1 //*******************************************************************//
2 // Configuration file for charm / beauty generation with PYTHIA //
4 // The parameters have been tuned in order to reproduce the inclusive//
5 // heavy quark pt distribution given by the NLO pQCD calculation by //
6 // Mangano, Nason and Ridolfi. //
8 // For details and for the NORMALIZATION of the yields see: //
9 // N.Carrer and A.Dainese, //
10 // "Charm and beauty production at the LHC", //
11 // ALICE-INT-2003-019, [arXiv:hep-ph/0311225]; //
12 // PPR Chapter 6.6, CERN/LHCC 2005-030 (2005). //
13 //*******************************************************************//
14 #if !defined(__CINT__) || defined(__MAKECINT__)
15 #include <Riostream.h>
19 #include <TVirtualMC.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/AliITSvPPRasymmFMD.h"
36 #include "TPC/AliTPCv2.h"
37 #include "TOF/AliTOFv5T0.h"
38 #include "RICH/AliRICHv1.h"
39 #include "ZDC/AliZDCv1.h"
40 #include "TRD/AliTRDv1.h"
41 #include "FMD/AliFMDv0.h"
42 #include "MUON/AliMUONv1.h"
43 #include "PHOS/AliPHOSv1.h"
44 #include "PMD/AliPMDv1.h"
45 #include "START/AliSTARTv1.h"
46 #include "CRT/AliCRTv1.h"
49 //--- Heavy Flavour Production ---
52 kCharmPbPb5500, kCharmpPb8800, kCharmpp14000, kCharmpp14000wmi,
53 kD0PbPb5500, kD0pPb8800, kD0pp14000,
54 kDPlusPbPb5500, kDPluspPb8800, kDPluspp14000,
55 kBeautyPbPb5500, kBeautypPb8800, kBeautypp14000, kBeautypp14000wmi
60 kNature, kHadr, kSemiEl, kSemiMu
62 //--- Rapidity Cut ---
65 kFull, kBarrel, kMuonArm
67 //--- Magnetic Field ---
73 AliGenPythia *PythiaHVQ(ProcessHvFl_t proc);
76 // This part for configuration
77 static ProcessHvFl_t procHvFl = kCharmPbPb5500;
78 static DecayHvFl_t decHvFl = kNature;
79 static YCut_t ycut = kFull;
80 static Mag_t mag = k5kG;
81 // nEvts = -1 : you get 1 QQbar pair and all the fragmentation and
83 // nEvts = N>0 : you get N charm / beauty Hadrons
85 // stars = kTRUE : all heavy resonances and their decay stored
86 // = kFALSE: only final heavy hadrons and their decays stored
89 // To be used only with kCharmppMNRwmi and kBeautyppMNRwmi
90 // To get a "reasonable" agreement with MNR results, events have to be
91 // generated with the minimum ptHard set to 2.76 GeV.
92 // To get a "perfect" agreement with MNR results, events have to be
93 // generated in four ptHard bins with the following relative
105 Float_t ptHardMin = 2.76;
106 Float_t ptHardMax = -1.;
110 static TString comment;
115 //========================//
116 // Set Random Number seed //
117 //========================//
119 UInt_t curtime=dt.Get();
120 UInt_t procid=gSystem->GetPid();
121 UInt_t seed=curtime-procid;
123 // gRandom->SetSeed(seed);
124 // cerr<<"Seed for random number generation= "<<seed<<endl;
125 gRandom->SetSeed(12345);
128 // libraries required by geant321
129 #if defined(__CINT__)
130 gSystem->Load("libgeant321");
133 new TGeant3TGeo("C++ Interface to Geant3");
135 //=======================================================================
136 // Create the output file
139 AliRunLoader* rl=0x0;
141 cout<<"Config.C: Creating Run Loader ..."<<endl;
142 rl = AliRunLoader::Open("galice.root",
143 AliConfig::GetDefaultEventFolderName(),
147 gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
150 rl->SetCompressionLevel(2);
151 rl->SetNumberOfEventsPerFile(3);
152 gAlice->SetRunLoader(rl);
155 //=======================================================================
156 // ************* STEERING parameters FOR ALICE SIMULATION **************
157 // --- Specify event type to be tracked through the ALICE setup
158 // --- All positions are in cm, angles in degrees, and P and E in GeV
161 gMC->SetProcess("DCAY",1);
162 gMC->SetProcess("PAIR",1);
163 gMC->SetProcess("COMP",1);
164 gMC->SetProcess("PHOT",1);
165 gMC->SetProcess("PFIS",0);
166 gMC->SetProcess("DRAY",0);
167 gMC->SetProcess("ANNI",1);
168 gMC->SetProcess("BREM",1);
169 gMC->SetProcess("MUNU",1);
170 gMC->SetProcess("CKOV",1);
171 gMC->SetProcess("HADR",1);
172 gMC->SetProcess("LOSS",2);
173 gMC->SetProcess("MULS",1);
174 gMC->SetProcess("RAYL",1);
176 Float_t cut = 1.e-3; // 1MeV cut by default
177 Float_t tofmax = 1.e10;
179 gMC->SetCut("CUTGAM", cut);
180 gMC->SetCut("CUTELE", cut);
181 gMC->SetCut("CUTNEU", cut);
182 gMC->SetCut("CUTHAD", cut);
183 gMC->SetCut("CUTMUO", cut);
184 gMC->SetCut("BCUTE", cut);
185 gMC->SetCut("BCUTM", cut);
186 gMC->SetCut("DCUTE", cut);
187 gMC->SetCut("DCUTM", cut);
188 gMC->SetCut("PPCUTM", cut);
189 gMC->SetCut("TOFMAX", tofmax);
194 // Set External decayer //
195 //======================//
196 TVirtualMCDecayer* decayer = new AliDecayerPythia();
201 decayer->SetForceDecay(kAll);
204 decayer->SetForceDecay(kHadronicD);
207 decayer->SetForceDecay(kSemiElectronic);
210 decayer->SetForceDecay(kSemiMuonic);
214 gMC->SetExternalDecayer(decayer);
216 //=========================//
217 // Generator Configuration //
218 //=========================//
219 AliGenPythia *pythia = PythiaHVQ(procHvFl);
221 pythia->SetFeedDownHigherFamily(kFALSE);
222 // Stack filling option
223 if(!stars) pythia->SetStackFillOpt(AliGenPythia::kParentSelection);
225 if(nEvts>0) pythia->SetCountMode(AliGenPythia::kCountParents);
230 pythia->SetForceDecay(kAll);
233 pythia->SetForceDecay(kHadronicD);
236 pythia->SetForceDecay(kSemiElectronic);
239 pythia->SetForceDecay(kSemiMuonic);
244 pythia->SetMomentumRange(0,99999999);
245 pythia->SetPhiRange(0., 360.);
246 pythia->SetThetaRange(0,180);
249 pythia->SetYRange(-999,999);
252 pythia->SetYRange(-2,2);
255 pythia->SetYRange(1,6);
261 pythia->SetOrigin(0, 0, 0); // vertex position
262 pythia->SetSigma(0, 0, 5.3); // Sigma in (X,Y,Z) (cm) on IP position
263 pythia->SetCutVertexZ(1.); // Truncate at 1 sigma
264 pythia->SetVertexSmear(kPerEvent);
268 pythia->SetTrackingFlag(0);
269 // Specify GEANT tracking limits (Rmax, Zmax)
270 //gAlice->GetMCApp()->TrackingLimits(90.,1.0e10);
278 comment = comment.Append(" | L3 field 0.2 T");
279 } else if (mag == k4kG) {
280 comment = comment.Append(" | L3 field 0.4 T");
281 } else if (mag == k5kG) {
282 comment = comment.Append(" | L3 field 0.5 T");
284 printf("\n \n Comment: %s \n \n", comment.Data());
286 AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 2, 1., 10., mag);
287 field->SetL3ConstField(0); //Using const. field in the barrel
289 gAlice->SetField(field);
292 // By default all ALICE is switched off
313 //=================== Alice BODY parameters =============================
314 AliBODY *BODY = new AliBODY("BODY","Alice envelop");
317 //=================== MAG parameters ============================
318 // --- Start with Magnet since detector layouts may be depending ---
319 // --- on the selected Magnet dimensions ---
320 AliMAG *MAG = new AliMAG("MAG","Magnet");
325 //=================== ABSO parameters ============================
326 AliABSO *ABSO = new AliABSOv0("ABSO","Muon Absorber");
330 //=================== DIPO parameters ============================
332 AliDIPO *DIPO = new AliDIPOv2("DIPO","Dipole version 2");
336 //=================== HALL parameters ============================
338 AliHALL *HALL = new AliHALL("HALL","Alice Hall");
343 //=================== FRAME parameters ============================
345 AliFRAME *FRAME = new AliFRAMEv2("FRAME","Space Frame");
350 //=================== SHIL parameters ============================
352 AliSHIL *SHIL = new AliSHILv2("SHIL","Shielding");
357 //=================== PIPE parameters ============================
359 AliPIPE *PIPE = new AliPIPEv0("PIPE","Beam Pipe");
365 //=================== ITS parameters ============================
367 // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
368 // almost all other detectors. This involves the fact that the ITS geometry
369 // still has several options to be followed in parallel in order to determine
370 // the best set-up which minimizes the induced background. All the geometries
371 // available to date are described in the following. Read carefully the comments
372 // and use the default version (the only one uncommented) unless you are making
373 // comparisons and you know what you are doing. In this case just uncomment the
374 // ITS geometry you want to use and run Aliroot.
376 // Detailed geometries:
379 //AliITS *ITS = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
381 //AliITS *ITS = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
383 AliITSvPPRasymmFMD *ITS = new AliITSvPPRasymmFMD("ITS","New ITS PPR detailed version with asymmetric services");
384 ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer
385 ITS->SetReadDet(kFALSE); // don't touch this parameter if you're not an ITS developer
386 ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det"); // don't touch this parameter if you're not an ITS developer
387 ITS->SetThicknessDet1(200.); // detector thickness on layer 1 must be in the range [150,300]
388 ITS->SetThicknessDet2(200.); // detector thickness on layer 2 must be in the range [150,300]
389 ITS->SetThicknessChip1(200.); // chip thickness on layer 1 must be in the range [100,300]
390 ITS->SetThicknessChip2(200.); // chip thickness on layer 2 must be in the range [100,300]
391 ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
392 ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon
394 //AliITSvPPRsymm *ITS = new AliITSvPPRsymm("ITS","New ITS PPR detailed version with symmetric services");
395 //ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer
396 //ITS->SetReadDet(kFALSE); // don't touch this parameter if you're not an ITS developer
397 //ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRsymm2.det"); // don't touch this parameter if you're not an ITS developer
398 //ITS->SetThicknessDet1(300.); // detector thickness on layer 1 must be in the range [150,300]
399 //ITS->SetThicknessDet2(300.); // detector thickness on layer 2 must be in the range [150,300]
400 //ITS->SetThicknessChip1(300.); // chip thickness on layer 1 must be in the range [100,300]
401 //ITS->SetThicknessChip2(300.); // chip thickness on layer 2 must be in the range [100,300]
402 //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
403 //ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon
406 // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful
407 // for reconstruction !):
410 //AliITSvPPRcoarseasymm *ITS = new AliITSvPPRcoarseasymm("ITS","New ITS PPR coarse version with asymmetric services");
411 //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
412 //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
414 //AliITS *ITS = new AliITSvPPRcoarsesymm("ITS","New ITS PPR coarse version with symmetric services");
415 //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out
416 //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon
420 // Geant3 <-> EUCLID conversion
421 // ============================
423 // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and
424 // media to two ASCII files (called by default ITSgeometry.euc and
425 // ITSgeometry.tme) in a format understandable to the CAD system EUCLID.
426 // The default (=0) means that you dont want to use this facility.
433 //============================ TPC parameters ===================
434 AliTPC *TPC = new AliTPCv2("TPC","Default");
439 //=================== TOF parameters ============================
440 AliTOF *TOF = new AliTOFv5T0("TOF","normal TOF");
444 //=================== RICH parameters ===========================
445 AliRICH *RICH = new AliRICHv1("RICH","normal RICH");
451 //=================== ZDC parameters ============================
453 AliZDC *ZDC = new AliZDCv1("ZDC","normal ZDC");
457 //=================== CRT parameters ============================
459 AliCRT *CRT = new AliCRTv1("CRT","normal CRT");
463 //=================== TRD parameters ============================
465 AliTRD *TRD = new AliTRDv1("TRD","TRD slow simulator");
467 // Select the gas mixture (0: 97% Xe + 3% isobutane, 1: 90% Xe + 10% CO2)
470 // With hole in front of PHOS
472 // With hole in front of RICH
475 AliTRDsim *TRDsim = TRD->CreateTR();
479 //=================== FMD parameters ============================
481 AliFMD *FMD = new AliFMDv0("FMD","normal FMD");
485 //=================== MUON parameters ===========================
486 AliMUON *MUON = new AliMUONv1("MUON","default");
489 //=================== PHOS parameters ===========================
492 AliPHOS *PHOS = new AliPHOSv1("PHOS","GPS2");
496 //=================== CRT parameters ===========================
499 AliCRT *CRT = new AliCRTv1("CRT","Normal CRTGPS2");
504 //=================== PMD parameters ============================
506 AliPMD *PMD = new AliPMDv1("PMD","normal PMD");
507 PMD->SetPAR(1., 1., 0.8, 0.02);
508 PMD->SetIN(6., 18., -580., 27., 27.);
509 PMD->SetGEO(0.0, 0.2, 4.);
510 PMD->SetPadSize(0.8, 1.0, 1.0, 1.5);
515 //=================== START parameters ============================
516 AliSTART *START = new AliSTARTv1("START","START Detector");
524 AliGenPythia *PythiaHVQ(ProcessHvFl_t proc) {
526 AliGenPythia * gener = 0x0;
530 comment = comment.Append(" Charm in Pb-Pb at 5.5 TeV");
531 gener = new AliGenPythia(nEvts);
532 gener->SetProcess(kPyCharmPbPbMNR);
533 gener->SetStrucFunc(kCTEQ4L);
534 gener->SetPtHard(2.1,-1.0);
535 gener->SetEnergyCMS(5500.);
536 gener->SetNuclei(208,208);
539 comment = comment.Append(" Charm in p-Pb at 8.8 TeV");
540 gener = new AliGenPythia(nEvts);
541 gener->SetProcess(kPyCharmpPbMNR);
542 gener->SetStrucFunc(kCTEQ4L);
543 gener->SetPtHard(2.1,-1.0);
544 gener->SetEnergyCMS(8800.);
545 gener->SetProjectile("P",1,1);
546 gener->SetTarget("Pb",208,82);
549 comment = comment.Append(" Charm in pp at 14 TeV");
550 gener = new AliGenPythia(nEvts);
551 gener->SetProcess(kPyCharmppMNR);
552 gener->SetStrucFunc(kCTEQ4L);
553 gener->SetPtHard(2.1,-1.0);
554 gener->SetEnergyCMS(14000.);
556 case kCharmpp14000wmi:
557 comment = comment.Append(" Charm in pp at 14 TeV with mult. interactions");
558 gener = new AliGenPythia(-1);
559 gener->SetProcess(kPyCharmppMNRwmi);
560 gener->SetStrucFunc(kCTEQ5L);
561 gener->SetPtHard(ptHardMin,ptHardMax);
562 gener->SetEnergyCMS(14000.);
565 comment = comment.Append(" D0 in Pb-Pb at 5.5 TeV");
566 gener = new AliGenPythia(nEvts);
567 gener->SetProcess(kPyD0PbPbMNR);
568 gener->SetStrucFunc(kCTEQ4L);
569 gener->SetPtHard(2.1,-1.0);
570 gener->SetEnergyCMS(5500.);
571 gener->SetNuclei(208,208);
574 comment = comment.Append(" D0 in p-Pb at 8.8 TeV");
575 gener = new AliGenPythia(nEvts);
576 gener->SetProcess(kPyD0pPbMNR);
577 gener->SetStrucFunc(kCTEQ4L);
578 gener->SetPtHard(2.1,-1.0);
579 gener->SetEnergyCMS(8800.);
580 gener->SetProjectile("P",1,1);
581 gener->SetTarget("Pb",208,82);
584 comment = comment.Append(" D0 in pp at 14 TeV");
585 gener = new AliGenPythia(nEvts);
586 gener->SetProcess(kPyD0ppMNR);
587 gener->SetStrucFunc(kCTEQ4L);
588 gener->SetPtHard(2.1,-1.0);
589 gener->SetEnergyCMS(14000.);
592 comment = comment.Append(" DPlus in Pb-Pb at 5.5 TeV");
593 gener = new AliGenPythia(nEvts);
594 gener->SetProcess(kPyDPlusPbPbMNR);
595 gener->SetStrucFunc(kCTEQ4L);
596 gener->SetPtHard(2.1,-1.0);
597 gener->SetEnergyCMS(5500.);
598 gener->SetNuclei(208,208);
601 comment = comment.Append(" DPlus in p-Pb at 8.8 TeV");
602 gener = new AliGenPythia(nEvts);
603 gener->SetProcess(kPyDPluspPbMNR);
604 gener->SetStrucFunc(kCTEQ4L);
605 gener->SetPtHard(2.1,-1.0);
606 gener->SetEnergyCMS(8800.);
607 gener->SetProjectile("P",1,1);
608 gener->SetTarget("Pb",208,82);
611 comment = comment.Append(" DPlus in pp at 14 TeV");
612 gener = new AliGenPythia(nEvts);
613 gener->SetProcess(kPyDPlusppMNR);
614 gener->SetStrucFunc(kCTEQ4L);
615 gener->SetPtHard(2.1,-1.0);
616 gener->SetEnergyCMS(14000.);
618 case kBeautyPbPb5500:
619 comment = comment.Append(" Beauty in Pb-Pb at 5.5 TeV");
620 gener = new AliGenPythia(nEvts);
621 gener->SetProcess(kPyBeautyPbPbMNR);
622 gener->SetStrucFunc(kCTEQ4L);
623 gener->SetPtHard(2.75,-1.0);
624 gener->SetEnergyCMS(5500.);
625 gener->SetNuclei(208,208);
628 comment = comment.Append(" Beauty in p-Pb at 8.8 TeV");
629 gener = new AliGenPythia(nEvts);
630 gener->SetProcess(kPyBeautypPbMNR);
631 gener->SetStrucFunc(kCTEQ4L);
632 gener->SetPtHard(2.75,-1.0);
633 gener->SetEnergyCMS(8800.);
634 gener->SetProjectile("P",1,1);
635 gener->SetTarget("Pb",208,82);
638 comment = comment.Append(" Beauty in pp at 14 TeV");
639 gener = new AliGenPythia(nEvts);
640 gener->SetProcess(kPyBeautyppMNR);
641 gener->SetStrucFunc(kCTEQ4L);
642 gener->SetPtHard(2.75,-1.0);
643 gener->SetEnergyCMS(14000.);
645 case kBeautypp14000wmi:
646 comment = comment.Append(" Beauty in pp at 14 TeV with mult. interactions");
647 gener = new AliGenPythia(-1);
648 gener->SetProcess(kPyBeautyppMNRwmi);
649 gener->SetStrucFunc(kCTEQ5L);
650 gener->SetPtHard(ptHardMin,ptHardMax);
651 gener->SetEnergyCMS(14000.);