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7b7936e9 | 1 | // This class provides an interface between the HYDJET++ Monte-Carlo model |
2 | // and ROOT (by inheriting from the TGenerator class). | |
b1c2e580 | 3 | // Please look into the FASTMC articles for more documentation on the |
4 | // needed parameters. | |
5 | ||
7b7936e9 | 6 | #ifndef TUHKMGEN_H |
7 | #define TUHKMGEN_H | |
b1c2e580 | 8 | |
9 | #ifndef ROOT_TGenerator | |
10 | #include "TGenerator.h" | |
11 | #endif | |
12 | ||
3fa37a65 | 13 | #ifndef INITIALSTATEHYDJET_H |
7b7936e9 | 14 | #include "UHKM/InitialStateHydjet.h" |
b1c2e580 | 15 | #endif |
16 | ||
17 | #ifndef DATABASE_PDG | |
7b7936e9 | 18 | #include "UHKM/DatabasePDG.h" |
b1c2e580 | 19 | #endif |
20 | ||
21 | #include <string> | |
22 | using namespace std; | |
23 | ||
7b7936e9 | 24 | //class DatabasePDG; |
25 | ||
b1c2e580 | 26 | class TUHKMgen : public TGenerator { |
7b7936e9 | 27 | protected: |
28 | InitialStateHydjet *fInitialState; // HYDJET++ main class which handles the entire Monte-Carlo simulation | |
29 | ParticleAllocator fAllocator; // object which allocates/deallocates memory for the lists of particles | |
7b7936e9 | 30 | List_t fSecondariesList; // list holding the initial particles and the final state particles generated in resonance decays |
31 | Int_t fNPprim; // number of primary particles | |
32 | Int_t fNPsec; // secondary particles | |
33 | InitialParamsHydjet_t fHydjetParams; // struct holding the list of parameters for the initial state | |
34 | // details for the PDG database | |
35 | Char_t fParticleFilename[256]; // particle list filename | |
36 | Char_t fDecayFilename[256]; // decay table filename | |
37 | Int_t fStableFlagPDG[500]; // array of PDG codes flagged to be stable | |
38 | Bool_t fStableFlagStatus[500]; // array of decay flag status | |
39 | Int_t fStableFlagged; // number of toggled decay flags | |
40 | // Bool_t fUseCharmParticles; // flag to turn on/off the use of charm particles | |
41 | // Double_t fMinWidth; // minimum decay width for the particles to be used from the PDG database | |
42 | // Double_t fMaxWidth; // maximum ---- | |
43 | // Double_t fMinMass; // minimum mass for the particles to be used from the PDG database | |
44 | // Double_t fMaxMass; // maximum ---- | |
45 | ||
46 | void SetAllParameters(); | |
47 | ||
48 | private: | |
49 | TUHKMgen(const TUHKMgen&); | |
50 | TUHKMgen& operator=(const TUHKMgen&); | |
51 | ||
b1c2e580 | 52 | public: |
53 | TUHKMgen(); | |
54 | virtual ~TUHKMgen(); | |
55 | virtual void Initialize(); | |
56 | virtual void GenerateEvent(); | |
7b7936e9 | 57 | virtual Int_t ImportParticles(TClonesArray *particles, const Option_t* option="prim"); |
58 | virtual TObjArray* ImportParticles(const Option_t* option="prim"); | |
b1c2e580 | 59 | // this function makes available the PDG info in our database |
60 | virtual DatabasePDG* PDGInfo() const {return fInitialState->PDGInfo();} | |
61 | ||
62 | // Setters | |
63 | // set reasonable default parameters suited for central Au+Au collisions at RHIC(200GeV) | |
64 | void SetAllParametersRHIC(); | |
65 | // set reasonable default parameters suited for central Pb+Pb collisions at LHC(5.5TeV) | |
66 | void SetAllParametersLHC(); | |
67 | ||
68 | void SetEcms(Double_t value) {fHydjetParams.fSqrtS = value;} // CMS energy per nucleon [GeV] (<2.24 given temperature and ch pot are used) | |
69 | void SetAw(Double_t value) {fHydjetParams.fAw = value;} // nuclei mass number | |
70 | void SetIfb(Int_t value) {fHydjetParams.fIfb = value;} //b-simulation: 0-fix,1-distributed | |
71 | void SetBfix(Double_t value) {fHydjetParams.fBfix = value;} // fix impact parameter | |
72 | void SetBmin(Double_t value) {fHydjetParams.fBmin = value;} // Minimum impact parameter | |
73 | void SetBmax(Double_t value) {fHydjetParams.fBmax = value;} // Maximum impact parameter | |
74 | void SetChFrzTemperature(Double_t value) {fHydjetParams.fT = value;} // Temperature for the chemical freezeout [GeV] | |
75 | void SetMuB(Double_t value) {fHydjetParams.fMuB = value;} // Baryonic chemical potential [GeV] | |
76 | void SetMuS(Double_t value) {fHydjetParams.fMuS = value;} // Strangeness chemical potential [GeV] | |
77 | void SetMuQ(Double_t value) {fHydjetParams.fMuI3 = value;} // Isospin chemical potential [GeV] | |
78 | void SetThFrzTemperature(Double_t value) {fHydjetParams.fThFO = value;} // Temperature for the thermal freezeout [GeV] | |
79 | void SetMuPionThermal(Double_t value) {fHydjetParams.fMu_th_pip = value;} // Chemical potential for pi+ at thermal freezeout [GeV] | |
80 | ||
81 | ||
82 | void SetSeed(Int_t value) {fHydjetParams.fSeed = value;} //parameter to set the random nuber seed (=0 the current time is used | |
83 | //to set the random generator seed, !=0 the value fSeed is | |
84 | //used to set the random generator seed and then the state of random | |
85 | //number generator in PYTHIA MRPY(1)=fSeed | |
86 | ||
87 | ||
88 | ||
89 | void SetTauB(Double_t value) {fHydjetParams.fTau = value;} // Proper time for the freeze-out hypersurface [fm/c] | |
90 | void SetSigmaTau(Double_t value) {fHydjetParams.fSigmaTau = value;} // Standard deviation for the proper time (emission duration) [fm/c] | |
91 | void SetRmaxB(Double_t value) {fHydjetParams.fR = value;} // Maximal transverse radius [fm] | |
92 | void SetYlMax(Double_t value) {fHydjetParams.fYlmax = value;} // Maximal fireball longitudinal rapidity | |
93 | void SetEtaRMax(Double_t value) {fHydjetParams.fUmax = value;} // Maximal transverse velocity | |
94 | void SetMomAsymmPar(Double_t value) {fHydjetParams.fDelta = value;} // Momentum asymmetry parameter | |
95 | void SetCoordAsymmPar(Double_t value) {fHydjetParams.fEpsilon = value;} // Coordinate asymmetry parameter | |
96 | ||
97 | ||
7b7936e9 | 98 | void SetFlagWeakDecay(Double_t value) {fHydjetParams.fWeakDecay = value;} //flag to switch on/off weak hadron decays <0: decays off, >0: decays on, (default: 0) |
b1c2e580 | 99 | |
100 | ||
101 | void SetEtaType(Int_t value) {fHydjetParams.fEtaType = value;} // flag to choose rapidity distribution, if fEtaType<=0, | |
102 | //then uniform rapidity distribution in [-fYlmax,fYlmax] if fEtaType>0, | |
103 | //then Gaussian with dispertion = fYlmax | |
104 | ||
105 | ||
106 | void SetGammaS(Double_t value) {fHydjetParams.fCorrS = value;} // Strangeness suppression parameter (if gamma_s<=0 then it will be calculated) | |
107 | //not needed now void SetHdec(Double_t value) {fHydjetParams.fTime = value;} // Enable/disable hadronic decays (<0 no decays, >=0 decays) | |
108 | ||
109 | //PYQUEN parameters | |
110 | void SetPyquenNhsel(Int_t value) {fHydjetParams.fNhsel = value;} // Flag to choose the type of event to be generated | |
111 | ||
112 | void SetPyquenShad(Int_t value) {fHydjetParams.fIshad = value;} //flag to switch on/off impact parameter dependent nuclear | |
113 | // shadowing for gluons and light sea quarks (u,d,s) (0: shadowing off, | |
114 | // 1: shadowing on for fAw=207, 197, 110, 40, default: 1 | |
115 | ||
116 | void SetPyquenPtmin(Double_t value) {fHydjetParams.fPtmin = value;} // Pyquen input parameter for minimum Pt of parton-parton scattering (5GeV<pt<500GeV) | |
117 | // fNhsel = 0 --> UHKM fireball, no jets | |
118 | // fNhsel = 1 --> UHKM fireball, jets with no quenching | |
119 | // fNhsel = 2 --> UHKM fireball, jets with quenching | |
120 | // fNhsel = 3 --> no UHKM fireball, jets with no quenching | |
121 | // fNhsel = 4 --> no UHKM fireball, jets with quenching | |
122 | ||
123 | void SetPyquenT0(Double_t value) {fHydjetParams.fT0 = value;} //proper QGP formation tempereture | |
124 | void SetPyquenTau0(Double_t value) {fHydjetParams.fTau0 = value;} //proper QGP formation time in fm/c (0.01<fTau0<10) | |
125 | void SetPyquenNf(Int_t value) {fHydjetParams.fNf = value;} //number of active quark flavours N_f in QGP fNf=0, 1,2 or 3 | |
126 | void SetPyquenIenglu(Int_t value) {fHydjetParams.fIenglu = value;} // flag to fix type of in-medium partonic energy loss | |
127 | //(0: radiative and collisional loss, 1: radiative loss only, 2: | |
128 | //collisional loss only) (default: 0); | |
129 | void SetPyquenIanglu(Int_t value) {fHydjetParams.fIanglu = value;} //flag to fix type of angular distribution of in-medium emitted | |
130 | // gluons (0: small-angular, 1: wide-angular, 2:collinear) (default: 0). | |
131 | ||
132 | ||
7b7936e9 | 133 | void SetPDGParticleFile(const Char_t *name) {strcpy(fParticleFilename, name);} // Set the filename containing the particle PDG info |
134 | void SetPDGDecayFile(const Char_t *name) {strcpy(fDecayFilename, name);} // Set the filename containing the PDG decay channels info | |
b1c2e580 | 135 | void SetPDGParticleStable(Int_t pdg, Bool_t value) { // Turn on/off the decay flag for a PDG particle |
136 | fStableFlagPDG[fStableFlagged] = pdg; | |
137 | fStableFlagStatus[fStableFlagged++] = value; | |
138 | } | |
7b7936e9 | 139 | // void SetUseCharmParticles(Bool_t flag) {fUseCharmParticles = flag;} |
140 | // void SetMinimumWidth(Double_t value) {fMinWidth = value;} | |
141 | // void SetMaximumWidth(Double_t value) {fMaxWidth = value;} | |
142 | // void SetMinimumMass(Double_t value) {fMinMass = value;} | |
143 | // void SetMaximumMass(Double_t value) {fMaxMass = value;} | |
b1c2e580 | 144 | |
145 | //Getters | |
146 | ||
7b7936e9 | 147 | Double_t GetEcms() const {return fHydjetParams.fSqrtS;} |
148 | Double_t GetAw() const {return fHydjetParams.fAw;} | |
149 | Double_t GetIfb() const {return fHydjetParams.fIfb;} | |
150 | Double_t GetBfix() const {return fHydjetParams.fBfix;} | |
151 | Double_t GetBmin() const {return fHydjetParams.fBmin;} | |
152 | Double_t GetBmax() const {return fHydjetParams.fBmax;} | |
153 | Double_t GetChFrzTemperature() const {return fHydjetParams.fT;} | |
154 | Double_t GetMuB() const {return fHydjetParams.fMuB;} | |
155 | Double_t GetMuS() const {return fHydjetParams.fMuS;} | |
156 | Double_t GetMuQ() const {return fHydjetParams.fMuI3;} | |
157 | Double_t GetThFrzTemperature() const {return fHydjetParams.fThFO;} | |
158 | Double_t GetMuPionThermal() const {return fHydjetParams.fMu_th_pip;} | |
159 | Int_t GetSeed() const {return fHydjetParams.fSeed;} | |
160 | Double_t GetTauB() const {return fHydjetParams.fTau;} | |
161 | Double_t GetSigmaTau() const {return fHydjetParams.fSigmaTau;} | |
162 | Double_t GetRmaxB() const {return fHydjetParams.fR;} | |
163 | Double_t GetYlMax() const {return fHydjetParams.fYlmax;} | |
164 | Double_t GetEtaRMax() const {return fHydjetParams.fUmax;} | |
165 | Double_t GetMomAsymmPar() const {return fHydjetParams.fDelta;} | |
166 | Double_t GetCoordAsymmPar() const {return fHydjetParams.fEpsilon;} | |
167 | Double_t GetFlagWeakDecay() const {return fHydjetParams.fWeakDecay;} | |
168 | Int_t GetEtaType() const {return fHydjetParams.fEtaType;} | |
169 | Double_t GetGammaS() const {return fHydjetParams.fCorrS;} | |
170 | Int_t GetPyquenNhsel() const {return fHydjetParams.fNhsel;} | |
171 | Int_t GetPyquenShad() const {return fHydjetParams.fIshad;} | |
172 | Double_t GetPyquenPtmin() const {return fHydjetParams.fPtmin;} | |
173 | Double_t GetPyquenT0() const {return fHydjetParams.fT0;} | |
174 | Double_t GetPyquenTau0() const {return fHydjetParams.fTau0;} | |
175 | Double_t GetPyquenNf() const {return fHydjetParams.fNf;} | |
176 | Double_t GetPyquenIenglu() const {return fHydjetParams.fIenglu;} | |
177 | Double_t GetPyquenIanglu() const {return fHydjetParams.fIanglu;} | |
b1c2e580 | 178 | |
7b7936e9 | 179 | const Char_t* GetPDGParticleFile() const {return fParticleFilename;} |
180 | const Char_t* GetPDGDecayFile() const {return fDecayFilename;} | |
181 | // Bool_t GetUseCharmParticles(){return fUseCharmParticles;} | |
182 | // Double_t GetMinimumWidth() {return fMinWidth;} | |
183 | // Double_t GetMaximumWidth() {return fMaxWidth;} | |
184 | // Double_t GetMinimumMass() {return fMinMass;} | |
185 | // Double_t GetMaximumMass() {return fMaxMass;} | |
b1c2e580 | 186 | |
786056a2 | 187 | void Print(const Option_t* opt="") const; |
188 | ||
b1c2e580 | 189 | ClassDef(TUHKMgen, 3) //Interface to FASTMC Event Generator |
190 | }; | |
191 | #endif | |
192 | ||
193 | ||
194 | ||
195 | ||
196 | ||
197 | ||
198 |