enum gentype_t {hijing, hijingParam, gun, box, pythia, param1, param2, param3, param4, cocktail, fluka, halo, ntuple, scan, doublescan}; gentype_t gentype=param4; ntracks=1; void Config() { new AliGeant3("C++ Interface to Geant3"); //======================================================================= // Create the output file TFile *rootfile = new TFile("galice.root","recreate"); rootfile->SetCompressionLevel(2); TGeant3 *geant3 = (TGeant3*)gMC; // // Set External decayer AliDecayer* decayer = new AliDecayerPythia(); decayer->SetForceDecay(kAll); decayer->Init(); gMC->SetExternalDecayer(decayer); //======================================================================= // ******* GEANT STEERING parameters FOR ALICE SIMULATION ******* geant3->SetTRIG(1); //Number of events to be processed geant3->SetSWIT(4,10); geant3->SetDEBU(0,0,1); //geant3->SetSWIT(2,2); geant3->SetDCAY(1); geant3->SetPAIR(1); geant3->SetCOMP(1); geant3->SetPHOT(1); geant3->SetPFIS(0); geant3->SetDRAY(0); geant3->SetANNI(1); geant3->SetBREM(1); geant3->SetMUNU(1); geant3->SetCKOV(1); geant3->SetHADR(1); //Select pure GEANH (HADR 1) or GEANH/NUCRIN (HADR 3) geant3->SetLOSS(2); geant3->SetMULS(1); geant3->SetRAYL(1); geant3->SetAUTO(1); //Select automatic STMIN etc... calc. (AUTO 1) or manual (AUTO 0) geant3->SetABAN(0); //Restore 3.16 behaviour for abandoned tracks geant3->SetOPTI(2); //Select optimisation level for GEANT geometry searches (0,1,2) Float_t cut = 1.e-3; // 1MeV cut by default Float_t tofmax = 1.e10; // GAM ELEC NHAD CHAD MUON EBREM MUHAB EDEL MUDEL MUPA TOFMAX geant3->SetCUTS(cut,cut, cut, cut, cut, cut, cut, cut, cut, cut, tofmax); // //======================================================================= // ************* STEERING parameters FOR ALICE SIMULATION ************** // --- Specify event type to be tracked through the ALICE setup // --- All positions are in cm, angles in degrees, and P and E in GeV switch(gentype) { case gun: //********************************************* // Example for Fixed Particle Gun //********************************************* AliGenFixed *gener = new AliGenFixed(ntracks); gener->SetMomentum(50); gener->SetPhi(180.); gener->SetTheta(5.); gener->SetOrigin(0,0,0); //vertex position gener->SetPart(13); //GEANT particle type break; case box: //********************************************* // Example for Moving Particle Gun * //********************************************* AliGenBox *gener = new AliGenBox(ntracks); gener->SetMomentumRange(3,4); gener->SetPhiRange(0,360); gener->SetThetaRange(90, 180. ); gener->SetOrigin(0,0,0); //vertex position gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position gener->SetPart(5); //GEANT particle type break; case scan: //********************************************* // Scanning on a grid * //********************************************* AliGenScan *gener = new AliGenScan(-1); gener->SetMomentumRange(4,4); gener->SetPhiRange(0,360); gener->SetThetaRange(9,9); //vertex position gener->SetSigma(6,6,0); //Sigma in (X,Y,Z) (cm) on IP position gener->SetPart(5); gener->SetRange(20, -100, 100, 20, -100, 100, 1, 500, 500); break; case hijingParam: AliGenHIJINGpara *gener = new AliGenHIJINGpara(ntracks); gener->SetMomentumRange(0,999); gener->SetPhiRange(0,360); gener->SetThetaRange(2,10); gener->SetOrigin(0,0,0); //vertex position gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position break; case hijing: AliGenHijing *gener = new AliGenHijing(-1); // centre of mass energy gener->SetEnergyCMS(5500); // reference frame gener->SetReferenceFrame("CMS "); // projectile gener->SetProjectile("A ", 208, 82); gener->SetTarget ("A ", 208, 82); // impact parameter range gener->SetImpactParameterRange(0, 3.); // evaluate cross section before run gener->SetEvaluate(1); // tell hijing to keep the full parent child chain gener->KeepFullEvent(); // enable jet quenching gener->SetJetQuenching(1); // enable shadowing gener->SetShadowing(1); // neutral pion and heavy particle decays switched off gener->SetDecaysOff(1); // trigger gener->SetTrigger(0); // kinematic selection gener->SetSelectAll(0); // momentum range gener->SetMomentumRange(0,999); // phi range gener->SetPhiRange(-180,180); // theta range gener->SetThetaRange(0,180.); // select flavor (0: no, 4: charm+beauty, 5:beauty) gener->SetFlavor(4); // gener->SetOrigin(0., 0.0 ,0); gener->SetSigma(0,0,5.3); gener->SetVertexSmear(kPerEvent); // no tracking gener->SetTrackingFlag(0); break; case pythia: //******************************************** // Example for Charm Production with Pythia * //******************************************** AliGenPythia *gener = new AliGenPythia(-1); // final state kinematic cuts gener->SetMomentumRange(0,999); gener->SetPhiRange(-180,180); gener->SetThetaRange(0., 180.); gener->SetYRange(-10,10); gener->SetPtRange(0,100); // vertex position and smearing gener->SetOrigin(0,0,0); // vertex position gener->SetVertexSmear(kPerEvent); gener->SetSigma(0,0,5.6); // Sigma in (X,Y,Z) (cm) on IP position // Structure function // DO_Set_1 // GRV_LO // GRV_HO // MRS_D_minus // MRS_D0 // MRS_G // CTEQ_2pM // CTEQ_4M gener->SetStrucFunc(kGRV_HO); // Select corection for nuclear structure functions // gener->SetNuclei(208,208); // // Process type // charm, beauty, charm_unforced, beauty_unforced, jpsi, jpsi_chi, mb gener->SetProcess(kPyBeauty); // // Pt transfer of the hard scattering gener->SetPtHard(0.,5.); // Decay type (semielectronic, semimuonic, nodecay) gener->SetForceDecay(kSemiElectronic); // Centre of mass energy gener->SetEnergyCMS(5500.); // No Tracking gener->SetTrackingFlag(0); break; case param1: //******************************************************* // Example for J/psi Production from Parameterisation // using default library (AliMUONlib) //******************************************************* AliGenParam *gener = new AliGenParam(ntracks, AliGenMUONlib::kUpsilon); gener->SetMomentumRange(0,999); gener->SetPtRange(0,999); gener->SetPhiRange(-180, 180); gener->SetYRange(2.5,4); gener->SetCutOnChild(1); gener->SetChildThetaRange(2,9); gener->SetOrigin(0,0,0); //vertex position gener->SetSigma(0,0,5.3); //Sigma in (X,Y,Z) (cm) on IP position gener->SetForceDecay(kDiMuon); gener->SetTrackingFlag(0); break; case param2: //******************************************************* // Example for Omega Production from Parameterisation // specifying library. //******************************************************* AliGenParam *gener = new AliGenParam(1000,new AliGenPHOSlib(), AliGenPHOSlib::kOmega); gener->SetWeighting(kNonAnalog); gener->SetForceDecay(kNoDecay); gener->SetPtRange(0,100); gener->SetThetaRange(45,135); gener->SetTrackingFlag(0); break; case param3: //******************************************************* // Example for Upsilon Production from Parameterisation // specifying library. // GSI style //******************************************************* AliGenParam *gener = new AliGenParam(1000,new AliGenGSIlib(), AliGenGSIlib::kUpsilon, "MUON"); gener->SetMomentumRange(0,999); gener->SetPtRange(0,999); gener->SetPhiRange(-180, 180); gener->SetYRange(2.5,4); gener->SetCutOnChild(1); gener->SetChildThetaRange(2,9); gener->SetOrigin(0,0,0); //vertex position gener->SetSigma(0,0,5.3); //Sigma in (X,Y,Z) (cm) on IP position gener->SetForceDecay(kDiMuon); gener->SetTrackingFlag(0); break; case param4: //******************************************************* // Example for Omega Production from Parameterisation // specifying library. // The alternative way. //******************************************************* AliGenLib* Lib=new AliGenPHOSlib(); Int_t iOmega = AliGenPHOSlib::kOmega; AliGenParam *gener = new AliGenParam(50, iOmega, Lib->GetPt(iOmega, ""), Lib->GetY (iOmega, ""), Lib->GetIp(iOmega, "")); gener->SetWeighting(kNonAnalog); gener->SetForceDecay(kNoDecay); gener->SetTrackingFlag(0); break; case fluka: //******************************************************* // Example for a FLUKA Boundary Source * //******************************************************* AliGenFLUKAsource *gener = new AliGenFLUKAsource(-1); gener->SetFileName("$(ALICE_ROOT)/data/all32.root"); gener->SetPartFlag(9); gener->SetAgeMax(1.e-5); // 31.7 events gener->SetFraction(0.0315); // gener->SetFraction(0.75*0.0315); rootfile->cd(); // gener->SetPartFlag(10); gener->SetMomentumRange(0,999); gener->SetPhiRange(0,360); gener->SetThetaRange(0., 180.); gener->SetAgeMax(1.e-5); // 31.7 events // gener->SetFraction(0.0315); break; case ntuple: //******************************************************* // Example for reading from a external file * //******************************************************* AliGenExtFile *gener = new AliGenExtFile(-1); gener->SetFileName("$(ALICE_ROOT)/data/dtujet93.root"); gener->SetVertexSmear(kPerEvent); gener->SetTrackingFlag(1); break; case halo: //******************************************************* // Example for Tunnel Halo Source * //******************************************************* AliGenHalo *gener = new AliGenHalo(ntracks); gener->SetFileName("/h1/morsch/marsip/marsip5.mu"); break; case cocktail: //******************************************************* // Example for a Cocktail * //******************************************************* AliGenCocktail *gener = new AliGenCocktail(); gener->SetPhiRange(0,360); gener->SetYRange(2.5,4); gener->SetThetaRange(2,9); gener->SetPtRange(0,10); gener->SetOrigin(0,0,0); //vertex position gener->SetSigma(0,0,0); //Sigma in (X,Y,Z) (cm) on IP position gener->SetMomentumRange(0,999); AliGenParam *jpsi = new AliGenParam(1,jpsi_p); jpsi->SetForceDecay(dimuon); jpsi->SetCutOnChild(1); AliGenFLUKAsource *bg = new AliGenFLUKAsource(-1); bg->AddFile("$(ALICE_ROOT)/data/all32.root"); rootfile->cd(); bg->SetPartFlag(9); bg->SetAgeMax(1.e-5); // 31.7 events // gener->SetFraction(0.0315); bg->SetFraction(0.01*0.0315); gener->AddGenerator(jpsi,"J/Psi", 1); gener->AddGenerator(bg,"Background",1); break; } // Activate this line if you want the vertex smearing to happen // track by track // // gener->SetVertexSmear(kPerTrack); gener->Init(); gAlice->SetField(-999,2); //Specify maximum magnetic field in Tesla (neg. ==> default field) Int_t iMAG=1; //=================== Alice BODY parameters ============================= AliBODY *BODY = new AliBODY("BODY","Alice envelop"); if(iMAG) { //=================== MAG parameters ============================ // --- Start with Magnet since detector layouts may be depending --- // --- on the selected Magnet dimensions --- AliMAG *MAG = new AliMAG("MAG","Magnet"); } }