Fixes for bug #52499: Field polarities inconsistiency
[u/mrichter/AliRoot.git] / doc / aliroot-primer / scripts / Config.C
CommitLineData
967f5306 1// Function converting pseudorapidity
2// interval to polar angle interval. It is used to set
3// the limits in the generator
4Float_t EtaToTheta(Float_t arg){
5 return (180./TMath::Pi())*2.*atan(exp(-arg));
6}
7
8// Set Random Number seed using the current time
9TDatime dat;
10static UInt_t sseed = dat.Get();
11
12void Config()
13{
14 gRandom->SetSeed(sseed);
15 cout<<"Seed for random number generation= "<<gRandom->GetSeed()<<endl;
16
17 // Load GEANT 3 library. It has to be in LD_LIBRARY_PATH
18 gSystem->Load("libgeant321");
19
20 // Instantiation of the particle transport package. gMC is set internaly
21 new TGeant3TGeo("C++ Interface to Geant3");
22
23 // Create run loader and set some properties
24 AliRunLoader* rl = AliRunLoader::Open("galice.root",
25 AliConfig::GetDefaultEventFolderName(),
26 "recreate");
27 if (!rl) Fatal("Config.C","Can not instatiate the Run Loader");
28 rl->SetCompressionLevel(2);
29 rl->SetNumberOfEventsPerFile(3);
30
31 // Register the run loader in gAlice
32 gAlice->SetRunLoader(rl);
33
34 // Set external decayer
35 TVirtualMCDecayer *decayer = new AliDecayerPythia();
36 decayer->SetForceDecay(kAll); // kAll means no specific decay is forced
37 decayer->Init();
38
39 // Register the external decayer in the transport package
40 gMC->SetExternalDecayer(decayer);
41
42 // STEERING parameters FOR ALICE SIMULATION
43 // Specify event type to be transported through the ALICE setup
44 // All positions are in cm, angles in degrees, and P and E in GeV
45 // For the details see the GEANT 3 manual
46
47 // Switch on/off the physics processes (global)
48 // Please consult the file data/galice.cuts for detector
49 // specific settings, i.e. DRAY
50 gMC->SetProcess("DCAY",1); // Particle decay
51 gMC->SetProcess("PAIR",1); // Pair production
52 gMC->SetProcess("COMP",1); // Compton scattering
53 gMC->SetProcess("PHOT",1); // Photo effect
54 gMC->SetProcess("PFIS",0); // Photo fission
55 gMC->SetProcess("DRAY",0); // Delta rays
56 gMC->SetProcess("ANNI",1); // Positron annihilation
57 gMC->SetProcess("BREM",1); // Bremstrahlung
58 gMC->SetProcess("MUNU",1); // Muon nuclear interactions
59 gMC->SetProcess("CKOV",1); // Cerenkov production
60 gMC->SetProcess("HADR",1); // Hadronic interactions
61 gMC->SetProcess("LOSS",2); // Energy loss (2=complete fluct.)
62 gMC->SetProcess("MULS",1); // Multiple scattering
63 gMC->SetProcess("RAYL",1); // Rayleigh scattering
64
65 // Set the transport package cuts
66 Float_t cut = 1.e-3; // 1MeV cut by default
67 Float_t tofmax = 1.e10;
68
69 gMC->SetCut("CUTGAM", cut); // Cut for gammas
70 gMC->SetCut("CUTELE", cut); // Cut for electrons
71 gMC->SetCut("CUTNEU", cut); // Cut for neutral hadrons
72 gMC->SetCut("CUTHAD", cut); // Cut for charged hadrons
73 gMC->SetCut("CUTMUO", cut); // Cut for muons
74 gMC->SetCut("BCUTE", cut); // Cut for electron brems.
75 gMC->SetCut("BCUTM", cut); // Cut for muon brems.
76 gMC->SetCut("DCUTE", cut); // Cut for electron delta-rays
77 gMC->SetCut("DCUTM", cut); // Cut for muon delta-rays
78 gMC->SetCut("PPCUTM", cut); // Cut for e+e- pairs by muons
79 gMC->SetCut("TOFMAX", tofmax); // Time of flight cut
80
81 // Set up the particle generation
82
83 // AliGenCocktail permits to combine several different generators
84 AliGenCocktail *gener = new AliGenCocktail();
85
86 // The phi range is always inside 0-360
87 gener->SetPhiRange(0, 360);
88
89 // Set pseudorapidity range from -8 to 8.
90 Float_t thmin = EtaToTheta(8); // theta min. <---> eta max
91 Float_t thmax = EtaToTheta(-8); // theta max. <---> eta min
92 gener->SetThetaRange(thmin,thmax);
93
94 gener->SetOrigin(0, 0, 0); // vertex position
95 gener->SetSigma(0, 0, 5.3); // Sigma in (X,Y,Z) (cm) on IP position
96 gener->SetCutVertexZ(1.); // Truncate at 1 sigma
97 gener->SetVertexSmear(kPerEvent);
98
99 // First cocktail component: 100 ``background'' particles
100 AliGenHIJINGpara *hijingparam = new AliGenHIJINGpara(100);
101 hijingparam->SetMomentumRange(0.2, 999);
102 gener->AddGenerator(hijingparam,"HIJING PARAM",1);
103
104 // Second cocktail component: one gamma in PHOS direction
105 AliGenBox *genbox = new AliGenBox(1);
106 genbox->SetMomentumRange(10,11.);
107 genbox->SetPhiRange(270.5,270.7);
108 genbox->SetThetaRange(90.5,90.7);
9bb2665f 109 genbox->SetPart(kGamma);
967f5306 110 gener->AddGenerator(genbox,"GENBOX GAMMA for PHOS",1);
111
112 gener->Init(); // Initialization of the coctail generator
113
114 // Field (the last parameter is 1 => L3 0.4 T)
99c7d495 115 TGeoGlobalMagField::Instance()->SetField(new AliMagF("Maps","Maps", 2, -1., -1., 10., AliMagF::k5kG));
967f5306 116
117 // Make sure the current ROOT directory is in galice.root
118 rl->CdGAFile();
119
120 // Build the setup and set some detector parameters
121
122 // ALICE BODY parameters. BODY is always present
123 AliBODY *BODY = new AliBODY("BODY", "ALICE envelop");
124
125 // Start with Magnet since detector layouts may be depending
126 // on the selected Magnet dimensions
127 AliMAG *MAG = new AliMAG("MAG", "Magnet");
128
129 AliABSO *ABSO = new AliABSOv0("ABSO", "Muon Absorber"); // Absorber
130
131 AliDIPO *DIPO = new AliDIPOv2("DIPO", "Dipole version 2"); // Dipole magnet
132
133 AliHALL *HALL = new AliHALL("HALL", "ALICE Hall"); // Hall
134
135 AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame"); // Space frame
136
137 AliSHIL *SHIL = new AliSHILv2("SHIL", "Shielding Version 2"); // Shielding
138
139 AliPIPE *PIPE = new AliPIPEv0("PIPE", "Beam Pipe"); // Beam pipe
140
141 // ITS parameters
142 AliITSvPPRasymmFMD *ITS = new AliITSvPPRasymmFMD("ITS",
143 "ITS PPR detailed version with asymmetric services");
144 ITS->SetMinorVersion(2); // don't change it if you're not an ITS developer
145 ITS->SetReadDet(kFALSE); // don't change it if you're not an ITS developer
146 ITS->SetThicknessDet1(200.); // detector thickness on layer 1:[100,300] mkm
147 ITS->SetThicknessDet2(200.); // detector thickness on layer 2:[100,300] mkm
148 ITS->SetThicknessChip1(150.); // chip thickness on layer 1: [150,300] mkm
149 ITS->SetThicknessChip2(150.); // chip thickness on layer 2: [150,300]
150 ITS->SetRails(0); // 1 --> rails in ; 0 --> rails out
151 ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon
152 ITS->SetEUCLID(0); // no output for the EUCLID CAD system
153
154
155 AliTPC *TPC = new AliTPCv2("TPC", "Default"); // TPC
156
157 AliTOF *TOF = new AliTOFv5T0("TOF", "normal TOF"); // TOF
158
de1857bb 159 AliHMPID *HMPID = new AliHMPIDv1("HMPID", "normal HMPID"); // HMPID
967f5306 160
161 AliZDC *ZDC = new AliZDCv2("ZDC", "normal ZDC"); // ZDC
162
163 AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator"); // TRD
164
165 AliFMD *FMD = new AliFMDv1("FMD", "normal FMD"); // FMD
166
167 AliMUON *MUON = new AliMUONv1("MUON", "default"); // MUON
168
169 AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP"); // PHOS
170
171 AliPMD *PMD = new AliPMDv1("PMD", "normal PMD"); // PMD
172
ababa197 173 AliT0 *T0 = new AliT0v1("T0", "T0 Detector"); // T0
967f5306 174
175 // EMCAL
8224b11d 176 AliEMCAL *EMCAL = new AliEMCALv2("EMCAL", "EMCAL_COMPLETE");
967f5306 177
178 AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO"); // VZERO
179}