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 #include "AliESDtrack.h"
94 //-----------------------------
96 Double_t RegFunc(Double_t *x,Double_t *par) {
97 // This is the function used to regularize the covariance matrix
98 Double_t value = par[0]+par[1]/TMath::Power(x[0],par[2]);
102 // structure for DB building
112 Double_t dP0,dP1,dP2,dP3,dP4;
113 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
116 // cov matrix structure
118 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
121 ClassImp(AliTPCtrackerParam)
123 //-----------------------------------------------------------------------------
124 AliTPCtrackerParam::AliTPCtrackerParam(Int_t kcoll, Double_t kBz,
125 const char* evfoldname):TObject(),
126 fEvFolderName(evfoldname),
165 //-----------------------------------------------------------------------------
166 // This is the class conctructor
167 //-----------------------------------------------------------------------------
169 // fBz = kBz; // value of the z component of L3 field (Tesla)
170 // fColl = kcoll; // collision code (0: PbPb6000; 1: pp)
171 // fSelAndSmear = kTRUE; // by default selection and smearing are done
173 if(fBz!=0.4 && fBz!=0.5) {
174 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid field!\n Available: 0.4 or 0.5");
176 if(fColl!=0 && fColl!=1) {
177 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid collision!\n Available: 0 -> PbPb6000\n 1 -> pp");
180 fDBfileName = gSystem->Getenv("ALICE_ROOT");
181 fDBfileName.Append("/TPC/CovMatrixDB_");
182 //fDBfileName = "CovMatrixDB_";
183 if(fColl==0) fDBfileName.Append("PbPb6000");
184 if(fColl==1) fDBfileName.Append("pp");
185 if(fBz==0.4) fDBfileName.Append("_B0.4T.root");
186 // use same DB for 0.4 and 0.5 T; for 0.5 T, correction done in CookTrack()
187 if(fBz==0.5) fDBfileName.Append("_B0.4T.root");
189 //-----------------------------------------------------------------------------
190 AliTPCtrackerParam::~AliTPCtrackerParam() {}
191 //____________________________________________________________________________
192 AliTPCtrackerParam::AliTPCtrackerParam( const AliTPCtrackerParam& p)
233 // dummy copy constructor
235 //----------------------------------------------------------------------------
236 AliTPCtrackerParam::AliTPCseedGeant::AliTPCseedGeant(
237 Double_t x,Double_t y,Double_t z,
238 Double_t px,Double_t py,Double_t pz,
252 //----------------------------------------------------------------------------
253 // Constructor of the geant seeds
254 //----------------------------------------------------------------------------
256 Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
258 fSector = (Int_t)(a/20.);
259 fAlpha = 10.+20.*fSector;
261 fAlpha *= TMath::Pi();
263 //-----------------------------------------------------------------------------
264 Int_t AliTPCtrackerParam::Init() {
265 //-----------------------------------------------------------------------------
266 // This function reads the DB from file
267 //-----------------------------------------------------------------------------
270 printf("+++\n+++ Reading DataBase from:%s\n+++\n+++\n",fDBfileName.Data());
271 // Read paramters from DB file
272 if(!ReadAllData(fDBfileName.Data())) {
273 printf("AliTPCtrackerParam::BuildTPCtracks: \
274 Could not read data from DB\n\n"); return 1;
277 } else printf("\n ! Creating ALL TRUE tracks at TPC inner radius !\n\n");
279 AliMagF *fiel = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
280 Double_t fieval=TMath::Abs((Double_t)fiel->SolenoidField()/10.);
281 printf("Magnetic field is %6.2f Tesla\n",fieval);
283 printf("AliTPCtrackerParam::BuildTPCtracks: Invalid field!");
284 printf("Field selected is: %f T\n",fBz);
285 printf("Field found on file is: %f T\n",fieval);
291 //-----------------------------------------------------------------------------
292 Int_t AliTPCtrackerParam::BuildTPCtracks(AliESDEvent *event) {
293 //-----------------------------------------------------------------------------
294 // This function creates the TPC parameterized tracks and writes them
295 // as AliESDtrack objects in the ESD event
296 //-----------------------------------------------------------------------------
299 if(!event) return -1;
301 AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
303 Error("BuildTPCtracks","Can not get Run Loader from event folder named %s",
304 fEvFolderName.Data());
307 AliLoader* tpcloader = rl->GetLoader("TPCLoader");
308 if (tpcloader == 0x0) {
309 Error("BuildTPCtracks","Can not get TPC Loader from Run Loader.");
313 // Get gAlice object from file
314 if(!gAlice) rl->LoadgAlice();
316 rl->LoadKinematics();
317 tpcloader->LoadHits("read");
319 if(!(gAlice=rl->GetAliRun())) {
320 printf("Cannot get gAlice from Run Loader !\n");
325 AliTPC *tpc=(AliTPC*)gAlice->GetDetector("TPC");
328 AliTPCParam *digp=(AliTPCParam*)gDirectory->Get("75x40_100x60");
331 digp = new AliTPCParamSR();
333 else digp=(AliTPCParam*)gDirectory->Get("75x40_100x60_150x60");
335 if(!digp) { cerr<<"TPC parameters have not been found !\n"; return 1; }
339 AliTPCseedGeant *seed=0;
340 AliTPCtrack *tpctrack=0;
342 Int_t bin,label,pdg,charge;
344 Int_t nParticles,nSeeds,arrentr;
345 //Int_t nSel=0,nAcc=0;
347 Int_t evt=event->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number.
351 // array for TPC tracks
352 TObjArray tArray(20000);
354 // array for TPC seeds with geant info
355 TObjArray sArray(20000);
357 // get the particles stack
358 nParticles = (Int_t)gAlice->GetEvent(evt);
360 Bool_t *done = new Bool_t[nParticles];
361 Int_t *pdgCodes = new Int_t[nParticles];
363 // loop on particles and store pdg codes
364 for(Int_t l=0; l<nParticles; l++) {
365 part = (TParticle*)gAlice->GetMCApp()->Particle(l);
366 pdgCodes[l] = part->GetPdgCode();
370 printf("+++ Number of particles: %d\n",nParticles);
372 // Create the seeds for the TPC tracks at the inner radius of TPC
374 // Get TreeH with hits
375 TTree *th = tpcloader->TreeH();
376 MakeSeedsFromHits(tpc,th,sArray);
378 // Get TreeTR with track references
380 TTree *ttr = rl->TreeTR();
382 MakeSeedsFromRefs(ttr,sArray);
385 nSeeds = sArray.GetEntries();
386 printf("+++ Number of seeds: %d\n",nSeeds);
388 // loop over entries in sArray
389 for(Int_t l=0; l<nSeeds; l++) {
390 //if(l%1==0) printf(" --- Processing seed %d of %d ---\n",l,nSeeds);
392 seed = (AliTPCseedGeant*)sArray.At(l);
395 label = seed->GetLabel();
397 // check if this track has already been processed
398 if(done[label]) continue;
400 // PDG code & electric charge
401 pdg = pdgCodes[label];
402 if(pdg>200 || pdg==-11 || pdg==-13) { charge=1; }
403 else if(pdg<-200 || pdg==11 || pdg==13) { charge=-1; }
405 pdg = TMath::Abs(pdg);
406 if(pdg>3000) pdg=211;
408 if(fSelAndSmear) SetParticle(pdg);
411 sEta = seed->GetEta();
413 // Apply selection according to TPC efficiency
414 //if(TMath::Abs(pdg)==211) nAcc++;
415 if(fSelAndSmear && !SelectedTrack(sPt,sEta)) continue;
416 //if(TMath::Abs(pdg)==211) nSel++;
418 // create AliTPCtrack object
419 BuildTrack(seed,charge);
422 bin = fDBgrid->GetBin(sPt,sEta);
425 //fCovTree = &(fCovTreePi[bin]);
426 fCovTree = fCovTreePi[bin];
429 //fCovTree = &(fCovTreeKa[bin]);
430 fCovTree = fCovTreeKa[bin];
433 //fCovTree = &(fCovTreePr[bin]);
434 fCovTree = fCovTreePr[bin];
437 //fCovTree = &(fCovTreeEl[bin]);
438 fCovTree = fCovTreeEl[bin];
441 //fCovTree = &(fCovTreeMu[bin]);
442 fCovTree = fCovTreeMu[bin];
445 // deal with covariance matrix and smearing of parameters
448 // assign the track a dE/dx and make a rough PID
452 // put track in array
453 AliTPCtrack *iotrack = new AliTPCtrack(fTrack);
454 iotrack->SetLabel(label);
455 tArray.AddLast(iotrack);
456 // Mark track as "done" and register the pdg code
460 } // loop over entries in sArray
462 // sort array with TPC tracks (decreasing pT)
465 // convert to AliESDtrack and write to AliESD
466 arrentr = tArray.GetEntriesFast();
469 for(Int_t l=0; l<arrentr; l++) {
470 tpctrack=(AliTPCtrack*)tArray.UncheckedAt(l);
471 AliESDtrack ioESDtrack;
472 ioESDtrack.UpdateTrackParams(tpctrack,AliESDtrack::kTPCin);
474 wgts[0]=0.; wgts[1]=0.; wgts[2]=0.; wgts[3]=0.; wgts[4]=0.;
475 if(TMath::Abs(tpctrack->GetMass()-0.9)<0.1) {
477 } else if(TMath::Abs(tpctrack->GetMass()-0.5)<0.1) {
483 ioESDtrack.SetESDpid(wgts);
484 event->AddTrack(&ioESDtrack);
491 printf("+++ Number of TPC tracks: %d\n",tracks);
492 //cerr<<"Average Eff: "<<(Float_t)nSel/nAcc<<endl;
499 //-----------------------------------------------------------------------------
500 void AliTPCtrackerParam::AnalyzedEdx(const Char_t *outName,Int_t pdg) {
501 //-----------------------------------------------------------------------------
502 // This function computes the dE/dx for pions, kaons, protons and electrons,
503 // in the [pT,eta] bins.
504 // Input file is CovMatrix_AllEvts.root.
505 //-----------------------------------------------------------------------------
507 gStyle->SetOptStat(0);
508 gStyle->SetOptFit(10001);
510 const char *part="PIONS";
514 // create a chain with compared tracks
515 TChain *cmptrkchain = new ("cmptrktree");
516 cmptrkchain.Add("CovMatrix_AllEvts.root");
517 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
518 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
519 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
523 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
524 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
527 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
528 Int_t entries = (Int_t)cmptrktree->GetEntries();
529 cerr<<" Number of entries: "<<entries<<endl;
531 InitializeKineGrid("DB");
532 InitializeKineGrid("dEdx");
559 const Int_t knTotBins = fDBgrid->GetTotBins();
561 cerr<<" Fit bins: "<<knTotBins<<endl;
564 Int_t *n = new Int_t[knTotBins];
565 Double_t *p = new Double_t[knTotBins];
566 Double_t *ep = new Double_t[knTotBins];
567 Double_t *mean = new Double_t[knTotBins];
568 Double_t *sigma = new Double_t[knTotBins];
570 for(Int_t l=0; l<knTotBins; l++) {
571 n[l] = 1; // set to 1 to avoid divisions by 0
572 p[l] = mean[l] = sigma[l] = ep[l] = 0.;
575 // loop on chain entries for the mean
576 for(Int_t l=0; l<entries; l++) {
577 cmptrktree->GetEvent(l);
578 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
579 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
581 mean[bin] += cmptrk.dEdx;
583 } // loop on chain entries
585 for(Int_t l=0; l<knTotBins; l++) {
588 n[l] = 1; // set to 1 to avoid divisions by 0
591 // loop on chain entries for the sigma
592 for(Int_t l=0; l<entries; l++) {
593 cmptrktree->GetEvent(l);
594 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
595 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
596 if(cmptrk.p<1. && TMath::Abs(cmptrk.p-p[bin])>0.025) continue;
598 sigma[bin] += (cmptrk.dEdx-mean[bin])*(cmptrk.dEdx-mean[bin]);
599 } // loop on chain entries
601 for(Int_t l=0; l<knTotBins; l++) {
602 sigma[l] = TMath::Sqrt(sigma[l]/n[l]);
606 TCanvas *canv = new TCanvas("canv","dEdx",0,0,900,700);
608 // create the graph for dEdx vs p
609 TGraphErrors *gr = new TGraphErrors(knTotBins,p,mean,ep,sigma);
610 TString title(" : dE/dx vs momentum"); title.Prepend(part);
611 TH2F *frame = new TH2F("frame1",title.Data(),2,0.1,50,2,0,ymax);
612 frame->SetXTitle("p [GeV/c]");
613 frame->SetYTitle("dE/dx [a.u.]");
620 for(Int_t i=0; i<knTotBins; i++) {
621 fdEdxMeanPi.SetParam(i,mean[i]);
622 fdEdxRMSPi.SetParam(i,sigma[i]);
626 for(Int_t i=0; i<knTotBins; i++) {
627 fdEdxMeanKa.SetParam(i,mean[i]);
628 fdEdxRMSKa.SetParam(i,sigma[i]);
632 for(Int_t i=0; i<knTotBins; i++) {
633 fdEdxMeanPr.SetParam(i,mean[i]);
634 fdEdxRMSPr.SetParam(i,sigma[i]);
638 for(Int_t i=0; i<knTotBins; i++) {
639 fdEdxMeanEl.SetParam(i,mean[i]);
640 fdEdxRMSEl.SetParam(i,sigma[i]);
644 for(Int_t i=0; i<knTotBins; i++) {
645 fdEdxMeanMu.SetParam(i,mean[i]);
646 fdEdxRMSMu.SetParam(i,sigma[i]);
651 // write results to file
652 WritedEdx(outName,pdg);
662 //-----------------------------------------------------------------------------
663 void AliTPCtrackerParam::AnalyzePulls(const Char_t *outName) {
664 //-----------------------------------------------------------------------------
665 // This function computes the pulls for pions, kaons and electrons,
666 // in the [pT,eta] bins.
667 // Input file is CovMatrix_AllEvts.root.
668 // Output file is pulls.root.
669 //-----------------------------------------------------------------------------
672 // create a chain with compared tracks
673 TChain *cmptrkchain = new ("cmptrktree");
674 cmptrkchain.Add("CovMatrix_AllEvts.root");
675 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
676 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
677 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
681 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
682 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
685 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
686 Int_t entries = (Int_t)cmptrktree->GetEntries();
687 cerr<<" Number of entries: "<<entries<<endl;
690 Char_t hname[100], htitle[100];
693 AliTPCkineGrid pulls[5];
694 TH1F *hDum = new TH1F("name","title",100,-7.,7.);
695 TF1 *g = new TF1("g","gaus");
697 InitializeKineGrid("pulls");
698 InitializeKineGrid("DB");
702 // loop on the particles Pi,Ka,Pr,El,Mu
703 for(Int_t part=0; part<5; part++) {
708 cerr<<" Processing pions ...\n";
712 cerr<<" Processing kaons ...\n";
716 cerr<<" Processing protons ...\n";
720 cerr<<" Processing electrons ...\n";
724 cerr<<" Processing muons ...\n";
728 SetParticle(thisPdg);
730 for(Int_t i=0;i<5;i++) {
731 pulls[i].~AliTPCkineGrid();
732 new(&pulls[i]) AliTPCkineGrid(*(fPulls+i));
734 nTotBins = fDBgrid->GetTotBins();
735 cerr<<"nTotBins = "<<nTotBins<<endl;
737 // create histograms for the all the bins
744 hPulls0 = new TH1F[nTotBins];
745 hPulls1 = new TH1F[nTotBins];
746 hPulls2 = new TH1F[nTotBins];
747 hPulls3 = new TH1F[nTotBins];
748 hPulls4 = new TH1F[nTotBins];
751 for(Int_t i=0; i<nTotBins; i++) {
752 sprintf(hname,"hPulls0%d",i);
753 sprintf(htitle,"P0 pulls for bin %d",i);
754 hDum->SetName(hname); hDum->SetTitle(htitle);
756 sprintf(hname,"hPulls1%d",i);
757 sprintf(htitle,"P1 pulls for bin %d",i);
758 hDum->SetName(hname); hDum->SetTitle(htitle);
760 sprintf(hname,"hPulls2%d",i);
761 sprintf(htitle,"P2 pulls for bin %d",i);
762 hDum->SetName(hname); hDum->SetTitle(htitle);
764 sprintf(hname,"hPulls3%d",i);
765 sprintf(htitle,"P3 pulls for bin %d",i);
766 hDum->SetName(hname); hDum->SetTitle(htitle);
768 sprintf(hname,"hPulls4%d",i);
769 sprintf(htitle,"P4 pulls for bin %d",i);
770 hDum->SetName(hname); hDum->SetTitle(htitle);
774 // loop on chain entries
775 for(Int_t i=0; i<entries; i++) {
776 cmptrktree->GetEvent(i);
777 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
778 // fill histograms with the pulls
779 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
780 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
781 hPulls0[bin].Fill(cmptrk.dP0/TMath::Sqrt(cmptrk.c00));
782 hPulls1[bin].Fill(cmptrk.dP1/TMath::Sqrt(cmptrk.c11));
783 hPulls2[bin].Fill(cmptrk.dP2/TMath::Sqrt(cmptrk.c22));
784 hPulls3[bin].Fill(cmptrk.dP3/TMath::Sqrt(cmptrk.c33));
785 hPulls4[bin].Fill(cmptrk.dP4/TMath::Sqrt(cmptrk.c44));
786 } // loop on chain entries
788 // compute the sigma of the distributions
789 for(Int_t i=0; i<nTotBins; i++) {
790 if(hPulls0[i].GetEntries()>10) {
791 g->SetRange(-3.*hPulls0[i].GetRMS(),3.*hPulls0[i].GetRMS());
792 hPulls0[i].Fit("g","R,Q,N");
793 pulls[0].SetParam(i,g->GetParameter(2));
794 } else pulls[0].SetParam(i,-1.);
795 if(hPulls1[i].GetEntries()>10) {
796 g->SetRange(-3.*hPulls1[i].GetRMS(),3.*hPulls1[i].GetRMS());
797 hPulls1[i].Fit("g","R,Q,N");
798 pulls[1].SetParam(i,g->GetParameter(2));
799 } else pulls[1].SetParam(i,-1.);
800 if(hPulls2[i].GetEntries()>10) {
801 g->SetRange(-3.*hPulls2[i].GetRMS(),3.*hPulls2[i].GetRMS());
802 hPulls2[i].Fit("g","R,Q,N");
803 pulls[2].SetParam(i,g->GetParameter(2));
804 } else pulls[2].SetParam(i,-1.);
805 if(hPulls3[i].GetEntries()>10) {
806 g->SetRange(-3.*hPulls3[i].GetRMS(),3.*hPulls3[i].GetRMS());
807 hPulls3[i].Fit("g","R,Q,N");
808 pulls[3].SetParam(i,g->GetParameter(2));
809 } else pulls[3].SetParam(i,-1.);
810 if(hPulls4[i].GetEntries()>10) {
811 g->SetRange(-3.*hPulls4[i].GetRMS(),3.*hPulls4[i].GetRMS());
812 hPulls4[i].Fit("g","R,Q,N");
813 pulls[4].SetParam(i,g->GetParameter(2));
814 } else pulls[4].SetParam(i,-1.);
820 for(Int_t i=0;i<5;i++) {
821 fPullsPi[i].~AliTPCkineGrid();
822 new(&fPullsPi[i]) AliTPCkineGrid(pulls[i]);
826 for(Int_t i=0;i<5;i++) {
827 fPullsKa[i].~AliTPCkineGrid();
828 new(&fPullsKa[i]) AliTPCkineGrid(pulls[i]);
832 for(Int_t i=0;i<5;i++) {
833 fPullsPr[i].~AliTPCkineGrid();
834 new(&fPullsPr[i]) AliTPCkineGrid(pulls[i]);
838 for(Int_t i=0;i<5;i++) {
839 fPullsEl[i].~AliTPCkineGrid();
840 new(&fPullsEl[i]) AliTPCkineGrid(pulls[i]);
844 for(Int_t i=0;i<5;i++) {
845 fPullsMu[i].~AliTPCkineGrid();
846 new(&fPullsMu[i]) AliTPCkineGrid(pulls[i]);
847 //cerr<<" mu pulls "<<i<<" "<<fPullsMu[i].GetParam(0)<<endl;
858 } // loop on particle species
860 // write pulls to file
866 //-----------------------------------------------------------------------------
867 void AliTPCtrackerParam::AnalyzeResolutions(Int_t pdg) {
868 //-----------------------------------------------------------------------------
869 // This function computes the resolutions:
873 // as a function of Pt
874 // Input file is CovMatrix_AllEvts.root.
875 //-----------------------------------------------------------------------------
878 // create a chain with compared tracks
879 TChain *cmptrkchain = new ("cmptrktree");
880 cmptrkchain.Add("CovMatrix_AllEvts.root");
881 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
882 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
883 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
887 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
888 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
891 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
892 Int_t entries = (Int_t)cmptrktree->GetEntries();
893 cerr<<" Number of entries: "<<entries<<endl;
898 InitializeKineGrid("DB");
899 InitializeKineGrid("eff");
903 const Int_t knPtBins = fEff->GetPointsPt();
904 cerr<<"knPtBins = "<<knPtBins<<endl;
905 Double_t *dP0 = new Double_t[knPtBins];
906 Double_t *dP4 = new Double_t[knPtBins];
907 Double_t *dPtToPt = new Double_t[knPtBins];
908 Double_t *pt = new Double_t[knPtBins];
909 fEff->GetArrayPt(pt);
912 TH1F *hDumP0 = new TH1F("nameP0","dy",100,-0.3,0.3);
913 TH1F *hDumP4 = new TH1F("nameP4","dC",100,-0.0005,0.0005);
914 TH1F *hDumPt = new TH1F("namePt","dp_{T}/p_{T}",100,-0.5,0.5);
916 TF1 *g = new TF1("g","gaus");
918 // create histograms for the all the bins
923 hP0 = new TH1F[knPtBins];
924 hP4 = new TH1F[knPtBins];
925 hPt = new TH1F[knPtBins];
927 for(Int_t i=0; i<knPtBins; i++) {
933 // loop on chain entries
934 for(Int_t i=0; i<entries; i++) {
935 cmptrktree->GetEvent(i);
936 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
937 // fill histograms with the residuals
938 bin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
939 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
940 hP0[bin].Fill(cmptrk.dP0);
941 hP4[bin].Fill(cmptrk.dP4);
942 hPt[bin].Fill(cmptrk.dpt/cmptrk.pt);
943 } // loop on chain entries
946 TCanvas *cP0res = new TCanvas("cP0res","cP0res",0,0,1200,700);
948 TCanvas *cP4res = new TCanvas("cP4res","cP4res",0,0,1200,700);
950 TCanvas *cPtres = new TCanvas("cPtres","cPtres",0,0,1200,700);
954 for(Int_t i=0; i<knPtBins; i++) {
955 cP0res->cd(i+1); hP0[i].Draw();
956 cP4res->cd(i+1); hP4[i].Draw();
957 cPtres->cd(i+1); hPt[i].Draw();
961 // compute the sigma of the distributions
962 for(Int_t i=0; i<knPtBins; i++) {
963 if(hP0[i].GetEntries()>10) {
964 g->SetRange(-3.*hP0[i].GetRMS(),3.*hP0[i].GetRMS());
965 hP0[i].Fit("g","R,Q,N");
966 dP0[i] = g->GetParameter(2);
968 if(hP4[i].GetEntries()>10) {
969 g->SetRange(-3.*hP4[i].GetRMS(),3.*hP4[i].GetRMS());
970 hP4[i].Fit("g","R,Q,N");
971 dP4[i] = g->GetParameter(2);
973 if(hPt[i].GetEntries()>10) {
974 g->SetRange(-3.*hPt[i].GetRMS(),3.*hPt[i].GetRMS());
975 hPt[i].Fit("g","R,Q,N");
976 dPtToPt[i] = 100.*g->GetParameter(2);
977 } else dPtToPt[i] = 0.;
981 TGraph *grdP0 = new TGraph(knPtBins,pt,dP0);
982 TGraph *grdP4 = new TGraph(knPtBins,pt,dP4);
983 TGraph *grdPtToPt = new TGraph(knPtBins,pt,dPtToPt);
985 grdP0->SetMarkerStyle(20); grdP0->SetMarkerColor(2); grdP0->SetMarkerSize(1.5);
986 grdP4->SetMarkerStyle(21); grdP4->SetMarkerColor(3); grdP4->SetMarkerSize(1.5);
987 grdPtToPt->SetMarkerStyle(22); grdPtToPt->SetMarkerColor(4); grdPtToPt->SetMarkerSize(1.5);
990 gStyle->SetOptStat(0);
991 TCanvas *c1 = new TCanvas("c1","dP0",0,0,900,700);
996 TH2F *frame1 = new TH2F("frame1","y resolution VS p_{T} in TPC",2,0.1,30,2,0,0.1);
997 frame1->SetXTitle("p_{T} [GeV/c]");
998 frame1->SetYTitle("#sigma(y) [cm]");
1003 TCanvas *c2 = new TCanvas("c2","dP4",0,0,900,700);
1008 TH2F *frame2 = new TH2F("frame2","C resolution VS p_{T} in TPC",2,0.1,30,2,0,0.0001);
1009 frame2->SetXTitle("p_{T} [GeV/c]");
1010 frame2->SetYTitle("#sigma(C) [1/cm]");
1014 TCanvas *c3 = new TCanvas("c3","dPtToPt",0,0,900,700);
1020 TH2F *frame3 = new TH2F("frame3","Relative p_{T} resolution VS p_{T} in TPC",2,0.1,30,2,0.1,30.);
1021 frame3->SetXTitle("p_{T} [GeV/c]");
1022 frame3->SetYTitle("dp_{T}/p_{T} (%)");
1024 grdPtToPt->Draw("P");
1039 //-----------------------------------------------------------------------------
1040 void AliTPCtrackerParam::BuildTrack(AliTPCseedGeant *s,Int_t ch) {
1041 //-----------------------------------------------------------------------------
1042 // This function uses GEANT info to set true track parameters
1043 //-----------------------------------------------------------------------------
1044 Double_t xref = s->GetXL();
1045 Double_t xx[5],cc[15];
1046 cc[0]=cc[2]=cc[5]=cc[9]=cc[14]=0.;
1047 cc[1]=cc[3]=cc[4]=cc[6]=cc[7]=cc[8]=cc[10]=cc[11]=cc[12]=cc[13]=0.;
1050 TVector3 bfield(0.,0.,-fBz);
1053 // radius [cm] of track projection in (x,y)
1054 Double_t rho = s->GetPt()*100./0.299792458/TMath::Abs(bfield.Z());
1055 // center of track projection in local reference frame
1059 // position (local) and momentum (local) at the seed
1060 // in the bending plane (z=0)
1061 sPos.SetXYZ(s->GetXL(),s->GetYL(),0.);
1062 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.);
1063 TVector3 vrho = sMom.Cross(bfield);
1067 TVector3 vcenter = sPos+vrho;
1069 Double_t x0 = vcenter.X();
1071 // fX = xref X-coordinate of this track (reference plane)
1072 // fAlpha = Alpha Rotation angle the local (TPC sector)
1073 // fP0 = YL Y-coordinate of a track
1074 // fP1 = ZG Z-coordinate of a track
1075 // fP2 = sin(phi) sine of the (local) azimuthal angle
1076 // fP3 = Tgl tangent of the track momentum dip angle
1077 // fP4 = C track curvature
1080 xx[2] = ch/rho*(xref-x0);
1081 xx[3] = s->GetPz()/s->GetPt();
1084 // create the object AliTPCtrack
1085 AliTPCtrack track(xref,s->GetAlpha(),xx,cc,0);
1086 new(&fTrack) AliTPCtrack(track);
1090 //-----------------------------------------------------------------------------
1091 void AliTPCtrackerParam::CompareTPCtracks(
1093 const Char_t* galiceName,
1094 const Char_t* trkGeaName,
1095 const Char_t* trkKalName,
1096 const Char_t* covmatName,
1097 const Char_t* tpceffasciiName,
1098 const Char_t* tpceffrootName) {
1099 //-----------------------------------------------------------------------------
1100 // This function compares tracks from TPC Kalman Filter V2 with
1101 // geant tracks at TPC 1st hit. It gives:
1102 // - a tree with Kalman cov. matrix elements, resolutions, dEdx
1103 // - the efficiencies as a function of particle type, pT, eta
1104 //-----------------------------------------------------------------------------
1106 TFile *kalFile = TFile::Open(trkKalName);
1107 TFile *geaFile = TFile::Open(trkGeaName);
1108 TFile *galiceFile = TFile::Open(galiceName);
1110 // get the AliRun object
1111 AliRun *lAlice = (AliRun*)galiceFile->Get("gAlice");
1114 // create the tree for comparison results
1116 TTree *cmptrktree = new TTree("cmptrktree","results of track comparison");
1117 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");
1119 InitializeKineGrid("eff");
1120 InitializeKineGrid("DB");
1121 Int_t effBins = fEffPi.GetTotPoints();
1122 Int_t effBinsPt = fEffPi.GetPointsPt();
1123 Double_t *pt = new Double_t[effBinsPt];
1124 fEffPi.GetArrayPt(pt);
1131 Int_t pi=0,ka=0,mu=0,el=0,pr=0;
1132 Int_t *geaPi = new Int_t[effBins];
1133 Int_t *geaKa = new Int_t[effBins];
1134 Int_t *geaPr = new Int_t[effBins];
1135 Int_t *geaEl = new Int_t[effBins];
1136 Int_t *geaMu = new Int_t[effBins];
1137 Int_t *kalPi = new Int_t[effBins];
1138 Int_t *kalKa = new Int_t[effBins];
1139 Int_t *kalPr = new Int_t[effBins];
1140 Int_t *kalEl = new Int_t[effBins];
1141 Int_t *kalMu = new Int_t[effBins];
1142 Float_t *effPi = new Float_t[effBins];
1143 Float_t *effKa = new Float_t[effBins];
1144 Float_t *effPr = new Float_t[effBins];
1145 Float_t *effEl = new Float_t[effBins];
1146 Float_t *effMu = new Float_t[effBins];
1148 for(Int_t j=0; j<effBins; j++) {
1149 geaPi[j]=geaKa[j]=geaPr[j]=geaEl[j]=geaMu[j]=0;
1150 kalPi[j]=kalKa[j]=kalPr[j]=kalEl[j]=kalMu[j]=0;
1151 effPi[j]=effKa[j]=effPr[j]=effEl[j]=effMu[j]=-1.;
1156 // loop on events in file
1157 for(Int_t evt=0; evt<nEvents; evt++) {
1158 cerr<<"\n --- Reading tracks for event "<<evt<<" ---\n\n";
1159 sprintf(tname,"TreeT_TPC_%d",evt);
1161 // particles from TreeK
1162 const Int_t knparticles = lAlice->GetEvent(evt);
1164 Int_t *kalLab = new Int_t[knparticles];
1165 for(Int_t i=0; i<knparticles; i++) kalLab[i] = -1;
1168 // tracks from Kalman
1169 TTree *kaltree=(TTree*)kalFile->Get(tname);
1170 if(!kaltree) continue;
1171 AliTPCtrack *kaltrack=new AliTPCtrack;
1172 kaltree->SetBranchAddress("tracks",&kaltrack);
1173 Int_t kalEntries = (Int_t)kaltree->GetEntries();
1175 // tracks from 1st hit
1176 TTree *geatree=(TTree*)geaFile->Get(tname);
1177 if(!geatree) continue;
1178 AliTPCtrack *geatrack=new AliTPCtrack;
1179 geatree->SetBranchAddress("tracks",&geatrack);
1180 Int_t geaEntries = (Int_t)geatree->GetEntries();
1182 cerr<<"+++\n+++ Number of tracks: TPC Kalman = "<<kalEntries<<endl<<"+++ TPC 1st hit = "<<geaEntries<<endl<<"+++\n";
1184 // set pointers for TPC tracks:
1185 // the entry number of the track labelled l is stored in kalLab[l]
1186 Int_t fake=0,mult=0;
1187 for (Int_t j=0; j<kalEntries; j++) {
1188 kaltree->GetEvent(j);
1189 if(kaltrack->GetLabel()>=0) {
1190 if(kalLab[kaltrack->GetLabel()]!=-1) mult++;
1191 kalLab[kaltrack->GetLabel()] = j;
1196 cerr<<"+++ Number of fake tracks in TPC Kalman: "<<fake<<endl;
1197 cerr<<"+++ Number of multiply found tracks in TPC Kalman: "<<mult<<endl;
1200 // Read the labels of the seeds
1203 Bool_t *hasSeed = new Bool_t[knparticles];
1204 for(Int_t i=0; i<knparticles; i++) hasSeed[i] = kFALSE;
1205 sprintf(sname,"seedLabels.%d.dat",evt);
1206 FILE *seedFile = fopen(sname,"r");
1208 ncol = fscanf(seedFile,"%d",&sLabel);
1210 if(sLabel>0) hasSeed[sLabel]=kTRUE;
1215 cerr<<"Doing track comparison...\n";
1216 // loop on tracks at 1st hit
1217 for(Int_t j=0; j<geaEntries; j++) {
1218 geatree->GetEvent(j);
1220 label = geatrack->GetLabel();
1221 part = (TParticle*)lAlice->GetMCApp()->Particle(label);
1223 // use only injected tracks with fixed values of pT
1224 ptgener = part->Pt();
1226 for(Int_t l=0; l<fEffPi.GetPointsPt(); l++) {
1227 if(TMath::Abs(ptgener-pt[l])<0.01) usethis = kTRUE;
1229 if(!usethis) continue;
1231 // check if it has the seed
1232 //if(!hasSeed[label]) continue;
1235 // check if track is entirely contained in a TPC sector
1236 Bool_t out = kFALSE;
1237 for(Int_t l=0; l<10; l++) {
1238 Double_t x = 85. + (250.-85.)*(Double_t)l/9.;
1239 //cerr<<"x "<<x<<" X "<<geatrack->GetX()<<endl;
1240 Double_t y = geatrack->GetY() + (
1241 TMath::Sqrt(1-(geatrack->GetC()*geatrack->GetX()-geatrack->GetEta())*
1242 (geatrack->GetC()*geatrack->GetX()-geatrack->GetEta()))
1243 -TMath::Sqrt(1-(geatrack->GetC()*x-geatrack->GetEta())*
1244 (geatrack->GetC()*x-geatrack->GetEta()))
1247 //cerr<<"y "<<y<<" Y "<<geatrack->GetY()<<endl;
1248 if(y > 0.8*x*TMath::Tan(TMath::Pi()/18)) { out = kTRUE; break; }
1253 cmptrk.pdg = part->GetPdgCode();
1254 cmptrk.eta = part->Eta();
1255 cmptrk.r = TMath::Sqrt(part->Vx()*part->Vx()+part->Vy()*part->Vy());
1257 cmptrk.pt = geatrack->Pt();
1258 cmptrk.cosl = TMath::Cos(TMath::ATan(geatrack->GetTgl()));
1259 cmptrk.p = cmptrk.pt/cmptrk.cosl;
1262 bin = fDBgridPi.GetBin(cmptrk.pt,cmptrk.eta);
1264 if(abs(cmptrk.pdg)==211) geaPi[bin]++;
1265 if(abs(cmptrk.pdg)==321) geaKa[bin]++;
1266 if(abs(cmptrk.pdg)==2212) geaPr[bin]++;
1267 if(abs(cmptrk.pdg)==11) geaEl[bin]++;
1268 if(abs(cmptrk.pdg)==13) geaMu[bin]++;
1271 // check if there is the corresponding track in the TPC kalman and get it
1272 if(kalLab[label]==-1) continue;
1273 kaltree->GetEvent(kalLab[label]);
1275 // and go on only if it has xref = 84.57 cm (inner pad row)
1276 if(kaltrack->GetX()>90.) continue;
1278 if(abs(cmptrk.pdg)==211) { kalPi[bin]++; pi++; }
1279 if(abs(cmptrk.pdg)==321) { kalKa[bin]++; ka++; }
1280 if(abs(cmptrk.pdg)==2212) { kalPr[bin]++; pr++; }
1281 if(abs(cmptrk.pdg)==11) { kalEl[bin]++; el++; }
1282 if(abs(cmptrk.pdg)==13) { kalMu[bin]++; mu++; }
1284 kaltrack->PropagateTo(geatrack->GetX(),1.e-9,0.);
1286 cmptrk.dEdx = kaltrack->GetdEdx();
1288 // compute errors on parameters
1289 dAlpha = kaltrack->GetAlpha()-geatrack->GetAlpha();
1290 if(TMath::Abs(dAlpha)>0.1) { cerr<<" ! WRONG SECTOR !\n"; continue; }
1292 cmptrk.dP0 = kaltrack->GetY()-geatrack->GetY();
1293 cmptrk.dP1 = kaltrack->GetZ()-geatrack->GetZ();
1294 cmptrk.dP2 = kaltrack->GetSnp()-geatrack->GetSnp();
1295 cmptrk.dP3 = kaltrack->GetTgl()-geatrack->GetTgl();
1296 cmptrk.dP4 = kaltrack->GetC()-geatrack->GetC();
1297 cmptrk.dpt = 1/kaltrack->GetSigned1Pt()-1/geatrack->GetSigned1Pt();
1299 // get covariance matrix
1300 // beware: lines 3 and 4 in the matrix are inverted!
1301 //kaltrack->GetCovariance(cc);
1303 cmptrk.c00 = kaltrack->GetSigmaY2();
1304 cmptrk.c10 = kaltrack->GetSigmaZY();
1305 cmptrk.c11 = kaltrack->GetSigmaZ2();
1306 cmptrk.c20 = kaltrack->GetSigmaSnpY();
1307 cmptrk.c21 = kaltrack->GetSigmaSnpY();
1308 cmptrk.c22 = kaltrack->GetSigmaSnp2();
1309 cmptrk.c30 = kaltrack->GetSigmaTglY();
1310 cmptrk.c31 = kaltrack->GetSigmaTglZ();
1311 cmptrk.c32 = kaltrack->GetSigmaTglSnp();
1312 cmptrk.c33 = kaltrack->GetSigmaTgl2();
1313 cmptrk.c40 = kaltrack->GetSigma1PtY();
1314 cmptrk.c41 = kaltrack->GetSigma1PtZ();
1315 cmptrk.c42 = kaltrack->GetSigma1PtSnp();
1316 cmptrk.c43 = kaltrack->GetSigma1PtTgl();
1317 cmptrk.c44 = kaltrack->GetSigma1Pt2();
1322 } // loop on tracks at TPC 1st hit
1325 //delete [] hasSeed;
1327 } // end loop on events in file
1330 cerr<<"+++\n+++ Number of compared tracks: "<<pi+ka+el+mu+pr<<endl;
1331 cerr<<"+++ Pions: "<<pi<<", Kaons: "<<ka<<", Protons : "<<pr<<", Electrons: "<<el<<", Muons: "<<mu<<endl;
1334 // Write tree to file
1335 TFile *outfile = new TFile(covmatName,"recreate");
1336 cmptrktree->Write();
1340 // Write efficiencies to ascii file
1341 FILE *effFile = fopen(tpceffasciiName,"w");
1342 //fprintf(effFile,"%d\n",kalEntries);
1343 for(Int_t j=0; j<effBins; j++) {
1344 if(geaPi[j]>=100) effPi[j]=(Float_t)kalPi[j]/geaPi[j];
1345 if(geaKa[j]>=100) effKa[j]=(Float_t)kalKa[j]/geaKa[j];
1346 if(geaPr[j]>=100) effPr[j]=(Float_t)kalPr[j]/geaPr[j];
1347 if(geaEl[j]>=500) effEl[j]=(Float_t)kalEl[j]/geaEl[j];
1348 if(geaMu[j]>=100) effMu[j]=(Float_t)kalMu[j]/geaMu[j];
1349 fprintf(effFile,"%f %f %f %f %f\n",effPi[j],effKa[j],effPr[j],effEl[j],effMu[j]);
1352 for(Int_t j=0; j<effBins; j++) {
1353 fprintf(effFile,"%d %d %d %d %d\n",geaPi[j],geaKa[j],geaPr[j],geaEl[j],geaMu[j]);
1355 for(Int_t j=0; j<effBins; j++) {
1356 fprintf(effFile,"%d %d %d %d %d\n",kalPi[j],kalKa[j],kalPr[j],kalEl[j],kalMu[j]);
1360 // Write efficiencies to root file
1361 for(Int_t j=0; j<effBins; j++) {
1362 fEffPi.SetParam(j,(Double_t)effPi[j]);
1363 fEffKa.SetParam(j,(Double_t)effKa[j]);
1364 fEffPr.SetParam(j,(Double_t)effPr[j]);
1365 fEffEl.SetParam(j,(Double_t)effEl[j]);
1366 fEffMu.SetParam(j,(Double_t)effMu[j]);
1368 WriteEffs(tpceffrootName);
1370 // delete AliRun object
1371 delete lAlice; lAlice=0;
1373 // close all input files
1376 galiceFile->Close();
1397 //-----------------------------------------------------------------------------
1398 void AliTPCtrackerParam::CookdEdx(Double_t pt,Double_t eta) {
1399 //-----------------------------------------------------------------------------
1400 // This function assigns the track a dE/dx and makes a rough PID
1401 //-----------------------------------------------------------------------------
1403 Double_t mean = fdEdxMean->GetValueAt(pt,eta);
1404 Double_t rms = fdEdxRMS->GetValueAt(pt,eta);
1406 Double_t dEdx = gRandom->Gaus(mean,rms);
1408 fTrack.SetdEdx(dEdx);
1410 AliTPCtrackParam t(fTrack);
1413 Double_t p = TMath::Sqrt(1.+t.GetTgl()*t.GetTgl())*pt;
1415 Double_t massPi = (Double_t)TDatabasePDG::Instance()->GetParticle(211)->Mass();
1416 Double_t massKa = (Double_t)TDatabasePDG::Instance()->GetParticle(321)->Mass();
1417 Double_t massPr = (Double_t)TDatabasePDG::Instance()->GetParticle(2212)->Mass();
1420 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1421 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1423 if (dEdx < 39.+ 12./p/p) {
1424 t.AssignMass(massKa); new(&fTrack) AliTPCtrack(t); return;
1426 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1430 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1431 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1433 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1436 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1438 //-----------------------------------------------------------------------------
1439 void AliTPCtrackerParam::CookTrack(Double_t pt,Double_t eta) {
1440 //-----------------------------------------------------------------------------
1441 // This function deals with covariance matrix and smearing
1442 //-----------------------------------------------------------------------------
1446 Double_t trkKine[1],trkRegPar[3];
1447 Double_t xref,alpha,xx[5],xxsm[5],cc[15];
1450 fCovTree->SetBranchAddress("matrix",&covmat);
1452 // get random entry from the tree
1453 treeEntries = (Int_t)fCovTree->GetEntries();
1454 fCovTree->GetEvent(gRandom->Integer(treeEntries));
1456 // get P and Cosl from track
1457 cosl = TMath::Cos(TMath::ATan(fTrack.GetTgl()));
1458 p = fTrack.Pt()/cosl;
1462 // get covariance matrix from regularized matrix
1463 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(0,l);
1464 cc[0] = covmat.c00*RegFunc(trkKine,trkRegPar);
1466 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(1,l);
1467 cc[2] = covmat.c11*RegFunc(trkKine,trkRegPar);
1468 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(2,l);
1469 cc[3] = covmat.c20*RegFunc(trkKine,trkRegPar);
1471 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(3,l);
1472 cc[5] = covmat.c22*RegFunc(trkKine,trkRegPar);
1474 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(4,l);
1475 cc[7] = covmat.c31*RegFunc(trkKine,trkRegPar);
1477 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(5,l);
1478 cc[9] = covmat.c33*RegFunc(trkKine,trkRegPar);
1479 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(6,l);
1480 cc[10]= covmat.c40*RegFunc(trkKine,trkRegPar);
1482 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(7,l);
1483 cc[12]= covmat.c42*RegFunc(trkKine,trkRegPar);
1485 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(8,l);
1486 cc[14]= covmat.c44*RegFunc(trkKine,trkRegPar);
1489 TMatrixD covMatSmear(5,5);
1490 covMatSmear = GetSmearingMatrix(cc,pt,eta);
1492 // get track original parameters
1493 xref =fTrack.GetX();
1494 alpha=fTrack.GetAlpha();
1495 xx[0]=fTrack.GetY();
1496 xx[1]=fTrack.GetZ();
1497 xx[2]=fTrack.GetSnp();
1498 xx[3]=fTrack.GetTgl();
1499 xx[4]=fTrack.GetC();
1501 // use smearing matrix to smear the original parameters
1503 SmearTrack(xx,xxsm,covMatSmear);
1505 AliTPCtrack track(xref,alpha,xxsm,cc,0);
1506 new(&fTrack) AliTPCtrack(track);
1510 //-----------------------------------------------------------------------------
1511 void AliTPCtrackerParam::DrawEffs(const Char_t* inName,Int_t pdg) {
1512 //-----------------------------------------------------------------------------
1513 // This function draws the TPC efficiencies in the [pT,eta] bins
1514 //-----------------------------------------------------------------------------
1519 const Int_t kn = fEff->GetPointsPt();
1520 Double_t *effsA = new Double_t[kn];
1521 Double_t *effsB = new Double_t[kn];
1522 Double_t *effsC = new Double_t[kn];
1523 Double_t *pt = new Double_t[kn];
1525 fEff->GetArrayPt(pt);
1526 for(Int_t i=0;i<kn;i++) {
1527 effsA[i] = fEff->GetParam(i,0);
1528 effsB[i] = fEff->GetParam(i,1);
1529 effsC[i] = fEff->GetParam(i,2);
1532 TGraph *grA = new TGraph(kn,pt,effsA);
1533 TGraph *grB = new TGraph(kn,pt,effsB);
1534 TGraph *grC = new TGraph(kn,pt,effsC);
1536 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1537 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1538 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1540 TString title("Distribution of the TPC efficiencies");
1543 title.Prepend("PIONS - ");
1546 title.Prepend("KAONS - ");
1549 title.Prepend("PROTONS - ");
1552 title.Prepend("ELECTRONS - ");
1555 title.Prepend("MUONS - ");
1560 gStyle->SetOptStat(0);
1561 TCanvas *c = new TCanvas("c","effs",0,0,900,700);
1566 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,1);
1567 frame->SetXTitle("p_{T} [GeV/c]");
1573 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1574 leg->AddEntry(grA,"|#eta|<0.3","p");
1575 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1576 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1577 leg->SetFillColor(0);
1587 //-----------------------------------------------------------------------------
1588 void AliTPCtrackerParam::DrawPulls(const Char_t* inName,Int_t pdg,
1590 //-----------------------------------------------------------------------------
1591 // This function draws the pulls in the [pT,eta] bins
1592 //-----------------------------------------------------------------------------
1597 const Int_t kn = (fPulls+par)->GetPointsPt();
1598 Double_t *pullsA = new Double_t[kn];
1599 Double_t *pullsB = new Double_t[kn];
1600 Double_t *pullsC = new Double_t[kn];
1601 Double_t *pt = new Double_t[kn];
1602 (fPulls+par)->GetArrayPt(pt);
1603 for(Int_t i=0;i<kn;i++) {
1604 pullsA[i] = (fPulls+par)->GetParam(i,0);
1605 pullsB[i] = (fPulls+par)->GetParam(i,1);
1606 pullsC[i] = (fPulls+par)->GetParam(i,2);
1609 TGraph *grA = new TGraph(kn,pt,pullsA);
1610 TGraph *grB = new TGraph(kn,pt,pullsB);
1611 TGraph *grC = new TGraph(kn,pt,pullsC);
1613 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1614 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1615 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1617 TString title("Distribution of the pulls: ");
1620 title.Prepend("PIONS - ");
1623 title.Prepend("KAONS - ");
1626 title.Prepend("PROTONS - ");
1629 title.Prepend("ELECTRONS - ");
1632 title.Prepend("MUONS - ");
1643 title.Append(" #eta");
1646 title.Append("tg #lambda");
1653 gStyle->SetOptStat(0);
1654 TCanvas *c = new TCanvas("c","pulls",0,0,900,700);
1659 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,2);
1660 frame->SetXTitle("p_{T} [GeV/c]");
1666 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1667 leg->AddEntry(grA,"|#eta|<0.3","p");
1668 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1669 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1670 leg->SetFillColor(0);
1680 //-----------------------------------------------------------------------------
1681 TMatrixD AliTPCtrackerParam::GetSmearingMatrix(Double_t* cc,Double_t pt,
1682 Double_t eta) const {
1683 //-----------------------------------------------------------------------------
1684 // This function stretches the covariance matrix according to the pulls
1685 //-----------------------------------------------------------------------------
1687 TMatrixD covMat(5,5);
1690 covMat(1,0)=cc[1]; covMat(0,1)=covMat(1,0);
1692 covMat(2,0)=cc[3]; covMat(0,2)=covMat(2,0);
1693 covMat(2,1)=cc[4]; covMat(1,2)=covMat(2,1);
1695 covMat(3,0)=cc[6]; covMat(0,3)=covMat(3,0);
1696 covMat(3,1)=cc[7]; covMat(1,3)=covMat(3,1);
1697 covMat(3,2)=cc[8]; covMat(2,3)=covMat(3,2);
1699 covMat(4,0)=cc[10]; covMat(0,4)=covMat(4,0);
1700 covMat(4,1)=cc[11]; covMat(1,4)=covMat(4,1);
1701 covMat(4,2)=cc[12]; covMat(2,4)=covMat(4,2);
1702 covMat(4,3)=cc[13]; covMat(3,4)=covMat(4,3);
1706 TMatrixD stretchMat(5,5);
1707 for(Int_t k=0;k<5;k++) {
1708 for(Int_t l=0;l<5;l++) {
1713 for(Int_t i=0;i<5;i++) {
1714 stretchMat(i,i) = (fPulls+i)->GetValueAt(pt,eta);
1715 if(stretchMat(i,i)==0.) stretchMat(i,i) = 1.;
1718 TMatrixD mat(stretchMat,TMatrixD::kMult,covMat);
1719 TMatrixD covMatSmear(mat,TMatrixD::kMult,stretchMat);
1723 //-----------------------------------------------------------------------------
1724 void AliTPCtrackerParam::InitializeKineGrid(Option_t* which) {
1725 //-----------------------------------------------------------------------------
1726 // This function initializes ([pt,eta] points) the data members AliTPCkineGrid
1727 // which = "DB" -> initialize fDBgrid... members
1728 // "eff" -> initialize fEff... members
1729 // "pulls" -> initialize fPulls... members
1730 // "dEdx" -> initialize fdEdx... members
1731 //-----------------------------------------------------------------------------
1733 const char *db = strstr(which,"DB");
1734 const char *eff = strstr(which,"eff");
1735 const char *pulls = strstr(which,"pulls");
1736 const char *dEdx = strstr(which,"dEdx");
1739 Int_t nEta=0, nPt=0;
1741 Double_t etaPoints[2] = {0.3,0.6};
1742 Double_t etaBins[3] = {0.15,0.45,0.75};
1744 Double_t ptPoints[9] = {0.4,0.6,0.8,1.2,1.7,3.,5.,8.,15.};
1745 Double_t ptBins[10] = {0.3,0.5,0.7,1.,1.5,2.,4.,6.,10.,20.};
1748 Double_t *eta=0,*pt=0;
1762 AliTPCkineGrid *dummy=0;
1765 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1766 new(&fDBgridPi) AliTPCkineGrid(*dummy);
1767 new(&fDBgridKa) AliTPCkineGrid(*dummy);
1768 new(&fDBgridPr) AliTPCkineGrid(*dummy);
1769 new(&fDBgridEl) AliTPCkineGrid(*dummy);
1770 new(&fDBgridMu) AliTPCkineGrid(*dummy);
1774 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1775 new(&fEffPi) AliTPCkineGrid(*dummy);
1776 new(&fEffKa) AliTPCkineGrid(*dummy);
1777 new(&fEffPr) AliTPCkineGrid(*dummy);
1778 new(&fEffEl) AliTPCkineGrid(*dummy);
1779 new(&fEffMu) AliTPCkineGrid(*dummy);
1783 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1784 for(Int_t i=0;i<5;i++) new(&fPullsPi[i]) AliTPCkineGrid(*dummy);
1785 for(Int_t i=0;i<5;i++) new(&fPullsKa[i]) AliTPCkineGrid(*dummy);
1786 for(Int_t i=0;i<5;i++) new(&fPullsPr[i]) AliTPCkineGrid(*dummy);
1787 for(Int_t i=0;i<5;i++) new(&fPullsEl[i]) AliTPCkineGrid(*dummy);
1788 for(Int_t i=0;i<5;i++) new(&fPullsMu[i]) AliTPCkineGrid(*dummy);
1792 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1793 new(&fdEdxMeanPi) AliTPCkineGrid(*dummy);
1794 new(&fdEdxRMSPi) AliTPCkineGrid(*dummy);
1795 new(&fdEdxMeanKa) AliTPCkineGrid(*dummy);
1796 new(&fdEdxRMSKa) AliTPCkineGrid(*dummy);
1797 new(&fdEdxMeanPr) AliTPCkineGrid(*dummy);
1798 new(&fdEdxRMSPr) AliTPCkineGrid(*dummy);
1799 new(&fdEdxMeanEl) AliTPCkineGrid(*dummy);
1800 new(&fdEdxRMSEl) AliTPCkineGrid(*dummy);
1801 new(&fdEdxMeanMu) AliTPCkineGrid(*dummy);
1802 new(&fdEdxRMSMu) AliTPCkineGrid(*dummy);
1808 //-----------------------------------------------------------------------------
1809 void AliTPCtrackerParam::MakeDataBase() {
1810 //-----------------------------------------------------------------------------
1811 // This function creates the DB file and store in it:
1812 // - TPC Efficiencies for pi,ka,pr,el,mu (AliTPCkineGrid class)
1813 // - Pulls for pi,ka,el (AliTPCkineGrid class)
1814 // - Regularization parameters for pi,ka,el (TMatrixD class)
1815 // - dE/dx parameterization for pi,ka,pr,el (AliTPCkineGrid class)
1816 // - Regularized cov. matrices for pi,ka,el (COVMATRIX structure)
1817 //-----------------------------------------------------------------------------
1819 // define some file names
1820 const char *effFile ="TPCeff.root";
1821 const char *pullsFile ="pulls.root";
1822 const char *regPiFile ="regPi.root";
1823 const char *regKaFile ="regKa.root";
1824 const char *regPrFile ="regPr.root";
1825 const char *regElFile ="regEl.root";
1826 const char *regMuFile ="regMu.root";
1827 const char *dEdxPiFile="dEdxPi.root";
1828 const char *dEdxKaFile="dEdxKa.root";
1829 const char *dEdxPrFile="dEdxPr.root";
1830 const char *dEdxElFile="dEdxEl.root";
1831 const char *dEdxMuFile="dEdxMu.root";
1832 const char *cmFile ="CovMatrix_AllEvts.root";
1834 Char_t *cmFile1 ="CovMatrix_AllEvts_1.root";
1835 Char_t *cmFile2 ="CovMatrix_AllEvts_2.root";
1836 Char_t *cmFile3 ="CovMatrix_AllEvts_3.root";
1839 // store the effieciencies
1841 WriteEffs(fDBfileName.Data());
1844 ReadPulls(pullsFile);
1845 WritePulls(fDBfileName.Data());
1847 //store the regularization parameters
1848 ReadRegParams(regPiFile,211);
1849 WriteRegParams(fDBfileName.Data(),211);
1850 ReadRegParams(regKaFile,321);
1851 WriteRegParams(fDBfileName.Data(),321);
1852 ReadRegParams(regPrFile,2212);
1853 WriteRegParams(fDBfileName.Data(),2212);
1854 ReadRegParams(regElFile,11);
1855 WriteRegParams(fDBfileName.Data(),11);
1856 ReadRegParams(regMuFile,13);
1857 WriteRegParams(fDBfileName.Data(),13);
1859 // store the dEdx parameters
1860 ReaddEdx(dEdxPiFile,211);
1861 WritedEdx(fDBfileName.Data(),211);
1862 ReaddEdx(dEdxKaFile,321);
1863 WritedEdx(fDBfileName.Data(),321);
1864 ReaddEdx(dEdxPrFile,2212);
1865 WritedEdx(fDBfileName.Data(),2212);
1866 ReaddEdx(dEdxElFile,11);
1867 WritedEdx(fDBfileName.Data(),11);
1868 ReaddEdx(dEdxMuFile,13);
1869 WritedEdx(fDBfileName.Data(),13);
1873 // store the regularized covariance matrices
1875 InitializeKineGrid("DB");
1877 const Int_t knBinsPi = fDBgridPi.GetTotBins();
1878 const Int_t knBinsKa = fDBgridKa.GetTotBins();
1879 const Int_t knBinsPr = fDBgridPr.GetTotBins();
1880 const Int_t knBinsEl = fDBgridEl.GetTotBins();
1881 const Int_t knBinsMu = fDBgridMu.GetTotBins();
1884 // create the trees for cov. matrices
1886 TTree *covTreePi1 = NULL;
1887 covTreePi1 = new TTree[knBinsPi];
1889 TTree *covTreeKa1 = NULL;
1890 covTreeKa1 = new TTree[knBinsKa];
1891 // trees for protons
1892 TTree *covTreePr1 = NULL;
1893 covTreePr1 = new TTree[knBinsPr];
1894 // trees for electrons
1895 TTree *covTreeEl1 = NULL;
1896 covTreeEl1 = new TTree[knBinsEl];
1898 TTree *covTreeMu1 = NULL;
1899 covTreeMu1 = new TTree[knBinsMu];
1901 Char_t hname[100], htitle[100];
1905 for(Int_t i=0; i<knBinsPi; i++) {
1906 sprintf(hname,"CovTreePi_bin%d",i);
1907 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1908 covTreePi1[i].SetName(hname); covTreePi1[i].SetTitle(htitle);
1909 covTreePi1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",5000000);
1911 for(Int_t i=0; i<knBinsKa; i++) {
1912 sprintf(hname,"CovTreeKa_bin%d",i);
1913 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1914 covTreeKa1[i].SetName(hname); covTreeKa1[i].SetTitle(htitle);
1915 covTreeKa1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1917 for(Int_t i=0; i<knBinsPr; i++) {
1918 sprintf(hname,"CovTreePr_bin%d",i);
1919 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1920 covTreePr1[i].SetName(hname); covTreePr1[i].SetTitle(htitle);
1921 covTreePr1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1923 for(Int_t i=0; i<knBinsEl; i++) {
1924 sprintf(hname,"CovTreeEl_bin%d",i);
1925 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1926 covTreeEl1[i].SetName(hname); covTreeEl1[i].SetTitle(htitle);
1927 covTreeEl1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1929 for(Int_t i=0; i<knBinsMu; i++) {
1930 sprintf(hname,"CovTreeMu_bin%d",i);
1931 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1932 covTreeMu1[i].SetName(hname); covTreeMu1[i].SetTitle(htitle);
1933 covTreeMu1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1937 // create the chain with the compared tracks
1938 TChain *cmptrktree = new TChain("cmptrktree");
1939 cmptrkchain.Add(cmFile1);
1940 cmptrkchain.Add(cmFile2);
1941 cmptrkchain.Add(cmFile3);
1944 TFile *infile = TFile::Open(cmFile);
1945 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
1948 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
1949 Int_t entries = (Int_t)cmptrktree->GetEntries();
1950 cerr<<" Number of entries: "<<entries<<endl;
1952 Int_t trkPdg,trkBin;
1953 Double_t trkKine[1],trkRegPar[3];
1954 Int_t *nPerBinPi = new Int_t[knBinsPi];
1955 for(Int_t k=0;k<knBinsPi;k++) nPerBinPi[k]=0;
1956 Int_t *nPerBinKa = new Int_t[knBinsKa];
1957 for(Int_t k=0;k<knBinsKa;k++) nPerBinKa[k]=0;
1958 Int_t *nPerBinMu = new Int_t[knBinsMu];
1959 for(Int_t k=0;k<knBinsMu;k++) nPerBinMu[k]=0;
1960 Int_t *nPerBinEl = new Int_t[knBinsEl];
1961 for(Int_t k=0;k<knBinsEl;k++) nPerBinEl[k]=0;
1962 Int_t *nPerBinPr = new Int_t[knBinsPr];
1963 for(Int_t k=0;k<knBinsPr;k++) nPerBinPr[k]=0;
1965 // loop on chain entries
1966 for(Int_t l=0; l<entries; l++) {
1967 if(l % 10000 == 0) cerr<<"--- Processing track "<<l<<" of "<<entries<<" ---"<<endl;
1969 cmptrktree->GetEvent(l);
1971 trkPdg = TMath::Abs(cmptrk.pdg);
1972 // use only pions, kaons, protons, electrons, muons
1973 if(trkPdg!=211 && trkPdg!=321 && trkPdg!=2212 && trkPdg!=11 && trkPdg!=13) continue;
1974 SetParticle(trkPdg);
1975 trkBin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
1976 //cerr<<cmptrk.pt<<" "<<cmptrk.eta<<" "<<trkBin<<endl;
1978 if(trkPdg==211 && nPerBinPi[trkBin]>=5000) continue;
1979 if(trkPdg==321 && nPerBinKa[trkBin]>=5000) continue;
1980 if(trkPdg==2212 && nPerBinPr[trkBin]>=5000) continue;
1981 if(trkPdg==11 && nPerBinEl[trkBin]>=5000) continue;
1982 if(trkPdg==13 && nPerBinMu[trkBin]>=5000) continue;
1984 trkKine[0] = cmptrk.p;
1986 // get regularized covariance matrix
1987 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(0,k);
1988 covmat.c00 = cmptrk.c00/RegFunc(trkKine,trkRegPar);
1989 covmat.c10 = cmptrk.c10;
1990 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(1,k);
1991 covmat.c11 = cmptrk.c11/RegFunc(trkKine,trkRegPar);
1992 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(2,k);
1993 covmat.c20 = cmptrk.c20/RegFunc(trkKine,trkRegPar);
1994 covmat.c21 = cmptrk.c21;
1995 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(3,k);
1996 covmat.c22 = cmptrk.c22/RegFunc(trkKine,trkRegPar);
1997 covmat.c30 = cmptrk.c30;
1998 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(4,k);
1999 covmat.c31 = cmptrk.c31/RegFunc(trkKine,trkRegPar);
2000 covmat.c32 = cmptrk.c32;
2001 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(5,k);
2002 covmat.c33 = cmptrk.c33/RegFunc(trkKine,trkRegPar);
2003 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(6,k);
2004 covmat.c40 = cmptrk.c40/RegFunc(trkKine,trkRegPar);
2005 covmat.c41 = cmptrk.c41;
2006 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(7,k);
2007 covmat.c42 = cmptrk.c42/RegFunc(trkKine,trkRegPar);
2008 covmat.c43 = cmptrk.c43;
2009 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(8,k);
2010 covmat.c44 = cmptrk.c44/RegFunc(trkKine,trkRegPar);
2015 covTreePi1[trkBin].Fill();
2016 nPerBinPi[trkBin]++;
2019 covTreeKa1[trkBin].Fill();
2020 nPerBinKa[trkBin]++;
2022 case 2212: // protons
2023 covTreePr1[trkBin].Fill();
2024 nPerBinPr[trkBin]++;
2026 case 11: // electrons
2027 covTreeEl1[trkBin].Fill();
2028 nPerBinEl[trkBin]++;
2031 covTreeMu1[trkBin].Fill();
2032 nPerBinMu[trkBin]++;
2035 } // loop on chain entries
2037 // store all trees the DB file
2038 TFile *dbfile = new TFile(fDBfileName.Data(),"update");
2039 dbfile->mkdir("CovMatrices");
2040 gDirectory->cd("/CovMatrices");
2041 gDirectory->mkdir("Pions");
2042 gDirectory->mkdir("Kaons");
2043 gDirectory->mkdir("Protons");
2044 gDirectory->mkdir("Electrons");
2045 gDirectory->mkdir("Muons");
2047 gDirectory->cd("/CovMatrices/Pions");
2048 fDBgridPi.SetName("DBgridPi"); fDBgridPi.Write();
2049 for(Int_t i=0;i<knBinsPi;i++) covTreePi1[i].Write();
2051 gDirectory->cd("/CovMatrices/Kaons");
2052 fDBgridKa.SetName("DBgridKa"); fDBgridKa.Write();
2053 for(Int_t i=0;i<knBinsKa;i++) covTreeKa1[i].Write();
2055 gDirectory->cd("/CovMatrices/Protons");
2056 fDBgridPr.SetName("DBgridPr"); fDBgridPr.Write();
2057 for(Int_t i=0;i<knBinsPr;i++) covTreePr1[i].Write();
2059 gDirectory->cd("/CovMatrices/Electrons");
2060 fDBgridEl.SetName("DBgridEl"); fDBgridEl.Write();
2061 for(Int_t i=0;i<knBinsEl;i++) covTreeEl1[i].Write();
2063 gDirectory->cd("/CovMatrices/Muons");
2064 fDBgridMu.SetName("DBgridMu"); fDBgridMu.Write();
2065 for(Int_t i=0;i<knBinsMu;i++) covTreeMu1[i].Write();
2068 delete [] nPerBinPi;
2069 delete [] nPerBinKa;
2070 delete [] nPerBinPr;
2071 delete [] nPerBinEl;
2072 delete [] nPerBinMu;
2076 //-----------------------------------------------------------------------------
2077 void AliTPCtrackerParam::MakeSeedsFromHits(AliTPC *tpc,TTree *th,
2078 TObjArray &seedArray) const {
2079 //-----------------------------------------------------------------------------
2080 // This function makes the seeds for tracks from the 1st hits in the TPC
2081 //-----------------------------------------------------------------------------
2083 Double_t xg,yg,zg,px,py,pz,pt;
2085 Int_t nTracks=(Int_t)th->GetEntries();
2087 cout<<"+++ Number of \"primary tracks\"(entries in TreeH): "<<nTracks<<
2090 AliTPChit *tpcHit=0;
2092 // loop over entries in TreeH
2093 for(Int_t l=0; l<nTracks; l++) {
2094 if(l%1000==0) cerr<<" --- Processing primary track "
2095 <<l<<" of "<<nTracks<<" ---\r";
2099 tpcHit=(AliTPChit*)tpc->FirstHit(-1);
2100 for( ; tpcHit; tpcHit=(AliTPChit*)tpc->NextHit() ) {
2101 if(tpcHit->fQ !=0.) continue;
2102 // Get particle momentum at hit
2103 px=tpcHit->X(); py=tpcHit->Y(); pz=tpcHit->Z();
2105 pt=TMath::Sqrt(px*px+py*py);
2106 // reject hits with Pt<mag*0.45 GeV/c
2107 if(pt<(fBz*0.45)) continue;
2110 label=tpcHit->Track();
2112 if((tpcHit=(AliTPChit*)tpc->NextHit())==0) break;
2113 if(tpcHit->fQ != 0.) continue;
2114 // Get global coordinates of hit
2115 xg=tpcHit->X(); yg=tpcHit->Y(); zg=tpcHit->Z();
2116 if(TMath::Sqrt(xg*xg+yg*yg)>90.) continue;
2119 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2121 // reject tracks which are not in the TPC acceptance
2122 if(!ioseed->InTPCAcceptance()) { delete ioseed; continue; }
2124 // put seed in array
2125 seedArray.AddLast(ioseed);
2128 } // loop over entries in TreeH
2132 //-----------------------------------------------------------------------------
2133 void AliTPCtrackerParam::MakeSeedsFromRefs(TTree *ttr,
2134 TObjArray &seedArray) const {
2135 //-----------------------------------------------------------------------------
2136 // This function makes the seeds for tracks from the track references
2137 //-----------------------------------------------------------------------------
2139 Double_t xg,yg,zg,px,py,pz,pt;
2143 TClonesArray *tkRefArray = new TClonesArray("AliTrackReference");
2145 TBranch *b =(TBranch*)ttr->GetBranch("TPC");
2146 if(!b) {cerr<<"TPC branch of TreeTR not found"<<endl; return; }
2147 b->SetAddress(&tkRefArray);
2148 Int_t nTkRef = (Int_t)b->GetEntries();
2149 cerr<<"+++ Number of entries in TreeTR(TPC): "<<nTkRef<<"\n";
2151 // loop on track references
2152 for(Int_t l=0; l<nTkRef; l++){
2153 //if(l%1000==0) cerr<<" --- Processing primary track "
2154 // <<l<<" of "<<nTkRef<<" ---\r";
2155 if(!b->GetEvent(l)) continue;
2156 nnn = tkRefArray->GetEntriesFast();
2158 if(nnn <= 0) continue;
2159 for(k=0; k<nnn; k++) {
2160 AliTrackReference *tkref = (AliTrackReference*)tkRefArray->UncheckedAt(k);
2168 label = tkref->GetTrack();
2170 pt=TMath::Sqrt(px*px+py*py);
2171 // reject hits with Pt<mag*0.45 GeV/c
2172 if(pt<(fBz*0.45)) continue;
2175 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2177 // reject if not at the inner part of TPC
2178 if(TMath::Abs(ioseed->GetXL()-83.8) > 0.2) {
2179 //cerr<<"not at TPC inner part: XL = "<<ioseed->GetXL()<<endl;
2180 delete ioseed; continue;
2183 // reject tracks which are not in the TPC acceptance
2184 if(!ioseed->InTPCAcceptance()) {
2185 delete ioseed; continue;
2188 // put seed in array
2189 seedArray.AddLast(ioseed);
2194 } // loop on track references
2201 //-----------------------------------------------------------------------------
2202 void AliTPCtrackerParam::MergeEvents(Int_t evFirst,Int_t evLast) {
2203 //-----------------------------------------------------------------------------
2204 // This function: 1) merges the files from track comparison
2205 // (beware: better no more than 100 events per file)
2206 // 2) computes the average TPC efficiencies
2207 //-----------------------------------------------------------------------------
2209 const char *outName="TPCeff.root";
2211 // merge files with tracks
2212 cerr<<" ******** MERGING FILES **********\n\n";
2214 // create the chain for the tree of compared tracks
2215 TChain ch1("cmptrktree");
2216 TChain ch2("cmptrktree");
2217 TChain ch3("cmptrktree");
2219 for(Int_t j=evFirst; j<=evLast; j++) {
2220 cerr<<"Processing event "<<j<<endl;
2222 TString covName("CovMatrix.");
2224 covName.Append(".root");
2226 if(gSystem->AccessPathName(covName.Data(),kFileExists)) continue;
2229 if(j<=100) ch1.Add(covName.Data());
2230 if(j>100 && j<=200) ch2.Add(covName.Data());
2231 if(j>200) ch3.Add(covName.Data());
2235 // merge chain in one file
2237 covOut = new TFile("CovMatrix_AllEvts_1.root","recreate");
2238 ch1.Merge(covOut,1000000000);
2241 covOut = new TFile("CovMatrix_AllEvts_2.root","recreate");
2242 ch2.Merge(covOut,1000000000);
2245 covOut = new TFile("CovMatrix_AllEvts_3.root","recreate");
2246 ch3.Merge(covOut,1000000000);
2252 cerr<<" ***** EFFICIENCIES ******\n\n";
2254 ReadEffs("TPCeff.1.root");
2256 Int_t n = fEffPi.GetTotPoints();
2257 Double_t *avEffPi = new Double_t[n];
2258 Double_t *avEffKa = new Double_t[n];
2259 Double_t *avEffPr = new Double_t[n];
2260 Double_t *avEffEl = new Double_t[n];
2261 Double_t *avEffMu = new Double_t[n];
2262 Int_t *evtsPi = new Int_t[n];
2263 Int_t *evtsKa = new Int_t[n];
2264 Int_t *evtsPr = new Int_t[n];
2265 Int_t *evtsEl = new Int_t[n];
2266 Int_t *evtsMu = new Int_t[n];
2268 for(Int_t j=0; j<n; j++) {
2269 avEffPi[j]=avEffKa[j]=avEffPr[j]=avEffEl[j]=avEffMu[j]=0.;
2270 evtsPi[j]=evtsKa[j]=evtsPr[j]=evtsEl[j]=evtsMu[j]=0;
2273 for(Int_t j=evFirst; j<=evLast; j++) {
2274 cerr<<"Processing event "<<j<<endl;
2276 TString effName("TPCeff.");
2278 effName.Append(".root");
2280 if(gSystem->AccessPathName(effName.Data(),kFileExists)) continue;
2282 ReadEffs(effName.Data());
2284 for(Int_t k=0; k<n; k++) {
2285 if(fEffPi.GetParam(k)>=0.) {avEffPi[k]+=fEffPi.GetParam(k); evtsPi[k]++;}
2286 if(fEffKa.GetParam(k)>=0.) {avEffKa[k]+=fEffKa.GetParam(k); evtsKa[k]++;}
2287 if(fEffPr.GetParam(k)>=0.) {avEffPr[k]+=fEffPr.GetParam(k); evtsPr[k]++;}
2288 if(fEffEl.GetParam(k)>=0.) {avEffEl[k]+=fEffEl.GetParam(k); evtsEl[k]++;}
2289 if(fEffMu.GetParam(k)>=0.) {avEffMu[k]+=fEffMu.GetParam(k); evtsMu[k]++;}
2294 // compute average efficiencies
2295 for(Int_t j=0; j<n; j++) {
2296 if(evtsPi[j]==0) evtsPi[j]++;
2297 fEffPi.SetParam(j,(Double_t)avEffPi[j]/evtsPi[j]);
2298 if(evtsKa[j]==0) evtsKa[j]++;
2299 fEffKa.SetParam(j,(Double_t)avEffKa[j]/evtsKa[j]);
2300 if(evtsPr[j]==0) evtsPr[j]++;
2301 fEffPr.SetParam(j,(Double_t)avEffPr[j]/evtsPr[j]);
2302 if(evtsEl[j]==0) evtsEl[j]++;
2303 fEffEl.SetParam(j,(Double_t)avEffEl[j]/evtsEl[j]);
2304 if(evtsMu[j]==0) evtsMu[j]++;
2305 fEffMu.SetParam(j,(Double_t)avEffMu[j]/evtsMu[j]);
2308 // write efficiencies to a file
2324 //-----------------------------------------------------------------------------
2325 Int_t AliTPCtrackerParam::ReadAllData(const Char_t* inName) {
2326 //-----------------------------------------------------------------------------
2327 // This function reads all parameters from the DB
2328 //-----------------------------------------------------------------------------
2330 if(!ReadEffs(inName)) return 0;
2331 if(!ReadPulls(inName)) return 0;
2332 if(!ReadRegParams(inName,211)) return 0;
2333 if(!ReadRegParams(inName,321)) return 0;
2334 if(!ReadRegParams(inName,2212)) return 0;
2335 if(!ReadRegParams(inName,11)) return 0;
2336 if(!ReadRegParams(inName,13)) return 0;
2337 if(!ReaddEdx(inName,211)) return 0;
2338 if(!ReaddEdx(inName,321)) return 0;
2339 if(!ReaddEdx(inName,2212)) return 0;
2340 if(!ReaddEdx(inName,11)) return 0;
2341 if(!ReaddEdx(inName,13)) return 0;
2342 if(!ReadDBgrid(inName)) return 0;
2343 if(!ReadCovTrees(inName)) return 0;
2347 //-----------------------------------------------------------------------------
2348 Int_t AliTPCtrackerParam::ReadCovTrees(const Char_t* inName) {
2349 //-----------------------------------------------------------------------------
2350 // This function reads the covariance matrix trees from the DB
2351 //-----------------------------------------------------------------------------
2353 if(gSystem->AccessPathName(inName,kFileExists)) {
2354 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2359 TFile *inFile = TFile::Open(inName);
2362 Int_t nBinsPi = fDBgridPi.GetTotBins();
2363 for(Int_t l=0; l<nBinsPi; l++) {
2364 str = "/CovMatrices/Pions/CovTreePi_bin";
2366 fCovTreePi[l] = (TTree*)inFile->Get(str.Data());
2367 //fCovTree = (TTree*)inFile->Get(str.Data());
2368 //fCovTreePi[l] = new TTree(*fCovTree);
2370 Int_t nBinsKa = fDBgridKa.GetTotBins();
2371 for(Int_t l=0; l<nBinsKa; l++) {
2372 str = "/CovMatrices/Kaons/CovTreeKa_bin";
2374 fCovTreeKa[l] = (TTree*)inFile->Get(str.Data());
2375 //fCovTree = (TTree*)inFile->Get(str.Data());
2376 //fCovTreeKa[l] = new TTree(*fCovTree);
2378 Int_t nBinsPr = fDBgridPr.GetTotBins();
2379 for(Int_t l=0; l<nBinsPr; l++) {
2381 str = "/CovMatrices/Pions/CovTreePi_bin";
2383 str = "/CovMatrices/Protons/CovTreePr_bin";
2386 fCovTreePr[l] = (TTree*)inFile->Get(str.Data());
2387 //fCovTree = (TTree*)inFile->Get(str.Data());
2388 //fCovTreePr[l] = new TTree(*fCovTree);
2390 Int_t nBinsEl = fDBgridEl.GetTotBins();
2391 for(Int_t l=0; l<nBinsEl; l++) {
2392 str = "/CovMatrices/Electrons/CovTreeEl_bin";
2394 fCovTreeEl[l] = (TTree*)inFile->Get(str.Data());
2395 //fCovTree = (TTree*)inFile->Get(str.Data());
2396 //fCovTreeEl[l] = new TTree(*fCovTree);
2398 Int_t nBinsMu = fDBgridMu.GetTotBins();
2399 for(Int_t l=0; l<nBinsMu; l++) {
2401 str = "/CovMatrices/Pions/CovTreePi_bin";
2403 str = "/CovMatrices/Muons/CovTreeMu_bin";
2406 fCovTreeMu[l] = (TTree*)inFile->Get(str.Data());
2407 //fCovTree = (TTree*)inFile->Get(str.Data());
2408 //fCovTreeMu[l] = new TTree(*fCovTree);
2415 //-----------------------------------------------------------------------------
2416 Int_t AliTPCtrackerParam::ReaddEdx(const Char_t* inName,Int_t pdg) {
2417 //-----------------------------------------------------------------------------
2418 // This function reads the dEdx parameters from the DB
2419 //-----------------------------------------------------------------------------
2421 if(gSystem->AccessPathName(inName,kFileExists)) {
2422 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2425 TFile *inFile = TFile::Open(inName);
2428 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2429 fdEdxMeanPi.~AliTPCkineGrid();
2430 new(&fdEdxMeanPi) AliTPCkineGrid(*fdEdxMean);
2431 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2432 fdEdxRMSPi.~AliTPCkineGrid();
2433 new(&fdEdxRMSPi) AliTPCkineGrid(*fdEdxRMS);
2436 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxMeanKa");
2437 fdEdxMeanKa.~AliTPCkineGrid();
2438 new(&fdEdxMeanKa) AliTPCkineGrid(*fdEdxMean);
2439 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxRMSKa");
2440 fdEdxRMSKa.~AliTPCkineGrid();
2441 new(&fdEdxRMSKa) AliTPCkineGrid(*fdEdxRMS);
2444 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxMeanPr");
2445 fdEdxMeanPr.~AliTPCkineGrid();
2446 new(&fdEdxMeanPr) AliTPCkineGrid(*fdEdxMean);
2447 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxRMSPr");
2448 fdEdxRMSPr.~AliTPCkineGrid();
2449 new(&fdEdxRMSPr) AliTPCkineGrid(*fdEdxRMS);
2452 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxMeanEl");
2453 fdEdxMeanEl.~AliTPCkineGrid();
2454 new(&fdEdxMeanEl) AliTPCkineGrid(*fdEdxMean);
2455 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxRMSEl");
2456 fdEdxRMSEl.~AliTPCkineGrid();
2457 new(&fdEdxRMSEl) AliTPCkineGrid(*fdEdxRMS);
2461 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2462 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2464 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxMeanMu");
2465 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxRMSMu");
2467 fdEdxMeanMu.~AliTPCkineGrid();
2468 new(&fdEdxMeanMu) AliTPCkineGrid(*fdEdxMean);
2469 fdEdxRMSMu.~AliTPCkineGrid();
2470 new(&fdEdxRMSMu) AliTPCkineGrid(*fdEdxRMS);
2477 //-----------------------------------------------------------------------------
2478 Int_t AliTPCtrackerParam::ReadDBgrid(const Char_t* inName) {
2479 //-----------------------------------------------------------------------------
2480 // This function reads the kine grid from the DB
2481 //-----------------------------------------------------------------------------
2483 if(gSystem->AccessPathName(inName,kFileExists)) {
2484 cerr<<"AliTPCtrackerParam::ReadCovMatrices: "<<inName<<" not found\n";
2487 TFile *inFile = TFile::Open(inName);
2489 // first read the DB grid for the different particles
2490 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2491 fDBgridPi.~AliTPCkineGrid();
2492 new(&fDBgridPi) AliTPCkineGrid(*fDBgrid);
2493 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Kaons/DBgridKa");
2494 fDBgridKa.~AliTPCkineGrid();
2495 new(&fDBgridKa) AliTPCkineGrid(*fDBgrid);
2497 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2499 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Protons/DBgridPr");
2501 fDBgridPr.~AliTPCkineGrid();
2502 new(&fDBgridPr) AliTPCkineGrid(*fDBgrid);
2503 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Electrons/DBgridEl");
2504 fDBgridEl.~AliTPCkineGrid();
2505 new(&fDBgridEl) AliTPCkineGrid(*fDBgrid);
2507 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2509 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Muons/DBgridMu");
2511 fDBgridMu.~AliTPCkineGrid();
2512 new(&fDBgridMu) AliTPCkineGrid(*fDBgrid);
2518 //-----------------------------------------------------------------------------
2519 Int_t AliTPCtrackerParam::ReadEffs(const Char_t* inName) {
2520 //-----------------------------------------------------------------------------
2521 // This function reads the TPC efficiencies from the DB
2522 //-----------------------------------------------------------------------------
2524 if(gSystem->AccessPathName(inName,kFileExists)) {
2525 cerr<<"AliTPCtrackerParam::ReadEffs: "<<inName<<" not found\n";
2528 TFile *inFile = TFile::Open(inName);
2530 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Pions/EffPi");
2531 fEffPi.~AliTPCkineGrid();
2532 new(&fEffPi) AliTPCkineGrid(*fEff);
2533 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Kaons/EffKa");
2534 fEffKa.~AliTPCkineGrid();
2535 new(&fEffKa) AliTPCkineGrid(*fEff);
2536 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Protons/EffPr");
2537 fEffPr.~AliTPCkineGrid();
2538 new(&fEffPr) AliTPCkineGrid(*fEff);
2539 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Electrons/EffEl");
2540 fEffEl.~AliTPCkineGrid();
2541 new(&fEffEl) AliTPCkineGrid(*fEff);
2542 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Muons/EffMu");
2543 fEffMu.~AliTPCkineGrid();
2544 new(&fEffMu) AliTPCkineGrid(*fEff);
2550 //-----------------------------------------------------------------------------
2551 Int_t AliTPCtrackerParam::ReadPulls(const Char_t* inName) {
2552 //-----------------------------------------------------------------------------
2553 // This function reads the pulls from the DB
2554 //-----------------------------------------------------------------------------
2556 if(gSystem->AccessPathName(inName,kFileExists)) {
2557 cerr<<"AliTPCtrackerParam::ReadPulls: "<<inName<<" not found\n";
2560 TFile *inFile = TFile::Open(inName);
2562 for(Int_t i=0; i<5; i++) {
2563 TString pi("/Pulls/Pions/PullsPi_"); pi+=i;
2564 TString ka("/Pulls/Kaons/PullsKa_"); ka+=i;
2565 TString pr("/Pulls/Protons/PullsPr_"); pr+=i;
2566 TString el("/Pulls/Electrons/PullsEl_"); el+=i;
2567 TString mu("/Pulls/Muons/PullsMu_"); mu+=i;
2569 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2570 fPullsPi[i].~AliTPCkineGrid();
2571 new(&fPullsPi[i]) AliTPCkineGrid(*fPulls);
2573 fPulls = (AliTPCkineGrid*)inFile->Get(ka.Data());
2574 fPullsKa[i].~AliTPCkineGrid();
2575 new(&fPullsKa[i]) AliTPCkineGrid(*fPulls);
2578 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2580 fPulls = (AliTPCkineGrid*)inFile->Get(pr.Data());
2582 fPullsPr[i].~AliTPCkineGrid();
2583 new(&fPullsPr[i]) AliTPCkineGrid(*fPulls);
2585 fPulls = (AliTPCkineGrid*)inFile->Get(el.Data());
2586 fPullsEl[i].~AliTPCkineGrid();
2587 new(&fPullsEl[i]) AliTPCkineGrid(*fPulls);
2590 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2592 fPulls = (AliTPCkineGrid*)inFile->Get(mu.Data());
2594 fPullsMu[i].~AliTPCkineGrid();
2595 new(&fPullsMu[i]) AliTPCkineGrid(*fPulls);
2602 //-----------------------------------------------------------------------------
2603 Int_t AliTPCtrackerParam::ReadRegParams(const Char_t* inName,Int_t pdg) {
2604 //-----------------------------------------------------------------------------
2605 // This function reads the regularization parameters from the DB
2606 //-----------------------------------------------------------------------------
2608 if(gSystem->AccessPathName(inName,kFileExists)) {
2609 cerr<<"AliTPCtrackerParam::ReadRegParams: "<<inName<<" not found\n";
2611 // Introduced change to "reverse" the TMatrixD read from file.
2612 // Needed because storage mode of TMatrixD changed from column-wise
2613 // to rwo-wise in ROOT.
2615 // A.Dainese 03/06/05
2617 TMatrixD dummyMatrix(9,3);
2619 TFile *inFile = TFile::Open(inName);
2622 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2623 new(&fRegParPi) TMatrixD(*fRegPar);
2624 //printf("before\n");
2625 //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));
2626 dummyMatrix = fRegParPi;
2627 fRegParPi(0,0) = dummyMatrix(0,0);
2628 fRegParPi(0,1) = dummyMatrix(0,1);
2629 fRegParPi(0,2) = dummyMatrix(0,2);
2630 fRegParPi(1,0) = dummyMatrix(3,0);
2631 fRegParPi(1,1) = dummyMatrix(1,1);
2632 fRegParPi(1,2) = dummyMatrix(1,2);
2633 fRegParPi(2,0) = dummyMatrix(6,0);
2634 fRegParPi(2,1) = dummyMatrix(3,2);
2635 fRegParPi(2,2) = dummyMatrix(2,2);
2636 fRegParPi(3,0) = dummyMatrix(1,0);
2637 fRegParPi(3,1) = dummyMatrix(4,0);
2638 fRegParPi(3,2) = dummyMatrix(7,0);
2639 fRegParPi(4,0) = dummyMatrix(3,1);
2640 fRegParPi(4,1) = dummyMatrix(4,1);
2641 fRegParPi(4,2) = dummyMatrix(7,1);
2642 fRegParPi(5,0) = dummyMatrix(6,1);
2643 fRegParPi(5,1) = dummyMatrix(4,2);
2644 fRegParPi(5,2) = dummyMatrix(7,2);
2645 fRegParPi(6,0) = dummyMatrix(2,0);
2646 fRegParPi(6,1) = dummyMatrix(5,0);
2647 fRegParPi(6,2) = dummyMatrix(8,0);
2648 fRegParPi(7,0) = dummyMatrix(2,1);
2649 fRegParPi(7,1) = dummyMatrix(5,1);
2650 fRegParPi(7,2) = dummyMatrix(8,1);
2651 fRegParPi(8,0) = dummyMatrix(6,2);
2652 fRegParPi(8,1) = dummyMatrix(5,2);
2653 fRegParPi(8,2) = dummyMatrix(8,2);
2654 //printf("after\n");
2655 //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));
2658 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Kaons/RegKaons");
2659 new(&fRegParKa) TMatrixD(*fRegPar);
2660 dummyMatrix = fRegParKa;
2661 fRegParKa(0,0) = dummyMatrix(0,0);
2662 fRegParKa(0,1) = dummyMatrix(0,1);
2663 fRegParKa(0,2) = dummyMatrix(0,2);
2664 fRegParKa(1,0) = dummyMatrix(3,0);
2665 fRegParKa(1,1) = dummyMatrix(1,1);
2666 fRegParKa(1,2) = dummyMatrix(1,2);
2667 fRegParKa(2,0) = dummyMatrix(6,0);
2668 fRegParKa(2,1) = dummyMatrix(3,2);
2669 fRegParKa(2,2) = dummyMatrix(2,2);
2670 fRegParKa(3,0) = dummyMatrix(1,0);
2671 fRegParKa(3,1) = dummyMatrix(4,0);
2672 fRegParKa(3,2) = dummyMatrix(7,0);
2673 fRegParKa(4,0) = dummyMatrix(3,1);
2674 fRegParKa(4,1) = dummyMatrix(4,1);
2675 fRegParKa(4,2) = dummyMatrix(7,1);
2676 fRegParKa(5,0) = dummyMatrix(6,1);
2677 fRegParKa(5,1) = dummyMatrix(4,2);
2678 fRegParKa(5,2) = dummyMatrix(7,2);
2679 fRegParKa(6,0) = dummyMatrix(2,0);
2680 fRegParKa(6,1) = dummyMatrix(5,0);
2681 fRegParKa(6,2) = dummyMatrix(8,0);
2682 fRegParKa(7,0) = dummyMatrix(2,1);
2683 fRegParKa(7,1) = dummyMatrix(5,1);
2684 fRegParKa(7,2) = dummyMatrix(8,1);
2685 fRegParKa(8,0) = dummyMatrix(6,2);
2686 fRegParKa(8,1) = dummyMatrix(5,2);
2687 fRegParKa(8,2) = dummyMatrix(8,2);
2691 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2693 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Protons/RegProtons");
2695 new(&fRegParPr) TMatrixD(*fRegPar);
2696 dummyMatrix = fRegParPr;
2697 fRegParPr(0,0) = dummyMatrix(0,0);
2698 fRegParPr(0,1) = dummyMatrix(0,1);
2699 fRegParPr(0,2) = dummyMatrix(0,2);
2700 fRegParPr(1,0) = dummyMatrix(3,0);
2701 fRegParPr(1,1) = dummyMatrix(1,1);
2702 fRegParPr(1,2) = dummyMatrix(1,2);
2703 fRegParPr(2,0) = dummyMatrix(6,0);
2704 fRegParPr(2,1) = dummyMatrix(3,2);
2705 fRegParPr(2,2) = dummyMatrix(2,2);
2706 fRegParPr(3,0) = dummyMatrix(1,0);
2707 fRegParPr(3,1) = dummyMatrix(4,0);
2708 fRegParPr(3,2) = dummyMatrix(7,0);
2709 fRegParPr(4,0) = dummyMatrix(3,1);
2710 fRegParPr(4,1) = dummyMatrix(4,1);
2711 fRegParPr(4,2) = dummyMatrix(7,1);
2712 fRegParPr(5,0) = dummyMatrix(6,1);
2713 fRegParPr(5,1) = dummyMatrix(4,2);
2714 fRegParPr(5,2) = dummyMatrix(7,2);
2715 fRegParPr(6,0) = dummyMatrix(2,0);
2716 fRegParPr(6,1) = dummyMatrix(5,0);
2717 fRegParPr(6,2) = dummyMatrix(8,0);
2718 fRegParPr(7,0) = dummyMatrix(2,1);
2719 fRegParPr(7,1) = dummyMatrix(5,1);
2720 fRegParPr(7,2) = dummyMatrix(8,1);
2721 fRegParPr(8,0) = dummyMatrix(6,2);
2722 fRegParPr(8,1) = dummyMatrix(5,2);
2723 fRegParPr(8,2) = dummyMatrix(8,2);
2726 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Electrons/RegElectrons");
2727 new(&fRegParEl) TMatrixD(*fRegPar);
2728 dummyMatrix = fRegParEl;
2729 fRegParEl(0,0) = dummyMatrix(0,0);
2730 fRegParEl(0,1) = dummyMatrix(0,1);
2731 fRegParEl(0,2) = dummyMatrix(0,2);
2732 fRegParEl(1,0) = dummyMatrix(3,0);
2733 fRegParEl(1,1) = dummyMatrix(1,1);
2734 fRegParEl(1,2) = dummyMatrix(1,2);
2735 fRegParEl(2,0) = dummyMatrix(6,0);
2736 fRegParEl(2,1) = dummyMatrix(3,2);
2737 fRegParEl(2,2) = dummyMatrix(2,2);
2738 fRegParEl(3,0) = dummyMatrix(1,0);
2739 fRegParEl(3,1) = dummyMatrix(4,0);
2740 fRegParEl(3,2) = dummyMatrix(7,0);
2741 fRegParEl(4,0) = dummyMatrix(3,1);
2742 fRegParEl(4,1) = dummyMatrix(4,1);
2743 fRegParEl(4,2) = dummyMatrix(7,1);
2744 fRegParEl(5,0) = dummyMatrix(6,1);
2745 fRegParEl(5,1) = dummyMatrix(4,2);
2746 fRegParEl(5,2) = dummyMatrix(7,2);
2747 fRegParEl(6,0) = dummyMatrix(2,0);
2748 fRegParEl(6,1) = dummyMatrix(5,0);
2749 fRegParEl(6,2) = dummyMatrix(8,0);
2750 fRegParEl(7,0) = dummyMatrix(2,1);
2751 fRegParEl(7,1) = dummyMatrix(5,1);
2752 fRegParEl(7,2) = dummyMatrix(8,1);
2753 fRegParEl(8,0) = dummyMatrix(6,2);
2754 fRegParEl(8,1) = dummyMatrix(5,2);
2755 fRegParEl(8,2) = dummyMatrix(8,2);
2759 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2761 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Muons/RegMuons");
2763 new(&fRegParMu) TMatrixD(*fRegPar);
2764 dummyMatrix = fRegParMu;
2765 fRegParMu(0,0) = dummyMatrix(0,0);
2766 fRegParMu(0,1) = dummyMatrix(0,1);
2767 fRegParMu(0,2) = dummyMatrix(0,2);
2768 fRegParMu(1,0) = dummyMatrix(3,0);
2769 fRegParMu(1,1) = dummyMatrix(1,1);
2770 fRegParMu(1,2) = dummyMatrix(1,2);
2771 fRegParMu(2,0) = dummyMatrix(6,0);
2772 fRegParMu(2,1) = dummyMatrix(3,2);
2773 fRegParMu(2,2) = dummyMatrix(2,2);
2774 fRegParMu(3,0) = dummyMatrix(1,0);
2775 fRegParMu(3,1) = dummyMatrix(4,0);
2776 fRegParMu(3,2) = dummyMatrix(7,0);
2777 fRegParMu(4,0) = dummyMatrix(3,1);
2778 fRegParMu(4,1) = dummyMatrix(4,1);
2779 fRegParMu(4,2) = dummyMatrix(7,1);
2780 fRegParMu(5,0) = dummyMatrix(6,1);
2781 fRegParMu(5,1) = dummyMatrix(4,2);
2782 fRegParMu(5,2) = dummyMatrix(7,2);
2783 fRegParMu(6,0) = dummyMatrix(2,0);
2784 fRegParMu(6,1) = dummyMatrix(5,0);
2785 fRegParMu(6,2) = dummyMatrix(8,0);
2786 fRegParMu(7,0) = dummyMatrix(2,1);
2787 fRegParMu(7,1) = dummyMatrix(5,1);
2788 fRegParMu(7,2) = dummyMatrix(8,1);
2789 fRegParMu(8,0) = dummyMatrix(6,2);
2790 fRegParMu(8,1) = dummyMatrix(5,2);
2791 fRegParMu(8,2) = dummyMatrix(8,2);
2798 //-----------------------------------------------------------------------------
2799 void AliTPCtrackerParam::RegularizeCovMatrix(const Char_t *outName,Int_t pdg) {
2800 //-----------------------------------------------------------------------------
2801 // This function regularizes the elements of the covariance matrix
2802 // that show a momentum depence:
2803 // c00, c11, c22, c33, c44, c20, c24, c40, c31
2804 // The regularization is done separately for pions, kaons, electrons:
2805 // give "Pion","Kaon" or "Electron" as first argument.
2806 //-----------------------------------------------------------------------------
2808 gStyle->SetOptStat(0);
2809 gStyle->SetOptFit(10001);
2812 const char *part="Pions - ";
2814 InitializeKineGrid("DB");
2816 const Int_t kfitbins = fDBgrid->GetBinsPt();
2817 cerr<<" Fit bins: "<<kfitbins<<endl;
2823 cerr<<" Processing pions ...\n";
2828 cerr<<" Processing kaons ...\n";
2830 case 2212: //protons
2833 cerr<<" Processing protons ...\n";
2835 case 11: // electrons
2837 part="Electrons - ";
2838 cerr<<" Processing electrons ...\n";
2843 cerr<<" Processing muons ...\n";
2849 // create a chain with compared tracks
2850 TChain *cmptrkchain = new ("cmptrktree");
2851 cmptrkchain.Add("CovMatrix_AllEvts.root");
2852 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
2853 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
2854 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
2858 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
2859 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
2862 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
2863 Int_t entries = (Int_t)cmptrktree->GetEntries();
2867 Int_t *n = new Int_t[kfitbins];
2868 Int_t *n00 = new Int_t[kfitbins];
2869 Int_t *n11 = new Int_t[kfitbins];
2870 Int_t *n20 = new Int_t[kfitbins];
2871 Int_t *n22 = new Int_t[kfitbins];
2872 Int_t *n31 = new Int_t[kfitbins];
2873 Int_t *n33 = new Int_t[kfitbins];
2874 Int_t *n40 = new Int_t[kfitbins];
2875 Int_t *n42 = new Int_t[kfitbins];
2876 Int_t *n44 = new Int_t[kfitbins];
2877 Double_t *p = new Double_t[kfitbins];
2878 Double_t *ep = new Double_t[kfitbins];
2879 Double_t *mean00 = new Double_t[kfitbins];
2880 Double_t *mean11 = new Double_t[kfitbins];
2881 Double_t *mean20 = new Double_t[kfitbins];
2882 Double_t *mean22 = new Double_t[kfitbins];
2883 Double_t *mean31 = new Double_t[kfitbins];
2884 Double_t *mean33 = new Double_t[kfitbins];
2885 Double_t *mean40 = new Double_t[kfitbins];
2886 Double_t *mean42 = new Double_t[kfitbins];
2887 Double_t *mean44 = new Double_t[kfitbins];
2888 Double_t *sigma00 = new Double_t[kfitbins];
2889 Double_t *sigma11 = new Double_t[kfitbins];
2890 Double_t *sigma20 = new Double_t[kfitbins];
2891 Double_t *sigma22 = new Double_t[kfitbins];
2892 Double_t *sigma31 = new Double_t[kfitbins];
2893 Double_t *sigma33 = new Double_t[kfitbins];
2894 Double_t *sigma40 = new Double_t[kfitbins];
2895 Double_t *sigma42 = new Double_t[kfitbins];
2896 Double_t *sigma44 = new Double_t[kfitbins];
2897 Double_t *rmean = new Double_t[kfitbins];
2898 Double_t *rsigma = new Double_t[kfitbins];
2901 for(Int_t l=0; l<kfitbins; l++) {
2903 n00[l]=n11[l]=n20[l]=n22[l]=n31[l]=n33[l]=n40[l]=n42[l]=n44[l]=1;
2905 mean00[l]=mean11[l]=mean20[l]=mean22[l]=mean31[l]=mean33[l]=mean40[l]=mean42[l]=mean44[l]=0.;
2906 sigma00[l]=sigma11[l]=sigma20[l]=sigma22[l]=sigma31[l]=sigma33[l]=sigma40[l]=sigma42[l]=sigma44[l]=0.;
2909 // loop on chain entries for mean
2910 for(Int_t l=0; l<entries; l++) {
2911 cmptrktree->GetEvent(l);
2912 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2913 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2916 mean00[pbin]+=cmptrk.c00;
2917 mean11[pbin]+=cmptrk.c11;
2918 mean20[pbin]+=cmptrk.c20;
2919 mean22[pbin]+=cmptrk.c22;
2920 mean31[pbin]+=cmptrk.c31;
2921 mean33[pbin]+=cmptrk.c33;
2922 mean40[pbin]+=cmptrk.c40;
2923 mean42[pbin]+=cmptrk.c42;
2924 mean44[pbin]+=cmptrk.c44;
2925 } // loop on chain entries
2927 for(Int_t l=0; l<kfitbins; l++) {
2940 // loop on chain entries for sigma
2941 for(Int_t l=0; l<entries; l++) {
2942 cmptrktree->GetEvent(l);
2943 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2944 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2945 if(TMath::Abs(cmptrk.c00-mean00[pbin])<0.4*mean00[pbin]) { n00[pbin]++;
2946 sigma00[pbin]+=(cmptrk.c00-mean00[pbin])*(cmptrk.c00-mean00[pbin]); }
2947 if(TMath::Abs(cmptrk.c11-mean11[pbin])<0.4*mean11[pbin]) { n11[pbin]++;
2948 sigma11[pbin]+=(cmptrk.c11-mean11[pbin])*(cmptrk.c11-mean11[pbin]); }
2949 if(TMath::Abs(cmptrk.c20-mean20[pbin])<0.4*mean20[pbin]) { n20[pbin]++;
2950 sigma20[pbin]+=(cmptrk.c20-mean20[pbin])*(cmptrk.c20-mean20[pbin]); }
2951 if(TMath::Abs(cmptrk.c22-mean22[pbin])<0.4*mean22[pbin]) { n22[pbin]++;
2952 sigma22[pbin]+=(cmptrk.c22-mean22[pbin])*(cmptrk.c22-mean22[pbin]); }
2953 if(TMath::Abs(cmptrk.c31-mean31[pbin])<-0.4*mean31[pbin]) { n31[pbin]++;
2954 sigma31[pbin]+=(cmptrk.c31-mean31[pbin])*(cmptrk.c31-mean31[pbin]); }
2955 if(TMath::Abs(cmptrk.c33-mean33[pbin])<0.4*mean33[pbin]) { n33[pbin]++;
2956 sigma33[pbin]+=(cmptrk.c33-mean33[pbin])*(cmptrk.c33-mean33[pbin]); }
2957 if(TMath::Abs(cmptrk.c40-mean40[pbin])<0.4*mean40[pbin]) { n40[pbin]++;
2958 sigma40[pbin]+=(cmptrk.c40-mean40[pbin])*(cmptrk.c40-mean40[pbin]); }
2959 if(TMath::Abs(cmptrk.c42-mean42[pbin])<0.4*mean42[pbin]) { n42[pbin]++;
2960 sigma42[pbin]+=(cmptrk.c42-mean42[pbin])*(cmptrk.c42-mean42[pbin]); }
2961 if(TMath::Abs(cmptrk.c44-mean44[pbin])<0.4*mean44[pbin]) { n44[pbin]++;
2962 sigma44[pbin]+=(cmptrk.c44-mean44[pbin])*(cmptrk.c44-mean44[pbin]); }
2963 } // loop on chain entries
2965 for(Int_t l=0; l<kfitbins; l++) {
2966 sigma00[l] = TMath::Sqrt(sigma00[l]/n00[l]);
2967 sigma11[l] = TMath::Sqrt(sigma11[l]/n11[l]);
2968 sigma20[l] = TMath::Sqrt(sigma20[l]/n20[l]);
2969 sigma22[l] = TMath::Sqrt(sigma22[l]/n22[l]);
2970 sigma31[l] = TMath::Sqrt(sigma31[l]/n31[l]);
2971 sigma33[l] = TMath::Sqrt(sigma33[l]/n33[l]);
2972 sigma40[l] = TMath::Sqrt(sigma40[l]/n40[l]);
2973 sigma42[l] = TMath::Sqrt(sigma42[l]/n42[l]);
2974 sigma44[l] = TMath::Sqrt(sigma44[l]/n44[l]);
2979 TF1 *func = new TF1("RegFunc",RegFunc,0.23,50.,3);
2980 func->SetParNames("A_meas","A_scatt","B");
2982 // line to draw on the plots
2983 TLine *lin = new TLine(-1,1,1.69,1);
2984 lin->SetLineStyle(2);
2985 lin->SetLineWidth(2);
2987 // matrix used to store fit results
2988 TMatrixD fitRes(9,3);
2992 // create the canvas
2993 TCanvas *canv00 = new TCanvas("canv00","c00",0,0,700,900);
2994 canv00->Divide(1,2);
2995 // create the graph for cov matrix
2996 TGraphErrors *gr00 = new TGraphErrors(kfitbins,p,mean00,ep,sigma00);
2997 TString title00("C(y,y)"); title00.Prepend(part);
2998 TH2F *frame00 = new TH2F("frame00",title00.Data(),2,0.1,50,2,0,5e-3);
2999 frame00->SetXTitle("p [GeV/c]");
3000 canv00->cd(1); gPad->SetLogx();
3003 // Sets initial values for parameters
3004 func->SetParameters(1.6e-3,1.9e-4,1.5);
3005 // Fit points in range defined by function
3006 gr00->Fit("RegFunc","R,Q");
3007 func->GetParameters(fitpar);
3008 for(Int_t i=0; i<3; i++) fitRes(0,i)=fitpar[i];
3009 for(Int_t l=0; l<kfitbins; l++) {
3010 rmean[l] = mean00[l]/RegFunc(&p[l],fitpar);
3011 rsigma[l] = sigma00[l]/RegFunc(&p[l],fitpar);
3013 // create the graph the regularized cov. matrix
3014 TGraphErrors *gr00reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3015 TString regtitle00("C(y,y)/(A_meas+A_scatt/p^{B})");
3016 regtitle00.Prepend(part);
3017 TH2F *frame00reg = new TH2F("frame00reg",regtitle00.Data(),2,0.1,50,2,0,2);
3018 frame00reg->SetXTitle("p [GeV/c]");
3019 canv00->cd(2); gPad->SetLogx();
3027 // create the canvas
3028 TCanvas *canv11 = new TCanvas("canv11","c11",0,0,700,900);
3029 canv11->Divide(1,2);
3030 // create the graph for cov matrix
3031 TGraphErrors *gr11 = new TGraphErrors(kfitbins,p,mean11,ep,sigma11);
3032 TString title11("C(z,z)"); title11.Prepend(part);
3033 TH2F *frame11 = new TH2F("frame11",title11.Data(),2,0.1,50,2,0,6e-3);
3034 frame11->SetXTitle("p [GeV/c]");
3035 canv11->cd(1); gPad->SetLogx();
3038 // Sets initial values for parameters
3039 func->SetParameters(1.2e-3,8.1e-4,1.);
3040 // Fit points in range defined by function
3041 gr11->Fit("RegFunc","R,Q");
3042 func->GetParameters(fitpar);
3043 for(Int_t i=0; i<3; i++) fitRes(1,i)=fitpar[i];
3044 for(Int_t l=0; l<kfitbins; l++) {
3045 rmean[l] = mean11[l]/RegFunc(&p[l],fitpar);
3046 rsigma[l] = sigma11[l]/RegFunc(&p[l],fitpar);
3048 // create the graph the regularized cov. matrix
3049 TGraphErrors *gr11reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3050 TString regtitle11("C(z,z)/(A_meas+A_scatt/p^{B})");
3051 regtitle11.Prepend(part);
3052 TH2F *frame11reg = new TH2F("frame11reg",regtitle11.Data(),2,0.1,50,2,0,2);
3053 frame11reg->SetXTitle("p [GeV/c]");
3054 canv11->cd(2); gPad->SetLogx();
3062 // create the canvas
3063 TCanvas *canv20 = new TCanvas("canv20","c20",0,0,700,900);
3064 canv20->Divide(1,2);
3065 // create the graph for cov matrix
3066 TGraphErrors *gr20 = new TGraphErrors(kfitbins,p,mean20,ep,sigma20);
3067 TString title20("C(#eta, y)"); title20.Prepend(part);
3068 TH2F *frame20 = new TH2F("frame20",title20.Data(),2,0.1,50,2,0,2.5e-4);
3069 frame20->SetXTitle("p [GeV/c]");
3070 canv20->cd(1); gPad->SetLogx();
3073 // Sets initial values for parameters
3074 func->SetParameters(7.3e-5,1.2e-5,1.5);
3075 // Fit points in range defined by function
3076 gr20->Fit("RegFunc","R,Q");
3077 func->GetParameters(fitpar);
3078 for(Int_t i=0; i<3; i++) fitRes(2,i)=fitpar[i];
3079 for(Int_t l=0; l<kfitbins; l++) {
3080 rmean[l] = mean20[l]/RegFunc(&p[l],fitpar);
3081 rsigma[l] = sigma20[l]/RegFunc(&p[l],fitpar);
3083 // create the graph the regularized cov. matrix
3084 TGraphErrors *gr20reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3085 TString regtitle20("C(#eta, y)/(A_meas+A_scatt/p^{B})");
3086 regtitle20.Prepend(part);
3087 TH2F *frame20reg = new TH2F("frame20reg",regtitle20.Data(),2,0.1,50,2,0,2);
3088 frame20reg->SetXTitle("p [GeV/c]");
3089 canv20->cd(2); gPad->SetLogx();
3097 // create the canvas
3098 TCanvas *canv22 = new TCanvas("canv22","c22",0,0,700,900);
3099 canv22->Divide(1,2);
3100 // create the graph for cov matrix
3101 TGraphErrors *gr22 = new TGraphErrors(kfitbins,p,mean22,ep,sigma22);
3102 TString title22("C(#eta, #eta)"); title22.Prepend(part);
3103 TH2F *frame22 = new TH2F("frame22",title22.Data(),2,0.1,50,2,0,3e-5);
3104 frame22->SetXTitle("p [GeV/c]");
3105 canv22->cd(1); gPad->SetLogx();
3108 // Sets initial values for parameters
3109 func->SetParameters(5.2e-6,1.1e-6,2.);
3110 // Fit points in range defined by function
3111 gr22->Fit("RegFunc","R,Q");
3112 func->GetParameters(fitpar);
3113 for(Int_t i=0; i<3; i++) fitRes(3,i)=fitpar[i];
3114 for(Int_t l=0; l<kfitbins; l++) {
3115 rmean[l] = mean22[l]/RegFunc(&p[l],fitpar);
3116 rsigma[l] = sigma22[l]/RegFunc(&p[l],fitpar);
3118 // create the graph the regularized cov. matrix
3119 TGraphErrors *gr22reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3120 TString regtitle22("C(#eta, #eta)/(A_meas+A_scatt/p^{B})");
3121 regtitle22.Prepend(part);
3122 TH2F *frame22reg = new TH2F("frame22reg",regtitle22.Data(),2,0.1,50,2,0,2);
3123 frame22reg->SetXTitle("p [GeV/c]");
3124 canv22->cd(2); gPad->SetLogx();
3132 // create the canvas
3133 TCanvas *canv31 = new TCanvas("canv31","c31",0,0,700,900);
3134 canv31->Divide(1,2);
3135 // create the graph for cov matrix
3136 TGraphErrors *gr31 = new TGraphErrors(kfitbins,p,mean31,ep,sigma31);
3137 TString title31("C(tg #lambda,z)"); title31.Prepend(part);
3138 TH2F *frame31 = new TH2F("frame31",title31.Data(),2,0.1,50,2,-2e-4,0);
3139 frame31->SetXTitle("p [GeV/c]");
3140 canv31->cd(1); gPad->SetLogx();
3143 // Sets initial values for parameters
3144 func->SetParameters(-1.2e-5,-1.2e-5,1.5);
3145 // Fit points in range defined by function
3146 gr31->Fit("RegFunc","R,Q");
3147 func->GetParameters(fitpar);
3148 for(Int_t i=0; i<3; i++) fitRes(4,i)=fitpar[i];
3149 for(Int_t l=0; l<kfitbins; l++) {
3150 rmean[l] = mean31[l]/RegFunc(&p[l],fitpar);
3151 rsigma[l] = -sigma31[l]/RegFunc(&p[l],fitpar);
3153 // create the graph the regularized cov. matrix
3154 TGraphErrors *gr31reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3155 TString regtitle31("C(tg #lambda,z)/(A_meas+A_scatt/p^{B})");
3156 regtitle31.Prepend(part);
3157 TH2F *frame31reg = new TH2F("frame31reg",regtitle31.Data(),2,0.1,50,2,0,2);
3158 frame31reg->SetXTitle("p [GeV/c]");
3159 canv31->cd(2); gPad->SetLogx();
3167 // create the canvas
3168 TCanvas *canv33 = new TCanvas("canv33","c33",0,0,700,900);
3169 canv33->Divide(1,2);
3170 // create the graph for cov matrix
3171 TGraphErrors *gr33 = new TGraphErrors(kfitbins,p,mean33,ep,sigma33);
3172 TString title33("C(tg #lambda,tg #lambda)"); title33.Prepend(part);
3173 TH2F *frame33 = new TH2F("frame33",title33.Data(),2,0.1,50,2,0,1e-5);
3174 frame33->SetXTitle("p [GeV/c]");
3175 canv33->cd(1); gPad->SetLogx();
3178 // Sets initial values for parameters
3179 func->SetParameters(1.3e-7,4.6e-7,1.7);
3180 // Fit points in range defined by function
3181 gr33->Fit("RegFunc","R,Q");
3182 func->GetParameters(fitpar);
3183 for(Int_t i=0; i<3; i++) fitRes(5,i)=fitpar[i];
3184 for(Int_t l=0; l<kfitbins; l++) {
3185 rmean[l] = mean33[l]/RegFunc(&p[l],fitpar);
3186 rsigma[l] = sigma33[l]/RegFunc(&p[l],fitpar);
3188 // create the graph the regularized cov. matrix
3189 TGraphErrors *gr33reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3190 TString regtitle33("C(tg #lambda,tg #lambda)/(A_meas+A_scatt/p^{B})");
3191 regtitle33.Prepend(part);
3192 TH2F *frame33reg = new TH2F("frame33reg",regtitle33.Data(),2,0.1,50,2,0,2);
3193 frame33reg->SetXTitle("p [GeV/c]");
3194 canv33->cd(2); gPad->SetLogx();
3202 // create the canvas
3203 TCanvas *canv40 = new TCanvas("canv40","c40",0,0,700,900);
3204 canv40->Divide(1,2);
3205 // create the graph for cov matrix
3206 TGraphErrors *gr40 = new TGraphErrors(kfitbins,p,mean40,ep,sigma40);
3207 TString title40("C(C,y)"); title40.Prepend(part);
3208 TH2F *frame40 = new TH2F("frame40",title40.Data(),2,0.1,50,2,0,1e-6);
3209 frame40->SetXTitle("p [GeV/c]");
3210 canv40->cd(1); gPad->SetLogx();
3213 // Sets initial values for parameters
3214 func->SetParameters(4.e-7,4.4e-8,1.5);
3215 // Fit points in range defined by function
3216 gr40->Fit("RegFunc","R,Q");
3217 func->GetParameters(fitpar);
3218 for(Int_t i=0; i<3; i++) fitRes(6,i)=fitpar[i];
3219 for(Int_t l=0; l<kfitbins; l++) {
3220 rmean[l] = mean40[l]/RegFunc(&p[l],fitpar);
3221 rsigma[l] = sigma40[l]/RegFunc(&p[l],fitpar);
3223 // create the graph the regularized cov. matrix
3224 TGraphErrors *gr40reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3225 TString regtitle40("C(C,y)/(A_meas+A_scatt/p^{B})");
3226 regtitle40.Prepend(part);
3227 TH2F *frame40reg = new TH2F("frame40reg",regtitle40.Data(),2,0.1,50,2,0,2);
3228 frame40reg->SetXTitle("p [GeV/c]");
3229 canv40->cd(2); gPad->SetLogx();
3237 // create the canvas
3238 TCanvas *canv42 = new TCanvas("canv42","c42",0,0,700,900);
3239 canv42->Divide(1,2);
3240 // create the graph for cov matrix
3241 TGraphErrors *gr42 = new TGraphErrors(kfitbins,p,mean42,ep,sigma42);
3242 TString title42("C(C, #eta)"); title42.Prepend(part);
3243 TH2F *frame42 = new TH2F("frame42",title42.Data(),2,0.1,50,2,0,2.2e-7);
3244 frame42->SetXTitle("p [GeV/c]");
3245 canv42->cd(1); gPad->SetLogx();
3248 // Sets initial values for parameters
3249 func->SetParameters(3.e-8,8.2e-9,2.);
3250 // Fit points in range defined by function
3251 gr42->Fit("RegFunc","R,Q");
3252 func->GetParameters(fitpar);
3253 for(Int_t i=0; i<3; i++) fitRes(7,i)=fitpar[i];
3254 for(Int_t l=0; l<kfitbins; l++) {
3255 rmean[l] = mean42[l]/RegFunc(&p[l],fitpar);
3256 rsigma[l] = sigma42[l]/RegFunc(&p[l],fitpar);
3258 // create the graph the regularized cov. matrix
3259 TGraphErrors *gr42reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3260 TString regtitle42("C(C, #eta)/(A_meas+A_scatt/p^{B})");
3261 regtitle42.Prepend(part);
3262 TH2F *frame42reg = new TH2F("frame42reg",regtitle42.Data(),2,0.1,50,2,0,2);
3263 frame42reg->SetXTitle("p [GeV/c]");
3264 canv42->cd(2); gPad->SetLogx();
3272 // create the canvas
3273 TCanvas *canv44 = new TCanvas("canv44","c44",0,0,700,900);
3274 canv44->Divide(1,2);
3275 // create the graph for cov matrix
3276 TGraphErrors *gr44 = new TGraphErrors(kfitbins,p,mean44,ep,sigma44);
3277 TString title44("C(C,C)"); title44.Prepend(part);
3278 TH2F *frame44 = new TH2F("frame44",title44.Data(),2,0.1,50,2,0,2e-9);
3279 frame44->SetXTitle("p [GeV/c]");
3280 canv44->cd(1); gPad->SetLogx();
3283 // Sets initial values for parameters
3284 func->SetParameters(1.8e-10,5.8e-11,2.);
3285 // Fit points in range defined by function
3286 gr44->Fit("RegFunc","R,Q");
3287 func->GetParameters(fitpar);
3288 for(Int_t i=0; i<3; i++) fitRes(8,i)=fitpar[i];
3289 for(Int_t l=0; l<kfitbins; l++) {
3290 rmean[l] = mean44[l]/RegFunc(&p[l],fitpar);
3291 rsigma[l] = sigma44[l]/RegFunc(&p[l],fitpar);
3293 // create the graph the regularized cov. matrix
3294 TGraphErrors *gr44reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3295 TString regtitle44("C(C,C)/(A_meas+A_scatt/p^{B})");
3296 regtitle44.Prepend(part);
3297 TH2F *frame44reg = new TH2F("frame44reg",regtitle44.Data(),2,0.1,50,2,0,2);
3298 frame44reg->SetXTitle("p [GeV/c]");
3299 canv44->cd(2); gPad->SetLogx();
3309 new(&fRegParPi) TMatrixD(fitRes);
3312 new(&fRegParKa) TMatrixD(fitRes);
3315 new(&fRegParPr) TMatrixD(fitRes);
3318 new(&fRegParEl) TMatrixD(fitRes);
3321 new(&fRegParMu) TMatrixD(fitRes);
3325 // write fit parameters to file
3326 WriteRegParams(outName,pdg);
3363 //-----------------------------------------------------------------------------
3364 Bool_t AliTPCtrackerParam::SelectedTrack(Double_t pt,Double_t eta) const {
3365 //-----------------------------------------------------------------------------
3366 // This function makes a selection according to TPC tracking efficiency
3367 //-----------------------------------------------------------------------------
3371 eff = fEff->GetValueAt(pt,eta);
3373 if(gRandom->Rndm() < eff) return kTRUE;
3377 //-----------------------------------------------------------------------------
3378 void AliTPCtrackerParam::SetParticle(Int_t pdg) {
3379 //-----------------------------------------------------------------------------
3380 // This function set efficiencies, pulls, etc... for the particle
3381 // specie of the current particle
3382 //-----------------------------------------------------------------------------
3386 fDBgrid = &fDBgridPi;
3389 fRegPar = &fRegParPi;
3390 fdEdxMean = &fdEdxMeanPi;
3391 fdEdxRMS = &fdEdxRMSPi;
3394 fDBgrid = &fDBgridKa;
3397 fRegPar = &fRegParKa;
3398 fdEdxMean = &fdEdxMeanKa;
3399 fdEdxRMS = &fdEdxRMSKa;
3402 fDBgrid = &fDBgridPr;
3405 fRegPar = &fRegParPr;
3406 fdEdxMean = &fdEdxMeanPr;
3407 fdEdxRMS = &fdEdxRMSPr;
3410 fDBgrid = &fDBgridEl;
3413 fRegPar = &fRegParEl;
3414 fdEdxMean = &fdEdxMeanEl;
3415 fdEdxRMS = &fdEdxRMSEl;
3418 fDBgrid = &fDBgridMu;
3421 fRegPar = &fRegParMu;
3422 fdEdxMean = &fdEdxMeanMu;
3423 fdEdxRMS = &fdEdxRMSMu;
3429 //-----------------------------------------------------------------------------
3430 void AliTPCtrackerParam::SmearTrack(Double_t *xx,Double_t *xxsm,TMatrixD cov)
3432 //-----------------------------------------------------------------------------
3433 // This function smears track parameters according to streched cov. matrix
3434 //-----------------------------------------------------------------------------
3435 Double_t xref=xxsm[0]; xxsm[0]=0;
3437 AliGausCorr *corgen = new AliGausCorr(cov,5);
3439 corgen->GetGaussN(corr);
3440 // check on fP2(ESD) = fX*fP4-fP2(TPC)
3441 // with fX=xref (not smeared), fP4=xx[4]+corr[4] e fP2=xx[2]+corr[2];
3442 // if fP2(ESD)^2 > 1 -> resmear...
3443 Double_t fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3444 while ( (fp2esd*fp2esd) > 1.0 ) {
3445 Warning("SmearTrack()","Badly smeared track, retrying...");
3446 corgen->GetGaussN(corr);
3447 fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3453 for(Int_t l=0;l<5;l++) xxsm[l] = xx[l]+corr[l];
3457 //-----------------------------------------------------------------------------
3458 Int_t AliTPCtrackerParam::WritedEdx(const Char_t *outName,Int_t pdg) {
3459 //-----------------------------------------------------------------------------
3460 // This function writes the dEdx parameters to the DB
3461 //-----------------------------------------------------------------------------
3464 const char *dirName="Pions";
3465 const char *meanName="dEdxMeanPi";
3466 const char *rmsName="dEdxRMSPi";
3470 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3471 } else { opt="update"; }
3476 meanName="dEdxMeanPi";
3477 rmsName="dEdxRMSPi";
3481 meanName="dEdxMeanKa";
3482 rmsName="dEdxRMSKa";
3486 meanName="dEdxMeanPr";
3487 rmsName="dEdxRMSPr";
3490 dirName="Electrons";
3491 meanName="dEdxMeanEl";
3492 rmsName="dEdxRMSEl";
3496 meanName="dEdxMeanMu";
3497 rmsName="dEdxRMSMu";
3501 TFile *outFile = new TFile(outName,opt);
3502 if(!gDirectory->cd("/dEdx")) {
3503 outFile->mkdir("dEdx");
3504 gDirectory->cd("/dEdx");
3506 TDirectory *dir2 = gDirectory->mkdir(dirName);
3508 fdEdxMean->SetName(meanName); fdEdxMean->Write();
3509 fdEdxRMS->SetName(rmsName); fdEdxRMS->Write();
3517 //-----------------------------------------------------------------------------
3518 Int_t AliTPCtrackerParam::WriteEffs(const Char_t *outName) {
3519 //-----------------------------------------------------------------------------
3520 // This function writes the TPC efficiencies to the DB
3521 //-----------------------------------------------------------------------------
3526 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3527 } else { opt="update"; }
3529 TFile *outFile = new TFile(outName,opt);
3531 outFile->mkdir("Efficiencies");
3532 gDirectory->cd("/Efficiencies");
3533 gDirectory->mkdir("Pions");
3534 gDirectory->mkdir("Kaons");
3535 gDirectory->mkdir("Protons");
3536 gDirectory->mkdir("Electrons");
3537 gDirectory->mkdir("Muons");
3539 gDirectory->cd("/Efficiencies/Pions");
3540 fEffPi.SetName("EffPi");
3542 gDirectory->cd("/Efficiencies/Kaons");
3543 fEffKa.SetName("EffKa");
3545 gDirectory->cd("/Efficiencies/Protons");
3546 fEffPr.SetName("EffPr");
3548 gDirectory->cd("/Efficiencies/Electrons");
3549 fEffEl.SetName("EffEl");
3551 gDirectory->cd("/Efficiencies/Muons");
3552 fEffMu.SetName("EffMu");
3561 //-----------------------------------------------------------------------------
3562 Int_t AliTPCtrackerParam::WritePulls(const Char_t *outName) {
3563 //-----------------------------------------------------------------------------
3564 // This function writes the pulls to the DB
3565 //-----------------------------------------------------------------------------
3569 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3570 } else { opt="update"; }
3572 TFile *outFile = new TFile(outName,opt);
3574 outFile->mkdir("Pulls");
3575 gDirectory->cd("/Pulls");
3576 gDirectory->mkdir("Pions");
3577 gDirectory->mkdir("Kaons");
3578 gDirectory->mkdir("Protons");
3579 gDirectory->mkdir("Electrons");
3580 gDirectory->mkdir("Muons");
3582 for(Int_t i=0;i<5;i++) {
3583 TString pi("PullsPi_"); pi+=i;
3584 TString ka("PullsKa_"); ka+=i;
3585 TString pr("PullsPr_"); pr+=i;
3586 TString el("PullsEl_"); el+=i;
3587 TString mu("PullsMu_"); mu+=i;
3588 fPullsPi[i].SetName(pi.Data());
3589 fPullsKa[i].SetName(ka.Data());
3590 fPullsPr[i].SetName(pr.Data());
3591 fPullsEl[i].SetName(el.Data());
3592 fPullsMu[i].SetName(mu.Data());
3593 gDirectory->cd("/Pulls/Pions");
3594 fPullsPi[i].Write();
3595 gDirectory->cd("/Pulls/Kaons");
3596 fPullsKa[i].Write();
3597 gDirectory->cd("/Pulls/Protons");
3598 fPullsPr[i].Write();
3599 gDirectory->cd("/Pulls/Electrons");
3600 fPullsEl[i].Write();
3601 gDirectory->cd("/Pulls/Muons");
3602 fPullsMu[i].Write();
3609 //-----------------------------------------------------------------------------
3610 Int_t AliTPCtrackerParam::WriteRegParams(const Char_t *outName,Int_t pdg) {
3611 //-----------------------------------------------------------------------------
3612 // This function writes the regularization parameters to the DB
3613 //-----------------------------------------------------------------------------
3616 const char *dirName="Pions";
3617 const char *keyName="RegPions";
3621 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3622 } else { opt="update"; }
3635 keyName="RegProtons";
3638 dirName="Electrons";
3639 keyName="RegElectrons";
3647 TFile *outFile = new TFile(outName,opt);
3648 if(!gDirectory->cd("/RegParams")) {
3649 outFile->mkdir("RegParams");
3650 gDirectory->cd("/RegParams");
3652 TDirectory *dir2 = gDirectory->mkdir(dirName);
3654 fRegPar->Write(keyName);
3662 //-----------------------------------------------------------------------------
3663 //*****************************************************************************
3664 //-----------------------------------------------------------------------------