2 // Configuration for the Physics Data Challenge 2006
5 // One can use the configuration macro in compiled mode by
6 // root [0] gSystem->Load("libgeant321");
7 // root [0] gSystem->SetIncludePath("-I$ROOTSYS/include -I$ALICE_ROOT/include\
8 // -I$ALICE_ROOT -I$ALICE/geant3/TGeant3");
9 // root [0] .x grun.C(1,"Config_PDC06.C++")
11 #if !defined(__CINT__) || defined(__MAKECINT__)
12 #include <Riostream.h>
16 #include <TVirtualMC.h>
17 #include <TGeant3TGeo.h>
18 #include "EVGEN/AliGenCocktail.h"
19 #include "EVGEN/AliGenParam.h"
20 #include "EVGEN/AliGenMUONlib.h"
21 #include "STEER/AliRunLoader.h"
22 #include "STEER/AliRun.h"
23 #include "STEER/AliConfig.h"
24 #include "PYTHIA6/AliDecayerPythia.h"
25 #include "PYTHIA6/AliGenPythia.h"
26 #include "STEER/AliMagFMaps.h"
27 #include "STRUCT/AliBODY.h"
28 #include "STRUCT/AliMAG.h"
29 #include "STRUCT/AliABSOv0.h"
30 #include "STRUCT/AliDIPOv2.h"
31 #include "STRUCT/AliHALL.h"
32 #include "STRUCT/AliFRAMEv2.h"
33 #include "STRUCT/AliSHILv2.h"
34 #include "STRUCT/AliPIPEv0.h"
35 #include "ITS/AliITSgeom.h"
36 #include "ITS/AliITSvPPRasymmFMD.h"
37 #include "TPC/AliTPCv2.h"
38 #include "TOF/AliTOFv5T0.h"
39 #include "RICH/AliRICHv1.h"
40 #include "ZDC/AliZDCv2.h"
41 #include "TRD/AliTRDv1.h"
42 #include "FMD/AliFMDv1.h"
43 #include "MUON/AliMUONv1.h"
44 #include "PHOS/AliPHOSv1.h"
45 #include "PMD/AliPMDv1.h"
46 #include "START/AliSTARTv1.h"
47 #include "EMCAL/AliEMCALv2.h"
48 #include "CRT/AliCRTv0.h"
49 #include "VZERO/AliVZEROv7.h"
55 //--- Heavy Flavour Production ---
56 kCharmPbPb5500, kCharmpPb8800, kCharmpp14000, kCharmpp14000wmi,
57 kD0PbPb5500, kD0pPb8800, kD0pp14000,
58 kDPlusPbPb5500, kDPluspPb8800, kDPluspp14000,
59 kBeautyPbPb5500, kBeautypPb8800, kBeautypp14000, kBeautypp14000wmi,
61 kPyMbNoHvq, kPyOmegaPlus, kPyOmegaMinus, kRunMax
64 const char * pprRunName[] = {
65 "kCharmPbPb5500", "kCharmpPb8800", "kCharmpp14000", "kCharmpp14000wmi",
66 "kD0PbPb5500", "kD0pPb8800", "kD0pp14000",
67 "kDPlusPbPb5500", "kDPluspPb8800", "kDPluspp14000",
68 "kBeautyPbPb5500", "kBeautypPb8800", "kBeautypp14000", "kBeautypp14000wmi",
69 "kPyMbNoHvq", "kPyOmegaPlus", "kPyOmegaMinus"
76 kNature, kHadr, kSemiEl, kSemiMu
78 //--- Rapidity Cut ---
81 kFull, kBarrel, kMuonArm
83 //--- Magnetic Field ---
89 AliGenPythia *PythiaHVQ(PDC06Proc_t proc);
90 AliGenerator *MbCocktail();
91 AliGenerator *PyMbTriggered(Int_t pdg);
92 void ProcessEnvironmentVars();
94 // This part for configuration
95 static PDC06Proc_t proc = kPyOmegaPlus;
96 static DecayHvFl_t decHvFl = kNature;
97 static YCut_t ycut = kFull;
98 static Mag_t mag = k5kG;
99 //========================//
100 // Set Random Number seed //
101 //========================//
103 static UInt_t seed = dt.Get();
105 // nEvts = -1 : you get 1 QQbar pair and all the fragmentation and
107 // nEvts = N>0 : you get N charm / beauty Hadrons
109 // stars = kTRUE : all heavy resonances and their decay stored
110 // = kFALSE: only final heavy hadrons and their decays stored
111 Bool_t stars = kTRUE;
113 // To be used only with kCharmppMNRwmi and kBeautyppMNRwmi
114 // To get a "reasonable" agreement with MNR results, events have to be
115 // generated with the minimum ptHard set to 2.76 GeV.
116 // To get a "perfect" agreement with MNR results, events have to be
117 // generated in four ptHard bins with the following relative
129 Float_t ptHardMin = 2.76;
130 Float_t ptHardMax = -1.;
134 static TString comment;
140 // Get settings from environment variables
141 ProcessEnvironmentVars();
143 gRandom->SetSeed(seed);
144 cerr<<"Seed for random number generation= "<<seed<<endl;
146 // libraries required by geant321
147 #if defined(__CINT__)
148 gSystem->Load("libgeant321");
151 new TGeant3TGeo("C++ Interface to Geant3");
153 //=======================================================================
154 // Create the output file
157 AliRunLoader* rl=0x0;
159 cout<<"Config.C: Creating Run Loader ..."<<endl;
160 rl = AliRunLoader::Open("galice.root",
161 AliConfig::GetDefaultEventFolderName(),
165 gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
168 rl->SetCompressionLevel(2);
169 rl->SetNumberOfEventsPerFile(1000);
170 gAlice->SetRunLoader(rl);
173 //=======================================================================
174 // ************* STEERING parameters FOR ALICE SIMULATION **************
175 // --- Specify event type to be tracked through the ALICE setup
176 // --- All positions are in cm, angles in degrees, and P and E in GeV
179 gMC->SetProcess("DCAY",1);
180 gMC->SetProcess("PAIR",1);
181 gMC->SetProcess("COMP",1);
182 gMC->SetProcess("PHOT",1);
183 gMC->SetProcess("PFIS",0);
184 gMC->SetProcess("DRAY",0);
185 gMC->SetProcess("ANNI",1);
186 gMC->SetProcess("BREM",1);
187 gMC->SetProcess("MUNU",1);
188 gMC->SetProcess("CKOV",1);
189 gMC->SetProcess("HADR",1);
190 gMC->SetProcess("LOSS",2);
191 gMC->SetProcess("MULS",1);
192 gMC->SetProcess("RAYL",1);
194 Float_t cut = 1.e-3; // 1MeV cut by default
195 Float_t tofmax = 1.e10;
197 gMC->SetCut("CUTGAM", cut);
198 gMC->SetCut("CUTELE", cut);
199 gMC->SetCut("CUTNEU", cut);
200 gMC->SetCut("CUTHAD", cut);
201 gMC->SetCut("CUTMUO", cut);
202 gMC->SetCut("BCUTE", cut);
203 gMC->SetCut("BCUTM", cut);
204 gMC->SetCut("DCUTE", cut);
205 gMC->SetCut("DCUTM", cut);
206 gMC->SetCut("PPCUTM", cut);
207 gMC->SetCut("TOFMAX", tofmax);
212 // Set External decayer //
213 //======================//
214 TVirtualMCDecayer* decayer = new AliDecayerPythia();
219 decayer->SetForceDecay(kAll);
222 decayer->SetForceDecay(kHadronicD);
225 decayer->SetForceDecay(kSemiElectronic);
228 decayer->SetForceDecay(kSemiMuonic);
232 gMC->SetExternalDecayer(decayer);
234 //=========================//
235 // Generator Configuration //
236 //=========================//
237 AliGenerator* gener = 0x0;
239 if (proc <= kBeautypp14000wmi) {
240 AliGenPythia *pythia = PythiaHVQ(proc);
242 pythia->SetFeedDownHigherFamily(kFALSE);
243 // Stack filling option
244 if(!stars) pythia->SetStackFillOpt(AliGenPythia::kParentSelection);
246 if(nEvts>0) pythia->SetCountMode(AliGenPythia::kCountParents);
252 pythia->SetForceDecay(kAll);
255 pythia->SetForceDecay(kHadronicD);
258 pythia->SetForceDecay(kSemiElectronic);
261 pythia->SetForceDecay(kSemiMuonic);
267 pythia->SetMomentumRange(0,99999999);
268 pythia->SetPhiRange(0., 360.);
269 pythia->SetThetaRange(0,180);
272 pythia->SetYRange(-999,999);
275 pythia->SetYRange(-2,2);
278 pythia->SetYRange(1,6);
282 } else if (proc == kPyMbNoHvq) {
283 gener = MbCocktail();
284 } else if (proc == kPyOmegaMinus) {
285 gener = PyMbTriggered(3334);
286 } else if (proc == kPyOmegaPlus) {
287 gener = PyMbTriggered(-3334);
294 gener->SetOrigin(0., 0., 0.); // vertex position
297 // Size of the interaction diamond
299 Float_t sigmaz = 7.55 / TMath::Sqrt(2.); // [cm]
302 Float_t betast = 10; // beta* [m]
303 Float_t eps = 3.75e-6; // emittance [m]
304 Float_t gamma = 7000. / 0.938272; // relativistic gamma [1]
305 Float_t sigmaxy = TMath::Sqrt(eps * betast / gamma) / TMath::Sqrt(2.) * 100.; // [cm]
306 printf("\n \n Diamond size x-y: %10.3e z: %10.3e\n \n", sigmaxy, sigmaz);
308 gener->SetSigma(sigmaxy, sigmaxy, sigmaz); // Sigma in (X,Y,Z) (cm) on IP position
309 gener->SetCutVertexZ(3.); // Truncate at 3 sigma
310 gener->SetVertexSmear(kPerEvent);
317 comment = comment.Append(" | L3 field 0.2 T");
318 } else if (mag == k4kG) {
319 comment = comment.Append(" | L3 field 0.4 T");
320 } else if (mag == k5kG) {
321 comment = comment.Append(" | L3 field 0.5 T");
323 printf("\n \n Comment: %s \n \n", comment.Data());
325 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 2, 1., 10., mag);
326 field->SetL3ConstField(0); //Using const. field in the barrel
328 gAlice->SetField(field);
355 //=================== Alice BODY parameters =============================
356 AliBODY *BODY = new AliBODY("BODY", "Alice envelop");
361 //=================== MAG parameters ============================
362 // --- Start with Magnet since detector layouts may be depending ---
363 // --- on the selected Magnet dimensions ---
364 AliMAG *MAG = new AliMAG("MAG", "Magnet");
370 //=================== ABSO parameters ============================
371 AliABSO *ABSO = new AliABSOv0("ABSO", "Muon Absorber");
376 //=================== DIPO parameters ============================
378 AliDIPO *DIPO = new AliDIPOv2("DIPO", "Dipole version 2");
383 //=================== HALL parameters ============================
385 AliHALL *HALL = new AliHALL("HALL", "Alice Hall");
391 //=================== FRAME parameters ============================
393 AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
398 //=================== SHIL parameters ============================
400 AliSHIL *SHIL = new AliSHILv2("SHIL", "Shielding Version 2");
406 //=================== PIPE parameters ============================
408 AliPIPE *PIPE = new AliPIPEv0("PIPE", "Beam Pipe");
413 //=================== ITS parameters ============================
415 // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
416 // almost all other detectors. This involves the fact that the ITS geometry
417 // still has several options to be followed in parallel in order to determine
418 // the best set-up which minimizes the induced background. All the geometries
419 // available to date are described in the following. Read carefully the comments
420 // and use the default version (the only one uncommented) unless you are making
421 // comparisons and you know what you are doing. In this case just uncomment the
422 // ITS geometry you want to use and run Aliroot.
424 // Detailed geometries:
427 //AliITS *ITS = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
429 //AliITS *ITS = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
431 AliITSvPPRasymmFMD *ITS = new AliITSvPPRasymmFMD("ITS","New ITS PPR detailed version with asymmetric services");
432 ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer
433 ITS->SetReadDet(kTRUE); // don't touch this parameter if you're not an ITS developer
434 // ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det"); // don't touch this parameter if you're not an ITS developer
435 ITS->SetThicknessDet1(200.); // detector thickness on layer 1 must be in the range [100,300]
436 ITS->SetThicknessDet2(200.); // detector thickness on layer 2 must be in the range [100,300]
437 ITS->SetThicknessChip1(200.); // chip thickness on layer 1 must be in the range [150,300]
438 ITS->SetThicknessChip2(200.); // chip thickness on layer 2 must be in the range [150,300]
439 ITS->SetRails(0); // 1 --> rails in ; 0 --> rails out
440 ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon
442 // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful
443 // for reconstruction !):
446 //AliITSvPPRcoarseasymm *ITS = new AliITSvPPRcoarseasymm("ITS","New ITS PPR coarse version with asymmetric services");
447 //ITS->SetRails(0); // 1 --> rails in ; 0 --> rails out
448 //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
450 //AliITS *ITS = new AliITSvPPRcoarsesymm("ITS","New ITS PPR coarse version with symmetric services");
451 //ITS->SetRails(0); // 1 --> rails in ; 0 --> rails out
452 //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
456 // Geant3 <-> EUCLID conversion
457 // ============================
459 // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and
460 // media to two ASCII files (called by default ITSgeometry.euc and
461 // ITSgeometry.tme) in a format understandable to the CAD system EUCLID.
462 // The default (=0) means that you dont want to use this facility.
469 //============================ TPC parameters =====================
470 AliTPC *TPC = new AliTPCv2("TPC", "Default");
475 //=================== TOF parameters ============================
476 AliTOF *TOF = new AliTOFv5T0("TOF", "normal TOF");
482 //=================== RICH parameters ===========================
483 AliRICH *RICH = new AliRICHv1("RICH", "normal RICH");
490 //=================== ZDC parameters ============================
492 AliZDC *ZDC = new AliZDCv2("ZDC", "normal ZDC");
497 //=================== TRD parameters ============================
499 AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
501 // Select the gas mixture (0: 97% Xe + 3% isobutane, 1: 90% Xe + 10% CO2)
504 AliTRDsim *TRDsim = TRD->CreateTR();
509 //=================== FMD parameters ============================
510 AliFMD *FMD = new AliFMDv1("FMD", "normal FMD");
515 //=================== MUON parameters ===========================
516 // New MUONv1 version (geometry defined via builders)
517 AliMUON *MUON = new AliMUONv1("MUON", "default");
519 //=================== PHOS parameters ===========================
523 AliPHOS *PHOS = new AliPHOSv1("PHOS", "IHEP");
529 //=================== PMD parameters ============================
530 AliPMD *PMD = new AliPMDv1("PMD", "normal PMD");
535 //=================== START parameters ============================
536 AliSTART *START = new AliSTARTv1("START", "START Detector");
541 //=================== EMCAL parameters ============================
542 AliEMCAL *EMCAL = new AliEMCALv2("EMCAL", "SHISH_77_TRD1_2X2_FINAL_110DEG");
547 //=================== CRT parameters ============================
548 AliCRT *CRT = new AliCRTv0("CRT", "normal ACORDE");
553 //=================== CRT parameters ============================
554 AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
560 AliGenPythia *PythiaHVQ(PDC06Proc_t proc) {
561 //*******************************************************************//
562 // Configuration file for charm / beauty generation with PYTHIA //
564 // The parameters have been tuned in order to reproduce the inclusive//
565 // heavy quark pt distribution given by the NLO pQCD calculation by //
566 // Mangano, Nason and Ridolfi. //
568 // For details and for the NORMALIZATION of the yields see: //
569 // N.Carrer and A.Dainese, //
570 // "Charm and beauty production at the LHC", //
571 // ALICE-INT-2003-019, [arXiv:hep-ph/0311225]; //
572 // PPR Chapter 6.6, CERN/LHCC 2005-030 (2005). //
573 //*******************************************************************//
574 AliGenPythia * gener = 0x0;
578 comment = comment.Append(" Charm in Pb-Pb at 5.5 TeV");
579 gener = new AliGenPythia(nEvts);
580 gener->SetProcess(kPyCharmPbPbMNR);
581 gener->SetStrucFunc(kCTEQ4L);
582 gener->SetPtHard(2.1,-1.0);
583 gener->SetEnergyCMS(5500.);
584 gener->SetNuclei(208,208);
587 comment = comment.Append(" Charm in p-Pb at 8.8 TeV");
588 gener = new AliGenPythia(nEvts);
589 gener->SetProcess(kPyCharmpPbMNR);
590 gener->SetStrucFunc(kCTEQ4L);
591 gener->SetPtHard(2.1,-1.0);
592 gener->SetEnergyCMS(8800.);
593 gener->SetProjectile("P",1,1);
594 gener->SetTarget("Pb",208,82);
597 comment = comment.Append(" Charm in pp at 14 TeV");
598 gener = new AliGenPythia(nEvts);
599 gener->SetProcess(kPyCharmppMNR);
600 gener->SetStrucFunc(kCTEQ4L);
601 gener->SetPtHard(2.1,-1.0);
602 gener->SetEnergyCMS(14000.);
604 case kCharmpp14000wmi:
605 comment = comment.Append(" Charm in pp at 14 TeV with mult. interactions");
606 gener = new AliGenPythia(-1);
607 gener->SetProcess(kPyCharmppMNRwmi);
608 gener->SetStrucFunc(kCTEQ5L);
609 gener->SetPtHard(ptHardMin,ptHardMax);
610 gener->SetEnergyCMS(14000.);
613 comment = comment.Append(" D0 in Pb-Pb at 5.5 TeV");
614 gener = new AliGenPythia(nEvts);
615 gener->SetProcess(kPyD0PbPbMNR);
616 gener->SetStrucFunc(kCTEQ4L);
617 gener->SetPtHard(2.1,-1.0);
618 gener->SetEnergyCMS(5500.);
619 gener->SetNuclei(208,208);
622 comment = comment.Append(" D0 in p-Pb at 8.8 TeV");
623 gener = new AliGenPythia(nEvts);
624 gener->SetProcess(kPyD0pPbMNR);
625 gener->SetStrucFunc(kCTEQ4L);
626 gener->SetPtHard(2.1,-1.0);
627 gener->SetEnergyCMS(8800.);
628 gener->SetProjectile("P",1,1);
629 gener->SetTarget("Pb",208,82);
632 comment = comment.Append(" D0 in pp at 14 TeV");
633 gener = new AliGenPythia(nEvts);
634 gener->SetProcess(kPyD0ppMNR);
635 gener->SetStrucFunc(kCTEQ4L);
636 gener->SetPtHard(2.1,-1.0);
637 gener->SetEnergyCMS(14000.);
640 comment = comment.Append(" DPlus in Pb-Pb at 5.5 TeV");
641 gener = new AliGenPythia(nEvts);
642 gener->SetProcess(kPyDPlusPbPbMNR);
643 gener->SetStrucFunc(kCTEQ4L);
644 gener->SetPtHard(2.1,-1.0);
645 gener->SetEnergyCMS(5500.);
646 gener->SetNuclei(208,208);
649 comment = comment.Append(" DPlus in p-Pb at 8.8 TeV");
650 gener = new AliGenPythia(nEvts);
651 gener->SetProcess(kPyDPluspPbMNR);
652 gener->SetStrucFunc(kCTEQ4L);
653 gener->SetPtHard(2.1,-1.0);
654 gener->SetEnergyCMS(8800.);
655 gener->SetProjectile("P",1,1);
656 gener->SetTarget("Pb",208,82);
659 comment = comment.Append(" DPlus in pp at 14 TeV");
660 gener = new AliGenPythia(nEvts);
661 gener->SetProcess(kPyDPlusppMNR);
662 gener->SetStrucFunc(kCTEQ4L);
663 gener->SetPtHard(2.1,-1.0);
664 gener->SetEnergyCMS(14000.);
666 case kBeautyPbPb5500:
667 comment = comment.Append(" Beauty in Pb-Pb at 5.5 TeV");
668 gener = new AliGenPythia(nEvts);
669 gener->SetProcess(kPyBeautyPbPbMNR);
670 gener->SetStrucFunc(kCTEQ4L);
671 gener->SetPtHard(2.75,-1.0);
672 gener->SetEnergyCMS(5500.);
673 gener->SetNuclei(208,208);
676 comment = comment.Append(" Beauty in p-Pb at 8.8 TeV");
677 gener = new AliGenPythia(nEvts);
678 gener->SetProcess(kPyBeautypPbMNR);
679 gener->SetStrucFunc(kCTEQ4L);
680 gener->SetPtHard(2.75,-1.0);
681 gener->SetEnergyCMS(8800.);
682 gener->SetProjectile("P",1,1);
683 gener->SetTarget("Pb",208,82);
686 comment = comment.Append(" Beauty in pp at 14 TeV");
687 gener = new AliGenPythia(nEvts);
688 gener->SetProcess(kPyBeautyppMNR);
689 gener->SetStrucFunc(kCTEQ4L);
690 gener->SetPtHard(2.75,-1.0);
691 gener->SetEnergyCMS(14000.);
693 case kBeautypp14000wmi:
694 comment = comment.Append(" Beauty in pp at 14 TeV with mult. interactions");
695 gener = new AliGenPythia(-1);
696 gener->SetProcess(kPyBeautyppMNRwmi);
697 gener->SetStrucFunc(kCTEQ5L);
698 gener->SetPtHard(ptHardMin,ptHardMax);
699 gener->SetEnergyCMS(14000.);
706 AliGenerator* MbCocktail()
708 comment = comment.Append(" pp at 14 TeV: Pythia low-pt, no heavy quarks + J/Psi from parameterisation");
709 AliGenCocktail * gener = new AliGenCocktail();
710 gener->UsePerEventRates();
714 AliGenPythia* pythia = new AliGenPythia(-1);
715 pythia->SetMomentumRange(0, 999999.);
716 pythia->SetThetaRange(0., 180.);
717 pythia->SetYRange(-12.,12.);
718 pythia->SetPtRange(0,1000.);
719 pythia->SetProcess(kPyMb);
720 pythia->SetEnergyCMS(14000.);
721 pythia->SwitchHFOff();
724 // J/Psi parameterisation
726 AliGenParam* jpsi = new AliGenParam(1, AliGenMUONlib::kJpsi, "CDF scaled", "Jpsi");
727 jpsi->SetPtRange(0.,100.);
728 jpsi->SetYRange(-8., 8.);
729 jpsi->SetPhiRange(0., 360.);
730 jpsi->SetForceDecay(kAll);
733 gener->AddGenerator(pythia, "Pythia", 1.);
734 gener->AddGenerator(jpsi, "J/Psi", 8.e-4);
739 AliGenerator* PyMbTriggered(Int_t pdg)
741 AliGenPythia* pythia = new AliGenPythia(-1);
742 pythia->SetMomentumRange(0, 999999.);
743 pythia->SetThetaRange(0., 180.);
744 pythia->SetYRange(-12.,12.);
745 pythia->SetPtRange(0,1000.);
746 pythia->SetProcess(kPyMb);
747 pythia->SetEnergyCMS(14000.);
748 pythia->SetTriggerParticle(pdg, 0.9);
752 void ProcessEnvironmentVars()
755 if (gSystem->Getenv("CONFIG_RUN_TYPE")) {
756 for (Int_t iRun = 0; iRun < kRunMax; iRun++) {
757 if (strcmp(gSystem->Getenv("CONFIG_RUN_TYPE"), pprRunName[iRun])==0) {
758 proc = (PDC06Proc_t)iRun;
759 cout<<"Run type set to "<<pprRunName[iRun]<<endl;
764 // Random Number seed
765 if (gSystem->Getenv("CONFIG_SEED")) {
766 seed = atoi(gSystem->Getenv("CONFIG_SEED"));