3 // =============================
5 // =============================
7 // Create the output file
8 TFile *rootfile = new TFile("galice.root","recreate");
9 rootfile->SetCompressionLevel(2);
11 // =============================
13 // =============================
15 // load Geant4 and AliRoot steer libraries
16 if (!gInterpreter->IsLoaded("g4libs.C")) gROOT->LoadMacro("g4libs.C");
17 gInterpreter->ProcessLine("g4libs()");
18 gInterpreter->ProcessLine("steerlibs()");
21 if (!gInterpreter->IsLoaded("g4menu.C")) gROOT->LoadMacro("g4menu.C");
22 gInterpreter->ProcessLine("CreateGeant4()");
24 // Physics process control
26 gMC ->SetProcess("DCAY",1);
27 gMC ->SetProcess("PAIR",1);
28 gMC ->SetProcess("COMP",1);
29 gMC ->SetProcess("PHOT",1);
30 gMC ->SetProcess("PFIS",0);
31 gMC ->SetProcess("DRAY",0);
32 gMC ->SetProcess("ANNI",1);
33 gMC ->SetProcess("BREM",1);
34 gMC ->SetProcess("MUNU",1);
35 //xx gMC ->SetProcess("CKOV",1);
36 gMC ->SetProcess("HADR",1); //Select pure GEANH (HADR 1) or GEANH/NUCRIN (HADR 3)
37 gMC ->SetProcess("LOSS",2);
38 gMC ->SetProcess("MULS",1);
39 //xx gMC ->SetProcess("RAYL",1);
43 Float_t cut = 1.e-3; // 1MeV cut by default
44 gMC ->SetCut("CUTGAM",cut);
45 gMC ->SetCut("CUTELE",cut);
46 gMC ->SetCut("CUTNEU",cut);
47 gMC ->SetCut("CUTHAD",cut);
48 gMC ->SetCut("CUTMUO",cut);
49 gMC ->SetCut("BCUTE",cut);
50 gMC ->SetCut("BCUTM",cut);
51 gMC ->SetCut("DCUTE",cut);
52 gMC ->SetCut("DCUTM",cut);
53 //xx gMC ->SetCut("PPCUTM",cut);
55 // =============================
57 // =============================
59 // --- Specify event type to be tracked through the ALICE setup
60 // --- All positions are in cm, angles in degrees, and P and E in GeV
63 if (gSystem->Getenv("CONFIG_NPARTICLES"))
64 nParticles = atoi(gSystem->Getenv("CONFIG_NPARTICLES"));
68 AliGenHIJINGpara *gener = new AliGenHIJINGpara(nParticles);
69 gener->SetMomentumRange(0,999);
70 gener->SetPhiRange(0,360);
71 gener->SetThetaRange(0.,180.);
72 gener->SetOrigin(0,0,0); //vertex position
73 gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position
76 // Activate this line if you want the vertex smearing to happen
79 //gener->SetVertexSmear(perTrack);
81 // =============================
83 // =============================
85 //?? gAlice->SetField(-999,2); //Specify maximum magnetic field in Tesla (neg. ==> default field)
87 // =============================
89 // =============================
91 //Bool_t isSetInteractively = false;
92 Bool_t isSetInteractively = true;
94 if (!isSetInteractively) {
96 // Load modules libraries
97 gInterpreter->ProcessLine("detlibs()");
121 // Exclude detectors that do not work with Geant4
123 // Detectors with temporary problem
127 // Without any modification
130 //=================== Alice BODY parameters =============================
131 AliBODY *BODY = new AliBODY("BODY","Alice envelop");
135 //=================== MAG parameters ============================
136 // --- Start with Magnet since detector layouts may be depending ---
137 // --- on the selected Magnet dimensions ---
138 AliMAG *MAG = new AliMAG("MAG","Magnet");
143 //=================== ABSO parameters ============================
144 AliABSO *ABSO = new AliABSOv0("ABSO","Muon Absorber");
148 //=================== DIPO parameters ============================
150 AliDIPO *DIPO = new AliDIPOv2("DIPO","Dipole version 2");
154 //=================== HALL parameters ============================
156 AliHALL *HALL = new AliHALL("HALL","Alice Hall");
161 //=================== FRAME parameters ============================
163 AliFRAME *FRAME = new AliFRAMEv1("FRAME","Space Frame");
168 //=================== SHIL parameters ============================
170 AliSHIL *SHIL = new AliSHILv0("SHIL","Shielding");
175 //=================== PIPE parameters ============================
177 AliPIPE *PIPE = new AliPIPEv0("PIPE","Beam Pipe");
182 //=================== ITS parameters ============================
184 // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
185 // almost all other detectors. This involves the fact that the ITS geometry
186 // still has several options to be followed in parallel in order to determine
187 // the best set-up which minimizes the induced background. All the geometries
188 // available to date are described in the following. Read carefully the comments
189 // and use the default version (the only one uncommented) unless you are making
190 // comparisons and you know what you are doing. In this case just uncomment the
191 // ITS geometry you want to use and run Aliroot.
193 // Detailed geometries:
194 // ====================
197 //AliITS *ITS = new AliITSv3("ITS","Old ITS detailed version as of the ALICE TP");
199 //AliITS *ITS = new AliITSv5("ITS","Current ITS detailed version used for the ITS TDR");
201 //AliITS *ITS = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
203 AliITS *ITS = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
206 // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful for reconstruction !):
207 // ======================================================================================================================
210 //AliITS *ITS = new AliITSv1("ITS","Old ITS coarse version as of the ALICE TP");
212 //AliITS *ITS = new AliITSvPPRcoarseasymm("ITS","New ITS coarse version with asymmetric services");
214 //AliITS *ITS = new AliITSvPPRcoarsesymm("ITS","New ITS coarse version with symmetric services");
217 // Geant3 <-> EUCLID conversion
218 // ============================
220 // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and
221 // media to two ASCII files (called by default ITSgeometry.euc and
222 // ITSgeometry.tme) in a format understandable to the CAD system EUCLID.
223 // The default (=0) means that you dont want to use this facility.
230 //============================ TPC parameters ================================
231 // --- This allows the user to specify sectors for the SLOW (TPC geometry 2)
232 // --- Simulator. SecAL (SecAU) <0 means that ALL lower (upper)
233 // --- sectors are specified, any value other than that requires at least one
234 // --- sector (lower or upper)to be specified!
235 // --- Reminder: sectors 1-24 are lower sectors (1-12 -> z>0, 13-24 -> z<0)
236 // --- sectors 25-72 are the upper ones (25-48 -> z>0, 49-72 -> z<0)
237 // --- SecLows - number of lower sectors specified (up to 6)
238 // --- SecUps - number of upper sectors specified (up to 12)
239 // --- Sens - sensitive strips for the Slow Simulator !!!
240 // --- This does NOT work if all S or L-sectors are specified, i.e.
241 // --- if SecAL or SecAU < 0
244 //-----------------------------------------------------------------------------
246 // gROOT->LoadMacro("SetTPCParam.C");
247 // AliTPCParam *param = SetTPCParam();
248 AliTPC *TPC = new AliTPCv2("TPC","Default");
249 // All sectors included
256 //=================== TOF parameters ============================
257 AliTOF *TOF = new AliTOFv2("TOF","normal TOF");
261 //=================== RICH parameters ===========================
262 AliRICH *RICH = new AliRICHv1("RICH","normal RICH");
268 //=================== ZDC parameters ============================
270 AliZDC *ZDC = new AliZDCv1("ZDC","normal ZDC");
274 //=================== CASTOR parameters ============================
276 AliCASTOR *CASTOR = new AliCASTORv1("CASTOR","normal CASTOR");
280 //=================== TRD parameters ============================
282 AliTRD *TRD = new AliTRDv1("TRD","TRD slow simulator");
284 // Select the gas mixture (0: 97% Xe + 3% isobutane, 1: 90% Xe + 10% CO2)
287 // With hole in front of PHOS
289 // With hole in front of RICH
292 AliTRDsim *TRDsim = TRD->CreateTR();
296 //=================== FMD parameters ============================
298 AliFMD *FMD = new AliFMDv0("FMD","normal FMD");
302 //=================== MUON parameters ===========================
304 AliMUON *MUON = new AliMUONv0("MUON","normal MUON");
307 //=================== PHOS parameters ===========================
310 AliPHOS *PHOS = new AliPHOSv1("PHOS","GPS2");
315 //=================== PMD parameters ============================
317 AliPMD *PMD = new AliPMDv1("PMD","normal PMD");
318 PMD->SetPAR(1., 1., 0.8, 0.02);
319 PMD->SetIN(6., 18., -580., 27., 27.);
320 PMD->SetGEO(0.0, 0.2, 4.);
321 PMD->SetPadSize(0.8, 1.0, 1.0, 1.5);
326 //=================== START parameters ============================
327 AliSTART *START = new AliSTARTv1("START","START Detector");
330 } // end (!isSetInteractively)