3 // =============================
5 // =============================
7 // Create the output file
8 TFile *rootfile = new TFile("galice.root","recreate");
9 rootfile->SetCompressionLevel(2);
11 // Set External decayer
12 AliDecayer* decayer = new AliDecayerPythia();
13 decayer->SetForceDecay(kAll);
15 gMC->SetExternalDecayer(decayer);
17 // =============================
19 // =============================
21 // load Geant4 and AliRoot steer libraries
22 if (!gInterpreter->IsLoaded("g4libs.C")) gROOT->LoadMacro("g4libs.C");
23 gInterpreter->ProcessLine("g4libs()");
24 gInterpreter->ProcessLine("steerlibs()");
27 if (!gInterpreter->IsLoaded("g4menu.C")) gROOT->LoadMacro("g4menu.C");
28 gInterpreter->ProcessLine("CreateGeant4()");
30 // Physics process control
31 gMC ->SetProcess("DCAY",1);
32 gMC ->SetProcess("PAIR",1);
33 gMC ->SetProcess("COMP",1);
34 gMC ->SetProcess("PHOT",1);
35 gMC ->SetProcess("PFIS",0);
36 gMC ->SetProcess("DRAY",0);
37 gMC ->SetProcess("ANNI",1);
38 gMC ->SetProcess("BREM",1);
39 gMC ->SetProcess("MUNU",1);
40 //xx gMC ->SetProcess("CKOV",1);
41 gMC ->SetProcess("HADR",1); //Select pure GEANH (HADR 1) or GEANH/NUCRIN (HADR 3)
42 gMC ->SetProcess("LOSS",2);
43 gMC ->SetProcess("MULS",1);
44 //xx gMC ->SetProcess("RAYL",1);
48 Float_t cut = 1.e-3; // 1MeV cut by default
49 Float_t tofmax = 1.e10;
51 gMC ->SetCut("CUTGAM",cut);
52 gMC ->SetCut("CUTELE",cut);
53 gMC ->SetCut("CUTNEU",cut);
54 gMC ->SetCut("CUTHAD",cut);
55 gMC ->SetCut("CUTMUO",cut);
56 gMC ->SetCut("BCUTE",cut);
57 gMC ->SetCut("BCUTM",cut);
58 gMC ->SetCut("DCUTE",cut);
59 gMC ->SetCut("DCUTM",cut);
60 gMC ->SetCut("PPCUTM",cut);
61 gMC ->SetCut("TOFMAX",tofmax);
63 // =============================
65 // =============================
67 // --- Specify event type to be tracked through the ALICE setup
68 // --- All positions are in cm, angles in degrees, and P and E in GeV
71 if (gSystem->Getenv("CONFIG_NPARTICLES"))
72 nParticles = atoi(gSystem->Getenv("CONFIG_NPARTICLES"));
77 AliGenHIJINGpara *gener = new AliGenHIJINGpara(nParticles);
78 gener->SetMomentumRange(0,999);
79 gener->SetPhiRange(0,360);
80 // Set pseudorapidity range from -8 to 8.
81 Float_t thmin = EtaToTheta(8); // theta min. <---> eta max
82 Float_t thmax = EtaToTheta(-8); // theta max. <---> eta min
83 gener->SetThetaRange(thmin, thmax);
84 gener->SetOrigin(0,0,0); //vertex position
85 gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position
88 // Activate this line if you want the vertex smearing to happen
91 //gener->SetVertexSmear(perTrack);
93 // =============================
95 // =============================
97 //xx gAlice->SetField(-999,2); //Specify maximum magnetic field in Tesla (neg. ==> default field)
99 // =============================
101 // =============================
103 //Bool_t isSetInteractively = false;
104 Bool_t isSetInteractively = true;
106 if (!isSetInteractively) {
108 // Load modules libraries
109 gInterpreter->ProcessLine("detlibs()");
133 // Exclude detectors that do not work with Geant4
135 // Detectors with temporary problem
139 // Without any modification
142 //=================== Alice BODY parameters =============================
143 AliBODY *BODY = new AliBODY("BODY","Alice envelop");
147 //=================== MAG parameters ============================
148 // --- Start with Magnet since detector layouts may be depending ---
149 // --- on the selected Magnet dimensions ---
150 AliMAG *MAG = new AliMAG("MAG","Magnet");
155 //=================== ABSO parameters ============================
156 AliABSO *ABSO = new AliABSOv0("ABSO","Muon Absorber");
160 //=================== DIPO parameters ============================
162 AliDIPO *DIPO = new AliDIPOv2("DIPO","Dipole version 2");
166 //=================== HALL parameters ============================
168 AliHALL *HALL = new AliHALL("HALL","Alice Hall");
173 //=================== FRAME parameters ============================
175 AliFRAME *FRAME = new AliFRAMEv2("FRAME","Space Frame");
180 //=================== SHIL parameters ============================
182 AliSHIL *SHIL = new AliSHILv0("SHIL","Shielding");
187 //=================== PIPE parameters ============================
189 AliPIPE *PIPE = new AliPIPEv0("PIPE","Beam Pipe");
194 //=================== ITS parameters ============================
196 // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
197 // almost all other detectors. This involves the fact that the ITS geometry
198 // still has several options to be followed in parallel in order to determine
199 // the best set-up which minimizes the induced background. All the geometries
200 // available to date are described in the following. Read carefully the comments
201 // and use the default version (the only one uncommented) unless you are making
202 // comparisons and you know what you are doing. In this case just uncomment the
203 // ITS geometry you want to use and run Aliroot.
205 // Detailed geometries:
208 //AliITS *ITS = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
210 //AliITS *ITS = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
212 AliITSvPPRasymm *ITS = new AliITSvPPRasymm("ITS","New ITS PPR detailed version with asymmetric services");
213 ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer
214 ITS->SetReadDet(kFALSE); // don't touch this parameter if you're not an ITS developer
215 // ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det"); // don't touch this parameter if you're not an ITS developer
216 ITS->SetThicknessDet1(200.); // detector thickness on layer 1 must be in the range [100,300]
217 ITS->SetThicknessDet2(200.); // detector thickness on layer 2 must be in the range [100,300]
218 ITS->SetThicknessChip1(200.); // chip thickness on layer 1 must be in the range [150,300]
219 ITS->SetThicknessChip2(200.); // chip thickness on layer 2 must be in the range [150,300]
220 ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
221 ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon
223 //AliITSvPPRsymm *ITS = new AliITSvPPRsymm("ITS","New ITS PPR detailed version with symmetric services");
224 //ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer
225 //ITS->SetReadDet(kFALSE); // don't touch this parameter if you're not an ITS developer
226 //ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRsymm2.det"); // don't touch this parameter if you're not an ITS developer
227 //ITS->SetThicknessDet1(200.); // detector thickness on layer 1 must be in the range [100,300]
228 //ITS->SetThicknessDet2(200.); // detector thickness on layer 2 must be in the range [100,300]
229 //ITS->SetThicknessChip1(200.); // chip thickness on layer 1 must be in the range [150,300]
230 //ITS->SetThicknessChip2(200.); // chip thickness on layer 2 must be in the range [150,300]
231 //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
232 //ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon
235 // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful
236 // for reconstruction !):
239 //AliITSvPPRcoarseasymm *ITS = new AliITSvPPRcoarseasymm("ITS","New ITS PPR coarse version with asymmetric services");
240 //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
241 //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
243 //AliITS *ITS = new AliITSvPPRcoarsesymm("ITS","New ITS PPR coarse version with symmetric services");
244 //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
245 //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
249 // Geant3 <-> EUCLID conversion
250 // ============================
252 // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and
253 // media to two ASCII files (called by default ITSgeometry.euc and
254 // ITSgeometry.tme) in a format understandable to the CAD system EUCLID.
255 // The default (=0) means that you dont want to use this facility.
261 //============================ TPC parameters ================================
262 // --- This allows the user to specify sectors for the SLOW (TPC geometry 2)
263 // --- Simulator. SecAL (SecAU) <0 means that ALL lower (upper)
264 // --- sectors are specified, any value other than that requires at least one
265 // --- sector (lower or upper)to be specified!
266 // --- Reminder: sectors 1-24 are lower sectors (1-12 -> z>0, 13-24 -> z<0)
267 // --- sectors 25-72 are the upper ones (25-48 -> z>0, 49-72 -> z<0)
268 // --- SecLows - number of lower sectors specified (up to 6)
269 // --- SecUps - number of upper sectors specified (up to 12)
270 // --- Sens - sensitive strips for the Slow Simulator !!!
271 // --- This does NOT work if all S or L-sectors are specified, i.e.
272 // --- if SecAL or SecAU < 0
275 //-----------------------------------------------------------------------------
277 // gROOT->LoadMacro("SetTPCParam.C");
278 // AliTPCParam *param = SetTPCParam();
279 AliTPC *TPC = new AliTPCv2("TPC","Default");
280 // All sectors included
287 //=================== TOF parameters ============================
288 AliTOF *TOF = new AliTOFv2("TOF","normal TOF");
292 //=================== RICH parameters ===========================
293 AliRICH *RICH = new AliRICHv1("RICH","normal RICH");
299 //=================== ZDC parameters ============================
301 AliZDC *ZDC = new AliZDCv1("ZDC","normal ZDC");
305 //=================== CASTOR parameters ============================
307 AliCASTOR *CASTOR = new AliCASTORv1("CASTOR","normal CASTOR");
311 //=================== TRD parameters ============================
313 AliTRD *TRD = new AliTRDv1("TRD","TRD slow simulator");
315 // Select the gas mixture (0: 97% Xe + 3% isobutane, 1: 90% Xe + 10% CO2)
318 // With hole in front of PHOS
320 // With hole in front of RICH
323 AliTRDsim *TRDsim = TRD->CreateTR();
327 //=================== FMD parameters ============================
329 AliFMD *FMD = new AliFMDv1("FMD","normal FMD");
330 FMD->SetRingsSi1(128);
331 FMD->SetRingsSi2(64);
332 FMD->SetSectorsSi1(20);
333 FMD->SetSectorsSi2(24);
337 //=================== MUON parameters ===========================
339 AliMUON *MUON = new AliMUONv1("MUON","default");
342 //=================== PHOS parameters ===========================
345 AliPHOS *PHOS = new AliPHOSv1("PHOS","GPS2");
350 //=================== PMD parameters ============================
352 AliPMD *PMD = new AliPMDv1("PMD","normal PMD");
353 PMD->SetPAR(1., 1., 0.8, 0.02);
354 PMD->SetIN(6., 18., -580., 27., 27.);
355 PMD->SetGEO(0.0, 0.2, 4.);
356 PMD->SetPadSize(0.8, 1.0, 1.0, 1.5);
361 //=================== START parameters ============================
362 AliSTART *START = new AliSTARTv1("START","START Detector");
365 } // end (!isSetInteractively)
369 Float_t EtaToTheta(Float_t arg){
370 return (180./TMath::Pi())*2.*atan(exp(-arg));