1 enum gentype_t {hijing, gun, box, pythia, param, cocktail, fluka, halo, ntuple, scan, doublescan};
3 gentype_t gentype=param;
8 gSystem->Load("libgeant321");
9 new TGeant3("C++ Interface to Geant3");
10 TGeant3 *geant3 = (TGeant3*)gMC;
12 //=======================================================================
13 // Create the output file
15 TFile *rootfile = new TFile("galice.root","recreate");
16 rootfile->SetCompressionLevel(2);
17 TGeant3 *geant3 = (TGeant3*)gMC;
20 //=======================================================================
21 // ******* GEANT STEERING parameters FOR ALICE SIMULATION *******
22 geant3->fGctrak->maxnst=1000000;
24 geant3->SetTRIG(1); //Number of events to be processed
25 geant3->SetSWIT(4,100);
26 geant3->SetDEBU(0,0,1);
37 geant3->SetHADR(4); //Select pure GEANH (HADR 1) or GEANH/NUCRIN (HADR 3)
41 geant3->SetAUTO(0); //Select automatic STMIN etc... calc. (AUTO 1) or manual (AUTO 0)
42 geant3->SetABAN(0); //Restore 3.16 behaviour for abandoned tracks
43 geant3->SetOPTI(2); //Select optimisation level for GEANT geometry searches (0,1,2)
44 Float_t cut = 1.e-1; // 100MeV cut by default
45 Float_t tofmax = 1.e10;
46 // GAM ELEC NHAD CHAD MUON EBREM MUHAB EDEL MUDEL MUPA TOFMAX
47 geant3->SetCUTS(1.e-4, 1.e-4, 1.e-3, 1.e-4, 1.e-4, cut, cut, cut, cut, cut, 1.e-5);
49 gAlice->TrackingLimits( 700, 2200);
52 //=======================================================================
53 // ************* STEERING parameters FOR ALICE SIMULATION **************
54 // --- Specify event type to be tracked through the ALICE setup
55 // --- All positions are in cm, angles in degrees, and P and E in GeV
60 //*********************************************
61 // Example for Fixed Particle Gun *
62 //*********************************************
63 AliGenFixed *gener = new AliGenFixed(ntracks);
64 gener->SetMomentum(3);
65 gener->SetPhiRange(0);
66 gener->SetThetaRange(0);
67 gener->SetOrigin(0,0,0); //vertex position
68 gener->SetPart(kProton); //GEANT particle type
71 //*********************************************
72 // Example for Moving Particle Gun *
73 //*********************************************
74 AliGenBox *gener = new AliGenBox(ntracks);
75 gener->SetMomentumRange(3,4);
76 gener->SetPhiRange(-360,360);
77 gener->SetThetaRange(2., 10.);
78 gener->SetOrigin(25,25,510.5);
79 gener->SetVertexSmear(kPerTrack);
81 gener->SetSigma(1.8, 1.8,0); //Sigma in (X,Y,Z) (cm) on IP position
82 gener->SetPart(kProton); //GEANT particle type
85 //*********************************************
86 // Scanning on a grid *
87 //*********************************************
88 AliGenScan *gener = new AliGenScan(-1);
89 gener->SetMomentumRange(20,20);
90 gener->SetPhiRange(90,90);
91 gener->SetThetaRange(0,0);
93 gener->SetSigma(3,3,0); //Sigma in (X,Y,Z) (cm) on IP position
94 gener->SetPart(kMuonMinus);
95 gener->SetRange(20, -100, 100, 20, -100, 100, 1, 500, 500);
98 //*********************************************
99 // Scanning on a grid *
100 //*********************************************
101 AliGenDoubleScan *gener = new AliGenDoubleScan(-1);
102 gener->SetMomentumRange(4,4);
103 gener->SetPhiRange(0,360);
104 gener->SetThetaRange(0,0);
106 gener->SetSigma(3,3,0); //Sigma in (X,Y,Z) (cm) on IP position
108 gener->SetRange(20, -100, 100, 20, -100, 100, 1, 500, 500);
109 gener->SetDistance(1);
114 AliGenHIJINGpara *gener = new AliGenHIJINGpara(ntracks);
115 gener->SetMomentumRange(0,999);
116 gener->SetPhiRange(0,360);
117 gener->SetThetaRange(0.104,33.52);
118 gener->SetOrigin(0,0,0); //vertex position
119 gener->SetSigma(0,0,5.6); //Sigma in (X,Y,Z) (cm) on IP position
123 //********************************************
124 // Example for Charm Production with Pythia *
125 //********************************************
127 AliGenPythia *gener = new AliGenPythia(ntracks);
128 gener->SetMomentumRange(0,999);
129 gener->SetPhiRange(0,360);
130 gener->SetThetaRange(0., 180.);
131 gener->SetYRange(-10,10);
132 gener->SetPtRange(0,100);
133 gener->SetOrigin(0,0,0); // vertex position
134 gener->SetVertexSmear(kPerEvent);
135 gener->SetSigma(0,0,5.6); // Sigma in (X,Y,Z) (cm) on IP position
136 gener->SetProcess(kPyCharm);
137 gener->SetEnergyCMS(5500.);
141 //*******************************************************
142 // Example for J/psi Production from Parameterisation *
143 //*******************************************************
144 AliGenParam *gener = new AliGenParam(ntracks, AliGenMUONlib::kUpsilon);
145 gener->SetMomentumRange(0,999);
146 gener->SetPtRange(0,100.);
147 gener->SetPhiRange(0,360);
148 gener->SetYRange(2.5,4);
149 gener->SetPtRange(0,50);
150 gener->SetOrigin(0,0,0); //vertex position
151 gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position
152 gener->SetForceDecay(kDiMuon);
153 gener->SetCutOnChild(1);
154 gener->SetChildThetaRange(2,9);
155 gener->SetTrackingFlag(1);
160 //*******************************************************
161 // Example for a FLUKA Boundary Source *
162 //*******************************************************
163 AliGenFLUKAsource *gener = new AliGenFLUKAsource(-1);
164 gener->AddFile("$(ALICE_ROOT)/data/all32.root");
166 gener->SetPartFlag(7);
167 gener->SetMomentumRange(0,999);
168 gener->SetPhiRange(0,360);
169 gener->SetThetaRange(0., 180.);
170 gener->SetAgeMax(1.e-5);
173 gener->SetFraction(0.0315);
177 //*******************************************************
178 // Example for reading from a external file *
179 //*******************************************************
180 AliGenExtFile *gener = new AliGenExtFile(-1);
181 gener->SetFileName("$(ALICE_ROOT)/data/pbpb.root");
182 gener->SetThetaRange(0.104,33.52);
183 gener->SetOrigin(0,0,0); //vertex position
184 gener->SetSigma(0,0,5.6); //Sigma in (X,Y,Z) (cm) on IP position
185 gener->SetVertexSmear(kPerTrack);
186 gener->SetTrackingFlag(1);
190 //*******************************************************
191 // Example for Tunnel Halo Source *
192 //*******************************************************
193 AliGenHalo *gener = new AliGenHalo(ntracks);
194 gener->SetFileName("/h1/morsch/marsip/marsip5.mu");
198 //*******************************************************
199 // Example for a Cocktail *
200 //*******************************************************
201 AliGenCocktail *gener = new AliGenCocktail();
202 gener->SetMomentumRange(0,10);
203 gener->SetPhiRange(0,360);
204 gener->SetThetaRange(45.,135);
206 pions = new AliGenParam(100, AliGenMUONlib::kPion);
207 gener->AddGenerator(pions , "Pions" , 100);
211 // Activate this line if you want the vertex smearing to happen
216 gAlice->SetField(-2,1); //Specify maximum magnetic field in Tesla (neg. ==> default field)
224 //=================== Alice BODY parameters =============================
225 AliBODY *BODY = new AliBODY("BODY","Alice envelop");
228 //=================== MAG parameters ============================
229 // --- Start with Magnet since detector layouts may be depending ---
230 // --- on the selected Magnet dimensions ---
231 AliMAG *MAG = new AliMAG("MAG","Magnet");
235 //=================== ABSO parameters ============================
236 AliABSO *ABSO = new AliABSOv1("ABSO","Muon Absorber");
240 //=================== DIPO parameters ============================
242 AliDIPO *DIPO = new AliDIPOv2("DIPO","Dipole version 2");
247 //=================== SHIL parameters ============================
248 AliSHIL *SHIL = new AliSHILv1("SHIL","Shielding");
253 //=================== PIPE parameters ============================
254 AliPIPE *PIPE = new AliPIPEv0("PIPE","Beam Pipe");
259 //=================== MUON parameters ===========================
261 AliMUON *MUON = new AliMUONv0("MUON","normal MUON");
262 MUON->SetAcceptance(kTRUE, 0.1, 12.);
264 MUON->SetMaxStepGas(0.1);
265 MUON->SetMaxStepAlu(0.1);