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6ef73001 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | /// \ingroup macros | |
19 | /// \file genTestConfig.C | |
20 | /// \brief Configuration macro for event generator | |
21 | /// for MUON spectrometer Monte Carlo simulation | |
22 | ||
23 | Float_t EtaToTheta(Float_t arg); | |
24 | ||
25 | AliGenerator* genConfig(char option[6]="param") | |
26 | { | |
27 | cout << "Running genTestConfig.C ... " << endl; | |
28 | ||
29 | //======================================================================= | |
30 | // ******* GEANT STEERING parameters FOR ALICE SIMULATION ******* | |
31 | if ( gMC ) { | |
32 | gMC->SetProcess("DCAY",1); | |
33 | gMC->SetProcess("PAIR",1); | |
34 | gMC->SetProcess("COMP",1); | |
35 | gMC->SetProcess("PHOT",1); | |
36 | gMC->SetProcess("PFIS",0); | |
37 | gMC->SetProcess("DRAY",0); | |
38 | gMC->SetProcess("ANNI",1); | |
39 | gMC->SetProcess("BREM",1); | |
40 | gMC->SetProcess("MUNU",1); | |
41 | gMC->SetProcess("CKOV",1); | |
42 | gMC->SetProcess("HADR",1); | |
43 | gMC->SetProcess("LOSS",2); | |
44 | gMC->SetProcess("MULS",1); | |
45 | gMC->SetProcess("RAYL",1); | |
46 | Float_t cut = 1.e-3; // 1MeV cut by default | |
47 | Float_t tofmax = 1.e10; | |
48 | gMC->SetCut("CUTGAM", cut); | |
49 | gMC->SetCut("CUTELE", cut); | |
50 | gMC->SetCut("CUTNEU", cut); | |
51 | gMC->SetCut("CUTHAD", cut); | |
52 | gMC->SetCut("CUTMUO", cut); | |
53 | gMC->SetCut("BCUTE", cut); | |
54 | gMC->SetCut("BCUTM", cut); | |
55 | gMC->SetCut("DCUTE", cut); | |
56 | gMC->SetCut("DCUTM", cut); | |
57 | gMC->SetCut("PPCUTM", cut); | |
58 | gMC->SetCut("TOFMAX", tofmax); | |
59 | } | |
60 | ||
61 | // Set External decayer | |
62 | TVirtualMCDecayer *decayer = new AliDecayerPythia(); | |
63 | decayer->SetForceDecay(kAll); | |
64 | decayer->Init(); | |
65 | if ( gMC ) gMC->SetExternalDecayer(decayer); | |
66 | ||
67 | //======================================================================= | |
68 | // Examples of generators. Only option param is sistematically tested | |
69 | if (!strcmp(option,"box")) { | |
70 | AliGenBox * gener = new AliGenBox(1); | |
71 | gener->SetMomentumRange(20.,20.1); | |
72 | gener->SetPhiRange(0., 360.); | |
73 | gener->SetThetaRange(171.000,178.001); | |
74 | gener->SetPart(kMuonMinus); // Muons | |
75 | gener->SetOrigin(0.,0., 0.); //vertex position | |
76 | gener->SetSigma(0.0, 0.0, 0.0); //Sigma in (X,Y,Z) (cm) on IP position | |
77 | } | |
78 | if (!strcmp(option,"gun")) { | |
79 | AliGenFixed *gener = new AliGenFixed(1); | |
80 | gener->SetMomentum(10); | |
81 | gener->SetPhiRange(0.); | |
82 | gener->SetThetaRange(0.); | |
83 | gener->SetOrigin(30,30,-1200);//vertex position | |
84 | gener->SetPart(kMuonMinus); //GEANT particle type 13 is muons | |
85 | } | |
86 | if (!strcmp(option,"scan")) { | |
87 | AliGenScan *gener = new AliGenScan(-1); | |
88 | gener->SetMomentumRange(10,10); | |
89 | gener->SetPhiRange(0, 0); | |
90 | gener->SetThetaRange(-180, -180); | |
91 | //vertex position | |
92 | //gener->SetSigma(1,1,0); //Sigma in (X,Y,Z) (cm) on IP position | |
93 | gener->SetPart(kRootino); | |
94 | gener->SetRange(100, -300., 300., 100, -300., 300., 1, 2000, 2000); | |
95 | } | |
96 | if (!strcmp(option,"param")) { | |
97 | AliGenParam *gener = new AliGenParam(1, AliGenMUONlib::kUpsilon); | |
98 | gener->SetMomentumRange(0,999); | |
99 | gener->SetPtRange(0,100.); | |
100 | gener->SetPhiRange(0., 360.); | |
101 | gener->SetCutOnChild(1); | |
102 | gener->SetChildPhiRange(0.,360.); | |
103 | gener->SetChildThetaRange(171.0,178.0); | |
104 | gener->SetOrigin(0,0,0); //vertex position gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position | |
105 | gener->SetForceDecay(kDiMuon); | |
106 | gener->SetTrackingFlag(1); | |
107 | } | |
108 | if (!strcmp(option,"paramJpsi")) { | |
109 | AliGenParam *gener = new AliGenParam(1, AliGenMUONlib::kJpsi); | |
110 | gener->SetMomentumRange(0,999); | |
111 | gener->SetPtRange(0,100.); | |
112 | gener->SetPhiRange(0., 360.); | |
113 | gener->SetCutOnChild(1); | |
114 | gener->SetChildPhiRange(0.,360.); | |
115 | gener->SetChildThetaRange(171.0,178.0); | |
116 | gener->SetOrigin(0,0,0); | |
117 | gener->SetForceDecay(kDiMuon); | |
118 | gener->SetTrackingFlag(1); | |
119 | } | |
120 | if (!strcmp(option,"hijing")) { //Hijing generator from ConfigPPR in macros | |
121 | AliGenHijing *gener = new AliGenHijing(-1); | |
122 | // centre of mass energy | |
123 | gener->SetEnergyCMS(5500.); | |
124 | // reference frame | |
125 | gener->SetReferenceFrame("CMS"); | |
126 | // projectile | |
127 | gener->SetProjectile("A", 208, 82); | |
128 | gener->SetTarget ("A", 208, 82); | |
129 | // tell hijing to keep the full parent child chain | |
130 | gener->KeepFullEvent(); | |
131 | // enable jet quenching | |
132 | gener->SetJetQuenching(1); | |
133 | // enable shadowing | |
134 | gener->SetShadowing(1); | |
135 | // neutral pion and heavy particle decays switched off | |
136 | gener->SetDecaysOff(1); | |
137 | // Don't track spectators | |
138 | gener->SetSpectators(0); | |
139 | // kinematic selection | |
140 | gener->SetSelectAll(0); | |
141 | // impact parameter range | |
142 | gener->SetImpactParameterRange(0., 5.); // 0. - 5. fm corresponds to ~10% most central | |
143 | } | |
144 | if (!strcmp(option,"muoncocktail")) { // Muon cocktail for PbPb | |
145 | AliGenMUONCocktail * gener = new AliGenMUONCocktail(); | |
146 | gener->SetPtRange(1.,100.); // Transverse momentum range | |
147 | gener->SetPhiRange(0.,360.); // Azimuthal angle range | |
148 | gener->SetYRange(-4.0,-2.5); | |
149 | gener->SetMuonPtCut(0.5); | |
150 | gener->SetMuonThetaCut(171.,178.); | |
151 | gener->SetMuonMultiplicity(2); | |
152 | gener->SetImpactParameterRange(0.,5.); // 10% most centra PbPb collisions | |
153 | gener->SetVertexSmear(kPerTrack); | |
154 | gener->SetOrigin(0,0,0); // Vertex position | |
155 | gener->SetSigma(0,0,0.0); // Sigma in (X,Y,Z) (cm) on IP position | |
156 | } | |
157 | ||
158 | gener->SetDecayer(decayer); | |
159 | gener->Init(); | |
160 | return gener; | |
161 | ||
162 | cout << "Running genGunConfig.C finished ... " << endl; | |
163 | } | |
164 | ||
165 | Float_t EtaToTheta(Float_t arg){ | |
166 | return (180./TMath::Pi())*2.*atan(exp(-arg)); | |
167 | } |