+++ /dev/null
-#ifndef __CINT__
- #include <iostream.h>
-
- #include "AliTOF.h"
- #include "AliTOFhit.h"
- #include "AliTPCtrack.h"
- #include "AliTRDtrack.h"
- #include "AliTRDgeometry.h"
-
- #include "alles.h"
- #include "TFile.h"
- #include "TParticle.h"
- #include "TStopwatch.h"
-#endif
-
-void AliTRDtoTOFanalysis()
-{
-
- Int_t nEvent = 0;
- const Int_t maxIndex = 80000; // max number of primaries to be analysed
- Int_t rtIndex[maxIndex];
- for(Int_t i = 0; i < maxIndex; i++) rtIndex[i] = -1;
-
- //****** tracking: Load reconstructed tracks
-
- TFile *tf=TFile::Open("AliTRDtracks.root");
-
- if (!tf->IsOpen()) {cerr<<"Can't open AliTRDtracks.root !\n"; return;}
- TObjArray tarray(2000);
-
- char tname[100];
- sprintf(tname,"seedsTRDtoTOF2_%d",nEvent);
- // for other radial positions use different trees:
- // sprintf(tname,"seedsTRDtoTOF1_%d",nEvent);
- // sprintf(tname,"seedsTRDtoPHOS_%d",nEvent);
- // sprintf(tname,"seedsTRDtoRHIC_%d",nEvent);
-
- TTree *tracktree=(TTree*)tf->Get(tname);
-
- TBranch *tbranch=tracktree->GetBranch("tracks");
-
- Int_t nRecTracks = (Int_t) tracktree->GetEntries();
- cout<<"Found "<<nRecTracks<<" entries in the track tree "<<tname<<endl;
-
- for (Int_t i=0; i<nRecTracks; i++) {
- AliTPCtrack *iotrack=new AliTPCtrack();
- tbranch->SetAddress(&iotrack);
- tracktree->GetEvent(i);
- tarray.AddLast(iotrack);
- Int_t trackLabel = iotrack->GetLabel();
-
- // printf("rt with %d clusters and label %d \n",
- // iotrack->GetNumberOfClusters(), trackLabel);
-
- if(trackLabel < 0) continue;
- if(trackLabel >= maxIndex) continue;
- rtIndex[trackLabel] = i;
- }
- tf->Close();
-
- //********
-
- TH1F *hdx = new TH1F("dx","X(hit) - X(track)",40,-10,10);
- TH1F *hdy = new TH1F("dy","Y(hit) - Y(track)",100,-20,20);
- TH1F *hdz = new TH1F("dz","Z(hit) - Z(track)",100,-20,20);
- TH2F *hdt = new TH2F("dt","T(hit) vs S(track)",100,0,500,500,200,700);
-
-
- // Connect the AliRoot file containing Geometry, Kine, Hits, and Digits
- Char_t *alifile = "galice.root";
-
- TFile *gafl = (TFile*) gROOT->GetListOfFiles()->FindObject(alifile);
- if (!gafl) {
- cout << "Open the ALIROOT-file " << alifile << endl;
- gafl = new TFile(alifile);
- }
- else {
- cout << alifile << " is already open" << endl;
- }
-
- // Get AliRun object from file or create it if not on file
- gAlice = (AliRun*) gafl->Get("gAlice");
- if (gAlice)
- cout << "AliRun object found on file" << endl;
- else
- gAlice = new AliRun("gAlice","Alice test program");
-
-
- // Import the Trees for the event nEvent in the file
- const Int_t nparticles = gAlice->GetEvent(nEvent);
- if (nparticles <= 0) return;
-
- Float_t x,y,z,mass,e;
- Double_t gX, gY, gZ; // rec. track coordinates in the global system
- Double_t Px, Py, Pz; // rec. track momentum components in the global system
- Float_t X, Y, Z; // local tracking coordinates for reconstructed track
- Int_t nbytes = 0;
- Int_t j,hit,ipart;
- Int_t nhits;
- Float_t tof;
- TParticle *particle;
- AliTPCtrack *rt;
-
-// Get pointers to Alice detectors and Hits containers
- AliDetector *TOF = gAlice->GetDetector("TOF");
- Int_t ntracks = (Int_t) gAlice->TreeH()->GetEntries();
-
-// Start loop on tracks in the hits containers
-
- for (Int_t track=0; track < ntracks; track++) {
-
- if(TOF) {
- for(AliTOFhit* tofHit = (AliTOFhit*)TOF->FirstHit(track);
- tofHit;
- tofHit=(AliTOFhit*)TOF->NextHit()) {
-
- ipart = tofHit->GetTrack();
- if(ipart >= maxIndex) continue;
- if(rtIndex[ipart] < 0) continue;
-
- x = tofHit->X();
- y = tofHit->Y();
- z = tofHit->Z();
-
- //******* tracking: extract track coordinates, momentum, etc.
-
- rt = (AliTPCtrack*) tarray.UncheckedAt(rtIndex[ipart]);
- Double_t tr_length = rt->GetLength(); // meaningfull only with ITS
- // part fully implemented
-
- AliTRDtrack *trd_rt = new AliTRDtrack(*rt, rt->GetAlpha());
- trd_rt->GetGlobalXYZ(gX,gY,gZ); // returns running global coordinates
- trd_rt->GetPxPyPz(Px,Py,Pz); // returns momentum in global system
-
- /*
- printf("\n hit position - rec. track position:\n");
- printf(" X: %f - %f = %f \n", x, gX, x - gX);
- printf(" Y: %f - %f = %f \n", y, gY, y - gY);
- printf(" Z: %f - %f = %f \n", z, gZ, z - gZ);
- printf("\n");
- */
-
- delete trd_rt;
-
- // conversion from hit coordinates from global coordinate system
- // to "local" tracking system
-
- Float_t phi =TMath::ATan2(y,x);
- if (phi > 2.*TMath::Pi()) phi -= 2.*TMath::Pi();
- if (phi < 0. ) phi += 2.*TMath::Pi();
- Int_t sec = Int_t(phi/AliTRDgeometry::GetAlpha()) % 18;
- Float_t alpha = (sec + 0.5) * AliTRDgeometry::GetAlpha();
-
- Float_t tmp=x*TMath::Cos(alpha) + y*TMath::Sin(alpha);
- y= - x*TMath::Sin(alpha) + y*TMath::Cos(alpha);
- x=tmp;
-
- // particle = (TParticle*)gAlice->Particle(ipart);
- // if (particle->GetFirstMother() < 0) continue;
-
- X = (Float_t) rt->GetX(); // radial position in the tracking system
- Y = (Float_t) rt->GetY(); // r*phi position within the sector
- Z = (Float_t) rt->GetZ(); // Z position
-
-
- if(TMath::Abs(X-x-1) > 2) continue;
-
- hdx->Fill(X-x);
- hdy->Fill(Y-y);
- hdz->Fill(Z-z);
-
- //**********
-
- }
- }
- }
-
- TCanvas* c1 = new TCanvas("c1", "c1", 210, 210, 910, 940);
- c1->SetFillColor(10);
- c1->Divide(2,2);
- c1->cd(1); hdx->Draw();
- c1->cd(2); hdy->Draw();
- c1->cd(3); hdz->Draw();
- c1->cd(4); hdt->Draw();
-}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff