1 // Config file MUON + ITS (for vertex) for PDC06
2 // Tuned for p+p min biais and quarkonia production (AliGenMUONCocktailpp)
3 // Remember to define the directory and option
4 // gAlice->SetConfigFunction("Config('$HOME','box');");
5 // april 3rd: added L3 magnet
8 void Config(char directory[100]="", char option[6]="trg1mu")
11 static Int_t sseed = 0; // Set 0 to use the current time
13 //=====================================================================
14 // Libraries required by geant321
15 // gSystem->Load("liblhapdf.so");
16 // gSystem->Load("libEGPythia6.so");
17 // gSystem->Load("libPythia6.so");
18 // gSystem->Load("libpythia6.so");
19 // gSystem->Load("libAliPythia6.so");
21 gSystem->Load("libgeant321.so");
22 new TGeant3TGeo("C++ Interface to Geant3");
24 //=======================================================================
26 if(!AliCDBManager::Instance()->IsDefaultStorageSet()){
27 AliCDBManager::Instance()->SetDefaultStorage("local://$ALICE_ROOT");
28 AliCDBManager::Instance()->SetRun(0);
31 // Set Random Number seed
32 gRandom->SetSeed(sseed);
34 // Create the output file
36 sprintf(filename,"%sgalice.root",directory);
39 rl = AliRunLoader::Open(
40 filename, AliConfig::GetDefaultEventFolderName(), "recreate");
42 gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
45 rl->SetCompressionLevel(2);
46 rl->SetNumberOfEventsPerFile(1000);
47 gAlice->SetRunLoader(rl);
48 // gAlice->SetGeometryFromFile("geometry.root");
49 // gAlice->SetGeometryFromCDB();
51 //=======================================================================
52 // Set the trigger configuration
53 gAlice->SetTriggerDescriptor("p-p");
54 cout<<"Trigger configuration is set to p-p"<<endl;
56 //=======================================================================
57 // Set External decayer
58 TVirtualMCDecayer *decayer = new AliDecayerPythia();
59 decayer->SetForceDecay(kAll);
61 gMC->SetExternalDecayer(decayer);
63 //=======================================================================
64 // ******* GEANT STEERING parameters FOR ALICE SIMULATION *******
65 gMC->SetProcess("DCAY",1);
66 gMC->SetProcess("PAIR",1);
67 gMC->SetProcess("COMP",1);
68 gMC->SetProcess("PHOT",1);
69 gMC->SetProcess("PFIS",0);
70 gMC->SetProcess("DRAY",0);
71 gMC->SetProcess("ANNI",1);
72 gMC->SetProcess("BREM",1);
73 gMC->SetProcess("MUNU",1);
74 gMC->SetProcess("CKOV",1);
75 gMC->SetProcess("HADR",1);
76 gMC->SetProcess("LOSS",2);
77 gMC->SetProcess("MULS",1);
78 gMC->SetProcess("RAYL",1);
80 Float_t cut = 1.e-3; // 1MeV cut by default
81 Float_t tofmax = 1.e10;
83 gMC->SetCut("CUTGAM", cut);
84 gMC->SetCut("CUTELE", cut);
85 gMC->SetCut("CUTNEU", cut);
86 gMC->SetCut("CUTHAD", cut);
87 gMC->SetCut("CUTMUO", cut);
88 gMC->SetCut("BCUTE", cut);
89 gMC->SetCut("BCUTM", cut);
90 gMC->SetCut("DCUTE", cut);
91 gMC->SetCut("DCUTM", cut);
92 gMC->SetCut("PPCUTM", cut);
93 gMC->SetCut("TOFMAX", tofmax);
95 //=======================================================================
96 // ************* STEERING parameters FOR ALICE SIMULATION **************
98 // From AliMUONConstants class we get :
99 // Position Z (along beam) of the chambers (in cm)
100 // (from AliMUONConstants class):
101 // 533.5, 546.5, 678.5, 693.5, 964.0, 986.0, 1251.5, 1278.5,
102 // 1416.5, 1443.5, 1610, 1625., 1710., 1725.
103 // Internal Radius (in cm)
104 // 36.4, 46.2, 66.0, 80., 80., 100., 100.
105 // External Radius (in cm)
106 // 183., 245., 395., 560., 563., 850., 900.
107 //=======================================================================
108 AliGenPythia* PythiaForMUONCocktail(Decay_t dt)
110 AliGenPythia *pythia = new AliGenPythia(1);
111 pythia->SetProcess(kPyMbMSEL1);
112 pythia->SetStrucFunc(kCTEQ5L);
113 pythia->SetEnergyCMS(14000.);
114 pythia->SetForceDecay(dt);
115 pythia->SetPtRange(0.,100.);
116 pythia->SetYRange(-8.,8.);
117 pythia->SetPhiRange(0.,360.);
118 pythia->SetPtHard(2.76,-1.0);
119 pythia->SwitchHFOff();
123 if (!strcmp(option,"trg2mu")) {
124 AliGenMUONCocktailpp *gener = new AliGenMUONCocktailpp();
125 gener->SetPtRange(0.,100.);
126 gener->SetYRange(-4.,-2.4);
127 gener->SetPhiRange(0.,360.);
128 gener->SetMuonMultiplicity(2);
129 gener->SetMuonPtCut(0.5);
130 gener->SetMuonThetaRange(171.,178.);
131 gener->SetOrigin(0.,0.,0.);
132 gener->SetSigma(0.,0.,5.);
133 gener->SetVertexSmear(kPerEvent);
134 Decay_t dt = gener->GetDecayModePythia(dt);
135 AliGenPythia* pythia = PythiaForMUONCocktail(dt);
137 gener->AddGenerator(pythia,"Pythia",1);
141 if (!strcmp(option,"trg1mu")) {
142 AliGenMUONCocktailpp *gener = new AliGenMUONCocktailpp();
143 gener->SetPtRange(0.,100.);
144 gener->SetYRange(-4.,-2.4);
145 gener->SetPhiRange(0.,360.);
146 gener->SetMuonMultiplicity(1);
147 gener->SetMuonPtCut(0.5);
148 gener->SetMuonThetaRange(171.,178.);
149 gener->SetOrigin(0.,0.,0.);
150 gener->SetSigma(0.,0.,5.);
151 gener->SetVertexSmear(kPerEvent);
152 Decay_t dt = gener->GetDecayModePythia();
153 AliGenPythia* pythia = PythiaForMUONCocktail(dt);
155 gener->AddGenerator(pythia,"Pythia",1);
158 //=============================================================
159 // Field (L3 0.5 T) outside dimuon spectrometer
160 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 2, 1., 10., AliMagFMaps::k5kG);
161 field->SetL3ConstField(0); // Using const. field in the barrel
162 gAlice->SetField(field);
174 //=================== Alice BODY parameters =============================
175 AliBODY *BODY = new AliBODY("BODY","Alice envelop");
176 //=================== ABSO parameters ============================
177 AliABSO *ABSO = new AliABSOv3("ABSO", "Muon Absorber");
178 //=================== DIPO parameters ============================
179 AliDIPO *DIPO = new AliDIPOv3("DIPO", "Dipole version 3");
180 //================== HALL parameters ============================
181 AliHALL *HALL = new AliHALLv3("HALL", "Alice Hall");
182 //================== The L3 Magnet ==============================
183 AliMAG *MAG = new AliMAG("MAG", "L3 Magnet");
184 //=================== PIPE parameters ============================
185 AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
186 //=================== SHIL parameters ============================
187 AliSHIL *SHIL = new AliSHILv3("SHIL", "Shielding Version 3");
188 //=================== ITS parameters =============================
190 AliITSvPPRasymmFMD *ITS = new AliITSvPPRasymmFMD("ITS","ITS PPR detailed version with asymmetric services");
192 //=================== ZDC parameters =============================
194 AliZDC *ZDC = new AliZDCv3("ZDC", "normal ZDC");
196 //=================== FMD parameters =============================
198 AliFMD *FMD = new AliFMDv1("FMD", "normal FMD");
200 //=================== PHOS parameters =============================
202 AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP");
204 //=================== PMD parameters =============================
206 AliPMD *PMD = new AliPMDv1("PMD", "normal PMD");
208 //=================== T0 parameters =============================
210 AliT0 *T0 = new AliT0v1("T0", "T0 Detector");
212 //=================== VZERO parameters =============================
214 AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
217 //=================== MUON Subsystem ===========================
218 cout << ">>> Config.C: Creating AliMUONv1 ..."<<endl;
220 // With the following compactor, what you get (in case you wonder...) is :
222 // - "FactoryV4", that is all stations using new segmentations/mapping
223 // - "sdigitizer:AliMUONSDigitizerV2", performing decalibration
224 // - "digitizer:NewDigitizerOldTrigger" <=> digitizer=AliMUONDigitizerV3,
225 // using the "old" trigger code, performing calibration
227 AliMUON *MUON = new AliMUONv1("MUON");
230 Float_t EtaToTheta(Float_t arg){
231 return (180./TMath::Pi())*2.*atan(exp(-arg));