3 void ITSDigitsToClusters (Int_t evNumber1=0,Int_t evNumber2=0)
5 /////////////////////////////////////////////////////////////////////////
6 // This macro is a small example of a ROOT macro
7 // illustrating how to read the output of GALICE
8 // and do some analysis.
10 /////////////////////////////////////////////////////////////////////////
12 // Dynamically link some shared libs
14 if (gClassTable->GetID("AliRun") < 0) {
15 gROOT->LoadMacro("loadlibs.C");
23 // Connect the Root Galice file containing Geometry, Kine and Hits
25 TFile *file = (TFile*)gROOT->GetListOfFiles()->FindObject("galice.root");
26 printf("file %p\n",file);
27 if (file) file->Close();
28 file = new TFile("galice.root","UPDATE");
31 printf ("I'm after Map \n");
33 // Get AliRun object from file or create it if not on file
36 gAlice = (AliRun*)file->Get("gAlice");
37 if (gAlice) printf("AliRun object found on file\n");
38 if (!gAlice) gAlice = new AliRun("gAlice","Alice test program");
40 printf ("I'm after gAlice \n");
42 AliITS *ITS = (AliITS*) gAlice->GetModule("ITS");
45 AliITSgeom *geom = ITS->GetITSgeom();
48 // Set the models for cluster finding
52 AliITSDetType *iDetType=ITS->DetType(0);
53 AliITSsegmentationSPD *seg0=(AliITSsegmentationSPD*)iDetType->GetSegmentationModel();
54 TClonesArray *dig0 = ITS->DigitsAddress(0);
55 TClonesArray *recp0 = ITS->ClustersAddress(0);
56 AliITSClusterFinderSPD *rec0=new AliITSClusterFinderSPD(seg0,dig0,recp0);
57 ITS->SetReconstructionModel(0,rec0);
59 printf("SPD dimensions %f %f \n",seg0->Dx(),seg0->Dz());
60 printf("SPD npixels %d %d \n",seg0->Npz(),seg0->Npx());
65 AliITSDetType *iDetType=ITS->DetType(1);
66 AliITSgeom *geom = ITS->GetITSgeom();
68 AliITSsegmentationSDD *seg1=(AliITSsegmentationSDD*)iDetType->GetSegmentationModel();
69 if (!seg1) seg1 = new AliITSsegmentationSDD(geom);
70 AliITSresponseSDD *res1 = (AliITSresponseSDD*)iDetType->GetResponseModel();
71 if (!res1) res1=new AliITSresponseSDD();
72 res1->SetNoiseParam(0.,0.);
73 TClonesArray *dig1 = ITS->DigitsAddress(1);
74 TClonesArray *recp1 = ITS->ClustersAddress(1);
75 AliITSClusterFinderSDD *rec1=new AliITSClusterFinderSDD(seg1,res1,dig1,recp1);
76 ITS->SetReconstructionModel(1,rec1);
82 AliITSDetType *iDetType=ITS->DetType(2);
83 AliITSsegmentationSSD *seg2=(AliITSsegmentationSSD*)iDetType->GetSegmentationModel();
84 TClonesArray *dig2 = ITS->DigitsAddress(2);
85 TClonesArray *recp2 = ITS->ClustersAddress(2);
86 AliITSClusterFinderSSD *rec2=new AliITSClusterFinderSSD(seg2,dig2,recp2);
87 ITS->SetReconstructionModel(2,rec2);
89 printf("SSD dimensions %f %f \n",seg2->Dx(),seg2->Dz());
90 printf("SSD nstrips %d %d \n",seg2->Npz(),seg2->Npx());
98 for (int nev=evNumber1; nev<= evNumber2; nev++) {
99 Int_t nparticles = gAlice->GetEvent(nev);
100 cout << "nev " <<nev<<endl;
101 cout << "nparticles " <<nparticles<<endl;
102 if (nev < evNumber1) continue;
103 if (nparticles <= 0) return;
105 TTree *TD = gAlice->TreeD();
106 Int_t nent=TD->GetEntries();
107 printf("Found %d entries in the tree (must be one per module per event!)\n",nent);
108 //Int_t nmodules=geom->GetLastSSD();
109 //Int_t last_entry=nent-(nmodules+1);
111 ITS->DigitsToRecPoints(nev,last_entry,"All");