1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 /**************************************************************************
20 * This class builds AliTPCtrack objects from generated tracks to feed *
21 * ITS tracking (V2). The AliTPCtrack is built from its first hit in *
22 * the TPC. The track is assigned a Kalman-like covariance matrix *
23 * depending on its pT and pseudorapidity and track parameters are *
24 * smeared according to this covariance matrix. *
25 * Output file contains sorted tracks, ready for matching with ITS. *
28 * Alice Internal Note 2003-011 *
30 * Test macro is: AliBarrelRec_TPCparam.C *
32 * 2002/10/01: Introduction of the database for pp collisions (B=0.4 T) *
33 * - Everything done separately for pions, kaons, protons, electrons and *
35 * - Now (only for pp) the tracks are built from the AliTrackReferences *
36 * which contain the position and momentum of all tracks at R = 83 cm; *
37 * This eliminates the loss of tracks due the dead zone of the TPC *
38 * where the 1st hit is not created. *
39 * - In AliBarrelRec_TPCparam.C there many possible ways of determining *
40 * the z coordinate of the primary vertex in pp events (from pixels, *
41 * from ITS tracks, smearing according to resolution given by tracks. *
43 * 2002/04/28: Major upgrade of the class *
44 * - Covariance matrices and pulls are now separeted for pions, kaons *
46 * - A parameterization of dE/dx in the TPC has been included and it is *
47 * used to assign a mass to each track according to a rough dE/dx PID. *
48 * - All the "numbers" have been moved to the file with the DataBase, *
49 * they are read as objects of the class AliTPCkineGrid, and assigned *
50 * to data memebers of the class AliTPCtrackerParam. *
51 * - All the code necessary to create a BataBase has been included in *
52 * class (see the macro AliTPCtrackingParamDB.C for the details). *
54 * 2006/03/16: Adapted to ESD input/output *
56 * Origin: Andrea Dainese, Padova - e-mail: andrea.dainese@pd.infn.it *
57 * adapted to ESD output by Marcello Lunardon, Padova *
58 **************************************************************************/
60 // This is a dummy comment
64 //------- Root headers --------
65 #include <Riostream.h>
70 #include <TGraphErrors.h>
75 #include <TParticle.h>
80 //------ AliRoot headers ------
81 #include "AliGausCorr.h"
82 #include "AliTracker.h"
86 #include "AliRunLoader.h"
88 #include "AliTPCParamSR.h"
89 #include "AliTPCkineGrid.h"
90 #include "AliTPCtrack.h"
91 #include "AliTPCtrackerParam.h"
92 #include "AliTrackReference.h"
93 //-----------------------------
95 Double_t RegFunc(Double_t *x,Double_t *par) {
96 // This is the function used to regularize the covariance matrix
97 Double_t value = par[0]+par[1]/TMath::Power(x[0],par[2]);
101 // structure for DB building
111 Double_t dP0,dP1,dP2,dP3,dP4;
112 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
115 // cov matrix structure
117 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
120 ClassImp(AliTPCtrackerParam)
122 //-----------------------------------------------------------------------------
123 AliTPCtrackerParam::AliTPCtrackerParam(Int_t kcoll, Double_t kBz,
124 const char* evfoldname):TObject(),
125 fEvFolderName(evfoldname),
164 //-----------------------------------------------------------------------------
165 // This is the class conctructor
166 //-----------------------------------------------------------------------------
168 // fBz = kBz; // value of the z component of L3 field (Tesla)
169 // fColl = kcoll; // collision code (0: PbPb6000; 1: pp)
170 // fSelAndSmear = kTRUE; // by default selection and smearing are done
172 if(fBz!=0.4 && fBz!=0.5) {
173 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid field!\n Available: 0.4 or 0.5");
175 if(fColl!=0 && fColl!=1) {
176 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid collision!\n Available: 0 -> PbPb6000\n 1 -> pp");
179 fDBfileName = gSystem->Getenv("ALICE_ROOT");
180 fDBfileName.Append("/TPC/CovMatrixDB_");
181 //fDBfileName = "CovMatrixDB_";
182 if(fColl==0) fDBfileName.Append("PbPb6000");
183 if(fColl==1) fDBfileName.Append("pp");
184 if(fBz==0.4) fDBfileName.Append("_B0.4T.root");
185 // use same DB for 0.4 and 0.5 T; for 0.5 T, correction done in CookTrack()
186 if(fBz==0.5) fDBfileName.Append("_B0.4T.root");
188 //-----------------------------------------------------------------------------
189 AliTPCtrackerParam::~AliTPCtrackerParam() {}
190 //____________________________________________________________________________
191 AliTPCtrackerParam::AliTPCtrackerParam( const AliTPCtrackerParam& p)
232 // dummy copy constructor
234 //----------------------------------------------------------------------------
235 AliTPCtrackerParam::AliTPCseedGeant::AliTPCseedGeant(
236 Double_t x,Double_t y,Double_t z,
237 Double_t px,Double_t py,Double_t pz,
251 //----------------------------------------------------------------------------
252 // Constructor of the geant seeds
253 //----------------------------------------------------------------------------
255 Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
257 fSector = (Int_t)(a/20.);
258 fAlpha = 10.+20.*fSector;
260 fAlpha *= TMath::Pi();
262 //-----------------------------------------------------------------------------
263 Int_t AliTPCtrackerParam::Init() {
264 //-----------------------------------------------------------------------------
265 // This function reads the DB from file
266 //-----------------------------------------------------------------------------
269 printf("+++\n+++ Reading DataBase from:%s\n+++\n+++\n",fDBfileName.Data());
270 // Read paramters from DB file
271 if(!ReadAllData(fDBfileName.Data())) {
272 printf("AliTPCtrackerParam::BuildTPCtracks: \
273 Could not read data from DB\n\n"); return 1;
276 } else printf("\n ! Creating ALL TRUE tracks at TPC inner radius !\n\n");
279 // Check if value in the galice file is equal to selected one (fBz)
280 AliMagF *fiel = (AliMagF*)gAlice->Field();
281 Double_t fieval=TMath::Abs((Double_t)fiel->SolenoidField()/10.);
282 printf("Magnetic field is %6.2f Tesla\n",fieval);
284 printf("AliTPCtrackerParam::BuildTPCtracks: Invalid field!");
285 printf("Field selected is: %f T\n",fBz);
286 printf("Field found on file is: %f T\n",fieval);
290 // Set the conversion constant between curvature and Pt
291 AliTracker::SetFieldMap(fiel,kTRUE);
295 //-----------------------------------------------------------------------------
296 Int_t AliTPCtrackerParam::BuildTPCtracks(AliESD *event) {
297 //-----------------------------------------------------------------------------
298 // This function creates the TPC parameterized tracks and writes them
299 // as AliESDtrack objects in the ESD event
300 //-----------------------------------------------------------------------------
303 if(!event) return -1;
305 AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
307 Error("BuildTPCtracks","Can not get Run Loader from event folder named %s",
308 fEvFolderName.Data());
311 AliLoader* tpcloader = rl->GetLoader("TPCLoader");
312 if (tpcloader == 0x0) {
313 Error("BuildTPCtracks","Can not get TPC Loader from Run Loader.");
317 // Get gAlice object from file
318 if(!gAlice) rl->LoadgAlice();
320 rl->LoadKinematics();
321 tpcloader->LoadHits("read");
323 if(!(gAlice=rl->GetAliRun())) {
324 printf("Cannot get gAlice from Run Loader !\n");
329 AliTPC *tpc=(AliTPC*)gAlice->GetDetector("TPC");
332 AliTPCParam *digp=(AliTPCParam*)gDirectory->Get("75x40_100x60");
335 digp = new AliTPCParamSR();
337 else digp=(AliTPCParam*)gDirectory->Get("75x40_100x60_150x60");
339 if(!digp) { cerr<<"TPC parameters have not been found !\n"; return 1; }
343 AliTPCseedGeant *seed=0;
344 AliTPCtrack *tpctrack=0;
346 Int_t bin,label,pdg,charge;
348 Int_t nParticles,nSeeds,arrentr;
349 //Int_t nSel=0,nAcc=0;
351 Int_t evt=event->GetEventNumber();
355 // array for TPC tracks
356 TObjArray tArray(20000);
358 // array for TPC seeds with geant info
359 TObjArray sArray(20000);
361 // get the particles stack
362 nParticles = (Int_t)gAlice->GetEvent(evt);
364 Bool_t *done = new Bool_t[nParticles];
365 Int_t *pdgCodes = new Int_t[nParticles];
367 // loop on particles and store pdg codes
368 for(Int_t l=0; l<nParticles; l++) {
369 part = (TParticle*)gAlice->GetMCApp()->Particle(l);
370 pdgCodes[l] = part->GetPdgCode();
374 printf("+++ Number of particles: %d\n",nParticles);
376 // Create the seeds for the TPC tracks at the inner radius of TPC
378 // Get TreeH with hits
379 TTree *th = tpcloader->TreeH();
380 MakeSeedsFromHits(tpc,th,sArray);
382 // Get TreeTR with track references
384 TTree *ttr = rl->TreeTR();
386 MakeSeedsFromRefs(ttr,sArray);
389 nSeeds = sArray.GetEntries();
390 printf("+++ Number of seeds: %d\n",nSeeds);
392 // loop over entries in sArray
393 for(Int_t l=0; l<nSeeds; l++) {
394 //if(l%1==0) printf(" --- Processing seed %d of %d ---\n",l,nSeeds);
396 seed = (AliTPCseedGeant*)sArray.At(l);
399 label = seed->GetLabel();
401 // check if this track has already been processed
402 if(done[label]) continue;
404 // PDG code & electric charge
405 pdg = pdgCodes[label];
406 if(pdg>200 || pdg==-11 || pdg==-13) { charge=1; }
407 else if(pdg<-200 || pdg==11 || pdg==13) { charge=-1; }
409 pdg = TMath::Abs(pdg);
410 if(pdg>3000) pdg=211;
412 if(fSelAndSmear) SetParticle(pdg);
415 sEta = seed->GetEta();
417 // Apply selection according to TPC efficiency
418 //if(TMath::Abs(pdg)==211) nAcc++;
419 if(fSelAndSmear && !SelectedTrack(sPt,sEta)) continue;
420 //if(TMath::Abs(pdg)==211) nSel++;
422 // create AliTPCtrack object
423 BuildTrack(seed,charge);
426 bin = fDBgrid->GetBin(sPt,sEta);
429 //fCovTree = &(fCovTreePi[bin]);
430 fCovTree = fCovTreePi[bin];
433 //fCovTree = &(fCovTreeKa[bin]);
434 fCovTree = fCovTreeKa[bin];
437 //fCovTree = &(fCovTreePr[bin]);
438 fCovTree = fCovTreePr[bin];
441 //fCovTree = &(fCovTreeEl[bin]);
442 fCovTree = fCovTreeEl[bin];
445 //fCovTree = &(fCovTreeMu[bin]);
446 fCovTree = fCovTreeMu[bin];
449 // deal with covariance matrix and smearing of parameters
452 // assign the track a dE/dx and make a rough PID
456 // put track in array
457 AliTPCtrack *iotrack = new AliTPCtrack(fTrack);
458 iotrack->SetLabel(label);
459 tArray.AddLast(iotrack);
460 // Mark track as "done" and register the pdg code
464 } // loop over entries in sArray
466 // sort array with TPC tracks (decreasing pT)
469 // convert to AliESDtrack and write to AliESD
470 arrentr = tArray.GetEntriesFast();
473 for(Int_t l=0; l<arrentr; l++) {
474 tpctrack=(AliTPCtrack*)tArray.UncheckedAt(l);
475 AliESDtrack ioESDtrack;
476 ioESDtrack.UpdateTrackParams(tpctrack,AliESDtrack::kTPCin);
478 wgts[0]=0.; wgts[1]=0.; wgts[2]=0.; wgts[3]=0.; wgts[4]=0.;
479 if(TMath::Abs(tpctrack->GetMass()-0.9)<0.1) {
481 } else if(TMath::Abs(tpctrack->GetMass()-0.5)<0.1) {
487 ioESDtrack.SetESDpid(wgts);
488 event->AddTrack(&ioESDtrack);
495 printf("+++ Number of TPC tracks: %d\n",tracks);
496 //cerr<<"Average Eff: "<<(Float_t)nSel/nAcc<<endl;
503 //-----------------------------------------------------------------------------
504 void AliTPCtrackerParam::AnalyzedEdx(const Char_t *outName,Int_t pdg) {
505 //-----------------------------------------------------------------------------
506 // This function computes the dE/dx for pions, kaons, protons and electrons,
507 // in the [pT,eta] bins.
508 // Input file is CovMatrix_AllEvts.root.
509 //-----------------------------------------------------------------------------
511 gStyle->SetOptStat(0);
512 gStyle->SetOptFit(10001);
514 const char *part="PIONS";
518 // create a chain with compared tracks
519 TChain *cmptrkchain = new ("cmptrktree");
520 cmptrkchain.Add("CovMatrix_AllEvts.root");
521 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
522 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
523 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
527 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
528 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
531 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
532 Int_t entries = (Int_t)cmptrktree->GetEntries();
533 cerr<<" Number of entries: "<<entries<<endl;
535 InitializeKineGrid("DB");
536 InitializeKineGrid("dEdx");
563 const Int_t knTotBins = fDBgrid->GetTotBins();
565 cerr<<" Fit bins: "<<knTotBins<<endl;
568 Int_t *n = new Int_t[knTotBins];
569 Double_t *p = new Double_t[knTotBins];
570 Double_t *ep = new Double_t[knTotBins];
571 Double_t *mean = new Double_t[knTotBins];
572 Double_t *sigma = new Double_t[knTotBins];
574 for(Int_t l=0; l<knTotBins; l++) {
575 n[l] = 1; // set to 1 to avoid divisions by 0
576 p[l] = mean[l] = sigma[l] = ep[l] = 0.;
579 // loop on chain entries for the mean
580 for(Int_t l=0; l<entries; l++) {
581 cmptrktree->GetEvent(l);
582 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
583 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
585 mean[bin] += cmptrk.dEdx;
587 } // loop on chain entries
589 for(Int_t l=0; l<knTotBins; l++) {
592 n[l] = 1; // set to 1 to avoid divisions by 0
595 // loop on chain entries for the sigma
596 for(Int_t l=0; l<entries; l++) {
597 cmptrktree->GetEvent(l);
598 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
599 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
600 if(cmptrk.p<1. && TMath::Abs(cmptrk.p-p[bin])>0.025) continue;
602 sigma[bin] += (cmptrk.dEdx-mean[bin])*(cmptrk.dEdx-mean[bin]);
603 } // loop on chain entries
605 for(Int_t l=0; l<knTotBins; l++) {
606 sigma[l] = TMath::Sqrt(sigma[l]/n[l]);
610 TCanvas *canv = new TCanvas("canv","dEdx",0,0,900,700);
612 // create the graph for dEdx vs p
613 TGraphErrors *gr = new TGraphErrors(knTotBins,p,mean,ep,sigma);
614 TString title(" : dE/dx vs momentum"); title.Prepend(part);
615 TH2F *frame = new TH2F("frame1",title.Data(),2,0.1,50,2,0,ymax);
616 frame->SetXTitle("p [GeV/c]");
617 frame->SetYTitle("dE/dx [a.u.]");
624 for(Int_t i=0; i<knTotBins; i++) {
625 fdEdxMeanPi.SetParam(i,mean[i]);
626 fdEdxRMSPi.SetParam(i,sigma[i]);
630 for(Int_t i=0; i<knTotBins; i++) {
631 fdEdxMeanKa.SetParam(i,mean[i]);
632 fdEdxRMSKa.SetParam(i,sigma[i]);
636 for(Int_t i=0; i<knTotBins; i++) {
637 fdEdxMeanPr.SetParam(i,mean[i]);
638 fdEdxRMSPr.SetParam(i,sigma[i]);
642 for(Int_t i=0; i<knTotBins; i++) {
643 fdEdxMeanEl.SetParam(i,mean[i]);
644 fdEdxRMSEl.SetParam(i,sigma[i]);
648 for(Int_t i=0; i<knTotBins; i++) {
649 fdEdxMeanMu.SetParam(i,mean[i]);
650 fdEdxRMSMu.SetParam(i,sigma[i]);
655 // write results to file
656 WritedEdx(outName,pdg);
666 //-----------------------------------------------------------------------------
667 void AliTPCtrackerParam::AnalyzePulls(const Char_t *outName) {
668 //-----------------------------------------------------------------------------
669 // This function computes the pulls for pions, kaons and electrons,
670 // in the [pT,eta] bins.
671 // Input file is CovMatrix_AllEvts.root.
672 // Output file is pulls.root.
673 //-----------------------------------------------------------------------------
676 // create a chain with compared tracks
677 TChain *cmptrkchain = new ("cmptrktree");
678 cmptrkchain.Add("CovMatrix_AllEvts.root");
679 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
680 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
681 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
685 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
686 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
689 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
690 Int_t entries = (Int_t)cmptrktree->GetEntries();
691 cerr<<" Number of entries: "<<entries<<endl;
694 Char_t hname[100], htitle[100];
697 AliTPCkineGrid pulls[5];
698 TH1F *hDum = new TH1F("name","title",100,-7.,7.);
699 TF1 *g = new TF1("g","gaus");
701 InitializeKineGrid("pulls");
702 InitializeKineGrid("DB");
706 // loop on the particles Pi,Ka,Pr,El,Mu
707 for(Int_t part=0; part<5; part++) {
712 cerr<<" Processing pions ...\n";
716 cerr<<" Processing kaons ...\n";
720 cerr<<" Processing protons ...\n";
724 cerr<<" Processing electrons ...\n";
728 cerr<<" Processing muons ...\n";
732 SetParticle(thisPdg);
734 for(Int_t i=0;i<5;i++) {
735 pulls[i].~AliTPCkineGrid();
736 new(&pulls[i]) AliTPCkineGrid(*(fPulls+i));
738 nTotBins = fDBgrid->GetTotBins();
739 cerr<<"nTotBins = "<<nTotBins<<endl;
741 // create histograms for the all the bins
748 hPulls0 = new TH1F[nTotBins];
749 hPulls1 = new TH1F[nTotBins];
750 hPulls2 = new TH1F[nTotBins];
751 hPulls3 = new TH1F[nTotBins];
752 hPulls4 = new TH1F[nTotBins];
755 for(Int_t i=0; i<nTotBins; i++) {
756 sprintf(hname,"hPulls0%d",i);
757 sprintf(htitle,"P0 pulls for bin %d",i);
758 hDum->SetName(hname); hDum->SetTitle(htitle);
760 sprintf(hname,"hPulls1%d",i);
761 sprintf(htitle,"P1 pulls for bin %d",i);
762 hDum->SetName(hname); hDum->SetTitle(htitle);
764 sprintf(hname,"hPulls2%d",i);
765 sprintf(htitle,"P2 pulls for bin %d",i);
766 hDum->SetName(hname); hDum->SetTitle(htitle);
768 sprintf(hname,"hPulls3%d",i);
769 sprintf(htitle,"P3 pulls for bin %d",i);
770 hDum->SetName(hname); hDum->SetTitle(htitle);
772 sprintf(hname,"hPulls4%d",i);
773 sprintf(htitle,"P4 pulls for bin %d",i);
774 hDum->SetName(hname); hDum->SetTitle(htitle);
778 // loop on chain entries
779 for(Int_t i=0; i<entries; i++) {
780 cmptrktree->GetEvent(i);
781 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
782 // fill histograms with the pulls
783 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
784 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
785 hPulls0[bin].Fill(cmptrk.dP0/TMath::Sqrt(cmptrk.c00));
786 hPulls1[bin].Fill(cmptrk.dP1/TMath::Sqrt(cmptrk.c11));
787 hPulls2[bin].Fill(cmptrk.dP2/TMath::Sqrt(cmptrk.c22));
788 hPulls3[bin].Fill(cmptrk.dP3/TMath::Sqrt(cmptrk.c33));
789 hPulls4[bin].Fill(cmptrk.dP4/TMath::Sqrt(cmptrk.c44));
790 } // loop on chain entries
792 // compute the sigma of the distributions
793 for(Int_t i=0; i<nTotBins; i++) {
794 if(hPulls0[i].GetEntries()>10) {
795 g->SetRange(-3.*hPulls0[i].GetRMS(),3.*hPulls0[i].GetRMS());
796 hPulls0[i].Fit("g","R,Q,N");
797 pulls[0].SetParam(i,g->GetParameter(2));
798 } else pulls[0].SetParam(i,-1.);
799 if(hPulls1[i].GetEntries()>10) {
800 g->SetRange(-3.*hPulls1[i].GetRMS(),3.*hPulls1[i].GetRMS());
801 hPulls1[i].Fit("g","R,Q,N");
802 pulls[1].SetParam(i,g->GetParameter(2));
803 } else pulls[1].SetParam(i,-1.);
804 if(hPulls2[i].GetEntries()>10) {
805 g->SetRange(-3.*hPulls2[i].GetRMS(),3.*hPulls2[i].GetRMS());
806 hPulls2[i].Fit("g","R,Q,N");
807 pulls[2].SetParam(i,g->GetParameter(2));
808 } else pulls[2].SetParam(i,-1.);
809 if(hPulls3[i].GetEntries()>10) {
810 g->SetRange(-3.*hPulls3[i].GetRMS(),3.*hPulls3[i].GetRMS());
811 hPulls3[i].Fit("g","R,Q,N");
812 pulls[3].SetParam(i,g->GetParameter(2));
813 } else pulls[3].SetParam(i,-1.);
814 if(hPulls4[i].GetEntries()>10) {
815 g->SetRange(-3.*hPulls4[i].GetRMS(),3.*hPulls4[i].GetRMS());
816 hPulls4[i].Fit("g","R,Q,N");
817 pulls[4].SetParam(i,g->GetParameter(2));
818 } else pulls[4].SetParam(i,-1.);
824 for(Int_t i=0;i<5;i++) {
825 fPullsPi[i].~AliTPCkineGrid();
826 new(&fPullsPi[i]) AliTPCkineGrid(pulls[i]);
830 for(Int_t i=0;i<5;i++) {
831 fPullsKa[i].~AliTPCkineGrid();
832 new(&fPullsKa[i]) AliTPCkineGrid(pulls[i]);
836 for(Int_t i=0;i<5;i++) {
837 fPullsPr[i].~AliTPCkineGrid();
838 new(&fPullsPr[i]) AliTPCkineGrid(pulls[i]);
842 for(Int_t i=0;i<5;i++) {
843 fPullsEl[i].~AliTPCkineGrid();
844 new(&fPullsEl[i]) AliTPCkineGrid(pulls[i]);
848 for(Int_t i=0;i<5;i++) {
849 fPullsMu[i].~AliTPCkineGrid();
850 new(&fPullsMu[i]) AliTPCkineGrid(pulls[i]);
851 //cerr<<" mu pulls "<<i<<" "<<fPullsMu[i].GetParam(0)<<endl;
862 } // loop on particle species
864 // write pulls to file
870 //-----------------------------------------------------------------------------
871 void AliTPCtrackerParam::AnalyzeResolutions(Int_t pdg) {
872 //-----------------------------------------------------------------------------
873 // This function computes the resolutions:
877 // as a function of Pt
878 // Input file is CovMatrix_AllEvts.root.
879 //-----------------------------------------------------------------------------
882 // create a chain with compared tracks
883 TChain *cmptrkchain = new ("cmptrktree");
884 cmptrkchain.Add("CovMatrix_AllEvts.root");
885 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
886 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
887 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
891 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
892 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
895 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
896 Int_t entries = (Int_t)cmptrktree->GetEntries();
897 cerr<<" Number of entries: "<<entries<<endl;
902 InitializeKineGrid("DB");
903 InitializeKineGrid("eff");
907 const Int_t knPtBins = fEff->GetPointsPt();
908 cerr<<"knPtBins = "<<knPtBins<<endl;
909 Double_t *dP0 = new Double_t[knPtBins];
910 Double_t *dP4 = new Double_t[knPtBins];
911 Double_t *dPtToPt = new Double_t[knPtBins];
912 Double_t *pt = new Double_t[knPtBins];
913 fEff->GetArrayPt(pt);
916 TH1F *hDumP0 = new TH1F("nameP0","dy",100,-0.3,0.3);
917 TH1F *hDumP4 = new TH1F("nameP4","dC",100,-0.0005,0.0005);
918 TH1F *hDumPt = new TH1F("namePt","dp_{T}/p_{T}",100,-0.5,0.5);
920 TF1 *g = new TF1("g","gaus");
922 // create histograms for the all the bins
927 hP0 = new TH1F[knPtBins];
928 hP4 = new TH1F[knPtBins];
929 hPt = new TH1F[knPtBins];
931 for(Int_t i=0; i<knPtBins; i++) {
937 // loop on chain entries
938 for(Int_t i=0; i<entries; i++) {
939 cmptrktree->GetEvent(i);
940 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
941 // fill histograms with the residuals
942 bin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
943 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
944 hP0[bin].Fill(cmptrk.dP0);
945 hP4[bin].Fill(cmptrk.dP4);
946 hPt[bin].Fill(cmptrk.dpt/cmptrk.pt);
947 } // loop on chain entries
950 TCanvas *cP0res = new TCanvas("cP0res","cP0res",0,0,1200,700);
952 TCanvas *cP4res = new TCanvas("cP4res","cP4res",0,0,1200,700);
954 TCanvas *cPtres = new TCanvas("cPtres","cPtres",0,0,1200,700);
958 for(Int_t i=0; i<knPtBins; i++) {
959 cP0res->cd(i+1); hP0[i].Draw();
960 cP4res->cd(i+1); hP4[i].Draw();
961 cPtres->cd(i+1); hPt[i].Draw();
965 // compute the sigma of the distributions
966 for(Int_t i=0; i<knPtBins; i++) {
967 if(hP0[i].GetEntries()>10) {
968 g->SetRange(-3.*hP0[i].GetRMS(),3.*hP0[i].GetRMS());
969 hP0[i].Fit("g","R,Q,N");
970 dP0[i] = g->GetParameter(2);
972 if(hP4[i].GetEntries()>10) {
973 g->SetRange(-3.*hP4[i].GetRMS(),3.*hP4[i].GetRMS());
974 hP4[i].Fit("g","R,Q,N");
975 dP4[i] = g->GetParameter(2);
977 if(hPt[i].GetEntries()>10) {
978 g->SetRange(-3.*hPt[i].GetRMS(),3.*hPt[i].GetRMS());
979 hPt[i].Fit("g","R,Q,N");
980 dPtToPt[i] = 100.*g->GetParameter(2);
981 } else dPtToPt[i] = 0.;
985 TGraph *grdP0 = new TGraph(knPtBins,pt,dP0);
986 TGraph *grdP4 = new TGraph(knPtBins,pt,dP4);
987 TGraph *grdPtToPt = new TGraph(knPtBins,pt,dPtToPt);
989 grdP0->SetMarkerStyle(20); grdP0->SetMarkerColor(2); grdP0->SetMarkerSize(1.5);
990 grdP4->SetMarkerStyle(21); grdP4->SetMarkerColor(3); grdP4->SetMarkerSize(1.5);
991 grdPtToPt->SetMarkerStyle(22); grdPtToPt->SetMarkerColor(4); grdPtToPt->SetMarkerSize(1.5);
994 gStyle->SetOptStat(0);
995 TCanvas *c1 = new TCanvas("c1","dP0",0,0,900,700);
1000 TH2F *frame1 = new TH2F("frame1","y resolution VS p_{T} in TPC",2,0.1,30,2,0,0.1);
1001 frame1->SetXTitle("p_{T} [GeV/c]");
1002 frame1->SetYTitle("#sigma(y) [cm]");
1007 TCanvas *c2 = new TCanvas("c2","dP4",0,0,900,700);
1012 TH2F *frame2 = new TH2F("frame2","C resolution VS p_{T} in TPC",2,0.1,30,2,0,0.0001);
1013 frame2->SetXTitle("p_{T} [GeV/c]");
1014 frame2->SetYTitle("#sigma(C) [1/cm]");
1018 TCanvas *c3 = new TCanvas("c3","dPtToPt",0,0,900,700);
1024 TH2F *frame3 = new TH2F("frame3","Relative p_{T} resolution VS p_{T} in TPC",2,0.1,30,2,0.1,30.);
1025 frame3->SetXTitle("p_{T} [GeV/c]");
1026 frame3->SetYTitle("dp_{T}/p_{T} (%)");
1028 grdPtToPt->Draw("P");
1043 //-----------------------------------------------------------------------------
1044 void AliTPCtrackerParam::BuildTrack(AliTPCseedGeant *s,Int_t ch) {
1045 //-----------------------------------------------------------------------------
1046 // This function uses GEANT info to set true track parameters
1047 //-----------------------------------------------------------------------------
1048 Double_t xref = s->GetXL();
1049 Double_t xx[5],cc[15];
1050 cc[0]=cc[2]=cc[5]=cc[9]=cc[14]=0.;
1051 cc[1]=cc[3]=cc[4]=cc[6]=cc[7]=cc[8]=cc[10]=cc[11]=cc[12]=cc[13]=0.;
1054 TVector3 bfield(0.,0.,-fBz);
1057 // radius [cm] of track projection in (x,y)
1058 Double_t rho = s->GetPt()*100./0.299792458/TMath::Abs(bfield.Z());
1059 // center of track projection in local reference frame
1063 // position (local) and momentum (local) at the seed
1064 // in the bending plane (z=0)
1065 sPos.SetXYZ(s->GetXL(),s->GetYL(),0.);
1066 sMom.SetXYZ(s->GetPx()*TMath::Cos(s->GetAlpha())+s->GetPy()*TMath::Sin(s->GetAlpha()),-s->GetPx()*TMath::Sin(s->GetAlpha())+s->GetPy()*TMath::Cos(s->GetAlpha()),0.);
1067 TVector3 vrho = sMom.Cross(bfield);
1071 TVector3 vcenter = sPos+vrho;
1073 Double_t x0 = vcenter.X();
1075 // fX = xref X-coordinate of this track (reference plane)
1076 // fAlpha = Alpha Rotation angle the local (TPC sector)
1077 // fP0 = YL Y-coordinate of a track
1078 // fP1 = ZG Z-coordinate of a track
1079 // fP2 = sin(phi) sine of the (local) azimuthal angle
1080 // fP3 = Tgl tangent of the track momentum dip angle
1081 // fP4 = C track curvature
1084 xx[2] = ch/rho*(xref-x0);
1085 xx[3] = s->GetPz()/s->GetPt();
1088 // create the object AliTPCtrack
1089 AliTPCtrack track(xref,s->GetAlpha(),xx,cc,0);
1090 new(&fTrack) AliTPCtrack(track);
1094 //-----------------------------------------------------------------------------
1095 void AliTPCtrackerParam::CompareTPCtracks(
1097 const Char_t* galiceName,
1098 const Char_t* trkGeaName,
1099 const Char_t* trkKalName,
1100 const Char_t* covmatName,
1101 const Char_t* tpceffasciiName,
1102 const Char_t* tpceffrootName) {
1103 //-----------------------------------------------------------------------------
1104 // This function compares tracks from TPC Kalman Filter V2 with
1105 // geant tracks at TPC 1st hit. It gives:
1106 // - a tree with Kalman cov. matrix elements, resolutions, dEdx
1107 // - the efficiencies as a function of particle type, pT, eta
1108 //-----------------------------------------------------------------------------
1110 TFile *kalFile = TFile::Open(trkKalName);
1111 TFile *geaFile = TFile::Open(trkGeaName);
1112 TFile *galiceFile = TFile::Open(galiceName);
1114 // get the AliRun object
1115 AliRun *gAlice = (AliRun*)galiceFile->Get("gAlice");
1118 // create the tree for comparison results
1120 TTree *cmptrktree = new TTree("cmptrktree","results of track comparison");
1121 cmptrktree->Branch("comptracks",&cmptrk,"pdg/I:bin:r/D:p:pt:cosl:eta:dpt:dP0:dP1:dP2:dP3:dP4:c00:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44:dEdx");
1123 InitializeKineGrid("eff");
1124 InitializeKineGrid("DB");
1125 Int_t effBins = fEffPi.GetTotPoints();
1126 Int_t effBinsPt = fEffPi.GetPointsPt();
1127 Double_t *pt = new Double_t[effBinsPt];
1128 fEffPi.GetArrayPt(pt);
1135 Int_t pi=0,ka=0,mu=0,el=0,pr=0;
1136 Int_t *geaPi = new Int_t[effBins];
1137 Int_t *geaKa = new Int_t[effBins];
1138 Int_t *geaPr = new Int_t[effBins];
1139 Int_t *geaEl = new Int_t[effBins];
1140 Int_t *geaMu = new Int_t[effBins];
1141 Int_t *kalPi = new Int_t[effBins];
1142 Int_t *kalKa = new Int_t[effBins];
1143 Int_t *kalPr = new Int_t[effBins];
1144 Int_t *kalEl = new Int_t[effBins];
1145 Int_t *kalMu = new Int_t[effBins];
1146 Float_t *effPi = new Float_t[effBins];
1147 Float_t *effKa = new Float_t[effBins];
1148 Float_t *effPr = new Float_t[effBins];
1149 Float_t *effEl = new Float_t[effBins];
1150 Float_t *effMu = new Float_t[effBins];
1152 for(Int_t j=0; j<effBins; j++) {
1153 geaPi[j]=geaKa[j]=geaPr[j]=geaEl[j]=geaMu[j]=0;
1154 kalPi[j]=kalKa[j]=kalPr[j]=kalEl[j]=kalMu[j]=0;
1155 effPi[j]=effKa[j]=effPr[j]=effEl[j]=effMu[j]=-1.;
1160 // loop on events in file
1161 for(Int_t evt=0; evt<nEvents; evt++) {
1162 cerr<<"\n --- Reading tracks for event "<<evt<<" ---\n\n";
1163 sprintf(tname,"TreeT_TPC_%d",evt);
1165 // particles from TreeK
1166 const Int_t knparticles = gAlice->GetEvent(evt);
1168 Int_t *kalLab = new Int_t[knparticles];
1169 for(Int_t i=0; i<knparticles; i++) kalLab[i] = -1;
1172 // tracks from Kalman
1173 TTree *kaltree=(TTree*)kalFile->Get(tname);
1174 if(!kaltree) continue;
1175 AliTPCtrack *kaltrack=new AliTPCtrack;
1176 kaltree->SetBranchAddress("tracks",&kaltrack);
1177 Int_t kalEntries = (Int_t)kaltree->GetEntries();
1179 // tracks from 1st hit
1180 TTree *geatree=(TTree*)geaFile->Get(tname);
1181 if(!geatree) continue;
1182 AliTPCtrack *geatrack=new AliTPCtrack;
1183 geatree->SetBranchAddress("tracks",&geatrack);
1184 Int_t geaEntries = (Int_t)geatree->GetEntries();
1186 cerr<<"+++\n+++ Number of tracks: TPC Kalman = "<<kalEntries<<endl<<"+++ TPC 1st hit = "<<geaEntries<<endl<<"+++\n";
1188 // set pointers for TPC tracks:
1189 // the entry number of the track labelled l is stored in kalLab[l]
1190 Int_t fake=0,mult=0;
1191 for (Int_t j=0; j<kalEntries; j++) {
1192 kaltree->GetEvent(j);
1193 if(kaltrack->GetLabel()>=0) {
1194 if(kalLab[kaltrack->GetLabel()]!=-1) mult++;
1195 kalLab[kaltrack->GetLabel()] = j;
1200 cerr<<"+++ Number of fake tracks in TPC Kalman: "<<fake<<endl;
1201 cerr<<"+++ Number of multiply found tracks in TPC Kalman: "<<mult<<endl;
1204 // Read the labels of the seeds
1207 Bool_t *hasSeed = new Bool_t[knparticles];
1208 for(Int_t i=0; i<knparticles; i++) hasSeed[i] = kFALSE;
1209 sprintf(sname,"seedLabels.%d.dat",evt);
1210 FILE *seedFile = fopen(sname,"r");
1212 ncol = fscanf(seedFile,"%d",&sLabel);
1214 if(sLabel>0) hasSeed[sLabel]=kTRUE;
1219 cerr<<"Doing track comparison...\n";
1220 // loop on tracks at 1st hit
1221 for(Int_t j=0; j<geaEntries; j++) {
1222 geatree->GetEvent(j);
1224 label = geatrack->GetLabel();
1225 part = (TParticle*)gAlice->GetMCApp()->Particle(label);
1227 // use only injected tracks with fixed values of pT
1228 ptgener = part->Pt();
1230 for(Int_t l=0; l<fEffPi.GetPointsPt(); l++) {
1231 if(TMath::Abs(ptgener-pt[l])<0.01) usethis = kTRUE;
1233 if(!usethis) continue;
1235 // check if it has the seed
1236 //if(!hasSeed[label]) continue;
1239 // check if track is entirely contained in a TPC sector
1240 Bool_t out = kFALSE;
1241 for(Int_t l=0; l<10; l++) {
1242 Double_t x = 85. + (250.-85.)*(Double_t)l/9.;
1243 //cerr<<"x "<<x<<" X "<<geatrack->GetX()<<endl;
1244 Double_t y = geatrack->GetY() + (
1245 TMath::Sqrt(1-(geatrack->GetC()*geatrack->GetX()-geatrack->GetEta())*
1246 (geatrack->GetC()*geatrack->GetX()-geatrack->GetEta()))
1247 -TMath::Sqrt(1-(geatrack->GetC()*x-geatrack->GetEta())*
1248 (geatrack->GetC()*x-geatrack->GetEta()))
1251 //cerr<<"y "<<y<<" Y "<<geatrack->GetY()<<endl;
1252 if(y > 0.8*x*TMath::Tan(TMath::Pi()/18)) { out = kTRUE; break; }
1257 cmptrk.pdg = part->GetPdgCode();
1258 cmptrk.eta = part->Eta();
1259 cmptrk.r = TMath::Sqrt(part->Vx()*part->Vx()+part->Vy()*part->Vy());
1261 cmptrk.pt = 1/TMath::Abs(geatrack->Get1Pt());
1262 cmptrk.cosl = TMath::Cos(TMath::ATan(geatrack->GetTgl()));
1263 cmptrk.p = cmptrk.pt/cmptrk.cosl;
1266 bin = fDBgridPi.GetBin(cmptrk.pt,cmptrk.eta);
1268 if(abs(cmptrk.pdg)==211) geaPi[bin]++;
1269 if(abs(cmptrk.pdg)==321) geaKa[bin]++;
1270 if(abs(cmptrk.pdg)==2212) geaPr[bin]++;
1271 if(abs(cmptrk.pdg)==11) geaEl[bin]++;
1272 if(abs(cmptrk.pdg)==13) geaMu[bin]++;
1275 // check if there is the corresponding track in the TPC kalman and get it
1276 if(kalLab[label]==-1) continue;
1277 kaltree->GetEvent(kalLab[label]);
1279 // and go on only if it has xref = 84.57 cm (inner pad row)
1280 if(kaltrack->GetX()>90.) continue;
1282 if(abs(cmptrk.pdg)==211) { kalPi[bin]++; pi++; }
1283 if(abs(cmptrk.pdg)==321) { kalKa[bin]++; ka++; }
1284 if(abs(cmptrk.pdg)==2212) { kalPr[bin]++; pr++; }
1285 if(abs(cmptrk.pdg)==11) { kalEl[bin]++; el++; }
1286 if(abs(cmptrk.pdg)==13) { kalMu[bin]++; mu++; }
1288 kaltrack->PropagateTo(geatrack->GetX(),1.e-9,0.);
1290 cmptrk.dEdx = kaltrack->GetdEdx();
1292 // compute errors on parameters
1293 dAlpha = kaltrack->GetAlpha()-geatrack->GetAlpha();
1294 if(TMath::Abs(dAlpha)>0.1) { cerr<<" ! WRONG SECTOR !\n"; continue; }
1296 cmptrk.dP0 = kaltrack->GetY()-geatrack->GetY();
1297 cmptrk.dP1 = kaltrack->GetZ()-geatrack->GetZ();
1298 cmptrk.dP2 = kaltrack->GetSnp()-geatrack->GetSnp();
1299 cmptrk.dP3 = kaltrack->GetTgl()-geatrack->GetTgl();
1300 cmptrk.dP4 = kaltrack->GetC()-geatrack->GetC();
1301 cmptrk.dpt = 1/kaltrack->Get1Pt()-1/geatrack->Get1Pt();
1303 // get covariance matrix
1304 // beware: lines 3 and 4 in the matrix are inverted!
1305 //kaltrack->GetCovariance(cc);
1307 cmptrk.c00 = kaltrack->GetSigmaY2();
1308 cmptrk.c10 = kaltrack->GetSigmaZY();
1309 cmptrk.c11 = kaltrack->GetSigmaZ2();
1310 cmptrk.c20 = kaltrack->GetSigmaSnpY();
1311 cmptrk.c21 = kaltrack->GetSigmaSnpY();
1312 cmptrk.c22 = kaltrack->GetSigmaSnp2();
1313 cmptrk.c30 = kaltrack->GetSigmaTglY();
1314 cmptrk.c31 = kaltrack->GetSigmaTglZ();
1315 cmptrk.c32 = kaltrack->GetSigmaTglSnp();
1316 cmptrk.c33 = kaltrack->GetSigmaTgl2();
1317 cmptrk.c40 = kaltrack->GetSigma1PtY();
1318 cmptrk.c41 = kaltrack->GetSigma1PtZ();
1319 cmptrk.c42 = kaltrack->GetSigma1PtSnp();
1320 cmptrk.c43 = kaltrack->GetSigma1PtTgl();
1321 cmptrk.c44 = kaltrack->GetSigma1Pt2();
1326 } // loop on tracks at TPC 1st hit
1329 //delete [] hasSeed;
1331 } // end loop on events in file
1334 cerr<<"+++\n+++ Number of compared tracks: "<<pi+ka+el+mu+pr<<endl;
1335 cerr<<"+++ Pions: "<<pi<<", Kaons: "<<ka<<", Protons : "<<pr<<", Electrons: "<<el<<", Muons: "<<mu<<endl;
1338 // Write tree to file
1339 TFile *outfile = new TFile(covmatName,"recreate");
1340 cmptrktree->Write();
1344 // Write efficiencies to ascii file
1345 FILE *effFile = fopen(tpceffasciiName,"w");
1346 //fprintf(effFile,"%d\n",kalEntries);
1347 for(Int_t j=0; j<effBins; j++) {
1348 if(geaPi[j]>=100) effPi[j]=(Float_t)kalPi[j]/geaPi[j];
1349 if(geaKa[j]>=100) effKa[j]=(Float_t)kalKa[j]/geaKa[j];
1350 if(geaPr[j]>=100) effPr[j]=(Float_t)kalPr[j]/geaPr[j];
1351 if(geaEl[j]>=500) effEl[j]=(Float_t)kalEl[j]/geaEl[j];
1352 if(geaMu[j]>=100) effMu[j]=(Float_t)kalMu[j]/geaMu[j];
1353 fprintf(effFile,"%f %f %f %f %f\n",effPi[j],effKa[j],effPr[j],effEl[j],effMu[j]);
1356 for(Int_t j=0; j<effBins; j++) {
1357 fprintf(effFile,"%d %d %d %d %d\n",geaPi[j],geaKa[j],geaPr[j],geaEl[j],geaMu[j]);
1359 for(Int_t j=0; j<effBins; j++) {
1360 fprintf(effFile,"%d %d %d %d %d\n",kalPi[j],kalKa[j],kalPr[j],kalEl[j],kalMu[j]);
1364 // Write efficiencies to root file
1365 for(Int_t j=0; j<effBins; j++) {
1366 fEffPi.SetParam(j,(Double_t)effPi[j]);
1367 fEffKa.SetParam(j,(Double_t)effKa[j]);
1368 fEffPr.SetParam(j,(Double_t)effPr[j]);
1369 fEffEl.SetParam(j,(Double_t)effEl[j]);
1370 fEffMu.SetParam(j,(Double_t)effMu[j]);
1372 WriteEffs(tpceffrootName);
1374 // delete AliRun object
1375 delete gAlice; gAlice=0;
1377 // close all input files
1380 galiceFile->Close();
1401 //-----------------------------------------------------------------------------
1402 void AliTPCtrackerParam::CookdEdx(Double_t pt,Double_t eta) {
1403 //-----------------------------------------------------------------------------
1404 // This function assigns the track a dE/dx and makes a rough PID
1405 //-----------------------------------------------------------------------------
1407 Double_t mean = fdEdxMean->GetValueAt(pt,eta);
1408 Double_t rms = fdEdxRMS->GetValueAt(pt,eta);
1410 Double_t dEdx = gRandom->Gaus(mean,rms);
1412 fTrack.SetdEdx(dEdx);
1414 AliTPCtrackParam t(fTrack);
1417 Double_t p = TMath::Sqrt(1.+t.GetTgl()*t.GetTgl())*pt;
1419 Double_t massPi = (Double_t)TDatabasePDG::Instance()->GetParticle(211)->Mass();
1420 Double_t massKa = (Double_t)TDatabasePDG::Instance()->GetParticle(321)->Mass();
1421 Double_t massPr = (Double_t)TDatabasePDG::Instance()->GetParticle(2212)->Mass();
1424 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1425 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1427 if (dEdx < 39.+ 12./p/p) {
1428 t.AssignMass(massKa); new(&fTrack) AliTPCtrack(t); return;
1430 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1434 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1435 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1437 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1440 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1442 //-----------------------------------------------------------------------------
1443 void AliTPCtrackerParam::CookTrack(Double_t pt,Double_t eta) {
1444 //-----------------------------------------------------------------------------
1445 // This function deals with covariance matrix and smearing
1446 //-----------------------------------------------------------------------------
1450 Double_t trkKine[1],trkRegPar[3];
1451 Double_t xref,alpha,xx[5],xxsm[5],cc[15];
1454 fCovTree->SetBranchAddress("matrix",&covmat);
1456 // get random entry from the tree
1457 treeEntries = (Int_t)fCovTree->GetEntries();
1458 fCovTree->GetEvent(gRandom->Integer(treeEntries));
1460 // get P and Cosl from track
1461 cosl = TMath::Cos(TMath::ATan(fTrack.GetTgl()));
1462 p = 1./TMath::Abs(fTrack.Get1Pt())/cosl;
1466 // get covariance matrix from regularized matrix
1467 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(0,l);
1468 cc[0] = covmat.c00*RegFunc(trkKine,trkRegPar);
1470 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(1,l);
1471 cc[2] = covmat.c11*RegFunc(trkKine,trkRegPar);
1472 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(2,l);
1473 cc[3] = covmat.c20*RegFunc(trkKine,trkRegPar);
1475 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(3,l);
1476 cc[5] = covmat.c22*RegFunc(trkKine,trkRegPar);
1478 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(4,l);
1479 cc[7] = covmat.c31*RegFunc(trkKine,trkRegPar);
1481 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(5,l);
1482 cc[9] = covmat.c33*RegFunc(trkKine,trkRegPar);
1483 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(6,l);
1484 cc[10]= covmat.c40*RegFunc(trkKine,trkRegPar);
1486 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(7,l);
1487 cc[12]= covmat.c42*RegFunc(trkKine,trkRegPar);
1489 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(8,l);
1490 cc[14]= covmat.c44*RegFunc(trkKine,trkRegPar);
1493 TMatrixD covMatSmear(5,5);
1494 covMatSmear = GetSmearingMatrix(cc,pt,eta);
1496 // get track original parameters
1497 xref =fTrack.GetX();
1498 alpha=fTrack.GetAlpha();
1499 xx[0]=fTrack.GetY();
1500 xx[1]=fTrack.GetZ();
1501 xx[2]=fTrack.GetSnp();
1502 xx[3]=fTrack.GetTgl();
1503 xx[4]=fTrack.GetC();
1505 // use smearing matrix to smear the original parameters
1507 SmearTrack(xx,xxsm,covMatSmear);
1509 AliTPCtrack track(xref,alpha,xxsm,cc,0);
1510 new(&fTrack) AliTPCtrack(track);
1514 //-----------------------------------------------------------------------------
1515 void AliTPCtrackerParam::DrawEffs(const Char_t* inName,Int_t pdg) {
1516 //-----------------------------------------------------------------------------
1517 // This function draws the TPC efficiencies in the [pT,eta] bins
1518 //-----------------------------------------------------------------------------
1523 const Int_t kn = fEff->GetPointsPt();
1524 Double_t *effsA = new Double_t[kn];
1525 Double_t *effsB = new Double_t[kn];
1526 Double_t *effsC = new Double_t[kn];
1527 Double_t *pt = new Double_t[kn];
1529 fEff->GetArrayPt(pt);
1530 for(Int_t i=0;i<kn;i++) {
1531 effsA[i] = fEff->GetParam(i,0);
1532 effsB[i] = fEff->GetParam(i,1);
1533 effsC[i] = fEff->GetParam(i,2);
1536 TGraph *grA = new TGraph(kn,pt,effsA);
1537 TGraph *grB = new TGraph(kn,pt,effsB);
1538 TGraph *grC = new TGraph(kn,pt,effsC);
1540 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1541 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1542 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1544 TString title("Distribution of the TPC efficiencies");
1547 title.Prepend("PIONS - ");
1550 title.Prepend("KAONS - ");
1553 title.Prepend("PROTONS - ");
1556 title.Prepend("ELECTRONS - ");
1559 title.Prepend("MUONS - ");
1564 gStyle->SetOptStat(0);
1565 TCanvas *c = new TCanvas("c","effs",0,0,900,700);
1570 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,1);
1571 frame->SetXTitle("p_{T} [GeV/c]");
1577 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1578 leg->AddEntry(grA,"|#eta|<0.3","p");
1579 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1580 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1581 leg->SetFillColor(0);
1591 //-----------------------------------------------------------------------------
1592 void AliTPCtrackerParam::DrawPulls(const Char_t* inName,Int_t pdg,
1594 //-----------------------------------------------------------------------------
1595 // This function draws the pulls in the [pT,eta] bins
1596 //-----------------------------------------------------------------------------
1601 const Int_t kn = (fPulls+par)->GetPointsPt();
1602 Double_t *pullsA = new Double_t[kn];
1603 Double_t *pullsB = new Double_t[kn];
1604 Double_t *pullsC = new Double_t[kn];
1605 Double_t *pt = new Double_t[kn];
1606 (fPulls+par)->GetArrayPt(pt);
1607 for(Int_t i=0;i<kn;i++) {
1608 pullsA[i] = (fPulls+par)->GetParam(i,0);
1609 pullsB[i] = (fPulls+par)->GetParam(i,1);
1610 pullsC[i] = (fPulls+par)->GetParam(i,2);
1613 TGraph *grA = new TGraph(kn,pt,pullsA);
1614 TGraph *grB = new TGraph(kn,pt,pullsB);
1615 TGraph *grC = new TGraph(kn,pt,pullsC);
1617 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1618 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1619 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1621 TString title("Distribution of the pulls: ");
1624 title.Prepend("PIONS - ");
1627 title.Prepend("KAONS - ");
1630 title.Prepend("PROTONS - ");
1633 title.Prepend("ELECTRONS - ");
1636 title.Prepend("MUONS - ");
1647 title.Append(" #eta");
1650 title.Append("tg #lambda");
1657 gStyle->SetOptStat(0);
1658 TCanvas *c = new TCanvas("c","pulls",0,0,900,700);
1663 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,2);
1664 frame->SetXTitle("p_{T} [GeV/c]");
1670 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1671 leg->AddEntry(grA,"|#eta|<0.3","p");
1672 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1673 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1674 leg->SetFillColor(0);
1684 //-----------------------------------------------------------------------------
1685 TMatrixD AliTPCtrackerParam::GetSmearingMatrix(Double_t* cc,Double_t pt,
1686 Double_t eta) const {
1687 //-----------------------------------------------------------------------------
1688 // This function stretches the covariance matrix according to the pulls
1689 //-----------------------------------------------------------------------------
1691 TMatrixD covMat(5,5);
1694 covMat(1,0)=cc[1]; covMat(0,1)=covMat(1,0);
1696 covMat(2,0)=cc[3]; covMat(0,2)=covMat(2,0);
1697 covMat(2,1)=cc[4]; covMat(1,2)=covMat(2,1);
1699 covMat(3,0)=cc[6]; covMat(0,3)=covMat(3,0);
1700 covMat(3,1)=cc[7]; covMat(1,3)=covMat(3,1);
1701 covMat(3,2)=cc[8]; covMat(2,3)=covMat(3,2);
1703 covMat(4,0)=cc[10]; covMat(0,4)=covMat(4,0);
1704 covMat(4,1)=cc[11]; covMat(1,4)=covMat(4,1);
1705 covMat(4,2)=cc[12]; covMat(2,4)=covMat(4,2);
1706 covMat(4,3)=cc[13]; covMat(3,4)=covMat(4,3);
1710 TMatrixD stretchMat(5,5);
1711 for(Int_t k=0;k<5;k++) {
1712 for(Int_t l=0;l<5;l++) {
1717 for(Int_t i=0;i<5;i++) {
1718 stretchMat(i,i) = (fPulls+i)->GetValueAt(pt,eta);
1719 if(stretchMat(i,i)==0.) stretchMat(i,i) = 1.;
1722 TMatrixD mat(stretchMat,TMatrixD::kMult,covMat);
1723 TMatrixD covMatSmear(mat,TMatrixD::kMult,stretchMat);
1727 //-----------------------------------------------------------------------------
1728 void AliTPCtrackerParam::InitializeKineGrid(Option_t* which) {
1729 //-----------------------------------------------------------------------------
1730 // This function initializes ([pt,eta] points) the data members AliTPCkineGrid
1731 // which = "DB" -> initialize fDBgrid... members
1732 // "eff" -> initialize fEff... members
1733 // "pulls" -> initialize fPulls... members
1734 // "dEdx" -> initialize fdEdx... members
1735 //-----------------------------------------------------------------------------
1737 const char *db = strstr(which,"DB");
1738 const char *eff = strstr(which,"eff");
1739 const char *pulls = strstr(which,"pulls");
1740 const char *dEdx = strstr(which,"dEdx");
1743 Int_t nEta=0, nPt=0;
1745 Double_t etaPoints[2] = {0.3,0.6};
1746 Double_t etaBins[3] = {0.15,0.45,0.75};
1748 Double_t ptPoints[9] = {0.4,0.6,0.8,1.2,1.7,3.,5.,8.,15.};
1749 Double_t ptBins[10] = {0.3,0.5,0.7,1.,1.5,2.,4.,6.,10.,20.};
1752 Double_t *eta=0,*pt=0;
1766 AliTPCkineGrid *dummy=0;
1769 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1770 new(&fDBgridPi) AliTPCkineGrid(*dummy);
1771 new(&fDBgridKa) AliTPCkineGrid(*dummy);
1772 new(&fDBgridPr) AliTPCkineGrid(*dummy);
1773 new(&fDBgridEl) AliTPCkineGrid(*dummy);
1774 new(&fDBgridMu) AliTPCkineGrid(*dummy);
1778 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1779 new(&fEffPi) AliTPCkineGrid(*dummy);
1780 new(&fEffKa) AliTPCkineGrid(*dummy);
1781 new(&fEffPr) AliTPCkineGrid(*dummy);
1782 new(&fEffEl) AliTPCkineGrid(*dummy);
1783 new(&fEffMu) AliTPCkineGrid(*dummy);
1787 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1788 for(Int_t i=0;i<5;i++) new(&fPullsPi[i]) AliTPCkineGrid(*dummy);
1789 for(Int_t i=0;i<5;i++) new(&fPullsKa[i]) AliTPCkineGrid(*dummy);
1790 for(Int_t i=0;i<5;i++) new(&fPullsPr[i]) AliTPCkineGrid(*dummy);
1791 for(Int_t i=0;i<5;i++) new(&fPullsEl[i]) AliTPCkineGrid(*dummy);
1792 for(Int_t i=0;i<5;i++) new(&fPullsMu[i]) AliTPCkineGrid(*dummy);
1796 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1797 new(&fdEdxMeanPi) AliTPCkineGrid(*dummy);
1798 new(&fdEdxRMSPi) AliTPCkineGrid(*dummy);
1799 new(&fdEdxMeanKa) AliTPCkineGrid(*dummy);
1800 new(&fdEdxRMSKa) AliTPCkineGrid(*dummy);
1801 new(&fdEdxMeanPr) AliTPCkineGrid(*dummy);
1802 new(&fdEdxRMSPr) AliTPCkineGrid(*dummy);
1803 new(&fdEdxMeanEl) AliTPCkineGrid(*dummy);
1804 new(&fdEdxRMSEl) AliTPCkineGrid(*dummy);
1805 new(&fdEdxMeanMu) AliTPCkineGrid(*dummy);
1806 new(&fdEdxRMSMu) AliTPCkineGrid(*dummy);
1812 //-----------------------------------------------------------------------------
1813 void AliTPCtrackerParam::MakeDataBase() {
1814 //-----------------------------------------------------------------------------
1815 // This function creates the DB file and store in it:
1816 // - TPC Efficiencies for pi,ka,pr,el,mu (AliTPCkineGrid class)
1817 // - Pulls for pi,ka,el (AliTPCkineGrid class)
1818 // - Regularization parameters for pi,ka,el (TMatrixD class)
1819 // - dE/dx parameterization for pi,ka,pr,el (AliTPCkineGrid class)
1820 // - Regularized cov. matrices for pi,ka,el (COVMATRIX structure)
1821 //-----------------------------------------------------------------------------
1823 // define some file names
1824 const char *effFile ="TPCeff.root";
1825 const char *pullsFile ="pulls.root";
1826 const char *regPiFile ="regPi.root";
1827 const char *regKaFile ="regKa.root";
1828 const char *regPrFile ="regPr.root";
1829 const char *regElFile ="regEl.root";
1830 const char *regMuFile ="regMu.root";
1831 const char *dEdxPiFile="dEdxPi.root";
1832 const char *dEdxKaFile="dEdxKa.root";
1833 const char *dEdxPrFile="dEdxPr.root";
1834 const char *dEdxElFile="dEdxEl.root";
1835 const char *dEdxMuFile="dEdxMu.root";
1836 const char *cmFile ="CovMatrix_AllEvts.root";
1838 Char_t *cmFile1 ="CovMatrix_AllEvts_1.root";
1839 Char_t *cmFile2 ="CovMatrix_AllEvts_2.root";
1840 Char_t *cmFile3 ="CovMatrix_AllEvts_3.root";
1843 // store the effieciencies
1845 WriteEffs(fDBfileName.Data());
1848 ReadPulls(pullsFile);
1849 WritePulls(fDBfileName.Data());
1851 //store the regularization parameters
1852 ReadRegParams(regPiFile,211);
1853 WriteRegParams(fDBfileName.Data(),211);
1854 ReadRegParams(regKaFile,321);
1855 WriteRegParams(fDBfileName.Data(),321);
1856 ReadRegParams(regPrFile,2212);
1857 WriteRegParams(fDBfileName.Data(),2212);
1858 ReadRegParams(regElFile,11);
1859 WriteRegParams(fDBfileName.Data(),11);
1860 ReadRegParams(regMuFile,13);
1861 WriteRegParams(fDBfileName.Data(),13);
1863 // store the dEdx parameters
1864 ReaddEdx(dEdxPiFile,211);
1865 WritedEdx(fDBfileName.Data(),211);
1866 ReaddEdx(dEdxKaFile,321);
1867 WritedEdx(fDBfileName.Data(),321);
1868 ReaddEdx(dEdxPrFile,2212);
1869 WritedEdx(fDBfileName.Data(),2212);
1870 ReaddEdx(dEdxElFile,11);
1871 WritedEdx(fDBfileName.Data(),11);
1872 ReaddEdx(dEdxMuFile,13);
1873 WritedEdx(fDBfileName.Data(),13);
1877 // store the regularized covariance matrices
1879 InitializeKineGrid("DB");
1881 const Int_t knBinsPi = fDBgridPi.GetTotBins();
1882 const Int_t knBinsKa = fDBgridKa.GetTotBins();
1883 const Int_t knBinsPr = fDBgridPr.GetTotBins();
1884 const Int_t knBinsEl = fDBgridEl.GetTotBins();
1885 const Int_t knBinsMu = fDBgridMu.GetTotBins();
1888 // create the trees for cov. matrices
1890 TTree *covTreePi1 = NULL;
1891 covTreePi1 = new TTree[knBinsPi];
1893 TTree *covTreeKa1 = NULL;
1894 covTreeKa1 = new TTree[knBinsKa];
1895 // trees for protons
1896 TTree *covTreePr1 = NULL;
1897 covTreePr1 = new TTree[knBinsPr];
1898 // trees for electrons
1899 TTree *covTreeEl1 = NULL;
1900 covTreeEl1 = new TTree[knBinsEl];
1902 TTree *covTreeMu1 = NULL;
1903 covTreeMu1 = new TTree[knBinsMu];
1905 Char_t hname[100], htitle[100];
1909 for(Int_t i=0; i<knBinsPi; i++) {
1910 sprintf(hname,"CovTreePi_bin%d",i);
1911 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1912 covTreePi1[i].SetName(hname); covTreePi1[i].SetTitle(htitle);
1913 covTreePi1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",5000000);
1915 for(Int_t i=0; i<knBinsKa; i++) {
1916 sprintf(hname,"CovTreeKa_bin%d",i);
1917 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1918 covTreeKa1[i].SetName(hname); covTreeKa1[i].SetTitle(htitle);
1919 covTreeKa1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1921 for(Int_t i=0; i<knBinsPr; i++) {
1922 sprintf(hname,"CovTreePr_bin%d",i);
1923 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1924 covTreePr1[i].SetName(hname); covTreePr1[i].SetTitle(htitle);
1925 covTreePr1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1927 for(Int_t i=0; i<knBinsEl; i++) {
1928 sprintf(hname,"CovTreeEl_bin%d",i);
1929 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1930 covTreeEl1[i].SetName(hname); covTreeEl1[i].SetTitle(htitle);
1931 covTreeEl1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1933 for(Int_t i=0; i<knBinsMu; i++) {
1934 sprintf(hname,"CovTreeMu_bin%d",i);
1935 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1936 covTreeMu1[i].SetName(hname); covTreeMu1[i].SetTitle(htitle);
1937 covTreeMu1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1941 // create the chain with the compared tracks
1942 TChain *cmptrktree = new TChain("cmptrktree");
1943 cmptrkchain.Add(cmFile1);
1944 cmptrkchain.Add(cmFile2);
1945 cmptrkchain.Add(cmFile3);
1948 TFile *infile = TFile::Open(cmFile);
1949 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
1952 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
1953 Int_t entries = (Int_t)cmptrktree->GetEntries();
1954 cerr<<" Number of entries: "<<entries<<endl;
1956 Int_t trkPdg,trkBin;
1957 Double_t trkKine[1],trkRegPar[3];
1958 Int_t *nPerBinPi = new Int_t[knBinsPi];
1959 for(Int_t k=0;k<knBinsPi;k++) nPerBinPi[k]=0;
1960 Int_t *nPerBinKa = new Int_t[knBinsKa];
1961 for(Int_t k=0;k<knBinsKa;k++) nPerBinKa[k]=0;
1962 Int_t *nPerBinMu = new Int_t[knBinsMu];
1963 for(Int_t k=0;k<knBinsMu;k++) nPerBinMu[k]=0;
1964 Int_t *nPerBinEl = new Int_t[knBinsEl];
1965 for(Int_t k=0;k<knBinsEl;k++) nPerBinEl[k]=0;
1966 Int_t *nPerBinPr = new Int_t[knBinsPr];
1967 for(Int_t k=0;k<knBinsPr;k++) nPerBinPr[k]=0;
1969 // loop on chain entries
1970 for(Int_t l=0; l<entries; l++) {
1971 if(l % 10000 == 0) cerr<<"--- Processing track "<<l<<" of "<<entries<<" ---"<<endl;
1973 cmptrktree->GetEvent(l);
1975 trkPdg = TMath::Abs(cmptrk.pdg);
1976 // use only pions, kaons, protons, electrons, muons
1977 if(trkPdg!=211 && trkPdg!=321 && trkPdg!=2212 && trkPdg!=11 && trkPdg!=13) continue;
1978 SetParticle(trkPdg);
1979 trkBin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
1980 //cerr<<cmptrk.pt<<" "<<cmptrk.eta<<" "<<trkBin<<endl;
1982 if(trkPdg==211 && nPerBinPi[trkBin]>=5000) continue;
1983 if(trkPdg==321 && nPerBinKa[trkBin]>=5000) continue;
1984 if(trkPdg==2212 && nPerBinPr[trkBin]>=5000) continue;
1985 if(trkPdg==11 && nPerBinEl[trkBin]>=5000) continue;
1986 if(trkPdg==13 && nPerBinMu[trkBin]>=5000) continue;
1988 trkKine[0] = cmptrk.p;
1990 // get regularized covariance matrix
1991 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(0,k);
1992 covmat.c00 = cmptrk.c00/RegFunc(trkKine,trkRegPar);
1993 covmat.c10 = cmptrk.c10;
1994 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(1,k);
1995 covmat.c11 = cmptrk.c11/RegFunc(trkKine,trkRegPar);
1996 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(2,k);
1997 covmat.c20 = cmptrk.c20/RegFunc(trkKine,trkRegPar);
1998 covmat.c21 = cmptrk.c21;
1999 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(3,k);
2000 covmat.c22 = cmptrk.c22/RegFunc(trkKine,trkRegPar);
2001 covmat.c30 = cmptrk.c30;
2002 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(4,k);
2003 covmat.c31 = cmptrk.c31/RegFunc(trkKine,trkRegPar);
2004 covmat.c32 = cmptrk.c32;
2005 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(5,k);
2006 covmat.c33 = cmptrk.c33/RegFunc(trkKine,trkRegPar);
2007 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(6,k);
2008 covmat.c40 = cmptrk.c40/RegFunc(trkKine,trkRegPar);
2009 covmat.c41 = cmptrk.c41;
2010 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(7,k);
2011 covmat.c42 = cmptrk.c42/RegFunc(trkKine,trkRegPar);
2012 covmat.c43 = cmptrk.c43;
2013 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(8,k);
2014 covmat.c44 = cmptrk.c44/RegFunc(trkKine,trkRegPar);
2019 covTreePi1[trkBin].Fill();
2020 nPerBinPi[trkBin]++;
2023 covTreeKa1[trkBin].Fill();
2024 nPerBinKa[trkBin]++;
2026 case 2212: // protons
2027 covTreePr1[trkBin].Fill();
2028 nPerBinPr[trkBin]++;
2030 case 11: // electrons
2031 covTreeEl1[trkBin].Fill();
2032 nPerBinEl[trkBin]++;
2035 covTreeMu1[trkBin].Fill();
2036 nPerBinMu[trkBin]++;
2039 } // loop on chain entries
2041 // store all trees the DB file
2042 TFile *dbfile = new TFile(fDBfileName.Data(),"update");
2043 dbfile->mkdir("CovMatrices");
2044 gDirectory->cd("/CovMatrices");
2045 gDirectory->mkdir("Pions");
2046 gDirectory->mkdir("Kaons");
2047 gDirectory->mkdir("Protons");
2048 gDirectory->mkdir("Electrons");
2049 gDirectory->mkdir("Muons");
2051 gDirectory->cd("/CovMatrices/Pions");
2052 fDBgridPi.SetName("DBgridPi"); fDBgridPi.Write();
2053 for(Int_t i=0;i<knBinsPi;i++) covTreePi1[i].Write();
2055 gDirectory->cd("/CovMatrices/Kaons");
2056 fDBgridKa.SetName("DBgridKa"); fDBgridKa.Write();
2057 for(Int_t i=0;i<knBinsKa;i++) covTreeKa1[i].Write();
2059 gDirectory->cd("/CovMatrices/Protons");
2060 fDBgridPr.SetName("DBgridPr"); fDBgridPr.Write();
2061 for(Int_t i=0;i<knBinsPr;i++) covTreePr1[i].Write();
2063 gDirectory->cd("/CovMatrices/Electrons");
2064 fDBgridEl.SetName("DBgridEl"); fDBgridEl.Write();
2065 for(Int_t i=0;i<knBinsEl;i++) covTreeEl1[i].Write();
2067 gDirectory->cd("/CovMatrices/Muons");
2068 fDBgridMu.SetName("DBgridMu"); fDBgridMu.Write();
2069 for(Int_t i=0;i<knBinsMu;i++) covTreeMu1[i].Write();
2072 delete [] nPerBinPi;
2073 delete [] nPerBinKa;
2074 delete [] nPerBinPr;
2075 delete [] nPerBinEl;
2076 delete [] nPerBinMu;
2080 //-----------------------------------------------------------------------------
2081 void AliTPCtrackerParam::MakeSeedsFromHits(AliTPC *tpc,TTree *th,
2082 TObjArray &seedArray) const {
2083 //-----------------------------------------------------------------------------
2084 // This function makes the seeds for tracks from the 1st hits in the TPC
2085 //-----------------------------------------------------------------------------
2087 Double_t xg,yg,zg,px,py,pz,pt;
2089 Int_t nTracks=(Int_t)th->GetEntries();
2091 cout<<"+++ Number of \"primary tracks\"(entries in TreeH): "<<nTracks<<
2094 AliTPChit *tpcHit=0;
2096 // loop over entries in TreeH
2097 for(Int_t l=0; l<nTracks; l++) {
2098 if(l%1000==0) cerr<<" --- Processing primary track "
2099 <<l<<" of "<<nTracks<<" ---\r";
2103 tpcHit=(AliTPChit*)tpc->FirstHit(-1);
2104 for( ; tpcHit; tpcHit=(AliTPChit*)tpc->NextHit() ) {
2105 if(tpcHit->fQ !=0.) continue;
2106 // Get particle momentum at hit
2107 px=tpcHit->X(); py=tpcHit->Y(); pz=tpcHit->Z();
2109 pt=TMath::Sqrt(px*px+py*py);
2110 // reject hits with Pt<mag*0.45 GeV/c
2111 if(pt<(fBz*0.45)) continue;
2114 label=tpcHit->Track();
2116 if((tpcHit=(AliTPChit*)tpc->NextHit())==0) break;
2117 if(tpcHit->fQ != 0.) continue;
2118 // Get global coordinates of hit
2119 xg=tpcHit->X(); yg=tpcHit->Y(); zg=tpcHit->Z();
2120 if(TMath::Sqrt(xg*xg+yg*yg)>90.) continue;
2123 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2125 // reject tracks which are not in the TPC acceptance
2126 if(!ioseed->InTPCAcceptance()) { delete ioseed; continue; }
2128 // put seed in array
2129 seedArray.AddLast(ioseed);
2132 } // loop over entries in TreeH
2136 //-----------------------------------------------------------------------------
2137 void AliTPCtrackerParam::MakeSeedsFromRefs(TTree *ttr,
2138 TObjArray &seedArray) const {
2139 //-----------------------------------------------------------------------------
2140 // This function makes the seeds for tracks from the track references
2141 //-----------------------------------------------------------------------------
2143 Double_t xg,yg,zg,px,py,pz,pt;
2147 TClonesArray *tkRefArray = new TClonesArray("AliTrackReference");
2149 TBranch *b =(TBranch*)ttr->GetBranch("TPC");
2150 if(!b) {cerr<<"TPC branch of TreeTR not found"<<endl; return; }
2151 b->SetAddress(&tkRefArray);
2152 Int_t nTkRef = (Int_t)b->GetEntries();
2153 cerr<<"+++ Number of entries in TreeTR(TPC): "<<nTkRef<<"\n";
2155 // loop on track references
2156 for(Int_t l=0; l<nTkRef; l++){
2157 //if(l%1000==0) cerr<<" --- Processing primary track "
2158 // <<l<<" of "<<nTkRef<<" ---\r";
2159 if(!b->GetEvent(l)) continue;
2160 nnn = tkRefArray->GetEntriesFast();
2162 if(nnn <= 0) continue;
2163 for(k=0; k<nnn; k++) {
2164 AliTrackReference *tkref = (AliTrackReference*)tkRefArray->UncheckedAt(k);
2172 label = tkref->GetTrack();
2174 pt=TMath::Sqrt(px*px+py*py);
2175 // reject hits with Pt<mag*0.45 GeV/c
2176 if(pt<(fBz*0.45)) continue;
2179 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2181 // reject if not at the inner part of TPC
2182 if(TMath::Abs(ioseed->GetXL()-83.8) > 0.2) {
2183 //cerr<<"not at TPC inner part: XL = "<<ioseed->GetXL()<<endl;
2184 delete ioseed; continue;
2187 // reject tracks which are not in the TPC acceptance
2188 if(!ioseed->InTPCAcceptance()) {
2189 delete ioseed; continue;
2192 // put seed in array
2193 seedArray.AddLast(ioseed);
2198 } // loop on track references
2205 //-----------------------------------------------------------------------------
2206 void AliTPCtrackerParam::MergeEvents(Int_t evFirst,Int_t evLast) {
2207 //-----------------------------------------------------------------------------
2208 // This function: 1) merges the files from track comparison
2209 // (beware: better no more than 100 events per file)
2210 // 2) computes the average TPC efficiencies
2211 //-----------------------------------------------------------------------------
2213 const char *outName="TPCeff.root";
2215 // merge files with tracks
2216 cerr<<" ******** MERGING FILES **********\n\n";
2218 // create the chain for the tree of compared tracks
2219 TChain ch1("cmptrktree");
2220 TChain ch2("cmptrktree");
2221 TChain ch3("cmptrktree");
2223 for(Int_t j=evFirst; j<=evLast; j++) {
2224 cerr<<"Processing event "<<j<<endl;
2226 TString covName("CovMatrix.");
2228 covName.Append(".root");
2230 if(gSystem->AccessPathName(covName.Data(),kFileExists)) continue;
2233 if(j<=100) ch1.Add(covName.Data());
2234 if(j>100 && j<=200) ch2.Add(covName.Data());
2235 if(j>200) ch3.Add(covName.Data());
2239 // merge chain in one file
2241 covOut = new TFile("CovMatrix_AllEvts_1.root","recreate");
2242 ch1.Merge(covOut,1000000000);
2245 covOut = new TFile("CovMatrix_AllEvts_2.root","recreate");
2246 ch2.Merge(covOut,1000000000);
2249 covOut = new TFile("CovMatrix_AllEvts_3.root","recreate");
2250 ch3.Merge(covOut,1000000000);
2256 cerr<<" ***** EFFICIENCIES ******\n\n";
2258 ReadEffs("TPCeff.1.root");
2260 Int_t n = fEffPi.GetTotPoints();
2261 Double_t *avEffPi = new Double_t[n];
2262 Double_t *avEffKa = new Double_t[n];
2263 Double_t *avEffPr = new Double_t[n];
2264 Double_t *avEffEl = new Double_t[n];
2265 Double_t *avEffMu = new Double_t[n];
2266 Int_t *evtsPi = new Int_t[n];
2267 Int_t *evtsKa = new Int_t[n];
2268 Int_t *evtsPr = new Int_t[n];
2269 Int_t *evtsEl = new Int_t[n];
2270 Int_t *evtsMu = new Int_t[n];
2272 for(Int_t j=0; j<n; j++) {
2273 avEffPi[j]=avEffKa[j]=avEffPr[j]=avEffEl[j]=avEffMu[j]=0.;
2274 evtsPi[j]=evtsKa[j]=evtsPr[j]=evtsEl[j]=evtsMu[j]=0;
2277 for(Int_t j=evFirst; j<=evLast; j++) {
2278 cerr<<"Processing event "<<j<<endl;
2280 TString effName("TPCeff.");
2282 effName.Append(".root");
2284 if(gSystem->AccessPathName(effName.Data(),kFileExists)) continue;
2286 ReadEffs(effName.Data());
2288 for(Int_t k=0; k<n; k++) {
2289 if(fEffPi.GetParam(k)>=0.) {avEffPi[k]+=fEffPi.GetParam(k); evtsPi[k]++;}
2290 if(fEffKa.GetParam(k)>=0.) {avEffKa[k]+=fEffKa.GetParam(k); evtsKa[k]++;}
2291 if(fEffPr.GetParam(k)>=0.) {avEffPr[k]+=fEffPr.GetParam(k); evtsPr[k]++;}
2292 if(fEffEl.GetParam(k)>=0.) {avEffEl[k]+=fEffEl.GetParam(k); evtsEl[k]++;}
2293 if(fEffMu.GetParam(k)>=0.) {avEffMu[k]+=fEffMu.GetParam(k); evtsMu[k]++;}
2298 // compute average efficiencies
2299 for(Int_t j=0; j<n; j++) {
2300 if(evtsPi[j]==0) evtsPi[j]++;
2301 fEffPi.SetParam(j,(Double_t)avEffPi[j]/evtsPi[j]);
2302 if(evtsKa[j]==0) evtsKa[j]++;
2303 fEffKa.SetParam(j,(Double_t)avEffKa[j]/evtsKa[j]);
2304 if(evtsPr[j]==0) evtsPr[j]++;
2305 fEffPr.SetParam(j,(Double_t)avEffPr[j]/evtsPr[j]);
2306 if(evtsEl[j]==0) evtsEl[j]++;
2307 fEffEl.SetParam(j,(Double_t)avEffEl[j]/evtsEl[j]);
2308 if(evtsMu[j]==0) evtsMu[j]++;
2309 fEffMu.SetParam(j,(Double_t)avEffMu[j]/evtsMu[j]);
2312 // write efficiencies to a file
2328 //-----------------------------------------------------------------------------
2329 Int_t AliTPCtrackerParam::ReadAllData(const Char_t* inName) {
2330 //-----------------------------------------------------------------------------
2331 // This function reads all parameters from the DB
2332 //-----------------------------------------------------------------------------
2334 if(!ReadEffs(inName)) return 0;
2335 if(!ReadPulls(inName)) return 0;
2336 if(!ReadRegParams(inName,211)) return 0;
2337 if(!ReadRegParams(inName,321)) return 0;
2338 if(!ReadRegParams(inName,2212)) return 0;
2339 if(!ReadRegParams(inName,11)) return 0;
2340 if(!ReadRegParams(inName,13)) return 0;
2341 if(!ReaddEdx(inName,211)) return 0;
2342 if(!ReaddEdx(inName,321)) return 0;
2343 if(!ReaddEdx(inName,2212)) return 0;
2344 if(!ReaddEdx(inName,11)) return 0;
2345 if(!ReaddEdx(inName,13)) return 0;
2346 if(!ReadDBgrid(inName)) return 0;
2347 if(!ReadCovTrees(inName)) return 0;
2351 //-----------------------------------------------------------------------------
2352 Int_t AliTPCtrackerParam::ReadCovTrees(const Char_t* inName) {
2353 //-----------------------------------------------------------------------------
2354 // This function reads the covariance matrix trees from the DB
2355 //-----------------------------------------------------------------------------
2357 if(gSystem->AccessPathName(inName,kFileExists)) {
2358 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2363 TFile *inFile = TFile::Open(inName);
2366 Int_t nBinsPi = fDBgridPi.GetTotBins();
2367 for(Int_t l=0; l<nBinsPi; l++) {
2368 str = "/CovMatrices/Pions/CovTreePi_bin";
2370 fCovTreePi[l] = (TTree*)inFile->Get(str.Data());
2371 //fCovTree = (TTree*)inFile->Get(str.Data());
2372 //fCovTreePi[l] = new TTree(*fCovTree);
2374 Int_t nBinsKa = fDBgridKa.GetTotBins();
2375 for(Int_t l=0; l<nBinsKa; l++) {
2376 str = "/CovMatrices/Kaons/CovTreeKa_bin";
2378 fCovTreeKa[l] = (TTree*)inFile->Get(str.Data());
2379 //fCovTree = (TTree*)inFile->Get(str.Data());
2380 //fCovTreeKa[l] = new TTree(*fCovTree);
2382 Int_t nBinsPr = fDBgridPr.GetTotBins();
2383 for(Int_t l=0; l<nBinsPr; l++) {
2385 str = "/CovMatrices/Pions/CovTreePi_bin";
2387 str = "/CovMatrices/Protons/CovTreePr_bin";
2390 fCovTreePr[l] = (TTree*)inFile->Get(str.Data());
2391 //fCovTree = (TTree*)inFile->Get(str.Data());
2392 //fCovTreePr[l] = new TTree(*fCovTree);
2394 Int_t nBinsEl = fDBgridEl.GetTotBins();
2395 for(Int_t l=0; l<nBinsEl; l++) {
2396 str = "/CovMatrices/Electrons/CovTreeEl_bin";
2398 fCovTreeEl[l] = (TTree*)inFile->Get(str.Data());
2399 //fCovTree = (TTree*)inFile->Get(str.Data());
2400 //fCovTreeEl[l] = new TTree(*fCovTree);
2402 Int_t nBinsMu = fDBgridMu.GetTotBins();
2403 for(Int_t l=0; l<nBinsMu; l++) {
2405 str = "/CovMatrices/Pions/CovTreePi_bin";
2407 str = "/CovMatrices/Muons/CovTreeMu_bin";
2410 fCovTreeMu[l] = (TTree*)inFile->Get(str.Data());
2411 //fCovTree = (TTree*)inFile->Get(str.Data());
2412 //fCovTreeMu[l] = new TTree(*fCovTree);
2419 //-----------------------------------------------------------------------------
2420 Int_t AliTPCtrackerParam::ReaddEdx(const Char_t* inName,Int_t pdg) {
2421 //-----------------------------------------------------------------------------
2422 // This function reads the dEdx parameters from the DB
2423 //-----------------------------------------------------------------------------
2425 if(gSystem->AccessPathName(inName,kFileExists)) {
2426 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2429 TFile *inFile = TFile::Open(inName);
2432 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2433 fdEdxMeanPi.~AliTPCkineGrid();
2434 new(&fdEdxMeanPi) AliTPCkineGrid(*fdEdxMean);
2435 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2436 fdEdxRMSPi.~AliTPCkineGrid();
2437 new(&fdEdxRMSPi) AliTPCkineGrid(*fdEdxRMS);
2440 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxMeanKa");
2441 fdEdxMeanKa.~AliTPCkineGrid();
2442 new(&fdEdxMeanKa) AliTPCkineGrid(*fdEdxMean);
2443 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxRMSKa");
2444 fdEdxRMSKa.~AliTPCkineGrid();
2445 new(&fdEdxRMSKa) AliTPCkineGrid(*fdEdxRMS);
2448 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxMeanPr");
2449 fdEdxMeanPr.~AliTPCkineGrid();
2450 new(&fdEdxMeanPr) AliTPCkineGrid(*fdEdxMean);
2451 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxRMSPr");
2452 fdEdxRMSPr.~AliTPCkineGrid();
2453 new(&fdEdxRMSPr) AliTPCkineGrid(*fdEdxRMS);
2456 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxMeanEl");
2457 fdEdxMeanEl.~AliTPCkineGrid();
2458 new(&fdEdxMeanEl) AliTPCkineGrid(*fdEdxMean);
2459 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxRMSEl");
2460 fdEdxRMSEl.~AliTPCkineGrid();
2461 new(&fdEdxRMSEl) AliTPCkineGrid(*fdEdxRMS);
2465 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2466 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2468 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxMeanMu");
2469 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxRMSMu");
2471 fdEdxMeanMu.~AliTPCkineGrid();
2472 new(&fdEdxMeanMu) AliTPCkineGrid(*fdEdxMean);
2473 fdEdxRMSMu.~AliTPCkineGrid();
2474 new(&fdEdxRMSMu) AliTPCkineGrid(*fdEdxRMS);
2481 //-----------------------------------------------------------------------------
2482 Int_t AliTPCtrackerParam::ReadDBgrid(const Char_t* inName) {
2483 //-----------------------------------------------------------------------------
2484 // This function reads the kine grid from the DB
2485 //-----------------------------------------------------------------------------
2487 if(gSystem->AccessPathName(inName,kFileExists)) {
2488 cerr<<"AliTPCtrackerParam::ReadCovMatrices: "<<inName<<" not found\n";
2491 TFile *inFile = TFile::Open(inName);
2493 // first read the DB grid for the different particles
2494 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2495 fDBgridPi.~AliTPCkineGrid();
2496 new(&fDBgridPi) AliTPCkineGrid(*fDBgrid);
2497 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Kaons/DBgridKa");
2498 fDBgridKa.~AliTPCkineGrid();
2499 new(&fDBgridKa) AliTPCkineGrid(*fDBgrid);
2501 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2503 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Protons/DBgridPr");
2505 fDBgridPr.~AliTPCkineGrid();
2506 new(&fDBgridPr) AliTPCkineGrid(*fDBgrid);
2507 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Electrons/DBgridEl");
2508 fDBgridEl.~AliTPCkineGrid();
2509 new(&fDBgridEl) AliTPCkineGrid(*fDBgrid);
2511 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2513 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Muons/DBgridMu");
2515 fDBgridMu.~AliTPCkineGrid();
2516 new(&fDBgridMu) AliTPCkineGrid(*fDBgrid);
2522 //-----------------------------------------------------------------------------
2523 Int_t AliTPCtrackerParam::ReadEffs(const Char_t* inName) {
2524 //-----------------------------------------------------------------------------
2525 // This function reads the TPC efficiencies from the DB
2526 //-----------------------------------------------------------------------------
2528 if(gSystem->AccessPathName(inName,kFileExists)) {
2529 cerr<<"AliTPCtrackerParam::ReadEffs: "<<inName<<" not found\n";
2532 TFile *inFile = TFile::Open(inName);
2534 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Pions/EffPi");
2535 fEffPi.~AliTPCkineGrid();
2536 new(&fEffPi) AliTPCkineGrid(*fEff);
2537 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Kaons/EffKa");
2538 fEffKa.~AliTPCkineGrid();
2539 new(&fEffKa) AliTPCkineGrid(*fEff);
2540 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Protons/EffPr");
2541 fEffPr.~AliTPCkineGrid();
2542 new(&fEffPr) AliTPCkineGrid(*fEff);
2543 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Electrons/EffEl");
2544 fEffEl.~AliTPCkineGrid();
2545 new(&fEffEl) AliTPCkineGrid(*fEff);
2546 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Muons/EffMu");
2547 fEffMu.~AliTPCkineGrid();
2548 new(&fEffMu) AliTPCkineGrid(*fEff);
2554 //-----------------------------------------------------------------------------
2555 Int_t AliTPCtrackerParam::ReadPulls(const Char_t* inName) {
2556 //-----------------------------------------------------------------------------
2557 // This function reads the pulls from the DB
2558 //-----------------------------------------------------------------------------
2560 if(gSystem->AccessPathName(inName,kFileExists)) {
2561 cerr<<"AliTPCtrackerParam::ReadPulls: "<<inName<<" not found\n";
2564 TFile *inFile = TFile::Open(inName);
2566 for(Int_t i=0; i<5; i++) {
2567 TString pi("/Pulls/Pions/PullsPi_"); pi+=i;
2568 TString ka("/Pulls/Kaons/PullsKa_"); ka+=i;
2569 TString pr("/Pulls/Protons/PullsPr_"); pr+=i;
2570 TString el("/Pulls/Electrons/PullsEl_"); el+=i;
2571 TString mu("/Pulls/Muons/PullsMu_"); mu+=i;
2573 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2574 fPullsPi[i].~AliTPCkineGrid();
2575 new(&fPullsPi[i]) AliTPCkineGrid(*fPulls);
2577 fPulls = (AliTPCkineGrid*)inFile->Get(ka.Data());
2578 fPullsKa[i].~AliTPCkineGrid();
2579 new(&fPullsKa[i]) AliTPCkineGrid(*fPulls);
2582 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2584 fPulls = (AliTPCkineGrid*)inFile->Get(pr.Data());
2586 fPullsPr[i].~AliTPCkineGrid();
2587 new(&fPullsPr[i]) AliTPCkineGrid(*fPulls);
2589 fPulls = (AliTPCkineGrid*)inFile->Get(el.Data());
2590 fPullsEl[i].~AliTPCkineGrid();
2591 new(&fPullsEl[i]) AliTPCkineGrid(*fPulls);
2594 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2596 fPulls = (AliTPCkineGrid*)inFile->Get(mu.Data());
2598 fPullsMu[i].~AliTPCkineGrid();
2599 new(&fPullsMu[i]) AliTPCkineGrid(*fPulls);
2606 //-----------------------------------------------------------------------------
2607 Int_t AliTPCtrackerParam::ReadRegParams(const Char_t* inName,Int_t pdg) {
2608 //-----------------------------------------------------------------------------
2609 // This function reads the regularization parameters from the DB
2610 //-----------------------------------------------------------------------------
2612 if(gSystem->AccessPathName(inName,kFileExists)) {
2613 cerr<<"AliTPCtrackerParam::ReadRegParams: "<<inName<<" not found\n";
2615 // Introduced change to "reverse" the TMatrixD read from file.
2616 // Needed because storage mode of TMatrixD changed from column-wise
2617 // to rwo-wise in ROOT.
2619 // A.Dainese 03/06/05
2621 TMatrixD dummyMatrix(9,3);
2623 TFile *inFile = TFile::Open(inName);
2626 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2627 new(&fRegParPi) TMatrixD(*fRegPar);
2628 //printf("before\n");
2629 //for(Int_t jj=0;jj<9;jj++) printf("%13.10f %13.10f %13.10f\n",fRegParPi(jj,0),fRegParPi(jj,1),fRegParPi(jj,2));
2630 dummyMatrix = fRegParPi;
2631 fRegParPi(0,0) = dummyMatrix(0,0);
2632 fRegParPi(0,1) = dummyMatrix(0,1);
2633 fRegParPi(0,2) = dummyMatrix(0,2);
2634 fRegParPi(1,0) = dummyMatrix(3,0);
2635 fRegParPi(1,1) = dummyMatrix(1,1);
2636 fRegParPi(1,2) = dummyMatrix(1,2);
2637 fRegParPi(2,0) = dummyMatrix(6,0);
2638 fRegParPi(2,1) = dummyMatrix(3,2);
2639 fRegParPi(2,2) = dummyMatrix(2,2);
2640 fRegParPi(3,0) = dummyMatrix(1,0);
2641 fRegParPi(3,1) = dummyMatrix(4,0);
2642 fRegParPi(3,2) = dummyMatrix(7,0);
2643 fRegParPi(4,0) = dummyMatrix(3,1);
2644 fRegParPi(4,1) = dummyMatrix(4,1);
2645 fRegParPi(4,2) = dummyMatrix(7,1);
2646 fRegParPi(5,0) = dummyMatrix(6,1);
2647 fRegParPi(5,1) = dummyMatrix(4,2);
2648 fRegParPi(5,2) = dummyMatrix(7,2);
2649 fRegParPi(6,0) = dummyMatrix(2,0);
2650 fRegParPi(6,1) = dummyMatrix(5,0);
2651 fRegParPi(6,2) = dummyMatrix(8,0);
2652 fRegParPi(7,0) = dummyMatrix(2,1);
2653 fRegParPi(7,1) = dummyMatrix(5,1);
2654 fRegParPi(7,2) = dummyMatrix(8,1);
2655 fRegParPi(8,0) = dummyMatrix(6,2);
2656 fRegParPi(8,1) = dummyMatrix(5,2);
2657 fRegParPi(8,2) = dummyMatrix(8,2);
2658 //printf("after\n");
2659 //for(Int_t jj=0;jj<9;jj++) printf("%13.10f %13.10f %13.10f\n",fRegParPi(jj,0),fRegParPi(jj,1),fRegParPi(jj,2));
2662 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Kaons/RegKaons");
2663 new(&fRegParKa) TMatrixD(*fRegPar);
2664 dummyMatrix = fRegParKa;
2665 fRegParKa(0,0) = dummyMatrix(0,0);
2666 fRegParKa(0,1) = dummyMatrix(0,1);
2667 fRegParKa(0,2) = dummyMatrix(0,2);
2668 fRegParKa(1,0) = dummyMatrix(3,0);
2669 fRegParKa(1,1) = dummyMatrix(1,1);
2670 fRegParKa(1,2) = dummyMatrix(1,2);
2671 fRegParKa(2,0) = dummyMatrix(6,0);
2672 fRegParKa(2,1) = dummyMatrix(3,2);
2673 fRegParKa(2,2) = dummyMatrix(2,2);
2674 fRegParKa(3,0) = dummyMatrix(1,0);
2675 fRegParKa(3,1) = dummyMatrix(4,0);
2676 fRegParKa(3,2) = dummyMatrix(7,0);
2677 fRegParKa(4,0) = dummyMatrix(3,1);
2678 fRegParKa(4,1) = dummyMatrix(4,1);
2679 fRegParKa(4,2) = dummyMatrix(7,1);
2680 fRegParKa(5,0) = dummyMatrix(6,1);
2681 fRegParKa(5,1) = dummyMatrix(4,2);
2682 fRegParKa(5,2) = dummyMatrix(7,2);
2683 fRegParKa(6,0) = dummyMatrix(2,0);
2684 fRegParKa(6,1) = dummyMatrix(5,0);
2685 fRegParKa(6,2) = dummyMatrix(8,0);
2686 fRegParKa(7,0) = dummyMatrix(2,1);
2687 fRegParKa(7,1) = dummyMatrix(5,1);
2688 fRegParKa(7,2) = dummyMatrix(8,1);
2689 fRegParKa(8,0) = dummyMatrix(6,2);
2690 fRegParKa(8,1) = dummyMatrix(5,2);
2691 fRegParKa(8,2) = dummyMatrix(8,2);
2695 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2697 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Protons/RegProtons");
2699 new(&fRegParPr) TMatrixD(*fRegPar);
2700 dummyMatrix = fRegParPr;
2701 fRegParPr(0,0) = dummyMatrix(0,0);
2702 fRegParPr(0,1) = dummyMatrix(0,1);
2703 fRegParPr(0,2) = dummyMatrix(0,2);
2704 fRegParPr(1,0) = dummyMatrix(3,0);
2705 fRegParPr(1,1) = dummyMatrix(1,1);
2706 fRegParPr(1,2) = dummyMatrix(1,2);
2707 fRegParPr(2,0) = dummyMatrix(6,0);
2708 fRegParPr(2,1) = dummyMatrix(3,2);
2709 fRegParPr(2,2) = dummyMatrix(2,2);
2710 fRegParPr(3,0) = dummyMatrix(1,0);
2711 fRegParPr(3,1) = dummyMatrix(4,0);
2712 fRegParPr(3,2) = dummyMatrix(7,0);
2713 fRegParPr(4,0) = dummyMatrix(3,1);
2714 fRegParPr(4,1) = dummyMatrix(4,1);
2715 fRegParPr(4,2) = dummyMatrix(7,1);
2716 fRegParPr(5,0) = dummyMatrix(6,1);
2717 fRegParPr(5,1) = dummyMatrix(4,2);
2718 fRegParPr(5,2) = dummyMatrix(7,2);
2719 fRegParPr(6,0) = dummyMatrix(2,0);
2720 fRegParPr(6,1) = dummyMatrix(5,0);
2721 fRegParPr(6,2) = dummyMatrix(8,0);
2722 fRegParPr(7,0) = dummyMatrix(2,1);
2723 fRegParPr(7,1) = dummyMatrix(5,1);
2724 fRegParPr(7,2) = dummyMatrix(8,1);
2725 fRegParPr(8,0) = dummyMatrix(6,2);
2726 fRegParPr(8,1) = dummyMatrix(5,2);
2727 fRegParPr(8,2) = dummyMatrix(8,2);
2730 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Electrons/RegElectrons");
2731 new(&fRegParEl) TMatrixD(*fRegPar);
2732 dummyMatrix = fRegParEl;
2733 fRegParEl(0,0) = dummyMatrix(0,0);
2734 fRegParEl(0,1) = dummyMatrix(0,1);
2735 fRegParEl(0,2) = dummyMatrix(0,2);
2736 fRegParEl(1,0) = dummyMatrix(3,0);
2737 fRegParEl(1,1) = dummyMatrix(1,1);
2738 fRegParEl(1,2) = dummyMatrix(1,2);
2739 fRegParEl(2,0) = dummyMatrix(6,0);
2740 fRegParEl(2,1) = dummyMatrix(3,2);
2741 fRegParEl(2,2) = dummyMatrix(2,2);
2742 fRegParEl(3,0) = dummyMatrix(1,0);
2743 fRegParEl(3,1) = dummyMatrix(4,0);
2744 fRegParEl(3,2) = dummyMatrix(7,0);
2745 fRegParEl(4,0) = dummyMatrix(3,1);
2746 fRegParEl(4,1) = dummyMatrix(4,1);
2747 fRegParEl(4,2) = dummyMatrix(7,1);
2748 fRegParEl(5,0) = dummyMatrix(6,1);
2749 fRegParEl(5,1) = dummyMatrix(4,2);
2750 fRegParEl(5,2) = dummyMatrix(7,2);
2751 fRegParEl(6,0) = dummyMatrix(2,0);
2752 fRegParEl(6,1) = dummyMatrix(5,0);
2753 fRegParEl(6,2) = dummyMatrix(8,0);
2754 fRegParEl(7,0) = dummyMatrix(2,1);
2755 fRegParEl(7,1) = dummyMatrix(5,1);
2756 fRegParEl(7,2) = dummyMatrix(8,1);
2757 fRegParEl(8,0) = dummyMatrix(6,2);
2758 fRegParEl(8,1) = dummyMatrix(5,2);
2759 fRegParEl(8,2) = dummyMatrix(8,2);
2763 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2765 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Muons/RegMuons");
2767 new(&fRegParMu) TMatrixD(*fRegPar);
2768 dummyMatrix = fRegParMu;
2769 fRegParMu(0,0) = dummyMatrix(0,0);
2770 fRegParMu(0,1) = dummyMatrix(0,1);
2771 fRegParMu(0,2) = dummyMatrix(0,2);
2772 fRegParMu(1,0) = dummyMatrix(3,0);
2773 fRegParMu(1,1) = dummyMatrix(1,1);
2774 fRegParMu(1,2) = dummyMatrix(1,2);
2775 fRegParMu(2,0) = dummyMatrix(6,0);
2776 fRegParMu(2,1) = dummyMatrix(3,2);
2777 fRegParMu(2,2) = dummyMatrix(2,2);
2778 fRegParMu(3,0) = dummyMatrix(1,0);
2779 fRegParMu(3,1) = dummyMatrix(4,0);
2780 fRegParMu(3,2) = dummyMatrix(7,0);
2781 fRegParMu(4,0) = dummyMatrix(3,1);
2782 fRegParMu(4,1) = dummyMatrix(4,1);
2783 fRegParMu(4,2) = dummyMatrix(7,1);
2784 fRegParMu(5,0) = dummyMatrix(6,1);
2785 fRegParMu(5,1) = dummyMatrix(4,2);
2786 fRegParMu(5,2) = dummyMatrix(7,2);
2787 fRegParMu(6,0) = dummyMatrix(2,0);
2788 fRegParMu(6,1) = dummyMatrix(5,0);
2789 fRegParMu(6,2) = dummyMatrix(8,0);
2790 fRegParMu(7,0) = dummyMatrix(2,1);
2791 fRegParMu(7,1) = dummyMatrix(5,1);
2792 fRegParMu(7,2) = dummyMatrix(8,1);
2793 fRegParMu(8,0) = dummyMatrix(6,2);
2794 fRegParMu(8,1) = dummyMatrix(5,2);
2795 fRegParMu(8,2) = dummyMatrix(8,2);
2802 //-----------------------------------------------------------------------------
2803 void AliTPCtrackerParam::RegularizeCovMatrix(const Char_t *outName,Int_t pdg) {
2804 //-----------------------------------------------------------------------------
2805 // This function regularizes the elements of the covariance matrix
2806 // that show a momentum depence:
2807 // c00, c11, c22, c33, c44, c20, c24, c40, c31
2808 // The regularization is done separately for pions, kaons, electrons:
2809 // give "Pion","Kaon" or "Electron" as first argument.
2810 //-----------------------------------------------------------------------------
2812 gStyle->SetOptStat(0);
2813 gStyle->SetOptFit(10001);
2816 const char *part="Pions - ";
2818 InitializeKineGrid("DB");
2820 const Int_t kfitbins = fDBgrid->GetBinsPt();
2821 cerr<<" Fit bins: "<<kfitbins<<endl;
2827 cerr<<" Processing pions ...\n";
2832 cerr<<" Processing kaons ...\n";
2834 case 2212: //protons
2837 cerr<<" Processing protons ...\n";
2839 case 11: // electrons
2841 part="Electrons - ";
2842 cerr<<" Processing electrons ...\n";
2847 cerr<<" Processing muons ...\n";
2853 // create a chain with compared tracks
2854 TChain *cmptrkchain = new ("cmptrktree");
2855 cmptrkchain.Add("CovMatrix_AllEvts.root");
2856 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
2857 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
2858 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
2862 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
2863 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
2866 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
2867 Int_t entries = (Int_t)cmptrktree->GetEntries();
2871 Int_t *n = new Int_t[kfitbins];
2872 Int_t *n00 = new Int_t[kfitbins];
2873 Int_t *n11 = new Int_t[kfitbins];
2874 Int_t *n20 = new Int_t[kfitbins];
2875 Int_t *n22 = new Int_t[kfitbins];
2876 Int_t *n31 = new Int_t[kfitbins];
2877 Int_t *n33 = new Int_t[kfitbins];
2878 Int_t *n40 = new Int_t[kfitbins];
2879 Int_t *n42 = new Int_t[kfitbins];
2880 Int_t *n44 = new Int_t[kfitbins];
2881 Double_t *p = new Double_t[kfitbins];
2882 Double_t *ep = new Double_t[kfitbins];
2883 Double_t *mean00 = new Double_t[kfitbins];
2884 Double_t *mean11 = new Double_t[kfitbins];
2885 Double_t *mean20 = new Double_t[kfitbins];
2886 Double_t *mean22 = new Double_t[kfitbins];
2887 Double_t *mean31 = new Double_t[kfitbins];
2888 Double_t *mean33 = new Double_t[kfitbins];
2889 Double_t *mean40 = new Double_t[kfitbins];
2890 Double_t *mean42 = new Double_t[kfitbins];
2891 Double_t *mean44 = new Double_t[kfitbins];
2892 Double_t *sigma00 = new Double_t[kfitbins];
2893 Double_t *sigma11 = new Double_t[kfitbins];
2894 Double_t *sigma20 = new Double_t[kfitbins];
2895 Double_t *sigma22 = new Double_t[kfitbins];
2896 Double_t *sigma31 = new Double_t[kfitbins];
2897 Double_t *sigma33 = new Double_t[kfitbins];
2898 Double_t *sigma40 = new Double_t[kfitbins];
2899 Double_t *sigma42 = new Double_t[kfitbins];
2900 Double_t *sigma44 = new Double_t[kfitbins];
2901 Double_t *rmean = new Double_t[kfitbins];
2902 Double_t *rsigma = new Double_t[kfitbins];
2905 for(Int_t l=0; l<kfitbins; l++) {
2907 n00[l]=n11[l]=n20[l]=n22[l]=n31[l]=n33[l]=n40[l]=n42[l]=n44[l]=1;
2909 mean00[l]=mean11[l]=mean20[l]=mean22[l]=mean31[l]=mean33[l]=mean40[l]=mean42[l]=mean44[l]=0.;
2910 sigma00[l]=sigma11[l]=sigma20[l]=sigma22[l]=sigma31[l]=sigma33[l]=sigma40[l]=sigma42[l]=sigma44[l]=0.;
2913 // loop on chain entries for mean
2914 for(Int_t l=0; l<entries; l++) {
2915 cmptrktree->GetEvent(l);
2916 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2917 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2920 mean00[pbin]+=cmptrk.c00;
2921 mean11[pbin]+=cmptrk.c11;
2922 mean20[pbin]+=cmptrk.c20;
2923 mean22[pbin]+=cmptrk.c22;
2924 mean31[pbin]+=cmptrk.c31;
2925 mean33[pbin]+=cmptrk.c33;
2926 mean40[pbin]+=cmptrk.c40;
2927 mean42[pbin]+=cmptrk.c42;
2928 mean44[pbin]+=cmptrk.c44;
2929 } // loop on chain entries
2931 for(Int_t l=0; l<kfitbins; l++) {
2944 // loop on chain entries for sigma
2945 for(Int_t l=0; l<entries; l++) {
2946 cmptrktree->GetEvent(l);
2947 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2948 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2949 if(TMath::Abs(cmptrk.c00-mean00[pbin])<0.4*mean00[pbin]) { n00[pbin]++;
2950 sigma00[pbin]+=(cmptrk.c00-mean00[pbin])*(cmptrk.c00-mean00[pbin]); }
2951 if(TMath::Abs(cmptrk.c11-mean11[pbin])<0.4*mean11[pbin]) { n11[pbin]++;
2952 sigma11[pbin]+=(cmptrk.c11-mean11[pbin])*(cmptrk.c11-mean11[pbin]); }
2953 if(TMath::Abs(cmptrk.c20-mean20[pbin])<0.4*mean20[pbin]) { n20[pbin]++;
2954 sigma20[pbin]+=(cmptrk.c20-mean20[pbin])*(cmptrk.c20-mean20[pbin]); }
2955 if(TMath::Abs(cmptrk.c22-mean22[pbin])<0.4*mean22[pbin]) { n22[pbin]++;
2956 sigma22[pbin]+=(cmptrk.c22-mean22[pbin])*(cmptrk.c22-mean22[pbin]); }
2957 if(TMath::Abs(cmptrk.c31-mean31[pbin])<-0.4*mean31[pbin]) { n31[pbin]++;
2958 sigma31[pbin]+=(cmptrk.c31-mean31[pbin])*(cmptrk.c31-mean31[pbin]); }
2959 if(TMath::Abs(cmptrk.c33-mean33[pbin])<0.4*mean33[pbin]) { n33[pbin]++;
2960 sigma33[pbin]+=(cmptrk.c33-mean33[pbin])*(cmptrk.c33-mean33[pbin]); }
2961 if(TMath::Abs(cmptrk.c40-mean40[pbin])<0.4*mean40[pbin]) { n40[pbin]++;
2962 sigma40[pbin]+=(cmptrk.c40-mean40[pbin])*(cmptrk.c40-mean40[pbin]); }
2963 if(TMath::Abs(cmptrk.c42-mean42[pbin])<0.4*mean42[pbin]) { n42[pbin]++;
2964 sigma42[pbin]+=(cmptrk.c42-mean42[pbin])*(cmptrk.c42-mean42[pbin]); }
2965 if(TMath::Abs(cmptrk.c44-mean44[pbin])<0.4*mean44[pbin]) { n44[pbin]++;
2966 sigma44[pbin]+=(cmptrk.c44-mean44[pbin])*(cmptrk.c44-mean44[pbin]); }
2967 } // loop on chain entries
2969 for(Int_t l=0; l<kfitbins; l++) {
2970 sigma00[l] = TMath::Sqrt(sigma00[l]/n00[l]);
2971 sigma11[l] = TMath::Sqrt(sigma11[l]/n11[l]);
2972 sigma20[l] = TMath::Sqrt(sigma20[l]/n20[l]);
2973 sigma22[l] = TMath::Sqrt(sigma22[l]/n22[l]);
2974 sigma31[l] = TMath::Sqrt(sigma31[l]/n31[l]);
2975 sigma33[l] = TMath::Sqrt(sigma33[l]/n33[l]);
2976 sigma40[l] = TMath::Sqrt(sigma40[l]/n40[l]);
2977 sigma42[l] = TMath::Sqrt(sigma42[l]/n42[l]);
2978 sigma44[l] = TMath::Sqrt(sigma44[l]/n44[l]);
2983 TF1 *func = new TF1("RegFunc",RegFunc,0.23,50.,3);
2984 func->SetParNames("A_meas","A_scatt","B");
2986 // line to draw on the plots
2987 TLine *lin = new TLine(-1,1,1.69,1);
2988 lin->SetLineStyle(2);
2989 lin->SetLineWidth(2);
2991 // matrix used to store fit results
2992 TMatrixD fitRes(9,3);
2996 // create the canvas
2997 TCanvas *canv00 = new TCanvas("canv00","c00",0,0,700,900);
2998 canv00->Divide(1,2);
2999 // create the graph for cov matrix
3000 TGraphErrors *gr00 = new TGraphErrors(kfitbins,p,mean00,ep,sigma00);
3001 TString title00("C(y,y)"); title00.Prepend(part);
3002 TH2F *frame00 = new TH2F("frame00",title00.Data(),2,0.1,50,2,0,5e-3);
3003 frame00->SetXTitle("p [GeV/c]");
3004 canv00->cd(1); gPad->SetLogx();
3007 // Sets initial values for parameters
3008 func->SetParameters(1.6e-3,1.9e-4,1.5);
3009 // Fit points in range defined by function
3010 gr00->Fit("RegFunc","R,Q");
3011 func->GetParameters(fitpar);
3012 for(Int_t i=0; i<3; i++) fitRes(0,i)=fitpar[i];
3013 for(Int_t l=0; l<kfitbins; l++) {
3014 rmean[l] = mean00[l]/RegFunc(&p[l],fitpar);
3015 rsigma[l] = sigma00[l]/RegFunc(&p[l],fitpar);
3017 // create the graph the regularized cov. matrix
3018 TGraphErrors *gr00reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3019 TString regtitle00("C(y,y)/(A_meas+A_scatt/p^{B})");
3020 regtitle00.Prepend(part);
3021 TH2F *frame00reg = new TH2F("frame00reg",regtitle00.Data(),2,0.1,50,2,0,2);
3022 frame00reg->SetXTitle("p [GeV/c]");
3023 canv00->cd(2); gPad->SetLogx();
3031 // create the canvas
3032 TCanvas *canv11 = new TCanvas("canv11","c11",0,0,700,900);
3033 canv11->Divide(1,2);
3034 // create the graph for cov matrix
3035 TGraphErrors *gr11 = new TGraphErrors(kfitbins,p,mean11,ep,sigma11);
3036 TString title11("C(z,z)"); title11.Prepend(part);
3037 TH2F *frame11 = new TH2F("frame11",title11.Data(),2,0.1,50,2,0,6e-3);
3038 frame11->SetXTitle("p [GeV/c]");
3039 canv11->cd(1); gPad->SetLogx();
3042 // Sets initial values for parameters
3043 func->SetParameters(1.2e-3,8.1e-4,1.);
3044 // Fit points in range defined by function
3045 gr11->Fit("RegFunc","R,Q");
3046 func->GetParameters(fitpar);
3047 for(Int_t i=0; i<3; i++) fitRes(1,i)=fitpar[i];
3048 for(Int_t l=0; l<kfitbins; l++) {
3049 rmean[l] = mean11[l]/RegFunc(&p[l],fitpar);
3050 rsigma[l] = sigma11[l]/RegFunc(&p[l],fitpar);
3052 // create the graph the regularized cov. matrix
3053 TGraphErrors *gr11reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3054 TString regtitle11("C(z,z)/(A_meas+A_scatt/p^{B})");
3055 regtitle11.Prepend(part);
3056 TH2F *frame11reg = new TH2F("frame11reg",regtitle11.Data(),2,0.1,50,2,0,2);
3057 frame11reg->SetXTitle("p [GeV/c]");
3058 canv11->cd(2); gPad->SetLogx();
3066 // create the canvas
3067 TCanvas *canv20 = new TCanvas("canv20","c20",0,0,700,900);
3068 canv20->Divide(1,2);
3069 // create the graph for cov matrix
3070 TGraphErrors *gr20 = new TGraphErrors(kfitbins,p,mean20,ep,sigma20);
3071 TString title20("C(#eta, y)"); title20.Prepend(part);
3072 TH2F *frame20 = new TH2F("frame20",title20.Data(),2,0.1,50,2,0,2.5e-4);
3073 frame20->SetXTitle("p [GeV/c]");
3074 canv20->cd(1); gPad->SetLogx();
3077 // Sets initial values for parameters
3078 func->SetParameters(7.3e-5,1.2e-5,1.5);
3079 // Fit points in range defined by function
3080 gr20->Fit("RegFunc","R,Q");
3081 func->GetParameters(fitpar);
3082 for(Int_t i=0; i<3; i++) fitRes(2,i)=fitpar[i];
3083 for(Int_t l=0; l<kfitbins; l++) {
3084 rmean[l] = mean20[l]/RegFunc(&p[l],fitpar);
3085 rsigma[l] = sigma20[l]/RegFunc(&p[l],fitpar);
3087 // create the graph the regularized cov. matrix
3088 TGraphErrors *gr20reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3089 TString regtitle20("C(#eta, y)/(A_meas+A_scatt/p^{B})");
3090 regtitle20.Prepend(part);
3091 TH2F *frame20reg = new TH2F("frame20reg",regtitle20.Data(),2,0.1,50,2,0,2);
3092 frame20reg->SetXTitle("p [GeV/c]");
3093 canv20->cd(2); gPad->SetLogx();
3101 // create the canvas
3102 TCanvas *canv22 = new TCanvas("canv22","c22",0,0,700,900);
3103 canv22->Divide(1,2);
3104 // create the graph for cov matrix
3105 TGraphErrors *gr22 = new TGraphErrors(kfitbins,p,mean22,ep,sigma22);
3106 TString title22("C(#eta, #eta)"); title22.Prepend(part);
3107 TH2F *frame22 = new TH2F("frame22",title22.Data(),2,0.1,50,2,0,3e-5);
3108 frame22->SetXTitle("p [GeV/c]");
3109 canv22->cd(1); gPad->SetLogx();
3112 // Sets initial values for parameters
3113 func->SetParameters(5.2e-6,1.1e-6,2.);
3114 // Fit points in range defined by function
3115 gr22->Fit("RegFunc","R,Q");
3116 func->GetParameters(fitpar);
3117 for(Int_t i=0; i<3; i++) fitRes(3,i)=fitpar[i];
3118 for(Int_t l=0; l<kfitbins; l++) {
3119 rmean[l] = mean22[l]/RegFunc(&p[l],fitpar);
3120 rsigma[l] = sigma22[l]/RegFunc(&p[l],fitpar);
3122 // create the graph the regularized cov. matrix
3123 TGraphErrors *gr22reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3124 TString regtitle22("C(#eta, #eta)/(A_meas+A_scatt/p^{B})");
3125 regtitle22.Prepend(part);
3126 TH2F *frame22reg = new TH2F("frame22reg",regtitle22.Data(),2,0.1,50,2,0,2);
3127 frame22reg->SetXTitle("p [GeV/c]");
3128 canv22->cd(2); gPad->SetLogx();
3136 // create the canvas
3137 TCanvas *canv31 = new TCanvas("canv31","c31",0,0,700,900);
3138 canv31->Divide(1,2);
3139 // create the graph for cov matrix
3140 TGraphErrors *gr31 = new TGraphErrors(kfitbins,p,mean31,ep,sigma31);
3141 TString title31("C(tg #lambda,z)"); title31.Prepend(part);
3142 TH2F *frame31 = new TH2F("frame31",title31.Data(),2,0.1,50,2,-2e-4,0);
3143 frame31->SetXTitle("p [GeV/c]");
3144 canv31->cd(1); gPad->SetLogx();
3147 // Sets initial values for parameters
3148 func->SetParameters(-1.2e-5,-1.2e-5,1.5);
3149 // Fit points in range defined by function
3150 gr31->Fit("RegFunc","R,Q");
3151 func->GetParameters(fitpar);
3152 for(Int_t i=0; i<3; i++) fitRes(4,i)=fitpar[i];
3153 for(Int_t l=0; l<kfitbins; l++) {
3154 rmean[l] = mean31[l]/RegFunc(&p[l],fitpar);
3155 rsigma[l] = -sigma31[l]/RegFunc(&p[l],fitpar);
3157 // create the graph the regularized cov. matrix
3158 TGraphErrors *gr31reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3159 TString regtitle31("C(tg #lambda,z)/(A_meas+A_scatt/p^{B})");
3160 regtitle31.Prepend(part);
3161 TH2F *frame31reg = new TH2F("frame31reg",regtitle31.Data(),2,0.1,50,2,0,2);
3162 frame31reg->SetXTitle("p [GeV/c]");
3163 canv31->cd(2); gPad->SetLogx();
3171 // create the canvas
3172 TCanvas *canv33 = new TCanvas("canv33","c33",0,0,700,900);
3173 canv33->Divide(1,2);
3174 // create the graph for cov matrix
3175 TGraphErrors *gr33 = new TGraphErrors(kfitbins,p,mean33,ep,sigma33);
3176 TString title33("C(tg #lambda,tg #lambda)"); title33.Prepend(part);
3177 TH2F *frame33 = new TH2F("frame33",title33.Data(),2,0.1,50,2,0,1e-5);
3178 frame33->SetXTitle("p [GeV/c]");
3179 canv33->cd(1); gPad->SetLogx();
3182 // Sets initial values for parameters
3183 func->SetParameters(1.3e-7,4.6e-7,1.7);
3184 // Fit points in range defined by function
3185 gr33->Fit("RegFunc","R,Q");
3186 func->GetParameters(fitpar);
3187 for(Int_t i=0; i<3; i++) fitRes(5,i)=fitpar[i];
3188 for(Int_t l=0; l<kfitbins; l++) {
3189 rmean[l] = mean33[l]/RegFunc(&p[l],fitpar);
3190 rsigma[l] = sigma33[l]/RegFunc(&p[l],fitpar);
3192 // create the graph the regularized cov. matrix
3193 TGraphErrors *gr33reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3194 TString regtitle33("C(tg #lambda,tg #lambda)/(A_meas+A_scatt/p^{B})");
3195 regtitle33.Prepend(part);
3196 TH2F *frame33reg = new TH2F("frame33reg",regtitle33.Data(),2,0.1,50,2,0,2);
3197 frame33reg->SetXTitle("p [GeV/c]");
3198 canv33->cd(2); gPad->SetLogx();
3206 // create the canvas
3207 TCanvas *canv40 = new TCanvas("canv40","c40",0,0,700,900);
3208 canv40->Divide(1,2);
3209 // create the graph for cov matrix
3210 TGraphErrors *gr40 = new TGraphErrors(kfitbins,p,mean40,ep,sigma40);
3211 TString title40("C(C,y)"); title40.Prepend(part);
3212 TH2F *frame40 = new TH2F("frame40",title40.Data(),2,0.1,50,2,0,1e-6);
3213 frame40->SetXTitle("p [GeV/c]");
3214 canv40->cd(1); gPad->SetLogx();
3217 // Sets initial values for parameters
3218 func->SetParameters(4.e-7,4.4e-8,1.5);
3219 // Fit points in range defined by function
3220 gr40->Fit("RegFunc","R,Q");
3221 func->GetParameters(fitpar);
3222 for(Int_t i=0; i<3; i++) fitRes(6,i)=fitpar[i];
3223 for(Int_t l=0; l<kfitbins; l++) {
3224 rmean[l] = mean40[l]/RegFunc(&p[l],fitpar);
3225 rsigma[l] = sigma40[l]/RegFunc(&p[l],fitpar);
3227 // create the graph the regularized cov. matrix
3228 TGraphErrors *gr40reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3229 TString regtitle40("C(C,y)/(A_meas+A_scatt/p^{B})");
3230 regtitle40.Prepend(part);
3231 TH2F *frame40reg = new TH2F("frame40reg",regtitle40.Data(),2,0.1,50,2,0,2);
3232 frame40reg->SetXTitle("p [GeV/c]");
3233 canv40->cd(2); gPad->SetLogx();
3241 // create the canvas
3242 TCanvas *canv42 = new TCanvas("canv42","c42",0,0,700,900);
3243 canv42->Divide(1,2);
3244 // create the graph for cov matrix
3245 TGraphErrors *gr42 = new TGraphErrors(kfitbins,p,mean42,ep,sigma42);
3246 TString title42("C(C, #eta)"); title42.Prepend(part);
3247 TH2F *frame42 = new TH2F("frame42",title42.Data(),2,0.1,50,2,0,2.2e-7);
3248 frame42->SetXTitle("p [GeV/c]");
3249 canv42->cd(1); gPad->SetLogx();
3252 // Sets initial values for parameters
3253 func->SetParameters(3.e-8,8.2e-9,2.);
3254 // Fit points in range defined by function
3255 gr42->Fit("RegFunc","R,Q");
3256 func->GetParameters(fitpar);
3257 for(Int_t i=0; i<3; i++) fitRes(7,i)=fitpar[i];
3258 for(Int_t l=0; l<kfitbins; l++) {
3259 rmean[l] = mean42[l]/RegFunc(&p[l],fitpar);
3260 rsigma[l] = sigma42[l]/RegFunc(&p[l],fitpar);
3262 // create the graph the regularized cov. matrix
3263 TGraphErrors *gr42reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3264 TString regtitle42("C(C, #eta)/(A_meas+A_scatt/p^{B})");
3265 regtitle42.Prepend(part);
3266 TH2F *frame42reg = new TH2F("frame42reg",regtitle42.Data(),2,0.1,50,2,0,2);
3267 frame42reg->SetXTitle("p [GeV/c]");
3268 canv42->cd(2); gPad->SetLogx();
3276 // create the canvas
3277 TCanvas *canv44 = new TCanvas("canv44","c44",0,0,700,900);
3278 canv44->Divide(1,2);
3279 // create the graph for cov matrix
3280 TGraphErrors *gr44 = new TGraphErrors(kfitbins,p,mean44,ep,sigma44);
3281 TString title44("C(C,C)"); title44.Prepend(part);
3282 TH2F *frame44 = new TH2F("frame44",title44.Data(),2,0.1,50,2,0,2e-9);
3283 frame44->SetXTitle("p [GeV/c]");
3284 canv44->cd(1); gPad->SetLogx();
3287 // Sets initial values for parameters
3288 func->SetParameters(1.8e-10,5.8e-11,2.);
3289 // Fit points in range defined by function
3290 gr44->Fit("RegFunc","R,Q");
3291 func->GetParameters(fitpar);
3292 for(Int_t i=0; i<3; i++) fitRes(8,i)=fitpar[i];
3293 for(Int_t l=0; l<kfitbins; l++) {
3294 rmean[l] = mean44[l]/RegFunc(&p[l],fitpar);
3295 rsigma[l] = sigma44[l]/RegFunc(&p[l],fitpar);
3297 // create the graph the regularized cov. matrix
3298 TGraphErrors *gr44reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3299 TString regtitle44("C(C,C)/(A_meas+A_scatt/p^{B})");
3300 regtitle44.Prepend(part);
3301 TH2F *frame44reg = new TH2F("frame44reg",regtitle44.Data(),2,0.1,50,2,0,2);
3302 frame44reg->SetXTitle("p [GeV/c]");
3303 canv44->cd(2); gPad->SetLogx();
3313 new(&fRegParPi) TMatrixD(fitRes);
3316 new(&fRegParKa) TMatrixD(fitRes);
3319 new(&fRegParPr) TMatrixD(fitRes);
3322 new(&fRegParEl) TMatrixD(fitRes);
3325 new(&fRegParMu) TMatrixD(fitRes);
3329 // write fit parameters to file
3330 WriteRegParams(outName,pdg);
3367 //-----------------------------------------------------------------------------
3368 Bool_t AliTPCtrackerParam::SelectedTrack(Double_t pt,Double_t eta) const {
3369 //-----------------------------------------------------------------------------
3370 // This function makes a selection according to TPC tracking efficiency
3371 //-----------------------------------------------------------------------------
3375 eff = fEff->GetValueAt(pt,eta);
3377 if(gRandom->Rndm() < eff) return kTRUE;
3381 //-----------------------------------------------------------------------------
3382 void AliTPCtrackerParam::SetParticle(Int_t pdg) {
3383 //-----------------------------------------------------------------------------
3384 // This function set efficiencies, pulls, etc... for the particle
3385 // specie of the current particle
3386 //-----------------------------------------------------------------------------
3390 fDBgrid = &fDBgridPi;
3393 fRegPar = &fRegParPi;
3394 fdEdxMean = &fdEdxMeanPi;
3395 fdEdxRMS = &fdEdxRMSPi;
3398 fDBgrid = &fDBgridKa;
3401 fRegPar = &fRegParKa;
3402 fdEdxMean = &fdEdxMeanKa;
3403 fdEdxRMS = &fdEdxRMSKa;
3406 fDBgrid = &fDBgridPr;
3409 fRegPar = &fRegParPr;
3410 fdEdxMean = &fdEdxMeanPr;
3411 fdEdxRMS = &fdEdxRMSPr;
3414 fDBgrid = &fDBgridEl;
3417 fRegPar = &fRegParEl;
3418 fdEdxMean = &fdEdxMeanEl;
3419 fdEdxRMS = &fdEdxRMSEl;
3422 fDBgrid = &fDBgridMu;
3425 fRegPar = &fRegParMu;
3426 fdEdxMean = &fdEdxMeanMu;
3427 fdEdxRMS = &fdEdxRMSMu;
3433 //-----------------------------------------------------------------------------
3434 void AliTPCtrackerParam::SmearTrack(Double_t *xx,Double_t *xxsm,TMatrixD cov)
3436 //-----------------------------------------------------------------------------
3437 // This function smears track parameters according to streched cov. matrix
3438 //-----------------------------------------------------------------------------
3439 Double_t xref=xxsm[0]; xxsm[0]=0;
3441 AliGausCorr *corgen = new AliGausCorr(cov,5);
3443 corgen->GetGaussN(corr);
3444 // check on fP2(ESD) = fX*fP4-fP2(TPC)
3445 // with fX=xref (not smeared), fP4=xx[4]+corr[4] e fP2=xx[2]+corr[2];
3446 // if fP2(ESD)^2 > 1 -> resmear...
3447 Double_t fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3448 while ( (fp2esd*fp2esd) > 1.0 ) {
3449 Warning("SmearTrack()","Badly smeared track, retrying...");
3450 corgen->GetGaussN(corr);
3451 fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3457 for(Int_t l=0;l<5;l++) xxsm[l] = xx[l]+corr[l];
3461 //-----------------------------------------------------------------------------
3462 Int_t AliTPCtrackerParam::WritedEdx(const Char_t *outName,Int_t pdg) {
3463 //-----------------------------------------------------------------------------
3464 // This function writes the dEdx parameters to the DB
3465 //-----------------------------------------------------------------------------
3468 const char *dirName="Pions";
3469 const char *meanName="dEdxMeanPi";
3470 const char *rmsName="dEdxRMSPi";
3474 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3475 } else { opt="update"; }
3480 meanName="dEdxMeanPi";
3481 rmsName="dEdxRMSPi";
3485 meanName="dEdxMeanKa";
3486 rmsName="dEdxRMSKa";
3490 meanName="dEdxMeanPr";
3491 rmsName="dEdxRMSPr";
3494 dirName="Electrons";
3495 meanName="dEdxMeanEl";
3496 rmsName="dEdxRMSEl";
3500 meanName="dEdxMeanMu";
3501 rmsName="dEdxRMSMu";
3505 TFile *outFile = new TFile(outName,opt);
3506 if(!gDirectory->cd("/dEdx")) {
3507 outFile->mkdir("dEdx");
3508 gDirectory->cd("/dEdx");
3510 TDirectory *dir2 = gDirectory->mkdir(dirName);
3512 fdEdxMean->SetName(meanName); fdEdxMean->Write();
3513 fdEdxRMS->SetName(rmsName); fdEdxRMS->Write();
3521 //-----------------------------------------------------------------------------
3522 Int_t AliTPCtrackerParam::WriteEffs(const Char_t *outName) {
3523 //-----------------------------------------------------------------------------
3524 // This function writes the TPC efficiencies to the DB
3525 //-----------------------------------------------------------------------------
3530 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3531 } else { opt="update"; }
3533 TFile *outFile = new TFile(outName,opt);
3535 outFile->mkdir("Efficiencies");
3536 gDirectory->cd("/Efficiencies");
3537 gDirectory->mkdir("Pions");
3538 gDirectory->mkdir("Kaons");
3539 gDirectory->mkdir("Protons");
3540 gDirectory->mkdir("Electrons");
3541 gDirectory->mkdir("Muons");
3543 gDirectory->cd("/Efficiencies/Pions");
3544 fEffPi.SetName("EffPi");
3546 gDirectory->cd("/Efficiencies/Kaons");
3547 fEffKa.SetName("EffKa");
3549 gDirectory->cd("/Efficiencies/Protons");
3550 fEffPr.SetName("EffPr");
3552 gDirectory->cd("/Efficiencies/Electrons");
3553 fEffEl.SetName("EffEl");
3555 gDirectory->cd("/Efficiencies/Muons");
3556 fEffMu.SetName("EffMu");
3565 //-----------------------------------------------------------------------------
3566 Int_t AliTPCtrackerParam::WritePulls(const Char_t *outName) {
3567 //-----------------------------------------------------------------------------
3568 // This function writes the pulls to the DB
3569 //-----------------------------------------------------------------------------
3573 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3574 } else { opt="update"; }
3576 TFile *outFile = new TFile(outName,opt);
3578 outFile->mkdir("Pulls");
3579 gDirectory->cd("/Pulls");
3580 gDirectory->mkdir("Pions");
3581 gDirectory->mkdir("Kaons");
3582 gDirectory->mkdir("Protons");
3583 gDirectory->mkdir("Electrons");
3584 gDirectory->mkdir("Muons");
3586 for(Int_t i=0;i<5;i++) {
3587 TString pi("PullsPi_"); pi+=i;
3588 TString ka("PullsKa_"); ka+=i;
3589 TString pr("PullsPr_"); pr+=i;
3590 TString el("PullsEl_"); el+=i;
3591 TString mu("PullsMu_"); mu+=i;
3592 fPullsPi[i].SetName(pi.Data());
3593 fPullsKa[i].SetName(ka.Data());
3594 fPullsPr[i].SetName(pr.Data());
3595 fPullsEl[i].SetName(el.Data());
3596 fPullsMu[i].SetName(mu.Data());
3597 gDirectory->cd("/Pulls/Pions");
3598 fPullsPi[i].Write();
3599 gDirectory->cd("/Pulls/Kaons");
3600 fPullsKa[i].Write();
3601 gDirectory->cd("/Pulls/Protons");
3602 fPullsPr[i].Write();
3603 gDirectory->cd("/Pulls/Electrons");
3604 fPullsEl[i].Write();
3605 gDirectory->cd("/Pulls/Muons");
3606 fPullsMu[i].Write();
3613 //-----------------------------------------------------------------------------
3614 Int_t AliTPCtrackerParam::WriteRegParams(const Char_t *outName,Int_t pdg) {
3615 //-----------------------------------------------------------------------------
3616 // This function writes the regularization parameters to the DB
3617 //-----------------------------------------------------------------------------
3620 const char *dirName="Pions";
3621 const char *keyName="RegPions";
3625 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3626 } else { opt="update"; }
3639 keyName="RegProtons";
3642 dirName="Electrons";
3643 keyName="RegElectrons";
3651 TFile *outFile = new TFile(outName,opt);
3652 if(!gDirectory->cd("/RegParams")) {
3653 outFile->mkdir("RegParams");
3654 gDirectory->cd("/RegParams");
3656 TDirectory *dir2 = gDirectory->mkdir(dirName);
3658 fRegPar->Write(keyName);
3666 //-----------------------------------------------------------------------------
3667 //*****************************************************************************
3668 //-----------------------------------------------------------------------------