1 /////////////////////////////////////////////////////////////////////////////
2 // TUHKM is an interface to
4 // ( only the HYDJET++ part is implemented) //
6 // http://lav01.sinp.msu.ru/~igor/hydjet++/hydjet++.txt //
7 // The main UHKM options are accessable through this interface. //
8 // Uses the TUHKMgen implementation of TGenerator. //
9 // Author of the first implementation: Sergey Zaporozhets //
10 // (zaporozh@sunhe.jinr.ru) //
11 // Futhers modifications were made by //
12 // Ionut Cristian Arsene (i.c.arsene@fys.uio.no) //
13 // & Malinina Liudmila(malinina@lav01.sinp.msu.ru) using as an example //
14 // AliGenTherminator.cxx created by Adam Kisiel //
16 ////////////////////////////////////////////////////////////////////////////
21 #include "TObjArray.h"
22 #include "TParticle.h"
26 #include "TClonesArray.h"
37 TUHKMgen::TUHKMgen() :
38 TGenerator("UHKM","UHKM"),
45 // default constructor setting reasonable defaults for initial parameters (central Pb+Pb at 5.5 TeV)
47 ParticleAllocator fAllocator;
48 List_t fSecondariesList;
50 // Set reasonable default values for LHC
52 fHydjetParams.fSqrtS=5500; //LHC
53 fHydjetParams.fAw=207;//Au-Au
54 fHydjetParams.fIfb = 1; // flag of type of centrality generation (=0 is fixed by fBfix, not 0
55 //impact parameter is generated in each event between fBfmin
56 //and fBmax according with Glauber model (f-la 30)
57 fHydjetParams.fBfix=0.;
58 fHydjetParams.fBmin=0.;
59 fHydjetParams.fBmax=0.5; //0-5% centrality
60 fHydjetParams.fT = 0.170;
61 fHydjetParams.fMuB = 0.0;
62 fHydjetParams.fMuS = 0.0;
63 fHydjetParams.fMuI3 = 0.0;
64 fHydjetParams.fThFO = 0.130;
65 fHydjetParams.fMu_th_pip = 0.0;
66 fHydjetParams.fSeed=0;
67 fHydjetParams.fTau=10.;
68 fHydjetParams.fSigmaTau=3.;
70 fHydjetParams.fYlmax=4.0;
71 fHydjetParams.fUmax=1.1;
72 fHydjetParams.fDelta=0.;
73 fHydjetParams.fEpsilon=0.;
74 fHydjetParams.fWeakDecay=0; //>=0 on ,-1 off
75 fHydjetParams.fEtaType=1;//gaus
76 fHydjetParams.fCorrS=1.;
77 fHydjetParams.fNhsel=2;
78 fHydjetParams.fIshad=1;
79 fHydjetParams.fPtmin=7.0;
80 fHydjetParams.fT0=0.8;
81 fHydjetParams.fTau0=0.1;
83 fHydjetParams.fIenglu=0;
84 fHydjetParams.fIanglu=0;
87 // Set reasonable default values for RHIC
89 fHydjetParams.fSqrtS=200; //RHIC
90 fHydjetParams.fAw=197;//Au-Au
91 fHydjetParams.fIfb = 1;
92 fHydjetParams.fBfix=0.;
93 fHydjetParams.fBmin=0.;
94 fHydjetParams.fBmax=0.5; //0-5% centrality
95 fHydjetParams.fT = 0.165;
96 fHydjetParams.fMuB = 0.0285;
97 fHydjetParams.fMuS = 0.007;
98 fHydjetParams.fMuI3 = -0.001;
99 fHydjetParams.fThFO = 0.100;
100 fHydjetParams.fMu_th_pip = 0.053;
101 fHydjetParams.fSeed=0;
102 fHydjetParams.fTau=8.;
103 fHydjetParams.fSigmaTau=2.;
104 fHydjetParams.fR=10.;
105 fHydjetParams.fYlmax=3.3;
106 fHydjetParams.fUmax=1.1;
107 fHydjetParams.fDelta=0.;
108 fHydjetParams.fEpsilon=0.;
109 fHydjetParams.fWeakDecay=0;//>=0 on ,-1 off
110 fHydjetParams.fEtaType=1;//gaus
111 fHydjetParams.fCorrS=1.;
112 fHydjetParams.fNhsel=2;
113 fHydjetParams.fIshad=1;
114 fHydjetParams.fPtmin=3.4;
115 fHydjetParams.fT0=0.3;
116 fHydjetParams.fTau0=0.4;
118 fHydjetParams.fIenglu=0;
119 fHydjetParams.fIanglu=0;
122 strcpy(fParticleFilename, Form("%s/TUHKMgen/UHKM/particles.data", gSystem->Getenv("ALICE_ROOT")));
123 strcpy(fDecayFilename, Form("%s/TUHKMgen/UHKM/tabledecay.txt", gSystem->Getenv("ALICE_ROOT")));
124 for(Int_t i=0; i<500; i++) {
125 fStableFlagPDG[i] = 0;
126 fStableFlagStatus[i] = kFALSE;
129 // cout << "TUHKMgen::TUHKMgen() OUT" << endl;
132 //______________________________________________________________________________
133 TUHKMgen::~TUHKMgen()
135 // destructor, deletes the InitialStateHydjet object
137 delete fInitialState;
140 void TUHKMgen::SetAllParametersRHIC()
142 // Set reasonable input parameters for 0-5% central Au+Au collisions
143 // at 200 GeV at RHIC
144 SetEcms(200.0); // RHIC top energy
150 SetChFrzTemperature(0.165); // T_ch = 165 MeV
151 SetMuB(0.0285); // mu_B = 28.5 MeV
152 SetMuS(0.007); // mu_S = 7 MeV
153 SetMuQ(-0.001); // mu_Q = -1 MeV
154 SetThFrzTemperature(0.100); // T_th = 100 MeV
155 SetMuPionThermal(0.053); // mu_th_pion = 53 MeV
156 SetSeed(0); // use UNIX time
157 SetTauB(8.0); // tau = 8 fm/c
158 SetSigmaTau(2.0); // sigma_tau = 2 fm/c
159 SetRmaxB(10.0); // fR = 10 fm
160 SetYlMax(3.3); // fYmax = 3.3
161 SetEtaRMax(1.1); // Umax = 1.1
162 SetMomAsymmPar(0.0); // delta = 0.0
163 SetCoordAsymmPar(0.0); // epsilon = 0.0
164 SetFlagWeakDecay(0.0); // weak decay on (<0 off !!!)
165 SetEtaType(1); // gaus distributed with fYmax dispersion (0 means boost invariant)
166 SetGammaS(1.0); // gammaS = 1.0 (no strangeness canonical suppresion)
167 SetPyquenNhsel(2); // hydro on, jets on, jet quenching on
168 SetPyquenShad(1); // shadowing on (0 off)
169 SetPyquenPtmin(3.4); // ptmin = 3.4 GeV/c
170 SetPyquenT0(0.3); // T0 = 300 MeV
171 SetPyquenTau0(0.4); // tau0 = 0.4 fm/c
172 SetPyquenNf(2); // 2 flavours
173 SetPyquenIenglu(0); // radiative and collisional energy loss
174 SetPyquenIanglu(0); // small gluon angular distribution
177 void TUHKMgen::SetAllParametersLHC()
179 // Set reasonable input parameters for 0-5% Pb+Pb collisions at 5.5 TeV at LHC
180 SetEcms(5500.0); // LHC
186 SetChFrzTemperature(0.170); // T_ch = 170 MeV
187 SetMuB(0.0); // mu_B = 0 MeV
188 SetMuS(0.0); // mu_S = 0 MeV
189 SetMuQ(0.0); // mu_Q = 0 MeV
190 SetThFrzTemperature(0.130); // T_th = 130 MeV
191 SetMuPionThermal(0.0); // mu_th_pion = 0 MeV
192 SetSeed(0); // use UNIX time
193 SetTauB(10.0); // tau = 10 fm/c
194 SetSigmaTau(3.0); // sigma_tau = 3 fm/c
195 SetRmaxB(11.0); // fR = 11 fm
196 SetYlMax(4.0); // fYmax = 4.0
197 SetEtaRMax(1.1); // Umax = 1.1
198 SetMomAsymmPar(0.0); // delta = 0.0
199 SetCoordAsymmPar(0.0); // epsilon = 0.0
200 SetFlagWeakDecay(0); // weak decay on (<0 off !!!)
201 SetEtaType(1); // gaus distributed with fYmax dispersion (0 means boost invariant)
202 SetGammaS(1.0); // gammaS = 1.0 (no strangeness canonical suppresion)
203 SetPyquenNhsel(2); // hydro on, jets on, jet quenching on
204 SetPyquenShad(1); // shadowing on (0 off)
205 SetPyquenPtmin(7.0); // ptmin = 7.0 GeV/c
206 SetPyquenT0(0.8); // T0 = 800 MeV
207 SetPyquenTau0(0.1); // tau0 = 0.4 fm/c
208 SetPyquenNf(0); // 0 flavours
209 SetPyquenIenglu(0); // radiative and collisional energy loss
210 SetPyquenIanglu(0); // small gluon angular distribution
213 TObjArray* TUHKMgen::ImportParticles(const Option_t *)
215 // Function overloading the TGenerator::ImportParticles() member function.
216 // The particles from the local particle list (fSecondariesList) are
217 // forwarded to the TGenerator::fParticles
222 for(it = fSecondariesList.begin(), e = fSecondariesList.end(); it != e; it++) {
223 TVector3 pos(it->Pos().Vect());
224 TVector3 mom(it->Mom().Vect());
225 Float_t m1 = it->TableMass();
226 Int_t im1 = it->GetMother();
231 Int_t type = it->GetType(); // 0-hydro, 1-jets
234 TParticle *mother = (TParticle*) (fParticles->UncheckedAt(im1+1));
235 mother->SetLastDaughter(nump);
236 if (mother->GetFirstDaughter()==-1)
237 mother->SetFirstDaughter(nump+1);
242 TParticle* p = new TParticle(it->Encoding(), type, //pdg,stat
243 im1, im2, id1, id2, //m1,m2,d1,d2
244 mom[0], mom[1], mom[2], TMath::Sqrt(mom.Mag2() + m1 * m1), //px,py,pz,e
245 pos[0]*1.e-13, pos[1]*1.e-13, pos[2]*1.e-13,
246 it->T()*1.e-13/3e10); //x,y,z,t
248 p->SetUniqueID(nump);
252 fAllocator.FreeList(fSecondariesList);
257 Int_t TUHKMgen::ImportParticles(TClonesArray *particles, const Option_t* option)
259 // Function overloading the TGenerator::ImportParticles() member function.
260 // The particles from the local particle list (fSecondariesList) are
261 // forwarded to the TGenerator::fParticles
265 if(particles==0) return 0;
266 TClonesArray &particlesR=*particles;
269 Int_t numprim,numsec; numprim=numsec=0;
273 for(it = fSecondariesList.begin(), e = fSecondariesList.end(); it != e; it++) {
274 TVector3 pos(it->Pos().Vect());
275 TVector3 mom(it->Mom().Vect());
276 Float_t m1 = it->TableMass();
277 Int_t im1 = it->GetMother();
282 Int_t type = it->GetType();
285 // particle not a primary -> set the daughter indexes for the mother particle"<< endl;
286 TParticle *mother = (TParticle*) (particlesR.UncheckedAt(im1));
287 mother->SetLastDaughter(nump);
288 if(mother->GetFirstDaughter()==-1)
289 mother->SetFirstDaughter(nump);
293 new (particlesR[nump]) TParticle(it->Encoding(), type, //pdg,stat
294 im1, im2, id1, id2, //m1,m2,d1,d2
295 mom[0], mom[1], mom[2], TMath::Sqrt(mom.Mag2() + m1 * m1), //px,py,pz,e
296 pos[0]*1.e-13, pos[1]*1.e-13, pos[2]*1.e-13,
297 it->T()*1.e-13/3e10); //x,y,z,t
299 particlesR[nump]->SetUniqueID(nump);
304 fSecondariesList.clear();
305 printf("Scan and add prim %d sec %d and all %d particles\n",
306 numprim,numsec,nump);
310 //______________________________________________________________________________
311 void TUHKMgen::Initialize()
313 // Function overloading the TGenerator::Initialize() member function.
314 // The Monte-Carlo model is initialized (input parameters are transmitted,
315 // particle list and decay channels are loaded, average multiplicities are calculated, etc.)
317 fInitialState = new InitialStateHydjet();
319 fInitialState->LoadPDGInfo();
320 // set the stable flags
321 for(Int_t i=0; i<fStableFlagged; i++)
322 fInitialState->SetPDGParticleStable(fStableFlagPDG[i], fStableFlagStatus[i]);
324 if(!fInitialState->MultIni())
325 Error("TUHKMgen::Initialize()", "Bad status return from MultIni(). Check it out!! \n"); //
328 void TUHKMgen::Print(const Option_t*) const
330 cout << "TUHKMgen::Print() method not implemented yet!!" << endl;
333 void TUHKMgen::GenerateEvent()
335 // Member function overloading the TGenerator::GenerateEvent()
336 // The HYDJET++ model is run and the particle lists (fSourceList and fSecondariesList) are filled
338 fInitialState->Initialize(fSecondariesList, fAllocator);
340 if(fSecondariesList.empty())Error("TUHKMgen::GenerateEvent()", "Source particle list empty after fireball initialization!! \n"); //
344 if(fInitialState->RunDecays())
345 fInitialState->Evolve(fSecondariesList, fAllocator, fInitialState->GetWeakDecayLimit());
349 void TUHKMgen::SetAllParameters() {
350 // forward all model input parameters to the InitialStateHydjet object
351 // which will handle all the Monte-Carlo simulation using HYDJET++ model
353 fInitialState->fParams.fSqrtS = fHydjetParams.fSqrtS;
354 fInitialState->fParams.fAw = fHydjetParams.fAw;
355 fInitialState->fParams.fIfb = fHydjetParams.fIfb ;
356 fInitialState->fParams.fBfix = fHydjetParams.fBfix;
357 fInitialState->fParams.fBmin = fHydjetParams.fBmin;
358 fInitialState->fParams.fBmax = fHydjetParams.fBmax;
359 fInitialState->fParams.fSeed = fHydjetParams.fSeed;
360 fInitialState->fParams.fT = fHydjetParams.fT;
361 fInitialState->fParams.fMuB = fHydjetParams.fMuB;
362 fInitialState->fParams.fMuS = fHydjetParams.fMuS;
363 fInitialState->fParams.fMuI3 = fHydjetParams.fMuI3;
364 fInitialState->fParams.fThFO = fHydjetParams.fThFO;
365 fInitialState->fParams.fMu_th_pip = fHydjetParams.fMu_th_pip;
367 fInitialState->fParams.fTau = fHydjetParams.fTau;
368 fInitialState->fParams.fSigmaTau = fHydjetParams.fSigmaTau;
369 fInitialState->fParams.fR = fHydjetParams.fR;
370 fInitialState->fParams.fYlmax = fHydjetParams.fYlmax;
371 fInitialState->fParams.fUmax = fHydjetParams.fUmax;
372 fInitialState->fParams.fDelta = fHydjetParams.fDelta;
373 fInitialState->fParams.fEpsilon = fHydjetParams.fEpsilon;
375 fInitialState->fParams.fWeakDecay = fHydjetParams.fWeakDecay;
376 fInitialState->fParams.fDecay = 1; // run decays
377 fInitialState->fParams.fCorrS = fHydjetParams.fCorrS;
378 fInitialState->fParams.fEtaType = fHydjetParams.fEtaType;
380 fInitialState->fParams.fPtmin = fHydjetParams.fPtmin;
381 fInitialState->fParams.fNhsel = fHydjetParams.fNhsel;
382 fInitialState->fParams.fIshad = fHydjetParams.fIshad;
383 fInitialState->fParams.fT0 = fHydjetParams.fT0;
384 fInitialState->fParams.fTau0 = fHydjetParams.fTau0;
385 fInitialState->fParams.fNf = fHydjetParams.fNf;
386 fInitialState->fParams.fIenglu = fHydjetParams.fIenglu;
387 fInitialState->fParams.fIanglu = fHydjetParams.fIanglu;
389 fInitialState->SetPDGParticleFilename(fParticleFilename);
390 fInitialState->SetPDGDecayFilename(fDecayFilename);
391 // fInitialState->SetUseCharmParticles(fUseCharmParticles);
392 // fInitialState->SetWidthRange(fMinWidth, fMaxWidth);
393 // fInitialState->SetMassRange(fMinMass, fMaxMass);
394 // for(Int_t i=0; i<fStableFlagged; i++)
395 // fInitialState->SetPDGParticleStable(fStableFlagPDG[i], fStableFlagStatus[i]);
396 // cout << "TUHKMgen::SetAllParameters() OUT" << endl;