New PID class for EMCAL, bayesian analysis done with ESD data, PID information filled...
[u/mrichter/AliRoot.git] / PYTHIA6 / AliGenPythia.h
... / ...
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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
7/* $Id$ */
8
9//
10// Generator using the TPythia interface (via AliPythia)
11// to generate pp collisions.
12// Using SetNuclei() also nuclear modifications to the structure functions
13// can be taken into account. This makes, of course, only sense for the
14// generation of the products of hard processes (heavy flavor, jets ...)
15//
16// andreas.morsch@cern.ch
17//
18
19#include "AliGenMC.h"
20#include "AliPythia.h"
21
22class AliPythia;
23class TParticle;
24class AliGenPythiaEventHeader;
25class AliGenEventHeader;
26class AliStack;
27class AliRunLoader;
28
29class AliGenPythia : public AliGenMC
30{
31 public:
32
33 typedef enum {kFlavorSelection, kParentSelection} StackFillOpt_t;
34 typedef enum {kCountAll, kCountParents, kCountTrackables} CountMode_t;
35 typedef enum {kCluster, kCell} JetRecMode_t;
36
37 AliGenPythia();
38 AliGenPythia(Int_t npart);
39 AliGenPythia(const AliGenPythia &Pythia);
40 virtual ~AliGenPythia();
41 virtual void Generate();
42 virtual void Init();
43 // set a cut on the Z coord. of the primary vertex (cm)
44 //
45 virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
46 // select process type
47 virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
48 // select structure function
49 virtual void SetStrucFunc(StrucFunc_t func = kCTEQ5L) {fStrucFunc = func;}
50 // select pt of hard scattering
51 virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
52 {fPtHardMin = ptmin; fPtHardMax = ptmax; }
53 virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
54 {fYHardMin = ymin; fYHardMax = ymax; }
55 // Set initial and final state gluon radiation
56 virtual void SetGluonRadiation(Int_t iIn, Int_t iFin)
57 {fGinit = iIn; fGfinal = iFin;}
58 virtual void SetPtKick(Float_t kt = 1.)
59 {fPtKick = kt;}
60 // Use the Pythia 6.3 new multiple interations scenario
61 virtual void UseNewMultipleInteractionsScenario() {fNewMIS = kTRUE;}
62 // Switch off heavy flavors
63 virtual void SwitchHFOff() {fHFoff = kTRUE;}
64 // set centre of mass energy
65 virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
66 // treat protons as inside nuclei
67 virtual void SetNuclei(Int_t a1, Int_t a2);
68 virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4)
69 {fEtMinJet = etmin; fEtMaxJet = etmax;}
70 virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
71 {fEtaMinJet = etamin; fEtaMaxJet = etamax;}
72 virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;}
73 virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
74 {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
75 virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
76 {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
77 virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
78 {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
79
80 // Trigger on a particle
81 virtual void SetTriggerParticle(Int_t particle = 0, Float_t etamax = 0.9)
82 {fTriggerParticle = particle; fTriggerEta = etamax;}
83 // Set option for feed down from higher family
84 virtual void SetFeedDownHigherFamily(Bool_t opt) {
85 fFeedDownOpt = opt;
86 }
87 // Set option for selecting particles kept in stack according to flavor
88 // or to parent selection
89 virtual void SetStackFillOpt(StackFillOpt_t opt) {
90 fStackFillOpt = opt;
91 }
92 // Set fragmentation option
93 virtual void SetFragmentation(Bool_t opt) {
94 fFragmentation = opt;
95 }
96 // Set counting mode
97 virtual void SetCountMode(CountMode_t mode) {
98 fCountMode = mode;
99 }
100 // Set quenching mode 0 = no, 1 = AM, 2 = IL
101 virtual void SetQuench(Int_t flag = 0) {fQuench = flag;}
102 virtual void SetHadronisation(Int_t flag = 1) {fHadronisation = flag;}
103 virtual void SetReadFromFile(const Text_t *filname) {fFileName = filname; fReadFromFile = 1;}
104 // Get interaction rate for pileup studies
105 virtual void SetInteractionRate(Float_t rate,Float_t timewindow = 90.e-6);
106 virtual Float_t GetInteractionRate() const {return fInteractionRate;}
107 // get cross section of process
108 virtual Float_t GetXsection() const {return fXsection;}
109 // get triggered jets
110 void GetJets(Int_t& njets, Int_t& ntrig, Float_t jets[4][10]);
111 void RecJetsUA1(Int_t& njets, Float_t jets[4][50]);
112 void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432,
113 Float_t thresh = 0., Float_t etseed = 4.,
114 Float_t minet = 10., Float_t r = 1.);
115
116 void LoadEvent(AliStack* stack, Int_t flag = 0, Int_t reHadr = 0);
117 // Getters
118 virtual Process_t GetProcess() const {return fProcess;}
119 virtual StrucFunc_t GetStrucFunc() const {return fStrucFunc;}
120 virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax) const
121 {ptmin = fPtHardMin; ptmax = fPtHardMax;}
122 virtual Float_t GetEnergyCMS() const {return fEnergyCMS;}
123 virtual void GetNuclei(Int_t& a1, Int_t& a2) const
124 {a1 = fAProjectile; a2 = fATarget;}
125 virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax) const
126 {etamin = fEtaMinJet; etamax = fEtaMaxJet;}
127 virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
128 {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();}
129 virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax) const
130 {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
131 virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax) const
132 {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();}
133 //
134 virtual void FinishRun();
135 Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2);
136
137 //Used in some processes to selected child properties
138 Bool_t CheckKinematicsOnChild();
139
140
141 // Assignment Operator
142 AliGenPythia & operator=(const AliGenPythia & rhs);
143 void GetSubEventTime();
144 void AddHeader(AliGenEventHeader* header);
145
146 protected:
147 // adjust the weight from kinematic cuts
148 void AdjustWeights() const;
149 Int_t GenerateMB();
150 void MakeHeader();
151 void GeneratePileup();
152 Process_t fProcess; //Process type
153 StrucFunc_t fStrucFunc; //Structure Function
154 Float_t fEnergyCMS; //Centre of mass energy
155 Float_t fKineBias; //!Bias from kinematic selection
156 Int_t fTrials; //!Number of trials for current event
157 Int_t fTrialsRun; //!Number of trials for run
158 Float_t fQ; //Mean Q
159 Float_t fX1; //Mean x1
160 Float_t fX2; //Mean x2
161 Float_t fEventTime; //Time of the subevent
162 Float_t fInteractionRate; //Interaction rate (set by user)
163 Float_t fTimeWindow; //Time window for pileup events (set by user)
164 Int_t fCurSubEvent; //Index of the current sub-event
165 TArrayF *fEventsTime; //Subevents time for pileup
166 Int_t fNev; //Number of events
167 Int_t fFlavorSelect; //Heavy Flavor Selection
168 Float_t fXsection; //Cross-section
169 AliPythia *fPythia; //!Pythia
170 Float_t fPtHardMin; //lower pT-hard cut
171 Float_t fPtHardMax; //higher pT-hard cut
172 Float_t fYHardMin; //lower y-hard cut
173 Float_t fYHardMax; //higher y-hard cut
174 Int_t fGinit; //initial state gluon radiation
175 Int_t fGfinal; //final state gluon radiation
176 Int_t fHadronisation; //hadronisation
177 Int_t fNpartons; //Number of partons before hadronisation
178 Int_t fReadFromFile; //read partons from file
179 Int_t fQuench; //Flag for quenching
180 Float_t fPtKick; //Transverse momentum kick
181 Bool_t fFullEvent; //!Write Full event if true
182 AliDecayer *fDecayer; //!Pointer to the decayer instance
183 Int_t fDebugEventFirst; //!First event to debug
184 Int_t fDebugEventLast; //!Last event to debug
185 Float_t fEtMinJet; //Minimum et of triggered Jet
186 Float_t fEtMaxJet; //Maximum et of triggered Jet
187 Float_t fEtaMinJet; //Minimum eta of triggered Jet
188 Float_t fEtaMaxJet; //Maximum eta of triggered Jet
189 Float_t fPhiMinJet; //Minimum phi of triggered Jet
190 Float_t fPhiMaxJet; //Maximum phi of triggered Jet
191 Int_t fJetReconstruction; //Jet Reconstruction mode
192 Float_t fEtaMinGamma; // Minimum eta of triggered gamma
193 Float_t fEtaMaxGamma; // Maximum eta of triggered gamma
194 Float_t fPhiMinGamma; // Minimum phi of triggered gamma
195 Float_t fPhiMaxGamma; // Maximum phi of triggered gamma
196 Float_t fPycellEtaMax; // Max. eta for Pycell
197 Int_t fPycellNEta; // Number of eta bins for Pycell
198 Int_t fPycellNPhi; // Number of phi bins for Pycell
199 Float_t fPycellThreshold; // Pycell threshold
200 Float_t fPycellEtSeed; // Pycell seed
201 Float_t fPycellMinEtJet; // Pycell min. jet et
202 Float_t fPycellMaxRadius; // Pycell cone radius
203 StackFillOpt_t fStackFillOpt; // Stack filling with all particles with
204 // that flavour or only with selected
205 // parents and their decays
206 Bool_t fFeedDownOpt; // Option to set feed down from higher
207 // quark families (e.g. b->c)
208 Bool_t fFragmentation; // Option to activate fragmentation by Pythia
209 Bool_t fSetNuclei; // Flag indicating that SetNuclei has been called
210 Bool_t fNewMIS; // Flag for the new multipple interactions scenario
211 Bool_t fHFoff; // Flag for switching heafy flavor production off
212 Int_t fTriggerParticle; // Trigger on this particle ...
213 Float_t fTriggerEta; // .. within |eta| < fTriggerEta
214 //
215 CountMode_t fCountMode; // Options for counting when the event will be finished.
216 AliGenPythiaEventHeader* fHeader; //! Event header
217 AliRunLoader* fRL; //! Run Loader
218 const Text_t* fFileName; //! Name of file to read from
219
220 // fCountMode = kCountAll --> All particles that end up in the
221 // stack are counted
222 // fCountMode = kCountParents --> Only selected parents are counted
223 // fCountMode = kCountTrackabless --> Only particles flagged for tracking
224 // are counted
225 //
226 ClassDef(AliGenPythia,5) // AliGenerator interface to Pythia
227};
228#endif
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