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1 | #if !defined(__CINT__) || defined(__MAKECINT__) | |
2 | #include "Riostream.h" | |
3 | #include "AliV0vertexer.h" | |
4 | #include "TFile.h" | |
5 | #include "TStopwatch.h" | |
6 | ||
7 | #include "AliRun.h" | |
8 | #include "AliRunLoader.h" | |
9 | #include "AliITSLoader.h" | |
10 | #endif | |
11 | ||
12 | extern AliRun *gAlice; | |
13 | ||
14 | Int_t AliV0FindVertices(Int_t nev=5) { | |
15 | cerr<<"Looking for V0 vertices...\n"; | |
16 | ||
17 | if (gAlice) { | |
18 | delete gAlice->GetRunLoader(); | |
19 | delete gAlice; | |
20 | gAlice=0; | |
21 | } | |
22 | AliRunLoader* rl = AliRunLoader::Open("galice.root"); | |
23 | if (rl == 0x0) { | |
24 | cerr<<"AliV0FindVertices.C : Can not open session RL=NULL"<< endl; | |
25 | return 1; | |
26 | } | |
27 | AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader"); | |
28 | if (itsl == 0x0) { | |
29 | cerr<<"AliV0FindVertices.C : Can not get ITS loader"<<endl; | |
30 | return 2; | |
31 | } | |
32 | itsl->LoadTracks("read"); | |
33 | itsl->LoadV0s("recreate"); | |
34 | ||
35 | Double_t cuts[]={33, // max. allowed chi2 | |
36 | 0.16,// min. allowed negative daughter's impact parameter | |
37 | 0.05,// min. allowed positive daughter's impact parameter | |
38 | 0.080,// max. allowed DCA between the daughter tracks | |
39 | 0.998,// max. allowed cosine of V0's pointing angle | |
40 | 0.9, // min. radius of the fiducial volume | |
41 | 2.9 // max. radius of the fiducial volume | |
42 | }; | |
43 | TStopwatch timer; | |
44 | AliV0vertexer vtxer(cuts); | |
45 | Int_t rc=0; | |
46 | if (nev>rl->GetNumberOfEvents()) nev=rl->GetNumberOfEvents(); | |
47 | for (Int_t i=0; i<nev; i++) { | |
48 | rl->GetEvent(i); | |
49 | //Double_t vtx[3]={0.,0.,0.}; vtxer.SetVertex(vtx); // primary vertex (cm) | |
50 | ||
51 | TTree *tTree=itsl->TreeT(); | |
52 | if (!tTree) { | |
53 | cerr<<"AliV0FindVertices.C : Can't get the ITS track tree !"<<endl; | |
54 | return 3; | |
55 | } | |
56 | TTree *vTree=itsl->TreeV0(); | |
57 | if (!vTree) { | |
58 | itsl->MakeTree("V0"); | |
59 | vTree=itsl->TreeV0(); | |
60 | } | |
61 | ||
62 | rc=vtxer.Tracks2V0vertices(tTree,vTree); | |
63 | ||
64 | itsl->WriteV0s("OVERWRITE"); | |
65 | } | |
66 | timer.Stop(); timer.Print(); | |
67 | ||
68 | delete rl; | |
69 | ||
70 | return rc; | |
71 | } |