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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; | |
e5c87a3d | 23 | class AliGenPythiaEventHeader; |
32d6ef7d | 24 | class AliStack; |
5fa4b20b | 25 | class AliRunLoader; |
26 | ||
8d2cd130 | 27 | class AliGenPythia : public AliGenMC |
28 | { | |
29 | public: | |
30 | ||
31 | typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t; | |
32 | typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t; | |
33 | typedef enum {kCluster, kCell} JetRecMode_t; | |
34 | ||
35 | AliGenPythia(); | |
36 | AliGenPythia(Int_t npart); | |
37 | AliGenPythia(const AliGenPythia &Pythia); | |
38 | virtual ~AliGenPythia(); | |
39 | virtual void Generate(); | |
40 | virtual void Init(); | |
41 | // set a cut on the Z coord. of the primary vertex (cm) | |
42 | // | |
43 | virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1); | |
44 | // select process type | |
45 | virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;} | |
46 | // select structure function | |
47 | virtual void SetStrucFunc(StrucFunc_t func = kGRVHO) {fStrucFunc = func;} | |
48 | // select pt of hard scattering | |
49 | virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10) | |
50 | {fPtHardMin = ptmin; fPtHardMax = ptmax; } | |
51 | virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10) | |
52 | {fYHardMin = ymin; fYHardMax = ymax; } | |
53 | // Set initial and final state gluon radiation | |
54 | virtual void SetGluonRadiation(Int_t iIn, Int_t iFin) | |
55 | {fGinit = iIn; fGfinal = iFin;} | |
56 | virtual void SetPtKick(Float_t kt = 1.) | |
57 | {fPtKick = kt;} | |
58 | // set centre of mass energy | |
59 | virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;} | |
60 | // treat protons as inside nuclei | |
61 | virtual void SetNuclei(Int_t a1, Int_t a2); | |
62 | virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4) | |
63 | {fEtMinJet = etmin; fEtMaxJet = etmax;} | |
64 | virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.) | |
65 | {fEtaMinJet = etamin; fEtaMaxJet = etamax;} | |
66 | virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;} | |
67 | virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.) | |
68 | {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;} | |
69 | virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.) | |
70 | {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;} | |
71 | virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.) | |
72 | {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;} | |
73 | // Set option for feed down from higher family | |
74 | virtual void SetFeedDownHigherFamily(Bool_t opt) { | |
75 | fFeedDownOpt = opt; | |
76 | } | |
77 | // Set option for selecting particles kept in stack according to flavor | |
78 | // or to parent selection | |
79 | virtual void SetStackFillOpt(StackFillOpt_t opt) { | |
80 | fStackFillOpt = opt; | |
81 | } | |
82 | // Set fragmentation option | |
c125238c | 83 | virtual void SetFragmentation(Bool_t opt) { |
8d2cd130 | 84 | fFragmentation = opt; |
85 | } | |
86 | // Set counting mode | |
c125238c | 87 | virtual void SetCountMode(CountMode_t mode) { |
8d2cd130 | 88 | fCountMode = mode; |
89 | } | |
b6bbf811 | 90 | // Set quenching mode 0 = no, 1 = AM, 2 = IL |
7ea3ea5b | 91 | virtual void SetQuench(Int_t flag = 0) {fQuench = flag;} |
5fa4b20b | 92 | virtual void SetHadronisation(Int_t flag = 1) {fHadronisation = flag;} |
93 | virtual void SetReadFromFile(const Text_t *filname) {fFileName = filname; fReadFromFile = 1;} | |
7ea3ea5b | 94 | |
8d2cd130 | 95 | // get cross section of process |
96 | virtual Float_t GetXsection() const {return fXsection;} | |
97 | // get triggered jets | |
98 | void GetJets(Int_t& njets, Int_t& ntrig, Float_t[4][10]); | |
014a9521 | 99 | void RecJetsUA1(Int_t& njets, Float_t jets[4][50]); |
592f8307 | 100 | void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432, |
101 | Float_t thresh = 0., Float_t etseed = 4., | |
102 | Float_t minet = 10., Float_t r = 1.); | |
103 | ||
5fa4b20b | 104 | void LoadEvent(AliStack* stack, Int_t flag = 0, Int_t reHadr = 0); |
8d2cd130 | 105 | // Getters |
106 | virtual Process_t GetProcess() {return fProcess;} | |
107 | virtual StrucFunc_t GetStrucFunc() {return fStrucFunc;} | |
108 | virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax) | |
109 | {ptmin = fPtHardMin; ptmax = fPtHardMax = ptmax;} | |
110 | virtual Float_t GetEnergyCMS() {return fEnergyCMS;} | |
111 | virtual void GetNuclei(Int_t& a1, Int_t& a2) | |
1a626d4e | 112 | {a1 = fAProjectile; a2 = fATarget;} |
8d2cd130 | 113 | virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax) |
114 | {etamin = fEtaMinJet; etamax = fEtaMaxJet;} | |
115 | virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) | |
116 | {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();} | |
117 | virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax) | |
118 | {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;} | |
119 | virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax) | |
120 | {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();} | |
121 | // | |
122 | virtual void FinishRun(); | |
123 | Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2); | |
124 | ||
125 | // Assignment Operator | |
126 | AliGenPythia & operator=(const AliGenPythia & rhs); | |
127 | protected: | |
128 | // adjust the weight from kinematic cuts | |
129 | void AdjustWeights(); | |
130 | Int_t GenerateMB(); | |
131 | void MakeHeader(); | |
132 | ||
8d2cd130 | 133 | |
134 | Process_t fProcess; //Process type | |
135 | StrucFunc_t fStrucFunc; //Structure Function | |
136 | Float_t fEnergyCMS; //Centre of mass energy | |
137 | Float_t fKineBias; //!Bias from kinematic selection | |
138 | Int_t fTrials; //!Number of trials for current event | |
139 | Int_t fTrialsRun; //!Number of trials for run | |
140 | Float_t fQ; //Mean Q | |
141 | Float_t fX1; //Mean x1 | |
142 | Float_t fX2; //Mean x2 | |
143 | Int_t fNev; //Number of events | |
144 | Int_t fFlavorSelect; //Heavy Flavor Selection | |
145 | Float_t fXsection; //Cross-section | |
146 | AliPythia *fPythia; //!Pythia | |
147 | Float_t fPtHardMin; //lower pT-hard cut | |
148 | Float_t fPtHardMax; //higher pT-hard cut | |
149 | Float_t fYHardMin; //lower y-hard cut | |
150 | Float_t fYHardMax; //higher y-hard cut | |
8d2cd130 | 151 | Int_t fGinit; //initial state gluon radiation |
152 | Int_t fGfinal; //final state gluon radiation | |
5fa4b20b | 153 | Int_t fHadronisation; //hadronisation |
154 | Int_t fNpartons; //Number of partons before hadronisation | |
155 | Int_t fReadFromFile; //read partons from file | |
7ea3ea5b | 156 | Int_t fQuench; //Flag for quenching |
8d2cd130 | 157 | Float_t fPtKick; //Transverse momentum kick |
158 | Bool_t fFullEvent; //!Write Full event if true | |
159 | AliDecayer *fDecayer; //!Pointer to the decayer instance | |
160 | Int_t fDebugEventFirst; //!First event to debug | |
161 | Int_t fDebugEventLast; //!Last event to debug | |
162 | Float_t fEtMinJet; //Minimum et of triggered Jet | |
163 | Float_t fEtMaxJet; //Maximum et of triggered Jet | |
164 | Float_t fEtaMinJet; //Minimum eta of triggered Jet | |
165 | Float_t fEtaMaxJet; //Maximum eta of triggered Jet | |
166 | Float_t fPhiMinJet; //Minimum phi of triggered Jet | |
167 | Float_t fPhiMaxJet; //Maximum phi of triggered Jet | |
168 | Int_t fJetReconstruction; //Jet Reconstruction mode | |
169 | Float_t fEtaMinGamma; // Minimum eta of triggered gamma | |
170 | Float_t fEtaMaxGamma; // Maximum eta of triggered gamma | |
171 | Float_t fPhiMinGamma; // Minimum phi of triggered gamma | |
172 | Float_t fPhiMaxGamma; // Maximum phi of triggered gamma | |
592f8307 | 173 | Float_t fPycellEtaMax; // Max. eta for Pycell |
174 | Int_t fPycellNEta; // Number of eta bins for Pycell | |
175 | Int_t fPycellNPhi; // Number of phi bins for Pycell | |
176 | Float_t fPycellThreshold; // Pycell threshold | |
177 | Float_t fPycellEtSeed; // Pycell seed | |
178 | Float_t fPycellMinEtJet; // Pycell min. jet et | |
179 | Float_t fPycellMaxRadius; // Pycell cone radius | |
8d2cd130 | 180 | StackFillOpt_t fStackFillOpt; // Stack filling with all particles with |
181 | // that flavour or only with selected | |
182 | // parents and their decays | |
183 | Bool_t fFeedDownOpt; // Option to set feed down from higher | |
184 | // quark families (e.g. b->c) | |
185 | Bool_t fFragmentation; // Option to activate fragmentation by Pythia | |
1d568bc2 | 186 | Bool_t fSetNuclei; // Flag indicating that SetNuclei has been called |
8d2cd130 | 187 | // |
188 | ||
5fa4b20b | 189 | CountMode_t fCountMode; // Options for counting when the event will be finished. |
190 | AliGenPythiaEventHeader* fHeader; //! Event header | |
191 | AliRunLoader* fRL; //! Run Loader | |
2bcdbef3 | 192 | const Text_t* fFileName; //! Name of file to read from |
e5c87a3d | 193 | |
8d2cd130 | 194 | // fCountMode = kCountAll --> All particles that end up in the |
195 | // stack are counted | |
196 | // fCountMode = kCountParents --> Only selected parents are counted | |
197 | // fCountMode = kCountTrackabless --> Only particles flagged for tracking | |
198 | // are counted | |
199 | // | |
e5c87a3d | 200 | ClassDef(AliGenPythia,5) // AliGenerator interface to Pythia |
8d2cd130 | 201 | }; |
202 | #endif | |
203 | ||
204 | ||
205 | ||
206 | ||
207 |