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>
76 #include <TDatabasePDG.h>
81 //------ AliRoot headers ------
82 #include "AliGausCorr.h"
83 #include "AliTracker.h"
87 #include "AliRunLoader.h"
89 #include "AliTPCParamSR.h"
90 #include "AliTPCkineGrid.h"
91 #include "AliTPCtrack.h"
92 #include "AliTPCtrackerParam.h"
93 #include "AliTrackReference.h"
94 #include "AliESDtrack.h"
95 //-----------------------------
97 Double_t RegFunc(Double_t *x,Double_t *par) {
98 // This is the function used to regularize the covariance matrix
99 Double_t value = par[0]+par[1]/TMath::Power(x[0],par[2]);
103 // structure for DB building
113 Double_t dP0,dP1,dP2,dP3,dP4;
114 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
117 // cov matrix structure
119 Double_t c00,c10,c11,c20,c21,c22,c30,c31,c32,c33,c40,c41,c42,c43,c44;
122 ClassImp(AliTPCtrackerParam)
124 //-----------------------------------------------------------------------------
125 AliTPCtrackerParam::AliTPCtrackerParam(Int_t kcoll, Double_t kBz,
126 const char* evfoldname):TObject(),
127 fEvFolderName(evfoldname),
166 //-----------------------------------------------------------------------------
167 // This is the class conctructor
168 //-----------------------------------------------------------------------------
170 // fBz = kBz; // value of the z component of L3 field (Tesla)
171 // fColl = kcoll; // collision code (0: PbPb6000; 1: pp)
172 // fSelAndSmear = kTRUE; // by default selection and smearing are done
174 if(fBz!=0.4 && fBz!=0.5) {
175 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid field!\n Available: 0.4 or 0.5");
177 if(fColl!=0 && fColl!=1) {
178 Fatal("AliTPCtrackerParam","AliTPCtrackerParam::AliTPCtrackerParam: Invalid collision!\n Available: 0 -> PbPb6000\n 1 -> pp");
181 fDBfileName = gSystem->Getenv("ALICE_ROOT");
182 fDBfileName.Append("/TPC/CovMatrixDB_");
183 //fDBfileName = "CovMatrixDB_";
184 if(fColl==0) fDBfileName.Append("PbPb6000");
185 if(fColl==1) fDBfileName.Append("pp");
186 if(fBz==0.4) fDBfileName.Append("_B0.4T.root");
187 // use same DB for 0.4 and 0.5 T; for 0.5 T, correction done in CookTrack()
188 if(fBz==0.5) fDBfileName.Append("_B0.4T.root");
190 //-----------------------------------------------------------------------------
191 AliTPCtrackerParam::~AliTPCtrackerParam() {}
192 //____________________________________________________________________________
193 AliTPCtrackerParam::AliTPCtrackerParam( const AliTPCtrackerParam& p)
234 // dummy copy constructor
236 //----------------------------------------------------------------------------
237 AliTPCtrackerParam::AliTPCseedGeant::AliTPCseedGeant(
238 Double_t x,Double_t y,Double_t z,
239 Double_t px,Double_t py,Double_t pz,
253 //----------------------------------------------------------------------------
254 // Constructor of the geant seeds
255 //----------------------------------------------------------------------------
257 Double_t a = TMath::ATan2(y,x)*180./TMath::Pi();
259 fSector = (Int_t)(a/20.);
260 fAlpha = 10.+20.*fSector;
262 fAlpha *= TMath::Pi();
264 //-----------------------------------------------------------------------------
265 Int_t AliTPCtrackerParam::Init() {
266 //-----------------------------------------------------------------------------
267 // This function reads the DB from file
268 //-----------------------------------------------------------------------------
271 printf("+++\n+++ Reading DataBase from:%s\n+++\n+++\n",fDBfileName.Data());
272 // Read paramters from DB file
273 if(!ReadAllData(fDBfileName.Data())) {
274 printf("AliTPCtrackerParam::BuildTPCtracks: \
275 Could not read data from DB\n\n"); return 1;
278 } else printf("\n ! Creating ALL TRUE tracks at TPC inner radius !\n\n");
280 AliMagF *fiel = (AliMagF*)TGeoGlobalMagField::Instance()->GetField();
281 Double_t fieval=TMath::Abs((Double_t)fiel->SolenoidField()/10.);
282 printf("Magnetic field is %6.2f Tesla\n",fieval);
284 printf("AliTPCtrackerParam::BuildTPCtracks: Invalid field!");
285 printf("Field selected is: %f T\n",fBz);
286 printf("Field found on file is: %f T\n",fieval);
292 //-----------------------------------------------------------------------------
293 Int_t AliTPCtrackerParam::BuildTPCtracks(AliESDEvent *event) {
294 //-----------------------------------------------------------------------------
295 // This function creates the TPC parameterized tracks and writes them
296 // as AliESDtrack objects in the ESD event
297 //-----------------------------------------------------------------------------
300 if(!event) return -1;
302 AliRunLoader* rl = AliRunLoader::GetRunLoader(fEvFolderName);
304 Error("BuildTPCtracks","Can not get Run Loader from event folder named %s",
305 fEvFolderName.Data());
308 AliLoader* tpcloader = rl->GetLoader("TPCLoader");
309 if (tpcloader == 0x0) {
310 Error("BuildTPCtracks","Can not get TPC Loader from Run Loader.");
314 // Get gAlice object from file
315 if(!gAlice) rl->LoadgAlice();
317 rl->LoadKinematics();
318 tpcloader->LoadHits("read");
320 if(!(gAlice=rl->GetAliRun())) {
321 printf("Cannot get gAlice from Run Loader !\n");
326 AliTPC *tpc=(AliTPC*)gAlice->GetDetector("TPC");
329 AliTPCParam *digp=(AliTPCParam*)gDirectory->Get("75x40_100x60");
332 digp = new AliTPCParamSR();
334 else digp=(AliTPCParam*)gDirectory->Get("75x40_100x60_150x60");
336 if(!digp) { cerr<<"TPC parameters have not been found !\n"; return 1; }
340 AliTPCseedGeant *seed=0;
341 AliTPCtrack *tpctrack=0;
343 Int_t bin,label,pdg,charge;
345 Int_t nParticles,nSeeds,arrentr;
346 //Int_t nSel=0,nAcc=0;
348 Int_t evt=event->GetEventNumberInFile(); // This is most likely NOT the event number you'd like to use. It has nothing to do with the 'real' event number.
352 // array for TPC tracks
353 TObjArray tArray(20000);
355 // array for TPC seeds with geant info
356 TObjArray sArray(20000);
358 // get the particles stack
359 nParticles = (Int_t)gAlice->GetEvent(evt);
361 Bool_t *done = new Bool_t[nParticles];
362 Int_t *pdgCodes = new Int_t[nParticles];
364 // loop on particles and store pdg codes
365 for(Int_t l=0; l<nParticles; l++) {
366 part = (TParticle*)gAlice->GetMCApp()->Particle(l);
367 pdgCodes[l] = part->GetPdgCode();
371 printf("+++ Number of particles: %d\n",nParticles);
373 // Create the seeds for the TPC tracks at the inner radius of TPC
375 // Get TreeH with hits
376 TTree *th = tpcloader->TreeH();
377 MakeSeedsFromHits(tpc,th,sArray);
379 // Get TreeTR with track references
381 TTree *ttr = rl->TreeTR();
383 MakeSeedsFromRefs(ttr,sArray);
386 nSeeds = sArray.GetEntries();
387 printf("+++ Number of seeds: %d\n",nSeeds);
389 // loop over entries in sArray
390 for(Int_t l=0; l<nSeeds; l++) {
391 //if(l%1==0) printf(" --- Processing seed %d of %d ---\n",l,nSeeds);
393 seed = (AliTPCseedGeant*)sArray.At(l);
396 label = seed->GetLabel();
398 // check if this track has already been processed
399 if(done[label]) continue;
401 // PDG code & electric charge
402 pdg = pdgCodes[label];
403 if(pdg>200 || pdg==-11 || pdg==-13) { charge=1; }
404 else if(pdg<-200 || pdg==11 || pdg==13) { charge=-1; }
406 pdg = TMath::Abs(pdg);
407 if(pdg>3000) pdg=211;
409 if(fSelAndSmear) SetParticle(pdg);
412 sEta = seed->GetEta();
414 // Apply selection according to TPC efficiency
415 //if(TMath::Abs(pdg)==211) nAcc++;
416 if(fSelAndSmear && !SelectedTrack(sPt,sEta)) continue;
417 //if(TMath::Abs(pdg)==211) nSel++;
419 // create AliTPCtrack object
420 BuildTrack(seed,charge);
423 bin = fDBgrid->GetBin(sPt,sEta);
426 //fCovTree = &(fCovTreePi[bin]);
427 fCovTree = fCovTreePi[bin];
430 //fCovTree = &(fCovTreeKa[bin]);
431 fCovTree = fCovTreeKa[bin];
434 //fCovTree = &(fCovTreePr[bin]);
435 fCovTree = fCovTreePr[bin];
438 //fCovTree = &(fCovTreeEl[bin]);
439 fCovTree = fCovTreeEl[bin];
442 //fCovTree = &(fCovTreeMu[bin]);
443 fCovTree = fCovTreeMu[bin];
446 // deal with covariance matrix and smearing of parameters
449 // assign the track a dE/dx and make a rough PID
453 // put track in array
454 AliTPCtrack *iotrack = new AliTPCtrack(fTrack);
455 iotrack->SetLabel(label);
456 tArray.AddLast(iotrack);
457 // Mark track as "done" and register the pdg code
461 } // loop over entries in sArray
463 // sort array with TPC tracks (decreasing pT)
466 // convert to AliESDtrack and write to AliESD
467 arrentr = tArray.GetEntriesFast();
470 for(Int_t l=0; l<arrentr; l++) {
471 tpctrack=(AliTPCtrack*)tArray.UncheckedAt(l);
472 AliESDtrack ioESDtrack;
473 ioESDtrack.UpdateTrackParams(tpctrack,AliESDtrack::kTPCin);
475 wgts[0]=0.; wgts[1]=0.; wgts[2]=0.; wgts[3]=0.; wgts[4]=0.;
476 if(TMath::Abs(tpctrack->GetMass()-0.9)<0.1) {
478 } else if(TMath::Abs(tpctrack->GetMass()-0.5)<0.1) {
484 ioESDtrack.SetESDpid(wgts);
485 event->AddTrack(&ioESDtrack);
492 printf("+++ Number of TPC tracks: %d\n",tracks);
493 //cerr<<"Average Eff: "<<(Float_t)nSel/nAcc<<endl;
500 //-----------------------------------------------------------------------------
501 void AliTPCtrackerParam::AnalyzedEdx(const Char_t *outName,Int_t pdg) {
502 //-----------------------------------------------------------------------------
503 // This function computes the dE/dx for pions, kaons, protons and electrons,
504 // in the [pT,eta] bins.
505 // Input file is CovMatrix_AllEvts.root.
506 //-----------------------------------------------------------------------------
508 gStyle->SetOptStat(0);
509 gStyle->SetOptFit(10001);
511 const char *part="PIONS";
515 // create a chain with compared tracks
516 TChain *cmptrkchain = new ("cmptrktree");
517 cmptrkchain.Add("CovMatrix_AllEvts.root");
518 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
519 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
520 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
524 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
525 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
528 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
529 Int_t entries = (Int_t)cmptrktree->GetEntries();
530 cerr<<" Number of entries: "<<entries<<endl;
532 InitializeKineGrid("DB");
533 InitializeKineGrid("dEdx");
560 const Int_t knTotBins = fDBgrid->GetTotBins();
562 cerr<<" Fit bins: "<<knTotBins<<endl;
565 Int_t *n = new Int_t[knTotBins];
566 Double_t *p = new Double_t[knTotBins];
567 Double_t *ep = new Double_t[knTotBins];
568 Double_t *mean = new Double_t[knTotBins];
569 Double_t *sigma = new Double_t[knTotBins];
571 for(Int_t l=0; l<knTotBins; l++) {
572 n[l] = 1; // set to 1 to avoid divisions by 0
573 p[l] = mean[l] = sigma[l] = ep[l] = 0.;
576 // loop on chain entries for the mean
577 for(Int_t l=0; l<entries; l++) {
578 cmptrktree->GetEvent(l);
579 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
580 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
582 mean[bin] += cmptrk.dEdx;
584 } // loop on chain entries
586 for(Int_t l=0; l<knTotBins; l++) {
589 n[l] = 1; // set to 1 to avoid divisions by 0
592 // loop on chain entries for the sigma
593 for(Int_t l=0; l<entries; l++) {
594 cmptrktree->GetEvent(l);
595 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
596 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
597 if(cmptrk.p<1. && TMath::Abs(cmptrk.p-p[bin])>0.025) continue;
599 sigma[bin] += (cmptrk.dEdx-mean[bin])*(cmptrk.dEdx-mean[bin]);
600 } // loop on chain entries
602 for(Int_t l=0; l<knTotBins; l++) {
603 sigma[l] = TMath::Sqrt(sigma[l]/n[l]);
607 TCanvas *canv = new TCanvas("canv","dEdx",0,0,900,700);
609 // create the graph for dEdx vs p
610 TGraphErrors *gr = new TGraphErrors(knTotBins,p,mean,ep,sigma);
611 TString title(" : dE/dx vs momentum"); title.Prepend(part);
612 TH2F *frame = new TH2F("frame1",title.Data(),2,0.1,50,2,0,ymax);
613 frame->SetXTitle("p [GeV/c]");
614 frame->SetYTitle("dE/dx [a.u.]");
621 for(Int_t i=0; i<knTotBins; i++) {
622 fdEdxMeanPi.SetParam(i,mean[i]);
623 fdEdxRMSPi.SetParam(i,sigma[i]);
627 for(Int_t i=0; i<knTotBins; i++) {
628 fdEdxMeanKa.SetParam(i,mean[i]);
629 fdEdxRMSKa.SetParam(i,sigma[i]);
633 for(Int_t i=0; i<knTotBins; i++) {
634 fdEdxMeanPr.SetParam(i,mean[i]);
635 fdEdxRMSPr.SetParam(i,sigma[i]);
639 for(Int_t i=0; i<knTotBins; i++) {
640 fdEdxMeanEl.SetParam(i,mean[i]);
641 fdEdxRMSEl.SetParam(i,sigma[i]);
645 for(Int_t i=0; i<knTotBins; i++) {
646 fdEdxMeanMu.SetParam(i,mean[i]);
647 fdEdxRMSMu.SetParam(i,sigma[i]);
652 // write results to file
653 WritedEdx(outName,pdg);
663 //-----------------------------------------------------------------------------
664 void AliTPCtrackerParam::AnalyzePulls(const Char_t *outName) {
665 //-----------------------------------------------------------------------------
666 // This function computes the pulls for pions, kaons and electrons,
667 // in the [pT,eta] bins.
668 // Input file is CovMatrix_AllEvts.root.
669 // Output file is pulls.root.
670 //-----------------------------------------------------------------------------
673 // create a chain with compared tracks
674 TChain *cmptrkchain = new ("cmptrktree");
675 cmptrkchain.Add("CovMatrix_AllEvts.root");
676 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
677 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
678 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
682 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
683 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
686 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
687 Int_t entries = (Int_t)cmptrktree->GetEntries();
688 cerr<<" Number of entries: "<<entries<<endl;
691 Char_t hname[100], htitle[100];
694 AliTPCkineGrid pulls[5];
695 TH1F *hDum = new TH1F("name","title",100,-7.,7.);
696 TF1 *g = new TF1("g","gaus");
698 InitializeKineGrid("pulls");
699 InitializeKineGrid("DB");
703 // loop on the particles Pi,Ka,Pr,El,Mu
704 for(Int_t part=0; part<5; part++) {
709 cerr<<" Processing pions ...\n";
713 cerr<<" Processing kaons ...\n";
717 cerr<<" Processing protons ...\n";
721 cerr<<" Processing electrons ...\n";
725 cerr<<" Processing muons ...\n";
729 SetParticle(thisPdg);
731 for(Int_t i=0;i<5;i++) {
732 pulls[i].~AliTPCkineGrid();
733 new(&pulls[i]) AliTPCkineGrid(*(fPulls+i));
735 nTotBins = fDBgrid->GetTotBins();
736 cerr<<"nTotBins = "<<nTotBins<<endl;
738 // create histograms for the all the bins
745 hPulls0 = new TH1F[nTotBins];
746 hPulls1 = new TH1F[nTotBins];
747 hPulls2 = new TH1F[nTotBins];
748 hPulls3 = new TH1F[nTotBins];
749 hPulls4 = new TH1F[nTotBins];
752 for(Int_t i=0; i<nTotBins; i++) {
753 sprintf(hname,"hPulls0%d",i);
754 sprintf(htitle,"P0 pulls for bin %d",i);
755 hDum->SetName(hname); hDum->SetTitle(htitle);
757 sprintf(hname,"hPulls1%d",i);
758 sprintf(htitle,"P1 pulls for bin %d",i);
759 hDum->SetName(hname); hDum->SetTitle(htitle);
761 sprintf(hname,"hPulls2%d",i);
762 sprintf(htitle,"P2 pulls for bin %d",i);
763 hDum->SetName(hname); hDum->SetTitle(htitle);
765 sprintf(hname,"hPulls3%d",i);
766 sprintf(htitle,"P3 pulls for bin %d",i);
767 hDum->SetName(hname); hDum->SetTitle(htitle);
769 sprintf(hname,"hPulls4%d",i);
770 sprintf(htitle,"P4 pulls for bin %d",i);
771 hDum->SetName(hname); hDum->SetTitle(htitle);
775 // loop on chain entries
776 for(Int_t i=0; i<entries; i++) {
777 cmptrktree->GetEvent(i);
778 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
779 // fill histograms with the pulls
780 bin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
781 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
782 hPulls0[bin].Fill(cmptrk.dP0/TMath::Sqrt(cmptrk.c00));
783 hPulls1[bin].Fill(cmptrk.dP1/TMath::Sqrt(cmptrk.c11));
784 hPulls2[bin].Fill(cmptrk.dP2/TMath::Sqrt(cmptrk.c22));
785 hPulls3[bin].Fill(cmptrk.dP3/TMath::Sqrt(cmptrk.c33));
786 hPulls4[bin].Fill(cmptrk.dP4/TMath::Sqrt(cmptrk.c44));
787 } // loop on chain entries
789 // compute the sigma of the distributions
790 for(Int_t i=0; i<nTotBins; i++) {
791 if(hPulls0[i].GetEntries()>10) {
792 g->SetRange(-3.*hPulls0[i].GetRMS(),3.*hPulls0[i].GetRMS());
793 hPulls0[i].Fit("g","R,Q,N");
794 pulls[0].SetParam(i,g->GetParameter(2));
795 } else pulls[0].SetParam(i,-1.);
796 if(hPulls1[i].GetEntries()>10) {
797 g->SetRange(-3.*hPulls1[i].GetRMS(),3.*hPulls1[i].GetRMS());
798 hPulls1[i].Fit("g","R,Q,N");
799 pulls[1].SetParam(i,g->GetParameter(2));
800 } else pulls[1].SetParam(i,-1.);
801 if(hPulls2[i].GetEntries()>10) {
802 g->SetRange(-3.*hPulls2[i].GetRMS(),3.*hPulls2[i].GetRMS());
803 hPulls2[i].Fit("g","R,Q,N");
804 pulls[2].SetParam(i,g->GetParameter(2));
805 } else pulls[2].SetParam(i,-1.);
806 if(hPulls3[i].GetEntries()>10) {
807 g->SetRange(-3.*hPulls3[i].GetRMS(),3.*hPulls3[i].GetRMS());
808 hPulls3[i].Fit("g","R,Q,N");
809 pulls[3].SetParam(i,g->GetParameter(2));
810 } else pulls[3].SetParam(i,-1.);
811 if(hPulls4[i].GetEntries()>10) {
812 g->SetRange(-3.*hPulls4[i].GetRMS(),3.*hPulls4[i].GetRMS());
813 hPulls4[i].Fit("g","R,Q,N");
814 pulls[4].SetParam(i,g->GetParameter(2));
815 } else pulls[4].SetParam(i,-1.);
821 for(Int_t i=0;i<5;i++) {
822 fPullsPi[i].~AliTPCkineGrid();
823 new(&fPullsPi[i]) AliTPCkineGrid(pulls[i]);
827 for(Int_t i=0;i<5;i++) {
828 fPullsKa[i].~AliTPCkineGrid();
829 new(&fPullsKa[i]) AliTPCkineGrid(pulls[i]);
833 for(Int_t i=0;i<5;i++) {
834 fPullsPr[i].~AliTPCkineGrid();
835 new(&fPullsPr[i]) AliTPCkineGrid(pulls[i]);
839 for(Int_t i=0;i<5;i++) {
840 fPullsEl[i].~AliTPCkineGrid();
841 new(&fPullsEl[i]) AliTPCkineGrid(pulls[i]);
845 for(Int_t i=0;i<5;i++) {
846 fPullsMu[i].~AliTPCkineGrid();
847 new(&fPullsMu[i]) AliTPCkineGrid(pulls[i]);
848 //cerr<<" mu pulls "<<i<<" "<<fPullsMu[i].GetParam(0)<<endl;
859 } // loop on particle species
861 // write pulls to file
867 //-----------------------------------------------------------------------------
868 void AliTPCtrackerParam::AnalyzeResolutions(Int_t pdg) {
869 //-----------------------------------------------------------------------------
870 // This function computes the resolutions:
874 // as a function of Pt
875 // Input file is CovMatrix_AllEvts.root.
876 //-----------------------------------------------------------------------------
879 // create a chain with compared tracks
880 TChain *cmptrkchain = new ("cmptrktree");
881 cmptrkchain.Add("CovMatrix_AllEvts.root");
882 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
883 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
884 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
888 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
889 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
892 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
893 Int_t entries = (Int_t)cmptrktree->GetEntries();
894 cerr<<" Number of entries: "<<entries<<endl;
899 InitializeKineGrid("DB");
900 InitializeKineGrid("eff");
904 const Int_t knPtBins = fEff->GetPointsPt();
905 cerr<<"knPtBins = "<<knPtBins<<endl;
906 Double_t *dP0 = new Double_t[knPtBins];
907 Double_t *dP4 = new Double_t[knPtBins];
908 Double_t *dPtToPt = new Double_t[knPtBins];
909 Double_t *pt = new Double_t[knPtBins];
910 fEff->GetArrayPt(pt);
913 TH1F *hDumP0 = new TH1F("nameP0","dy",100,-0.3,0.3);
914 TH1F *hDumP4 = new TH1F("nameP4","dC",100,-0.0005,0.0005);
915 TH1F *hDumPt = new TH1F("namePt","dp_{T}/p_{T}",100,-0.5,0.5);
917 TF1 *g = new TF1("g","gaus");
919 // create histograms for the all the bins
924 hP0 = new TH1F[knPtBins];
925 hP4 = new TH1F[knPtBins];
926 hPt = new TH1F[knPtBins];
928 for(Int_t i=0; i<knPtBins; i++) {
934 // loop on chain entries
935 for(Int_t i=0; i<entries; i++) {
936 cmptrktree->GetEvent(i);
937 if(TMath::Abs(cmptrk.pdg)!=pdg) continue;
938 // fill histograms with the residuals
939 bin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
940 //cerr<<" pt "<<cmptrk.pt<<" eta "<<cmptrk.eta<<" bin "<<bin<<endl;
941 hP0[bin].Fill(cmptrk.dP0);
942 hP4[bin].Fill(cmptrk.dP4);
943 hPt[bin].Fill(cmptrk.dpt/cmptrk.pt);
944 } // loop on chain entries
947 TCanvas *cP0res = new TCanvas("cP0res","cP0res",0,0,1200,700);
949 TCanvas *cP4res = new TCanvas("cP4res","cP4res",0,0,1200,700);
951 TCanvas *cPtres = new TCanvas("cPtres","cPtres",0,0,1200,700);
955 for(Int_t i=0; i<knPtBins; i++) {
956 cP0res->cd(i+1); hP0[i].Draw();
957 cP4res->cd(i+1); hP4[i].Draw();
958 cPtres->cd(i+1); hPt[i].Draw();
962 // compute the sigma of the distributions
963 for(Int_t i=0; i<knPtBins; i++) {
964 if(hP0[i].GetEntries()>10) {
965 g->SetRange(-3.*hP0[i].GetRMS(),3.*hP0[i].GetRMS());
966 hP0[i].Fit("g","R,Q,N");
967 dP0[i] = g->GetParameter(2);
969 if(hP4[i].GetEntries()>10) {
970 g->SetRange(-3.*hP4[i].GetRMS(),3.*hP4[i].GetRMS());
971 hP4[i].Fit("g","R,Q,N");
972 dP4[i] = g->GetParameter(2);
974 if(hPt[i].GetEntries()>10) {
975 g->SetRange(-3.*hPt[i].GetRMS(),3.*hPt[i].GetRMS());
976 hPt[i].Fit("g","R,Q,N");
977 dPtToPt[i] = 100.*g->GetParameter(2);
978 } else dPtToPt[i] = 0.;
982 TGraph *grdP0 = new TGraph(knPtBins,pt,dP0);
983 TGraph *grdP4 = new TGraph(knPtBins,pt,dP4);
984 TGraph *grdPtToPt = new TGraph(knPtBins,pt,dPtToPt);
986 grdP0->SetMarkerStyle(20); grdP0->SetMarkerColor(2); grdP0->SetMarkerSize(1.5);
987 grdP4->SetMarkerStyle(21); grdP4->SetMarkerColor(3); grdP4->SetMarkerSize(1.5);
988 grdPtToPt->SetMarkerStyle(22); grdPtToPt->SetMarkerColor(4); grdPtToPt->SetMarkerSize(1.5);
991 gStyle->SetOptStat(0);
992 TCanvas *c1 = new TCanvas("c1","dP0",0,0,900,700);
997 TH2F *frame1 = new TH2F("frame1","y resolution VS p_{T} in TPC",2,0.1,30,2,0,0.1);
998 frame1->SetXTitle("p_{T} [GeV/c]");
999 frame1->SetYTitle("#sigma(y) [cm]");
1004 TCanvas *c2 = new TCanvas("c2","dP4",0,0,900,700);
1009 TH2F *frame2 = new TH2F("frame2","C resolution VS p_{T} in TPC",2,0.1,30,2,0,0.0001);
1010 frame2->SetXTitle("p_{T} [GeV/c]");
1011 frame2->SetYTitle("#sigma(C) [1/cm]");
1015 TCanvas *c3 = new TCanvas("c3","dPtToPt",0,0,900,700);
1021 TH2F *frame3 = new TH2F("frame3","Relative p_{T} resolution VS p_{T} in TPC",2,0.1,30,2,0.1,30.);
1022 frame3->SetXTitle("p_{T} [GeV/c]");
1023 frame3->SetYTitle("dp_{T}/p_{T} (%)");
1025 grdPtToPt->Draw("P");
1040 //-----------------------------------------------------------------------------
1041 void AliTPCtrackerParam::BuildTrack(AliTPCseedGeant *s,Int_t ch) {
1042 //-----------------------------------------------------------------------------
1043 // This function uses GEANT info to set true track parameters
1044 //-----------------------------------------------------------------------------
1045 Double_t xref = s->GetXL();
1046 Double_t xx[5],cc[15];
1047 cc[0]=cc[2]=cc[5]=cc[9]=cc[14]=0.;
1048 cc[1]=cc[3]=cc[4]=cc[6]=cc[7]=cc[8]=cc[10]=cc[11]=cc[12]=cc[13]=0.;
1051 TVector3 bfield(0.,0.,-fBz);
1054 // radius [cm] of track projection in (x,y)
1055 Double_t rho = s->GetPt()*100./0.299792458/TMath::Abs(bfield.Z());
1056 // center of track projection in local reference frame
1060 // position (local) and momentum (local) at the seed
1061 // in the bending plane (z=0)
1062 sPos.SetXYZ(s->GetXL(),s->GetYL(),0.);
1063 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.);
1064 TVector3 vrho = sMom.Cross(bfield);
1068 TVector3 vcenter = sPos+vrho;
1070 Double_t x0 = vcenter.X();
1072 // fX = xref X-coordinate of this track (reference plane)
1073 // fAlpha = Alpha Rotation angle the local (TPC sector)
1074 // fP0 = YL Y-coordinate of a track
1075 // fP1 = ZG Z-coordinate of a track
1076 // fP2 = sin(phi) sine of the (local) azimuthal angle
1077 // fP3 = Tgl tangent of the track momentum dip angle
1078 // fP4 = C track curvature
1081 xx[2] = ch/rho*(xref-x0);
1082 xx[3] = s->GetPz()/s->GetPt();
1085 // create the object AliTPCtrack
1086 AliTPCtrack track(xref,s->GetAlpha(),xx,cc,0);
1087 new(&fTrack) AliTPCtrack(track);
1091 //-----------------------------------------------------------------------------
1092 void AliTPCtrackerParam::CompareTPCtracks(
1094 const Char_t* galiceName,
1095 const Char_t* trkGeaName,
1096 const Char_t* trkKalName,
1097 const Char_t* covmatName,
1098 const Char_t* tpceffasciiName,
1099 const Char_t* tpceffrootName) {
1100 //-----------------------------------------------------------------------------
1101 // This function compares tracks from TPC Kalman Filter V2 with
1102 // geant tracks at TPC 1st hit. It gives:
1103 // - a tree with Kalman cov. matrix elements, resolutions, dEdx
1104 // - the efficiencies as a function of particle type, pT, eta
1105 //-----------------------------------------------------------------------------
1107 TFile *kalFile = TFile::Open(trkKalName);
1108 TFile *geaFile = TFile::Open(trkGeaName);
1109 TFile *galiceFile = TFile::Open(galiceName);
1111 // get the AliRun object
1112 AliRun *lAlice = (AliRun*)galiceFile->Get("gAlice");
1115 // create the tree for comparison results
1117 TTree *cmptrktree = new TTree("cmptrktree","results of track comparison");
1118 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");
1120 InitializeKineGrid("eff");
1121 InitializeKineGrid("DB");
1122 Int_t effBins = fEffPi.GetTotPoints();
1123 Int_t effBinsPt = fEffPi.GetPointsPt();
1124 Double_t *pt = new Double_t[effBinsPt];
1125 fEffPi.GetArrayPt(pt);
1132 Int_t pi=0,ka=0,mu=0,el=0,pr=0;
1133 Int_t *geaPi = new Int_t[effBins];
1134 Int_t *geaKa = new Int_t[effBins];
1135 Int_t *geaPr = new Int_t[effBins];
1136 Int_t *geaEl = new Int_t[effBins];
1137 Int_t *geaMu = new Int_t[effBins];
1138 Int_t *kalPi = new Int_t[effBins];
1139 Int_t *kalKa = new Int_t[effBins];
1140 Int_t *kalPr = new Int_t[effBins];
1141 Int_t *kalEl = new Int_t[effBins];
1142 Int_t *kalMu = new Int_t[effBins];
1143 Float_t *effPi = new Float_t[effBins];
1144 Float_t *effKa = new Float_t[effBins];
1145 Float_t *effPr = new Float_t[effBins];
1146 Float_t *effEl = new Float_t[effBins];
1147 Float_t *effMu = new Float_t[effBins];
1149 for(Int_t j=0; j<effBins; j++) {
1150 geaPi[j]=geaKa[j]=geaPr[j]=geaEl[j]=geaMu[j]=0;
1151 kalPi[j]=kalKa[j]=kalPr[j]=kalEl[j]=kalMu[j]=0;
1152 effPi[j]=effKa[j]=effPr[j]=effEl[j]=effMu[j]=-1.;
1157 // loop on events in file
1158 for(Int_t evt=0; evt<nEvents; evt++) {
1159 cerr<<"\n --- Reading tracks for event "<<evt<<" ---\n\n";
1160 sprintf(tname,"TreeT_TPC_%d",evt);
1162 // particles from TreeK
1163 const Int_t knparticles = lAlice->GetEvent(evt);
1165 Int_t *kalLab = new Int_t[knparticles];
1166 for(Int_t i=0; i<knparticles; i++) kalLab[i] = -1;
1169 // tracks from Kalman
1170 TTree *kaltree=(TTree*)kalFile->Get(tname);
1171 if(!kaltree) continue;
1172 AliTPCtrack *kaltrack=new AliTPCtrack;
1173 kaltree->SetBranchAddress("tracks",&kaltrack);
1174 Int_t kalEntries = (Int_t)kaltree->GetEntries();
1176 // tracks from 1st hit
1177 TTree *geatree=(TTree*)geaFile->Get(tname);
1178 if(!geatree) continue;
1179 AliTPCtrack *geatrack=new AliTPCtrack;
1180 geatree->SetBranchAddress("tracks",&geatrack);
1181 Int_t geaEntries = (Int_t)geatree->GetEntries();
1183 cerr<<"+++\n+++ Number of tracks: TPC Kalman = "<<kalEntries<<endl<<"+++ TPC 1st hit = "<<geaEntries<<endl<<"+++\n";
1185 // set pointers for TPC tracks:
1186 // the entry number of the track labelled l is stored in kalLab[l]
1187 Int_t fake=0,mult=0;
1188 for (Int_t j=0; j<kalEntries; j++) {
1189 kaltree->GetEvent(j);
1190 if(kaltrack->GetLabel()>=0) {
1191 if(kalLab[kaltrack->GetLabel()]!=-1) mult++;
1192 kalLab[kaltrack->GetLabel()] = j;
1197 cerr<<"+++ Number of fake tracks in TPC Kalman: "<<fake<<endl;
1198 cerr<<"+++ Number of multiply found tracks in TPC Kalman: "<<mult<<endl;
1201 // Read the labels of the seeds
1204 Bool_t *hasSeed = new Bool_t[knparticles];
1205 for(Int_t i=0; i<knparticles; i++) hasSeed[i] = kFALSE;
1206 sprintf(sname,"seedLabels.%d.dat",evt);
1207 FILE *seedFile = fopen(sname,"r");
1209 ncol = fscanf(seedFile,"%d",&sLabel);
1211 if(sLabel>0) hasSeed[sLabel]=kTRUE;
1216 cerr<<"Doing track comparison...\n";
1217 // loop on tracks at 1st hit
1218 for(Int_t j=0; j<geaEntries; j++) {
1219 geatree->GetEvent(j);
1221 label = geatrack->GetLabel();
1222 part = (TParticle*)lAlice->GetMCApp()->Particle(label);
1224 // use only injected tracks with fixed values of pT
1225 ptgener = part->Pt();
1227 for(Int_t l=0; l<fEffPi.GetPointsPt(); l++) {
1228 if(TMath::Abs(ptgener-pt[l])<0.01) usethis = kTRUE;
1230 if(!usethis) continue;
1232 // check if it has the seed
1233 //if(!hasSeed[label]) continue;
1236 // check if track is entirely contained in a TPC sector
1237 Bool_t out = kFALSE;
1238 for(Int_t l=0; l<10; l++) {
1239 Double_t x = 85. + (250.-85.)*(Double_t)l/9.;
1240 //cerr<<"x "<<x<<" X "<<geatrack->GetX()<<endl;
1241 Double_t y = geatrack->GetY() + (
1242 TMath::Sqrt(1-(geatrack->GetC()*geatrack->GetX()-geatrack->GetEta())*
1243 (geatrack->GetC()*geatrack->GetX()-geatrack->GetEta()))
1244 -TMath::Sqrt(1-(geatrack->GetC()*x-geatrack->GetEta())*
1245 (geatrack->GetC()*x-geatrack->GetEta()))
1248 //cerr<<"y "<<y<<" Y "<<geatrack->GetY()<<endl;
1249 if(y > 0.8*x*TMath::Tan(TMath::Pi()/18)) { out = kTRUE; break; }
1254 cmptrk.pdg = part->GetPdgCode();
1255 cmptrk.eta = part->Eta();
1256 cmptrk.r = TMath::Sqrt(part->Vx()*part->Vx()+part->Vy()*part->Vy());
1258 cmptrk.pt = geatrack->Pt();
1259 cmptrk.cosl = TMath::Cos(TMath::ATan(geatrack->GetTgl()));
1260 cmptrk.p = cmptrk.pt/cmptrk.cosl;
1263 bin = fDBgridPi.GetBin(cmptrk.pt,cmptrk.eta);
1265 if(abs(cmptrk.pdg)==211) geaPi[bin]++;
1266 if(abs(cmptrk.pdg)==321) geaKa[bin]++;
1267 if(abs(cmptrk.pdg)==2212) geaPr[bin]++;
1268 if(abs(cmptrk.pdg)==11) geaEl[bin]++;
1269 if(abs(cmptrk.pdg)==13) geaMu[bin]++;
1272 // check if there is the corresponding track in the TPC kalman and get it
1273 if(kalLab[label]==-1) continue;
1274 kaltree->GetEvent(kalLab[label]);
1276 // and go on only if it has xref = 84.57 cm (inner pad row)
1277 if(kaltrack->GetX()>90.) continue;
1279 if(abs(cmptrk.pdg)==211) { kalPi[bin]++; pi++; }
1280 if(abs(cmptrk.pdg)==321) { kalKa[bin]++; ka++; }
1281 if(abs(cmptrk.pdg)==2212) { kalPr[bin]++; pr++; }
1282 if(abs(cmptrk.pdg)==11) { kalEl[bin]++; el++; }
1283 if(abs(cmptrk.pdg)==13) { kalMu[bin]++; mu++; }
1285 kaltrack->PropagateTo(geatrack->GetX(),1.e-9,0.);
1287 cmptrk.dEdx = kaltrack->GetdEdx();
1289 // compute errors on parameters
1290 dAlpha = kaltrack->GetAlpha()-geatrack->GetAlpha();
1291 if(TMath::Abs(dAlpha)>0.1) { cerr<<" ! WRONG SECTOR !\n"; continue; }
1293 cmptrk.dP0 = kaltrack->GetY()-geatrack->GetY();
1294 cmptrk.dP1 = kaltrack->GetZ()-geatrack->GetZ();
1295 cmptrk.dP2 = kaltrack->GetSnp()-geatrack->GetSnp();
1296 cmptrk.dP3 = kaltrack->GetTgl()-geatrack->GetTgl();
1297 cmptrk.dP4 = kaltrack->GetC()-geatrack->GetC();
1298 cmptrk.dpt = 1/kaltrack->GetSigned1Pt()-1/geatrack->GetSigned1Pt();
1300 // get covariance matrix
1301 // beware: lines 3 and 4 in the matrix are inverted!
1302 //kaltrack->GetCovariance(cc);
1304 cmptrk.c00 = kaltrack->GetSigmaY2();
1305 cmptrk.c10 = kaltrack->GetSigmaZY();
1306 cmptrk.c11 = kaltrack->GetSigmaZ2();
1307 cmptrk.c20 = kaltrack->GetSigmaSnpY();
1308 cmptrk.c21 = kaltrack->GetSigmaSnpY();
1309 cmptrk.c22 = kaltrack->GetSigmaSnp2();
1310 cmptrk.c30 = kaltrack->GetSigmaTglY();
1311 cmptrk.c31 = kaltrack->GetSigmaTglZ();
1312 cmptrk.c32 = kaltrack->GetSigmaTglSnp();
1313 cmptrk.c33 = kaltrack->GetSigmaTgl2();
1314 cmptrk.c40 = kaltrack->GetSigma1PtY();
1315 cmptrk.c41 = kaltrack->GetSigma1PtZ();
1316 cmptrk.c42 = kaltrack->GetSigma1PtSnp();
1317 cmptrk.c43 = kaltrack->GetSigma1PtTgl();
1318 cmptrk.c44 = kaltrack->GetSigma1Pt2();
1323 } // loop on tracks at TPC 1st hit
1326 //delete [] hasSeed;
1328 } // end loop on events in file
1331 cerr<<"+++\n+++ Number of compared tracks: "<<pi+ka+el+mu+pr<<endl;
1332 cerr<<"+++ Pions: "<<pi<<", Kaons: "<<ka<<", Protons : "<<pr<<", Electrons: "<<el<<", Muons: "<<mu<<endl;
1335 // Write tree to file
1336 TFile *outfile = new TFile(covmatName,"recreate");
1337 cmptrktree->Write();
1341 // Write efficiencies to ascii file
1342 FILE *effFile = fopen(tpceffasciiName,"w");
1343 //fprintf(effFile,"%d\n",kalEntries);
1344 for(Int_t j=0; j<effBins; j++) {
1345 if(geaPi[j]>=100) effPi[j]=(Float_t)kalPi[j]/geaPi[j];
1346 if(geaKa[j]>=100) effKa[j]=(Float_t)kalKa[j]/geaKa[j];
1347 if(geaPr[j]>=100) effPr[j]=(Float_t)kalPr[j]/geaPr[j];
1348 if(geaEl[j]>=500) effEl[j]=(Float_t)kalEl[j]/geaEl[j];
1349 if(geaMu[j]>=100) effMu[j]=(Float_t)kalMu[j]/geaMu[j];
1350 fprintf(effFile,"%f %f %f %f %f\n",effPi[j],effKa[j],effPr[j],effEl[j],effMu[j]);
1353 for(Int_t j=0; j<effBins; j++) {
1354 fprintf(effFile,"%d %d %d %d %d\n",geaPi[j],geaKa[j],geaPr[j],geaEl[j],geaMu[j]);
1356 for(Int_t j=0; j<effBins; j++) {
1357 fprintf(effFile,"%d %d %d %d %d\n",kalPi[j],kalKa[j],kalPr[j],kalEl[j],kalMu[j]);
1361 // Write efficiencies to root file
1362 for(Int_t j=0; j<effBins; j++) {
1363 fEffPi.SetParam(j,(Double_t)effPi[j]);
1364 fEffKa.SetParam(j,(Double_t)effKa[j]);
1365 fEffPr.SetParam(j,(Double_t)effPr[j]);
1366 fEffEl.SetParam(j,(Double_t)effEl[j]);
1367 fEffMu.SetParam(j,(Double_t)effMu[j]);
1369 WriteEffs(tpceffrootName);
1371 // delete AliRun object
1372 delete lAlice; lAlice=0;
1374 // close all input files
1377 galiceFile->Close();
1398 //-----------------------------------------------------------------------------
1399 void AliTPCtrackerParam::CookdEdx(Double_t pt,Double_t eta) {
1400 //-----------------------------------------------------------------------------
1401 // This function assigns the track a dE/dx and makes a rough PID
1402 //-----------------------------------------------------------------------------
1404 Double_t mean = fdEdxMean->GetValueAt(pt,eta);
1405 Double_t rms = fdEdxRMS->GetValueAt(pt,eta);
1407 Double_t dEdx = gRandom->Gaus(mean,rms);
1409 fTrack.SetdEdx(dEdx);
1411 AliTPCtrackParam t(fTrack);
1414 Double_t p = TMath::Sqrt(1.+t.GetTgl()*t.GetTgl())*pt;
1416 Double_t massPi = (Double_t)TDatabasePDG::Instance()->GetParticle(211)->Mass();
1417 Double_t massKa = (Double_t)TDatabasePDG::Instance()->GetParticle(321)->Mass();
1418 Double_t massPr = (Double_t)TDatabasePDG::Instance()->GetParticle(2212)->Mass();
1421 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1422 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1424 if (dEdx < 39.+ 12./p/p) {
1425 t.AssignMass(massKa); new(&fTrack) AliTPCtrack(t); return;
1427 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1431 if (dEdx < 39.+ 12./(p+0.25)/(p+0.25)) {
1432 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1434 t.AssignMass(massPr); new(&fTrack) AliTPCtrack(t); return;
1437 t.AssignMass(massPi); new(&fTrack) AliTPCtrack(t); return;
1439 //-----------------------------------------------------------------------------
1440 void AliTPCtrackerParam::CookTrack(Double_t pt,Double_t eta) {
1441 //-----------------------------------------------------------------------------
1442 // This function deals with covariance matrix and smearing
1443 //-----------------------------------------------------------------------------
1447 Double_t trkKine[1],trkRegPar[3];
1448 Double_t xref,alpha,xx[5],xxsm[5],cc[15];
1451 fCovTree->SetBranchAddress("matrix",&covmat);
1453 // get random entry from the tree
1454 treeEntries = (Int_t)fCovTree->GetEntries();
1455 fCovTree->GetEvent(gRandom->Integer(treeEntries));
1457 // get P and Cosl from track
1458 cosl = TMath::Cos(TMath::ATan(fTrack.GetTgl()));
1459 p = fTrack.Pt()/cosl;
1463 // get covariance matrix from regularized matrix
1464 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(0,l);
1465 cc[0] = covmat.c00*RegFunc(trkKine,trkRegPar);
1467 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(1,l);
1468 cc[2] = covmat.c11*RegFunc(trkKine,trkRegPar);
1469 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(2,l);
1470 cc[3] = covmat.c20*RegFunc(trkKine,trkRegPar);
1472 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(3,l);
1473 cc[5] = covmat.c22*RegFunc(trkKine,trkRegPar);
1475 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(4,l);
1476 cc[7] = covmat.c31*RegFunc(trkKine,trkRegPar);
1478 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(5,l);
1479 cc[9] = covmat.c33*RegFunc(trkKine,trkRegPar);
1480 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(6,l);
1481 cc[10]= covmat.c40*RegFunc(trkKine,trkRegPar);
1483 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(7,l);
1484 cc[12]= covmat.c42*RegFunc(trkKine,trkRegPar);
1486 for(Int_t l=0;l<3;l++) trkRegPar[l] = (*fRegPar)(8,l);
1487 cc[14]= covmat.c44*RegFunc(trkKine,trkRegPar);
1490 TMatrixD covMatSmear(5,5);
1491 covMatSmear = GetSmearingMatrix(cc,pt,eta);
1493 // get track original parameters
1494 xref =fTrack.GetX();
1495 alpha=fTrack.GetAlpha();
1496 xx[0]=fTrack.GetY();
1497 xx[1]=fTrack.GetZ();
1498 xx[2]=fTrack.GetSnp();
1499 xx[3]=fTrack.GetTgl();
1500 xx[4]=fTrack.GetC();
1502 // use smearing matrix to smear the original parameters
1504 SmearTrack(xx,xxsm,covMatSmear);
1506 AliTPCtrack track(xref,alpha,xxsm,cc,0);
1507 new(&fTrack) AliTPCtrack(track);
1511 //-----------------------------------------------------------------------------
1512 void AliTPCtrackerParam::DrawEffs(const Char_t* inName,Int_t pdg) {
1513 //-----------------------------------------------------------------------------
1514 // This function draws the TPC efficiencies in the [pT,eta] bins
1515 //-----------------------------------------------------------------------------
1520 const Int_t kn = fEff->GetPointsPt();
1521 Double_t *effsA = new Double_t[kn];
1522 Double_t *effsB = new Double_t[kn];
1523 Double_t *effsC = new Double_t[kn];
1524 Double_t *pt = new Double_t[kn];
1526 fEff->GetArrayPt(pt);
1527 for(Int_t i=0;i<kn;i++) {
1528 effsA[i] = fEff->GetParam(i,0);
1529 effsB[i] = fEff->GetParam(i,1);
1530 effsC[i] = fEff->GetParam(i,2);
1533 TGraph *grA = new TGraph(kn,pt,effsA);
1534 TGraph *grB = new TGraph(kn,pt,effsB);
1535 TGraph *grC = new TGraph(kn,pt,effsC);
1537 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1538 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1539 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1541 TString title("Distribution of the TPC efficiencies");
1544 title.Prepend("PIONS - ");
1547 title.Prepend("KAONS - ");
1550 title.Prepend("PROTONS - ");
1553 title.Prepend("ELECTRONS - ");
1556 title.Prepend("MUONS - ");
1561 gStyle->SetOptStat(0);
1562 TCanvas *c = new TCanvas("c","effs",0,0,900,700);
1567 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,1);
1568 frame->SetXTitle("p_{T} [GeV/c]");
1574 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1575 leg->AddEntry(grA,"|#eta|<0.3","p");
1576 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1577 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1578 leg->SetFillColor(0);
1588 //-----------------------------------------------------------------------------
1589 void AliTPCtrackerParam::DrawPulls(const Char_t* inName,Int_t pdg,
1591 //-----------------------------------------------------------------------------
1592 // This function draws the pulls in the [pT,eta] bins
1593 //-----------------------------------------------------------------------------
1598 const Int_t kn = (fPulls+par)->GetPointsPt();
1599 Double_t *pullsA = new Double_t[kn];
1600 Double_t *pullsB = new Double_t[kn];
1601 Double_t *pullsC = new Double_t[kn];
1602 Double_t *pt = new Double_t[kn];
1603 (fPulls+par)->GetArrayPt(pt);
1604 for(Int_t i=0;i<kn;i++) {
1605 pullsA[i] = (fPulls+par)->GetParam(i,0);
1606 pullsB[i] = (fPulls+par)->GetParam(i,1);
1607 pullsC[i] = (fPulls+par)->GetParam(i,2);
1610 TGraph *grA = new TGraph(kn,pt,pullsA);
1611 TGraph *grB = new TGraph(kn,pt,pullsB);
1612 TGraph *grC = new TGraph(kn,pt,pullsC);
1614 grA->SetMarkerStyle(20); grA->SetMarkerColor(2); grA->SetMarkerSize(1.5);
1615 grB->SetMarkerStyle(21); grB->SetMarkerColor(3); grB->SetMarkerSize(1.5);
1616 grC->SetMarkerStyle(22); grC->SetMarkerColor(4); grC->SetMarkerSize(1.5);
1618 TString title("Distribution of the pulls: ");
1621 title.Prepend("PIONS - ");
1624 title.Prepend("KAONS - ");
1627 title.Prepend("PROTONS - ");
1630 title.Prepend("ELECTRONS - ");
1633 title.Prepend("MUONS - ");
1644 title.Append(" #eta");
1647 title.Append("tg #lambda");
1654 gStyle->SetOptStat(0);
1655 TCanvas *c = new TCanvas("c","pulls",0,0,900,700);
1660 TH2F *frame = new TH2F("frame",title.Data(),2,0.1,30,2,0,2);
1661 frame->SetXTitle("p_{T} [GeV/c]");
1667 TLegend *leg = new TLegend(0.2,0.2,0.4,0.4);
1668 leg->AddEntry(grA,"|#eta|<0.3","p");
1669 leg->AddEntry(grB,"0.3<|#eta|<0.6","p");
1670 leg->AddEntry(grC,"0.6<|#eta|<0.9","p");
1671 leg->SetFillColor(0);
1681 //-----------------------------------------------------------------------------
1682 TMatrixD AliTPCtrackerParam::GetSmearingMatrix(Double_t* cc,Double_t pt,
1683 Double_t eta) const {
1684 //-----------------------------------------------------------------------------
1685 // This function stretches the covariance matrix according to the pulls
1686 //-----------------------------------------------------------------------------
1688 TMatrixD covMat(5,5);
1691 covMat(1,0)=cc[1]; covMat(0,1)=covMat(1,0);
1693 covMat(2,0)=cc[3]; covMat(0,2)=covMat(2,0);
1694 covMat(2,1)=cc[4]; covMat(1,2)=covMat(2,1);
1696 covMat(3,0)=cc[6]; covMat(0,3)=covMat(3,0);
1697 covMat(3,1)=cc[7]; covMat(1,3)=covMat(3,1);
1698 covMat(3,2)=cc[8]; covMat(2,3)=covMat(3,2);
1700 covMat(4,0)=cc[10]; covMat(0,4)=covMat(4,0);
1701 covMat(4,1)=cc[11]; covMat(1,4)=covMat(4,1);
1702 covMat(4,2)=cc[12]; covMat(2,4)=covMat(4,2);
1703 covMat(4,3)=cc[13]; covMat(3,4)=covMat(4,3);
1707 TMatrixD stretchMat(5,5);
1708 for(Int_t k=0;k<5;k++) {
1709 for(Int_t l=0;l<5;l++) {
1714 for(Int_t i=0;i<5;i++) {
1715 stretchMat(i,i) = (fPulls+i)->GetValueAt(pt,eta);
1716 if(stretchMat(i,i)==0.) stretchMat(i,i) = 1.;
1719 TMatrixD mat(stretchMat,TMatrixD::kMult,covMat);
1720 TMatrixD covMatSmear(mat,TMatrixD::kMult,stretchMat);
1724 //-----------------------------------------------------------------------------
1725 void AliTPCtrackerParam::InitializeKineGrid(Option_t* which) {
1726 //-----------------------------------------------------------------------------
1727 // This function initializes ([pt,eta] points) the data members AliTPCkineGrid
1728 // which = "DB" -> initialize fDBgrid... members
1729 // "eff" -> initialize fEff... members
1730 // "pulls" -> initialize fPulls... members
1731 // "dEdx" -> initialize fdEdx... members
1732 //-----------------------------------------------------------------------------
1734 const char *db = strstr(which,"DB");
1735 const char *eff = strstr(which,"eff");
1736 const char *pulls = strstr(which,"pulls");
1737 const char *dEdx = strstr(which,"dEdx");
1740 Int_t nEta=0, nPt=0;
1742 Double_t etaPoints[2] = {0.3,0.6};
1743 Double_t etaBins[3] = {0.15,0.45,0.75};
1745 Double_t ptPoints[9] = {0.4,0.6,0.8,1.2,1.7,3.,5.,8.,15.};
1746 Double_t ptBins[10] = {0.3,0.5,0.7,1.,1.5,2.,4.,6.,10.,20.};
1749 Double_t *eta=0,*pt=0;
1763 AliTPCkineGrid *dummy=0;
1766 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1767 new(&fDBgridPi) AliTPCkineGrid(*dummy);
1768 new(&fDBgridKa) AliTPCkineGrid(*dummy);
1769 new(&fDBgridPr) AliTPCkineGrid(*dummy);
1770 new(&fDBgridEl) AliTPCkineGrid(*dummy);
1771 new(&fDBgridMu) AliTPCkineGrid(*dummy);
1775 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1776 new(&fEffPi) AliTPCkineGrid(*dummy);
1777 new(&fEffKa) AliTPCkineGrid(*dummy);
1778 new(&fEffPr) AliTPCkineGrid(*dummy);
1779 new(&fEffEl) AliTPCkineGrid(*dummy);
1780 new(&fEffMu) AliTPCkineGrid(*dummy);
1784 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1785 for(Int_t i=0;i<5;i++) new(&fPullsPi[i]) AliTPCkineGrid(*dummy);
1786 for(Int_t i=0;i<5;i++) new(&fPullsKa[i]) AliTPCkineGrid(*dummy);
1787 for(Int_t i=0;i<5;i++) new(&fPullsPr[i]) AliTPCkineGrid(*dummy);
1788 for(Int_t i=0;i<5;i++) new(&fPullsEl[i]) AliTPCkineGrid(*dummy);
1789 for(Int_t i=0;i<5;i++) new(&fPullsMu[i]) AliTPCkineGrid(*dummy);
1793 dummy = new AliTPCkineGrid(nPt,nEta,pt,eta);
1794 new(&fdEdxMeanPi) AliTPCkineGrid(*dummy);
1795 new(&fdEdxRMSPi) AliTPCkineGrid(*dummy);
1796 new(&fdEdxMeanKa) AliTPCkineGrid(*dummy);
1797 new(&fdEdxRMSKa) AliTPCkineGrid(*dummy);
1798 new(&fdEdxMeanPr) AliTPCkineGrid(*dummy);
1799 new(&fdEdxRMSPr) AliTPCkineGrid(*dummy);
1800 new(&fdEdxMeanEl) AliTPCkineGrid(*dummy);
1801 new(&fdEdxRMSEl) AliTPCkineGrid(*dummy);
1802 new(&fdEdxMeanMu) AliTPCkineGrid(*dummy);
1803 new(&fdEdxRMSMu) AliTPCkineGrid(*dummy);
1809 //-----------------------------------------------------------------------------
1810 void AliTPCtrackerParam::MakeDataBase() {
1811 //-----------------------------------------------------------------------------
1812 // This function creates the DB file and store in it:
1813 // - TPC Efficiencies for pi,ka,pr,el,mu (AliTPCkineGrid class)
1814 // - Pulls for pi,ka,el (AliTPCkineGrid class)
1815 // - Regularization parameters for pi,ka,el (TMatrixD class)
1816 // - dE/dx parameterization for pi,ka,pr,el (AliTPCkineGrid class)
1817 // - Regularized cov. matrices for pi,ka,el (COVMATRIX structure)
1818 //-----------------------------------------------------------------------------
1820 // define some file names
1821 const char *effFile ="TPCeff.root";
1822 const char *pullsFile ="pulls.root";
1823 const char *regPiFile ="regPi.root";
1824 const char *regKaFile ="regKa.root";
1825 const char *regPrFile ="regPr.root";
1826 const char *regElFile ="regEl.root";
1827 const char *regMuFile ="regMu.root";
1828 const char *dEdxPiFile="dEdxPi.root";
1829 const char *dEdxKaFile="dEdxKa.root";
1830 const char *dEdxPrFile="dEdxPr.root";
1831 const char *dEdxElFile="dEdxEl.root";
1832 const char *dEdxMuFile="dEdxMu.root";
1833 const char *cmFile ="CovMatrix_AllEvts.root";
1835 Char_t *cmFile1 ="CovMatrix_AllEvts_1.root";
1836 Char_t *cmFile2 ="CovMatrix_AllEvts_2.root";
1837 Char_t *cmFile3 ="CovMatrix_AllEvts_3.root";
1840 // store the effieciencies
1842 WriteEffs(fDBfileName.Data());
1845 ReadPulls(pullsFile);
1846 WritePulls(fDBfileName.Data());
1848 //store the regularization parameters
1849 ReadRegParams(regPiFile,211);
1850 WriteRegParams(fDBfileName.Data(),211);
1851 ReadRegParams(regKaFile,321);
1852 WriteRegParams(fDBfileName.Data(),321);
1853 ReadRegParams(regPrFile,2212);
1854 WriteRegParams(fDBfileName.Data(),2212);
1855 ReadRegParams(regElFile,11);
1856 WriteRegParams(fDBfileName.Data(),11);
1857 ReadRegParams(regMuFile,13);
1858 WriteRegParams(fDBfileName.Data(),13);
1860 // store the dEdx parameters
1861 ReaddEdx(dEdxPiFile,211);
1862 WritedEdx(fDBfileName.Data(),211);
1863 ReaddEdx(dEdxKaFile,321);
1864 WritedEdx(fDBfileName.Data(),321);
1865 ReaddEdx(dEdxPrFile,2212);
1866 WritedEdx(fDBfileName.Data(),2212);
1867 ReaddEdx(dEdxElFile,11);
1868 WritedEdx(fDBfileName.Data(),11);
1869 ReaddEdx(dEdxMuFile,13);
1870 WritedEdx(fDBfileName.Data(),13);
1874 // store the regularized covariance matrices
1876 InitializeKineGrid("DB");
1878 const Int_t knBinsPi = fDBgridPi.GetTotBins();
1879 const Int_t knBinsKa = fDBgridKa.GetTotBins();
1880 const Int_t knBinsPr = fDBgridPr.GetTotBins();
1881 const Int_t knBinsEl = fDBgridEl.GetTotBins();
1882 const Int_t knBinsMu = fDBgridMu.GetTotBins();
1885 // create the trees for cov. matrices
1887 TTree *covTreePi1 = NULL;
1888 covTreePi1 = new TTree[knBinsPi];
1890 TTree *covTreeKa1 = NULL;
1891 covTreeKa1 = new TTree[knBinsKa];
1892 // trees for protons
1893 TTree *covTreePr1 = NULL;
1894 covTreePr1 = new TTree[knBinsPr];
1895 // trees for electrons
1896 TTree *covTreeEl1 = NULL;
1897 covTreeEl1 = new TTree[knBinsEl];
1899 TTree *covTreeMu1 = NULL;
1900 covTreeMu1 = new TTree[knBinsMu];
1902 Char_t hname[100], htitle[100];
1906 for(Int_t i=0; i<knBinsPi; i++) {
1907 sprintf(hname,"CovTreePi_bin%d",i);
1908 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1909 covTreePi1[i].SetName(hname); covTreePi1[i].SetTitle(htitle);
1910 covTreePi1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",5000000);
1912 for(Int_t i=0; i<knBinsKa; i++) {
1913 sprintf(hname,"CovTreeKa_bin%d",i);
1914 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1915 covTreeKa1[i].SetName(hname); covTreeKa1[i].SetTitle(htitle);
1916 covTreeKa1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1918 for(Int_t i=0; i<knBinsPr; i++) {
1919 sprintf(hname,"CovTreePr_bin%d",i);
1920 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1921 covTreePr1[i].SetName(hname); covTreePr1[i].SetTitle(htitle);
1922 covTreePr1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1924 for(Int_t i=0; i<knBinsEl; i++) {
1925 sprintf(hname,"CovTreeEl_bin%d",i);
1926 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1927 covTreeEl1[i].SetName(hname); covTreeEl1[i].SetTitle(htitle);
1928 covTreeEl1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1930 for(Int_t i=0; i<knBinsMu; i++) {
1931 sprintf(hname,"CovTreeMu_bin%d",i);
1932 sprintf(htitle,"Tree with cov matrix elements for bin %d",i);
1933 covTreeMu1[i].SetName(hname); covTreeMu1[i].SetTitle(htitle);
1934 covTreeMu1[i].Branch("matrix",&covmat,"c00/D:c10:c11:c20:c21:c22:c30:c31:c32:c33:c40:c41:c42:c43:c44",1000000);
1938 // create the chain with the compared tracks
1939 TChain *cmptrktree = new TChain("cmptrktree");
1940 cmptrkchain.Add(cmFile1);
1941 cmptrkchain.Add(cmFile2);
1942 cmptrkchain.Add(cmFile3);
1945 TFile *infile = TFile::Open(cmFile);
1946 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
1949 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
1950 Int_t entries = (Int_t)cmptrktree->GetEntries();
1951 cerr<<" Number of entries: "<<entries<<endl;
1953 Int_t trkPdg,trkBin;
1954 Double_t trkKine[1],trkRegPar[3];
1955 Int_t *nPerBinPi = new Int_t[knBinsPi];
1956 for(Int_t k=0;k<knBinsPi;k++) nPerBinPi[k]=0;
1957 Int_t *nPerBinKa = new Int_t[knBinsKa];
1958 for(Int_t k=0;k<knBinsKa;k++) nPerBinKa[k]=0;
1959 Int_t *nPerBinMu = new Int_t[knBinsMu];
1960 for(Int_t k=0;k<knBinsMu;k++) nPerBinMu[k]=0;
1961 Int_t *nPerBinEl = new Int_t[knBinsEl];
1962 for(Int_t k=0;k<knBinsEl;k++) nPerBinEl[k]=0;
1963 Int_t *nPerBinPr = new Int_t[knBinsPr];
1964 for(Int_t k=0;k<knBinsPr;k++) nPerBinPr[k]=0;
1966 // loop on chain entries
1967 for(Int_t l=0; l<entries; l++) {
1968 if(l % 10000 == 0) cerr<<"--- Processing track "<<l<<" of "<<entries<<" ---"<<endl;
1970 cmptrktree->GetEvent(l);
1972 trkPdg = TMath::Abs(cmptrk.pdg);
1973 // use only pions, kaons, protons, electrons, muons
1974 if(trkPdg!=211 && trkPdg!=321 && trkPdg!=2212 && trkPdg!=11 && trkPdg!=13) continue;
1975 SetParticle(trkPdg);
1976 trkBin = fDBgrid->GetBin(cmptrk.pt,cmptrk.eta);
1977 //cerr<<cmptrk.pt<<" "<<cmptrk.eta<<" "<<trkBin<<endl;
1979 if(trkPdg==211 && nPerBinPi[trkBin]>=5000) continue;
1980 if(trkPdg==321 && nPerBinKa[trkBin]>=5000) continue;
1981 if(trkPdg==2212 && nPerBinPr[trkBin]>=5000) continue;
1982 if(trkPdg==11 && nPerBinEl[trkBin]>=5000) continue;
1983 if(trkPdg==13 && nPerBinMu[trkBin]>=5000) continue;
1985 trkKine[0] = cmptrk.p;
1987 // get regularized covariance matrix
1988 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(0,k);
1989 covmat.c00 = cmptrk.c00/RegFunc(trkKine,trkRegPar);
1990 covmat.c10 = cmptrk.c10;
1991 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(1,k);
1992 covmat.c11 = cmptrk.c11/RegFunc(trkKine,trkRegPar);
1993 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(2,k);
1994 covmat.c20 = cmptrk.c20/RegFunc(trkKine,trkRegPar);
1995 covmat.c21 = cmptrk.c21;
1996 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(3,k);
1997 covmat.c22 = cmptrk.c22/RegFunc(trkKine,trkRegPar);
1998 covmat.c30 = cmptrk.c30;
1999 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(4,k);
2000 covmat.c31 = cmptrk.c31/RegFunc(trkKine,trkRegPar);
2001 covmat.c32 = cmptrk.c32;
2002 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(5,k);
2003 covmat.c33 = cmptrk.c33/RegFunc(trkKine,trkRegPar);
2004 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(6,k);
2005 covmat.c40 = cmptrk.c40/RegFunc(trkKine,trkRegPar);
2006 covmat.c41 = cmptrk.c41;
2007 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(7,k);
2008 covmat.c42 = cmptrk.c42/RegFunc(trkKine,trkRegPar);
2009 covmat.c43 = cmptrk.c43;
2010 for(Int_t k=0;k<3;k++) trkRegPar[k] = (*fRegPar)(8,k);
2011 covmat.c44 = cmptrk.c44/RegFunc(trkKine,trkRegPar);
2016 covTreePi1[trkBin].Fill();
2017 nPerBinPi[trkBin]++;
2020 covTreeKa1[trkBin].Fill();
2021 nPerBinKa[trkBin]++;
2023 case 2212: // protons
2024 covTreePr1[trkBin].Fill();
2025 nPerBinPr[trkBin]++;
2027 case 11: // electrons
2028 covTreeEl1[trkBin].Fill();
2029 nPerBinEl[trkBin]++;
2032 covTreeMu1[trkBin].Fill();
2033 nPerBinMu[trkBin]++;
2036 } // loop on chain entries
2038 // store all trees the DB file
2039 TFile *dbfile = new TFile(fDBfileName.Data(),"update");
2040 dbfile->mkdir("CovMatrices");
2041 gDirectory->cd("/CovMatrices");
2042 gDirectory->mkdir("Pions");
2043 gDirectory->mkdir("Kaons");
2044 gDirectory->mkdir("Protons");
2045 gDirectory->mkdir("Electrons");
2046 gDirectory->mkdir("Muons");
2048 gDirectory->cd("/CovMatrices/Pions");
2049 fDBgridPi.SetName("DBgridPi"); fDBgridPi.Write();
2050 for(Int_t i=0;i<knBinsPi;i++) covTreePi1[i].Write();
2052 gDirectory->cd("/CovMatrices/Kaons");
2053 fDBgridKa.SetName("DBgridKa"); fDBgridKa.Write();
2054 for(Int_t i=0;i<knBinsKa;i++) covTreeKa1[i].Write();
2056 gDirectory->cd("/CovMatrices/Protons");
2057 fDBgridPr.SetName("DBgridPr"); fDBgridPr.Write();
2058 for(Int_t i=0;i<knBinsPr;i++) covTreePr1[i].Write();
2060 gDirectory->cd("/CovMatrices/Electrons");
2061 fDBgridEl.SetName("DBgridEl"); fDBgridEl.Write();
2062 for(Int_t i=0;i<knBinsEl;i++) covTreeEl1[i].Write();
2064 gDirectory->cd("/CovMatrices/Muons");
2065 fDBgridMu.SetName("DBgridMu"); fDBgridMu.Write();
2066 for(Int_t i=0;i<knBinsMu;i++) covTreeMu1[i].Write();
2069 delete [] nPerBinPi;
2070 delete [] nPerBinKa;
2071 delete [] nPerBinPr;
2072 delete [] nPerBinEl;
2073 delete [] nPerBinMu;
2077 //-----------------------------------------------------------------------------
2078 void AliTPCtrackerParam::MakeSeedsFromHits(AliTPC *tpc,TTree *th,
2079 TObjArray &seedArray) const {
2080 //-----------------------------------------------------------------------------
2081 // This function makes the seeds for tracks from the 1st hits in the TPC
2082 //-----------------------------------------------------------------------------
2084 Double_t xg,yg,zg,px,py,pz,pt;
2086 Int_t nTracks=(Int_t)th->GetEntries();
2088 cout<<"+++ Number of \"primary tracks\"(entries in TreeH): "<<nTracks<<
2091 AliTPChit *tpcHit=0;
2093 // loop over entries in TreeH
2094 for(Int_t l=0; l<nTracks; l++) {
2095 if(l%1000==0) cerr<<" --- Processing primary track "
2096 <<l<<" of "<<nTracks<<" ---\r";
2100 tpcHit=(AliTPChit*)tpc->FirstHit(-1);
2101 for( ; tpcHit; tpcHit=(AliTPChit*)tpc->NextHit() ) {
2102 if(tpcHit->fQ !=0.) continue;
2103 // Get particle momentum at hit
2104 px=tpcHit->X(); py=tpcHit->Y(); pz=tpcHit->Z();
2106 pt=TMath::Sqrt(px*px+py*py);
2107 // reject hits with Pt<mag*0.45 GeV/c
2108 if(pt<(fBz*0.45)) continue;
2111 label=tpcHit->Track();
2113 if((tpcHit=(AliTPChit*)tpc->NextHit())==0) break;
2114 if(tpcHit->fQ != 0.) continue;
2115 // Get global coordinates of hit
2116 xg=tpcHit->X(); yg=tpcHit->Y(); zg=tpcHit->Z();
2117 if(TMath::Sqrt(xg*xg+yg*yg)>90.) continue;
2120 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2122 // reject tracks which are not in the TPC acceptance
2123 if(!ioseed->InTPCAcceptance()) { delete ioseed; continue; }
2125 // put seed in array
2126 seedArray.AddLast(ioseed);
2129 } // loop over entries in TreeH
2133 //-----------------------------------------------------------------------------
2134 void AliTPCtrackerParam::MakeSeedsFromRefs(TTree *ttr,
2135 TObjArray &seedArray) const {
2136 //-----------------------------------------------------------------------------
2137 // This function makes the seeds for tracks from the track references
2138 //-----------------------------------------------------------------------------
2140 Double_t xg,yg,zg,px,py,pz,pt;
2144 TClonesArray *tkRefArray = new TClonesArray("AliTrackReference");
2146 TBranch *b =(TBranch*)ttr->GetBranch("TPC");
2147 if(!b) {cerr<<"TPC branch of TreeTR not found"<<endl; return; }
2148 b->SetAddress(&tkRefArray);
2149 Int_t nTkRef = (Int_t)b->GetEntries();
2150 cerr<<"+++ Number of entries in TreeTR(TPC): "<<nTkRef<<"\n";
2152 // loop on track references
2153 for(Int_t l=0; l<nTkRef; l++){
2154 //if(l%1000==0) cerr<<" --- Processing primary track "
2155 // <<l<<" of "<<nTkRef<<" ---\r";
2156 if(!b->GetEvent(l)) continue;
2157 nnn = tkRefArray->GetEntriesFast();
2159 if(nnn <= 0) continue;
2160 for(k=0; k<nnn; k++) {
2161 AliTrackReference *tkref = (AliTrackReference*)tkRefArray->UncheckedAt(k);
2169 label = tkref->GetTrack();
2171 pt=TMath::Sqrt(px*px+py*py);
2172 // reject hits with Pt<mag*0.45 GeV/c
2173 if(pt<(fBz*0.45)) continue;
2176 AliTPCseedGeant *ioseed = new AliTPCseedGeant(xg,yg,zg,px,py,pz,label);
2178 // reject if not at the inner part of TPC
2179 if(TMath::Abs(ioseed->GetXL()-83.8) > 0.2) {
2180 //cerr<<"not at TPC inner part: XL = "<<ioseed->GetXL()<<endl;
2181 delete ioseed; continue;
2184 // reject tracks which are not in the TPC acceptance
2185 if(!ioseed->InTPCAcceptance()) {
2186 delete ioseed; continue;
2189 // put seed in array
2190 seedArray.AddLast(ioseed);
2195 } // loop on track references
2202 //-----------------------------------------------------------------------------
2203 void AliTPCtrackerParam::MergeEvents(Int_t evFirst,Int_t evLast) {
2204 //-----------------------------------------------------------------------------
2205 // This function: 1) merges the files from track comparison
2206 // (beware: better no more than 100 events per file)
2207 // 2) computes the average TPC efficiencies
2208 //-----------------------------------------------------------------------------
2210 const char *outName="TPCeff.root";
2212 // merge files with tracks
2213 cerr<<" ******** MERGING FILES **********\n\n";
2215 // create the chain for the tree of compared tracks
2216 TChain ch1("cmptrktree");
2217 TChain ch2("cmptrktree");
2218 TChain ch3("cmptrktree");
2220 for(Int_t j=evFirst; j<=evLast; j++) {
2221 cerr<<"Processing event "<<j<<endl;
2223 TString covName("CovMatrix.");
2225 covName.Append(".root");
2227 if(gSystem->AccessPathName(covName.Data(),kFileExists)) continue;
2230 if(j<=100) ch1.Add(covName.Data());
2231 if(j>100 && j<=200) ch2.Add(covName.Data());
2232 if(j>200) ch3.Add(covName.Data());
2236 // merge chain in one file
2238 covOut = new TFile("CovMatrix_AllEvts_1.root","recreate");
2239 ch1.Merge(covOut,1000000000);
2242 covOut = new TFile("CovMatrix_AllEvts_2.root","recreate");
2243 ch2.Merge(covOut,1000000000);
2246 covOut = new TFile("CovMatrix_AllEvts_3.root","recreate");
2247 ch3.Merge(covOut,1000000000);
2253 cerr<<" ***** EFFICIENCIES ******\n\n";
2255 ReadEffs("TPCeff.1.root");
2257 Int_t n = fEffPi.GetTotPoints();
2258 Double_t *avEffPi = new Double_t[n];
2259 Double_t *avEffKa = new Double_t[n];
2260 Double_t *avEffPr = new Double_t[n];
2261 Double_t *avEffEl = new Double_t[n];
2262 Double_t *avEffMu = new Double_t[n];
2263 Int_t *evtsPi = new Int_t[n];
2264 Int_t *evtsKa = new Int_t[n];
2265 Int_t *evtsPr = new Int_t[n];
2266 Int_t *evtsEl = new Int_t[n];
2267 Int_t *evtsMu = new Int_t[n];
2269 for(Int_t j=0; j<n; j++) {
2270 avEffPi[j]=avEffKa[j]=avEffPr[j]=avEffEl[j]=avEffMu[j]=0.;
2271 evtsPi[j]=evtsKa[j]=evtsPr[j]=evtsEl[j]=evtsMu[j]=0;
2274 for(Int_t j=evFirst; j<=evLast; j++) {
2275 cerr<<"Processing event "<<j<<endl;
2277 TString effName("TPCeff.");
2279 effName.Append(".root");
2281 if(gSystem->AccessPathName(effName.Data(),kFileExists)) continue;
2283 ReadEffs(effName.Data());
2285 for(Int_t k=0; k<n; k++) {
2286 if(fEffPi.GetParam(k)>=0.) {avEffPi[k]+=fEffPi.GetParam(k); evtsPi[k]++;}
2287 if(fEffKa.GetParam(k)>=0.) {avEffKa[k]+=fEffKa.GetParam(k); evtsKa[k]++;}
2288 if(fEffPr.GetParam(k)>=0.) {avEffPr[k]+=fEffPr.GetParam(k); evtsPr[k]++;}
2289 if(fEffEl.GetParam(k)>=0.) {avEffEl[k]+=fEffEl.GetParam(k); evtsEl[k]++;}
2290 if(fEffMu.GetParam(k)>=0.) {avEffMu[k]+=fEffMu.GetParam(k); evtsMu[k]++;}
2295 // compute average efficiencies
2296 for(Int_t j=0; j<n; j++) {
2297 if(evtsPi[j]==0) evtsPi[j]++;
2298 fEffPi.SetParam(j,(Double_t)avEffPi[j]/evtsPi[j]);
2299 if(evtsKa[j]==0) evtsKa[j]++;
2300 fEffKa.SetParam(j,(Double_t)avEffKa[j]/evtsKa[j]);
2301 if(evtsPr[j]==0) evtsPr[j]++;
2302 fEffPr.SetParam(j,(Double_t)avEffPr[j]/evtsPr[j]);
2303 if(evtsEl[j]==0) evtsEl[j]++;
2304 fEffEl.SetParam(j,(Double_t)avEffEl[j]/evtsEl[j]);
2305 if(evtsMu[j]==0) evtsMu[j]++;
2306 fEffMu.SetParam(j,(Double_t)avEffMu[j]/evtsMu[j]);
2309 // write efficiencies to a file
2325 //-----------------------------------------------------------------------------
2326 Int_t AliTPCtrackerParam::ReadAllData(const Char_t* inName) {
2327 //-----------------------------------------------------------------------------
2328 // This function reads all parameters from the DB
2329 //-----------------------------------------------------------------------------
2331 if(!ReadEffs(inName)) return 0;
2332 if(!ReadPulls(inName)) return 0;
2333 if(!ReadRegParams(inName,211)) return 0;
2334 if(!ReadRegParams(inName,321)) return 0;
2335 if(!ReadRegParams(inName,2212)) return 0;
2336 if(!ReadRegParams(inName,11)) return 0;
2337 if(!ReadRegParams(inName,13)) return 0;
2338 if(!ReaddEdx(inName,211)) return 0;
2339 if(!ReaddEdx(inName,321)) return 0;
2340 if(!ReaddEdx(inName,2212)) return 0;
2341 if(!ReaddEdx(inName,11)) return 0;
2342 if(!ReaddEdx(inName,13)) return 0;
2343 if(!ReadDBgrid(inName)) return 0;
2344 if(!ReadCovTrees(inName)) return 0;
2348 //-----------------------------------------------------------------------------
2349 Int_t AliTPCtrackerParam::ReadCovTrees(const Char_t* inName) {
2350 //-----------------------------------------------------------------------------
2351 // This function reads the covariance matrix trees from the DB
2352 //-----------------------------------------------------------------------------
2354 if(gSystem->AccessPathName(inName,kFileExists)) {
2355 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2360 TFile *inFile = TFile::Open(inName);
2363 Int_t nBinsPi = fDBgridPi.GetTotBins();
2364 for(Int_t l=0; l<nBinsPi; l++) {
2365 str = "/CovMatrices/Pions/CovTreePi_bin";
2367 fCovTreePi[l] = (TTree*)inFile->Get(str.Data());
2368 //fCovTree = (TTree*)inFile->Get(str.Data());
2369 //fCovTreePi[l] = new TTree(*fCovTree);
2371 Int_t nBinsKa = fDBgridKa.GetTotBins();
2372 for(Int_t l=0; l<nBinsKa; l++) {
2373 str = "/CovMatrices/Kaons/CovTreeKa_bin";
2375 fCovTreeKa[l] = (TTree*)inFile->Get(str.Data());
2376 //fCovTree = (TTree*)inFile->Get(str.Data());
2377 //fCovTreeKa[l] = new TTree(*fCovTree);
2379 Int_t nBinsPr = fDBgridPr.GetTotBins();
2380 for(Int_t l=0; l<nBinsPr; l++) {
2382 str = "/CovMatrices/Pions/CovTreePi_bin";
2384 str = "/CovMatrices/Protons/CovTreePr_bin";
2387 fCovTreePr[l] = (TTree*)inFile->Get(str.Data());
2388 //fCovTree = (TTree*)inFile->Get(str.Data());
2389 //fCovTreePr[l] = new TTree(*fCovTree);
2391 Int_t nBinsEl = fDBgridEl.GetTotBins();
2392 for(Int_t l=0; l<nBinsEl; l++) {
2393 str = "/CovMatrices/Electrons/CovTreeEl_bin";
2395 fCovTreeEl[l] = (TTree*)inFile->Get(str.Data());
2396 //fCovTree = (TTree*)inFile->Get(str.Data());
2397 //fCovTreeEl[l] = new TTree(*fCovTree);
2399 Int_t nBinsMu = fDBgridMu.GetTotBins();
2400 for(Int_t l=0; l<nBinsMu; l++) {
2402 str = "/CovMatrices/Pions/CovTreePi_bin";
2404 str = "/CovMatrices/Muons/CovTreeMu_bin";
2407 fCovTreeMu[l] = (TTree*)inFile->Get(str.Data());
2408 //fCovTree = (TTree*)inFile->Get(str.Data());
2409 //fCovTreeMu[l] = new TTree(*fCovTree);
2416 //-----------------------------------------------------------------------------
2417 Int_t AliTPCtrackerParam::ReaddEdx(const Char_t* inName,Int_t pdg) {
2418 //-----------------------------------------------------------------------------
2419 // This function reads the dEdx parameters from the DB
2420 //-----------------------------------------------------------------------------
2422 if(gSystem->AccessPathName(inName,kFileExists)) {
2423 cerr<<"AliTPCtrackerParam::ReaddEdx: "<<inName<<" not found\n";
2426 TFile *inFile = TFile::Open(inName);
2429 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2430 fdEdxMeanPi.~AliTPCkineGrid();
2431 new(&fdEdxMeanPi) AliTPCkineGrid(*fdEdxMean);
2432 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2433 fdEdxRMSPi.~AliTPCkineGrid();
2434 new(&fdEdxRMSPi) AliTPCkineGrid(*fdEdxRMS);
2437 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxMeanKa");
2438 fdEdxMeanKa.~AliTPCkineGrid();
2439 new(&fdEdxMeanKa) AliTPCkineGrid(*fdEdxMean);
2440 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Kaons/dEdxRMSKa");
2441 fdEdxRMSKa.~AliTPCkineGrid();
2442 new(&fdEdxRMSKa) AliTPCkineGrid(*fdEdxRMS);
2445 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxMeanPr");
2446 fdEdxMeanPr.~AliTPCkineGrid();
2447 new(&fdEdxMeanPr) AliTPCkineGrid(*fdEdxMean);
2448 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Protons/dEdxRMSPr");
2449 fdEdxRMSPr.~AliTPCkineGrid();
2450 new(&fdEdxRMSPr) AliTPCkineGrid(*fdEdxRMS);
2453 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxMeanEl");
2454 fdEdxMeanEl.~AliTPCkineGrid();
2455 new(&fdEdxMeanEl) AliTPCkineGrid(*fdEdxMean);
2456 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Electrons/dEdxRMSEl");
2457 fdEdxRMSEl.~AliTPCkineGrid();
2458 new(&fdEdxRMSEl) AliTPCkineGrid(*fdEdxRMS);
2462 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxMeanPi");
2463 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Pions/dEdxRMSPi");
2465 fdEdxMean = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxMeanMu");
2466 fdEdxRMS = (AliTPCkineGrid*)inFile->Get("/dEdx/Muons/dEdxRMSMu");
2468 fdEdxMeanMu.~AliTPCkineGrid();
2469 new(&fdEdxMeanMu) AliTPCkineGrid(*fdEdxMean);
2470 fdEdxRMSMu.~AliTPCkineGrid();
2471 new(&fdEdxRMSMu) AliTPCkineGrid(*fdEdxRMS);
2478 //-----------------------------------------------------------------------------
2479 Int_t AliTPCtrackerParam::ReadDBgrid(const Char_t* inName) {
2480 //-----------------------------------------------------------------------------
2481 // This function reads the kine grid from the DB
2482 //-----------------------------------------------------------------------------
2484 if(gSystem->AccessPathName(inName,kFileExists)) {
2485 cerr<<"AliTPCtrackerParam::ReadCovMatrices: "<<inName<<" not found\n";
2488 TFile *inFile = TFile::Open(inName);
2490 // first read the DB grid for the different particles
2491 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2492 fDBgridPi.~AliTPCkineGrid();
2493 new(&fDBgridPi) AliTPCkineGrid(*fDBgrid);
2494 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Kaons/DBgridKa");
2495 fDBgridKa.~AliTPCkineGrid();
2496 new(&fDBgridKa) AliTPCkineGrid(*fDBgrid);
2498 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2500 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Protons/DBgridPr");
2502 fDBgridPr.~AliTPCkineGrid();
2503 new(&fDBgridPr) AliTPCkineGrid(*fDBgrid);
2504 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Electrons/DBgridEl");
2505 fDBgridEl.~AliTPCkineGrid();
2506 new(&fDBgridEl) AliTPCkineGrid(*fDBgrid);
2508 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Pions/DBgridPi");
2510 fDBgrid = (AliTPCkineGrid*)inFile->Get("/CovMatrices/Muons/DBgridMu");
2512 fDBgridMu.~AliTPCkineGrid();
2513 new(&fDBgridMu) AliTPCkineGrid(*fDBgrid);
2519 //-----------------------------------------------------------------------------
2520 Int_t AliTPCtrackerParam::ReadEffs(const Char_t* inName) {
2521 //-----------------------------------------------------------------------------
2522 // This function reads the TPC efficiencies from the DB
2523 //-----------------------------------------------------------------------------
2525 if(gSystem->AccessPathName(inName,kFileExists)) {
2526 cerr<<"AliTPCtrackerParam::ReadEffs: "<<inName<<" not found\n";
2529 TFile *inFile = TFile::Open(inName);
2531 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Pions/EffPi");
2532 fEffPi.~AliTPCkineGrid();
2533 new(&fEffPi) AliTPCkineGrid(*fEff);
2534 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Kaons/EffKa");
2535 fEffKa.~AliTPCkineGrid();
2536 new(&fEffKa) AliTPCkineGrid(*fEff);
2537 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Protons/EffPr");
2538 fEffPr.~AliTPCkineGrid();
2539 new(&fEffPr) AliTPCkineGrid(*fEff);
2540 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Electrons/EffEl");
2541 fEffEl.~AliTPCkineGrid();
2542 new(&fEffEl) AliTPCkineGrid(*fEff);
2543 fEff = (AliTPCkineGrid*)inFile->Get("/Efficiencies/Muons/EffMu");
2544 fEffMu.~AliTPCkineGrid();
2545 new(&fEffMu) AliTPCkineGrid(*fEff);
2551 //-----------------------------------------------------------------------------
2552 Int_t AliTPCtrackerParam::ReadPulls(const Char_t* inName) {
2553 //-----------------------------------------------------------------------------
2554 // This function reads the pulls from the DB
2555 //-----------------------------------------------------------------------------
2557 if(gSystem->AccessPathName(inName,kFileExists)) {
2558 cerr<<"AliTPCtrackerParam::ReadPulls: "<<inName<<" not found\n";
2561 TFile *inFile = TFile::Open(inName);
2563 for(Int_t i=0; i<5; i++) {
2564 TString pi("/Pulls/Pions/PullsPi_"); pi+=i;
2565 TString ka("/Pulls/Kaons/PullsKa_"); ka+=i;
2566 TString pr("/Pulls/Protons/PullsPr_"); pr+=i;
2567 TString el("/Pulls/Electrons/PullsEl_"); el+=i;
2568 TString mu("/Pulls/Muons/PullsMu_"); mu+=i;
2570 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2571 fPullsPi[i].~AliTPCkineGrid();
2572 new(&fPullsPi[i]) AliTPCkineGrid(*fPulls);
2574 fPulls = (AliTPCkineGrid*)inFile->Get(ka.Data());
2575 fPullsKa[i].~AliTPCkineGrid();
2576 new(&fPullsKa[i]) AliTPCkineGrid(*fPulls);
2579 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2581 fPulls = (AliTPCkineGrid*)inFile->Get(pr.Data());
2583 fPullsPr[i].~AliTPCkineGrid();
2584 new(&fPullsPr[i]) AliTPCkineGrid(*fPulls);
2586 fPulls = (AliTPCkineGrid*)inFile->Get(el.Data());
2587 fPullsEl[i].~AliTPCkineGrid();
2588 new(&fPullsEl[i]) AliTPCkineGrid(*fPulls);
2591 fPulls = (AliTPCkineGrid*)inFile->Get(pi.Data());
2593 fPulls = (AliTPCkineGrid*)inFile->Get(mu.Data());
2595 fPullsMu[i].~AliTPCkineGrid();
2596 new(&fPullsMu[i]) AliTPCkineGrid(*fPulls);
2603 //-----------------------------------------------------------------------------
2604 Int_t AliTPCtrackerParam::ReadRegParams(const Char_t* inName,Int_t pdg) {
2605 //-----------------------------------------------------------------------------
2606 // This function reads the regularization parameters from the DB
2607 //-----------------------------------------------------------------------------
2609 if(gSystem->AccessPathName(inName,kFileExists)) {
2610 cerr<<"AliTPCtrackerParam::ReadRegParams: "<<inName<<" not found\n";
2612 // Introduced change to "reverse" the TMatrixD read from file.
2613 // Needed because storage mode of TMatrixD changed from column-wise
2614 // to rwo-wise in ROOT.
2616 // A.Dainese 03/06/05
2618 TMatrixD dummyMatrix(9,3);
2620 TFile *inFile = TFile::Open(inName);
2623 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2624 new(&fRegParPi) TMatrixD(*fRegPar);
2625 //printf("before\n");
2626 //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));
2627 dummyMatrix = fRegParPi;
2628 fRegParPi(0,0) = dummyMatrix(0,0);
2629 fRegParPi(0,1) = dummyMatrix(0,1);
2630 fRegParPi(0,2) = dummyMatrix(0,2);
2631 fRegParPi(1,0) = dummyMatrix(3,0);
2632 fRegParPi(1,1) = dummyMatrix(1,1);
2633 fRegParPi(1,2) = dummyMatrix(1,2);
2634 fRegParPi(2,0) = dummyMatrix(6,0);
2635 fRegParPi(2,1) = dummyMatrix(3,2);
2636 fRegParPi(2,2) = dummyMatrix(2,2);
2637 fRegParPi(3,0) = dummyMatrix(1,0);
2638 fRegParPi(3,1) = dummyMatrix(4,0);
2639 fRegParPi(3,2) = dummyMatrix(7,0);
2640 fRegParPi(4,0) = dummyMatrix(3,1);
2641 fRegParPi(4,1) = dummyMatrix(4,1);
2642 fRegParPi(4,2) = dummyMatrix(7,1);
2643 fRegParPi(5,0) = dummyMatrix(6,1);
2644 fRegParPi(5,1) = dummyMatrix(4,2);
2645 fRegParPi(5,2) = dummyMatrix(7,2);
2646 fRegParPi(6,0) = dummyMatrix(2,0);
2647 fRegParPi(6,1) = dummyMatrix(5,0);
2648 fRegParPi(6,2) = dummyMatrix(8,0);
2649 fRegParPi(7,0) = dummyMatrix(2,1);
2650 fRegParPi(7,1) = dummyMatrix(5,1);
2651 fRegParPi(7,2) = dummyMatrix(8,1);
2652 fRegParPi(8,0) = dummyMatrix(6,2);
2653 fRegParPi(8,1) = dummyMatrix(5,2);
2654 fRegParPi(8,2) = dummyMatrix(8,2);
2655 //printf("after\n");
2656 //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));
2659 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Kaons/RegKaons");
2660 new(&fRegParKa) TMatrixD(*fRegPar);
2661 dummyMatrix = fRegParKa;
2662 fRegParKa(0,0) = dummyMatrix(0,0);
2663 fRegParKa(0,1) = dummyMatrix(0,1);
2664 fRegParKa(0,2) = dummyMatrix(0,2);
2665 fRegParKa(1,0) = dummyMatrix(3,0);
2666 fRegParKa(1,1) = dummyMatrix(1,1);
2667 fRegParKa(1,2) = dummyMatrix(1,2);
2668 fRegParKa(2,0) = dummyMatrix(6,0);
2669 fRegParKa(2,1) = dummyMatrix(3,2);
2670 fRegParKa(2,2) = dummyMatrix(2,2);
2671 fRegParKa(3,0) = dummyMatrix(1,0);
2672 fRegParKa(3,1) = dummyMatrix(4,0);
2673 fRegParKa(3,2) = dummyMatrix(7,0);
2674 fRegParKa(4,0) = dummyMatrix(3,1);
2675 fRegParKa(4,1) = dummyMatrix(4,1);
2676 fRegParKa(4,2) = dummyMatrix(7,1);
2677 fRegParKa(5,0) = dummyMatrix(6,1);
2678 fRegParKa(5,1) = dummyMatrix(4,2);
2679 fRegParKa(5,2) = dummyMatrix(7,2);
2680 fRegParKa(6,0) = dummyMatrix(2,0);
2681 fRegParKa(6,1) = dummyMatrix(5,0);
2682 fRegParKa(6,2) = dummyMatrix(8,0);
2683 fRegParKa(7,0) = dummyMatrix(2,1);
2684 fRegParKa(7,1) = dummyMatrix(5,1);
2685 fRegParKa(7,2) = dummyMatrix(8,1);
2686 fRegParKa(8,0) = dummyMatrix(6,2);
2687 fRegParKa(8,1) = dummyMatrix(5,2);
2688 fRegParKa(8,2) = dummyMatrix(8,2);
2692 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2694 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Protons/RegProtons");
2696 new(&fRegParPr) TMatrixD(*fRegPar);
2697 dummyMatrix = fRegParPr;
2698 fRegParPr(0,0) = dummyMatrix(0,0);
2699 fRegParPr(0,1) = dummyMatrix(0,1);
2700 fRegParPr(0,2) = dummyMatrix(0,2);
2701 fRegParPr(1,0) = dummyMatrix(3,0);
2702 fRegParPr(1,1) = dummyMatrix(1,1);
2703 fRegParPr(1,2) = dummyMatrix(1,2);
2704 fRegParPr(2,0) = dummyMatrix(6,0);
2705 fRegParPr(2,1) = dummyMatrix(3,2);
2706 fRegParPr(2,2) = dummyMatrix(2,2);
2707 fRegParPr(3,0) = dummyMatrix(1,0);
2708 fRegParPr(3,1) = dummyMatrix(4,0);
2709 fRegParPr(3,2) = dummyMatrix(7,0);
2710 fRegParPr(4,0) = dummyMatrix(3,1);
2711 fRegParPr(4,1) = dummyMatrix(4,1);
2712 fRegParPr(4,2) = dummyMatrix(7,1);
2713 fRegParPr(5,0) = dummyMatrix(6,1);
2714 fRegParPr(5,1) = dummyMatrix(4,2);
2715 fRegParPr(5,2) = dummyMatrix(7,2);
2716 fRegParPr(6,0) = dummyMatrix(2,0);
2717 fRegParPr(6,1) = dummyMatrix(5,0);
2718 fRegParPr(6,2) = dummyMatrix(8,0);
2719 fRegParPr(7,0) = dummyMatrix(2,1);
2720 fRegParPr(7,1) = dummyMatrix(5,1);
2721 fRegParPr(7,2) = dummyMatrix(8,1);
2722 fRegParPr(8,0) = dummyMatrix(6,2);
2723 fRegParPr(8,1) = dummyMatrix(5,2);
2724 fRegParPr(8,2) = dummyMatrix(8,2);
2727 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Electrons/RegElectrons");
2728 new(&fRegParEl) TMatrixD(*fRegPar);
2729 dummyMatrix = fRegParEl;
2730 fRegParEl(0,0) = dummyMatrix(0,0);
2731 fRegParEl(0,1) = dummyMatrix(0,1);
2732 fRegParEl(0,2) = dummyMatrix(0,2);
2733 fRegParEl(1,0) = dummyMatrix(3,0);
2734 fRegParEl(1,1) = dummyMatrix(1,1);
2735 fRegParEl(1,2) = dummyMatrix(1,2);
2736 fRegParEl(2,0) = dummyMatrix(6,0);
2737 fRegParEl(2,1) = dummyMatrix(3,2);
2738 fRegParEl(2,2) = dummyMatrix(2,2);
2739 fRegParEl(3,0) = dummyMatrix(1,0);
2740 fRegParEl(3,1) = dummyMatrix(4,0);
2741 fRegParEl(3,2) = dummyMatrix(7,0);
2742 fRegParEl(4,0) = dummyMatrix(3,1);
2743 fRegParEl(4,1) = dummyMatrix(4,1);
2744 fRegParEl(4,2) = dummyMatrix(7,1);
2745 fRegParEl(5,0) = dummyMatrix(6,1);
2746 fRegParEl(5,1) = dummyMatrix(4,2);
2747 fRegParEl(5,2) = dummyMatrix(7,2);
2748 fRegParEl(6,0) = dummyMatrix(2,0);
2749 fRegParEl(6,1) = dummyMatrix(5,0);
2750 fRegParEl(6,2) = dummyMatrix(8,0);
2751 fRegParEl(7,0) = dummyMatrix(2,1);
2752 fRegParEl(7,1) = dummyMatrix(5,1);
2753 fRegParEl(7,2) = dummyMatrix(8,1);
2754 fRegParEl(8,0) = dummyMatrix(6,2);
2755 fRegParEl(8,1) = dummyMatrix(5,2);
2756 fRegParEl(8,2) = dummyMatrix(8,2);
2760 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Pions/RegPions");
2762 fRegPar = (TMatrixD*)inFile->Get("/RegParams/Muons/RegMuons");
2764 new(&fRegParMu) TMatrixD(*fRegPar);
2765 dummyMatrix = fRegParMu;
2766 fRegParMu(0,0) = dummyMatrix(0,0);
2767 fRegParMu(0,1) = dummyMatrix(0,1);
2768 fRegParMu(0,2) = dummyMatrix(0,2);
2769 fRegParMu(1,0) = dummyMatrix(3,0);
2770 fRegParMu(1,1) = dummyMatrix(1,1);
2771 fRegParMu(1,2) = dummyMatrix(1,2);
2772 fRegParMu(2,0) = dummyMatrix(6,0);
2773 fRegParMu(2,1) = dummyMatrix(3,2);
2774 fRegParMu(2,2) = dummyMatrix(2,2);
2775 fRegParMu(3,0) = dummyMatrix(1,0);
2776 fRegParMu(3,1) = dummyMatrix(4,0);
2777 fRegParMu(3,2) = dummyMatrix(7,0);
2778 fRegParMu(4,0) = dummyMatrix(3,1);
2779 fRegParMu(4,1) = dummyMatrix(4,1);
2780 fRegParMu(4,2) = dummyMatrix(7,1);
2781 fRegParMu(5,0) = dummyMatrix(6,1);
2782 fRegParMu(5,1) = dummyMatrix(4,2);
2783 fRegParMu(5,2) = dummyMatrix(7,2);
2784 fRegParMu(6,0) = dummyMatrix(2,0);
2785 fRegParMu(6,1) = dummyMatrix(5,0);
2786 fRegParMu(6,2) = dummyMatrix(8,0);
2787 fRegParMu(7,0) = dummyMatrix(2,1);
2788 fRegParMu(7,1) = dummyMatrix(5,1);
2789 fRegParMu(7,2) = dummyMatrix(8,1);
2790 fRegParMu(8,0) = dummyMatrix(6,2);
2791 fRegParMu(8,1) = dummyMatrix(5,2);
2792 fRegParMu(8,2) = dummyMatrix(8,2);
2799 //-----------------------------------------------------------------------------
2800 void AliTPCtrackerParam::RegularizeCovMatrix(const Char_t *outName,Int_t pdg) {
2801 //-----------------------------------------------------------------------------
2802 // This function regularizes the elements of the covariance matrix
2803 // that show a momentum depence:
2804 // c00, c11, c22, c33, c44, c20, c24, c40, c31
2805 // The regularization is done separately for pions, kaons, electrons:
2806 // give "Pion","Kaon" or "Electron" as first argument.
2807 //-----------------------------------------------------------------------------
2809 gStyle->SetOptStat(0);
2810 gStyle->SetOptFit(10001);
2813 const char *part="Pions - ";
2815 InitializeKineGrid("DB");
2817 const Int_t kfitbins = fDBgrid->GetBinsPt();
2818 cerr<<" Fit bins: "<<kfitbins<<endl;
2824 cerr<<" Processing pions ...\n";
2829 cerr<<" Processing kaons ...\n";
2831 case 2212: //protons
2834 cerr<<" Processing protons ...\n";
2836 case 11: // electrons
2838 part="Electrons - ";
2839 cerr<<" Processing electrons ...\n";
2844 cerr<<" Processing muons ...\n";
2850 // create a chain with compared tracks
2851 TChain *cmptrkchain = new ("cmptrktree");
2852 cmptrkchain.Add("CovMatrix_AllEvts.root");
2853 //cmptrkchain.Add("CovMatrix_AllEvts_1.root");
2854 //cmptrkchain.Add("CovMatrix_AllEvts_2.root");
2855 //cmptrkchain.Add("CovMatrix_AllEvts_3.root");
2859 TFile *infile = TFile::Open("CovMatrix_AllEvts.root");
2860 TTree *cmptrktree = (TTree*)infile->Get("cmptrktree");
2863 cmptrktree->SetBranchAddress("comptracks",&cmptrk);
2864 Int_t entries = (Int_t)cmptrktree->GetEntries();
2868 Int_t *n = new Int_t[kfitbins];
2869 Int_t *n00 = new Int_t[kfitbins];
2870 Int_t *n11 = new Int_t[kfitbins];
2871 Int_t *n20 = new Int_t[kfitbins];
2872 Int_t *n22 = new Int_t[kfitbins];
2873 Int_t *n31 = new Int_t[kfitbins];
2874 Int_t *n33 = new Int_t[kfitbins];
2875 Int_t *n40 = new Int_t[kfitbins];
2876 Int_t *n42 = new Int_t[kfitbins];
2877 Int_t *n44 = new Int_t[kfitbins];
2878 Double_t *p = new Double_t[kfitbins];
2879 Double_t *ep = new Double_t[kfitbins];
2880 Double_t *mean00 = new Double_t[kfitbins];
2881 Double_t *mean11 = new Double_t[kfitbins];
2882 Double_t *mean20 = new Double_t[kfitbins];
2883 Double_t *mean22 = new Double_t[kfitbins];
2884 Double_t *mean31 = new Double_t[kfitbins];
2885 Double_t *mean33 = new Double_t[kfitbins];
2886 Double_t *mean40 = new Double_t[kfitbins];
2887 Double_t *mean42 = new Double_t[kfitbins];
2888 Double_t *mean44 = new Double_t[kfitbins];
2889 Double_t *sigma00 = new Double_t[kfitbins];
2890 Double_t *sigma11 = new Double_t[kfitbins];
2891 Double_t *sigma20 = new Double_t[kfitbins];
2892 Double_t *sigma22 = new Double_t[kfitbins];
2893 Double_t *sigma31 = new Double_t[kfitbins];
2894 Double_t *sigma33 = new Double_t[kfitbins];
2895 Double_t *sigma40 = new Double_t[kfitbins];
2896 Double_t *sigma42 = new Double_t[kfitbins];
2897 Double_t *sigma44 = new Double_t[kfitbins];
2898 Double_t *rmean = new Double_t[kfitbins];
2899 Double_t *rsigma = new Double_t[kfitbins];
2902 for(Int_t l=0; l<kfitbins; l++) {
2904 n00[l]=n11[l]=n20[l]=n22[l]=n31[l]=n33[l]=n40[l]=n42[l]=n44[l]=1;
2906 mean00[l]=mean11[l]=mean20[l]=mean22[l]=mean31[l]=mean33[l]=mean40[l]=mean42[l]=mean44[l]=0.;
2907 sigma00[l]=sigma11[l]=sigma20[l]=sigma22[l]=sigma31[l]=sigma33[l]=sigma40[l]=sigma42[l]=sigma44[l]=0.;
2910 // loop on chain entries for mean
2911 for(Int_t l=0; l<entries; l++) {
2912 cmptrktree->GetEvent(l);
2913 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2914 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2917 mean00[pbin]+=cmptrk.c00;
2918 mean11[pbin]+=cmptrk.c11;
2919 mean20[pbin]+=cmptrk.c20;
2920 mean22[pbin]+=cmptrk.c22;
2921 mean31[pbin]+=cmptrk.c31;
2922 mean33[pbin]+=cmptrk.c33;
2923 mean40[pbin]+=cmptrk.c40;
2924 mean42[pbin]+=cmptrk.c42;
2925 mean44[pbin]+=cmptrk.c44;
2926 } // loop on chain entries
2928 for(Int_t l=0; l<kfitbins; l++) {
2941 // loop on chain entries for sigma
2942 for(Int_t l=0; l<entries; l++) {
2943 cmptrktree->GetEvent(l);
2944 if(TMath::Abs(cmptrk.pdg)!=thisPdg) continue;
2945 pbin = (Int_t)fDBgrid->GetBin(cmptrk.pt,cmptrk.eta)/fDBgrid->GetBinsEta();
2946 if(TMath::Abs(cmptrk.c00-mean00[pbin])<0.4*mean00[pbin]) { n00[pbin]++;
2947 sigma00[pbin]+=(cmptrk.c00-mean00[pbin])*(cmptrk.c00-mean00[pbin]); }
2948 if(TMath::Abs(cmptrk.c11-mean11[pbin])<0.4*mean11[pbin]) { n11[pbin]++;
2949 sigma11[pbin]+=(cmptrk.c11-mean11[pbin])*(cmptrk.c11-mean11[pbin]); }
2950 if(TMath::Abs(cmptrk.c20-mean20[pbin])<0.4*mean20[pbin]) { n20[pbin]++;
2951 sigma20[pbin]+=(cmptrk.c20-mean20[pbin])*(cmptrk.c20-mean20[pbin]); }
2952 if(TMath::Abs(cmptrk.c22-mean22[pbin])<0.4*mean22[pbin]) { n22[pbin]++;
2953 sigma22[pbin]+=(cmptrk.c22-mean22[pbin])*(cmptrk.c22-mean22[pbin]); }
2954 if(TMath::Abs(cmptrk.c31-mean31[pbin])<-0.4*mean31[pbin]) { n31[pbin]++;
2955 sigma31[pbin]+=(cmptrk.c31-mean31[pbin])*(cmptrk.c31-mean31[pbin]); }
2956 if(TMath::Abs(cmptrk.c33-mean33[pbin])<0.4*mean33[pbin]) { n33[pbin]++;
2957 sigma33[pbin]+=(cmptrk.c33-mean33[pbin])*(cmptrk.c33-mean33[pbin]); }
2958 if(TMath::Abs(cmptrk.c40-mean40[pbin])<0.4*mean40[pbin]) { n40[pbin]++;
2959 sigma40[pbin]+=(cmptrk.c40-mean40[pbin])*(cmptrk.c40-mean40[pbin]); }
2960 if(TMath::Abs(cmptrk.c42-mean42[pbin])<0.4*mean42[pbin]) { n42[pbin]++;
2961 sigma42[pbin]+=(cmptrk.c42-mean42[pbin])*(cmptrk.c42-mean42[pbin]); }
2962 if(TMath::Abs(cmptrk.c44-mean44[pbin])<0.4*mean44[pbin]) { n44[pbin]++;
2963 sigma44[pbin]+=(cmptrk.c44-mean44[pbin])*(cmptrk.c44-mean44[pbin]); }
2964 } // loop on chain entries
2966 for(Int_t l=0; l<kfitbins; l++) {
2967 sigma00[l] = TMath::Sqrt(sigma00[l]/n00[l]);
2968 sigma11[l] = TMath::Sqrt(sigma11[l]/n11[l]);
2969 sigma20[l] = TMath::Sqrt(sigma20[l]/n20[l]);
2970 sigma22[l] = TMath::Sqrt(sigma22[l]/n22[l]);
2971 sigma31[l] = TMath::Sqrt(sigma31[l]/n31[l]);
2972 sigma33[l] = TMath::Sqrt(sigma33[l]/n33[l]);
2973 sigma40[l] = TMath::Sqrt(sigma40[l]/n40[l]);
2974 sigma42[l] = TMath::Sqrt(sigma42[l]/n42[l]);
2975 sigma44[l] = TMath::Sqrt(sigma44[l]/n44[l]);
2980 TF1 *func = new TF1("RegFunc",RegFunc,0.23,50.,3);
2981 func->SetParNames("A_meas","A_scatt","B");
2983 // line to draw on the plots
2984 TLine *lin = new TLine(-1,1,1.69,1);
2985 lin->SetLineStyle(2);
2986 lin->SetLineWidth(2);
2988 // matrix used to store fit results
2989 TMatrixD fitRes(9,3);
2993 // create the canvas
2994 TCanvas *canv00 = new TCanvas("canv00","c00",0,0,700,900);
2995 canv00->Divide(1,2);
2996 // create the graph for cov matrix
2997 TGraphErrors *gr00 = new TGraphErrors(kfitbins,p,mean00,ep,sigma00);
2998 TString title00("C(y,y)"); title00.Prepend(part);
2999 TH2F *frame00 = new TH2F("frame00",title00.Data(),2,0.1,50,2,0,5e-3);
3000 frame00->SetXTitle("p [GeV/c]");
3001 canv00->cd(1); gPad->SetLogx();
3004 // Sets initial values for parameters
3005 func->SetParameters(1.6e-3,1.9e-4,1.5);
3006 // Fit points in range defined by function
3007 gr00->Fit("RegFunc","R,Q");
3008 func->GetParameters(fitpar);
3009 for(Int_t i=0; i<3; i++) fitRes(0,i)=fitpar[i];
3010 for(Int_t l=0; l<kfitbins; l++) {
3011 rmean[l] = mean00[l]/RegFunc(&p[l],fitpar);
3012 rsigma[l] = sigma00[l]/RegFunc(&p[l],fitpar);
3014 // create the graph the regularized cov. matrix
3015 TGraphErrors *gr00reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3016 TString regtitle00("C(y,y)/(A_meas+A_scatt/p^{B})");
3017 regtitle00.Prepend(part);
3018 TH2F *frame00reg = new TH2F("frame00reg",regtitle00.Data(),2,0.1,50,2,0,2);
3019 frame00reg->SetXTitle("p [GeV/c]");
3020 canv00->cd(2); gPad->SetLogx();
3028 // create the canvas
3029 TCanvas *canv11 = new TCanvas("canv11","c11",0,0,700,900);
3030 canv11->Divide(1,2);
3031 // create the graph for cov matrix
3032 TGraphErrors *gr11 = new TGraphErrors(kfitbins,p,mean11,ep,sigma11);
3033 TString title11("C(z,z)"); title11.Prepend(part);
3034 TH2F *frame11 = new TH2F("frame11",title11.Data(),2,0.1,50,2,0,6e-3);
3035 frame11->SetXTitle("p [GeV/c]");
3036 canv11->cd(1); gPad->SetLogx();
3039 // Sets initial values for parameters
3040 func->SetParameters(1.2e-3,8.1e-4,1.);
3041 // Fit points in range defined by function
3042 gr11->Fit("RegFunc","R,Q");
3043 func->GetParameters(fitpar);
3044 for(Int_t i=0; i<3; i++) fitRes(1,i)=fitpar[i];
3045 for(Int_t l=0; l<kfitbins; l++) {
3046 rmean[l] = mean11[l]/RegFunc(&p[l],fitpar);
3047 rsigma[l] = sigma11[l]/RegFunc(&p[l],fitpar);
3049 // create the graph the regularized cov. matrix
3050 TGraphErrors *gr11reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3051 TString regtitle11("C(z,z)/(A_meas+A_scatt/p^{B})");
3052 regtitle11.Prepend(part);
3053 TH2F *frame11reg = new TH2F("frame11reg",regtitle11.Data(),2,0.1,50,2,0,2);
3054 frame11reg->SetXTitle("p [GeV/c]");
3055 canv11->cd(2); gPad->SetLogx();
3063 // create the canvas
3064 TCanvas *canv20 = new TCanvas("canv20","c20",0,0,700,900);
3065 canv20->Divide(1,2);
3066 // create the graph for cov matrix
3067 TGraphErrors *gr20 = new TGraphErrors(kfitbins,p,mean20,ep,sigma20);
3068 TString title20("C(#eta, y)"); title20.Prepend(part);
3069 TH2F *frame20 = new TH2F("frame20",title20.Data(),2,0.1,50,2,0,2.5e-4);
3070 frame20->SetXTitle("p [GeV/c]");
3071 canv20->cd(1); gPad->SetLogx();
3074 // Sets initial values for parameters
3075 func->SetParameters(7.3e-5,1.2e-5,1.5);
3076 // Fit points in range defined by function
3077 gr20->Fit("RegFunc","R,Q");
3078 func->GetParameters(fitpar);
3079 for(Int_t i=0; i<3; i++) fitRes(2,i)=fitpar[i];
3080 for(Int_t l=0; l<kfitbins; l++) {
3081 rmean[l] = mean20[l]/RegFunc(&p[l],fitpar);
3082 rsigma[l] = sigma20[l]/RegFunc(&p[l],fitpar);
3084 // create the graph the regularized cov. matrix
3085 TGraphErrors *gr20reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3086 TString regtitle20("C(#eta, y)/(A_meas+A_scatt/p^{B})");
3087 regtitle20.Prepend(part);
3088 TH2F *frame20reg = new TH2F("frame20reg",regtitle20.Data(),2,0.1,50,2,0,2);
3089 frame20reg->SetXTitle("p [GeV/c]");
3090 canv20->cd(2); gPad->SetLogx();
3098 // create the canvas
3099 TCanvas *canv22 = new TCanvas("canv22","c22",0,0,700,900);
3100 canv22->Divide(1,2);
3101 // create the graph for cov matrix
3102 TGraphErrors *gr22 = new TGraphErrors(kfitbins,p,mean22,ep,sigma22);
3103 TString title22("C(#eta, #eta)"); title22.Prepend(part);
3104 TH2F *frame22 = new TH2F("frame22",title22.Data(),2,0.1,50,2,0,3e-5);
3105 frame22->SetXTitle("p [GeV/c]");
3106 canv22->cd(1); gPad->SetLogx();
3109 // Sets initial values for parameters
3110 func->SetParameters(5.2e-6,1.1e-6,2.);
3111 // Fit points in range defined by function
3112 gr22->Fit("RegFunc","R,Q");
3113 func->GetParameters(fitpar);
3114 for(Int_t i=0; i<3; i++) fitRes(3,i)=fitpar[i];
3115 for(Int_t l=0; l<kfitbins; l++) {
3116 rmean[l] = mean22[l]/RegFunc(&p[l],fitpar);
3117 rsigma[l] = sigma22[l]/RegFunc(&p[l],fitpar);
3119 // create the graph the regularized cov. matrix
3120 TGraphErrors *gr22reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3121 TString regtitle22("C(#eta, #eta)/(A_meas+A_scatt/p^{B})");
3122 regtitle22.Prepend(part);
3123 TH2F *frame22reg = new TH2F("frame22reg",regtitle22.Data(),2,0.1,50,2,0,2);
3124 frame22reg->SetXTitle("p [GeV/c]");
3125 canv22->cd(2); gPad->SetLogx();
3133 // create the canvas
3134 TCanvas *canv31 = new TCanvas("canv31","c31",0,0,700,900);
3135 canv31->Divide(1,2);
3136 // create the graph for cov matrix
3137 TGraphErrors *gr31 = new TGraphErrors(kfitbins,p,mean31,ep,sigma31);
3138 TString title31("C(tg #lambda,z)"); title31.Prepend(part);
3139 TH2F *frame31 = new TH2F("frame31",title31.Data(),2,0.1,50,2,-2e-4,0);
3140 frame31->SetXTitle("p [GeV/c]");
3141 canv31->cd(1); gPad->SetLogx();
3144 // Sets initial values for parameters
3145 func->SetParameters(-1.2e-5,-1.2e-5,1.5);
3146 // Fit points in range defined by function
3147 gr31->Fit("RegFunc","R,Q");
3148 func->GetParameters(fitpar);
3149 for(Int_t i=0; i<3; i++) fitRes(4,i)=fitpar[i];
3150 for(Int_t l=0; l<kfitbins; l++) {
3151 rmean[l] = mean31[l]/RegFunc(&p[l],fitpar);
3152 rsigma[l] = -sigma31[l]/RegFunc(&p[l],fitpar);
3154 // create the graph the regularized cov. matrix
3155 TGraphErrors *gr31reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3156 TString regtitle31("C(tg #lambda,z)/(A_meas+A_scatt/p^{B})");
3157 regtitle31.Prepend(part);
3158 TH2F *frame31reg = new TH2F("frame31reg",regtitle31.Data(),2,0.1,50,2,0,2);
3159 frame31reg->SetXTitle("p [GeV/c]");
3160 canv31->cd(2); gPad->SetLogx();
3168 // create the canvas
3169 TCanvas *canv33 = new TCanvas("canv33","c33",0,0,700,900);
3170 canv33->Divide(1,2);
3171 // create the graph for cov matrix
3172 TGraphErrors *gr33 = new TGraphErrors(kfitbins,p,mean33,ep,sigma33);
3173 TString title33("C(tg #lambda,tg #lambda)"); title33.Prepend(part);
3174 TH2F *frame33 = new TH2F("frame33",title33.Data(),2,0.1,50,2,0,1e-5);
3175 frame33->SetXTitle("p [GeV/c]");
3176 canv33->cd(1); gPad->SetLogx();
3179 // Sets initial values for parameters
3180 func->SetParameters(1.3e-7,4.6e-7,1.7);
3181 // Fit points in range defined by function
3182 gr33->Fit("RegFunc","R,Q");
3183 func->GetParameters(fitpar);
3184 for(Int_t i=0; i<3; i++) fitRes(5,i)=fitpar[i];
3185 for(Int_t l=0; l<kfitbins; l++) {
3186 rmean[l] = mean33[l]/RegFunc(&p[l],fitpar);
3187 rsigma[l] = sigma33[l]/RegFunc(&p[l],fitpar);
3189 // create the graph the regularized cov. matrix
3190 TGraphErrors *gr33reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3191 TString regtitle33("C(tg #lambda,tg #lambda)/(A_meas+A_scatt/p^{B})");
3192 regtitle33.Prepend(part);
3193 TH2F *frame33reg = new TH2F("frame33reg",regtitle33.Data(),2,0.1,50,2,0,2);
3194 frame33reg->SetXTitle("p [GeV/c]");
3195 canv33->cd(2); gPad->SetLogx();
3203 // create the canvas
3204 TCanvas *canv40 = new TCanvas("canv40","c40",0,0,700,900);
3205 canv40->Divide(1,2);
3206 // create the graph for cov matrix
3207 TGraphErrors *gr40 = new TGraphErrors(kfitbins,p,mean40,ep,sigma40);
3208 TString title40("C(C,y)"); title40.Prepend(part);
3209 TH2F *frame40 = new TH2F("frame40",title40.Data(),2,0.1,50,2,0,1e-6);
3210 frame40->SetXTitle("p [GeV/c]");
3211 canv40->cd(1); gPad->SetLogx();
3214 // Sets initial values for parameters
3215 func->SetParameters(4.e-7,4.4e-8,1.5);
3216 // Fit points in range defined by function
3217 gr40->Fit("RegFunc","R,Q");
3218 func->GetParameters(fitpar);
3219 for(Int_t i=0; i<3; i++) fitRes(6,i)=fitpar[i];
3220 for(Int_t l=0; l<kfitbins; l++) {
3221 rmean[l] = mean40[l]/RegFunc(&p[l],fitpar);
3222 rsigma[l] = sigma40[l]/RegFunc(&p[l],fitpar);
3224 // create the graph the regularized cov. matrix
3225 TGraphErrors *gr40reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3226 TString regtitle40("C(C,y)/(A_meas+A_scatt/p^{B})");
3227 regtitle40.Prepend(part);
3228 TH2F *frame40reg = new TH2F("frame40reg",regtitle40.Data(),2,0.1,50,2,0,2);
3229 frame40reg->SetXTitle("p [GeV/c]");
3230 canv40->cd(2); gPad->SetLogx();
3238 // create the canvas
3239 TCanvas *canv42 = new TCanvas("canv42","c42",0,0,700,900);
3240 canv42->Divide(1,2);
3241 // create the graph for cov matrix
3242 TGraphErrors *gr42 = new TGraphErrors(kfitbins,p,mean42,ep,sigma42);
3243 TString title42("C(C, #eta)"); title42.Prepend(part);
3244 TH2F *frame42 = new TH2F("frame42",title42.Data(),2,0.1,50,2,0,2.2e-7);
3245 frame42->SetXTitle("p [GeV/c]");
3246 canv42->cd(1); gPad->SetLogx();
3249 // Sets initial values for parameters
3250 func->SetParameters(3.e-8,8.2e-9,2.);
3251 // Fit points in range defined by function
3252 gr42->Fit("RegFunc","R,Q");
3253 func->GetParameters(fitpar);
3254 for(Int_t i=0; i<3; i++) fitRes(7,i)=fitpar[i];
3255 for(Int_t l=0; l<kfitbins; l++) {
3256 rmean[l] = mean42[l]/RegFunc(&p[l],fitpar);
3257 rsigma[l] = sigma42[l]/RegFunc(&p[l],fitpar);
3259 // create the graph the regularized cov. matrix
3260 TGraphErrors *gr42reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3261 TString regtitle42("C(C, #eta)/(A_meas+A_scatt/p^{B})");
3262 regtitle42.Prepend(part);
3263 TH2F *frame42reg = new TH2F("frame42reg",regtitle42.Data(),2,0.1,50,2,0,2);
3264 frame42reg->SetXTitle("p [GeV/c]");
3265 canv42->cd(2); gPad->SetLogx();
3273 // create the canvas
3274 TCanvas *canv44 = new TCanvas("canv44","c44",0,0,700,900);
3275 canv44->Divide(1,2);
3276 // create the graph for cov matrix
3277 TGraphErrors *gr44 = new TGraphErrors(kfitbins,p,mean44,ep,sigma44);
3278 TString title44("C(C,C)"); title44.Prepend(part);
3279 TH2F *frame44 = new TH2F("frame44",title44.Data(),2,0.1,50,2,0,2e-9);
3280 frame44->SetXTitle("p [GeV/c]");
3281 canv44->cd(1); gPad->SetLogx();
3284 // Sets initial values for parameters
3285 func->SetParameters(1.8e-10,5.8e-11,2.);
3286 // Fit points in range defined by function
3287 gr44->Fit("RegFunc","R,Q");
3288 func->GetParameters(fitpar);
3289 for(Int_t i=0; i<3; i++) fitRes(8,i)=fitpar[i];
3290 for(Int_t l=0; l<kfitbins; l++) {
3291 rmean[l] = mean44[l]/RegFunc(&p[l],fitpar);
3292 rsigma[l] = sigma44[l]/RegFunc(&p[l],fitpar);
3294 // create the graph the regularized cov. matrix
3295 TGraphErrors *gr44reg = new TGraphErrors(kfitbins,p,rmean,ep,rsigma);
3296 TString regtitle44("C(C,C)/(A_meas+A_scatt/p^{B})");
3297 regtitle44.Prepend(part);
3298 TH2F *frame44reg = new TH2F("frame44reg",regtitle44.Data(),2,0.1,50,2,0,2);
3299 frame44reg->SetXTitle("p [GeV/c]");
3300 canv44->cd(2); gPad->SetLogx();
3310 new(&fRegParPi) TMatrixD(fitRes);
3313 new(&fRegParKa) TMatrixD(fitRes);
3316 new(&fRegParPr) TMatrixD(fitRes);
3319 new(&fRegParEl) TMatrixD(fitRes);
3322 new(&fRegParMu) TMatrixD(fitRes);
3326 // write fit parameters to file
3327 WriteRegParams(outName,pdg);
3364 //-----------------------------------------------------------------------------
3365 Bool_t AliTPCtrackerParam::SelectedTrack(Double_t pt,Double_t eta) const {
3366 //-----------------------------------------------------------------------------
3367 // This function makes a selection according to TPC tracking efficiency
3368 //-----------------------------------------------------------------------------
3372 eff = fEff->GetValueAt(pt,eta);
3374 if(gRandom->Rndm() < eff) return kTRUE;
3378 //-----------------------------------------------------------------------------
3379 void AliTPCtrackerParam::SetParticle(Int_t pdg) {
3380 //-----------------------------------------------------------------------------
3381 // This function set efficiencies, pulls, etc... for the particle
3382 // specie of the current particle
3383 //-----------------------------------------------------------------------------
3387 fDBgrid = &fDBgridPi;
3390 fRegPar = &fRegParPi;
3391 fdEdxMean = &fdEdxMeanPi;
3392 fdEdxRMS = &fdEdxRMSPi;
3395 fDBgrid = &fDBgridKa;
3398 fRegPar = &fRegParKa;
3399 fdEdxMean = &fdEdxMeanKa;
3400 fdEdxRMS = &fdEdxRMSKa;
3403 fDBgrid = &fDBgridPr;
3406 fRegPar = &fRegParPr;
3407 fdEdxMean = &fdEdxMeanPr;
3408 fdEdxRMS = &fdEdxRMSPr;
3411 fDBgrid = &fDBgridEl;
3414 fRegPar = &fRegParEl;
3415 fdEdxMean = &fdEdxMeanEl;
3416 fdEdxRMS = &fdEdxRMSEl;
3419 fDBgrid = &fDBgridMu;
3422 fRegPar = &fRegParMu;
3423 fdEdxMean = &fdEdxMeanMu;
3424 fdEdxRMS = &fdEdxRMSMu;
3430 //-----------------------------------------------------------------------------
3431 void AliTPCtrackerParam::SmearTrack(Double_t *xx,Double_t *xxsm,TMatrixD cov)
3433 //-----------------------------------------------------------------------------
3434 // This function smears track parameters according to streched cov. matrix
3435 //-----------------------------------------------------------------------------
3436 Double_t xref=xxsm[0]; xxsm[0]=0;
3438 AliGausCorr *corgen = new AliGausCorr(cov,5);
3440 corgen->GetGaussN(corr);
3441 // check on fP2(ESD) = fX*fP4-fP2(TPC)
3442 // with fX=xref (not smeared), fP4=xx[4]+corr[4] e fP2=xx[2]+corr[2];
3443 // if fP2(ESD)^2 > 1 -> resmear...
3444 Double_t fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3445 while ( (fp2esd*fp2esd) > 1.0 ) {
3446 Warning("SmearTrack()","Badly smeared track, retrying...");
3447 corgen->GetGaussN(corr);
3448 fp2esd=xref*(xx[4]+corr[4])-(xx[2]+corr[2]);
3454 for(Int_t l=0;l<5;l++) xxsm[l] = xx[l]+corr[l];
3458 //-----------------------------------------------------------------------------
3459 Int_t AliTPCtrackerParam::WritedEdx(const Char_t *outName,Int_t pdg) {
3460 //-----------------------------------------------------------------------------
3461 // This function writes the dEdx parameters to the DB
3462 //-----------------------------------------------------------------------------
3465 const char *dirName="Pions";
3466 const char *meanName="dEdxMeanPi";
3467 const char *rmsName="dEdxRMSPi";
3471 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3472 } else { opt="update"; }
3477 meanName="dEdxMeanPi";
3478 rmsName="dEdxRMSPi";
3482 meanName="dEdxMeanKa";
3483 rmsName="dEdxRMSKa";
3487 meanName="dEdxMeanPr";
3488 rmsName="dEdxRMSPr";
3491 dirName="Electrons";
3492 meanName="dEdxMeanEl";
3493 rmsName="dEdxRMSEl";
3497 meanName="dEdxMeanMu";
3498 rmsName="dEdxRMSMu";
3502 TFile *outFile = new TFile(outName,opt);
3503 if(!gDirectory->cd("/dEdx")) {
3504 outFile->mkdir("dEdx");
3505 gDirectory->cd("/dEdx");
3507 TDirectory *dir2 = gDirectory->mkdir(dirName);
3509 fdEdxMean->SetName(meanName); fdEdxMean->Write();
3510 fdEdxRMS->SetName(rmsName); fdEdxRMS->Write();
3518 //-----------------------------------------------------------------------------
3519 Int_t AliTPCtrackerParam::WriteEffs(const Char_t *outName) {
3520 //-----------------------------------------------------------------------------
3521 // This function writes the TPC efficiencies to the DB
3522 //-----------------------------------------------------------------------------
3527 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3528 } else { opt="update"; }
3530 TFile *outFile = new TFile(outName,opt);
3532 outFile->mkdir("Efficiencies");
3533 gDirectory->cd("/Efficiencies");
3534 gDirectory->mkdir("Pions");
3535 gDirectory->mkdir("Kaons");
3536 gDirectory->mkdir("Protons");
3537 gDirectory->mkdir("Electrons");
3538 gDirectory->mkdir("Muons");
3540 gDirectory->cd("/Efficiencies/Pions");
3541 fEffPi.SetName("EffPi");
3543 gDirectory->cd("/Efficiencies/Kaons");
3544 fEffKa.SetName("EffKa");
3546 gDirectory->cd("/Efficiencies/Protons");
3547 fEffPr.SetName("EffPr");
3549 gDirectory->cd("/Efficiencies/Electrons");
3550 fEffEl.SetName("EffEl");
3552 gDirectory->cd("/Efficiencies/Muons");
3553 fEffMu.SetName("EffMu");
3562 //-----------------------------------------------------------------------------
3563 Int_t AliTPCtrackerParam::WritePulls(const Char_t *outName) {
3564 //-----------------------------------------------------------------------------
3565 // This function writes the pulls to the DB
3566 //-----------------------------------------------------------------------------
3570 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3571 } else { opt="update"; }
3573 TFile *outFile = new TFile(outName,opt);
3575 outFile->mkdir("Pulls");
3576 gDirectory->cd("/Pulls");
3577 gDirectory->mkdir("Pions");
3578 gDirectory->mkdir("Kaons");
3579 gDirectory->mkdir("Protons");
3580 gDirectory->mkdir("Electrons");
3581 gDirectory->mkdir("Muons");
3583 for(Int_t i=0;i<5;i++) {
3584 TString pi("PullsPi_"); pi+=i;
3585 TString ka("PullsKa_"); ka+=i;
3586 TString pr("PullsPr_"); pr+=i;
3587 TString el("PullsEl_"); el+=i;
3588 TString mu("PullsMu_"); mu+=i;
3589 fPullsPi[i].SetName(pi.Data());
3590 fPullsKa[i].SetName(ka.Data());
3591 fPullsPr[i].SetName(pr.Data());
3592 fPullsEl[i].SetName(el.Data());
3593 fPullsMu[i].SetName(mu.Data());
3594 gDirectory->cd("/Pulls/Pions");
3595 fPullsPi[i].Write();
3596 gDirectory->cd("/Pulls/Kaons");
3597 fPullsKa[i].Write();
3598 gDirectory->cd("/Pulls/Protons");
3599 fPullsPr[i].Write();
3600 gDirectory->cd("/Pulls/Electrons");
3601 fPullsEl[i].Write();
3602 gDirectory->cd("/Pulls/Muons");
3603 fPullsMu[i].Write();
3610 //-----------------------------------------------------------------------------
3611 Int_t AliTPCtrackerParam::WriteRegParams(const Char_t *outName,Int_t pdg) {
3612 //-----------------------------------------------------------------------------
3613 // This function writes the regularization parameters to the DB
3614 //-----------------------------------------------------------------------------
3617 const char *dirName="Pions";
3618 const char *keyName="RegPions";
3622 if(gSystem->AccessPathName(outName,kFileExists)) { opt="recreate";
3623 } else { opt="update"; }
3636 keyName="RegProtons";
3639 dirName="Electrons";
3640 keyName="RegElectrons";
3648 TFile *outFile = new TFile(outName,opt);
3649 if(!gDirectory->cd("/RegParams")) {
3650 outFile->mkdir("RegParams");
3651 gDirectory->cd("/RegParams");
3653 TDirectory *dir2 = gDirectory->mkdir(dirName);
3655 fRegPar->Write(keyName);
3663 //-----------------------------------------------------------------------------
3664 //*****************************************************************************
3665 //-----------------------------------------------------------------------------