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8d2cd130 | 1 | #ifndef ALIGENPYTHIA_H |
2 | #define ALIGENPYTHIA_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | // | |
9 | // Generator using the TPythia interface (via AliPythia) | |
10 | // to generate pp collisions. | |
11 | // Using SetNuclei() also nuclear modifications to the structure functions | |
12 | // can be taken into account. This makes, of course, only sense for the | |
13 | // generation of the products of hard processes (heavy flavor, jets ...) | |
14 | // | |
15 | // andreas.morsch@cern.ch | |
16 | // | |
17 | ||
18 | #include "AliGenMC.h" | |
19 | #include "AliPythia.h" | |
20 | ||
21 | class AliPythia; | |
22 | class TParticle; | |
23 | ||
24 | class AliGenPythia : public AliGenMC | |
25 | { | |
26 | public: | |
27 | ||
28 | typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t; | |
29 | typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t; | |
30 | typedef enum {kCluster, kCell} JetRecMode_t; | |
31 | ||
32 | AliGenPythia(); | |
33 | AliGenPythia(Int_t npart); | |
34 | AliGenPythia(const AliGenPythia &Pythia); | |
35 | virtual ~AliGenPythia(); | |
36 | virtual void Generate(); | |
37 | virtual void Init(); | |
38 | // set a cut on the Z coord. of the primary vertex (cm) | |
39 | // | |
40 | virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1); | |
41 | // select process type | |
42 | virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;} | |
43 | // select structure function | |
44 | virtual void SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;} | |
45 | // select pt of hard scattering | |
46 | virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10) | |
47 | {fPtHardMin = ptmin; fPtHardMax = ptmax; } | |
48 | virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10) | |
49 | {fYHardMin = ymin; fYHardMax = ymax; } | |
50 | // Set initial and final state gluon radiation | |
51 | virtual void SetGluonRadiation(Int_t iIn, Int_t iFin) | |
52 | {fGinit = iIn; fGfinal = iFin;} | |
53 | virtual void SetPtKick(Float_t kt = 1.) | |
54 | {fPtKick = kt;} | |
55 | // set centre of mass energy | |
56 | virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;} | |
57 | // treat protons as inside nuclei | |
58 | virtual void SetNuclei(Int_t a1, Int_t a2); | |
59 | virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4) | |
60 | {fEtMinJet = etmin; fEtMaxJet = etmax;} | |
61 | virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.) | |
62 | {fEtaMinJet = etamin; fEtaMaxJet = etamax;} | |
63 | virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;} | |
64 | virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.) | |
65 | {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;} | |
66 | virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.) | |
67 | {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;} | |
68 | virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.) | |
69 | {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;} | |
70 | // Set option for feed down from higher family | |
71 | virtual void SetFeedDownHigherFamily(Bool_t opt) { | |
72 | fFeedDownOpt = opt; | |
73 | } | |
74 | // Set option for selecting particles kept in stack according to flavor | |
75 | // or to parent selection | |
76 | virtual void SetStackFillOpt(StackFillOpt_t opt) { | |
77 | fStackFillOpt = opt; | |
78 | } | |
79 | // Set fragmentation option | |
80 | virtual void SetFragmentation(const Bool_t opt) { | |
81 | fFragmentation = opt; | |
82 | } | |
83 | // Set counting mode | |
84 | virtual void SetCountMode(const CountMode_t mode) { | |
85 | fCountMode = mode; | |
86 | } | |
87 | ||
88 | // get cross section of process | |
89 | virtual Float_t GetXsection() const {return fXsection;} | |
90 | // get triggered jets | |
91 | void GetJets(Int_t& njets, Int_t& ntrig, Float_t[4][10]); | |
92 | void RecJetsUA1(Float_t eCellMin, Float_t eCellSeed, Float_t eMin, Float_t rMin, | |
93 | Int_t& njets, Float_t jets[4][50]); | |
94 | void LoadEvent(); | |
95 | // Getters | |
96 | virtual Process_t GetProcess() {return fProcess;} | |
97 | virtual StrucFunc_t GetStrucFunc() {return fStrucFunc;} | |
98 | virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax) | |
99 | {ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;} | |
100 | virtual Float_t GetEnergyCMS() {return fEnergyCMS;} | |
101 | virtual void GetNuclei(Int_t& a1, Int_t& a2) | |
102 | {a1 = fNucA1; a2 = fNucA2;} | |
103 | virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax) | |
104 | {etamin = fEtaMinJet; etamax = fEtaMaxJet;} | |
105 | virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) | |
106 | {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();} | |
107 | virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax) | |
108 | {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;} | |
109 | virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax) | |
110 | {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();} | |
111 | // | |
112 | virtual void FinishRun(); | |
113 | Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2); | |
114 | ||
115 | // Assignment Operator | |
116 | AliGenPythia & operator=(const AliGenPythia & rhs); | |
117 | protected: | |
118 | // adjust the weight from kinematic cuts | |
119 | void AdjustWeights(); | |
120 | Int_t GenerateMB(); | |
121 | void MakeHeader(); | |
122 | ||
123 | TClonesArray* fParticles; //Particle List | |
124 | ||
125 | Process_t fProcess; //Process type | |
126 | StrucFunc_t fStrucFunc; //Structure Function | |
127 | Float_t fEnergyCMS; //Centre of mass energy | |
128 | Float_t fKineBias; //!Bias from kinematic selection | |
129 | Int_t fTrials; //!Number of trials for current event | |
130 | Int_t fTrialsRun; //!Number of trials for run | |
131 | Float_t fQ; //Mean Q | |
132 | Float_t fX1; //Mean x1 | |
133 | Float_t fX2; //Mean x2 | |
134 | Int_t fNev; //Number of events | |
135 | Int_t fFlavorSelect; //Heavy Flavor Selection | |
136 | Float_t fXsection; //Cross-section | |
137 | AliPythia *fPythia; //!Pythia | |
138 | Float_t fPtHardMin; //lower pT-hard cut | |
139 | Float_t fPtHardMax; //higher pT-hard cut | |
140 | Float_t fYHardMin; //lower y-hard cut | |
141 | Float_t fYHardMax; //higher y-hard cut | |
142 | Int_t fNucA1; //mass number nucleus side 1 | |
143 | Int_t fNucA2; //mass number nucleus side 2 | |
144 | Int_t fGinit; //initial state gluon radiation | |
145 | Int_t fGfinal; //final state gluon radiation | |
146 | Float_t fPtKick; //Transverse momentum kick | |
147 | Bool_t fFullEvent; //!Write Full event if true | |
148 | AliDecayer *fDecayer; //!Pointer to the decayer instance | |
149 | Int_t fDebugEventFirst; //!First event to debug | |
150 | Int_t fDebugEventLast; //!Last event to debug | |
151 | Float_t fEtMinJet; //Minimum et of triggered Jet | |
152 | Float_t fEtMaxJet; //Maximum et of triggered Jet | |
153 | Float_t fEtaMinJet; //Minimum eta of triggered Jet | |
154 | Float_t fEtaMaxJet; //Maximum eta of triggered Jet | |
155 | Float_t fPhiMinJet; //Minimum phi of triggered Jet | |
156 | Float_t fPhiMaxJet; //Maximum phi of triggered Jet | |
157 | Int_t fJetReconstruction; //Jet Reconstruction mode | |
158 | Float_t fEtaMinGamma; // Minimum eta of triggered gamma | |
159 | Float_t fEtaMaxGamma; // Maximum eta of triggered gamma | |
160 | Float_t fPhiMinGamma; // Minimum phi of triggered gamma | |
161 | Float_t fPhiMaxGamma; // Maximum phi of triggered gamma | |
162 | ||
163 | StackFillOpt_t fStackFillOpt; // Stack filling with all particles with | |
164 | // that flavour or only with selected | |
165 | // parents and their decays | |
166 | Bool_t fFeedDownOpt; // Option to set feed down from higher | |
167 | // quark families (e.g. b->c) | |
168 | Bool_t fFragmentation; // Option to activate fragmentation by Pythia | |
169 | // | |
170 | ||
171 | CountMode_t fCountMode; // Options for counting when the event will be finished. | |
172 | // fCountMode = kCountAll --> All particles that end up in the | |
173 | // stack are counted | |
174 | // fCountMode = kCountParents --> Only selected parents are counted | |
175 | // fCountMode = kCountTrackabless --> Only particles flagged for tracking | |
176 | // are counted | |
177 | // | |
178 | ClassDef(AliGenPythia,4) // AliGenerator interface to Pythia | |
179 | }; | |
180 | #endif | |
181 | ||
182 | ||
183 | ||
184 | ||
185 |