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>
79 //------ AliRoot headers ------
80 #include "AliGausCorr.h"
81 #include "AliTracker.h"
85 #include "AliRunLoader.h"
87 #include "AliTPCParamSR.h"
88 #include "AliTPCkineGrid.h"
89 #include "AliTPCtrack.h"
90 #include "AliTPCtrackerParam.h"
91 #include "AliTrackReference.h"
92 //-----------------------------
94 Double_t RegFunc(Double_t *x,Double_t *par) {
95 // This is the function used to regularize the covariance matrix
96 Double_t value = par[0]+par[1]/TMath::Power(x[0],par[2]);
100 // structure for DB building
110 Double_t dP0,dP1,dP2,dP3,dP4;
111 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
114 // cov matrix structure
116 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
119 ClassImp(AliTPCtrackerParam)
121 //-----------------------------------------------------------------------------
122 AliTPCtrackerParam::AliTPCtrackerParam(Int_t kcoll, Double_t kBz,
123 const char* evfoldname):
124 fEvFolderName(evfoldname) {
125 //-----------------------------------------------------------------------------
126 // This is the class conctructor
127 //-----------------------------------------------------------------------------
129 fBz = kBz; // value of the z component of L3 field (Tesla)
130 fColl = kcoll; // collision code (0: PbPb6000; 1: pp)
131 fSelAndSmear = kTRUE; // by default selection and smearing are done
133 if(fBz!=0.4 && fBz!=0.5) {
134 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid field!\n Available: 0.4 or 0.5");
136 if(fColl!=0 && fColl!=1) {
137 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid collision!\n Available: 0 -> PbPb6000\n 1 -> pp");
140 fDBfileName = gSystem->Getenv("ALICE_ROOT");
141 fDBfileName.Append("/TPC/CovMatrixDB_");
142 //fDBfileName = "CovMatrixDB_";
143 if(fColl==0) fDBfileName.Append("PbPb6000");
144 if(fColl==1) fDBfileName.Append("pp");
145 if(fBz==0.4) fDBfileName.Append("_B0.4T.root");
146 // use same DB for 0.4 and 0.5 T; for 0.5 T, correction done in CookTrack()
147 if(fBz==0.5) fDBfileName.Append("_B0.4T.root");
149 //-----------------------------------------------------------------------------
150 AliTPCtrackerParam::~AliTPCtrackerParam() {}
151 //____________________________________________________________________________
152 AliTPCtrackerParam::AliTPCtrackerParam( const AliTPCtrackerParam& p):TObject(p)
154 // dummy copy constructor
156 //----------------------------------------------------------------------------
157 AliTPCtrackerParam::AliTPCseedGeant::AliTPCseedGeant(
158 Double_t x,Double_t y,Double_t z,
159 Double_t px,Double_t py,Double_t pz,
161 //----------------------------------------------------------------------------
162 // Constructor of the geant seeds
163 //----------------------------------------------------------------------------
171 Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
173 fSector = (Int_t)(a/20.);
174 fAlpha = 10.+20.*fSector;
176 fAlpha *= TMath::Pi();
178 //-----------------------------------------------------------------------------
179 Int_t AliTPCtrackerParam::Init() {
180 //-----------------------------------------------------------------------------
181 // This function reads the DB from file
182 //-----------------------------------------------------------------------------
185 printf("+++\n+++ Reading DataBase from:%s\n+++\n+++\n",fDBfileName.Data());
186 // Read paramters from DB file
187 if(!ReadAllData(fDBfileName.Data())) {
188 printf("AliTPCtrackerParam::BuildTPCtracks: \
189 Could not read data from DB\n\n"); return 1;
192 } else printf("\n ! Creating ALL TRUE tracks at TPC inner radius !\n\n");
195 // Check if value in the galice file is equal to selected one (fBz)
196 AliMagF *fiel = (AliMagF*)gAlice->Field();
197 Double_t fieval=TMath::Abs((Double_t)fiel->SolenoidField()/10.);
198 printf("Magnetic field is %6.2f Tesla\n",fieval);
200 printf("AliTPCtrackerParam::BuildTPCtracks: Invalid field!");
201 printf("Field selected is: %f T\n",fBz);
202 printf("Field found on file is: %f T\n",fieval);
206 // Set the conversion constant between curvature and Pt
207 AliTracker::SetFieldMap(fiel,kTRUE);
211 //-----------------------------------------------------------------------------
212 Int_t AliTPCtrackerParam::BuildTPCtracks(AliESD *event) {
213 //-----------------------------------------------------------------------------
214 // This function creates the TPC parameterized tracks and writes them
215 // as AliESDtrack objects in the ESD event
216 //-----------------------------------------------------------------------------
219 if(!event) return -1;
221 AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
223 Error("BuildTPCtracks","Can not get Run Loader from event folder named %s",
224 fEvFolderName.Data());
227 AliLoader* tpcloader = rl->GetLoader("TPCLoader");
228 if (tpcloader == 0x0) {
229 Error("BuildTPCtracks","Can not get TPC Loader from Run Loader.");
233 // Get gAlice object from file
234 if(!gAlice) rl->LoadgAlice();
236 rl->LoadKinematics();
237 tpcloader->LoadHits("read");
239 if(!(gAlice=rl->GetAliRun())) {
240 printf("Cannot get gAlice from Run Loader !\n");
245 AliTPC *tpc=(AliTPC*)gAlice->GetDetector("TPC");
248 AliTPCParam *digp=(AliTPCParam*)gDirectory->Get("75x40_100x60");
251 digp = new AliTPCParamSR();
253 else digp=(AliTPCParam*)gDirectory->Get("75x40_100x60_150x60");
255 if(!digp) { cerr<<"TPC parameters have not been found !\n"; return 1; }
259 AliTPCseedGeant *seed=0;
260 AliTPCtrack *tpctrack=0;
262 Int_t bin,label,pdg,charge;
264 Int_t nParticles,nSeeds,arrentr;
265 //Int_t nSel=0,nAcc=0;
267 Int_t evt=event->GetEventNumber();
271 // array for TPC tracks
272 TObjArray tArray(20000);
274 // array for TPC seeds with geant info
275 TObjArray sArray(20000);
277 // get the particles stack
278 nParticles = (Int_t)gAlice->GetEvent(evt);
280 Bool_t *done = new Bool_t[nParticles];
281 Int_t *pdgCodes = new Int_t[nParticles];
283 // loop on particles and store pdg codes
284 for(Int_t l=0; l<nParticles; l++) {
285 part = (TParticle*)gAlice->GetMCApp()->Particle(l);
286 pdgCodes[l] = part->GetPdgCode();
290 printf("+++ Number of particles: %d\n",nParticles);
292 // Create the seeds for the TPC tracks at the inner radius of TPC
294 // Get TreeH with hits
295 TTree *th = tpcloader->TreeH();
296 MakeSeedsFromHits(tpc,th,sArray);
298 // Get TreeTR with track references
300 TTree *ttr = rl->TreeTR();
302 MakeSeedsFromRefs(ttr,sArray);
305 nSeeds = sArray.GetEntries();
306 printf("+++ Number of seeds: %d\n",nSeeds);
308 // loop over entries in sArray
309 for(Int_t l=0; l<nSeeds; l++) {
310 //if(l%1==0) printf(" --- Processing seed %d of %d ---\n",l,nSeeds);
312 seed = (AliTPCseedGeant*)sArray.At(l);
315 label = seed->GetLabel();
317 // check if this track has already been processed
318 if(done[label]) continue;
320 // PDG code & electric charge
321 pdg = pdgCodes[label];
322 if(pdg>200 || pdg==-11 || pdg==-13) { charge=1; }
323 else if(pdg<-200 || pdg==11 || pdg==13) { charge=-1; }
325 pdg = TMath::Abs(pdg);
326 if(pdg>3000) pdg=211;
328 if(fSelAndSmear) SetParticle(pdg);
331 sEta = seed->GetEta();
333 // Apply selection according to TPC efficiency
334 //if(TMath::Abs(pdg)==211) nAcc++;
335 if(fSelAndSmear && !SelectedTrack(sPt,sEta)) continue;
336 //if(TMath::Abs(pdg)==211) nSel++;
338 // create AliTPCtrack object
339 BuildTrack(seed,charge);
342 bin = fDBgrid->GetBin(sPt,sEta);
345 //fCovTree = &(fCovTreePi[bin]);
346 fCovTree = fCovTreePi[bin];
349 //fCovTree = &(fCovTreeKa[bin]);
350 fCovTree = fCovTreeKa[bin];
353 //fCovTree = &(fCovTreePr[bin]);
354 fCovTree = fCovTreePr[bin];
357 //fCovTree = &(fCovTreeEl[bin]);
358 fCovTree = fCovTreeEl[bin];
361 //fCovTree = &(fCovTreeMu[bin]);
362 fCovTree = fCovTreeMu[bin];
365 // deal with covariance matrix and smearing of parameters
368 // assign the track a dE/dx and make a rough PID
372 // put track in array
373 AliTPCtrack *iotrack = new AliTPCtrack(fTrack);
374 iotrack->SetLabel(label);
375 tArray.AddLast(iotrack);
376 // Mark track as "done" and register the pdg code
380 } // loop over entries in sArray
382 // sort array with TPC tracks (decreasing pT)
385 // convert to AliESDtrack and write to AliESD
386 arrentr = tArray.GetEntriesFast();
389 for(Int_t l=0; l<arrentr; l++) {
390 tpctrack=(AliTPCtrack*)tArray.UncheckedAt(l);
391 AliESDtrack ioESDtrack;
392 ioESDtrack.UpdateTrackParams(tpctrack,AliESDtrack::kTPCin);
394 wgts[0]=0.; wgts[1]=0.; wgts[2]=0.; wgts[3]=0.; wgts[4]=0.;
395 if(TMath::Abs(tpctrack->GetMass()-0.9)<0.1) {
397 } else if(TMath::Abs(tpctrack->GetMass()-0.5)<0.1) {
403 ioESDtrack.SetESDpid(wgts);
404 event->AddTrack(&ioESDtrack);
411 printf("+++ Number of TPC tracks: %d\n",tracks);
412 //cerr<<"Average Eff: "<<(Float_t)nSel/nAcc<<endl;
419 //-----------------------------------------------------------------------------
420 void AliTPCtrackerParam::AnalyzedEdx(const Char_t *outName,Int_t pdg) {
421 //-----------------------------------------------------------------------------
422 // This function computes the dE/dx for pions, kaons, protons and electrons,
423 // in the [pT,eta] bins.
424 // Input file is CovMatrix_AllEvts.root.
425 //-----------------------------------------------------------------------------
427 gStyle->SetOptStat(0);
428 gStyle->SetOptFit(10001);
430 const char *part="PIONS";
434 // create a chain with compared tracks
435 TChain *cmptrkchain = new ("cmptrktree");
436 cmptrkchain.Add("CovMatrix_AllEvts.root");
437 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
438 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
439 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
443 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
444 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
447 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
448 Int_t entries = (Int_t)cmptrktree->GetEntries();
449 cerr<<" Number of entries: "<<entries<<endl;
451 InitializeKineGrid("DB");
452 InitializeKineGrid("dEdx");
479 const Int_t knTotBins = fDBgrid->GetTotBins();
481 cerr<<" Fit bins: "<<knTotBins<<endl;
484 Int_t *n = new Int_t[knTotBins];
485 Double_t *p = new Double_t[knTotBins];
486 Double_t *ep = new Double_t[knTotBins];
487 Double_t *mean = new Double_t[knTotBins];
488 Double_t *sigma = new Double_t[knTotBins];
490 for(Int_t l=0; l<knTotBins; l++) {
491 n[l] = 1; // set to 1 to avoid divisions by 0
492 p[l] = mean[l] = sigma[l] = ep[l] = 0.;
495 // loop on chain entries for the mean
496 for(Int_t l=0; l<entries; l++) {
497 cmptrktree->GetEvent(l);
498 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
499 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
501 mean[bin] += cmptrk.dEdx;
503 } // loop on chain entries
505 for(Int_t l=0; l<knTotBins; l++) {
508 n[l] = 1; // set to 1 to avoid divisions by 0
511 // loop on chain entries for the sigma
512 for(Int_t l=0; l<entries; l++) {
513 cmptrktree->GetEvent(l);
514 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
515 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
516 if(cmptrk.p<1. && TMath::Abs(cmptrk.p-p[bin])>0.025) continue;
518 sigma[bin] += (cmptrk.dEdx-mean[bin])*(cmptrk.dEdx-mean[bin]);
519 } // loop on chain entries
521 for(Int_t l=0; l<knTotBins; l++) {
522 sigma[l] = TMath::Sqrt(sigma[l]/n[l]);
526 TCanvas *canv = new TCanvas("canv","dEdx",0,0,900,700);
528 // create the graph for dEdx vs p
529 TGraphErrors *gr = new TGraphErrors(knTotBins,p,mean,ep,sigma);
530 TString title(" : dE/dx vs momentum"); title.Prepend(part);
531 TH2F *frame = new TH2F("frame1",title.Data(),2,0.1,50,2,0,ymax);
532 frame->SetXTitle("p [GeV/c]");
533 frame->SetYTitle("dE/dx [a.u.]");
540 for(Int_t i=0; i<knTotBins; i++) {
541 fdEdxMeanPi.SetParam(i,mean[i]);
542 fdEdxRMSPi.SetParam(i,sigma[i]);
546 for(Int_t i=0; i<knTotBins; i++) {
547 fdEdxMeanKa.SetParam(i,mean[i]);
548 fdEdxRMSKa.SetParam(i,sigma[i]);
552 for(Int_t i=0; i<knTotBins; i++) {
553 fdEdxMeanPr.SetParam(i,mean[i]);
554 fdEdxRMSPr.SetParam(i,sigma[i]);
558 for(Int_t i=0; i<knTotBins; i++) {
559 fdEdxMeanEl.SetParam(i,mean[i]);
560 fdEdxRMSEl.SetParam(i,sigma[i]);
564 for(Int_t i=0; i<knTotBins; i++) {
565 fdEdxMeanMu.SetParam(i,mean[i]);
566 fdEdxRMSMu.SetParam(i,sigma[i]);
571 // write results to file
572 WritedEdx(outName,pdg);
582 //-----------------------------------------------------------------------------
583 void AliTPCtrackerParam::AnalyzePulls(const Char_t *outName) {
584 //-----------------------------------------------------------------------------
585 // This function computes the pulls for pions, kaons and electrons,
586 // in the [pT,eta] bins.
587 // Input file is CovMatrix_AllEvts.root.
588 // Output file is pulls.root.
589 //-----------------------------------------------------------------------------
592 // create a chain with compared tracks
593 TChain *cmptrkchain = new ("cmptrktree");
594 cmptrkchain.Add("CovMatrix_AllEvts.root");
595 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
596 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
597 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
601 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
602 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
605 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
606 Int_t entries = (Int_t)cmptrktree->GetEntries();
607 cerr<<" Number of entries: "<<entries<<endl;
610 Char_t hname[100], htitle[100];
613 AliTPCkineGrid pulls[5];
614 TH1F *hDum = new TH1F("name","title",100,-7.,7.);
615 TF1 *g = new TF1("g","gaus");
617 InitializeKineGrid("pulls");
618 InitializeKineGrid("DB");
622 // loop on the particles Pi,Ka,Pr,El,Mu
623 for(Int_t part=0; part<5; part++) {
628 cerr<<" Processing pions ...\n";
632 cerr<<" Processing kaons ...\n";
636 cerr<<" Processing protons ...\n";
640 cerr<<" Processing electrons ...\n";
644 cerr<<" Processing muons ...\n";
648 SetParticle(thisPdg);
650 for(Int_t i=0;i<5;i++) {
651 pulls[i].~AliTPCkineGrid();
652 new(&pulls[i]) AliTPCkineGrid(*(fPulls+i));
654 nTotBins = fDBgrid->GetTotBins();
655 cerr<<"nTotBins = "<<nTotBins<<endl;
657 // create histograms for the all the bins
664 hPulls0 = new TH1F[nTotBins];
665 hPulls1 = new TH1F[nTotBins];
666 hPulls2 = new TH1F[nTotBins];
667 hPulls3 = new TH1F[nTotBins];
668 hPulls4 = new TH1F[nTotBins];
671 for(Int_t i=0; i<nTotBins; i++) {
672 sprintf(hname,"hPulls0%d",i);
673 sprintf(htitle,"P0 pulls for bin %d",i);
674 hDum->SetName(hname); hDum->SetTitle(htitle);
676 sprintf(hname,"hPulls1%d",i);
677 sprintf(htitle,"P1 pulls for bin %d",i);
678 hDum->SetName(hname); hDum->SetTitle(htitle);
680 sprintf(hname,"hPulls2%d",i);
681 sprintf(htitle,"P2 pulls for bin %d",i);
682 hDum->SetName(hname); hDum->SetTitle(htitle);
684 sprintf(hname,"hPulls3%d",i);
685 sprintf(htitle,"P3 pulls for bin %d",i);
686 hDum->SetName(hname); hDum->SetTitle(htitle);
688 sprintf(hname,"hPulls4%d",i);
689 sprintf(htitle,"P4 pulls for bin %d",i);
690 hDum->SetName(hname); hDum->SetTitle(htitle);
694 // loop on chain entries
695 for(Int_t i=0; i<entries; i++) {
696 cmptrktree->GetEvent(i);
697 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
698 // fill histograms with the pulls
699 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
700 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
701 hPulls0[bin].Fill(cmptrk.dP0/TMath::Sqrt(cmptrk.c00));
702 hPulls1[bin].Fill(cmptrk.dP1/TMath::Sqrt(cmptrk.c11));
703 hPulls2[bin].Fill(cmptrk.dP2/TMath::Sqrt(cmptrk.c22));
704 hPulls3[bin].Fill(cmptrk.dP3/TMath::Sqrt(cmptrk.c33));
705 hPulls4[bin].Fill(cmptrk.dP4/TMath::Sqrt(cmptrk.c44));
706 } // loop on chain entries
708 // compute the sigma of the distributions
709 for(Int_t i=0; i<nTotBins; i++) {
710 if(hPulls0[i].GetEntries()>10) {
711 g->SetRange(-3.*hPulls0[i].GetRMS(),3.*hPulls0[i].GetRMS());
712 hPulls0[i].Fit("g","R,Q,N");
713 pulls[0].SetParam(i,g->GetParameter(2));
714 } else pulls[0].SetParam(i,-1.);
715 if(hPulls1[i].GetEntries()>10) {
716 g->SetRange(-3.*hPulls1[i].GetRMS(),3.*hPulls1[i].GetRMS());
717 hPulls1[i].Fit("g","R,Q,N");
718 pulls[1].SetParam(i,g->GetParameter(2));
719 } else pulls[1].SetParam(i,-1.);
720 if(hPulls2[i].GetEntries()>10) {
721 g->SetRange(-3.*hPulls2[i].GetRMS(),3.*hPulls2[i].GetRMS());
722 hPulls2[i].Fit("g","R,Q,N");
723 pulls[2].SetParam(i,g->GetParameter(2));
724 } else pulls[2].SetParam(i,-1.);
725 if(hPulls3[i].GetEntries()>10) {
726 g->SetRange(-3.*hPulls3[i].GetRMS(),3.*hPulls3[i].GetRMS());
727 hPulls3[i].Fit("g","R,Q,N");
728 pulls[3].SetParam(i,g->GetParameter(2));
729 } else pulls[3].SetParam(i,-1.);
730 if(hPulls4[i].GetEntries()>10) {
731 g->SetRange(-3.*hPulls4[i].GetRMS(),3.*hPulls4[i].GetRMS());
732 hPulls4[i].Fit("g","R,Q,N");
733 pulls[4].SetParam(i,g->GetParameter(2));
734 } else pulls[4].SetParam(i,-1.);
740 for(Int_t i=0;i<5;i++) {
741 fPullsPi[i].~AliTPCkineGrid();
742 new(&fPullsPi[i]) AliTPCkineGrid(pulls[i]);
746 for(Int_t i=0;i<5;i++) {
747 fPullsKa[i].~AliTPCkineGrid();
748 new(&fPullsKa[i]) AliTPCkineGrid(pulls[i]);
752 for(Int_t i=0;i<5;i++) {
753 fPullsPr[i].~AliTPCkineGrid();
754 new(&fPullsPr[i]) AliTPCkineGrid(pulls[i]);
758 for(Int_t i=0;i<5;i++) {
759 fPullsEl[i].~AliTPCkineGrid();
760 new(&fPullsEl[i]) AliTPCkineGrid(pulls[i]);
764 for(Int_t i=0;i<5;i++) {
765 fPullsMu[i].~AliTPCkineGrid();
766 new(&fPullsMu[i]) AliTPCkineGrid(pulls[i]);
767 //cerr<<" mu pulls "<<i<<" "<<fPullsMu[i].GetParam(0)<<endl;
778 } // loop on particle species
780 // write pulls to file
786 //-----------------------------------------------------------------------------
787 void AliTPCtrackerParam::AnalyzeResolutions(Int_t pdg) {
788 //-----------------------------------------------------------------------------
789 // This function computes the resolutions:
793 // as a function of Pt
794 // Input file is CovMatrix_AllEvts.root.
795 //-----------------------------------------------------------------------------
798 // create a chain with compared tracks
799 TChain *cmptrkchain = new ("cmptrktree");
800 cmptrkchain.Add("CovMatrix_AllEvts.root");
801 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
802 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
803 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
807 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
808 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
811 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
812 Int_t entries = (Int_t)cmptrktree->GetEntries();
813 cerr<<" Number of entries: "<<entries<<endl;
818 InitializeKineGrid("DB");
819 InitializeKineGrid("eff");
823 const Int_t knPtBins = fEff->GetPointsPt();
824 cerr<<"knPtBins = "<<knPtBins<<endl;
825 Double_t *dP0 = new Double_t[knPtBins];
826 Double_t *dP4 = new Double_t[knPtBins];
827 Double_t *dPtToPt = new Double_t[knPtBins];
828 Double_t *pt = new Double_t[knPtBins];
829 fEff->GetArrayPt(pt);
832 TH1F *hDumP0 = new TH1F("nameP0","dy",100,-0.3,0.3);
833 TH1F *hDumP4 = new TH1F("nameP4","dC",100,-0.0005,0.0005);
834 TH1F *hDumPt = new TH1F("namePt","dp_{T}/p_{T}",100,-0.5,0.5);
836 TF1 *g = new TF1("g","gaus");
838 // create histograms for the all the bins
843 hP0 = new TH1F[knPtBins];
844 hP4 = new TH1F[knPtBins];
845 hPt = new TH1F[knPtBins];
847 for(Int_t i=0; i<knPtBins; i++) {
853 // loop on chain entries
854 for(Int_t i=0; i<entries; i++) {
855 cmptrktree->GetEvent(i);
856 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
857 // fill histograms with the residuals
858 bin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
859 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
860 hP0[bin].Fill(cmptrk.dP0);
861 hP4[bin].Fill(cmptrk.dP4);
862 hPt[bin].Fill(cmptrk.dpt/cmptrk.pt);
863 } // loop on chain entries
866 TCanvas *cP0res = new TCanvas("cP0res","cP0res",0,0,1200,700);
868 TCanvas *cP4res = new TCanvas("cP4res","cP4res",0,0,1200,700);
870 TCanvas *cPtres = new TCanvas("cPtres","cPtres",0,0,1200,700);
874 for(Int_t i=0; i<knPtBins; i++) {
875 cP0res->cd(i+1); hP0[i].Draw();
876 cP4res->cd(i+1); hP4[i].Draw();
877 cPtres->cd(i+1); hPt[i].Draw();
881 // compute the sigma of the distributions
882 for(Int_t i=0; i<knPtBins; i++) {
883 if(hP0[i].GetEntries()>10) {
884 g->SetRange(-3.*hP0[i].GetRMS(),3.*hP0[i].GetRMS());
885 hP0[i].Fit("g","R,Q,N");
886 dP0[i] = g->GetParameter(2);
888 if(hP4[i].GetEntries()>10) {
889 g->SetRange(-3.*hP4[i].GetRMS(),3.*hP4[i].GetRMS());
890 hP4[i].Fit("g","R,Q,N");
891 dP4[i] = g->GetParameter(2);
893 if(hPt[i].GetEntries()>10) {
894 g->SetRange(-3.*hPt[i].GetRMS(),3.*hPt[i].GetRMS());
895 hPt[i].Fit("g","R,Q,N");
896 dPtToPt[i] = 100.*g->GetParameter(2);
897 } else dPtToPt[i] = 0.;
901 TGraph *grdP0 = new TGraph(knPtBins,pt,dP0);
902 TGraph *grdP4 = new TGraph(knPtBins,pt,dP4);
903 TGraph *grdPtToPt = new TGraph(knPtBins,pt,dPtToPt);
905 grdP0->SetMarkerStyle(20); grdP0->SetMarkerColor(2); grdP0->SetMarkerSize(1.5);
906 grdP4->SetMarkerStyle(21); grdP4->SetMarkerColor(3); grdP4->SetMarkerSize(1.5);
907 grdPtToPt->SetMarkerStyle(22); grdPtToPt->SetMarkerColor(4); grdPtToPt->SetMarkerSize(1.5);
910 gStyle->SetOptStat(0);
911 TCanvas *c1 = new TCanvas("c1","dP0",0,0,900,700);
916 TH2F *frame1 = new TH2F("frame1","y resolution VS p_{T} in TPC",2,0.1,30,2,0,0.1);
917 frame1->SetXTitle("p_{T} [GeV/c]");
918 frame1->SetYTitle("#sigma(y) [cm]");
923 TCanvas *c2 = new TCanvas("c2","dP4",0,0,900,700);
928 TH2F *frame2 = new TH2F("frame2","C resolution VS p_{T} in TPC",2,0.1,30,2,0,0.0001);
929 frame2->SetXTitle("p_{T} [GeV/c]");
930 frame2->SetYTitle("#sigma(C) [1/cm]");
934 TCanvas *c3 = new TCanvas("c3","dPtToPt",0,0,900,700);
940 TH2F *frame3 = new TH2F("frame3","Relative p_{T} resolution VS p_{T} in TPC",2,0.1,30,2,0.1,30.);
941 frame3->SetXTitle("p_{T} [GeV/c]");
942 frame3->SetYTitle("dp_{T}/p_{T} (%)");
944 grdPtToPt->Draw("P");
959 //-----------------------------------------------------------------------------
960 void AliTPCtrackerParam::BuildTrack(AliTPCseedGeant *s,Int_t ch) {
961 //-----------------------------------------------------------------------------
962 // This function uses GEANT info to set true track parameters
963 //-----------------------------------------------------------------------------
964 Double_t xref = s->GetXL();
965 Double_t xx[5],cc[15];
966 cc[0]=cc[2]=cc[5]=cc[9]=cc[14]=10.;
967 cc[1]=cc[3]=cc[4]=cc[6]=cc[7]=cc[8]=cc[10]=cc[11]=cc[12]=cc[13]=0.;
970 TVector3 bfield(0.,0.,-fBz);
973 // radius [cm] of track projection in (x,y)
974 Double_t rho = s->GetPt()*100./0.299792458/TMath::Abs(bfield.Z());
975 // center of track projection in local reference frame
979 // position (local) and momentum (local) at the seed
980 // in the bending plane (z=0)
981 sPos.SetXYZ(s->GetXL(),s->GetYL(),0.);
982 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.);
983 TVector3 vrho = sMom.Cross(bfield);
987 TVector3 vcenter = sPos+vrho;
989 Double_t x0 = vcenter.X();
991 // fX = xref X-coordinate of this track (reference plane)
992 // fAlpha = Alpha Rotation angle the local (TPC sector)
993 // fP0 = YL Y-coordinate of a track
994 // fP1 = ZG Z-coordinate of a track
995 // fP2 = C*x0 x0 is center x in rotated frame
996 // fP3 = Tgl tangent of the track momentum dip angle
997 // fP4 = C track curvature
1000 xx[3] = s->GetPz()/s->GetPt();
1004 // create the object AliTPCtrack
1005 AliTPCtrack track(0,xx,cc,xref,s->GetAlpha());
1006 new(&fTrack) AliTPCtrack(track);
1010 //-----------------------------------------------------------------------------
1011 void AliTPCtrackerParam::CompareTPCtracks(
1013 const Char_t* galiceName,
1014 const Char_t* trkGeaName,
1015 const Char_t* trkKalName,
1016 const Char_t* covmatName,
1017 const Char_t* tpceffasciiName,
1018 const Char_t* tpceffrootName) {
1019 //-----------------------------------------------------------------------------
1020 // This function compares tracks from TPC Kalman Filter V2 with
1021 // geant tracks at TPC 1st hit. It gives:
1022 // - a tree with Kalman cov. matrix elements, resolutions, dEdx
1023 // - the efficiencies as a function of particle type, pT, eta
1024 //-----------------------------------------------------------------------------
1026 TFile *kalFile = TFile::Open(trkKalName);
1027 TFile *geaFile = TFile::Open(trkGeaName);
1028 TFile *galiceFile = TFile::Open(galiceName);
1030 // get the AliRun object
1031 AliRun *gAlice = (AliRun*)galiceFile->Get("gAlice");
1034 // create the tree for comparison results
1036 TTree *cmptrktree = new TTree("cmptrktree","results of track comparison");
1037 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");
1039 InitializeKineGrid("eff");
1040 InitializeKineGrid("DB");
1041 Int_t effBins = fEffPi.GetTotPoints();
1042 Int_t effBinsPt = fEffPi.GetPointsPt();
1043 Double_t *pt = new Double_t[effBinsPt];
1044 fEffPi.GetArrayPt(pt);
1050 Double_t cc[15],dAlpha;
1051 Int_t pi=0,ka=0,mu=0,el=0,pr=0;
1052 Int_t *geaPi = new Int_t[effBins];
1053 Int_t *geaKa = new Int_t[effBins];
1054 Int_t *geaPr = new Int_t[effBins];
1055 Int_t *geaEl = new Int_t[effBins];
1056 Int_t *geaMu = new Int_t[effBins];
1057 Int_t *kalPi = new Int_t[effBins];
1058 Int_t *kalKa = new Int_t[effBins];
1059 Int_t *kalPr = new Int_t[effBins];
1060 Int_t *kalEl = new Int_t[effBins];
1061 Int_t *kalMu = new Int_t[effBins];
1062 Float_t *effPi = new Float_t[effBins];
1063 Float_t *effKa = new Float_t[effBins];
1064 Float_t *effPr = new Float_t[effBins];
1065 Float_t *effEl = new Float_t[effBins];
1066 Float_t *effMu = new Float_t[effBins];
1068 for(Int_t j=0; j<effBins; j++) {
1069 geaPi[j]=geaKa[j]=geaPr[j]=geaEl[j]=geaMu[j]=0;
1070 kalPi[j]=kalKa[j]=kalPr[j]=kalEl[j]=kalMu[j]=0;
1071 effPi[j]=effKa[j]=effPr[j]=effEl[j]=effMu[j]=-1.;
1076 // loop on events in file
1077 for(Int_t evt=0; evt<nEvents; evt++) {
1078 cerr<<"\n --- Reading tracks for event "<<evt<<" ---\n\n";
1079 sprintf(tname,"TreeT_TPC_%d",evt);
1081 // particles from TreeK
1082 const Int_t knparticles = gAlice->GetEvent(evt);
1084 Int_t *kalLab = new Int_t[knparticles];
1085 for(Int_t i=0; i<knparticles; i++) kalLab[i] = -1;
1088 // tracks from Kalman
1089 TTree *kaltree=(TTree*)kalFile->Get(tname);
1090 if(!kaltree) continue;
1091 AliTPCtrack *kaltrack=new AliTPCtrack;
1092 kaltree->SetBranchAddress("tracks",&kaltrack);
1093 Int_t kalEntries = (Int_t)kaltree->GetEntries();
1095 // tracks from 1st hit
1096 TTree *geatree=(TTree*)geaFile->Get(tname);
1097 if(!geatree) continue;
1098 AliTPCtrack *geatrack=new AliTPCtrack;
1099 geatree->SetBranchAddress("tracks",&geatrack);
1100 Int_t geaEntries = (Int_t)geatree->GetEntries();
1102 cerr<<"+++\n+++ Number of tracks: TPC Kalman = "<<kalEntries<<endl<<"+++ TPC 1st hit = "<<geaEntries<<endl<<"+++\n";
1104 // set pointers for TPC tracks:
1105 // the entry number of the track labelled l is stored in kalLab[l]
1106 Int_t fake=0,mult=0;
1107 for (Int_t j=0; j<kalEntries; j++) {
1108 kaltree->GetEvent(j);
1109 if(kaltrack->GetLabel()>=0) {
1110 if(kalLab[kaltrack->GetLabel()]!=-1) mult++;
1111 kalLab[kaltrack->GetLabel()] = j;
1116 cerr<<"+++ Number of fake tracks in TPC Kalman: "<<fake<<endl;
1117 cerr<<"+++ Number of multiply found tracks in TPC Kalman: "<<mult<<endl;
1120 // Read the labels of the seeds
1123 Bool_t *hasSeed = new Bool_t[knparticles];
1124 for(Int_t i=0; i<knparticles; i++) hasSeed[i] = kFALSE;
1125 sprintf(sname,"seedLabels.%d.dat",evt);
1126 FILE *seedFile = fopen(sname,"r");
1128 ncol = fscanf(seedFile,"%d",&sLabel);
1130 if(sLabel>0) hasSeed[sLabel]=kTRUE;
1135 cerr<<"Doing track comparison...\n";
1136 // loop on tracks at 1st hit
1137 for(Int_t j=0; j<geaEntries; j++) {
1138 geatree->GetEvent(j);
1140 label = geatrack->GetLabel();
1141 part = (TParticle*)gAlice->GetMCApp()->Particle(label);
1143 // use only injected tracks with fixed values of pT
1144 ptgener = part->Pt();
1146 for(Int_t l=0; l<fEffPi.GetPointsPt(); l++) {
1147 if(TMath::Abs(ptgener-pt[l])<0.01) usethis = kTRUE;
1149 if(!usethis) continue;
1151 // check if it has the seed
1152 //if(!hasSeed[label]) continue;
1155 // check if track is entirely contained in a TPC sector
1156 Bool_t out = kFALSE;
1157 for(Int_t l=0; l<10; l++) {
1158 Double_t x = 85. + (250.-85.)*(Double_t)l/9.;
1159 //cerr<<"x "<<x<<" X "<<geatrack->GetX()<<endl;
1160 Double_t y = geatrack->GetY() + (
1161 TMath::Sqrt(1-(geatrack->GetC()*geatrack->GetX()-geatrack->GetEta())*
1162 (geatrack->GetC()*geatrack->GetX()-geatrack->GetEta()))
1163 -TMath::Sqrt(1-(geatrack->GetC()*x-geatrack->GetEta())*
1164 (geatrack->GetC()*x-geatrack->GetEta()))
1167 //cerr<<"y "<<y<<" Y "<<geatrack->GetY()<<endl;
1168 if(y > 0.8*x*TMath::Tan(TMath::Pi()/18)) { out = kTRUE; break; }
1173 cmptrk.pdg = part->GetPdgCode();
1174 cmptrk.eta = part->Eta();
1175 cmptrk.r = TMath::Sqrt(part->Vx()*part->Vx()+part->Vy()*part->Vy());
1177 cmptrk.pt = 1/TMath::Abs(geatrack->Get1Pt());
1178 cmptrk.cosl = TMath::Cos(TMath::ATan(geatrack->GetTgl()));
1179 cmptrk.p = cmptrk.pt/cmptrk.cosl;
1182 bin = fDBgridPi.GetBin(cmptrk.pt,cmptrk.eta);
1184 if(abs(cmptrk.pdg)==211) geaPi[bin]++;
1185 if(abs(cmptrk.pdg)==321) geaKa[bin]++;
1186 if(abs(cmptrk.pdg)==2212) geaPr[bin]++;
1187 if(abs(cmptrk.pdg)==11) geaEl[bin]++;
1188 if(abs(cmptrk.pdg)==13) geaMu[bin]++;
1191 // check if there is the corresponding track in the TPC kalman and get it
1192 if(kalLab[label]==-1) continue;
1193 kaltree->GetEvent(kalLab[label]);
1195 // and go on only if it has xref = 84.57 cm (inner pad row)
1196 if(kaltrack->GetX()>90.) continue;
1198 if(abs(cmptrk.pdg)==211) { kalPi[bin]++; pi++; }
1199 if(abs(cmptrk.pdg)==321) { kalKa[bin]++; ka++; }
1200 if(abs(cmptrk.pdg)==2212) { kalPr[bin]++; pr++; }
1201 if(abs(cmptrk.pdg)==11) { kalEl[bin]++; el++; }
1202 if(abs(cmptrk.pdg)==13) { kalMu[bin]++; mu++; }
1204 kaltrack->PropagateTo(geatrack->GetX(),1.e-9,0.);
1206 cmptrk.dEdx = kaltrack->GetdEdx();
1208 // compute errors on parameters
1209 dAlpha = kaltrack->GetAlpha()-geatrack->GetAlpha();
1210 if(TMath::Abs(dAlpha)>0.1) { cerr<<" ! WRONG SECTOR !\n"; continue; }
1212 cmptrk.dP0 = kaltrack->GetY()-geatrack->GetY();
1213 cmptrk.dP1 = kaltrack->GetZ()-geatrack->GetZ();
1214 cmptrk.dP2 = kaltrack->GetEta()-geatrack->GetEta();
1215 cmptrk.dP3 = kaltrack->GetTgl()-geatrack->GetTgl();
1216 cmptrk.dP4 = kaltrack->GetC()-geatrack->GetC();
1217 cmptrk.dpt = 1/kaltrack->Get1Pt()-1/geatrack->Get1Pt();
1219 // get covariance matrix
1220 // beware: lines 3 and 4 in the matrix are inverted!
1221 kaltrack->GetCovariance(cc);
1229 cmptrk.c30 = cc[10];
1230 cmptrk.c31 = cc[11];
1231 cmptrk.c32 = cc[12];
1232 cmptrk.c33 = cc[14];
1236 cmptrk.c43 = cc[13];
1242 } // loop on tracks at TPC 1st hit
1245 //delete [] hasSeed;
1247 } // end loop on events in file
1250 cerr<<"+++\n+++ Number of compared tracks: "<<pi+ka+el+mu+pr<<endl;
1251 cerr<<"+++ Pions: "<<pi<<", Kaons: "<<ka<<", Protons : "<<pr<<", Electrons: "<<el<<", Muons: "<<mu<<endl;
1254 // Write tree to file
1255 TFile *outfile = new TFile(covmatName,"recreate");
1256 cmptrktree->Write();
1260 // Write efficiencies to ascii file
1261 FILE *effFile = fopen(tpceffasciiName,"w");
1262 //fprintf(effFile,"%d\n",kalEntries);
1263 for(Int_t j=0; j<effBins; j++) {
1264 if(geaPi[j]>=100) effPi[j]=(Float_t)kalPi[j]/geaPi[j];
1265 if(geaKa[j]>=100) effKa[j]=(Float_t)kalKa[j]/geaKa[j];
1266 if(geaPr[j]>=100) effPr[j]=(Float_t)kalPr[j]/geaPr[j];
1267 if(geaEl[j]>=500) effEl[j]=(Float_t)kalEl[j]/geaEl[j];
1268 if(geaMu[j]>=100) effMu[j]=(Float_t)kalMu[j]/geaMu[j];
1269 fprintf(effFile,"%f %f %f %f %f\n",effPi[j],effKa[j],effPr[j],effEl[j],effMu[j]);
1272 for(Int_t j=0; j<effBins; j++) {
1273 fprintf(effFile,"%d %d %d %d %d\n",geaPi[j],geaKa[j],geaPr[j],geaEl[j],geaMu[j]);
1275 for(Int_t j=0; j<effBins; j++) {
1276 fprintf(effFile,"%d %d %d %d %d\n",kalPi[j],kalKa[j],kalPr[j],kalEl[j],kalMu[j]);
1280 // Write efficiencies to root file
1281 for(Int_t j=0; j<effBins; j++) {
1282 fEffPi.SetParam(j,(Double_t)effPi[j]);
1283 fEffKa.SetParam(j,(Double_t)effKa[j]);
1284 fEffPr.SetParam(j,(Double_t)effPr[j]);
1285 fEffEl.SetParam(j,(Double_t)effEl[j]);
1286 fEffMu.SetParam(j,(Double_t)effMu[j]);
1288 WriteEffs(tpceffrootName);
1290 // delete AliRun object
1291 delete gAlice; gAlice=0;
1293 // close all input files
1296 galiceFile->Close();
1317 //-----------------------------------------------------------------------------
1318 void AliTPCtrackerParam::CookdEdx(Double_t pt,Double_t eta) {
1319 //-----------------------------------------------------------------------------
1320 // This function assigns the track a dE/dx and makes a rough PID
1321 //-----------------------------------------------------------------------------
1323 Double_t mean = fdEdxMean->GetValueAt(pt,eta);
1324 Double_t rms = fdEdxRMS->GetValueAt(pt,eta);
1326 Double_t dEdx = gRandom->Gaus(mean,rms);
1328 fTrack.SetdEdx(dEdx);
1330 AliTPCtrackParam t(fTrack);
1333 Double_t p = TMath::Sqrt(1.+t.GetTgl()*t.GetTgl())*pt;
1335 Double_t massPi = (Double_t)TDatabasePDG::Instance()->GetParticle(211)->Mass();
1336 Double_t massKa = (Double_t)TDatabasePDG::Instance()->GetParticle(321)->Mass();
1337 Double_t massPr = (Double_t)TDatabasePDG::Instance()->GetParticle(2212)->Mass();
1340 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1341 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1343 if (dEdx < 39.+ 12./p/p) {
1344 t.AssignMass(massKa); new(&fTrack) AliTPCtrack(t); return;
1346 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1350 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1351 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1353 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1356 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1358 //-----------------------------------------------------------------------------
1359 void AliTPCtrackerParam::CookTrack(Double_t pt,Double_t eta) {
1360 //-----------------------------------------------------------------------------
1361 // This function deals with covariance matrix and smearing
1362 //-----------------------------------------------------------------------------
1366 Double_t trkKine[1],trkRegPar[3];
1367 Double_t xref,alpha,xx[5],xxsm[5],cc[15];
1370 fCovTree->SetBranchAddress("matrix",&covmat);
1372 // get random entry from the tree
1373 treeEntries = (Int_t)fCovTree->GetEntries();
1374 fCovTree->GetEvent(gRandom->Integer(treeEntries));
1376 // get P and Cosl from track
1377 cosl = TMath::Cos(TMath::ATan(fTrack.GetTgl()));
1378 p = 1./TMath::Abs(fTrack.Get1Pt())/cosl;
1382 // get covariance matrix from regularized matrix
1383 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(0,l);
1384 cc[0] = covmat.c00*RegFunc(trkKine,trkRegPar);
1386 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(1,l);
1387 cc[2] = covmat.c11*RegFunc(trkKine,trkRegPar);
1388 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(2,l);
1389 cc[3] = covmat.c20*RegFunc(trkKine,trkRegPar);
1391 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(3,l);
1392 cc[5] = covmat.c22*RegFunc(trkKine,trkRegPar);
1394 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(4,l);
1395 cc[7] = covmat.c31*RegFunc(trkKine,trkRegPar);
1397 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(5,l);
1398 cc[9] = covmat.c33*RegFunc(trkKine,trkRegPar);
1399 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(6,l);
1400 cc[10]= covmat.c40*RegFunc(trkKine,trkRegPar);
1402 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(7,l);
1403 cc[12]= covmat.c42*RegFunc(trkKine,trkRegPar);
1405 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(8,l);
1406 cc[14]= covmat.c44*RegFunc(trkKine,trkRegPar);
1409 TMatrixD covMatSmear(5,5);
1410 covMatSmear = GetSmearingMatrix(cc,pt,eta);
1412 // get track original parameters
1413 xref =fTrack.GetX();
1414 alpha=fTrack.GetAlpha();
1415 xx[0]=fTrack.GetY();
1416 xx[1]=fTrack.GetZ();
1417 xx[2]=fTrack.GetX()*fTrack.GetC()-fTrack.GetSnp();
1418 xx[3]=fTrack.GetTgl();
1419 xx[4]=fTrack.GetC();
1421 // use smearing matrix to smear the original parameters
1423 SmearTrack(xx,xxsm,covMatSmear);
1425 AliTPCtrack track(0,xxsm,cc,xref,alpha);
1426 new(&fTrack) AliTPCtrack(track);
1430 //-----------------------------------------------------------------------------
1431 void AliTPCtrackerParam::DrawEffs(const Char_t* inName,Int_t pdg) {
1432 //-----------------------------------------------------------------------------
1433 // This function draws the TPC efficiencies in the [pT,eta] bins
1434 //-----------------------------------------------------------------------------
1439 const Int_t kn = fEff->GetPointsPt();
1440 Double_t *effsA = new Double_t[kn];
1441 Double_t *effsB = new Double_t[kn];
1442 Double_t *effsC = new Double_t[kn];
1443 Double_t *pt = new Double_t[kn];
1445 fEff->GetArrayPt(pt);
1446 for(Int_t i=0;i<kn;i++) {
1447 effsA[i] = fEff->GetParam(i,0);
1448 effsB[i] = fEff->GetParam(i,1);
1449 effsC[i] = fEff->GetParam(i,2);
1452 TGraph *grA = new TGraph(kn,pt,effsA);
1453 TGraph *grB = new TGraph(kn,pt,effsB);
1454 TGraph *grC = new TGraph(kn,pt,effsC);
1456 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1457 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1458 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1460 TString title("Distribution of the TPC efficiencies");
1463 title.Prepend("PIONS - ");
1466 title.Prepend("KAONS - ");
1469 title.Prepend("PROTONS - ");
1472 title.Prepend("ELECTRONS - ");
1475 title.Prepend("MUONS - ");
1480 gStyle->SetOptStat(0);
1481 TCanvas *c = new TCanvas("c","effs",0,0,900,700);
1486 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,1);
1487 frame->SetXTitle("p_{T} [GeV/c]");
1493 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1494 leg->AddEntry(grA,"|#eta|<0.3","p");
1495 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1496 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1497 leg->SetFillColor(0);
1507 //-----------------------------------------------------------------------------
1508 void AliTPCtrackerParam::DrawPulls(const Char_t* inName,Int_t pdg,
1510 //-----------------------------------------------------------------------------
1511 // This function draws the pulls in the [pT,eta] bins
1512 //-----------------------------------------------------------------------------
1517 const Int_t kn = (fPulls+par)->GetPointsPt();
1518 Double_t *pullsA = new Double_t[kn];
1519 Double_t *pullsB = new Double_t[kn];
1520 Double_t *pullsC = new Double_t[kn];
1521 Double_t *pt = new Double_t[kn];
1522 (fPulls+par)->GetArrayPt(pt);
1523 for(Int_t i=0;i<kn;i++) {
1524 pullsA[i] = (fPulls+par)->GetParam(i,0);
1525 pullsB[i] = (fPulls+par)->GetParam(i,1);
1526 pullsC[i] = (fPulls+par)->GetParam(i,2);
1529 TGraph *grA = new TGraph(kn,pt,pullsA);
1530 TGraph *grB = new TGraph(kn,pt,pullsB);
1531 TGraph *grC = new TGraph(kn,pt,pullsC);
1533 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1534 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1535 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1537 TString title("Distribution of the pulls: ");
1540 title.Prepend("PIONS - ");
1543 title.Prepend("KAONS - ");
1546 title.Prepend("PROTONS - ");
1549 title.Prepend("ELECTRONS - ");
1552 title.Prepend("MUONS - ");
1563 title.Append(" #eta");
1566 title.Append("tg #lambda");
1573 gStyle->SetOptStat(0);
1574 TCanvas *c = new TCanvas("c","pulls",0,0,900,700);
1579 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,2);
1580 frame->SetXTitle("p_{T} [GeV/c]");
1586 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1587 leg->AddEntry(grA,"|#eta|<0.3","p");
1588 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1589 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1590 leg->SetFillColor(0);
1600 //-----------------------------------------------------------------------------
1601 TMatrixD AliTPCtrackerParam::GetSmearingMatrix(Double_t* cc,Double_t pt,
1602 Double_t eta) const {
1603 //-----------------------------------------------------------------------------
1604 // This function stretches the covariance matrix according to the pulls
1605 //-----------------------------------------------------------------------------
1607 TMatrixD covMat(5,5);
1610 covMat(1,0)=cc[1]; covMat(0,1)=covMat(1,0);
1612 covMat(2,0)=cc[3]; covMat(0,2)=covMat(2,0);
1613 covMat(2,1)=cc[4]; covMat(1,2)=covMat(2,1);
1615 covMat(3,0)=cc[6]; covMat(0,3)=covMat(3,0);
1616 covMat(3,1)=cc[7]; covMat(1,3)=covMat(3,1);
1617 covMat(3,2)=cc[8]; covMat(2,3)=covMat(3,2);
1619 covMat(4,0)=cc[10]; covMat(0,4)=covMat(4,0);
1620 covMat(4,1)=cc[11]; covMat(1,4)=covMat(4,1);
1621 covMat(4,2)=cc[12]; covMat(2,4)=covMat(4,2);
1622 covMat(4,3)=cc[13]; covMat(3,4)=covMat(4,3);
1626 TMatrixD stretchMat(5,5);
1627 for(Int_t k=0;k<5;k++) {
1628 for(Int_t l=0;l<5;l++) {
1633 for(Int_t i=0;i<5;i++) {
1634 stretchMat(i,i) = (fPulls+i)->GetValueAt(pt,eta);
1635 if(stretchMat(i,i)==0.) stretchMat(i,i) = 1.;
1638 TMatrixD mat(stretchMat,TMatrixD::kMult,covMat);
1639 TMatrixD covMatSmear(mat,TMatrixD::kMult,stretchMat);
1643 //-----------------------------------------------------------------------------
1644 void AliTPCtrackerParam::InitializeKineGrid(Option_t* which) {
1645 //-----------------------------------------------------------------------------
1646 // This function initializes ([pt,eta] points) the data members AliTPCkineGrid
1647 // which = "DB" -> initialize fDBgrid... members
1648 // "eff" -> initialize fEff... members
1649 // "pulls" -> initialize fPulls... members
1650 // "dEdx" -> initialize fdEdx... members
1651 //-----------------------------------------------------------------------------
1653 const char *db = strstr(which,"DB");
1654 const char *eff = strstr(which,"eff");
1655 const char *pulls = strstr(which,"pulls");
1656 const char *dEdx = strstr(which,"dEdx");
1659 Int_t nEta=0, nPt=0;
1661 Double_t etaPoints[2] = {0.3,0.6};
1662 Double_t etaBins[3] = {0.15,0.45,0.75};
1664 Double_t ptPoints[9] = {0.4,0.6,0.8,1.2,1.7,3.,5.,8.,15.};
1665 Double_t ptBins[10] = {0.3,0.5,0.7,1.,1.5,2.,4.,6.,10.,20.};
1668 Double_t *eta=0,*pt=0;
1682 AliTPCkineGrid *dummy=0;
1685 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1686 new(&fDBgridPi) AliTPCkineGrid(*dummy);
1687 new(&fDBgridKa) AliTPCkineGrid(*dummy);
1688 new(&fDBgridPr) AliTPCkineGrid(*dummy);
1689 new(&fDBgridEl) AliTPCkineGrid(*dummy);
1690 new(&fDBgridMu) AliTPCkineGrid(*dummy);
1694 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1695 new(&fEffPi) AliTPCkineGrid(*dummy);
1696 new(&fEffKa) AliTPCkineGrid(*dummy);
1697 new(&fEffPr) AliTPCkineGrid(*dummy);
1698 new(&fEffEl) AliTPCkineGrid(*dummy);
1699 new(&fEffMu) AliTPCkineGrid(*dummy);
1703 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1704 for(Int_t i=0;i<5;i++) new(&fPullsPi[i]) AliTPCkineGrid(*dummy);
1705 for(Int_t i=0;i<5;i++) new(&fPullsKa[i]) AliTPCkineGrid(*dummy);
1706 for(Int_t i=0;i<5;i++) new(&fPullsPr[i]) AliTPCkineGrid(*dummy);
1707 for(Int_t i=0;i<5;i++) new(&fPullsEl[i]) AliTPCkineGrid(*dummy);
1708 for(Int_t i=0;i<5;i++) new(&fPullsMu[i]) AliTPCkineGrid(*dummy);
1712 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1713 new(&fdEdxMeanPi) AliTPCkineGrid(*dummy);
1714 new(&fdEdxRMSPi) AliTPCkineGrid(*dummy);
1715 new(&fdEdxMeanKa) AliTPCkineGrid(*dummy);
1716 new(&fdEdxRMSKa) AliTPCkineGrid(*dummy);
1717 new(&fdEdxMeanPr) AliTPCkineGrid(*dummy);
1718 new(&fdEdxRMSPr) AliTPCkineGrid(*dummy);
1719 new(&fdEdxMeanEl) AliTPCkineGrid(*dummy);
1720 new(&fdEdxRMSEl) AliTPCkineGrid(*dummy);
1721 new(&fdEdxMeanMu) AliTPCkineGrid(*dummy);
1722 new(&fdEdxRMSMu) AliTPCkineGrid(*dummy);
1728 //-----------------------------------------------------------------------------
1729 void AliTPCtrackerParam::MakeDataBase() {
1730 //-----------------------------------------------------------------------------
1731 // This function creates the DB file and store in it:
1732 // - TPC Efficiencies for pi,ka,pr,el,mu (AliTPCkineGrid class)
1733 // - Pulls for pi,ka,el (AliTPCkineGrid class)
1734 // - Regularization parameters for pi,ka,el (TMatrixD class)
1735 // - dE/dx parameterization for pi,ka,pr,el (AliTPCkineGrid class)
1736 // - Regularized cov. matrices for pi,ka,el (COVMATRIX structure)
1737 //-----------------------------------------------------------------------------
1739 // define some file names
1740 const char *effFile ="TPCeff.root";
1741 const char *pullsFile ="pulls.root";
1742 const char *regPiFile ="regPi.root";
1743 const char *regKaFile ="regKa.root";
1744 const char *regPrFile ="regPr.root";
1745 const char *regElFile ="regEl.root";
1746 const char *regMuFile ="regMu.root";
1747 const char *dEdxPiFile="dEdxPi.root";
1748 const char *dEdxKaFile="dEdxKa.root";
1749 const char *dEdxPrFile="dEdxPr.root";
1750 const char *dEdxElFile="dEdxEl.root";
1751 const char *dEdxMuFile="dEdxMu.root";
1752 const char *cmFile ="CovMatrix_AllEvts.root";
1754 Char_t *cmFile1 ="CovMatrix_AllEvts_1.root";
1755 Char_t *cmFile2 ="CovMatrix_AllEvts_2.root";
1756 Char_t *cmFile3 ="CovMatrix_AllEvts_3.root";
1759 // store the effieciencies
1761 WriteEffs(fDBfileName.Data());
1764 ReadPulls(pullsFile);
1765 WritePulls(fDBfileName.Data());
1767 //store the regularization parameters
1768 ReadRegParams(regPiFile,211);
1769 WriteRegParams(fDBfileName.Data(),211);
1770 ReadRegParams(regKaFile,321);
1771 WriteRegParams(fDBfileName.Data(),321);
1772 ReadRegParams(regPrFile,2212);
1773 WriteRegParams(fDBfileName.Data(),2212);
1774 ReadRegParams(regElFile,11);
1775 WriteRegParams(fDBfileName.Data(),11);
1776 ReadRegParams(regMuFile,13);
1777 WriteRegParams(fDBfileName.Data(),13);
1779 // store the dEdx parameters
1780 ReaddEdx(dEdxPiFile,211);
1781 WritedEdx(fDBfileName.Data(),211);
1782 ReaddEdx(dEdxKaFile,321);
1783 WritedEdx(fDBfileName.Data(),321);
1784 ReaddEdx(dEdxPrFile,2212);
1785 WritedEdx(fDBfileName.Data(),2212);
1786 ReaddEdx(dEdxElFile,11);
1787 WritedEdx(fDBfileName.Data(),11);
1788 ReaddEdx(dEdxMuFile,13);
1789 WritedEdx(fDBfileName.Data(),13);
1793 // store the regularized covariance matrices
1795 InitializeKineGrid("DB");
1797 const Int_t knBinsPi = fDBgridPi.GetTotBins();
1798 const Int_t knBinsKa = fDBgridKa.GetTotBins();
1799 const Int_t knBinsPr = fDBgridPr.GetTotBins();
1800 const Int_t knBinsEl = fDBgridEl.GetTotBins();
1801 const Int_t knBinsMu = fDBgridMu.GetTotBins();
1804 // create the trees for cov. matrices
1806 TTree *covTreePi1 = NULL;
1807 covTreePi1 = new TTree[knBinsPi];
1809 TTree *covTreeKa1 = NULL;
1810 covTreeKa1 = new TTree[knBinsKa];
1811 // trees for protons
1812 TTree *covTreePr1 = NULL;
1813 covTreePr1 = new TTree[knBinsPr];
1814 // trees for electrons
1815 TTree *covTreeEl1 = NULL;
1816 covTreeEl1 = new TTree[knBinsEl];
1818 TTree *covTreeMu1 = NULL;
1819 covTreeMu1 = new TTree[knBinsMu];
1821 Char_t hname[100], htitle[100];
1825 for(Int_t i=0; i<knBinsPi; i++) {
1826 sprintf(hname,"CovTreePi_bin%d",i);
1827 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1828 covTreePi1[i].SetName(hname); covTreePi1[i].SetTitle(htitle);
1829 covTreePi1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",5000000);
1831 for(Int_t i=0; i<knBinsKa; i++) {
1832 sprintf(hname,"CovTreeKa_bin%d",i);
1833 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1834 covTreeKa1[i].SetName(hname); covTreeKa1[i].SetTitle(htitle);
1835 covTreeKa1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1837 for(Int_t i=0; i<knBinsPr; i++) {
1838 sprintf(hname,"CovTreePr_bin%d",i);
1839 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1840 covTreePr1[i].SetName(hname); covTreePr1[i].SetTitle(htitle);
1841 covTreePr1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1843 for(Int_t i=0; i<knBinsEl; i++) {
1844 sprintf(hname,"CovTreeEl_bin%d",i);
1845 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1846 covTreeEl1[i].SetName(hname); covTreeEl1[i].SetTitle(htitle);
1847 covTreeEl1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1849 for(Int_t i=0; i<knBinsMu; i++) {
1850 sprintf(hname,"CovTreeMu_bin%d",i);
1851 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1852 covTreeMu1[i].SetName(hname); covTreeMu1[i].SetTitle(htitle);
1853 covTreeMu1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1857 // create the chain with the compared tracks
1858 TChain *cmptrktree = new TChain("cmptrktree");
1859 cmptrkchain.Add(cmFile1);
1860 cmptrkchain.Add(cmFile2);
1861 cmptrkchain.Add(cmFile3);
1864 TFile *infile = TFile::Open(cmFile);
1865 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
1868 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
1869 Int_t entries = (Int_t)cmptrktree->GetEntries();
1870 cerr<<" Number of entries: "<<entries<<endl;
1872 Int_t trkPdg,trkBin;
1873 Double_t trkKine[1],trkRegPar[3];
1874 Int_t *nPerBinPi = new Int_t[knBinsPi];
1875 for(Int_t k=0;k<knBinsPi;k++) nPerBinPi[k]=0;
1876 Int_t *nPerBinKa = new Int_t[knBinsKa];
1877 for(Int_t k=0;k<knBinsKa;k++) nPerBinKa[k]=0;
1878 Int_t *nPerBinMu = new Int_t[knBinsMu];
1879 for(Int_t k=0;k<knBinsMu;k++) nPerBinMu[k]=0;
1880 Int_t *nPerBinEl = new Int_t[knBinsEl];
1881 for(Int_t k=0;k<knBinsEl;k++) nPerBinEl[k]=0;
1882 Int_t *nPerBinPr = new Int_t[knBinsPr];
1883 for(Int_t k=0;k<knBinsPr;k++) nPerBinPr[k]=0;
1885 // loop on chain entries
1886 for(Int_t l=0; l<entries; l++) {
1887 if(l % 10000 == 0) cerr<<"--- Processing track "<<l<<" of "<<entries<<" ---"<<endl;
1889 cmptrktree->GetEvent(l);
1891 trkPdg = TMath::Abs(cmptrk.pdg);
1892 // use only pions, kaons, protons, electrons, muons
1893 if(trkPdg!=211 && trkPdg!=321 && trkPdg!=2212 && trkPdg!=11 && trkPdg!=13) continue;
1894 SetParticle(trkPdg);
1895 trkBin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
1896 //cerr<<cmptrk.pt<<" "<<cmptrk.eta<<" "<<trkBin<<endl;
1898 if(trkPdg==211 && nPerBinPi[trkBin]>=5000) continue;
1899 if(trkPdg==321 && nPerBinKa[trkBin]>=5000) continue;
1900 if(trkPdg==2212 && nPerBinPr[trkBin]>=5000) continue;
1901 if(trkPdg==11 && nPerBinEl[trkBin]>=5000) continue;
1902 if(trkPdg==13 && nPerBinMu[trkBin]>=5000) continue;
1904 trkKine[0] = cmptrk.p;
1906 // get regularized covariance matrix
1907 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(0,k);
1908 covmat.c00 = cmptrk.c00/RegFunc(trkKine,trkRegPar);
1909 covmat.c10 = cmptrk.c10;
1910 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(1,k);
1911 covmat.c11 = cmptrk.c11/RegFunc(trkKine,trkRegPar);
1912 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(2,k);
1913 covmat.c20 = cmptrk.c20/RegFunc(trkKine,trkRegPar);
1914 covmat.c21 = cmptrk.c21;
1915 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(3,k);
1916 covmat.c22 = cmptrk.c22/RegFunc(trkKine,trkRegPar);
1917 covmat.c30 = cmptrk.c30;
1918 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(4,k);
1919 covmat.c31 = cmptrk.c31/RegFunc(trkKine,trkRegPar);
1920 covmat.c32 = cmptrk.c32;
1921 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(5,k);
1922 covmat.c33 = cmptrk.c33/RegFunc(trkKine,trkRegPar);
1923 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(6,k);
1924 covmat.c40 = cmptrk.c40/RegFunc(trkKine,trkRegPar);
1925 covmat.c41 = cmptrk.c41;
1926 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(7,k);
1927 covmat.c42 = cmptrk.c42/RegFunc(trkKine,trkRegPar);
1928 covmat.c43 = cmptrk.c43;
1929 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(8,k);
1930 covmat.c44 = cmptrk.c44/RegFunc(trkKine,trkRegPar);
1935 covTreePi1[trkBin].Fill();
1936 nPerBinPi[trkBin]++;
1939 covTreeKa1[trkBin].Fill();
1940 nPerBinKa[trkBin]++;
1942 case 2212: // protons
1943 covTreePr1[trkBin].Fill();
1944 nPerBinPr[trkBin]++;
1946 case 11: // electrons
1947 covTreeEl1[trkBin].Fill();
1948 nPerBinEl[trkBin]++;
1951 covTreeMu1[trkBin].Fill();
1952 nPerBinMu[trkBin]++;
1955 } // loop on chain entries
1957 // store all trees the DB file
1958 TFile *dbfile = new TFile(fDBfileName.Data(),"update");
1959 dbfile->mkdir("CovMatrices");
1960 gDirectory->cd("/CovMatrices");
1961 gDirectory->mkdir("Pions");
1962 gDirectory->mkdir("Kaons");
1963 gDirectory->mkdir("Protons");
1964 gDirectory->mkdir("Electrons");
1965 gDirectory->mkdir("Muons");
1967 gDirectory->cd("/CovMatrices/Pions");
1968 fDBgridPi.SetName("DBgridPi"); fDBgridPi.Write();
1969 for(Int_t i=0;i<knBinsPi;i++) covTreePi1[i].Write();
1971 gDirectory->cd("/CovMatrices/Kaons");
1972 fDBgridKa.SetName("DBgridKa"); fDBgridKa.Write();
1973 for(Int_t i=0;i<knBinsKa;i++) covTreeKa1[i].Write();
1975 gDirectory->cd("/CovMatrices/Protons");
1976 fDBgridPr.SetName("DBgridPr"); fDBgridPr.Write();
1977 for(Int_t i=0;i<knBinsPr;i++) covTreePr1[i].Write();
1979 gDirectory->cd("/CovMatrices/Electrons");
1980 fDBgridEl.SetName("DBgridEl"); fDBgridEl.Write();
1981 for(Int_t i=0;i<knBinsEl;i++) covTreeEl1[i].Write();
1983 gDirectory->cd("/CovMatrices/Muons");
1984 fDBgridMu.SetName("DBgridMu"); fDBgridMu.Write();
1985 for(Int_t i=0;i<knBinsMu;i++) covTreeMu1[i].Write();
1988 delete [] nPerBinPi;
1989 delete [] nPerBinKa;
1990 delete [] nPerBinPr;
1991 delete [] nPerBinEl;
1992 delete [] nPerBinMu;
1996 //-----------------------------------------------------------------------------
1997 void AliTPCtrackerParam::MakeSeedsFromHits(AliTPC *tpc,TTree *th,
1998 TObjArray &seedArray) const {
1999 //-----------------------------------------------------------------------------
2000 // This function makes the seeds for tracks from the 1st hits in the TPC
2001 //-----------------------------------------------------------------------------
2003 Double_t xg,yg,zg,px,py,pz,pt;
2005 Int_t nTracks=(Int_t)th->GetEntries();
2007 cout<<"+++ Number of \"primary tracks\"(entries in TreeH): "<<nTracks<<
2010 AliTPChit *tpcHit=0;
2012 // loop over entries in TreeH
2013 for(Int_t l=0; l<nTracks; l++) {
2014 if(l%1000==0) cerr<<" --- Processing primary track "
2015 <<l<<" of "<<nTracks<<" ---\r";
2019 tpcHit=(AliTPChit*)tpc->FirstHit(-1);
2020 for( ; tpcHit; tpcHit=(AliTPChit*)tpc->NextHit() ) {
2021 if(tpcHit->fQ !=0.) continue;
2022 // Get particle momentum at hit
2023 px=tpcHit->X(); py=tpcHit->Y(); pz=tpcHit->Z();
2025 pt=TMath::Sqrt(px*px+py*py);
2026 // reject hits with Pt<mag*0.45 GeV/c
2027 if(pt<(fBz*0.45)) continue;
2030 label=tpcHit->Track();
2032 if((tpcHit=(AliTPChit*)tpc->NextHit())==0) break;
2033 if(tpcHit->fQ != 0.) continue;
2034 // Get global coordinates of hit
2035 xg=tpcHit->X(); yg=tpcHit->Y(); zg=tpcHit->Z();
2036 if(TMath::Sqrt(xg*xg+yg*yg)>90.) continue;
2039 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2041 // reject tracks which are not in the TPC acceptance
2042 if(!ioseed->InTPCAcceptance()) { delete ioseed; continue; }
2044 // put seed in array
2045 seedArray.AddLast(ioseed);
2048 } // loop over entries in TreeH
2052 //-----------------------------------------------------------------------------
2053 void AliTPCtrackerParam::MakeSeedsFromRefs(TTree *ttr,
2054 TObjArray &seedArray) const {
2055 //-----------------------------------------------------------------------------
2056 // This function makes the seeds for tracks from the track references
2057 //-----------------------------------------------------------------------------
2059 Double_t xg,yg,zg,px,py,pz,pt;
2063 TClonesArray *tkRefArray = new TClonesArray("AliTrackReference");
2065 TBranch *b =(TBranch*)ttr->GetBranch("TPC");
2066 if(!b) {cerr<<"TPC branch of TreeTR not found"<<endl; return; }
2067 b->SetAddress(&tkRefArray);
2068 Int_t nTkRef = (Int_t)b->GetEntries();
2069 cerr<<"+++ Number of entries in TreeTR(TPC): "<<nTkRef<<"\n";
2071 // loop on track references
2072 for(Int_t l=0; l<nTkRef; l++){
2073 //if(l%1000==0) cerr<<" --- Processing primary track "
2074 // <<l<<" of "<<nTkRef<<" ---\r";
2075 if(!b->GetEvent(l)) continue;
2076 nnn = tkRefArray->GetEntriesFast();
2078 if(nnn <= 0) continue;
2079 for(k=0; k<nnn; k++) {
2080 AliTrackReference *tkref = (AliTrackReference*)tkRefArray->UncheckedAt(k);
2088 label = tkref->GetTrack();
2090 pt=TMath::Sqrt(px*px+py*py);
2091 // reject hits with Pt<mag*0.45 GeV/c
2092 if(pt<(fBz*0.45)) continue;
2095 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2097 // reject if not at the inner part of TPC
2098 if(TMath::Abs(ioseed->GetXL()-83.8) > 0.2) {
2099 //cerr<<"not at TPC inner part: XL = "<<ioseed->GetXL()<<endl;
2100 delete ioseed; continue;
2103 // reject tracks which are not in the TPC acceptance
2104 if(!ioseed->InTPCAcceptance()) {
2105 delete ioseed; continue;
2108 // put seed in array
2109 seedArray.AddLast(ioseed);
2114 } // loop on track references
2121 //-----------------------------------------------------------------------------
2122 void AliTPCtrackerParam::MergeEvents(Int_t evFirst,Int_t evLast) {
2123 //-----------------------------------------------------------------------------
2124 // This function: 1) merges the files from track comparison
2125 // (beware: better no more than 100 events per file)
2126 // 2) computes the average TPC efficiencies
2127 //-----------------------------------------------------------------------------
2129 const char *outName="TPCeff.root";
2131 // merge files with tracks
2132 cerr<<" ******** MERGING FILES **********\n\n";
2134 // create the chain for the tree of compared tracks
2135 TChain ch1("cmptrktree");
2136 TChain ch2("cmptrktree");
2137 TChain ch3("cmptrktree");
2139 for(Int_t j=evFirst; j<=evLast; j++) {
2140 cerr<<"Processing event "<<j<<endl;
2142 TString covName("CovMatrix.");
2144 covName.Append(".root");
2146 if(gSystem->AccessPathName(covName.Data(),kFileExists)) continue;
2149 if(j<=100) ch1.Add(covName.Data());
2150 if(j>100 && j<=200) ch2.Add(covName.Data());
2151 if(j>200) ch3.Add(covName.Data());
2155 // merge chain in one file
2157 covOut = new TFile("CovMatrix_AllEvts_1.root","recreate");
2158 ch1.Merge(covOut,1000000000);
2161 covOut = new TFile("CovMatrix_AllEvts_2.root","recreate");
2162 ch2.Merge(covOut,1000000000);
2165 covOut = new TFile("CovMatrix_AllEvts_3.root","recreate");
2166 ch3.Merge(covOut,1000000000);
2172 cerr<<" ***** EFFICIENCIES ******\n\n";
2174 ReadEffs("TPCeff.1.root");
2176 Int_t n = fEffPi.GetTotPoints();
2177 Double_t *avEffPi = new Double_t[n];
2178 Double_t *avEffKa = new Double_t[n];
2179 Double_t *avEffPr = new Double_t[n];
2180 Double_t *avEffEl = new Double_t[n];
2181 Double_t *avEffMu = new Double_t[n];
2182 Int_t *evtsPi = new Int_t[n];
2183 Int_t *evtsKa = new Int_t[n];
2184 Int_t *evtsPr = new Int_t[n];
2185 Int_t *evtsEl = new Int_t[n];
2186 Int_t *evtsMu = new Int_t[n];
2188 for(Int_t j=0; j<n; j++) {
2189 avEffPi[j]=avEffKa[j]=avEffPr[j]=avEffEl[j]=avEffMu[j]=0.;
2190 evtsPi[j]=evtsKa[j]=evtsPr[j]=evtsEl[j]=evtsMu[j]=0;
2193 for(Int_t j=evFirst; j<=evLast; j++) {
2194 cerr<<"Processing event "<<j<<endl;
2196 TString effName("TPCeff.");
2198 effName.Append(".root");
2200 if(gSystem->AccessPathName(effName.Data(),kFileExists)) continue;
2202 ReadEffs(effName.Data());
2204 for(Int_t k=0; k<n; k++) {
2205 if(fEffPi.GetParam(k)>=0.) {avEffPi[k]+=fEffPi.GetParam(k); evtsPi[k]++;}
2206 if(fEffKa.GetParam(k)>=0.) {avEffKa[k]+=fEffKa.GetParam(k); evtsKa[k]++;}
2207 if(fEffPr.GetParam(k)>=0.) {avEffPr[k]+=fEffPr.GetParam(k); evtsPr[k]++;}
2208 if(fEffEl.GetParam(k)>=0.) {avEffEl[k]+=fEffEl.GetParam(k); evtsEl[k]++;}
2209 if(fEffMu.GetParam(k)>=0.) {avEffMu[k]+=fEffMu.GetParam(k); evtsMu[k]++;}
2214 // compute average efficiencies
2215 for(Int_t j=0; j<n; j++) {
2216 if(evtsPi[j]==0) evtsPi[j]++;
2217 fEffPi.SetParam(j,(Double_t)avEffPi[j]/evtsPi[j]);
2218 if(evtsKa[j]==0) evtsKa[j]++;
2219 fEffKa.SetParam(j,(Double_t)avEffKa[j]/evtsKa[j]);
2220 if(evtsPr[j]==0) evtsPr[j]++;
2221 fEffPr.SetParam(j,(Double_t)avEffPr[j]/evtsPr[j]);
2222 if(evtsEl[j]==0) evtsEl[j]++;
2223 fEffEl.SetParam(j,(Double_t)avEffEl[j]/evtsEl[j]);
2224 if(evtsMu[j]==0) evtsMu[j]++;
2225 fEffMu.SetParam(j,(Double_t)avEffMu[j]/evtsMu[j]);
2228 // write efficiencies to a file
2244 //-----------------------------------------------------------------------------
2245 Int_t AliTPCtrackerParam::ReadAllData(const Char_t* inName) {
2246 //-----------------------------------------------------------------------------
2247 // This function reads all parameters from the DB
2248 //-----------------------------------------------------------------------------
2250 if(!ReadEffs(inName)) return 0;
2251 if(!ReadPulls(inName)) return 0;
2252 if(!ReadRegParams(inName,211)) return 0;
2253 if(!ReadRegParams(inName,321)) return 0;
2254 if(!ReadRegParams(inName,2212)) return 0;
2255 if(!ReadRegParams(inName,11)) return 0;
2256 if(!ReadRegParams(inName,13)) return 0;
2257 if(!ReaddEdx(inName,211)) return 0;
2258 if(!ReaddEdx(inName,321)) return 0;
2259 if(!ReaddEdx(inName,2212)) return 0;
2260 if(!ReaddEdx(inName,11)) return 0;
2261 if(!ReaddEdx(inName,13)) return 0;
2262 if(!ReadDBgrid(inName)) return 0;
2263 if(!ReadCovTrees(inName)) return 0;
2267 //-----------------------------------------------------------------------------
2268 Int_t AliTPCtrackerParam::ReadCovTrees(const Char_t* inName) {
2269 //-----------------------------------------------------------------------------
2270 // This function reads the covariance matrix trees from the DB
2271 //-----------------------------------------------------------------------------
2273 if(gSystem->AccessPathName(inName,kFileExists)) {
2274 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2279 TFile *inFile = TFile::Open(inName);
2282 Int_t nBinsPi = fDBgridPi.GetTotBins();
2283 for(Int_t l=0; l<nBinsPi; l++) {
2284 str = "/CovMatrices/Pions/CovTreePi_bin";
2286 fCovTreePi[l] = (TTree*)inFile->Get(str.Data());
2287 //fCovTree = (TTree*)inFile->Get(str.Data());
2288 //fCovTreePi[l] = new TTree(*fCovTree);
2290 Int_t nBinsKa = fDBgridKa.GetTotBins();
2291 for(Int_t l=0; l<nBinsKa; l++) {
2292 str = "/CovMatrices/Kaons/CovTreeKa_bin";
2294 fCovTreeKa[l] = (TTree*)inFile->Get(str.Data());
2295 //fCovTree = (TTree*)inFile->Get(str.Data());
2296 //fCovTreeKa[l] = new TTree(*fCovTree);
2298 Int_t nBinsPr = fDBgridPr.GetTotBins();
2299 for(Int_t l=0; l<nBinsPr; l++) {
2301 str = "/CovMatrices/Pions/CovTreePi_bin";
2303 str = "/CovMatrices/Protons/CovTreePr_bin";
2306 fCovTreePr[l] = (TTree*)inFile->Get(str.Data());
2307 //fCovTree = (TTree*)inFile->Get(str.Data());
2308 //fCovTreePr[l] = new TTree(*fCovTree);
2310 Int_t nBinsEl = fDBgridEl.GetTotBins();
2311 for(Int_t l=0; l<nBinsEl; l++) {
2312 str = "/CovMatrices/Electrons/CovTreeEl_bin";
2314 fCovTreeEl[l] = (TTree*)inFile->Get(str.Data());
2315 //fCovTree = (TTree*)inFile->Get(str.Data());
2316 //fCovTreeEl[l] = new TTree(*fCovTree);
2318 Int_t nBinsMu = fDBgridMu.GetTotBins();
2319 for(Int_t l=0; l<nBinsMu; l++) {
2321 str = "/CovMatrices/Pions/CovTreePi_bin";
2323 str = "/CovMatrices/Muons/CovTreeMu_bin";
2326 fCovTreeMu[l] = (TTree*)inFile->Get(str.Data());
2327 //fCovTree = (TTree*)inFile->Get(str.Data());
2328 //fCovTreeMu[l] = new TTree(*fCovTree);
2335 //-----------------------------------------------------------------------------
2336 Int_t AliTPCtrackerParam::ReaddEdx(const Char_t* inName,Int_t pdg) {
2337 //-----------------------------------------------------------------------------
2338 // This function reads the dEdx parameters from the DB
2339 //-----------------------------------------------------------------------------
2341 if(gSystem->AccessPathName(inName,kFileExists)) {
2342 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2345 TFile *inFile = TFile::Open(inName);
2348 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2349 fdEdxMeanPi.~AliTPCkineGrid();
2350 new(&fdEdxMeanPi) AliTPCkineGrid(*fdEdxMean);
2351 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2352 fdEdxRMSPi.~AliTPCkineGrid();
2353 new(&fdEdxRMSPi) AliTPCkineGrid(*fdEdxRMS);
2356 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxMeanKa");
2357 fdEdxMeanKa.~AliTPCkineGrid();
2358 new(&fdEdxMeanKa) AliTPCkineGrid(*fdEdxMean);
2359 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxRMSKa");
2360 fdEdxRMSKa.~AliTPCkineGrid();
2361 new(&fdEdxRMSKa) AliTPCkineGrid(*fdEdxRMS);
2364 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxMeanPr");
2365 fdEdxMeanPr.~AliTPCkineGrid();
2366 new(&fdEdxMeanPr) AliTPCkineGrid(*fdEdxMean);
2367 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxRMSPr");
2368 fdEdxRMSPr.~AliTPCkineGrid();
2369 new(&fdEdxRMSPr) AliTPCkineGrid(*fdEdxRMS);
2372 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxMeanEl");
2373 fdEdxMeanEl.~AliTPCkineGrid();
2374 new(&fdEdxMeanEl) AliTPCkineGrid(*fdEdxMean);
2375 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxRMSEl");
2376 fdEdxRMSEl.~AliTPCkineGrid();
2377 new(&fdEdxRMSEl) AliTPCkineGrid(*fdEdxRMS);
2381 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2382 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2384 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxMeanMu");
2385 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxRMSMu");
2387 fdEdxMeanMu.~AliTPCkineGrid();
2388 new(&fdEdxMeanMu) AliTPCkineGrid(*fdEdxMean);
2389 fdEdxRMSMu.~AliTPCkineGrid();
2390 new(&fdEdxRMSMu) AliTPCkineGrid(*fdEdxRMS);
2397 //-----------------------------------------------------------------------------
2398 Int_t AliTPCtrackerParam::ReadDBgrid(const Char_t* inName) {
2399 //-----------------------------------------------------------------------------
2400 // This function reads the kine grid from the DB
2401 //-----------------------------------------------------------------------------
2403 if(gSystem->AccessPathName(inName,kFileExists)) {
2404 cerr<<"AliTPCtrackerParam::ReadCovMatrices: "<<inName<<" not found\n";
2407 TFile *inFile = TFile::Open(inName);
2409 // first read the DB grid for the different particles
2410 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2411 fDBgridPi.~AliTPCkineGrid();
2412 new(&fDBgridPi) AliTPCkineGrid(*fDBgrid);
2413 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Kaons/DBgridKa");
2414 fDBgridKa.~AliTPCkineGrid();
2415 new(&fDBgridKa) AliTPCkineGrid(*fDBgrid);
2417 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2419 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Protons/DBgridPr");
2421 fDBgridPr.~AliTPCkineGrid();
2422 new(&fDBgridPr) AliTPCkineGrid(*fDBgrid);
2423 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Electrons/DBgridEl");
2424 fDBgridEl.~AliTPCkineGrid();
2425 new(&fDBgridEl) AliTPCkineGrid(*fDBgrid);
2427 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2429 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Muons/DBgridMu");
2431 fDBgridMu.~AliTPCkineGrid();
2432 new(&fDBgridMu) AliTPCkineGrid(*fDBgrid);
2438 //-----------------------------------------------------------------------------
2439 Int_t AliTPCtrackerParam::ReadEffs(const Char_t* inName) {
2440 //-----------------------------------------------------------------------------
2441 // This function reads the TPC efficiencies from the DB
2442 //-----------------------------------------------------------------------------
2444 if(gSystem->AccessPathName(inName,kFileExists)) {
2445 cerr<<"AliTPCtrackerParam::ReadEffs: "<<inName<<" not found\n";
2448 TFile *inFile = TFile::Open(inName);
2450 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Pions/EffPi");
2451 fEffPi.~AliTPCkineGrid();
2452 new(&fEffPi) AliTPCkineGrid(*fEff);
2453 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Kaons/EffKa");
2454 fEffKa.~AliTPCkineGrid();
2455 new(&fEffKa) AliTPCkineGrid(*fEff);
2456 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Protons/EffPr");
2457 fEffPr.~AliTPCkineGrid();
2458 new(&fEffPr) AliTPCkineGrid(*fEff);
2459 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Electrons/EffEl");
2460 fEffEl.~AliTPCkineGrid();
2461 new(&fEffEl) AliTPCkineGrid(*fEff);
2462 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Muons/EffMu");
2463 fEffMu.~AliTPCkineGrid();
2464 new(&fEffMu) AliTPCkineGrid(*fEff);
2470 //-----------------------------------------------------------------------------
2471 Int_t AliTPCtrackerParam::ReadPulls(const Char_t* inName) {
2472 //-----------------------------------------------------------------------------
2473 // This function reads the pulls from the DB
2474 //-----------------------------------------------------------------------------
2476 if(gSystem->AccessPathName(inName,kFileExists)) {
2477 cerr<<"AliTPCtrackerParam::ReadPulls: "<<inName<<" not found\n";
2480 TFile *inFile = TFile::Open(inName);
2482 for(Int_t i=0; i<5; i++) {
2483 TString pi("/Pulls/Pions/PullsPi_"); pi+=i;
2484 TString ka("/Pulls/Kaons/PullsKa_"); ka+=i;
2485 TString pr("/Pulls/Protons/PullsPr_"); pr+=i;
2486 TString el("/Pulls/Electrons/PullsEl_"); el+=i;
2487 TString mu("/Pulls/Muons/PullsMu_"); mu+=i;
2489 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2490 fPullsPi[i].~AliTPCkineGrid();
2491 new(&fPullsPi[i]) AliTPCkineGrid(*fPulls);
2493 fPulls = (AliTPCkineGrid*)inFile->Get(ka.Data());
2494 fPullsKa[i].~AliTPCkineGrid();
2495 new(&fPullsKa[i]) AliTPCkineGrid(*fPulls);
2498 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2500 fPulls = (AliTPCkineGrid*)inFile->Get(pr.Data());
2502 fPullsPr[i].~AliTPCkineGrid();
2503 new(&fPullsPr[i]) AliTPCkineGrid(*fPulls);
2505 fPulls = (AliTPCkineGrid*)inFile->Get(el.Data());
2506 fPullsEl[i].~AliTPCkineGrid();
2507 new(&fPullsEl[i]) AliTPCkineGrid(*fPulls);
2510 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2512 fPulls = (AliTPCkineGrid*)inFile->Get(mu.Data());
2514 fPullsMu[i].~AliTPCkineGrid();
2515 new(&fPullsMu[i]) AliTPCkineGrid(*fPulls);
2522 //-----------------------------------------------------------------------------
2523 Int_t AliTPCtrackerParam::ReadRegParams(const Char_t* inName,Int_t pdg) {
2524 //-----------------------------------------------------------------------------
2525 // This function reads the regularization parameters from the DB
2526 //-----------------------------------------------------------------------------
2528 if(gSystem->AccessPathName(inName,kFileExists)) {
2529 cerr<<"AliTPCtrackerParam::ReadRegParams: "<<inName<<" not found\n";
2531 // Introduced change to "reverse" the TMatrixD read from file.
2532 // Needed because storage mode of TMatrixD changed from column-wise
2533 // to rwo-wise in ROOT.
2535 // A.Dainese 03/06/05
2537 TMatrixD dummyMatrix(9,3);
2539 TFile *inFile = TFile::Open(inName);
2542 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2543 new(&fRegParPi) TMatrixD(*fRegPar);
2544 //printf("before\n");
2545 //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));
2546 dummyMatrix = fRegParPi;
2547 fRegParPi(0,0) = dummyMatrix(0,0);
2548 fRegParPi(0,1) = dummyMatrix(0,1);
2549 fRegParPi(0,2) = dummyMatrix(0,2);
2550 fRegParPi(1,0) = dummyMatrix(3,0);
2551 fRegParPi(1,1) = dummyMatrix(1,1);
2552 fRegParPi(1,2) = dummyMatrix(1,2);
2553 fRegParPi(2,0) = dummyMatrix(6,0);
2554 fRegParPi(2,1) = dummyMatrix(3,2);
2555 fRegParPi(2,2) = dummyMatrix(2,2);
2556 fRegParPi(3,0) = dummyMatrix(1,0);
2557 fRegParPi(3,1) = dummyMatrix(4,0);
2558 fRegParPi(3,2) = dummyMatrix(7,0);
2559 fRegParPi(4,0) = dummyMatrix(3,1);
2560 fRegParPi(4,1) = dummyMatrix(4,1);
2561 fRegParPi(4,2) = dummyMatrix(7,1);
2562 fRegParPi(5,0) = dummyMatrix(6,1);
2563 fRegParPi(5,1) = dummyMatrix(4,2);
2564 fRegParPi(5,2) = dummyMatrix(7,2);
2565 fRegParPi(6,0) = dummyMatrix(2,0);
2566 fRegParPi(6,1) = dummyMatrix(5,0);
2567 fRegParPi(6,2) = dummyMatrix(8,0);
2568 fRegParPi(7,0) = dummyMatrix(2,1);
2569 fRegParPi(7,1) = dummyMatrix(5,1);
2570 fRegParPi(7,2) = dummyMatrix(8,1);
2571 fRegParPi(8,0) = dummyMatrix(6,2);
2572 fRegParPi(8,1) = dummyMatrix(5,2);
2573 fRegParPi(8,2) = dummyMatrix(8,2);
2574 //printf("after\n");
2575 //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));
2578 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Kaons/RegKaons");
2579 new(&fRegParKa) TMatrixD(*fRegPar);
2580 dummyMatrix = fRegParKa;
2581 fRegParKa(0,0) = dummyMatrix(0,0);
2582 fRegParKa(0,1) = dummyMatrix(0,1);
2583 fRegParKa(0,2) = dummyMatrix(0,2);
2584 fRegParKa(1,0) = dummyMatrix(3,0);
2585 fRegParKa(1,1) = dummyMatrix(1,1);
2586 fRegParKa(1,2) = dummyMatrix(1,2);
2587 fRegParKa(2,0) = dummyMatrix(6,0);
2588 fRegParKa(2,1) = dummyMatrix(3,2);
2589 fRegParKa(2,2) = dummyMatrix(2,2);
2590 fRegParKa(3,0) = dummyMatrix(1,0);
2591 fRegParKa(3,1) = dummyMatrix(4,0);
2592 fRegParKa(3,2) = dummyMatrix(7,0);
2593 fRegParKa(4,0) = dummyMatrix(3,1);
2594 fRegParKa(4,1) = dummyMatrix(4,1);
2595 fRegParKa(4,2) = dummyMatrix(7,1);
2596 fRegParKa(5,0) = dummyMatrix(6,1);
2597 fRegParKa(5,1) = dummyMatrix(4,2);
2598 fRegParKa(5,2) = dummyMatrix(7,2);
2599 fRegParKa(6,0) = dummyMatrix(2,0);
2600 fRegParKa(6,1) = dummyMatrix(5,0);
2601 fRegParKa(6,2) = dummyMatrix(8,0);
2602 fRegParKa(7,0) = dummyMatrix(2,1);
2603 fRegParKa(7,1) = dummyMatrix(5,1);
2604 fRegParKa(7,2) = dummyMatrix(8,1);
2605 fRegParKa(8,0) = dummyMatrix(6,2);
2606 fRegParKa(8,1) = dummyMatrix(5,2);
2607 fRegParKa(8,2) = dummyMatrix(8,2);
2611 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2613 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Protons/RegProtons");
2615 new(&fRegParPr) TMatrixD(*fRegPar);
2616 dummyMatrix = fRegParPr;
2617 fRegParPr(0,0) = dummyMatrix(0,0);
2618 fRegParPr(0,1) = dummyMatrix(0,1);
2619 fRegParPr(0,2) = dummyMatrix(0,2);
2620 fRegParPr(1,0) = dummyMatrix(3,0);
2621 fRegParPr(1,1) = dummyMatrix(1,1);
2622 fRegParPr(1,2) = dummyMatrix(1,2);
2623 fRegParPr(2,0) = dummyMatrix(6,0);
2624 fRegParPr(2,1) = dummyMatrix(3,2);
2625 fRegParPr(2,2) = dummyMatrix(2,2);
2626 fRegParPr(3,0) = dummyMatrix(1,0);
2627 fRegParPr(3,1) = dummyMatrix(4,0);
2628 fRegParPr(3,2) = dummyMatrix(7,0);
2629 fRegParPr(4,0) = dummyMatrix(3,1);
2630 fRegParPr(4,1) = dummyMatrix(4,1);
2631 fRegParPr(4,2) = dummyMatrix(7,1);
2632 fRegParPr(5,0) = dummyMatrix(6,1);
2633 fRegParPr(5,1) = dummyMatrix(4,2);
2634 fRegParPr(5,2) = dummyMatrix(7,2);
2635 fRegParPr(6,0) = dummyMatrix(2,0);
2636 fRegParPr(6,1) = dummyMatrix(5,0);
2637 fRegParPr(6,2) = dummyMatrix(8,0);
2638 fRegParPr(7,0) = dummyMatrix(2,1);
2639 fRegParPr(7,1) = dummyMatrix(5,1);
2640 fRegParPr(7,2) = dummyMatrix(8,1);
2641 fRegParPr(8,0) = dummyMatrix(6,2);
2642 fRegParPr(8,1) = dummyMatrix(5,2);
2643 fRegParPr(8,2) = dummyMatrix(8,2);
2646 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Electrons/RegElectrons");
2647 new(&fRegParEl) TMatrixD(*fRegPar);
2648 dummyMatrix = fRegParEl;
2649 fRegParEl(0,0) = dummyMatrix(0,0);
2650 fRegParEl(0,1) = dummyMatrix(0,1);
2651 fRegParEl(0,2) = dummyMatrix(0,2);
2652 fRegParEl(1,0) = dummyMatrix(3,0);
2653 fRegParEl(1,1) = dummyMatrix(1,1);
2654 fRegParEl(1,2) = dummyMatrix(1,2);
2655 fRegParEl(2,0) = dummyMatrix(6,0);
2656 fRegParEl(2,1) = dummyMatrix(3,2);
2657 fRegParEl(2,2) = dummyMatrix(2,2);
2658 fRegParEl(3,0) = dummyMatrix(1,0);
2659 fRegParEl(3,1) = dummyMatrix(4,0);
2660 fRegParEl(3,2) = dummyMatrix(7,0);
2661 fRegParEl(4,0) = dummyMatrix(3,1);
2662 fRegParEl(4,1) = dummyMatrix(4,1);
2663 fRegParEl(4,2) = dummyMatrix(7,1);
2664 fRegParEl(5,0) = dummyMatrix(6,1);
2665 fRegParEl(5,1) = dummyMatrix(4,2);
2666 fRegParEl(5,2) = dummyMatrix(7,2);
2667 fRegParEl(6,0) = dummyMatrix(2,0);
2668 fRegParEl(6,1) = dummyMatrix(5,0);
2669 fRegParEl(6,2) = dummyMatrix(8,0);
2670 fRegParEl(7,0) = dummyMatrix(2,1);
2671 fRegParEl(7,1) = dummyMatrix(5,1);
2672 fRegParEl(7,2) = dummyMatrix(8,1);
2673 fRegParEl(8,0) = dummyMatrix(6,2);
2674 fRegParEl(8,1) = dummyMatrix(5,2);
2675 fRegParEl(8,2) = dummyMatrix(8,2);
2679 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2681 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Muons/RegMuons");
2683 new(&fRegParMu) TMatrixD(*fRegPar);
2684 dummyMatrix = fRegParMu;
2685 fRegParMu(0,0) = dummyMatrix(0,0);
2686 fRegParMu(0,1) = dummyMatrix(0,1);
2687 fRegParMu(0,2) = dummyMatrix(0,2);
2688 fRegParMu(1,0) = dummyMatrix(3,0);
2689 fRegParMu(1,1) = dummyMatrix(1,1);
2690 fRegParMu(1,2) = dummyMatrix(1,2);
2691 fRegParMu(2,0) = dummyMatrix(6,0);
2692 fRegParMu(2,1) = dummyMatrix(3,2);
2693 fRegParMu(2,2) = dummyMatrix(2,2);
2694 fRegParMu(3,0) = dummyMatrix(1,0);
2695 fRegParMu(3,1) = dummyMatrix(4,0);
2696 fRegParMu(3,2) = dummyMatrix(7,0);
2697 fRegParMu(4,0) = dummyMatrix(3,1);
2698 fRegParMu(4,1) = dummyMatrix(4,1);
2699 fRegParMu(4,2) = dummyMatrix(7,1);
2700 fRegParMu(5,0) = dummyMatrix(6,1);
2701 fRegParMu(5,1) = dummyMatrix(4,2);
2702 fRegParMu(5,2) = dummyMatrix(7,2);
2703 fRegParMu(6,0) = dummyMatrix(2,0);
2704 fRegParMu(6,1) = dummyMatrix(5,0);
2705 fRegParMu(6,2) = dummyMatrix(8,0);
2706 fRegParMu(7,0) = dummyMatrix(2,1);
2707 fRegParMu(7,1) = dummyMatrix(5,1);
2708 fRegParMu(7,2) = dummyMatrix(8,1);
2709 fRegParMu(8,0) = dummyMatrix(6,2);
2710 fRegParMu(8,1) = dummyMatrix(5,2);
2711 fRegParMu(8,2) = dummyMatrix(8,2);
2718 //-----------------------------------------------------------------------------
2719 void AliTPCtrackerParam::RegularizeCovMatrix(const Char_t *outName,Int_t pdg) {
2720 //-----------------------------------------------------------------------------
2721 // This function regularizes the elements of the covariance matrix
2722 // that show a momentum depence:
2723 // c00, c11, c22, c33, c44, c20, c24, c40, c31
2724 // The regularization is done separately for pions, kaons, electrons:
2725 // give "Pion","Kaon" or "Electron" as first argument.
2726 //-----------------------------------------------------------------------------
2728 gStyle->SetOptStat(0);
2729 gStyle->SetOptFit(10001);
2732 const char *part="Pions - ";
2734 InitializeKineGrid("DB");
2736 const Int_t kfitbins = fDBgrid->GetBinsPt();
2737 cerr<<" Fit bins: "<<kfitbins<<endl;
2743 cerr<<" Processing pions ...\n";
2748 cerr<<" Processing kaons ...\n";
2750 case 2212: //protons
2753 cerr<<" Processing protons ...\n";
2755 case 11: // electrons
2757 part="Electrons - ";
2758 cerr<<" Processing electrons ...\n";
2763 cerr<<" Processing muons ...\n";
2769 // create a chain with compared tracks
2770 TChain *cmptrkchain = new ("cmptrktree");
2771 cmptrkchain.Add("CovMatrix_AllEvts.root");
2772 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
2773 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
2774 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
2778 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
2779 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
2782 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
2783 Int_t entries = (Int_t)cmptrktree->GetEntries();
2787 Int_t *n = new Int_t[kfitbins];
2788 Int_t *n00 = new Int_t[kfitbins];
2789 Int_t *n11 = new Int_t[kfitbins];
2790 Int_t *n20 = new Int_t[kfitbins];
2791 Int_t *n22 = new Int_t[kfitbins];
2792 Int_t *n31 = new Int_t[kfitbins];
2793 Int_t *n33 = new Int_t[kfitbins];
2794 Int_t *n40 = new Int_t[kfitbins];
2795 Int_t *n42 = new Int_t[kfitbins];
2796 Int_t *n44 = new Int_t[kfitbins];
2797 Double_t *p = new Double_t[kfitbins];
2798 Double_t *ep = new Double_t[kfitbins];
2799 Double_t *mean00 = new Double_t[kfitbins];
2800 Double_t *mean11 = new Double_t[kfitbins];
2801 Double_t *mean20 = new Double_t[kfitbins];
2802 Double_t *mean22 = new Double_t[kfitbins];
2803 Double_t *mean31 = new Double_t[kfitbins];
2804 Double_t *mean33 = new Double_t[kfitbins];
2805 Double_t *mean40 = new Double_t[kfitbins];
2806 Double_t *mean42 = new Double_t[kfitbins];
2807 Double_t *mean44 = new Double_t[kfitbins];
2808 Double_t *sigma00 = new Double_t[kfitbins];
2809 Double_t *sigma11 = new Double_t[kfitbins];
2810 Double_t *sigma20 = new Double_t[kfitbins];
2811 Double_t *sigma22 = new Double_t[kfitbins];
2812 Double_t *sigma31 = new Double_t[kfitbins];
2813 Double_t *sigma33 = new Double_t[kfitbins];
2814 Double_t *sigma40 = new Double_t[kfitbins];
2815 Double_t *sigma42 = new Double_t[kfitbins];
2816 Double_t *sigma44 = new Double_t[kfitbins];
2817 Double_t *rmean = new Double_t[kfitbins];
2818 Double_t *rsigma = new Double_t[kfitbins];
2821 for(Int_t l=0; l<kfitbins; l++) {
2823 n00[l]=n11[l]=n20[l]=n22[l]=n31[l]=n33[l]=n40[l]=n42[l]=n44[l]=1;
2825 mean00[l]=mean11[l]=mean20[l]=mean22[l]=mean31[l]=mean33[l]=mean40[l]=mean42[l]=mean44[l]=0.;
2826 sigma00[l]=sigma11[l]=sigma20[l]=sigma22[l]=sigma31[l]=sigma33[l]=sigma40[l]=sigma42[l]=sigma44[l]=0.;
2829 // loop on chain entries for mean
2830 for(Int_t l=0; l<entries; l++) {
2831 cmptrktree->GetEvent(l);
2832 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2833 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2836 mean00[pbin]+=cmptrk.c00;
2837 mean11[pbin]+=cmptrk.c11;
2838 mean20[pbin]+=cmptrk.c20;
2839 mean22[pbin]+=cmptrk.c22;
2840 mean31[pbin]+=cmptrk.c31;
2841 mean33[pbin]+=cmptrk.c33;
2842 mean40[pbin]+=cmptrk.c40;
2843 mean42[pbin]+=cmptrk.c42;
2844 mean44[pbin]+=cmptrk.c44;
2845 } // loop on chain entries
2847 for(Int_t l=0; l<kfitbins; l++) {
2860 // loop on chain entries for sigma
2861 for(Int_t l=0; l<entries; l++) {
2862 cmptrktree->GetEvent(l);
2863 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2864 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2865 if(TMath::Abs(cmptrk.c00-mean00[pbin])<0.4*mean00[pbin]) { n00[pbin]++;
2866 sigma00[pbin]+=(cmptrk.c00-mean00[pbin])*(cmptrk.c00-mean00[pbin]); }
2867 if(TMath::Abs(cmptrk.c11-mean11[pbin])<0.4*mean11[pbin]) { n11[pbin]++;
2868 sigma11[pbin]+=(cmptrk.c11-mean11[pbin])*(cmptrk.c11-mean11[pbin]); }
2869 if(TMath::Abs(cmptrk.c20-mean20[pbin])<0.4*mean20[pbin]) { n20[pbin]++;
2870 sigma20[pbin]+=(cmptrk.c20-mean20[pbin])*(cmptrk.c20-mean20[pbin]); }
2871 if(TMath::Abs(cmptrk.c22-mean22[pbin])<0.4*mean22[pbin]) { n22[pbin]++;
2872 sigma22[pbin]+=(cmptrk.c22-mean22[pbin])*(cmptrk.c22-mean22[pbin]); }
2873 if(TMath::Abs(cmptrk.c31-mean31[pbin])<-0.4*mean31[pbin]) { n31[pbin]++;
2874 sigma31[pbin]+=(cmptrk.c31-mean31[pbin])*(cmptrk.c31-mean31[pbin]); }
2875 if(TMath::Abs(cmptrk.c33-mean33[pbin])<0.4*mean33[pbin]) { n33[pbin]++;
2876 sigma33[pbin]+=(cmptrk.c33-mean33[pbin])*(cmptrk.c33-mean33[pbin]); }
2877 if(TMath::Abs(cmptrk.c40-mean40[pbin])<0.4*mean40[pbin]) { n40[pbin]++;
2878 sigma40[pbin]+=(cmptrk.c40-mean40[pbin])*(cmptrk.c40-mean40[pbin]); }
2879 if(TMath::Abs(cmptrk.c42-mean42[pbin])<0.4*mean42[pbin]) { n42[pbin]++;
2880 sigma42[pbin]+=(cmptrk.c42-mean42[pbin])*(cmptrk.c42-mean42[pbin]); }
2881 if(TMath::Abs(cmptrk.c44-mean44[pbin])<0.4*mean44[pbin]) { n44[pbin]++;
2882 sigma44[pbin]+=(cmptrk.c44-mean44[pbin])*(cmptrk.c44-mean44[pbin]); }
2883 } // loop on chain entries
2885 for(Int_t l=0; l<kfitbins; l++) {
2886 sigma00[l] = TMath::Sqrt(sigma00[l]/n00[l]);
2887 sigma11[l] = TMath::Sqrt(sigma11[l]/n11[l]);
2888 sigma20[l] = TMath::Sqrt(sigma20[l]/n20[l]);
2889 sigma22[l] = TMath::Sqrt(sigma22[l]/n22[l]);
2890 sigma31[l] = TMath::Sqrt(sigma31[l]/n31[l]);
2891 sigma33[l] = TMath::Sqrt(sigma33[l]/n33[l]);
2892 sigma40[l] = TMath::Sqrt(sigma40[l]/n40[l]);
2893 sigma42[l] = TMath::Sqrt(sigma42[l]/n42[l]);
2894 sigma44[l] = TMath::Sqrt(sigma44[l]/n44[l]);
2899 TF1 *func = new TF1("RegFunc",RegFunc,0.23,50.,3);
2900 func->SetParNames("A_meas","A_scatt","B");
2902 // line to draw on the plots
2903 TLine *lin = new TLine(-1,1,1.69,1);
2904 lin->SetLineStyle(2);
2905 lin->SetLineWidth(2);
2907 // matrix used to store fit results
2908 TMatrixD fitRes(9,3);
2912 // create the canvas
2913 TCanvas *canv00 = new TCanvas("canv00","c00",0,0,700,900);
2914 canv00->Divide(1,2);
2915 // create the graph for cov matrix
2916 TGraphErrors *gr00 = new TGraphErrors(kfitbins,p,mean00,ep,sigma00);
2917 TString title00("C(y,y)"); title00.Prepend(part);
2918 TH2F *frame00 = new TH2F("frame00",title00.Data(),2,0.1,50,2,0,5e-3);
2919 frame00->SetXTitle("p [GeV/c]");
2920 canv00->cd(1); gPad->SetLogx();
2923 // Sets initial values for parameters
2924 func->SetParameters(1.6e-3,1.9e-4,1.5);
2925 // Fit points in range defined by function
2926 gr00->Fit("RegFunc","R,Q");
2927 func->GetParameters(fitpar);
2928 for(Int_t i=0; i<3; i++) fitRes(0,i)=fitpar[i];
2929 for(Int_t l=0; l<kfitbins; l++) {
2930 rmean[l] = mean00[l]/RegFunc(&p[l],fitpar);
2931 rsigma[l] = sigma00[l]/RegFunc(&p[l],fitpar);
2933 // create the graph the regularized cov. matrix
2934 TGraphErrors *gr00reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
2935 TString regtitle00("C(y,y)/(A_meas+A_scatt/p^{B})");
2936 regtitle00.Prepend(part);
2937 TH2F *frame00reg = new TH2F("frame00reg",regtitle00.Data(),2,0.1,50,2,0,2);
2938 frame00reg->SetXTitle("p [GeV/c]");
2939 canv00->cd(2); gPad->SetLogx();
2947 // create the canvas
2948 TCanvas *canv11 = new TCanvas("canv11","c11",0,0,700,900);
2949 canv11->Divide(1,2);
2950 // create the graph for cov matrix
2951 TGraphErrors *gr11 = new TGraphErrors(kfitbins,p,mean11,ep,sigma11);
2952 TString title11("C(z,z)"); title11.Prepend(part);
2953 TH2F *frame11 = new TH2F("frame11",title11.Data(),2,0.1,50,2,0,6e-3);
2954 frame11->SetXTitle("p [GeV/c]");
2955 canv11->cd(1); gPad->SetLogx();
2958 // Sets initial values for parameters
2959 func->SetParameters(1.2e-3,8.1e-4,1.);
2960 // Fit points in range defined by function
2961 gr11->Fit("RegFunc","R,Q");
2962 func->GetParameters(fitpar);
2963 for(Int_t i=0; i<3; i++) fitRes(1,i)=fitpar[i];
2964 for(Int_t l=0; l<kfitbins; l++) {
2965 rmean[l] = mean11[l]/RegFunc(&p[l],fitpar);
2966 rsigma[l] = sigma11[l]/RegFunc(&p[l],fitpar);
2968 // create the graph the regularized cov. matrix
2969 TGraphErrors *gr11reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
2970 TString regtitle11("C(z,z)/(A_meas+A_scatt/p^{B})");
2971 regtitle11.Prepend(part);
2972 TH2F *frame11reg = new TH2F("frame11reg",regtitle11.Data(),2,0.1,50,2,0,2);
2973 frame11reg->SetXTitle("p [GeV/c]");
2974 canv11->cd(2); gPad->SetLogx();
2982 // create the canvas
2983 TCanvas *canv20 = new TCanvas("canv20","c20",0,0,700,900);
2984 canv20->Divide(1,2);
2985 // create the graph for cov matrix
2986 TGraphErrors *gr20 = new TGraphErrors(kfitbins,p,mean20,ep,sigma20);
2987 TString title20("C(#eta, y)"); title20.Prepend(part);
2988 TH2F *frame20 = new TH2F("frame20",title20.Data(),2,0.1,50,2,0,2.5e-4);
2989 frame20->SetXTitle("p [GeV/c]");
2990 canv20->cd(1); gPad->SetLogx();
2993 // Sets initial values for parameters
2994 func->SetParameters(7.3e-5,1.2e-5,1.5);
2995 // Fit points in range defined by function
2996 gr20->Fit("RegFunc","R,Q");
2997 func->GetParameters(fitpar);
2998 for(Int_t i=0; i<3; i++) fitRes(2,i)=fitpar[i];
2999 for(Int_t l=0; l<kfitbins; l++) {
3000 rmean[l] = mean20[l]/RegFunc(&p[l],fitpar);
3001 rsigma[l] = sigma20[l]/RegFunc(&p[l],fitpar);
3003 // create the graph the regularized cov. matrix
3004 TGraphErrors *gr20reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3005 TString regtitle20("C(#eta, y)/(A_meas+A_scatt/p^{B})");
3006 regtitle20.Prepend(part);
3007 TH2F *frame20reg = new TH2F("frame20reg",regtitle20.Data(),2,0.1,50,2,0,2);
3008 frame20reg->SetXTitle("p [GeV/c]");
3009 canv20->cd(2); gPad->SetLogx();
3017 // create the canvas
3018 TCanvas *canv22 = new TCanvas("canv22","c22",0,0,700,900);
3019 canv22->Divide(1,2);
3020 // create the graph for cov matrix
3021 TGraphErrors *gr22 = new TGraphErrors(kfitbins,p,mean22,ep,sigma22);
3022 TString title22("C(#eta, #eta)"); title22.Prepend(part);
3023 TH2F *frame22 = new TH2F("frame22",title22.Data(),2,0.1,50,2,0,3e-5);
3024 frame22->SetXTitle("p [GeV/c]");
3025 canv22->cd(1); gPad->SetLogx();
3028 // Sets initial values for parameters
3029 func->SetParameters(5.2e-6,1.1e-6,2.);
3030 // Fit points in range defined by function
3031 gr22->Fit("RegFunc","R,Q");
3032 func->GetParameters(fitpar);
3033 for(Int_t i=0; i<3; i++) fitRes(3,i)=fitpar[i];
3034 for(Int_t l=0; l<kfitbins; l++) {
3035 rmean[l] = mean22[l]/RegFunc(&p[l],fitpar);
3036 rsigma[l] = sigma22[l]/RegFunc(&p[l],fitpar);
3038 // create the graph the regularized cov. matrix
3039 TGraphErrors *gr22reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3040 TString regtitle22("C(#eta, #eta)/(A_meas+A_scatt/p^{B})");
3041 regtitle22.Prepend(part);
3042 TH2F *frame22reg = new TH2F("frame22reg",regtitle22.Data(),2,0.1,50,2,0,2);
3043 frame22reg->SetXTitle("p [GeV/c]");
3044 canv22->cd(2); gPad->SetLogx();
3052 // create the canvas
3053 TCanvas *canv31 = new TCanvas("canv31","c31",0,0,700,900);
3054 canv31->Divide(1,2);
3055 // create the graph for cov matrix
3056 TGraphErrors *gr31 = new TGraphErrors(kfitbins,p,mean31,ep,sigma31);
3057 TString title31("C(tg #lambda,z)"); title31.Prepend(part);
3058 TH2F *frame31 = new TH2F("frame31",title31.Data(),2,0.1,50,2,-2e-4,0);
3059 frame31->SetXTitle("p [GeV/c]");
3060 canv31->cd(1); gPad->SetLogx();
3063 // Sets initial values for parameters
3064 func->SetParameters(-1.2e-5,-1.2e-5,1.5);
3065 // Fit points in range defined by function
3066 gr31->Fit("RegFunc","R,Q");
3067 func->GetParameters(fitpar);
3068 for(Int_t i=0; i<3; i++) fitRes(4,i)=fitpar[i];
3069 for(Int_t l=0; l<kfitbins; l++) {
3070 rmean[l] = mean31[l]/RegFunc(&p[l],fitpar);
3071 rsigma[l] = -sigma31[l]/RegFunc(&p[l],fitpar);
3073 // create the graph the regularized cov. matrix
3074 TGraphErrors *gr31reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3075 TString regtitle31("C(tg #lambda,z)/(A_meas+A_scatt/p^{B})");
3076 regtitle31.Prepend(part);
3077 TH2F *frame31reg = new TH2F("frame31reg",regtitle31.Data(),2,0.1,50,2,0,2);
3078 frame31reg->SetXTitle("p [GeV/c]");
3079 canv31->cd(2); gPad->SetLogx();
3087 // create the canvas
3088 TCanvas *canv33 = new TCanvas("canv33","c33",0,0,700,900);
3089 canv33->Divide(1,2);
3090 // create the graph for cov matrix
3091 TGraphErrors *gr33 = new TGraphErrors(kfitbins,p,mean33,ep,sigma33);
3092 TString title33("C(tg #lambda,tg #lambda)"); title33.Prepend(part);
3093 TH2F *frame33 = new TH2F("frame33",title33.Data(),2,0.1,50,2,0,1e-5);
3094 frame33->SetXTitle("p [GeV/c]");
3095 canv33->cd(1); gPad->SetLogx();
3098 // Sets initial values for parameters
3099 func->SetParameters(1.3e-7,4.6e-7,1.7);
3100 // Fit points in range defined by function
3101 gr33->Fit("RegFunc","R,Q");
3102 func->GetParameters(fitpar);
3103 for(Int_t i=0; i<3; i++) fitRes(5,i)=fitpar[i];
3104 for(Int_t l=0; l<kfitbins; l++) {
3105 rmean[l] = mean33[l]/RegFunc(&p[l],fitpar);
3106 rsigma[l] = sigma33[l]/RegFunc(&p[l],fitpar);
3108 // create the graph the regularized cov. matrix
3109 TGraphErrors *gr33reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3110 TString regtitle33("C(tg #lambda,tg #lambda)/(A_meas+A_scatt/p^{B})");
3111 regtitle33.Prepend(part);
3112 TH2F *frame33reg = new TH2F("frame33reg",regtitle33.Data(),2,0.1,50,2,0,2);
3113 frame33reg->SetXTitle("p [GeV/c]");
3114 canv33->cd(2); gPad->SetLogx();
3122 // create the canvas
3123 TCanvas *canv40 = new TCanvas("canv40","c40",0,0,700,900);
3124 canv40->Divide(1,2);
3125 // create the graph for cov matrix
3126 TGraphErrors *gr40 = new TGraphErrors(kfitbins,p,mean40,ep,sigma40);
3127 TString title40("C(C,y)"); title40.Prepend(part);
3128 TH2F *frame40 = new TH2F("frame40",title40.Data(),2,0.1,50,2,0,1e-6);
3129 frame40->SetXTitle("p [GeV/c]");
3130 canv40->cd(1); gPad->SetLogx();
3133 // Sets initial values for parameters
3134 func->SetParameters(4.e-7,4.4e-8,1.5);
3135 // Fit points in range defined by function
3136 gr40->Fit("RegFunc","R,Q");
3137 func->GetParameters(fitpar);
3138 for(Int_t i=0; i<3; i++) fitRes(6,i)=fitpar[i];
3139 for(Int_t l=0; l<kfitbins; l++) {
3140 rmean[l] = mean40[l]/RegFunc(&p[l],fitpar);
3141 rsigma[l] = sigma40[l]/RegFunc(&p[l],fitpar);
3143 // create the graph the regularized cov. matrix
3144 TGraphErrors *gr40reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3145 TString regtitle40("C(C,y)/(A_meas+A_scatt/p^{B})");
3146 regtitle40.Prepend(part);
3147 TH2F *frame40reg = new TH2F("frame40reg",regtitle40.Data(),2,0.1,50,2,0,2);
3148 frame40reg->SetXTitle("p [GeV/c]");
3149 canv40->cd(2); gPad->SetLogx();
3157 // create the canvas
3158 TCanvas *canv42 = new TCanvas("canv42","c42",0,0,700,900);
3159 canv42->Divide(1,2);
3160 // create the graph for cov matrix
3161 TGraphErrors *gr42 = new TGraphErrors(kfitbins,p,mean42,ep,sigma42);
3162 TString title42("C(C, #eta)"); title42.Prepend(part);
3163 TH2F *frame42 = new TH2F("frame42",title42.Data(),2,0.1,50,2,0,2.2e-7);
3164 frame42->SetXTitle("p [GeV/c]");
3165 canv42->cd(1); gPad->SetLogx();
3168 // Sets initial values for parameters
3169 func->SetParameters(3.e-8,8.2e-9,2.);
3170 // Fit points in range defined by function
3171 gr42->Fit("RegFunc","R,Q");
3172 func->GetParameters(fitpar);
3173 for(Int_t i=0; i<3; i++) fitRes(7,i)=fitpar[i];
3174 for(Int_t l=0; l<kfitbins; l++) {
3175 rmean[l] = mean42[l]/RegFunc(&p[l],fitpar);
3176 rsigma[l] = sigma42[l]/RegFunc(&p[l],fitpar);
3178 // create the graph the regularized cov. matrix
3179 TGraphErrors *gr42reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3180 TString regtitle42("C(C, #eta)/(A_meas+A_scatt/p^{B})");
3181 regtitle42.Prepend(part);
3182 TH2F *frame42reg = new TH2F("frame42reg",regtitle42.Data(),2,0.1,50,2,0,2);
3183 frame42reg->SetXTitle("p [GeV/c]");
3184 canv42->cd(2); gPad->SetLogx();
3192 // create the canvas
3193 TCanvas *canv44 = new TCanvas("canv44","c44",0,0,700,900);
3194 canv44->Divide(1,2);
3195 // create the graph for cov matrix
3196 TGraphErrors *gr44 = new TGraphErrors(kfitbins,p,mean44,ep,sigma44);
3197 TString title44("C(C,C)"); title44.Prepend(part);
3198 TH2F *frame44 = new TH2F("frame44",title44.Data(),2,0.1,50,2,0,2e-9);
3199 frame44->SetXTitle("p [GeV/c]");
3200 canv44->cd(1); gPad->SetLogx();
3203 // Sets initial values for parameters
3204 func->SetParameters(1.8e-10,5.8e-11,2.);
3205 // Fit points in range defined by function
3206 gr44->Fit("RegFunc","R,Q");
3207 func->GetParameters(fitpar);
3208 for(Int_t i=0; i<3; i++) fitRes(8,i)=fitpar[i];
3209 for(Int_t l=0; l<kfitbins; l++) {
3210 rmean[l] = mean44[l]/RegFunc(&p[l],fitpar);
3211 rsigma[l] = sigma44[l]/RegFunc(&p[l],fitpar);
3213 // create the graph the regularized cov. matrix
3214 TGraphErrors *gr44reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3215 TString regtitle44("C(C,C)/(A_meas+A_scatt/p^{B})");
3216 regtitle44.Prepend(part);
3217 TH2F *frame44reg = new TH2F("frame44reg",regtitle44.Data(),2,0.1,50,2,0,2);
3218 frame44reg->SetXTitle("p [GeV/c]");
3219 canv44->cd(2); gPad->SetLogx();
3229 new(&fRegParPi) TMatrixD(fitRes);
3232 new(&fRegParKa) TMatrixD(fitRes);
3235 new(&fRegParPr) TMatrixD(fitRes);
3238 new(&fRegParEl) TMatrixD(fitRes);
3241 new(&fRegParMu) TMatrixD(fitRes);
3245 // write fit parameters to file
3246 WriteRegParams(outName,pdg);
3283 //-----------------------------------------------------------------------------
3284 Bool_t AliTPCtrackerParam::SelectedTrack(Double_t pt,Double_t eta) const {
3285 //-----------------------------------------------------------------------------
3286 // This function makes a selection according to TPC tracking efficiency
3287 //-----------------------------------------------------------------------------
3291 eff = fEff->GetValueAt(pt,eta);
3293 if(gRandom->Rndm() < eff) return kTRUE;
3297 //-----------------------------------------------------------------------------
3298 void AliTPCtrackerParam::SetParticle(Int_t pdg) {
3299 //-----------------------------------------------------------------------------
3300 // This function set efficiencies, pulls, etc... for the particle
3301 // specie of the current particle
3302 //-----------------------------------------------------------------------------
3306 fDBgrid = &fDBgridPi;
3309 fRegPar = &fRegParPi;
3310 fdEdxMean = &fdEdxMeanPi;
3311 fdEdxRMS = &fdEdxRMSPi;
3314 fDBgrid = &fDBgridKa;
3317 fRegPar = &fRegParKa;
3318 fdEdxMean = &fdEdxMeanKa;
3319 fdEdxRMS = &fdEdxRMSKa;
3322 fDBgrid = &fDBgridPr;
3325 fRegPar = &fRegParPr;
3326 fdEdxMean = &fdEdxMeanPr;
3327 fdEdxRMS = &fdEdxRMSPr;
3330 fDBgrid = &fDBgridEl;
3333 fRegPar = &fRegParEl;
3334 fdEdxMean = &fdEdxMeanEl;
3335 fdEdxRMS = &fdEdxRMSEl;
3338 fDBgrid = &fDBgridMu;
3341 fRegPar = &fRegParMu;
3342 fdEdxMean = &fdEdxMeanMu;
3343 fdEdxRMS = &fdEdxRMSMu;
3349 //-----------------------------------------------------------------------------
3350 void AliTPCtrackerParam::SmearTrack(Double_t *xx,Double_t *xxsm,TMatrixD cov)
3352 //-----------------------------------------------------------------------------
3353 // This function smears track parameters according to streched cov. matrix
3354 //-----------------------------------------------------------------------------
3355 Double_t xref=xxsm[0]; xxsm[0]=0;
3357 AliGausCorr *corgen = new AliGausCorr(cov,5);
3359 corgen->GetGaussN(corr);
3360 // check on fP2(ESD) = fX*fP4-fP2(TPC)
3361 // with fX=xref (not smeared), fP4=xx[4]+corr[4] e fP2=xx[2]+corr[2];
3362 // if fP2(ESD)^2 > 1 -> resmear...
3363 Double_t fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3364 while ( (fp2esd*fp2esd) > 1.0 ) {
3365 Warning("SmearTrack()","Badly smeared track, retrying...");
3366 corgen->GetGaussN(corr);
3367 fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3373 for(Int_t l=0;l<5;l++) xxsm[l] = xx[l]+corr[l];
3377 //-----------------------------------------------------------------------------
3378 Int_t AliTPCtrackerParam::WritedEdx(const Char_t *outName,Int_t pdg) {
3379 //-----------------------------------------------------------------------------
3380 // This function writes the dEdx parameters to the DB
3381 //-----------------------------------------------------------------------------
3384 const char *dirName="Pions";
3385 const char *meanName="dEdxMeanPi";
3386 const char *rmsName="dEdxRMSPi";
3390 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3391 } else { opt="update"; }
3396 meanName="dEdxMeanPi";
3397 rmsName="dEdxRMSPi";
3401 meanName="dEdxMeanKa";
3402 rmsName="dEdxRMSKa";
3406 meanName="dEdxMeanPr";
3407 rmsName="dEdxRMSPr";
3410 dirName="Electrons";
3411 meanName="dEdxMeanEl";
3412 rmsName="dEdxRMSEl";
3416 meanName="dEdxMeanMu";
3417 rmsName="dEdxRMSMu";
3421 TFile *outFile = new TFile(outName,opt);
3422 if(!gDirectory->cd("/dEdx")) {
3423 outFile->mkdir("dEdx");
3424 gDirectory->cd("/dEdx");
3426 TDirectory *dir2 = gDirectory->mkdir(dirName);
3428 fdEdxMean->SetName(meanName); fdEdxMean->Write();
3429 fdEdxRMS->SetName(rmsName); fdEdxRMS->Write();
3437 //-----------------------------------------------------------------------------
3438 Int_t AliTPCtrackerParam::WriteEffs(const Char_t *outName) {
3439 //-----------------------------------------------------------------------------
3440 // This function writes the TPC efficiencies to the DB
3441 //-----------------------------------------------------------------------------
3446 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3447 } else { opt="update"; }
3449 TFile *outFile = new TFile(outName,opt);
3451 outFile->mkdir("Efficiencies");
3452 gDirectory->cd("/Efficiencies");
3453 gDirectory->mkdir("Pions");
3454 gDirectory->mkdir("Kaons");
3455 gDirectory->mkdir("Protons");
3456 gDirectory->mkdir("Electrons");
3457 gDirectory->mkdir("Muons");
3459 gDirectory->cd("/Efficiencies/Pions");
3460 fEffPi.SetName("EffPi");
3462 gDirectory->cd("/Efficiencies/Kaons");
3463 fEffKa.SetName("EffKa");
3465 gDirectory->cd("/Efficiencies/Protons");
3466 fEffPr.SetName("EffPr");
3468 gDirectory->cd("/Efficiencies/Electrons");
3469 fEffEl.SetName("EffEl");
3471 gDirectory->cd("/Efficiencies/Muons");
3472 fEffMu.SetName("EffMu");
3481 //-----------------------------------------------------------------------------
3482 Int_t AliTPCtrackerParam::WritePulls(const Char_t *outName) {
3483 //-----------------------------------------------------------------------------
3484 // This function writes the pulls to the DB
3485 //-----------------------------------------------------------------------------
3489 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3490 } else { opt="update"; }
3492 TFile *outFile = new TFile(outName,opt);
3494 outFile->mkdir("Pulls");
3495 gDirectory->cd("/Pulls");
3496 gDirectory->mkdir("Pions");
3497 gDirectory->mkdir("Kaons");
3498 gDirectory->mkdir("Protons");
3499 gDirectory->mkdir("Electrons");
3500 gDirectory->mkdir("Muons");
3502 for(Int_t i=0;i<5;i++) {
3503 TString pi("PullsPi_"); pi+=i;
3504 TString ka("PullsKa_"); ka+=i;
3505 TString pr("PullsPr_"); pr+=i;
3506 TString el("PullsEl_"); el+=i;
3507 TString mu("PullsMu_"); mu+=i;
3508 fPullsPi[i].SetName(pi.Data());
3509 fPullsKa[i].SetName(ka.Data());
3510 fPullsPr[i].SetName(pr.Data());
3511 fPullsEl[i].SetName(el.Data());
3512 fPullsMu[i].SetName(mu.Data());
3513 gDirectory->cd("/Pulls/Pions");
3514 fPullsPi[i].Write();
3515 gDirectory->cd("/Pulls/Kaons");
3516 fPullsKa[i].Write();
3517 gDirectory->cd("/Pulls/Protons");
3518 fPullsPr[i].Write();
3519 gDirectory->cd("/Pulls/Electrons");
3520 fPullsEl[i].Write();
3521 gDirectory->cd("/Pulls/Muons");
3522 fPullsMu[i].Write();
3529 //-----------------------------------------------------------------------------
3530 Int_t AliTPCtrackerParam::WriteRegParams(const Char_t *outName,Int_t pdg) {
3531 //-----------------------------------------------------------------------------
3532 // This function writes the regularization parameters to the DB
3533 //-----------------------------------------------------------------------------
3536 const char *dirName="Pions";
3537 const char *keyName="RegPions";
3541 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3542 } else { opt="update"; }
3555 keyName="RegProtons";
3558 dirName="Electrons";
3559 keyName="RegElectrons";
3567 TFile *outFile = new TFile(outName,opt);
3568 if(!gDirectory->cd("/RegParams")) {
3569 outFile->mkdir("RegParams");
3570 gDirectory->cd("/RegParams");
3572 TDirectory *dir2 = gDirectory->mkdir(dirName);
3574 fRegPar->Write(keyName);
3582 //-----------------------------------------------------------------------------
3583 //*****************************************************************************
3584 //-----------------------------------------------------------------------------