3 void ITSHitsToDigits (Int_t evNumber1=0,Int_t evNumber2=0,Int_t nsignal =25, Int_t size=-1)
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");
20 // Connect the Root Galice file containing Geometry, Kine and Hits
22 TFile *file = (TFile*)gROOT->GetListOfFiles()->FindObject("galice.root");
23 printf("file %p\n",file);
24 if (file) file->Close();
25 if (!file) file = new TFile("galice.root","UPDATE");
28 printf ("I'm after Map \n");
30 // Get AliRun object from file or create it if not on file
33 gAlice = (AliRun*)file->Get("gAlice");
34 if (gAlice) printf("AliRun object found on file\n");
35 if (!gAlice) gAlice = new AliRun("gAlice","Alice test program");
37 printf ("I'm after gAlice \n");
39 AliITS *ITS = (AliITS*) gAlice->GetModule("ITS");
43 // Set the simulation models
45 AliITSgeom *geom = ITS->GetITSgeom();
48 // SDD compression param: 2 fDecrease, 2fTmin, 2fTmax or disable, 2 fTolerance
50 Int_t cp[8]={0,0,0,0,0,0,0,0};
52 AliITSDetType *iDetType=ITS->DetType(1);
53 AliITSresponseSDD *res1 = (AliITSresponseSDD*)iDetType->GetResponseModel();
55 res1=new AliITSresponseSDD();
56 ITS->SetResponseModel(1,res1);
58 res1->SetZeroSupp("2D");
59 //res1->SetZeroSupp("1D");
60 res1->SetNoiseParam(0.,0.);
61 res1->SetCompressParam(cp);
64 AliITSsegmentationSDD *seg1=(AliITSsegmentationSDD*)iDetType->GetSegmentationModel();
66 seg1 = new AliITSsegmentationSDD(geom,res1);
67 ITS->SetSegmentationModel(1,seg1);
70 AliITSsimulationSDD *sim1=new AliITSsimulationSDD(seg1,res1);
71 ITS->SetSimulationModel(1,sim1);
77 AliITSDetType *iDetType=ITS->DetType(0);
78 AliITSsegmentationSPD *seg0=(AliITSsegmentationSPD*)iDetType->GetSegmentationModel();
79 AliITSresponseSPD *res0 = (AliITSresponseSPD*)iDetType->GetResponseModel();
80 AliITSsimulationSPD *sim0=new AliITSsimulationSPD(seg0,res0);
81 ITS->SetSimulationModel(0,sim0);
83 printf("SPD dimensions %f %f \n",seg0->Dx(),seg0->Dz());
84 printf("SPD npixels %d %d \n",seg0->Npz(),seg0->Npx());
85 printf("SPD pitches %d %d \n",seg0->Dpz(0),seg0->Dpx(0));
91 AliITSDetType *iDetType=ITS->DetType(2);
92 AliITSsegmentationSSD *seg2=(AliITSsegmentationSSD*)iDetType->GetSegmentationModel();
93 AliITSresponseSSD *res2 = (AliITSresponseSSD*)iDetType->GetResponseModel();
94 res2->SetSigmaSpread(3.,2.);
95 AliITSsimulationSSD *sim2=new AliITSsimulationSSD(seg2,res2);
96 ITS->SetSimulationModel(2,sim2);
105 for (Int_t nev=evNumber1; nev<= evNumber2; nev++) {
106 cout << "nev " <<nev<<endl;
107 Int_t nparticles = gAlice->GetEvent(nev);
108 cout << "nparticles " <<nparticles<<endl;
109 if (nev < evNumber1) continue;
110 if (nparticles <= 0) return;
112 Int_t nbgr_ev=Int_t(nev/nsignal);
113 //printf("nbgr_ev %d\n",nbgr_ev);
114 ITS->HitsToDigits(nev,nbgr_ev,size," ","All"," ");
115 //ITS->HitsToDigits(nev,nbgr_ev,size," ","SDD"," ");