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Commit | Line | Data |
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267e5cd8 | 1 | // $Id$ |
2 | // | |
3 | // AliRoot Configuration for running aliroot with Monte Carlo. | |
250872b3 | 4 | // genExtFileConfig() includes the common setting for all MCs |
267e5cd8 | 5 | // which has to be called after MC is instantiated. |
6 | // Called from MC specific configs (g3Config.C, g4Config.C). | |
7 | // | |
8 | // Extracted from G3 specific Config.C | |
9 | // by I. Hrivnacova, IPN Orsay | |
10 | ||
11 | // Functions | |
12 | Float_t EtaToTheta(Float_t arg); | |
250872b3 | 13 | AliGenerator* GeneratorFactory(Int_t startEvent); |
267e5cd8 | 14 | |
250872b3 | 15 | void genExtFileConfig(Int_t startEvent=0) |
267e5cd8 | 16 | { |
17 | cout << "Running genExtFileConfig.C ... " << endl; | |
18 | ||
19 | //======================================================================= | |
20 | // Steering parameters for ALICE simulation | |
21 | //======================================================================= | |
22 | ||
23 | gMC->SetProcess("DCAY",1); | |
24 | gMC->SetProcess("PAIR",1); | |
25 | gMC->SetProcess("COMP",1); | |
26 | gMC->SetProcess("PHOT",1); | |
27 | gMC->SetProcess("PFIS",0); | |
28 | gMC->SetProcess("DRAY",0); | |
29 | gMC->SetProcess("ANNI",1); | |
30 | gMC->SetProcess("BREM",1); | |
31 | gMC->SetProcess("MUNU",1); | |
32 | gMC->SetProcess("CKOV",1); | |
33 | gMC->SetProcess("HADR",1); | |
34 | gMC->SetProcess("LOSS",2); | |
35 | gMC->SetProcess("MULS",1); | |
36 | //gMC->SetProcess("RAYL",1); | |
37 | ||
38 | Float_t cut = 1.e-3; // 1MeV cut by default | |
39 | Float_t tofmax = 1.e10; | |
40 | ||
41 | gMC->SetCut("CUTGAM", cut); | |
42 | gMC->SetCut("CUTELE", cut); | |
43 | gMC->SetCut("CUTNEU", cut); | |
44 | gMC->SetCut("CUTHAD", cut); | |
45 | gMC->SetCut("CUTMUO", cut); | |
46 | gMC->SetCut("BCUTE", cut); | |
47 | gMC->SetCut("BCUTM", cut); | |
48 | gMC->SetCut("DCUTE", cut); | |
49 | gMC->SetCut("DCUTM", cut); | |
50 | gMC->SetCut("PPCUTM", cut); | |
51 | gMC->SetCut("TOFMAX", tofmax); | |
52 | ||
53 | //======================================================================= | |
54 | // External decayer | |
55 | //======================================================================= | |
56 | ||
57 | TVirtualMCDecayer *decayer = new AliDecayerPythia(); | |
58 | decayer->SetForceDecay(kAll); | |
59 | decayer->Init(); | |
60 | /* | |
61 | //forbid some decays | |
62 | AliPythia * py= AliPythia::Instance(); | |
63 | py->SetMDME(737,1,0); //forbid D*+->D+ + pi0 | |
64 | py->SetMDME(738,1,0);//forbid D*+->D+ + gamma | |
65 | ||
66 | for(Int_t d=747; d<=762; d++){ | |
67 | py->SetMDME(d,1,0); | |
68 | } | |
69 | ||
70 | for(Int_t d=764; d<=807; d++){ | |
71 | py->SetMDME(d,1,0); | |
72 | } | |
73 | */ | |
74 | gMC->SetExternalDecayer(decayer); | |
75 | ||
76 | //======================================================================= | |
77 | // Event generator | |
78 | //======================================================================= | |
79 | ||
80 | // External generator configuration | |
250872b3 | 81 | AliGenerator* gener = GeneratorFactory(startEvent); |
267e5cd8 | 82 | gener->SetOrigin(0, 0, 0); // vertex position |
83 | //gener->SetSigma(0, 0, 5.3); // Sigma in (X,Y,Z) (cm) on IP position | |
84 | //gener->SetCutVertexZ(1.); // Truncate at 1 sigma | |
85 | //gener->SetVertexSmear(kPerEvent); | |
86 | gener->SetTrackingFlag(1); | |
87 | gener->Init(); | |
88 | ||
89 | cout << "Running genExtFileConfig.C finished ... " << endl; | |
90 | } | |
91 | ||
92 | Float_t EtaToTheta(Float_t arg){ | |
93 | return (180./TMath::Pi())*2.*atan(exp(-arg)); | |
94 | } | |
95 | ||
250872b3 | 96 | AliGenerator* GeneratorFactory(Int_t startEvent) { |
267e5cd8 | 97 | |
98 | AliGenExtFile *gener = new AliGenExtFile(-1); | |
99 | AliGenReaderTreeK * reader = new AliGenReaderTreeK(); | |
100 | ||
101 | reader->SetFileName("galice.root"); | |
102 | reader->AddDir("gen"); | |
103 | gener->SetReader(reader); | |
250872b3 | 104 | gener->SetStartEvent(startEvent); |
267e5cd8 | 105 | |
106 | return gener; | |
107 | } | |
108 |