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):TObject(),
124 fEvFolderName(evfoldname),
163 //-----------------------------------------------------------------------------
164 // This is the class conctructor
165 //-----------------------------------------------------------------------------
167 // fBz = kBz; // value of the z component of L3 field (Tesla)
168 // fColl = kcoll; // collision code (0: PbPb6000; 1: pp)
169 // fSelAndSmear = kTRUE; // by default selection and smearing are done
171 if(fBz!=0.4 && fBz!=0.5) {
172 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid field!\n Available: 0.4 or 0.5");
174 if(fColl!=0 && fColl!=1) {
175 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid collision!\n Available: 0 -> PbPb6000\n 1 -> pp");
178 fDBfileName = gSystem->Getenv("ALICE_ROOT");
179 fDBfileName.Append("/TPC/CovMatrixDB_");
180 //fDBfileName = "CovMatrixDB_";
181 if(fColl==0) fDBfileName.Append("PbPb6000");
182 if(fColl==1) fDBfileName.Append("pp");
183 if(fBz==0.4) fDBfileName.Append("_B0.4T.root");
184 // use same DB for 0.4 and 0.5 T; for 0.5 T, correction done in CookTrack()
185 if(fBz==0.5) fDBfileName.Append("_B0.4T.root");
187 //-----------------------------------------------------------------------------
188 AliTPCtrackerParam::~AliTPCtrackerParam() {}
189 //____________________________________________________________________________
190 AliTPCtrackerParam::AliTPCtrackerParam( const AliTPCtrackerParam& p)
231 // dummy copy constructor
233 //----------------------------------------------------------------------------
234 AliTPCtrackerParam::AliTPCseedGeant::AliTPCseedGeant(
235 Double_t x,Double_t y,Double_t z,
236 Double_t px,Double_t py,Double_t pz,
250 //----------------------------------------------------------------------------
251 // Constructor of the geant seeds
252 //----------------------------------------------------------------------------
254 Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
256 fSector = (Int_t)(a/20.);
257 fAlpha = 10.+20.*fSector;
259 fAlpha *= TMath::Pi();
261 //-----------------------------------------------------------------------------
262 Int_t AliTPCtrackerParam::Init() {
263 //-----------------------------------------------------------------------------
264 // This function reads the DB from file
265 //-----------------------------------------------------------------------------
268 printf("+++\n+++ Reading DataBase from:%s\n+++\n+++\n",fDBfileName.Data());
269 // Read paramters from DB file
270 if(!ReadAllData(fDBfileName.Data())) {
271 printf("AliTPCtrackerParam::BuildTPCtracks: \
272 Could not read data from DB\n\n"); return 1;
275 } else printf("\n ! Creating ALL TRUE tracks at TPC inner radius !\n\n");
278 // Check if value in the galice file is equal to selected one (fBz)
279 AliMagF *fiel = (AliMagF*)gAlice->Field();
280 Double_t fieval=TMath::Abs((Double_t)fiel->SolenoidField()/10.);
281 printf("Magnetic field is %6.2f Tesla\n",fieval);
283 printf("AliTPCtrackerParam::BuildTPCtracks: Invalid field!");
284 printf("Field selected is: %f T\n",fBz);
285 printf("Field found on file is: %f T\n",fieval);
289 // Set the conversion constant between curvature and Pt
290 AliTracker::SetFieldMap(fiel,kTRUE);
294 //-----------------------------------------------------------------------------
295 Int_t AliTPCtrackerParam::BuildTPCtracks(AliESD *event) {
296 //-----------------------------------------------------------------------------
297 // This function creates the TPC parameterized tracks and writes them
298 // as AliESDtrack objects in the ESD event
299 //-----------------------------------------------------------------------------
302 if(!event) return -1;
304 AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
306 Error("BuildTPCtracks","Can not get Run Loader from event folder named %s",
307 fEvFolderName.Data());
310 AliLoader* tpcloader = rl->GetLoader("TPCLoader");
311 if (tpcloader == 0x0) {
312 Error("BuildTPCtracks","Can not get TPC Loader from Run Loader.");
316 // Get gAlice object from file
317 if(!gAlice) rl->LoadgAlice();
319 rl->LoadKinematics();
320 tpcloader->LoadHits("read");
322 if(!(gAlice=rl->GetAliRun())) {
323 printf("Cannot get gAlice from Run Loader !\n");
328 AliTPC *tpc=(AliTPC*)gAlice->GetDetector("TPC");
331 AliTPCParam *digp=(AliTPCParam*)gDirectory->Get("75x40_100x60");
334 digp = new AliTPCParamSR();
336 else digp=(AliTPCParam*)gDirectory->Get("75x40_100x60_150x60");
338 if(!digp) { cerr<<"TPC parameters have not been found !\n"; return 1; }
342 AliTPCseedGeant *seed=0;
343 AliTPCtrack *tpctrack=0;
345 Int_t bin,label,pdg,charge;
347 Int_t nParticles,nSeeds,arrentr;
348 //Int_t nSel=0,nAcc=0;
350 Int_t evt=event->GetEventNumber();
354 // array for TPC tracks
355 TObjArray tArray(20000);
357 // array for TPC seeds with geant info
358 TObjArray sArray(20000);
360 // get the particles stack
361 nParticles = (Int_t)gAlice->GetEvent(evt);
363 Bool_t *done = new Bool_t[nParticles];
364 Int_t *pdgCodes = new Int_t[nParticles];
366 // loop on particles and store pdg codes
367 for(Int_t l=0; l<nParticles; l++) {
368 part = (TParticle*)gAlice->GetMCApp()->Particle(l);
369 pdgCodes[l] = part->GetPdgCode();
373 printf("+++ Number of particles: %d\n",nParticles);
375 // Create the seeds for the TPC tracks at the inner radius of TPC
377 // Get TreeH with hits
378 TTree *th = tpcloader->TreeH();
379 MakeSeedsFromHits(tpc,th,sArray);
381 // Get TreeTR with track references
383 TTree *ttr = rl->TreeTR();
385 MakeSeedsFromRefs(ttr,sArray);
388 nSeeds = sArray.GetEntries();
389 printf("+++ Number of seeds: %d\n",nSeeds);
391 // loop over entries in sArray
392 for(Int_t l=0; l<nSeeds; l++) {
393 //if(l%1==0) printf(" --- Processing seed %d of %d ---\n",l,nSeeds);
395 seed = (AliTPCseedGeant*)sArray.At(l);
398 label = seed->GetLabel();
400 // check if this track has already been processed
401 if(done[label]) continue;
403 // PDG code & electric charge
404 pdg = pdgCodes[label];
405 if(pdg>200 || pdg==-11 || pdg==-13) { charge=1; }
406 else if(pdg<-200 || pdg==11 || pdg==13) { charge=-1; }
408 pdg = TMath::Abs(pdg);
409 if(pdg>3000) pdg=211;
411 if(fSelAndSmear) SetParticle(pdg);
414 sEta = seed->GetEta();
416 // Apply selection according to TPC efficiency
417 //if(TMath::Abs(pdg)==211) nAcc++;
418 if(fSelAndSmear && !SelectedTrack(sPt,sEta)) continue;
419 //if(TMath::Abs(pdg)==211) nSel++;
421 // create AliTPCtrack object
422 BuildTrack(seed,charge);
425 bin = fDBgrid->GetBin(sPt,sEta);
428 //fCovTree = &(fCovTreePi[bin]);
429 fCovTree = fCovTreePi[bin];
432 //fCovTree = &(fCovTreeKa[bin]);
433 fCovTree = fCovTreeKa[bin];
436 //fCovTree = &(fCovTreePr[bin]);
437 fCovTree = fCovTreePr[bin];
440 //fCovTree = &(fCovTreeEl[bin]);
441 fCovTree = fCovTreeEl[bin];
444 //fCovTree = &(fCovTreeMu[bin]);
445 fCovTree = fCovTreeMu[bin];
448 // deal with covariance matrix and smearing of parameters
451 // assign the track a dE/dx and make a rough PID
455 // put track in array
456 AliTPCtrack *iotrack = new AliTPCtrack(fTrack);
457 iotrack->SetLabel(label);
458 tArray.AddLast(iotrack);
459 // Mark track as "done" and register the pdg code
463 } // loop over entries in sArray
465 // sort array with TPC tracks (decreasing pT)
468 // convert to AliESDtrack and write to AliESD
469 arrentr = tArray.GetEntriesFast();
472 for(Int_t l=0; l<arrentr; l++) {
473 tpctrack=(AliTPCtrack*)tArray.UncheckedAt(l);
474 AliESDtrack ioESDtrack;
475 ioESDtrack.UpdateTrackParams(tpctrack,AliESDtrack::kTPCin);
477 wgts[0]=0.; wgts[1]=0.; wgts[2]=0.; wgts[3]=0.; wgts[4]=0.;
478 if(TMath::Abs(tpctrack->GetMass()-0.9)<0.1) {
480 } else if(TMath::Abs(tpctrack->GetMass()-0.5)<0.1) {
486 ioESDtrack.SetESDpid(wgts);
487 event->AddTrack(&ioESDtrack);
494 printf("+++ Number of TPC tracks: %d\n",tracks);
495 //cerr<<"Average Eff: "<<(Float_t)nSel/nAcc<<endl;
502 //-----------------------------------------------------------------------------
503 void AliTPCtrackerParam::AnalyzedEdx(const Char_t *outName,Int_t pdg) {
504 //-----------------------------------------------------------------------------
505 // This function computes the dE/dx for pions, kaons, protons and electrons,
506 // in the [pT,eta] bins.
507 // Input file is CovMatrix_AllEvts.root.
508 //-----------------------------------------------------------------------------
510 gStyle->SetOptStat(0);
511 gStyle->SetOptFit(10001);
513 const char *part="PIONS";
517 // create a chain with compared tracks
518 TChain *cmptrkchain = new ("cmptrktree");
519 cmptrkchain.Add("CovMatrix_AllEvts.root");
520 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
521 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
522 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
526 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
527 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
530 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
531 Int_t entries = (Int_t)cmptrktree->GetEntries();
532 cerr<<" Number of entries: "<<entries<<endl;
534 InitializeKineGrid("DB");
535 InitializeKineGrid("dEdx");
562 const Int_t knTotBins = fDBgrid->GetTotBins();
564 cerr<<" Fit bins: "<<knTotBins<<endl;
567 Int_t *n = new Int_t[knTotBins];
568 Double_t *p = new Double_t[knTotBins];
569 Double_t *ep = new Double_t[knTotBins];
570 Double_t *mean = new Double_t[knTotBins];
571 Double_t *sigma = new Double_t[knTotBins];
573 for(Int_t l=0; l<knTotBins; l++) {
574 n[l] = 1; // set to 1 to avoid divisions by 0
575 p[l] = mean[l] = sigma[l] = ep[l] = 0.;
578 // loop on chain entries for the mean
579 for(Int_t l=0; l<entries; l++) {
580 cmptrktree->GetEvent(l);
581 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
582 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
584 mean[bin] += cmptrk.dEdx;
586 } // loop on chain entries
588 for(Int_t l=0; l<knTotBins; l++) {
591 n[l] = 1; // set to 1 to avoid divisions by 0
594 // loop on chain entries for the sigma
595 for(Int_t l=0; l<entries; l++) {
596 cmptrktree->GetEvent(l);
597 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
598 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
599 if(cmptrk.p<1. && TMath::Abs(cmptrk.p-p[bin])>0.025) continue;
601 sigma[bin] += (cmptrk.dEdx-mean[bin])*(cmptrk.dEdx-mean[bin]);
602 } // loop on chain entries
604 for(Int_t l=0; l<knTotBins; l++) {
605 sigma[l] = TMath::Sqrt(sigma[l]/n[l]);
609 TCanvas *canv = new TCanvas("canv","dEdx",0,0,900,700);
611 // create the graph for dEdx vs p
612 TGraphErrors *gr = new TGraphErrors(knTotBins,p,mean,ep,sigma);
613 TString title(" : dE/dx vs momentum"); title.Prepend(part);
614 TH2F *frame = new TH2F("frame1",title.Data(),2,0.1,50,2,0,ymax);
615 frame->SetXTitle("p [GeV/c]");
616 frame->SetYTitle("dE/dx [a.u.]");
623 for(Int_t i=0; i<knTotBins; i++) {
624 fdEdxMeanPi.SetParam(i,mean[i]);
625 fdEdxRMSPi.SetParam(i,sigma[i]);
629 for(Int_t i=0; i<knTotBins; i++) {
630 fdEdxMeanKa.SetParam(i,mean[i]);
631 fdEdxRMSKa.SetParam(i,sigma[i]);
635 for(Int_t i=0; i<knTotBins; i++) {
636 fdEdxMeanPr.SetParam(i,mean[i]);
637 fdEdxRMSPr.SetParam(i,sigma[i]);
641 for(Int_t i=0; i<knTotBins; i++) {
642 fdEdxMeanEl.SetParam(i,mean[i]);
643 fdEdxRMSEl.SetParam(i,sigma[i]);
647 for(Int_t i=0; i<knTotBins; i++) {
648 fdEdxMeanMu.SetParam(i,mean[i]);
649 fdEdxRMSMu.SetParam(i,sigma[i]);
654 // write results to file
655 WritedEdx(outName,pdg);
665 //-----------------------------------------------------------------------------
666 void AliTPCtrackerParam::AnalyzePulls(const Char_t *outName) {
667 //-----------------------------------------------------------------------------
668 // This function computes the pulls for pions, kaons and electrons,
669 // in the [pT,eta] bins.
670 // Input file is CovMatrix_AllEvts.root.
671 // Output file is pulls.root.
672 //-----------------------------------------------------------------------------
675 // create a chain with compared tracks
676 TChain *cmptrkchain = new ("cmptrktree");
677 cmptrkchain.Add("CovMatrix_AllEvts.root");
678 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
679 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
680 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
684 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
685 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
688 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
689 Int_t entries = (Int_t)cmptrktree->GetEntries();
690 cerr<<" Number of entries: "<<entries<<endl;
693 Char_t hname[100], htitle[100];
696 AliTPCkineGrid pulls[5];
697 TH1F *hDum = new TH1F("name","title",100,-7.,7.);
698 TF1 *g = new TF1("g","gaus");
700 InitializeKineGrid("pulls");
701 InitializeKineGrid("DB");
705 // loop on the particles Pi,Ka,Pr,El,Mu
706 for(Int_t part=0; part<5; part++) {
711 cerr<<" Processing pions ...\n";
715 cerr<<" Processing kaons ...\n";
719 cerr<<" Processing protons ...\n";
723 cerr<<" Processing electrons ...\n";
727 cerr<<" Processing muons ...\n";
731 SetParticle(thisPdg);
733 for(Int_t i=0;i<5;i++) {
734 pulls[i].~AliTPCkineGrid();
735 new(&pulls[i]) AliTPCkineGrid(*(fPulls+i));
737 nTotBins = fDBgrid->GetTotBins();
738 cerr<<"nTotBins = "<<nTotBins<<endl;
740 // create histograms for the all the bins
747 hPulls0 = new TH1F[nTotBins];
748 hPulls1 = new TH1F[nTotBins];
749 hPulls2 = new TH1F[nTotBins];
750 hPulls3 = new TH1F[nTotBins];
751 hPulls4 = new TH1F[nTotBins];
754 for(Int_t i=0; i<nTotBins; i++) {
755 sprintf(hname,"hPulls0%d",i);
756 sprintf(htitle,"P0 pulls for bin %d",i);
757 hDum->SetName(hname); hDum->SetTitle(htitle);
759 sprintf(hname,"hPulls1%d",i);
760 sprintf(htitle,"P1 pulls for bin %d",i);
761 hDum->SetName(hname); hDum->SetTitle(htitle);
763 sprintf(hname,"hPulls2%d",i);
764 sprintf(htitle,"P2 pulls for bin %d",i);
765 hDum->SetName(hname); hDum->SetTitle(htitle);
767 sprintf(hname,"hPulls3%d",i);
768 sprintf(htitle,"P3 pulls for bin %d",i);
769 hDum->SetName(hname); hDum->SetTitle(htitle);
771 sprintf(hname,"hPulls4%d",i);
772 sprintf(htitle,"P4 pulls for bin %d",i);
773 hDum->SetName(hname); hDum->SetTitle(htitle);
777 // loop on chain entries
778 for(Int_t i=0; i<entries; i++) {
779 cmptrktree->GetEvent(i);
780 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
781 // fill histograms with the pulls
782 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
783 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
784 hPulls0[bin].Fill(cmptrk.dP0/TMath::Sqrt(cmptrk.c00));
785 hPulls1[bin].Fill(cmptrk.dP1/TMath::Sqrt(cmptrk.c11));
786 hPulls2[bin].Fill(cmptrk.dP2/TMath::Sqrt(cmptrk.c22));
787 hPulls3[bin].Fill(cmptrk.dP3/TMath::Sqrt(cmptrk.c33));
788 hPulls4[bin].Fill(cmptrk.dP4/TMath::Sqrt(cmptrk.c44));
789 } // loop on chain entries
791 // compute the sigma of the distributions
792 for(Int_t i=0; i<nTotBins; i++) {
793 if(hPulls0[i].GetEntries()>10) {
794 g->SetRange(-3.*hPulls0[i].GetRMS(),3.*hPulls0[i].GetRMS());
795 hPulls0[i].Fit("g","R,Q,N");
796 pulls[0].SetParam(i,g->GetParameter(2));
797 } else pulls[0].SetParam(i,-1.);
798 if(hPulls1[i].GetEntries()>10) {
799 g->SetRange(-3.*hPulls1[i].GetRMS(),3.*hPulls1[i].GetRMS());
800 hPulls1[i].Fit("g","R,Q,N");
801 pulls[1].SetParam(i,g->GetParameter(2));
802 } else pulls[1].SetParam(i,-1.);
803 if(hPulls2[i].GetEntries()>10) {
804 g->SetRange(-3.*hPulls2[i].GetRMS(),3.*hPulls2[i].GetRMS());
805 hPulls2[i].Fit("g","R,Q,N");
806 pulls[2].SetParam(i,g->GetParameter(2));
807 } else pulls[2].SetParam(i,-1.);
808 if(hPulls3[i].GetEntries()>10) {
809 g->SetRange(-3.*hPulls3[i].GetRMS(),3.*hPulls3[i].GetRMS());
810 hPulls3[i].Fit("g","R,Q,N");
811 pulls[3].SetParam(i,g->GetParameter(2));
812 } else pulls[3].SetParam(i,-1.);
813 if(hPulls4[i].GetEntries()>10) {
814 g->SetRange(-3.*hPulls4[i].GetRMS(),3.*hPulls4[i].GetRMS());
815 hPulls4[i].Fit("g","R,Q,N");
816 pulls[4].SetParam(i,g->GetParameter(2));
817 } else pulls[4].SetParam(i,-1.);
823 for(Int_t i=0;i<5;i++) {
824 fPullsPi[i].~AliTPCkineGrid();
825 new(&fPullsPi[i]) AliTPCkineGrid(pulls[i]);
829 for(Int_t i=0;i<5;i++) {
830 fPullsKa[i].~AliTPCkineGrid();
831 new(&fPullsKa[i]) AliTPCkineGrid(pulls[i]);
835 for(Int_t i=0;i<5;i++) {
836 fPullsPr[i].~AliTPCkineGrid();
837 new(&fPullsPr[i]) AliTPCkineGrid(pulls[i]);
841 for(Int_t i=0;i<5;i++) {
842 fPullsEl[i].~AliTPCkineGrid();
843 new(&fPullsEl[i]) AliTPCkineGrid(pulls[i]);
847 for(Int_t i=0;i<5;i++) {
848 fPullsMu[i].~AliTPCkineGrid();
849 new(&fPullsMu[i]) AliTPCkineGrid(pulls[i]);
850 //cerr<<" mu pulls "<<i<<" "<<fPullsMu[i].GetParam(0)<<endl;
861 } // loop on particle species
863 // write pulls to file
869 //-----------------------------------------------------------------------------
870 void AliTPCtrackerParam::AnalyzeResolutions(Int_t pdg) {
871 //-----------------------------------------------------------------------------
872 // This function computes the resolutions:
876 // as a function of Pt
877 // Input file is CovMatrix_AllEvts.root.
878 //-----------------------------------------------------------------------------
881 // create a chain with compared tracks
882 TChain *cmptrkchain = new ("cmptrktree");
883 cmptrkchain.Add("CovMatrix_AllEvts.root");
884 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
885 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
886 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
890 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
891 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
894 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
895 Int_t entries = (Int_t)cmptrktree->GetEntries();
896 cerr<<" Number of entries: "<<entries<<endl;
901 InitializeKineGrid("DB");
902 InitializeKineGrid("eff");
906 const Int_t knPtBins = fEff->GetPointsPt();
907 cerr<<"knPtBins = "<<knPtBins<<endl;
908 Double_t *dP0 = new Double_t[knPtBins];
909 Double_t *dP4 = new Double_t[knPtBins];
910 Double_t *dPtToPt = new Double_t[knPtBins];
911 Double_t *pt = new Double_t[knPtBins];
912 fEff->GetArrayPt(pt);
915 TH1F *hDumP0 = new TH1F("nameP0","dy",100,-0.3,0.3);
916 TH1F *hDumP4 = new TH1F("nameP4","dC",100,-0.0005,0.0005);
917 TH1F *hDumPt = new TH1F("namePt","dp_{T}/p_{T}",100,-0.5,0.5);
919 TF1 *g = new TF1("g","gaus");
921 // create histograms for the all the bins
926 hP0 = new TH1F[knPtBins];
927 hP4 = new TH1F[knPtBins];
928 hPt = new TH1F[knPtBins];
930 for(Int_t i=0; i<knPtBins; i++) {
936 // loop on chain entries
937 for(Int_t i=0; i<entries; i++) {
938 cmptrktree->GetEvent(i);
939 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
940 // fill histograms with the residuals
941 bin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
942 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
943 hP0[bin].Fill(cmptrk.dP0);
944 hP4[bin].Fill(cmptrk.dP4);
945 hPt[bin].Fill(cmptrk.dpt/cmptrk.pt);
946 } // loop on chain entries
949 TCanvas *cP0res = new TCanvas("cP0res","cP0res",0,0,1200,700);
951 TCanvas *cP4res = new TCanvas("cP4res","cP4res",0,0,1200,700);
953 TCanvas *cPtres = new TCanvas("cPtres","cPtres",0,0,1200,700);
957 for(Int_t i=0; i<knPtBins; i++) {
958 cP0res->cd(i+1); hP0[i].Draw();
959 cP4res->cd(i+1); hP4[i].Draw();
960 cPtres->cd(i+1); hPt[i].Draw();
964 // compute the sigma of the distributions
965 for(Int_t i=0; i<knPtBins; i++) {
966 if(hP0[i].GetEntries()>10) {
967 g->SetRange(-3.*hP0[i].GetRMS(),3.*hP0[i].GetRMS());
968 hP0[i].Fit("g","R,Q,N");
969 dP0[i] = g->GetParameter(2);
971 if(hP4[i].GetEntries()>10) {
972 g->SetRange(-3.*hP4[i].GetRMS(),3.*hP4[i].GetRMS());
973 hP4[i].Fit("g","R,Q,N");
974 dP4[i] = g->GetParameter(2);
976 if(hPt[i].GetEntries()>10) {
977 g->SetRange(-3.*hPt[i].GetRMS(),3.*hPt[i].GetRMS());
978 hPt[i].Fit("g","R,Q,N");
979 dPtToPt[i] = 100.*g->GetParameter(2);
980 } else dPtToPt[i] = 0.;
984 TGraph *grdP0 = new TGraph(knPtBins,pt,dP0);
985 TGraph *grdP4 = new TGraph(knPtBins,pt,dP4);
986 TGraph *grdPtToPt = new TGraph(knPtBins,pt,dPtToPt);
988 grdP0->SetMarkerStyle(20); grdP0->SetMarkerColor(2); grdP0->SetMarkerSize(1.5);
989 grdP4->SetMarkerStyle(21); grdP4->SetMarkerColor(3); grdP4->SetMarkerSize(1.5);
990 grdPtToPt->SetMarkerStyle(22); grdPtToPt->SetMarkerColor(4); grdPtToPt->SetMarkerSize(1.5);
993 gStyle->SetOptStat(0);
994 TCanvas *c1 = new TCanvas("c1","dP0",0,0,900,700);
999 TH2F *frame1 = new TH2F("frame1","y resolution VS p_{T} in TPC",2,0.1,30,2,0,0.1);
1000 frame1->SetXTitle("p_{T} [GeV/c]");
1001 frame1->SetYTitle("#sigma(y) [cm]");
1006 TCanvas *c2 = new TCanvas("c2","dP4",0,0,900,700);
1011 TH2F *frame2 = new TH2F("frame2","C resolution VS p_{T} in TPC",2,0.1,30,2,0,0.0001);
1012 frame2->SetXTitle("p_{T} [GeV/c]");
1013 frame2->SetYTitle("#sigma(C) [1/cm]");
1017 TCanvas *c3 = new TCanvas("c3","dPtToPt",0,0,900,700);
1023 TH2F *frame3 = new TH2F("frame3","Relative p_{T} resolution VS p_{T} in TPC",2,0.1,30,2,0.1,30.);
1024 frame3->SetXTitle("p_{T} [GeV/c]");
1025 frame3->SetYTitle("dp_{T}/p_{T} (%)");
1027 grdPtToPt->Draw("P");
1042 //-----------------------------------------------------------------------------
1043 void AliTPCtrackerParam::BuildTrack(AliTPCseedGeant *s,Int_t ch) {
1044 //-----------------------------------------------------------------------------
1045 // This function uses GEANT info to set true track parameters
1046 //-----------------------------------------------------------------------------
1047 Double_t xref = s->GetXL();
1048 Double_t xx[5],cc[15];
1049 cc[0]=cc[2]=cc[5]=cc[9]=cc[14]=10.;
1050 cc[1]=cc[3]=cc[4]=cc[6]=cc[7]=cc[8]=cc[10]=cc[11]=cc[12]=cc[13]=0.;
1053 TVector3 bfield(0.,0.,-fBz);
1056 // radius [cm] of track projection in (x,y)
1057 Double_t rho = s->GetPt()*100./0.299792458/TMath::Abs(bfield.Z());
1058 // center of track projection in local reference frame
1062 // position (local) and momentum (local) at the seed
1063 // in the bending plane (z=0)
1064 sPos.SetXYZ(s->GetXL(),s->GetYL(),0.);
1065 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.);
1066 TVector3 vrho = sMom.Cross(bfield);
1070 TVector3 vcenter = sPos+vrho;
1072 Double_t x0 = vcenter.X();
1074 // fX = xref X-coordinate of this track (reference plane)
1075 // fAlpha = Alpha Rotation angle the local (TPC sector)
1076 // fP0 = YL Y-coordinate of a track
1077 // fP1 = ZG Z-coordinate of a track
1078 // fP2 = sin(phi) sine of the (local) azimuthal angle
1079 // fP3 = Tgl tangent of the track momentum dip angle
1080 // fP4 = C track curvature
1083 xx[2] = ch/rho*(xref-x0);
1084 xx[3] = s->GetPz()/s->GetPt();
1087 // create the object AliTPCtrack
1088 AliTPCtrack track(xref,s->GetAlpha(),xx,cc,0);
1089 new(&fTrack) AliTPCtrack(track);
1093 //-----------------------------------------------------------------------------
1094 void AliTPCtrackerParam::CompareTPCtracks(
1096 const Char_t* galiceName,
1097 const Char_t* trkGeaName,
1098 const Char_t* trkKalName,
1099 const Char_t* covmatName,
1100 const Char_t* tpceffasciiName,
1101 const Char_t* tpceffrootName) {
1102 //-----------------------------------------------------------------------------
1103 // This function compares tracks from TPC Kalman Filter V2 with
1104 // geant tracks at TPC 1st hit. It gives:
1105 // - a tree with Kalman cov. matrix elements, resolutions, dEdx
1106 // - the efficiencies as a function of particle type, pT, eta
1107 //-----------------------------------------------------------------------------
1109 TFile *kalFile = TFile::Open(trkKalName);
1110 TFile *geaFile = TFile::Open(trkGeaName);
1111 TFile *galiceFile = TFile::Open(galiceName);
1113 // get the AliRun object
1114 AliRun *gAlice = (AliRun*)galiceFile->Get("gAlice");
1117 // create the tree for comparison results
1119 TTree *cmptrktree = new TTree("cmptrktree","results of track comparison");
1120 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");
1122 InitializeKineGrid("eff");
1123 InitializeKineGrid("DB");
1124 Int_t effBins = fEffPi.GetTotPoints();
1125 Int_t effBinsPt = fEffPi.GetPointsPt();
1126 Double_t *pt = new Double_t[effBinsPt];
1127 fEffPi.GetArrayPt(pt);
1134 Int_t pi=0,ka=0,mu=0,el=0,pr=0;
1135 Int_t *geaPi = new Int_t[effBins];
1136 Int_t *geaKa = new Int_t[effBins];
1137 Int_t *geaPr = new Int_t[effBins];
1138 Int_t *geaEl = new Int_t[effBins];
1139 Int_t *geaMu = new Int_t[effBins];
1140 Int_t *kalPi = new Int_t[effBins];
1141 Int_t *kalKa = new Int_t[effBins];
1142 Int_t *kalPr = new Int_t[effBins];
1143 Int_t *kalEl = new Int_t[effBins];
1144 Int_t *kalMu = new Int_t[effBins];
1145 Float_t *effPi = new Float_t[effBins];
1146 Float_t *effKa = new Float_t[effBins];
1147 Float_t *effPr = new Float_t[effBins];
1148 Float_t *effEl = new Float_t[effBins];
1149 Float_t *effMu = new Float_t[effBins];
1151 for(Int_t j=0; j<effBins; j++) {
1152 geaPi[j]=geaKa[j]=geaPr[j]=geaEl[j]=geaMu[j]=0;
1153 kalPi[j]=kalKa[j]=kalPr[j]=kalEl[j]=kalMu[j]=0;
1154 effPi[j]=effKa[j]=effPr[j]=effEl[j]=effMu[j]=-1.;
1159 // loop on events in file
1160 for(Int_t evt=0; evt<nEvents; evt++) {
1161 cerr<<"\n --- Reading tracks for event "<<evt<<" ---\n\n";
1162 sprintf(tname,"TreeT_TPC_%d",evt);
1164 // particles from TreeK
1165 const Int_t knparticles = gAlice->GetEvent(evt);
1167 Int_t *kalLab = new Int_t[knparticles];
1168 for(Int_t i=0; i<knparticles; i++) kalLab[i] = -1;
1171 // tracks from Kalman
1172 TTree *kaltree=(TTree*)kalFile->Get(tname);
1173 if(!kaltree) continue;
1174 AliTPCtrack *kaltrack=new AliTPCtrack;
1175 kaltree->SetBranchAddress("tracks",&kaltrack);
1176 Int_t kalEntries = (Int_t)kaltree->GetEntries();
1178 // tracks from 1st hit
1179 TTree *geatree=(TTree*)geaFile->Get(tname);
1180 if(!geatree) continue;
1181 AliTPCtrack *geatrack=new AliTPCtrack;
1182 geatree->SetBranchAddress("tracks",&geatrack);
1183 Int_t geaEntries = (Int_t)geatree->GetEntries();
1185 cerr<<"+++\n+++ Number of tracks: TPC Kalman = "<<kalEntries<<endl<<"+++ TPC 1st hit = "<<geaEntries<<endl<<"+++\n";
1187 // set pointers for TPC tracks:
1188 // the entry number of the track labelled l is stored in kalLab[l]
1189 Int_t fake=0,mult=0;
1190 for (Int_t j=0; j<kalEntries; j++) {
1191 kaltree->GetEvent(j);
1192 if(kaltrack->GetLabel()>=0) {
1193 if(kalLab[kaltrack->GetLabel()]!=-1) mult++;
1194 kalLab[kaltrack->GetLabel()] = j;
1199 cerr<<"+++ Number of fake tracks in TPC Kalman: "<<fake<<endl;
1200 cerr<<"+++ Number of multiply found tracks in TPC Kalman: "<<mult<<endl;
1203 // Read the labels of the seeds
1206 Bool_t *hasSeed = new Bool_t[knparticles];
1207 for(Int_t i=0; i<knparticles; i++) hasSeed[i] = kFALSE;
1208 sprintf(sname,"seedLabels.%d.dat",evt);
1209 FILE *seedFile = fopen(sname,"r");
1211 ncol = fscanf(seedFile,"%d",&sLabel);
1213 if(sLabel>0) hasSeed[sLabel]=kTRUE;
1218 cerr<<"Doing track comparison...\n";
1219 // loop on tracks at 1st hit
1220 for(Int_t j=0; j<geaEntries; j++) {
1221 geatree->GetEvent(j);
1223 label = geatrack->GetLabel();
1224 part = (TParticle*)gAlice->GetMCApp()->Particle(label);
1226 // use only injected tracks with fixed values of pT
1227 ptgener = part->Pt();
1229 for(Int_t l=0; l<fEffPi.GetPointsPt(); l++) {
1230 if(TMath::Abs(ptgener-pt[l])<0.01) usethis = kTRUE;
1232 if(!usethis) continue;
1234 // check if it has the seed
1235 //if(!hasSeed[label]) continue;
1238 // check if track is entirely contained in a TPC sector
1239 Bool_t out = kFALSE;
1240 for(Int_t l=0; l<10; l++) {
1241 Double_t x = 85. + (250.-85.)*(Double_t)l/9.;
1242 //cerr<<"x "<<x<<" X "<<geatrack->GetX()<<endl;
1243 Double_t y = geatrack->GetY() + (
1244 TMath::Sqrt(1-(geatrack->GetC()*geatrack->GetX()-geatrack->GetEta())*
1245 (geatrack->GetC()*geatrack->GetX()-geatrack->GetEta()))
1246 -TMath::Sqrt(1-(geatrack->GetC()*x-geatrack->GetEta())*
1247 (geatrack->GetC()*x-geatrack->GetEta()))
1250 //cerr<<"y "<<y<<" Y "<<geatrack->GetY()<<endl;
1251 if(y > 0.8*x*TMath::Tan(TMath::Pi()/18)) { out = kTRUE; break; }
1256 cmptrk.pdg = part->GetPdgCode();
1257 cmptrk.eta = part->Eta();
1258 cmptrk.r = TMath::Sqrt(part->Vx()*part->Vx()+part->Vy()*part->Vy());
1260 cmptrk.pt = 1/TMath::Abs(geatrack->Get1Pt());
1261 cmptrk.cosl = TMath::Cos(TMath::ATan(geatrack->GetTgl()));
1262 cmptrk.p = cmptrk.pt/cmptrk.cosl;
1265 bin = fDBgridPi.GetBin(cmptrk.pt,cmptrk.eta);
1267 if(abs(cmptrk.pdg)==211) geaPi[bin]++;
1268 if(abs(cmptrk.pdg)==321) geaKa[bin]++;
1269 if(abs(cmptrk.pdg)==2212) geaPr[bin]++;
1270 if(abs(cmptrk.pdg)==11) geaEl[bin]++;
1271 if(abs(cmptrk.pdg)==13) geaMu[bin]++;
1274 // check if there is the corresponding track in the TPC kalman and get it
1275 if(kalLab[label]==-1) continue;
1276 kaltree->GetEvent(kalLab[label]);
1278 // and go on only if it has xref = 84.57 cm (inner pad row)
1279 if(kaltrack->GetX()>90.) continue;
1281 if(abs(cmptrk.pdg)==211) { kalPi[bin]++; pi++; }
1282 if(abs(cmptrk.pdg)==321) { kalKa[bin]++; ka++; }
1283 if(abs(cmptrk.pdg)==2212) { kalPr[bin]++; pr++; }
1284 if(abs(cmptrk.pdg)==11) { kalEl[bin]++; el++; }
1285 if(abs(cmptrk.pdg)==13) { kalMu[bin]++; mu++; }
1287 kaltrack->PropagateTo(geatrack->GetX(),1.e-9,0.);
1289 cmptrk.dEdx = kaltrack->GetdEdx();
1291 // compute errors on parameters
1292 dAlpha = kaltrack->GetAlpha()-geatrack->GetAlpha();
1293 if(TMath::Abs(dAlpha)>0.1) { cerr<<" ! WRONG SECTOR !\n"; continue; }
1295 cmptrk.dP0 = kaltrack->GetY()-geatrack->GetY();
1296 cmptrk.dP1 = kaltrack->GetZ()-geatrack->GetZ();
1297 cmptrk.dP2 = kaltrack->GetSnp()-geatrack->GetSnp();
1298 cmptrk.dP3 = kaltrack->GetTgl()-geatrack->GetTgl();
1299 cmptrk.dP4 = kaltrack->GetC()-geatrack->GetC();
1300 cmptrk.dpt = 1/kaltrack->Get1Pt()-1/geatrack->Get1Pt();
1302 // get covariance matrix
1303 // beware: lines 3 and 4 in the matrix are inverted!
1304 //kaltrack->GetCovariance(cc);
1306 cmptrk.c00 = kaltrack->GetSigmaY2();
1307 cmptrk.c10 = kaltrack->GetSigmaZY();
1308 cmptrk.c11 = kaltrack->GetSigmaZ2();
1309 cmptrk.c20 = kaltrack->GetSigmaSnpY();
1310 cmptrk.c21 = kaltrack->GetSigmaSnpY();
1311 cmptrk.c22 = kaltrack->GetSigmaSnp2();
1312 cmptrk.c30 = kaltrack->GetSigmaTglY();
1313 cmptrk.c31 = kaltrack->GetSigmaTglZ();
1314 cmptrk.c32 = kaltrack->GetSigmaTglSnp();
1315 cmptrk.c33 = kaltrack->GetSigmaTgl2();
1316 cmptrk.c40 = kaltrack->GetSigma1PtY();
1317 cmptrk.c41 = kaltrack->GetSigma1PtZ();
1318 cmptrk.c42 = kaltrack->GetSigma1PtSnp();
1319 cmptrk.c43 = kaltrack->GetSigma1PtTgl();
1320 cmptrk.c44 = kaltrack->GetSigma1Pt2();
1325 } // loop on tracks at TPC 1st hit
1328 //delete [] hasSeed;
1330 } // end loop on events in file
1333 cerr<<"+++\n+++ Number of compared tracks: "<<pi+ka+el+mu+pr<<endl;
1334 cerr<<"+++ Pions: "<<pi<<", Kaons: "<<ka<<", Protons : "<<pr<<", Electrons: "<<el<<", Muons: "<<mu<<endl;
1337 // Write tree to file
1338 TFile *outfile = new TFile(covmatName,"recreate");
1339 cmptrktree->Write();
1343 // Write efficiencies to ascii file
1344 FILE *effFile = fopen(tpceffasciiName,"w");
1345 //fprintf(effFile,"%d\n",kalEntries);
1346 for(Int_t j=0; j<effBins; j++) {
1347 if(geaPi[j]>=100) effPi[j]=(Float_t)kalPi[j]/geaPi[j];
1348 if(geaKa[j]>=100) effKa[j]=(Float_t)kalKa[j]/geaKa[j];
1349 if(geaPr[j]>=100) effPr[j]=(Float_t)kalPr[j]/geaPr[j];
1350 if(geaEl[j]>=500) effEl[j]=(Float_t)kalEl[j]/geaEl[j];
1351 if(geaMu[j]>=100) effMu[j]=(Float_t)kalMu[j]/geaMu[j];
1352 fprintf(effFile,"%f %f %f %f %f\n",effPi[j],effKa[j],effPr[j],effEl[j],effMu[j]);
1355 for(Int_t j=0; j<effBins; j++) {
1356 fprintf(effFile,"%d %d %d %d %d\n",geaPi[j],geaKa[j],geaPr[j],geaEl[j],geaMu[j]);
1358 for(Int_t j=0; j<effBins; j++) {
1359 fprintf(effFile,"%d %d %d %d %d\n",kalPi[j],kalKa[j],kalPr[j],kalEl[j],kalMu[j]);
1363 // Write efficiencies to root file
1364 for(Int_t j=0; j<effBins; j++) {
1365 fEffPi.SetParam(j,(Double_t)effPi[j]);
1366 fEffKa.SetParam(j,(Double_t)effKa[j]);
1367 fEffPr.SetParam(j,(Double_t)effPr[j]);
1368 fEffEl.SetParam(j,(Double_t)effEl[j]);
1369 fEffMu.SetParam(j,(Double_t)effMu[j]);
1371 WriteEffs(tpceffrootName);
1373 // delete AliRun object
1374 delete gAlice; gAlice=0;
1376 // close all input files
1379 galiceFile->Close();
1400 //-----------------------------------------------------------------------------
1401 void AliTPCtrackerParam::CookdEdx(Double_t pt,Double_t eta) {
1402 //-----------------------------------------------------------------------------
1403 // This function assigns the track a dE/dx and makes a rough PID
1404 //-----------------------------------------------------------------------------
1406 Double_t mean = fdEdxMean->GetValueAt(pt,eta);
1407 Double_t rms = fdEdxRMS->GetValueAt(pt,eta);
1409 Double_t dEdx = gRandom->Gaus(mean,rms);
1411 fTrack.SetdEdx(dEdx);
1413 AliTPCtrackParam t(fTrack);
1416 Double_t p = TMath::Sqrt(1.+t.GetTgl()*t.GetTgl())*pt;
1418 Double_t massPi = (Double_t)TDatabasePDG::Instance()->GetParticle(211)->Mass();
1419 Double_t massKa = (Double_t)TDatabasePDG::Instance()->GetParticle(321)->Mass();
1420 Double_t massPr = (Double_t)TDatabasePDG::Instance()->GetParticle(2212)->Mass();
1423 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1424 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1426 if (dEdx < 39.+ 12./p/p) {
1427 t.AssignMass(massKa); new(&fTrack) AliTPCtrack(t); return;
1429 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1433 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1434 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1436 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1439 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1441 //-----------------------------------------------------------------------------
1442 void AliTPCtrackerParam::CookTrack(Double_t pt,Double_t eta) {
1443 //-----------------------------------------------------------------------------
1444 // This function deals with covariance matrix and smearing
1445 //-----------------------------------------------------------------------------
1449 Double_t trkKine[1],trkRegPar[3];
1450 Double_t xref,alpha,xx[5],xxsm[5],cc[15];
1453 fCovTree->SetBranchAddress("matrix",&covmat);
1455 // get random entry from the tree
1456 treeEntries = (Int_t)fCovTree->GetEntries();
1457 fCovTree->GetEvent(gRandom->Integer(treeEntries));
1459 // get P and Cosl from track
1460 cosl = TMath::Cos(TMath::ATan(fTrack.GetTgl()));
1461 p = 1./TMath::Abs(fTrack.Get1Pt())/cosl;
1465 // get covariance matrix from regularized matrix
1466 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(0,l);
1467 cc[0] = covmat.c00*RegFunc(trkKine,trkRegPar);
1469 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(1,l);
1470 cc[2] = covmat.c11*RegFunc(trkKine,trkRegPar);
1471 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(2,l);
1472 cc[3] = covmat.c20*RegFunc(trkKine,trkRegPar);
1474 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(3,l);
1475 cc[5] = covmat.c22*RegFunc(trkKine,trkRegPar);
1477 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(4,l);
1478 cc[7] = covmat.c31*RegFunc(trkKine,trkRegPar);
1480 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(5,l);
1481 cc[9] = covmat.c33*RegFunc(trkKine,trkRegPar);
1482 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(6,l);
1483 cc[10]= covmat.c40*RegFunc(trkKine,trkRegPar);
1485 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(7,l);
1486 cc[12]= covmat.c42*RegFunc(trkKine,trkRegPar);
1488 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(8,l);
1489 cc[14]= covmat.c44*RegFunc(trkKine,trkRegPar);
1492 TMatrixD covMatSmear(5,5);
1493 covMatSmear = GetSmearingMatrix(cc,pt,eta);
1495 // get track original parameters
1496 xref =fTrack.GetX();
1497 alpha=fTrack.GetAlpha();
1498 xx[0]=fTrack.GetY();
1499 xx[1]=fTrack.GetZ();
1500 xx[2]=fTrack.GetSnp();
1501 xx[3]=fTrack.GetTgl();
1502 xx[4]=fTrack.GetC();
1504 // use smearing matrix to smear the original parameters
1506 SmearTrack(xx,xxsm,covMatSmear);
1508 AliTPCtrack track(xref,alpha,xxsm,cc,0);
1509 new(&fTrack) AliTPCtrack(track);
1513 //-----------------------------------------------------------------------------
1514 void AliTPCtrackerParam::DrawEffs(const Char_t* inName,Int_t pdg) {
1515 //-----------------------------------------------------------------------------
1516 // This function draws the TPC efficiencies in the [pT,eta] bins
1517 //-----------------------------------------------------------------------------
1522 const Int_t kn = fEff->GetPointsPt();
1523 Double_t *effsA = new Double_t[kn];
1524 Double_t *effsB = new Double_t[kn];
1525 Double_t *effsC = new Double_t[kn];
1526 Double_t *pt = new Double_t[kn];
1528 fEff->GetArrayPt(pt);
1529 for(Int_t i=0;i<kn;i++) {
1530 effsA[i] = fEff->GetParam(i,0);
1531 effsB[i] = fEff->GetParam(i,1);
1532 effsC[i] = fEff->GetParam(i,2);
1535 TGraph *grA = new TGraph(kn,pt,effsA);
1536 TGraph *grB = new TGraph(kn,pt,effsB);
1537 TGraph *grC = new TGraph(kn,pt,effsC);
1539 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1540 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1541 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1543 TString title("Distribution of the TPC efficiencies");
1546 title.Prepend("PIONS - ");
1549 title.Prepend("KAONS - ");
1552 title.Prepend("PROTONS - ");
1555 title.Prepend("ELECTRONS - ");
1558 title.Prepend("MUONS - ");
1563 gStyle->SetOptStat(0);
1564 TCanvas *c = new TCanvas("c","effs",0,0,900,700);
1569 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,1);
1570 frame->SetXTitle("p_{T} [GeV/c]");
1576 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1577 leg->AddEntry(grA,"|#eta|<0.3","p");
1578 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1579 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1580 leg->SetFillColor(0);
1590 //-----------------------------------------------------------------------------
1591 void AliTPCtrackerParam::DrawPulls(const Char_t* inName,Int_t pdg,
1593 //-----------------------------------------------------------------------------
1594 // This function draws the pulls in the [pT,eta] bins
1595 //-----------------------------------------------------------------------------
1600 const Int_t kn = (fPulls+par)->GetPointsPt();
1601 Double_t *pullsA = new Double_t[kn];
1602 Double_t *pullsB = new Double_t[kn];
1603 Double_t *pullsC = new Double_t[kn];
1604 Double_t *pt = new Double_t[kn];
1605 (fPulls+par)->GetArrayPt(pt);
1606 for(Int_t i=0;i<kn;i++) {
1607 pullsA[i] = (fPulls+par)->GetParam(i,0);
1608 pullsB[i] = (fPulls+par)->GetParam(i,1);
1609 pullsC[i] = (fPulls+par)->GetParam(i,2);
1612 TGraph *grA = new TGraph(kn,pt,pullsA);
1613 TGraph *grB = new TGraph(kn,pt,pullsB);
1614 TGraph *grC = new TGraph(kn,pt,pullsC);
1616 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1617 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1618 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1620 TString title("Distribution of the pulls: ");
1623 title.Prepend("PIONS - ");
1626 title.Prepend("KAONS - ");
1629 title.Prepend("PROTONS - ");
1632 title.Prepend("ELECTRONS - ");
1635 title.Prepend("MUONS - ");
1646 title.Append(" #eta");
1649 title.Append("tg #lambda");
1656 gStyle->SetOptStat(0);
1657 TCanvas *c = new TCanvas("c","pulls",0,0,900,700);
1662 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,2);
1663 frame->SetXTitle("p_{T} [GeV/c]");
1669 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1670 leg->AddEntry(grA,"|#eta|<0.3","p");
1671 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1672 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1673 leg->SetFillColor(0);
1683 //-----------------------------------------------------------------------------
1684 TMatrixD AliTPCtrackerParam::GetSmearingMatrix(Double_t* cc,Double_t pt,
1685 Double_t eta) const {
1686 //-----------------------------------------------------------------------------
1687 // This function stretches the covariance matrix according to the pulls
1688 //-----------------------------------------------------------------------------
1690 TMatrixD covMat(5,5);
1693 covMat(1,0)=cc[1]; covMat(0,1)=covMat(1,0);
1695 covMat(2,0)=cc[3]; covMat(0,2)=covMat(2,0);
1696 covMat(2,1)=cc[4]; covMat(1,2)=covMat(2,1);
1698 covMat(3,0)=cc[6]; covMat(0,3)=covMat(3,0);
1699 covMat(3,1)=cc[7]; covMat(1,3)=covMat(3,1);
1700 covMat(3,2)=cc[8]; covMat(2,3)=covMat(3,2);
1702 covMat(4,0)=cc[10]; covMat(0,4)=covMat(4,0);
1703 covMat(4,1)=cc[11]; covMat(1,4)=covMat(4,1);
1704 covMat(4,2)=cc[12]; covMat(2,4)=covMat(4,2);
1705 covMat(4,3)=cc[13]; covMat(3,4)=covMat(4,3);
1709 TMatrixD stretchMat(5,5);
1710 for(Int_t k=0;k<5;k++) {
1711 for(Int_t l=0;l<5;l++) {
1716 for(Int_t i=0;i<5;i++) {
1717 stretchMat(i,i) = (fPulls+i)->GetValueAt(pt,eta);
1718 if(stretchMat(i,i)==0.) stretchMat(i,i) = 1.;
1721 TMatrixD mat(stretchMat,TMatrixD::kMult,covMat);
1722 TMatrixD covMatSmear(mat,TMatrixD::kMult,stretchMat);
1726 //-----------------------------------------------------------------------------
1727 void AliTPCtrackerParam::InitializeKineGrid(Option_t* which) {
1728 //-----------------------------------------------------------------------------
1729 // This function initializes ([pt,eta] points) the data members AliTPCkineGrid
1730 // which = "DB" -> initialize fDBgrid... members
1731 // "eff" -> initialize fEff... members
1732 // "pulls" -> initialize fPulls... members
1733 // "dEdx" -> initialize fdEdx... members
1734 //-----------------------------------------------------------------------------
1736 const char *db = strstr(which,"DB");
1737 const char *eff = strstr(which,"eff");
1738 const char *pulls = strstr(which,"pulls");
1739 const char *dEdx = strstr(which,"dEdx");
1742 Int_t nEta=0, nPt=0;
1744 Double_t etaPoints[2] = {0.3,0.6};
1745 Double_t etaBins[3] = {0.15,0.45,0.75};
1747 Double_t ptPoints[9] = {0.4,0.6,0.8,1.2,1.7,3.,5.,8.,15.};
1748 Double_t ptBins[10] = {0.3,0.5,0.7,1.,1.5,2.,4.,6.,10.,20.};
1751 Double_t *eta=0,*pt=0;
1765 AliTPCkineGrid *dummy=0;
1768 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1769 new(&fDBgridPi) AliTPCkineGrid(*dummy);
1770 new(&fDBgridKa) AliTPCkineGrid(*dummy);
1771 new(&fDBgridPr) AliTPCkineGrid(*dummy);
1772 new(&fDBgridEl) AliTPCkineGrid(*dummy);
1773 new(&fDBgridMu) AliTPCkineGrid(*dummy);
1777 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1778 new(&fEffPi) AliTPCkineGrid(*dummy);
1779 new(&fEffKa) AliTPCkineGrid(*dummy);
1780 new(&fEffPr) AliTPCkineGrid(*dummy);
1781 new(&fEffEl) AliTPCkineGrid(*dummy);
1782 new(&fEffMu) AliTPCkineGrid(*dummy);
1786 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1787 for(Int_t i=0;i<5;i++) new(&fPullsPi[i]) AliTPCkineGrid(*dummy);
1788 for(Int_t i=0;i<5;i++) new(&fPullsKa[i]) AliTPCkineGrid(*dummy);
1789 for(Int_t i=0;i<5;i++) new(&fPullsPr[i]) AliTPCkineGrid(*dummy);
1790 for(Int_t i=0;i<5;i++) new(&fPullsEl[i]) AliTPCkineGrid(*dummy);
1791 for(Int_t i=0;i<5;i++) new(&fPullsMu[i]) AliTPCkineGrid(*dummy);
1795 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1796 new(&fdEdxMeanPi) AliTPCkineGrid(*dummy);
1797 new(&fdEdxRMSPi) AliTPCkineGrid(*dummy);
1798 new(&fdEdxMeanKa) AliTPCkineGrid(*dummy);
1799 new(&fdEdxRMSKa) AliTPCkineGrid(*dummy);
1800 new(&fdEdxMeanPr) AliTPCkineGrid(*dummy);
1801 new(&fdEdxRMSPr) AliTPCkineGrid(*dummy);
1802 new(&fdEdxMeanEl) AliTPCkineGrid(*dummy);
1803 new(&fdEdxRMSEl) AliTPCkineGrid(*dummy);
1804 new(&fdEdxMeanMu) AliTPCkineGrid(*dummy);
1805 new(&fdEdxRMSMu) AliTPCkineGrid(*dummy);
1811 //-----------------------------------------------------------------------------
1812 void AliTPCtrackerParam::MakeDataBase() {
1813 //-----------------------------------------------------------------------------
1814 // This function creates the DB file and store in it:
1815 // - TPC Efficiencies for pi,ka,pr,el,mu (AliTPCkineGrid class)
1816 // - Pulls for pi,ka,el (AliTPCkineGrid class)
1817 // - Regularization parameters for pi,ka,el (TMatrixD class)
1818 // - dE/dx parameterization for pi,ka,pr,el (AliTPCkineGrid class)
1819 // - Regularized cov. matrices for pi,ka,el (COVMATRIX structure)
1820 //-----------------------------------------------------------------------------
1822 // define some file names
1823 const char *effFile ="TPCeff.root";
1824 const char *pullsFile ="pulls.root";
1825 const char *regPiFile ="regPi.root";
1826 const char *regKaFile ="regKa.root";
1827 const char *regPrFile ="regPr.root";
1828 const char *regElFile ="regEl.root";
1829 const char *regMuFile ="regMu.root";
1830 const char *dEdxPiFile="dEdxPi.root";
1831 const char *dEdxKaFile="dEdxKa.root";
1832 const char *dEdxPrFile="dEdxPr.root";
1833 const char *dEdxElFile="dEdxEl.root";
1834 const char *dEdxMuFile="dEdxMu.root";
1835 const char *cmFile ="CovMatrix_AllEvts.root";
1837 Char_t *cmFile1 ="CovMatrix_AllEvts_1.root";
1838 Char_t *cmFile2 ="CovMatrix_AllEvts_2.root";
1839 Char_t *cmFile3 ="CovMatrix_AllEvts_3.root";
1842 // store the effieciencies
1844 WriteEffs(fDBfileName.Data());
1847 ReadPulls(pullsFile);
1848 WritePulls(fDBfileName.Data());
1850 //store the regularization parameters
1851 ReadRegParams(regPiFile,211);
1852 WriteRegParams(fDBfileName.Data(),211);
1853 ReadRegParams(regKaFile,321);
1854 WriteRegParams(fDBfileName.Data(),321);
1855 ReadRegParams(regPrFile,2212);
1856 WriteRegParams(fDBfileName.Data(),2212);
1857 ReadRegParams(regElFile,11);
1858 WriteRegParams(fDBfileName.Data(),11);
1859 ReadRegParams(regMuFile,13);
1860 WriteRegParams(fDBfileName.Data(),13);
1862 // store the dEdx parameters
1863 ReaddEdx(dEdxPiFile,211);
1864 WritedEdx(fDBfileName.Data(),211);
1865 ReaddEdx(dEdxKaFile,321);
1866 WritedEdx(fDBfileName.Data(),321);
1867 ReaddEdx(dEdxPrFile,2212);
1868 WritedEdx(fDBfileName.Data(),2212);
1869 ReaddEdx(dEdxElFile,11);
1870 WritedEdx(fDBfileName.Data(),11);
1871 ReaddEdx(dEdxMuFile,13);
1872 WritedEdx(fDBfileName.Data(),13);
1876 // store the regularized covariance matrices
1878 InitializeKineGrid("DB");
1880 const Int_t knBinsPi = fDBgridPi.GetTotBins();
1881 const Int_t knBinsKa = fDBgridKa.GetTotBins();
1882 const Int_t knBinsPr = fDBgridPr.GetTotBins();
1883 const Int_t knBinsEl = fDBgridEl.GetTotBins();
1884 const Int_t knBinsMu = fDBgridMu.GetTotBins();
1887 // create the trees for cov. matrices
1889 TTree *covTreePi1 = NULL;
1890 covTreePi1 = new TTree[knBinsPi];
1892 TTree *covTreeKa1 = NULL;
1893 covTreeKa1 = new TTree[knBinsKa];
1894 // trees for protons
1895 TTree *covTreePr1 = NULL;
1896 covTreePr1 = new TTree[knBinsPr];
1897 // trees for electrons
1898 TTree *covTreeEl1 = NULL;
1899 covTreeEl1 = new TTree[knBinsEl];
1901 TTree *covTreeMu1 = NULL;
1902 covTreeMu1 = new TTree[knBinsMu];
1904 Char_t hname[100], htitle[100];
1908 for(Int_t i=0; i<knBinsPi; i++) {
1909 sprintf(hname,"CovTreePi_bin%d",i);
1910 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1911 covTreePi1[i].SetName(hname); covTreePi1[i].SetTitle(htitle);
1912 covTreePi1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",5000000);
1914 for(Int_t i=0; i<knBinsKa; i++) {
1915 sprintf(hname,"CovTreeKa_bin%d",i);
1916 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1917 covTreeKa1[i].SetName(hname); covTreeKa1[i].SetTitle(htitle);
1918 covTreeKa1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1920 for(Int_t i=0; i<knBinsPr; i++) {
1921 sprintf(hname,"CovTreePr_bin%d",i);
1922 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1923 covTreePr1[i].SetName(hname); covTreePr1[i].SetTitle(htitle);
1924 covTreePr1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1926 for(Int_t i=0; i<knBinsEl; i++) {
1927 sprintf(hname,"CovTreeEl_bin%d",i);
1928 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1929 covTreeEl1[i].SetName(hname); covTreeEl1[i].SetTitle(htitle);
1930 covTreeEl1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1932 for(Int_t i=0; i<knBinsMu; i++) {
1933 sprintf(hname,"CovTreeMu_bin%d",i);
1934 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1935 covTreeMu1[i].SetName(hname); covTreeMu1[i].SetTitle(htitle);
1936 covTreeMu1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1940 // create the chain with the compared tracks
1941 TChain *cmptrktree = new TChain("cmptrktree");
1942 cmptrkchain.Add(cmFile1);
1943 cmptrkchain.Add(cmFile2);
1944 cmptrkchain.Add(cmFile3);
1947 TFile *infile = TFile::Open(cmFile);
1948 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
1951 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
1952 Int_t entries = (Int_t)cmptrktree->GetEntries();
1953 cerr<<" Number of entries: "<<entries<<endl;
1955 Int_t trkPdg,trkBin;
1956 Double_t trkKine[1],trkRegPar[3];
1957 Int_t *nPerBinPi = new Int_t[knBinsPi];
1958 for(Int_t k=0;k<knBinsPi;k++) nPerBinPi[k]=0;
1959 Int_t *nPerBinKa = new Int_t[knBinsKa];
1960 for(Int_t k=0;k<knBinsKa;k++) nPerBinKa[k]=0;
1961 Int_t *nPerBinMu = new Int_t[knBinsMu];
1962 for(Int_t k=0;k<knBinsMu;k++) nPerBinMu[k]=0;
1963 Int_t *nPerBinEl = new Int_t[knBinsEl];
1964 for(Int_t k=0;k<knBinsEl;k++) nPerBinEl[k]=0;
1965 Int_t *nPerBinPr = new Int_t[knBinsPr];
1966 for(Int_t k=0;k<knBinsPr;k++) nPerBinPr[k]=0;
1968 // loop on chain entries
1969 for(Int_t l=0; l<entries; l++) {
1970 if(l % 10000 == 0) cerr<<"--- Processing track "<<l<<" of "<<entries<<" ---"<<endl;
1972 cmptrktree->GetEvent(l);
1974 trkPdg = TMath::Abs(cmptrk.pdg);
1975 // use only pions, kaons, protons, electrons, muons
1976 if(trkPdg!=211 && trkPdg!=321 && trkPdg!=2212 && trkPdg!=11 && trkPdg!=13) continue;
1977 SetParticle(trkPdg);
1978 trkBin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
1979 //cerr<<cmptrk.pt<<" "<<cmptrk.eta<<" "<<trkBin<<endl;
1981 if(trkPdg==211 && nPerBinPi[trkBin]>=5000) continue;
1982 if(trkPdg==321 && nPerBinKa[trkBin]>=5000) continue;
1983 if(trkPdg==2212 && nPerBinPr[trkBin]>=5000) continue;
1984 if(trkPdg==11 && nPerBinEl[trkBin]>=5000) continue;
1985 if(trkPdg==13 && nPerBinMu[trkBin]>=5000) continue;
1987 trkKine[0] = cmptrk.p;
1989 // get regularized covariance matrix
1990 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(0,k);
1991 covmat.c00 = cmptrk.c00/RegFunc(trkKine,trkRegPar);
1992 covmat.c10 = cmptrk.c10;
1993 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(1,k);
1994 covmat.c11 = cmptrk.c11/RegFunc(trkKine,trkRegPar);
1995 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(2,k);
1996 covmat.c20 = cmptrk.c20/RegFunc(trkKine,trkRegPar);
1997 covmat.c21 = cmptrk.c21;
1998 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(3,k);
1999 covmat.c22 = cmptrk.c22/RegFunc(trkKine,trkRegPar);
2000 covmat.c30 = cmptrk.c30;
2001 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(4,k);
2002 covmat.c31 = cmptrk.c31/RegFunc(trkKine,trkRegPar);
2003 covmat.c32 = cmptrk.c32;
2004 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(5,k);
2005 covmat.c33 = cmptrk.c33/RegFunc(trkKine,trkRegPar);
2006 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(6,k);
2007 covmat.c40 = cmptrk.c40/RegFunc(trkKine,trkRegPar);
2008 covmat.c41 = cmptrk.c41;
2009 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(7,k);
2010 covmat.c42 = cmptrk.c42/RegFunc(trkKine,trkRegPar);
2011 covmat.c43 = cmptrk.c43;
2012 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(8,k);
2013 covmat.c44 = cmptrk.c44/RegFunc(trkKine,trkRegPar);
2018 covTreePi1[trkBin].Fill();
2019 nPerBinPi[trkBin]++;
2022 covTreeKa1[trkBin].Fill();
2023 nPerBinKa[trkBin]++;
2025 case 2212: // protons
2026 covTreePr1[trkBin].Fill();
2027 nPerBinPr[trkBin]++;
2029 case 11: // electrons
2030 covTreeEl1[trkBin].Fill();
2031 nPerBinEl[trkBin]++;
2034 covTreeMu1[trkBin].Fill();
2035 nPerBinMu[trkBin]++;
2038 } // loop on chain entries
2040 // store all trees the DB file
2041 TFile *dbfile = new TFile(fDBfileName.Data(),"update");
2042 dbfile->mkdir("CovMatrices");
2043 gDirectory->cd("/CovMatrices");
2044 gDirectory->mkdir("Pions");
2045 gDirectory->mkdir("Kaons");
2046 gDirectory->mkdir("Protons");
2047 gDirectory->mkdir("Electrons");
2048 gDirectory->mkdir("Muons");
2050 gDirectory->cd("/CovMatrices/Pions");
2051 fDBgridPi.SetName("DBgridPi"); fDBgridPi.Write();
2052 for(Int_t i=0;i<knBinsPi;i++) covTreePi1[i].Write();
2054 gDirectory->cd("/CovMatrices/Kaons");
2055 fDBgridKa.SetName("DBgridKa"); fDBgridKa.Write();
2056 for(Int_t i=0;i<knBinsKa;i++) covTreeKa1[i].Write();
2058 gDirectory->cd("/CovMatrices/Protons");
2059 fDBgridPr.SetName("DBgridPr"); fDBgridPr.Write();
2060 for(Int_t i=0;i<knBinsPr;i++) covTreePr1[i].Write();
2062 gDirectory->cd("/CovMatrices/Electrons");
2063 fDBgridEl.SetName("DBgridEl"); fDBgridEl.Write();
2064 for(Int_t i=0;i<knBinsEl;i++) covTreeEl1[i].Write();
2066 gDirectory->cd("/CovMatrices/Muons");
2067 fDBgridMu.SetName("DBgridMu"); fDBgridMu.Write();
2068 for(Int_t i=0;i<knBinsMu;i++) covTreeMu1[i].Write();
2071 delete [] nPerBinPi;
2072 delete [] nPerBinKa;
2073 delete [] nPerBinPr;
2074 delete [] nPerBinEl;
2075 delete [] nPerBinMu;
2079 //-----------------------------------------------------------------------------
2080 void AliTPCtrackerParam::MakeSeedsFromHits(AliTPC *tpc,TTree *th,
2081 TObjArray &seedArray) const {
2082 //-----------------------------------------------------------------------------
2083 // This function makes the seeds for tracks from the 1st hits in the TPC
2084 //-----------------------------------------------------------------------------
2086 Double_t xg,yg,zg,px,py,pz,pt;
2088 Int_t nTracks=(Int_t)th->GetEntries();
2090 cout<<"+++ Number of \"primary tracks\"(entries in TreeH): "<<nTracks<<
2093 AliTPChit *tpcHit=0;
2095 // loop over entries in TreeH
2096 for(Int_t l=0; l<nTracks; l++) {
2097 if(l%1000==0) cerr<<" --- Processing primary track "
2098 <<l<<" of "<<nTracks<<" ---\r";
2102 tpcHit=(AliTPChit*)tpc->FirstHit(-1);
2103 for( ; tpcHit; tpcHit=(AliTPChit*)tpc->NextHit() ) {
2104 if(tpcHit->fQ !=0.) continue;
2105 // Get particle momentum at hit
2106 px=tpcHit->X(); py=tpcHit->Y(); pz=tpcHit->Z();
2108 pt=TMath::Sqrt(px*px+py*py);
2109 // reject hits with Pt<mag*0.45 GeV/c
2110 if(pt<(fBz*0.45)) continue;
2113 label=tpcHit->Track();
2115 if((tpcHit=(AliTPChit*)tpc->NextHit())==0) break;
2116 if(tpcHit->fQ != 0.) continue;
2117 // Get global coordinates of hit
2118 xg=tpcHit->X(); yg=tpcHit->Y(); zg=tpcHit->Z();
2119 if(TMath::Sqrt(xg*xg+yg*yg)>90.) continue;
2122 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2124 // reject tracks which are not in the TPC acceptance
2125 if(!ioseed->InTPCAcceptance()) { delete ioseed; continue; }
2127 // put seed in array
2128 seedArray.AddLast(ioseed);
2131 } // loop over entries in TreeH
2135 //-----------------------------------------------------------------------------
2136 void AliTPCtrackerParam::MakeSeedsFromRefs(TTree *ttr,
2137 TObjArray &seedArray) const {
2138 //-----------------------------------------------------------------------------
2139 // This function makes the seeds for tracks from the track references
2140 //-----------------------------------------------------------------------------
2142 Double_t xg,yg,zg,px,py,pz,pt;
2146 TClonesArray *tkRefArray = new TClonesArray("AliTrackReference");
2148 TBranch *b =(TBranch*)ttr->GetBranch("TPC");
2149 if(!b) {cerr<<"TPC branch of TreeTR not found"<<endl; return; }
2150 b->SetAddress(&tkRefArray);
2151 Int_t nTkRef = (Int_t)b->GetEntries();
2152 cerr<<"+++ Number of entries in TreeTR(TPC): "<<nTkRef<<"\n";
2154 // loop on track references
2155 for(Int_t l=0; l<nTkRef; l++){
2156 //if(l%1000==0) cerr<<" --- Processing primary track "
2157 // <<l<<" of "<<nTkRef<<" ---\r";
2158 if(!b->GetEvent(l)) continue;
2159 nnn = tkRefArray->GetEntriesFast();
2161 if(nnn <= 0) continue;
2162 for(k=0; k<nnn; k++) {
2163 AliTrackReference *tkref = (AliTrackReference*)tkRefArray->UncheckedAt(k);
2171 label = tkref->GetTrack();
2173 pt=TMath::Sqrt(px*px+py*py);
2174 // reject hits with Pt<mag*0.45 GeV/c
2175 if(pt<(fBz*0.45)) continue;
2178 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2180 // reject if not at the inner part of TPC
2181 if(TMath::Abs(ioseed->GetXL()-83.8) > 0.2) {
2182 //cerr<<"not at TPC inner part: XL = "<<ioseed->GetXL()<<endl;
2183 delete ioseed; continue;
2186 // reject tracks which are not in the TPC acceptance
2187 if(!ioseed->InTPCAcceptance()) {
2188 delete ioseed; continue;
2191 // put seed in array
2192 seedArray.AddLast(ioseed);
2197 } // loop on track references
2204 //-----------------------------------------------------------------------------
2205 void AliTPCtrackerParam::MergeEvents(Int_t evFirst,Int_t evLast) {
2206 //-----------------------------------------------------------------------------
2207 // This function: 1) merges the files from track comparison
2208 // (beware: better no more than 100 events per file)
2209 // 2) computes the average TPC efficiencies
2210 //-----------------------------------------------------------------------------
2212 const char *outName="TPCeff.root";
2214 // merge files with tracks
2215 cerr<<" ******** MERGING FILES **********\n\n";
2217 // create the chain for the tree of compared tracks
2218 TChain ch1("cmptrktree");
2219 TChain ch2("cmptrktree");
2220 TChain ch3("cmptrktree");
2222 for(Int_t j=evFirst; j<=evLast; j++) {
2223 cerr<<"Processing event "<<j<<endl;
2225 TString covName("CovMatrix.");
2227 covName.Append(".root");
2229 if(gSystem->AccessPathName(covName.Data(),kFileExists)) continue;
2232 if(j<=100) ch1.Add(covName.Data());
2233 if(j>100 && j<=200) ch2.Add(covName.Data());
2234 if(j>200) ch3.Add(covName.Data());
2238 // merge chain in one file
2240 covOut = new TFile("CovMatrix_AllEvts_1.root","recreate");
2241 ch1.Merge(covOut,1000000000);
2244 covOut = new TFile("CovMatrix_AllEvts_2.root","recreate");
2245 ch2.Merge(covOut,1000000000);
2248 covOut = new TFile("CovMatrix_AllEvts_3.root","recreate");
2249 ch3.Merge(covOut,1000000000);
2255 cerr<<" ***** EFFICIENCIES ******\n\n";
2257 ReadEffs("TPCeff.1.root");
2259 Int_t n = fEffPi.GetTotPoints();
2260 Double_t *avEffPi = new Double_t[n];
2261 Double_t *avEffKa = new Double_t[n];
2262 Double_t *avEffPr = new Double_t[n];
2263 Double_t *avEffEl = new Double_t[n];
2264 Double_t *avEffMu = new Double_t[n];
2265 Int_t *evtsPi = new Int_t[n];
2266 Int_t *evtsKa = new Int_t[n];
2267 Int_t *evtsPr = new Int_t[n];
2268 Int_t *evtsEl = new Int_t[n];
2269 Int_t *evtsMu = new Int_t[n];
2271 for(Int_t j=0; j<n; j++) {
2272 avEffPi[j]=avEffKa[j]=avEffPr[j]=avEffEl[j]=avEffMu[j]=0.;
2273 evtsPi[j]=evtsKa[j]=evtsPr[j]=evtsEl[j]=evtsMu[j]=0;
2276 for(Int_t j=evFirst; j<=evLast; j++) {
2277 cerr<<"Processing event "<<j<<endl;
2279 TString effName("TPCeff.");
2281 effName.Append(".root");
2283 if(gSystem->AccessPathName(effName.Data(),kFileExists)) continue;
2285 ReadEffs(effName.Data());
2287 for(Int_t k=0; k<n; k++) {
2288 if(fEffPi.GetParam(k)>=0.) {avEffPi[k]+=fEffPi.GetParam(k); evtsPi[k]++;}
2289 if(fEffKa.GetParam(k)>=0.) {avEffKa[k]+=fEffKa.GetParam(k); evtsKa[k]++;}
2290 if(fEffPr.GetParam(k)>=0.) {avEffPr[k]+=fEffPr.GetParam(k); evtsPr[k]++;}
2291 if(fEffEl.GetParam(k)>=0.) {avEffEl[k]+=fEffEl.GetParam(k); evtsEl[k]++;}
2292 if(fEffMu.GetParam(k)>=0.) {avEffMu[k]+=fEffMu.GetParam(k); evtsMu[k]++;}
2297 // compute average efficiencies
2298 for(Int_t j=0; j<n; j++) {
2299 if(evtsPi[j]==0) evtsPi[j]++;
2300 fEffPi.SetParam(j,(Double_t)avEffPi[j]/evtsPi[j]);
2301 if(evtsKa[j]==0) evtsKa[j]++;
2302 fEffKa.SetParam(j,(Double_t)avEffKa[j]/evtsKa[j]);
2303 if(evtsPr[j]==0) evtsPr[j]++;
2304 fEffPr.SetParam(j,(Double_t)avEffPr[j]/evtsPr[j]);
2305 if(evtsEl[j]==0) evtsEl[j]++;
2306 fEffEl.SetParam(j,(Double_t)avEffEl[j]/evtsEl[j]);
2307 if(evtsMu[j]==0) evtsMu[j]++;
2308 fEffMu.SetParam(j,(Double_t)avEffMu[j]/evtsMu[j]);
2311 // write efficiencies to a file
2327 //-----------------------------------------------------------------------------
2328 Int_t AliTPCtrackerParam::ReadAllData(const Char_t* inName) {
2329 //-----------------------------------------------------------------------------
2330 // This function reads all parameters from the DB
2331 //-----------------------------------------------------------------------------
2333 if(!ReadEffs(inName)) return 0;
2334 if(!ReadPulls(inName)) return 0;
2335 if(!ReadRegParams(inName,211)) return 0;
2336 if(!ReadRegParams(inName,321)) return 0;
2337 if(!ReadRegParams(inName,2212)) return 0;
2338 if(!ReadRegParams(inName,11)) return 0;
2339 if(!ReadRegParams(inName,13)) return 0;
2340 if(!ReaddEdx(inName,211)) return 0;
2341 if(!ReaddEdx(inName,321)) return 0;
2342 if(!ReaddEdx(inName,2212)) return 0;
2343 if(!ReaddEdx(inName,11)) return 0;
2344 if(!ReaddEdx(inName,13)) return 0;
2345 if(!ReadDBgrid(inName)) return 0;
2346 if(!ReadCovTrees(inName)) return 0;
2350 //-----------------------------------------------------------------------------
2351 Int_t AliTPCtrackerParam::ReadCovTrees(const Char_t* inName) {
2352 //-----------------------------------------------------------------------------
2353 // This function reads the covariance matrix trees from the DB
2354 //-----------------------------------------------------------------------------
2356 if(gSystem->AccessPathName(inName,kFileExists)) {
2357 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2362 TFile *inFile = TFile::Open(inName);
2365 Int_t nBinsPi = fDBgridPi.GetTotBins();
2366 for(Int_t l=0; l<nBinsPi; l++) {
2367 str = "/CovMatrices/Pions/CovTreePi_bin";
2369 fCovTreePi[l] = (TTree*)inFile->Get(str.Data());
2370 //fCovTree = (TTree*)inFile->Get(str.Data());
2371 //fCovTreePi[l] = new TTree(*fCovTree);
2373 Int_t nBinsKa = fDBgridKa.GetTotBins();
2374 for(Int_t l=0; l<nBinsKa; l++) {
2375 str = "/CovMatrices/Kaons/CovTreeKa_bin";
2377 fCovTreeKa[l] = (TTree*)inFile->Get(str.Data());
2378 //fCovTree = (TTree*)inFile->Get(str.Data());
2379 //fCovTreeKa[l] = new TTree(*fCovTree);
2381 Int_t nBinsPr = fDBgridPr.GetTotBins();
2382 for(Int_t l=0; l<nBinsPr; l++) {
2384 str = "/CovMatrices/Pions/CovTreePi_bin";
2386 str = "/CovMatrices/Protons/CovTreePr_bin";
2389 fCovTreePr[l] = (TTree*)inFile->Get(str.Data());
2390 //fCovTree = (TTree*)inFile->Get(str.Data());
2391 //fCovTreePr[l] = new TTree(*fCovTree);
2393 Int_t nBinsEl = fDBgridEl.GetTotBins();
2394 for(Int_t l=0; l<nBinsEl; l++) {
2395 str = "/CovMatrices/Electrons/CovTreeEl_bin";
2397 fCovTreeEl[l] = (TTree*)inFile->Get(str.Data());
2398 //fCovTree = (TTree*)inFile->Get(str.Data());
2399 //fCovTreeEl[l] = new TTree(*fCovTree);
2401 Int_t nBinsMu = fDBgridMu.GetTotBins();
2402 for(Int_t l=0; l<nBinsMu; l++) {
2404 str = "/CovMatrices/Pions/CovTreePi_bin";
2406 str = "/CovMatrices/Muons/CovTreeMu_bin";
2409 fCovTreeMu[l] = (TTree*)inFile->Get(str.Data());
2410 //fCovTree = (TTree*)inFile->Get(str.Data());
2411 //fCovTreeMu[l] = new TTree(*fCovTree);
2418 //-----------------------------------------------------------------------------
2419 Int_t AliTPCtrackerParam::ReaddEdx(const Char_t* inName,Int_t pdg) {
2420 //-----------------------------------------------------------------------------
2421 // This function reads the dEdx parameters from the DB
2422 //-----------------------------------------------------------------------------
2424 if(gSystem->AccessPathName(inName,kFileExists)) {
2425 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2428 TFile *inFile = TFile::Open(inName);
2431 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2432 fdEdxMeanPi.~AliTPCkineGrid();
2433 new(&fdEdxMeanPi) AliTPCkineGrid(*fdEdxMean);
2434 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2435 fdEdxRMSPi.~AliTPCkineGrid();
2436 new(&fdEdxRMSPi) AliTPCkineGrid(*fdEdxRMS);
2439 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxMeanKa");
2440 fdEdxMeanKa.~AliTPCkineGrid();
2441 new(&fdEdxMeanKa) AliTPCkineGrid(*fdEdxMean);
2442 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxRMSKa");
2443 fdEdxRMSKa.~AliTPCkineGrid();
2444 new(&fdEdxRMSKa) AliTPCkineGrid(*fdEdxRMS);
2447 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxMeanPr");
2448 fdEdxMeanPr.~AliTPCkineGrid();
2449 new(&fdEdxMeanPr) AliTPCkineGrid(*fdEdxMean);
2450 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxRMSPr");
2451 fdEdxRMSPr.~AliTPCkineGrid();
2452 new(&fdEdxRMSPr) AliTPCkineGrid(*fdEdxRMS);
2455 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxMeanEl");
2456 fdEdxMeanEl.~AliTPCkineGrid();
2457 new(&fdEdxMeanEl) AliTPCkineGrid(*fdEdxMean);
2458 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxRMSEl");
2459 fdEdxRMSEl.~AliTPCkineGrid();
2460 new(&fdEdxRMSEl) AliTPCkineGrid(*fdEdxRMS);
2464 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2465 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2467 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxMeanMu");
2468 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxRMSMu");
2470 fdEdxMeanMu.~AliTPCkineGrid();
2471 new(&fdEdxMeanMu) AliTPCkineGrid(*fdEdxMean);
2472 fdEdxRMSMu.~AliTPCkineGrid();
2473 new(&fdEdxRMSMu) AliTPCkineGrid(*fdEdxRMS);
2480 //-----------------------------------------------------------------------------
2481 Int_t AliTPCtrackerParam::ReadDBgrid(const Char_t* inName) {
2482 //-----------------------------------------------------------------------------
2483 // This function reads the kine grid from the DB
2484 //-----------------------------------------------------------------------------
2486 if(gSystem->AccessPathName(inName,kFileExists)) {
2487 cerr<<"AliTPCtrackerParam::ReadCovMatrices: "<<inName<<" not found\n";
2490 TFile *inFile = TFile::Open(inName);
2492 // first read the DB grid for the different particles
2493 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2494 fDBgridPi.~AliTPCkineGrid();
2495 new(&fDBgridPi) AliTPCkineGrid(*fDBgrid);
2496 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Kaons/DBgridKa");
2497 fDBgridKa.~AliTPCkineGrid();
2498 new(&fDBgridKa) AliTPCkineGrid(*fDBgrid);
2500 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2502 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Protons/DBgridPr");
2504 fDBgridPr.~AliTPCkineGrid();
2505 new(&fDBgridPr) AliTPCkineGrid(*fDBgrid);
2506 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Electrons/DBgridEl");
2507 fDBgridEl.~AliTPCkineGrid();
2508 new(&fDBgridEl) AliTPCkineGrid(*fDBgrid);
2510 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2512 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Muons/DBgridMu");
2514 fDBgridMu.~AliTPCkineGrid();
2515 new(&fDBgridMu) AliTPCkineGrid(*fDBgrid);
2521 //-----------------------------------------------------------------------------
2522 Int_t AliTPCtrackerParam::ReadEffs(const Char_t* inName) {
2523 //-----------------------------------------------------------------------------
2524 // This function reads the TPC efficiencies from the DB
2525 //-----------------------------------------------------------------------------
2527 if(gSystem->AccessPathName(inName,kFileExists)) {
2528 cerr<<"AliTPCtrackerParam::ReadEffs: "<<inName<<" not found\n";
2531 TFile *inFile = TFile::Open(inName);
2533 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Pions/EffPi");
2534 fEffPi.~AliTPCkineGrid();
2535 new(&fEffPi) AliTPCkineGrid(*fEff);
2536 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Kaons/EffKa");
2537 fEffKa.~AliTPCkineGrid();
2538 new(&fEffKa) AliTPCkineGrid(*fEff);
2539 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Protons/EffPr");
2540 fEffPr.~AliTPCkineGrid();
2541 new(&fEffPr) AliTPCkineGrid(*fEff);
2542 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Electrons/EffEl");
2543 fEffEl.~AliTPCkineGrid();
2544 new(&fEffEl) AliTPCkineGrid(*fEff);
2545 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Muons/EffMu");
2546 fEffMu.~AliTPCkineGrid();
2547 new(&fEffMu) AliTPCkineGrid(*fEff);
2553 //-----------------------------------------------------------------------------
2554 Int_t AliTPCtrackerParam::ReadPulls(const Char_t* inName) {
2555 //-----------------------------------------------------------------------------
2556 // This function reads the pulls from the DB
2557 //-----------------------------------------------------------------------------
2559 if(gSystem->AccessPathName(inName,kFileExists)) {
2560 cerr<<"AliTPCtrackerParam::ReadPulls: "<<inName<<" not found\n";
2563 TFile *inFile = TFile::Open(inName);
2565 for(Int_t i=0; i<5; i++) {
2566 TString pi("/Pulls/Pions/PullsPi_"); pi+=i;
2567 TString ka("/Pulls/Kaons/PullsKa_"); ka+=i;
2568 TString pr("/Pulls/Protons/PullsPr_"); pr+=i;
2569 TString el("/Pulls/Electrons/PullsEl_"); el+=i;
2570 TString mu("/Pulls/Muons/PullsMu_"); mu+=i;
2572 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2573 fPullsPi[i].~AliTPCkineGrid();
2574 new(&fPullsPi[i]) AliTPCkineGrid(*fPulls);
2576 fPulls = (AliTPCkineGrid*)inFile->Get(ka.Data());
2577 fPullsKa[i].~AliTPCkineGrid();
2578 new(&fPullsKa[i]) AliTPCkineGrid(*fPulls);
2581 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2583 fPulls = (AliTPCkineGrid*)inFile->Get(pr.Data());
2585 fPullsPr[i].~AliTPCkineGrid();
2586 new(&fPullsPr[i]) AliTPCkineGrid(*fPulls);
2588 fPulls = (AliTPCkineGrid*)inFile->Get(el.Data());
2589 fPullsEl[i].~AliTPCkineGrid();
2590 new(&fPullsEl[i]) AliTPCkineGrid(*fPulls);
2593 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2595 fPulls = (AliTPCkineGrid*)inFile->Get(mu.Data());
2597 fPullsMu[i].~AliTPCkineGrid();
2598 new(&fPullsMu[i]) AliTPCkineGrid(*fPulls);
2605 //-----------------------------------------------------------------------------
2606 Int_t AliTPCtrackerParam::ReadRegParams(const Char_t* inName,Int_t pdg) {
2607 //-----------------------------------------------------------------------------
2608 // This function reads the regularization parameters from the DB
2609 //-----------------------------------------------------------------------------
2611 if(gSystem->AccessPathName(inName,kFileExists)) {
2612 cerr<<"AliTPCtrackerParam::ReadRegParams: "<<inName<<" not found\n";
2614 // Introduced change to "reverse" the TMatrixD read from file.
2615 // Needed because storage mode of TMatrixD changed from column-wise
2616 // to rwo-wise in ROOT.
2618 // A.Dainese 03/06/05
2620 TMatrixD dummyMatrix(9,3);
2622 TFile *inFile = TFile::Open(inName);
2625 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2626 new(&fRegParPi) TMatrixD(*fRegPar);
2627 //printf("before\n");
2628 //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));
2629 dummyMatrix = fRegParPi;
2630 fRegParPi(0,0) = dummyMatrix(0,0);
2631 fRegParPi(0,1) = dummyMatrix(0,1);
2632 fRegParPi(0,2) = dummyMatrix(0,2);
2633 fRegParPi(1,0) = dummyMatrix(3,0);
2634 fRegParPi(1,1) = dummyMatrix(1,1);
2635 fRegParPi(1,2) = dummyMatrix(1,2);
2636 fRegParPi(2,0) = dummyMatrix(6,0);
2637 fRegParPi(2,1) = dummyMatrix(3,2);
2638 fRegParPi(2,2) = dummyMatrix(2,2);
2639 fRegParPi(3,0) = dummyMatrix(1,0);
2640 fRegParPi(3,1) = dummyMatrix(4,0);
2641 fRegParPi(3,2) = dummyMatrix(7,0);
2642 fRegParPi(4,0) = dummyMatrix(3,1);
2643 fRegParPi(4,1) = dummyMatrix(4,1);
2644 fRegParPi(4,2) = dummyMatrix(7,1);
2645 fRegParPi(5,0) = dummyMatrix(6,1);
2646 fRegParPi(5,1) = dummyMatrix(4,2);
2647 fRegParPi(5,2) = dummyMatrix(7,2);
2648 fRegParPi(6,0) = dummyMatrix(2,0);
2649 fRegParPi(6,1) = dummyMatrix(5,0);
2650 fRegParPi(6,2) = dummyMatrix(8,0);
2651 fRegParPi(7,0) = dummyMatrix(2,1);
2652 fRegParPi(7,1) = dummyMatrix(5,1);
2653 fRegParPi(7,2) = dummyMatrix(8,1);
2654 fRegParPi(8,0) = dummyMatrix(6,2);
2655 fRegParPi(8,1) = dummyMatrix(5,2);
2656 fRegParPi(8,2) = dummyMatrix(8,2);
2657 //printf("after\n");
2658 //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));
2661 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Kaons/RegKaons");
2662 new(&fRegParKa) TMatrixD(*fRegPar);
2663 dummyMatrix = fRegParKa;
2664 fRegParKa(0,0) = dummyMatrix(0,0);
2665 fRegParKa(0,1) = dummyMatrix(0,1);
2666 fRegParKa(0,2) = dummyMatrix(0,2);
2667 fRegParKa(1,0) = dummyMatrix(3,0);
2668 fRegParKa(1,1) = dummyMatrix(1,1);
2669 fRegParKa(1,2) = dummyMatrix(1,2);
2670 fRegParKa(2,0) = dummyMatrix(6,0);
2671 fRegParKa(2,1) = dummyMatrix(3,2);
2672 fRegParKa(2,2) = dummyMatrix(2,2);
2673 fRegParKa(3,0) = dummyMatrix(1,0);
2674 fRegParKa(3,1) = dummyMatrix(4,0);
2675 fRegParKa(3,2) = dummyMatrix(7,0);
2676 fRegParKa(4,0) = dummyMatrix(3,1);
2677 fRegParKa(4,1) = dummyMatrix(4,1);
2678 fRegParKa(4,2) = dummyMatrix(7,1);
2679 fRegParKa(5,0) = dummyMatrix(6,1);
2680 fRegParKa(5,1) = dummyMatrix(4,2);
2681 fRegParKa(5,2) = dummyMatrix(7,2);
2682 fRegParKa(6,0) = dummyMatrix(2,0);
2683 fRegParKa(6,1) = dummyMatrix(5,0);
2684 fRegParKa(6,2) = dummyMatrix(8,0);
2685 fRegParKa(7,0) = dummyMatrix(2,1);
2686 fRegParKa(7,1) = dummyMatrix(5,1);
2687 fRegParKa(7,2) = dummyMatrix(8,1);
2688 fRegParKa(8,0) = dummyMatrix(6,2);
2689 fRegParKa(8,1) = dummyMatrix(5,2);
2690 fRegParKa(8,2) = dummyMatrix(8,2);
2694 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2696 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Protons/RegProtons");
2698 new(&fRegParPr) TMatrixD(*fRegPar);
2699 dummyMatrix = fRegParPr;
2700 fRegParPr(0,0) = dummyMatrix(0,0);
2701 fRegParPr(0,1) = dummyMatrix(0,1);
2702 fRegParPr(0,2) = dummyMatrix(0,2);
2703 fRegParPr(1,0) = dummyMatrix(3,0);
2704 fRegParPr(1,1) = dummyMatrix(1,1);
2705 fRegParPr(1,2) = dummyMatrix(1,2);
2706 fRegParPr(2,0) = dummyMatrix(6,0);
2707 fRegParPr(2,1) = dummyMatrix(3,2);
2708 fRegParPr(2,2) = dummyMatrix(2,2);
2709 fRegParPr(3,0) = dummyMatrix(1,0);
2710 fRegParPr(3,1) = dummyMatrix(4,0);
2711 fRegParPr(3,2) = dummyMatrix(7,0);
2712 fRegParPr(4,0) = dummyMatrix(3,1);
2713 fRegParPr(4,1) = dummyMatrix(4,1);
2714 fRegParPr(4,2) = dummyMatrix(7,1);
2715 fRegParPr(5,0) = dummyMatrix(6,1);
2716 fRegParPr(5,1) = dummyMatrix(4,2);
2717 fRegParPr(5,2) = dummyMatrix(7,2);
2718 fRegParPr(6,0) = dummyMatrix(2,0);
2719 fRegParPr(6,1) = dummyMatrix(5,0);
2720 fRegParPr(6,2) = dummyMatrix(8,0);
2721 fRegParPr(7,0) = dummyMatrix(2,1);
2722 fRegParPr(7,1) = dummyMatrix(5,1);
2723 fRegParPr(7,2) = dummyMatrix(8,1);
2724 fRegParPr(8,0) = dummyMatrix(6,2);
2725 fRegParPr(8,1) = dummyMatrix(5,2);
2726 fRegParPr(8,2) = dummyMatrix(8,2);
2729 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Electrons/RegElectrons");
2730 new(&fRegParEl) TMatrixD(*fRegPar);
2731 dummyMatrix = fRegParEl;
2732 fRegParEl(0,0) = dummyMatrix(0,0);
2733 fRegParEl(0,1) = dummyMatrix(0,1);
2734 fRegParEl(0,2) = dummyMatrix(0,2);
2735 fRegParEl(1,0) = dummyMatrix(3,0);
2736 fRegParEl(1,1) = dummyMatrix(1,1);
2737 fRegParEl(1,2) = dummyMatrix(1,2);
2738 fRegParEl(2,0) = dummyMatrix(6,0);
2739 fRegParEl(2,1) = dummyMatrix(3,2);
2740 fRegParEl(2,2) = dummyMatrix(2,2);
2741 fRegParEl(3,0) = dummyMatrix(1,0);
2742 fRegParEl(3,1) = dummyMatrix(4,0);
2743 fRegParEl(3,2) = dummyMatrix(7,0);
2744 fRegParEl(4,0) = dummyMatrix(3,1);
2745 fRegParEl(4,1) = dummyMatrix(4,1);
2746 fRegParEl(4,2) = dummyMatrix(7,1);
2747 fRegParEl(5,0) = dummyMatrix(6,1);
2748 fRegParEl(5,1) = dummyMatrix(4,2);
2749 fRegParEl(5,2) = dummyMatrix(7,2);
2750 fRegParEl(6,0) = dummyMatrix(2,0);
2751 fRegParEl(6,1) = dummyMatrix(5,0);
2752 fRegParEl(6,2) = dummyMatrix(8,0);
2753 fRegParEl(7,0) = dummyMatrix(2,1);
2754 fRegParEl(7,1) = dummyMatrix(5,1);
2755 fRegParEl(7,2) = dummyMatrix(8,1);
2756 fRegParEl(8,0) = dummyMatrix(6,2);
2757 fRegParEl(8,1) = dummyMatrix(5,2);
2758 fRegParEl(8,2) = dummyMatrix(8,2);
2762 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2764 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Muons/RegMuons");
2766 new(&fRegParMu) TMatrixD(*fRegPar);
2767 dummyMatrix = fRegParMu;
2768 fRegParMu(0,0) = dummyMatrix(0,0);
2769 fRegParMu(0,1) = dummyMatrix(0,1);
2770 fRegParMu(0,2) = dummyMatrix(0,2);
2771 fRegParMu(1,0) = dummyMatrix(3,0);
2772 fRegParMu(1,1) = dummyMatrix(1,1);
2773 fRegParMu(1,2) = dummyMatrix(1,2);
2774 fRegParMu(2,0) = dummyMatrix(6,0);
2775 fRegParMu(2,1) = dummyMatrix(3,2);
2776 fRegParMu(2,2) = dummyMatrix(2,2);
2777 fRegParMu(3,0) = dummyMatrix(1,0);
2778 fRegParMu(3,1) = dummyMatrix(4,0);
2779 fRegParMu(3,2) = dummyMatrix(7,0);
2780 fRegParMu(4,0) = dummyMatrix(3,1);
2781 fRegParMu(4,1) = dummyMatrix(4,1);
2782 fRegParMu(4,2) = dummyMatrix(7,1);
2783 fRegParMu(5,0) = dummyMatrix(6,1);
2784 fRegParMu(5,1) = dummyMatrix(4,2);
2785 fRegParMu(5,2) = dummyMatrix(7,2);
2786 fRegParMu(6,0) = dummyMatrix(2,0);
2787 fRegParMu(6,1) = dummyMatrix(5,0);
2788 fRegParMu(6,2) = dummyMatrix(8,0);
2789 fRegParMu(7,0) = dummyMatrix(2,1);
2790 fRegParMu(7,1) = dummyMatrix(5,1);
2791 fRegParMu(7,2) = dummyMatrix(8,1);
2792 fRegParMu(8,0) = dummyMatrix(6,2);
2793 fRegParMu(8,1) = dummyMatrix(5,2);
2794 fRegParMu(8,2) = dummyMatrix(8,2);
2801 //-----------------------------------------------------------------------------
2802 void AliTPCtrackerParam::RegularizeCovMatrix(const Char_t *outName,Int_t pdg) {
2803 //-----------------------------------------------------------------------------
2804 // This function regularizes the elements of the covariance matrix
2805 // that show a momentum depence:
2806 // c00, c11, c22, c33, c44, c20, c24, c40, c31
2807 // The regularization is done separately for pions, kaons, electrons:
2808 // give "Pion","Kaon" or "Electron" as first argument.
2809 //-----------------------------------------------------------------------------
2811 gStyle->SetOptStat(0);
2812 gStyle->SetOptFit(10001);
2815 const char *part="Pions - ";
2817 InitializeKineGrid("DB");
2819 const Int_t kfitbins = fDBgrid->GetBinsPt();
2820 cerr<<" Fit bins: "<<kfitbins<<endl;
2826 cerr<<" Processing pions ...\n";
2831 cerr<<" Processing kaons ...\n";
2833 case 2212: //protons
2836 cerr<<" Processing protons ...\n";
2838 case 11: // electrons
2840 part="Electrons - ";
2841 cerr<<" Processing electrons ...\n";
2846 cerr<<" Processing muons ...\n";
2852 // create a chain with compared tracks
2853 TChain *cmptrkchain = new ("cmptrktree");
2854 cmptrkchain.Add("CovMatrix_AllEvts.root");
2855 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
2856 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
2857 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
2861 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
2862 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
2865 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
2866 Int_t entries = (Int_t)cmptrktree->GetEntries();
2870 Int_t *n = new Int_t[kfitbins];
2871 Int_t *n00 = new Int_t[kfitbins];
2872 Int_t *n11 = new Int_t[kfitbins];
2873 Int_t *n20 = new Int_t[kfitbins];
2874 Int_t *n22 = new Int_t[kfitbins];
2875 Int_t *n31 = new Int_t[kfitbins];
2876 Int_t *n33 = new Int_t[kfitbins];
2877 Int_t *n40 = new Int_t[kfitbins];
2878 Int_t *n42 = new Int_t[kfitbins];
2879 Int_t *n44 = new Int_t[kfitbins];
2880 Double_t *p = new Double_t[kfitbins];
2881 Double_t *ep = new Double_t[kfitbins];
2882 Double_t *mean00 = new Double_t[kfitbins];
2883 Double_t *mean11 = new Double_t[kfitbins];
2884 Double_t *mean20 = new Double_t[kfitbins];
2885 Double_t *mean22 = new Double_t[kfitbins];
2886 Double_t *mean31 = new Double_t[kfitbins];
2887 Double_t *mean33 = new Double_t[kfitbins];
2888 Double_t *mean40 = new Double_t[kfitbins];
2889 Double_t *mean42 = new Double_t[kfitbins];
2890 Double_t *mean44 = new Double_t[kfitbins];
2891 Double_t *sigma00 = new Double_t[kfitbins];
2892 Double_t *sigma11 = new Double_t[kfitbins];
2893 Double_t *sigma20 = new Double_t[kfitbins];
2894 Double_t *sigma22 = new Double_t[kfitbins];
2895 Double_t *sigma31 = new Double_t[kfitbins];
2896 Double_t *sigma33 = new Double_t[kfitbins];
2897 Double_t *sigma40 = new Double_t[kfitbins];
2898 Double_t *sigma42 = new Double_t[kfitbins];
2899 Double_t *sigma44 = new Double_t[kfitbins];
2900 Double_t *rmean = new Double_t[kfitbins];
2901 Double_t *rsigma = new Double_t[kfitbins];
2904 for(Int_t l=0; l<kfitbins; l++) {
2906 n00[l]=n11[l]=n20[l]=n22[l]=n31[l]=n33[l]=n40[l]=n42[l]=n44[l]=1;
2908 mean00[l]=mean11[l]=mean20[l]=mean22[l]=mean31[l]=mean33[l]=mean40[l]=mean42[l]=mean44[l]=0.;
2909 sigma00[l]=sigma11[l]=sigma20[l]=sigma22[l]=sigma31[l]=sigma33[l]=sigma40[l]=sigma42[l]=sigma44[l]=0.;
2912 // loop on chain entries for mean
2913 for(Int_t l=0; l<entries; l++) {
2914 cmptrktree->GetEvent(l);
2915 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2916 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2919 mean00[pbin]+=cmptrk.c00;
2920 mean11[pbin]+=cmptrk.c11;
2921 mean20[pbin]+=cmptrk.c20;
2922 mean22[pbin]+=cmptrk.c22;
2923 mean31[pbin]+=cmptrk.c31;
2924 mean33[pbin]+=cmptrk.c33;
2925 mean40[pbin]+=cmptrk.c40;
2926 mean42[pbin]+=cmptrk.c42;
2927 mean44[pbin]+=cmptrk.c44;
2928 } // loop on chain entries
2930 for(Int_t l=0; l<kfitbins; l++) {
2943 // loop on chain entries for sigma
2944 for(Int_t l=0; l<entries; l++) {
2945 cmptrktree->GetEvent(l);
2946 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2947 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2948 if(TMath::Abs(cmptrk.c00-mean00[pbin])<0.4*mean00[pbin]) { n00[pbin]++;
2949 sigma00[pbin]+=(cmptrk.c00-mean00[pbin])*(cmptrk.c00-mean00[pbin]); }
2950 if(TMath::Abs(cmptrk.c11-mean11[pbin])<0.4*mean11[pbin]) { n11[pbin]++;
2951 sigma11[pbin]+=(cmptrk.c11-mean11[pbin])*(cmptrk.c11-mean11[pbin]); }
2952 if(TMath::Abs(cmptrk.c20-mean20[pbin])<0.4*mean20[pbin]) { n20[pbin]++;
2953 sigma20[pbin]+=(cmptrk.c20-mean20[pbin])*(cmptrk.c20-mean20[pbin]); }
2954 if(TMath::Abs(cmptrk.c22-mean22[pbin])<0.4*mean22[pbin]) { n22[pbin]++;
2955 sigma22[pbin]+=(cmptrk.c22-mean22[pbin])*(cmptrk.c22-mean22[pbin]); }
2956 if(TMath::Abs(cmptrk.c31-mean31[pbin])<-0.4*mean31[pbin]) { n31[pbin]++;
2957 sigma31[pbin]+=(cmptrk.c31-mean31[pbin])*(cmptrk.c31-mean31[pbin]); }
2958 if(TMath::Abs(cmptrk.c33-mean33[pbin])<0.4*mean33[pbin]) { n33[pbin]++;
2959 sigma33[pbin]+=(cmptrk.c33-mean33[pbin])*(cmptrk.c33-mean33[pbin]); }
2960 if(TMath::Abs(cmptrk.c40-mean40[pbin])<0.4*mean40[pbin]) { n40[pbin]++;
2961 sigma40[pbin]+=(cmptrk.c40-mean40[pbin])*(cmptrk.c40-mean40[pbin]); }
2962 if(TMath::Abs(cmptrk.c42-mean42[pbin])<0.4*mean42[pbin]) { n42[pbin]++;
2963 sigma42[pbin]+=(cmptrk.c42-mean42[pbin])*(cmptrk.c42-mean42[pbin]); }
2964 if(TMath::Abs(cmptrk.c44-mean44[pbin])<0.4*mean44[pbin]) { n44[pbin]++;
2965 sigma44[pbin]+=(cmptrk.c44-mean44[pbin])*(cmptrk.c44-mean44[pbin]); }
2966 } // loop on chain entries
2968 for(Int_t l=0; l<kfitbins; l++) {
2969 sigma00[l] = TMath::Sqrt(sigma00[l]/n00[l]);
2970 sigma11[l] = TMath::Sqrt(sigma11[l]/n11[l]);
2971 sigma20[l] = TMath::Sqrt(sigma20[l]/n20[l]);
2972 sigma22[l] = TMath::Sqrt(sigma22[l]/n22[l]);
2973 sigma31[l] = TMath::Sqrt(sigma31[l]/n31[l]);
2974 sigma33[l] = TMath::Sqrt(sigma33[l]/n33[l]);
2975 sigma40[l] = TMath::Sqrt(sigma40[l]/n40[l]);
2976 sigma42[l] = TMath::Sqrt(sigma42[l]/n42[l]);
2977 sigma44[l] = TMath::Sqrt(sigma44[l]/n44[l]);
2982 TF1 *func = new TF1("RegFunc",RegFunc,0.23,50.,3);
2983 func->SetParNames("A_meas","A_scatt","B");
2985 // line to draw on the plots
2986 TLine *lin = new TLine(-1,1,1.69,1);
2987 lin->SetLineStyle(2);
2988 lin->SetLineWidth(2);
2990 // matrix used to store fit results
2991 TMatrixD fitRes(9,3);
2995 // create the canvas
2996 TCanvas *canv00 = new TCanvas("canv00","c00",0,0,700,900);
2997 canv00->Divide(1,2);
2998 // create the graph for cov matrix
2999 TGraphErrors *gr00 = new TGraphErrors(kfitbins,p,mean00,ep,sigma00);
3000 TString title00("C(y,y)"); title00.Prepend(part);
3001 TH2F *frame00 = new TH2F("frame00",title00.Data(),2,0.1,50,2,0,5e-3);
3002 frame00->SetXTitle("p [GeV/c]");
3003 canv00->cd(1); gPad->SetLogx();
3006 // Sets initial values for parameters
3007 func->SetParameters(1.6e-3,1.9e-4,1.5);
3008 // Fit points in range defined by function
3009 gr00->Fit("RegFunc","R,Q");
3010 func->GetParameters(fitpar);
3011 for(Int_t i=0; i<3; i++) fitRes(0,i)=fitpar[i];
3012 for(Int_t l=0; l<kfitbins; l++) {
3013 rmean[l] = mean00[l]/RegFunc(&p[l],fitpar);
3014 rsigma[l] = sigma00[l]/RegFunc(&p[l],fitpar);
3016 // create the graph the regularized cov. matrix
3017 TGraphErrors *gr00reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3018 TString regtitle00("C(y,y)/(A_meas+A_scatt/p^{B})");
3019 regtitle00.Prepend(part);
3020 TH2F *frame00reg = new TH2F("frame00reg",regtitle00.Data(),2,0.1,50,2,0,2);
3021 frame00reg->SetXTitle("p [GeV/c]");
3022 canv00->cd(2); gPad->SetLogx();
3030 // create the canvas
3031 TCanvas *canv11 = new TCanvas("canv11","c11",0,0,700,900);
3032 canv11->Divide(1,2);
3033 // create the graph for cov matrix
3034 TGraphErrors *gr11 = new TGraphErrors(kfitbins,p,mean11,ep,sigma11);
3035 TString title11("C(z,z)"); title11.Prepend(part);
3036 TH2F *frame11 = new TH2F("frame11",title11.Data(),2,0.1,50,2,0,6e-3);
3037 frame11->SetXTitle("p [GeV/c]");
3038 canv11->cd(1); gPad->SetLogx();
3041 // Sets initial values for parameters
3042 func->SetParameters(1.2e-3,8.1e-4,1.);
3043 // Fit points in range defined by function
3044 gr11->Fit("RegFunc","R,Q");
3045 func->GetParameters(fitpar);
3046 for(Int_t i=0; i<3; i++) fitRes(1,i)=fitpar[i];
3047 for(Int_t l=0; l<kfitbins; l++) {
3048 rmean[l] = mean11[l]/RegFunc(&p[l],fitpar);
3049 rsigma[l] = sigma11[l]/RegFunc(&p[l],fitpar);
3051 // create the graph the regularized cov. matrix
3052 TGraphErrors *gr11reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3053 TString regtitle11("C(z,z)/(A_meas+A_scatt/p^{B})");
3054 regtitle11.Prepend(part);
3055 TH2F *frame11reg = new TH2F("frame11reg",regtitle11.Data(),2,0.1,50,2,0,2);
3056 frame11reg->SetXTitle("p [GeV/c]");
3057 canv11->cd(2); gPad->SetLogx();
3065 // create the canvas
3066 TCanvas *canv20 = new TCanvas("canv20","c20",0,0,700,900);
3067 canv20->Divide(1,2);
3068 // create the graph for cov matrix
3069 TGraphErrors *gr20 = new TGraphErrors(kfitbins,p,mean20,ep,sigma20);
3070 TString title20("C(#eta, y)"); title20.Prepend(part);
3071 TH2F *frame20 = new TH2F("frame20",title20.Data(),2,0.1,50,2,0,2.5e-4);
3072 frame20->SetXTitle("p [GeV/c]");
3073 canv20->cd(1); gPad->SetLogx();
3076 // Sets initial values for parameters
3077 func->SetParameters(7.3e-5,1.2e-5,1.5);
3078 // Fit points in range defined by function
3079 gr20->Fit("RegFunc","R,Q");
3080 func->GetParameters(fitpar);
3081 for(Int_t i=0; i<3; i++) fitRes(2,i)=fitpar[i];
3082 for(Int_t l=0; l<kfitbins; l++) {
3083 rmean[l] = mean20[l]/RegFunc(&p[l],fitpar);
3084 rsigma[l] = sigma20[l]/RegFunc(&p[l],fitpar);
3086 // create the graph the regularized cov. matrix
3087 TGraphErrors *gr20reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3088 TString regtitle20("C(#eta, y)/(A_meas+A_scatt/p^{B})");
3089 regtitle20.Prepend(part);
3090 TH2F *frame20reg = new TH2F("frame20reg",regtitle20.Data(),2,0.1,50,2,0,2);
3091 frame20reg->SetXTitle("p [GeV/c]");
3092 canv20->cd(2); gPad->SetLogx();
3100 // create the canvas
3101 TCanvas *canv22 = new TCanvas("canv22","c22",0,0,700,900);
3102 canv22->Divide(1,2);
3103 // create the graph for cov matrix
3104 TGraphErrors *gr22 = new TGraphErrors(kfitbins,p,mean22,ep,sigma22);
3105 TString title22("C(#eta, #eta)"); title22.Prepend(part);
3106 TH2F *frame22 = new TH2F("frame22",title22.Data(),2,0.1,50,2,0,3e-5);
3107 frame22->SetXTitle("p [GeV/c]");
3108 canv22->cd(1); gPad->SetLogx();
3111 // Sets initial values for parameters
3112 func->SetParameters(5.2e-6,1.1e-6,2.);
3113 // Fit points in range defined by function
3114 gr22->Fit("RegFunc","R,Q");
3115 func->GetParameters(fitpar);
3116 for(Int_t i=0; i<3; i++) fitRes(3,i)=fitpar[i];
3117 for(Int_t l=0; l<kfitbins; l++) {
3118 rmean[l] = mean22[l]/RegFunc(&p[l],fitpar);
3119 rsigma[l] = sigma22[l]/RegFunc(&p[l],fitpar);
3121 // create the graph the regularized cov. matrix
3122 TGraphErrors *gr22reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3123 TString regtitle22("C(#eta, #eta)/(A_meas+A_scatt/p^{B})");
3124 regtitle22.Prepend(part);
3125 TH2F *frame22reg = new TH2F("frame22reg",regtitle22.Data(),2,0.1,50,2,0,2);
3126 frame22reg->SetXTitle("p [GeV/c]");
3127 canv22->cd(2); gPad->SetLogx();
3135 // create the canvas
3136 TCanvas *canv31 = new TCanvas("canv31","c31",0,0,700,900);
3137 canv31->Divide(1,2);
3138 // create the graph for cov matrix
3139 TGraphErrors *gr31 = new TGraphErrors(kfitbins,p,mean31,ep,sigma31);
3140 TString title31("C(tg #lambda,z)"); title31.Prepend(part);
3141 TH2F *frame31 = new TH2F("frame31",title31.Data(),2,0.1,50,2,-2e-4,0);
3142 frame31->SetXTitle("p [GeV/c]");
3143 canv31->cd(1); gPad->SetLogx();
3146 // Sets initial values for parameters
3147 func->SetParameters(-1.2e-5,-1.2e-5,1.5);
3148 // Fit points in range defined by function
3149 gr31->Fit("RegFunc","R,Q");
3150 func->GetParameters(fitpar);
3151 for(Int_t i=0; i<3; i++) fitRes(4,i)=fitpar[i];
3152 for(Int_t l=0; l<kfitbins; l++) {
3153 rmean[l] = mean31[l]/RegFunc(&p[l],fitpar);
3154 rsigma[l] = -sigma31[l]/RegFunc(&p[l],fitpar);
3156 // create the graph the regularized cov. matrix
3157 TGraphErrors *gr31reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3158 TString regtitle31("C(tg #lambda,z)/(A_meas+A_scatt/p^{B})");
3159 regtitle31.Prepend(part);
3160 TH2F *frame31reg = new TH2F("frame31reg",regtitle31.Data(),2,0.1,50,2,0,2);
3161 frame31reg->SetXTitle("p [GeV/c]");
3162 canv31->cd(2); gPad->SetLogx();
3170 // create the canvas
3171 TCanvas *canv33 = new TCanvas("canv33","c33",0,0,700,900);
3172 canv33->Divide(1,2);
3173 // create the graph for cov matrix
3174 TGraphErrors *gr33 = new TGraphErrors(kfitbins,p,mean33,ep,sigma33);
3175 TString title33("C(tg #lambda,tg #lambda)"); title33.Prepend(part);
3176 TH2F *frame33 = new TH2F("frame33",title33.Data(),2,0.1,50,2,0,1e-5);
3177 frame33->SetXTitle("p [GeV/c]");
3178 canv33->cd(1); gPad->SetLogx();
3181 // Sets initial values for parameters
3182 func->SetParameters(1.3e-7,4.6e-7,1.7);
3183 // Fit points in range defined by function
3184 gr33->Fit("RegFunc","R,Q");
3185 func->GetParameters(fitpar);
3186 for(Int_t i=0; i<3; i++) fitRes(5,i)=fitpar[i];
3187 for(Int_t l=0; l<kfitbins; l++) {
3188 rmean[l] = mean33[l]/RegFunc(&p[l],fitpar);
3189 rsigma[l] = sigma33[l]/RegFunc(&p[l],fitpar);
3191 // create the graph the regularized cov. matrix
3192 TGraphErrors *gr33reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3193 TString regtitle33("C(tg #lambda,tg #lambda)/(A_meas+A_scatt/p^{B})");
3194 regtitle33.Prepend(part);
3195 TH2F *frame33reg = new TH2F("frame33reg",regtitle33.Data(),2,0.1,50,2,0,2);
3196 frame33reg->SetXTitle("p [GeV/c]");
3197 canv33->cd(2); gPad->SetLogx();
3205 // create the canvas
3206 TCanvas *canv40 = new TCanvas("canv40","c40",0,0,700,900);
3207 canv40->Divide(1,2);
3208 // create the graph for cov matrix
3209 TGraphErrors *gr40 = new TGraphErrors(kfitbins,p,mean40,ep,sigma40);
3210 TString title40("C(C,y)"); title40.Prepend(part);
3211 TH2F *frame40 = new TH2F("frame40",title40.Data(),2,0.1,50,2,0,1e-6);
3212 frame40->SetXTitle("p [GeV/c]");
3213 canv40->cd(1); gPad->SetLogx();
3216 // Sets initial values for parameters
3217 func->SetParameters(4.e-7,4.4e-8,1.5);
3218 // Fit points in range defined by function
3219 gr40->Fit("RegFunc","R,Q");
3220 func->GetParameters(fitpar);
3221 for(Int_t i=0; i<3; i++) fitRes(6,i)=fitpar[i];
3222 for(Int_t l=0; l<kfitbins; l++) {
3223 rmean[l] = mean40[l]/RegFunc(&p[l],fitpar);
3224 rsigma[l] = sigma40[l]/RegFunc(&p[l],fitpar);
3226 // create the graph the regularized cov. matrix
3227 TGraphErrors *gr40reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3228 TString regtitle40("C(C,y)/(A_meas+A_scatt/p^{B})");
3229 regtitle40.Prepend(part);
3230 TH2F *frame40reg = new TH2F("frame40reg",regtitle40.Data(),2,0.1,50,2,0,2);
3231 frame40reg->SetXTitle("p [GeV/c]");
3232 canv40->cd(2); gPad->SetLogx();
3240 // create the canvas
3241 TCanvas *canv42 = new TCanvas("canv42","c42",0,0,700,900);
3242 canv42->Divide(1,2);
3243 // create the graph for cov matrix
3244 TGraphErrors *gr42 = new TGraphErrors(kfitbins,p,mean42,ep,sigma42);
3245 TString title42("C(C, #eta)"); title42.Prepend(part);
3246 TH2F *frame42 = new TH2F("frame42",title42.Data(),2,0.1,50,2,0,2.2e-7);
3247 frame42->SetXTitle("p [GeV/c]");
3248 canv42->cd(1); gPad->SetLogx();
3251 // Sets initial values for parameters
3252 func->SetParameters(3.e-8,8.2e-9,2.);
3253 // Fit points in range defined by function
3254 gr42->Fit("RegFunc","R,Q");
3255 func->GetParameters(fitpar);
3256 for(Int_t i=0; i<3; i++) fitRes(7,i)=fitpar[i];
3257 for(Int_t l=0; l<kfitbins; l++) {
3258 rmean[l] = mean42[l]/RegFunc(&p[l],fitpar);
3259 rsigma[l] = sigma42[l]/RegFunc(&p[l],fitpar);
3261 // create the graph the regularized cov. matrix
3262 TGraphErrors *gr42reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3263 TString regtitle42("C(C, #eta)/(A_meas+A_scatt/p^{B})");
3264 regtitle42.Prepend(part);
3265 TH2F *frame42reg = new TH2F("frame42reg",regtitle42.Data(),2,0.1,50,2,0,2);
3266 frame42reg->SetXTitle("p [GeV/c]");
3267 canv42->cd(2); gPad->SetLogx();
3275 // create the canvas
3276 TCanvas *canv44 = new TCanvas("canv44","c44",0,0,700,900);
3277 canv44->Divide(1,2);
3278 // create the graph for cov matrix
3279 TGraphErrors *gr44 = new TGraphErrors(kfitbins,p,mean44,ep,sigma44);
3280 TString title44("C(C,C)"); title44.Prepend(part);
3281 TH2F *frame44 = new TH2F("frame44",title44.Data(),2,0.1,50,2,0,2e-9);
3282 frame44->SetXTitle("p [GeV/c]");
3283 canv44->cd(1); gPad->SetLogx();
3286 // Sets initial values for parameters
3287 func->SetParameters(1.8e-10,5.8e-11,2.);
3288 // Fit points in range defined by function
3289 gr44->Fit("RegFunc","R,Q");
3290 func->GetParameters(fitpar);
3291 for(Int_t i=0; i<3; i++) fitRes(8,i)=fitpar[i];
3292 for(Int_t l=0; l<kfitbins; l++) {
3293 rmean[l] = mean44[l]/RegFunc(&p[l],fitpar);
3294 rsigma[l] = sigma44[l]/RegFunc(&p[l],fitpar);
3296 // create the graph the regularized cov. matrix
3297 TGraphErrors *gr44reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3298 TString regtitle44("C(C,C)/(A_meas+A_scatt/p^{B})");
3299 regtitle44.Prepend(part);
3300 TH2F *frame44reg = new TH2F("frame44reg",regtitle44.Data(),2,0.1,50,2,0,2);
3301 frame44reg->SetXTitle("p [GeV/c]");
3302 canv44->cd(2); gPad->SetLogx();
3312 new(&fRegParPi) TMatrixD(fitRes);
3315 new(&fRegParKa) TMatrixD(fitRes);
3318 new(&fRegParPr) TMatrixD(fitRes);
3321 new(&fRegParEl) TMatrixD(fitRes);
3324 new(&fRegParMu) TMatrixD(fitRes);
3328 // write fit parameters to file
3329 WriteRegParams(outName,pdg);
3366 //-----------------------------------------------------------------------------
3367 Bool_t AliTPCtrackerParam::SelectedTrack(Double_t pt,Double_t eta) const {
3368 //-----------------------------------------------------------------------------
3369 // This function makes a selection according to TPC tracking efficiency
3370 //-----------------------------------------------------------------------------
3374 eff = fEff->GetValueAt(pt,eta);
3376 if(gRandom->Rndm() < eff) return kTRUE;
3380 //-----------------------------------------------------------------------------
3381 void AliTPCtrackerParam::SetParticle(Int_t pdg) {
3382 //-----------------------------------------------------------------------------
3383 // This function set efficiencies, pulls, etc... for the particle
3384 // specie of the current particle
3385 //-----------------------------------------------------------------------------
3389 fDBgrid = &fDBgridPi;
3392 fRegPar = &fRegParPi;
3393 fdEdxMean = &fdEdxMeanPi;
3394 fdEdxRMS = &fdEdxRMSPi;
3397 fDBgrid = &fDBgridKa;
3400 fRegPar = &fRegParKa;
3401 fdEdxMean = &fdEdxMeanKa;
3402 fdEdxRMS = &fdEdxRMSKa;
3405 fDBgrid = &fDBgridPr;
3408 fRegPar = &fRegParPr;
3409 fdEdxMean = &fdEdxMeanPr;
3410 fdEdxRMS = &fdEdxRMSPr;
3413 fDBgrid = &fDBgridEl;
3416 fRegPar = &fRegParEl;
3417 fdEdxMean = &fdEdxMeanEl;
3418 fdEdxRMS = &fdEdxRMSEl;
3421 fDBgrid = &fDBgridMu;
3424 fRegPar = &fRegParMu;
3425 fdEdxMean = &fdEdxMeanMu;
3426 fdEdxRMS = &fdEdxRMSMu;
3432 //-----------------------------------------------------------------------------
3433 void AliTPCtrackerParam::SmearTrack(Double_t *xx,Double_t *xxsm,TMatrixD cov)
3435 //-----------------------------------------------------------------------------
3436 // This function smears track parameters according to streched cov. matrix
3437 //-----------------------------------------------------------------------------
3438 Double_t xref=xxsm[0]; xxsm[0]=0;
3440 AliGausCorr *corgen = new AliGausCorr(cov,5);
3442 corgen->GetGaussN(corr);
3443 // check on fP2(ESD) = fX*fP4-fP2(TPC)
3444 // with fX=xref (not smeared), fP4=xx[4]+corr[4] e fP2=xx[2]+corr[2];
3445 // if fP2(ESD)^2 > 1 -> resmear...
3446 Double_t fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3447 while ( (fp2esd*fp2esd) > 1.0 ) {
3448 Warning("SmearTrack()","Badly smeared track, retrying...");
3449 corgen->GetGaussN(corr);
3450 fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3456 for(Int_t l=0;l<5;l++) xxsm[l] = xx[l]+corr[l];
3460 //-----------------------------------------------------------------------------
3461 Int_t AliTPCtrackerParam::WritedEdx(const Char_t *outName,Int_t pdg) {
3462 //-----------------------------------------------------------------------------
3463 // This function writes the dEdx parameters to the DB
3464 //-----------------------------------------------------------------------------
3467 const char *dirName="Pions";
3468 const char *meanName="dEdxMeanPi";
3469 const char *rmsName="dEdxRMSPi";
3473 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3474 } else { opt="update"; }
3479 meanName="dEdxMeanPi";
3480 rmsName="dEdxRMSPi";
3484 meanName="dEdxMeanKa";
3485 rmsName="dEdxRMSKa";
3489 meanName="dEdxMeanPr";
3490 rmsName="dEdxRMSPr";
3493 dirName="Electrons";
3494 meanName="dEdxMeanEl";
3495 rmsName="dEdxRMSEl";
3499 meanName="dEdxMeanMu";
3500 rmsName="dEdxRMSMu";
3504 TFile *outFile = new TFile(outName,opt);
3505 if(!gDirectory->cd("/dEdx")) {
3506 outFile->mkdir("dEdx");
3507 gDirectory->cd("/dEdx");
3509 TDirectory *dir2 = gDirectory->mkdir(dirName);
3511 fdEdxMean->SetName(meanName); fdEdxMean->Write();
3512 fdEdxRMS->SetName(rmsName); fdEdxRMS->Write();
3520 //-----------------------------------------------------------------------------
3521 Int_t AliTPCtrackerParam::WriteEffs(const Char_t *outName) {
3522 //-----------------------------------------------------------------------------
3523 // This function writes the TPC efficiencies to the DB
3524 //-----------------------------------------------------------------------------
3529 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3530 } else { opt="update"; }
3532 TFile *outFile = new TFile(outName,opt);
3534 outFile->mkdir("Efficiencies");
3535 gDirectory->cd("/Efficiencies");
3536 gDirectory->mkdir("Pions");
3537 gDirectory->mkdir("Kaons");
3538 gDirectory->mkdir("Protons");
3539 gDirectory->mkdir("Electrons");
3540 gDirectory->mkdir("Muons");
3542 gDirectory->cd("/Efficiencies/Pions");
3543 fEffPi.SetName("EffPi");
3545 gDirectory->cd("/Efficiencies/Kaons");
3546 fEffKa.SetName("EffKa");
3548 gDirectory->cd("/Efficiencies/Protons");
3549 fEffPr.SetName("EffPr");
3551 gDirectory->cd("/Efficiencies/Electrons");
3552 fEffEl.SetName("EffEl");
3554 gDirectory->cd("/Efficiencies/Muons");
3555 fEffMu.SetName("EffMu");
3564 //-----------------------------------------------------------------------------
3565 Int_t AliTPCtrackerParam::WritePulls(const Char_t *outName) {
3566 //-----------------------------------------------------------------------------
3567 // This function writes the pulls to the DB
3568 //-----------------------------------------------------------------------------
3572 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3573 } else { opt="update"; }
3575 TFile *outFile = new TFile(outName,opt);
3577 outFile->mkdir("Pulls");
3578 gDirectory->cd("/Pulls");
3579 gDirectory->mkdir("Pions");
3580 gDirectory->mkdir("Kaons");
3581 gDirectory->mkdir("Protons");
3582 gDirectory->mkdir("Electrons");
3583 gDirectory->mkdir("Muons");
3585 for(Int_t i=0;i<5;i++) {
3586 TString pi("PullsPi_"); pi+=i;
3587 TString ka("PullsKa_"); ka+=i;
3588 TString pr("PullsPr_"); pr+=i;
3589 TString el("PullsEl_"); el+=i;
3590 TString mu("PullsMu_"); mu+=i;
3591 fPullsPi[i].SetName(pi.Data());
3592 fPullsKa[i].SetName(ka.Data());
3593 fPullsPr[i].SetName(pr.Data());
3594 fPullsEl[i].SetName(el.Data());
3595 fPullsMu[i].SetName(mu.Data());
3596 gDirectory->cd("/Pulls/Pions");
3597 fPullsPi[i].Write();
3598 gDirectory->cd("/Pulls/Kaons");
3599 fPullsKa[i].Write();
3600 gDirectory->cd("/Pulls/Protons");
3601 fPullsPr[i].Write();
3602 gDirectory->cd("/Pulls/Electrons");
3603 fPullsEl[i].Write();
3604 gDirectory->cd("/Pulls/Muons");
3605 fPullsMu[i].Write();
3612 //-----------------------------------------------------------------------------
3613 Int_t AliTPCtrackerParam::WriteRegParams(const Char_t *outName,Int_t pdg) {
3614 //-----------------------------------------------------------------------------
3615 // This function writes the regularization parameters to the DB
3616 //-----------------------------------------------------------------------------
3619 const char *dirName="Pions";
3620 const char *keyName="RegPions";
3624 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3625 } else { opt="update"; }
3638 keyName="RegProtons";
3641 dirName="Electrons";
3642 keyName="RegElectrons";
3650 TFile *outFile = new TFile(outName,opt);
3651 if(!gDirectory->cd("/RegParams")) {
3652 outFile->mkdir("RegParams");
3653 gDirectory->cd("/RegParams");
3655 TDirectory *dir2 = gDirectory->mkdir(dirName);
3657 fRegPar->Write(keyName);
3665 //-----------------------------------------------------------------------------
3666 //*****************************************************************************
3667 //-----------------------------------------------------------------------------