
257}
258
259
260
261AliTPCcalibTimeGain::~AliTPCcalibTimeGain(){
262 //
263 //
264 //
265}
266
267
268void AliTPCcalibTimeGain::Process(AliESDEvent *event) {
269 //
270 // main track loop
271 //
272 if (!event) {
273 Printf("ERROR: ESD not available");
274 return;
275 }
276
277 if (fIsCosmic) { // this should be removed at some point based on trigger mask !?
278 ProcessCosmicEvent(event);
279 } else {
280 ProcessBeamEvent(event);
281 }
282
283
284
285
286}
287
288
289void AliTPCcalibTimeGain::ProcessCosmicEvent(AliESDEvent *event) {
290
291 AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
292 if (!ESDfriend) {
293 Printf("ERROR: ESDfriend not available");
294 return;
295 }
296 //
297 UInt_t time = event->GetTimeStamp();
298 Int_t ntracks = event->GetNumberOfTracks();
299 Int_t runNumber = event->GetRunNumber();
300 //
301 // track loop
302 //
303 for (Int_t i=0;i<ntracks;++i) {
304
305 AliESDtrack *track = event->GetTrack(i);
306 if (!track) continue;
307
308 const AliExternalTrackParam * trackIn = track->GetInnerParam();
309 const AliExternalTrackParam * trackOut = track->GetOuterParam();
310 if (!trackIn) continue;
311 if (!trackOut) continue;
312
313 // calculate necessary track parameters
314 Double_t meanP = trackIn->GetP();
315 Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ());
316 Int_t NclsDeDx = track->GetTPCNcls();
317
318 // exclude tracks which do not look like primaries or are simply too short or on wrong sectors
319 if (NclsDeDx < 60) continue;
320 if (TMath::Abs(trackIn->GetTgl()) > 1) continue;
321 if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue;
322
323 // Get seeds
324 AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i);
325 if (!friendTrack) continue;
326 TObject *calibObject;
327 AliTPCseed *seed = 0;
328 for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
329 if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
330 }
331
332 if (seed) {
333 Double_t TPCsignal = GetTPCdEdx(seed);
334 if (NclsDeDx > 100) fHistDeDxTotal->Fill(meanP, TPCsignal);
335 //
336 if (fLowMemoryConsumption) {
337 if (meanP < 20) continue;
338 meanP = 30; // set all momenta to one in order to save memory
339 }
340 //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta
341 Double_t vec[6] = {TPCsignal,time,1,meanDrift,meanP,runNumber};
342 fHistGainTime->Fill(vec);
343 }
344
345 }
346
347}
348
349
350
351void AliTPCcalibTimeGain::ProcessBeamEvent(AliESDEvent *event) {
352
353 AliESDfriend *ESDfriend=static_cast<AliESDfriend*>(event->FindListObject("AliESDfriend"));
354 if (!ESDfriend) {
355 Printf("ERROR: ESDfriend not available");
356 return;
357 }
358 //
359 UInt_t time = event->GetTimeStamp();
360 Int_t ntracks = event->GetNumberOfTracks();
361 Int_t runNumber = event->GetRunNumber();
362 //
363 // track loop
364 //
365 for (Int_t i=0;i<ntracks;++i) {
366
367 AliESDtrack *track = event->GetTrack(i);
368 if (!track) continue;
369
370 const AliExternalTrackParam * trackIn = track->GetInnerParam();
371 const AliExternalTrackParam * trackOut = track->GetOuterParam();
372 if (!trackIn) continue;
373 if (!trackOut) continue;
374
375 // calculate necessary track parameters
376 Double_t meanP = trackIn->GetP();
377 Double_t meanDrift = 250 - 0.5*TMath::Abs(trackIn->GetZ() + trackOut->GetZ());
378 Int_t NclsDeDx = track->GetTPCNcls();
379
380 // exclude tracks which do not look like primaries or are simply too short or on wrong sectors
381 if (NclsDeDx < 60) continue;
382 if (TMath::Abs(trackIn->GetTgl()) > 1) continue;
383 if (TMath::Abs(trackIn->GetSnp()) > 0.6) continue;
384
385 // Get seeds
386 AliESDfriendTrack *friendTrack = ESDfriend->GetTrack(i);
387 if (!friendTrack) continue;
388 TObject *calibObject;
389 AliTPCseed *seed = 0;
390 for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
391 if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
392 }
393
394 if (seed) {
395 Double_t TPCsignal = GetTPCdEdx(seed);
396 fHistDeDxTotal->Fill(meanP, TPCsignal);
397 //
398 if (fLowMemoryConsumption) {
399 if (meanP > 0.5 || meanP < 0.4) continue;
400 meanP = 0.45; // set all momenta to one in order to save memory
401 }
402 //dE/dx, time, type (1-muon cosmic,2-pion beam data), momenta
403 Double_t vec[6] = {TPCsignal,time,2,meanDrift,meanP,runNumber};
404 fHistGainTime->Fill(vec);
405 }
406
407 }
408
409}
410
411
412Float_t AliTPCcalibTimeGain::GetTPCdEdx(AliTPCseed * seed) {
413
414 Double_t signal = 0;
415 //
416 if (!fUseCookAnalytical) {
417 signal = (1/fMIP)*seed->CookdEdxNorm(fLowerTrunc,fUpperTrunc,fUseMax,0,159,fUseShapeNorm,fUsePosNorm,fUsePadNorm,0);
418 } else {
419 signal = (1/fMIP)*seed->CookdEdxAnalytical(fLowerTrunc,fUpperTrunc,fUseMax);
420 }
421 //
422 return signal;
423}
424
425
426void AliTPCcalibTimeGain::AnalyzeRun(Int_t minEntries) {
427 //
428 //
429 //
430 if (fIsCosmic) {
431 fHistGainTime->GetAxis(2)->SetRangeUser(0.51,1.49); // only cosmics
432 fHistGainTime->GetAxis(4)->SetRangeUser(20,100); // only Fermi-Plateau muons
433 } else {
434 fHistGainTime->GetAxis(2)->SetRangeUser(1.51,2.49); // only beam data
435 fHistGainTime->GetAxis(4)->SetRangeUser(0.39,0.51); // only MIP pions
436 }
437 //
438 fGainVsTime = AliTPCcalibBase::FitSlices(fHistGainTime,0,1,minEntries,10);
439 //
440 return;
441}
442
443
444TGraphErrors * AliTPCcalibTimeGain::GetGraphGainVsTime(Int_t runNumber, Int_t minEntries) {
445 //
446 //
447 //
448 if (runNumber == 0) {
449 if (!fGainVsTime) {
450 AnalyzeRun(minEntries);
451 }
452 } else {
453 // 1st check if the current run was cosmic or beam event
454 fHistGainTime->GetAxis(5)->SetRangeUser(runNumber,runNumber);
455 AnalyzeRun(minEntries);
456 }
457 if (fGainVsTime->GetN() == 0) return 0;
458 return fGainVsTime;
459}
460
461Long64_t AliTPCcalibTimeGain::Merge(TCollection *li) {
462
463 TIterator* iter = li->MakeIterator();
464 AliTPCcalibTimeGain* cal = 0;
465
466 while ((cal = (AliTPCcalibTimeGain*)iter->Next())) {
467 if (!cal->InheritsFrom(AliTPCcalibTimeGain::Class())) {
468 Error("Merge","Attempt to add object of class %s to a %s", cal->ClassName(), this->ClassName());
469 return -1;
470 }
471
472 // add histograms here...
473 if (cal->GetHistGainTime()) fHistGainTime->Add(cal->GetHistGainTime());
474 if (cal->GetHistDeDxTotal()) fHistDeDxTotal->Add(cal->GetHistDeDxTotal());
475
476 }
477
478 return 0;
479
480}
481
482
483AliSplineFit * AliTPCcalibTimeGain::MakeSplineFit(TGraphErrors * graph) {
484 //
485 //
486 //
487 AliSplineFit *fit = new AliSplineFit();
488 fit->SetGraph(graph);
489 fit->SetMinPoints(graph->GetN()+1);
490 fit->InitKnots(graph,2,0,0.001);
491 fit->SplineFit(0);
492 return fit;
493
494}
495
496
497
498TGraphErrors * AliTPCcalibTimeGain::GetGraphAttachment(Int_t minEntries, Int_t nmaxBin, Float_t /*fracLow*/, Float_t /*fracUp*/) {
499 //
500 // For each time bin the driftlength-dependence of the signal is fitted.
501 //
502 TH3D * hist = fHistGainTime->Projection(1, 0, 3);
503 Double_t *xvec = new Double_t[hist->GetNbinsX()];
504 Double_t *yvec = new Double_t[hist->GetNbinsX()];
505 Double_t *xerr = new Double_t[hist->GetNbinsX()];
506 Double_t *yerr = new Double_t[hist->GetNbinsX()];
507 Int_t counter = 0;
508 TH2D * projectionHist = 0x0;
509 //
510 for(Int_t i=1; i < hist->GetNbinsX(); i++) {
511 Int_t nsum=0;
512 Int_t imin = i;
513 Int_t imax = i;
514 for (Int_t idelta=0; idelta<nmaxBin; idelta++){
515 //
516 imin = TMath::Max(i-idelta,1);
517 imax = TMath::Min(i+idelta,hist->GetNbinsX());
518 nsum = TMath::Nint(hist->Integral(imin,imax,1,hist->GetNbinsY()-1,1,hist->GetNbinsZ()-1));
519 if (nsum==0) break;
520 if (nsum>minEntries) break;
521 }
522 if (nsum<minEntries) continue;
523 //
524 hist->GetXaxis()->SetRange(imin,imax);
525 projectionHist = (TH2D*)hist->Project3D("yzNUFNOF");
526 //
527 TObjArray arr;
528 projectionHist->FitSlicesY(0,2, projectionHist->GetNbinsX()-2,0,"QNR",&arr);
529 TH1D * histAttach = (TH1D*)arr.At(1);
530 TF1 pol1("polynom1","pol1",10,240);
531 histAttach->Fit(&pol1,"QNR");
532 xvec[counter] = 0.5*(hist->GetXaxis()->GetBinCenter(imin)+hist->GetXaxis()->GetBinCenter(imax));
533 yvec[counter] = pol1.GetParameter(1)/pol1.GetParameter(0);
534 xerr[counter] = 0;
535 yerr[counter] = pol1.GetParError(1)/pol1.GetParameter(0);
536 counter++;
537 //
538 delete projectionHist;
539 }
540
541 TGraphErrors * graphErrors = new TGraphErrors(counter, xvec, yvec, xerr, yerr);
542 delete [] xvec;
543 delete [] yvec;
544 delete [] xerr;
545 delete [] yerr;
546 delete hist;
547 return graphErrors;
548
549}
550
551
552
553void AliTPCcalibTimeGain::BinLogX(THnSparse *h, Int_t axisDim) {
554
555 // Method for the correct logarithmic binning of histograms
556
557 TAxis *axis = h->GetAxis(axisDim);
558 int bins = axis->GetNbins();
559
560 Double_t from = axis->GetXmin();
561 Double_t to = axis->GetXmax();
562 Double_t *new_bins = new Double_t[bins + 1];
563
564 new_bins[0] = from;
565 Double_t factor = pow(to/from, 1./bins);
566
567 for (int i = 1; i <= bins; i++) {
568 new_bins[i] = factor * new_bins[i-1];
569 }
570 axis->Set(bins, new_bins);
571 delete new_bins;
572
573}
574
575
576void AliTPCcalibTimeGain::BinLogX(TH1 *h) {
577
578 // Method for the correct logarithmic binning of histograms
579
580 TAxis *axis = h->GetXaxis();
581 int bins = axis->GetNbins();
582
583 Double_t from = axis->GetXmin();
584 Double_t to = axis->GetXmax();
585 Double_t *new_bins = new Double_t[bins + 1];
586
587 new_bins[0] = from;
588 Double_t factor = pow(to/from, 1./bins);
589
590 for (int i = 1; i <= bins; i++) {
591 new_bins[i] = factor * new_bins[i-1];
592 }
593 axis->Set(bins, new_bins);
594 delete new_bins;
595
596}
597
598
599
600void AliTPCcalibTimeGain::CalculateBetheAlephParams(TH2F *hist, Double_t * ini) {
601 //{0.0762*MIP,10.632,1.34e-05,1.863,1.948}
602 const Double_t sigma = 0.06;
603
604 TH2F *histBG = new TH2F("histBG","dEdxBg; #beta #gamma; TPC signal (a.u.)",TMath::Nint(0.5*hist->GetNbinsX()),0.1,5000.,hist->GetNbinsY(),hist->GetYaxis()->GetXmin(),hist->GetYaxis()->GetXmax());
605 BinLogX(histBG);
606
607 TF1 *foElectron = new TF1("foElectron", "AliExternalTrackParam::BetheBlochAleph(x/0.000511,[0],[1],[2],[3],[4])",0.01,100);
608 TF1 *foMuon = new TF1("foMuon", "AliExternalTrackParam::BetheBlochAleph(x/0.1056,[0],[1],[2],[3],[4])",0.01,100);
609 TF1 *foPion = new TF1("foPion", "AliExternalTrackParam::BetheBlochAleph(x/0.138,[0],[1],[2],[3],[4])",0.01,100);
610 TF1 *foKaon = new TF1("foKaon", "AliExternalTrackParam::BetheBlochAleph(x/0.498,[0],[1],[2],[3],[4])",0.01,100);
611 TF1 *foProton = new TF1("foProton", "AliExternalTrackParam::BetheBlochAleph(x/0.938,[0],[1],[2],[3],[4])",0.01,100);
612 foElectron->SetParameters(ini);
613 foMuon->SetParameters(ini);
614 foPion->SetParameters(ini);
615 foKaon->SetParameters(ini);
616 foProton->SetParameters(ini);
617
618 TCanvas *CanvCheck1 = new TCanvas();
619 hist->Draw("colz");
620 foElectron->Draw("same");
621 foMuon->Draw("same");
622 foPion->Draw("same");
623 foKaon->Draw("same");
624 foProton->Draw("same");
625
626 // Loop over all points of the input histogram
627
628 for(Int_t i=1; i < hist->GetNbinsX(); i++) {
629 Double_t x = hist->GetXaxis()->GetBinCenter(i);
630 for(Int_t j=1; j < hist->GetNbinsY(); j++) {
631 Long64_t n = hist->GetBin(i, j);
632 Double_t y = hist->GetYaxis()->GetBinCenter(j);
633 Double_t entries = hist->GetBinContent(n);
634 Double_t mass = 0;
635
636 // 1. identify protons
637 mass = 0.938;
638 if (TMath::Abs(y - foProton->Eval(x))/foProton->Eval(x) < 4*sigma && x < 0.65 ) {
639 for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
640 }
641
642 // 2. identify electrons
643 mass = 0.000511;
644 if (fIsCosmic) {
645 if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 4*sigma && (x>0.25&&x<0.7) && fIsCosmic) {
646 for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
647 }
648 } else {
649 if (TMath::Abs(y - foElectron->Eval(x))/foElectron->Eval(x) < 2*sigma && ((x>0.25&&x<0.35) || (x>1.5&&x<1.8) || (x>0.65&&x<0.7))) {
650 for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
651 }
652 }
653
654 // 3. identify either muons or pions depending on cosmic or not
655 if (fIsCosmic) {
656 mass = 0.1056;
657 if (TMath::Abs(y - foMuon->Eval(x))/foMuon->Eval(x) < 4*sigma && x > 0.25 && x < 100 ) {
658 for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
659 }
660 } else {
661 mass = 0.1396;
662 if (TMath::Abs(y - foPion->Eval(x))/foPion->Eval(x) < 4*sigma && x > 0.15 && x < 2) {
663 for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
664 }
665 }
666
667 // 4. for pp also Kaons must be included
668 if (!fIsCosmic) {
669 mass = 0.4936;
670 if (TMath::Abs(y - foKaon->Eval(x))/foKaon->Eval(x) < 4*sigma && x > 0.2 && x < 0.3 ) {
671 for(Int_t iEntries =0; iEntries < entries; iEntries++) histBG->Fill(x/mass, y);
672 }
673 }
674 }
675 }
676
677 // Fit Aleph-Parameters to the obtained profile
678 TF1 * funcAlephD = new TF1("AlephParametrizationD", "AliExternalTrackParam::BetheBlochAleph(x,[0],[1],[2],[3],[4])",0.3,10000);
679 funcAlephD->SetParameters(ini);
680
681 TCanvas *CanvCheck2 = new TCanvas();
682 histBG->Draw();
683
684 //FitSlices
685 TObjArray * arr = new TObjArray();
686 histBG->FitSlicesY(0,0,-1,0,"QN",arr);
687 TH1D * fitMean = (TH1D*) arr->At(1);
688 fitMean->Draw("same");
689
690 funcAlephD->SetParLimits(2,1e-3,1e-7);
691 funcAlephD->SetParLimits(3,0.5,3.5);
692 funcAlephD->SetParLimits(4,0.5,3.5);
693 fitMean->Fit(funcAlephD, "QNR");
694 funcAlephD->Draw("same");
695
696 for(Int_t i=0;i<5;i++) ini[i] = funcAlephD->GetParameter(i);
697
698 foElectron->SetParameters(ini);
699 foMuon->SetParameters(ini);
700 foPion->SetParameters(ini);
701 foKaon->SetParameters(ini);
702 foProton->SetParameters(ini);
703
704 TCanvas *CanvCheck3 = new TCanvas();
705 hist->Draw("colz");
706 foElectron->Draw("same");
707 foMuon->Draw("same");
708 foPion->Draw("same");
709 foKaon->Draw("same");
710 foProton->Draw("same");
711
712 CanvCheck1->Print();
713 CanvCheck2->Print();
714 CanvCheck3->Print();
715
716 return;
717
718
719}