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1 | AliGenerator* CreateGenerator(); | |
2 | ||
3 | void fastGenPA(Int_t nev = 1, char* filename = "galice.root") | |
4 | { | |
5 | // Runloader | |
6 | AliRunLoader* rl = AliRunLoader::Open("galice.root", "FASTRUN", "recreate"); | |
7 | ||
8 | rl->SetCompressionLevel(2); | |
9 | rl->SetNumberOfEventsPerFile(10000); | |
10 | rl->LoadKinematics("RECREATE"); | |
11 | rl->MakeTree("E"); | |
12 | gAlice->SetRunLoader(rl); | |
13 | ||
14 | ||
15 | // Create stack | |
16 | rl->MakeStack(); | |
17 | AliStack* stack = rl->Stack(); | |
18 | ||
19 | // Header | |
20 | AliHeader* header = rl->GetHeader(); | |
21 | ||
22 | ||
23 | // Create and Initialize Generator | |
24 | AliGenerator *gener = CreateGenerator(); | |
25 | gener->Init(); | |
26 | gener->SetStack(stack); | |
27 | ||
28 | // | |
29 | // Event Loop | |
30 | // | |
31 | Int_t iev; | |
32 | ||
33 | for (iev = 0; iev < nev; iev++) { | |
34 | ||
35 | printf("\n \n Event number %d \n \n", iev); | |
36 | ||
37 | // Initialize event | |
38 | ||
39 | header->Reset(0,iev); | |
40 | rl->SetEventNumber(iev); | |
41 | stack->Reset(); | |
42 | rl->MakeTree("K"); | |
43 | ||
44 | // Generate event | |
45 | ||
46 | gener->Generate(); | |
47 | ||
48 | // Analysis | |
49 | Int_t npart = stack->GetNprimary(); | |
50 | printf("Analyse %d Particles\n", npart); | |
51 | for (Int_t part=0; part<npart; part++) { | |
52 | TParticle *MPart = stack->Particle(part); | |
53 | Int_t mpart = MPart->GetPdgCode(); | |
54 | } | |
55 | ||
56 | // Finish event | |
57 | header->SetNprimary(stack->GetNprimary()); | |
58 | header->SetNtrack(stack->GetNtrack()); | |
59 | // I/O | |
60 | // | |
61 | stack->FinishEvent(); | |
62 | header->SetStack(stack); | |
63 | rl->TreeE()->Fill(); | |
64 | rl->WriteKinematics("OVERWRITE"); | |
65 | } // event loop | |
66 | // | |
67 | // Termination | |
68 | // Generator | |
69 | gener->FinishRun(); | |
70 | ||
71 | // Write file | |
72 | rl->WriteHeader("OVERWRITE"); | |
73 | gener->Write(); | |
74 | rl->Write(); | |
75 | } | |
76 | ||
77 | ||
78 | AliGenerator* CreateGenerator() | |
79 | { | |
80 | AliGenCocktail *gener = new AliGenCocktail(); | |
81 | gener->SetTrackingFlag(0); | |
82 | AliGenHijing *hijing = new AliGenHijing(-1); | |
83 | // centre of mass energy | |
84 | hijing->SetEnergyCMS(TMath::Sqrt(82./208.) * 14000.); | |
85 | // impact parameter range | |
86 | hijing->SetImpactParameterRange(0., 6.); | |
87 | // reference frame | |
88 | hijing->SetReferenceFrame("CMS"); | |
89 | hijing->SetBoostLHC(1); | |
90 | // projectile | |
91 | hijing->SetProjectile("P", 1, 1); | |
92 | hijing->SetTarget ("A", 208, 82); | |
93 | // tell hijing to keep the full parent child chain | |
94 | hijing->KeepFullEvent(); | |
95 | // enable jet quenching | |
96 | hijing->SetJetQuenching(4); | |
97 | // enable shadowing | |
98 | hijing->SetShadowing(1); | |
99 | // Don't track spectators | |
100 | hijing->SetSpectators(0); | |
101 | // kinematic selection | |
102 | hijing->SetSelectAll(0); | |
103 | // | |
104 | AliGenSlowNucleons* gray = new AliGenSlowNucleons(1); | |
105 | AliSlowNucleonModel* model = new AliSlowNucleonModelExp(); | |
106 | gray->SetSlowNucleonModel(model); | |
107 | gray->SetDebug(1); | |
108 | ||
109 | ||
110 | gener->AddGenerator(hijing,"Hijing pPb", 1); | |
111 | gener->AddGenerator(gray, "Gray Particles",1); | |
112 | ||
113 | return gener; | |
114 | } | |
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