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[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 virtual ~AliGenPythia();
40 virtual void Generate();
41 virtual void Init();
42 // set a cut on the Z coord. of the primary vertex (cm)
43 //
44 virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
45 // select process type
46 virtual void SetProcess(Process_t proc = kPyCharm) {fProcess = proc;}
47 // select structure function
48 virtual void SetStrucFunc(StrucFunc_t func = kCTEQ5L) {fStrucFunc = func;}
49 // select pt of hard scattering
50 virtual void SetPtHard(Float_t ptmin = 0, Float_t ptmax = 1.e10)
51 {fPtHardMin = ptmin; fPtHardMax = ptmax; }
52 virtual void SetYHard(Float_t ymin = -1.e10, Float_t ymax = 1.e10)
53 {fYHardMin = ymin; fYHardMax = ymax; }
54 // Set initial and final state gluon radiation
55 virtual void SetGluonRadiation(Int_t iIn, Int_t iFin)
56 {fGinit = iIn; fGfinal = iFin;}
57 virtual void SetPtKick(Float_t kt = 1.)
58 {fPtKick = kt;}
59 // Use the Pythia 6.3 new multiple interations scenario
60 virtual void UseNewMultipleInteractionsScenario() {fNewMIS = kTRUE;}
61 // Switch off heavy flavors
62 virtual void SwitchHFOff() {fHFoff = kTRUE;}
63 // set centre of mass energy
64 virtual void SetEnergyCMS(Float_t energy = 5500) {fEnergyCMS = energy;}
65 // treat protons as inside nuclei
66 virtual void SetNuclei(Int_t a1, Int_t a2);
67 virtual void SetJetEtRange(Float_t etmin = 0., Float_t etmax = 1.e4)
68 {fEtMinJet = etmin; fEtMaxJet = etmax;}
69 virtual void SetJetEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
70 {fEtaMinJet = etamin; fEtaMaxJet = etamax;}
71 virtual void SetJetReconstructionMode(Int_t mode = kCell) {fJetReconstruction = mode;}
72 virtual void SetJetPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
73 {fPhiMinJet = TMath::Pi()*phimin/180.; fPhiMaxJet = TMath::Pi()*phimax/180.;}
74 virtual void SetGammaEtaRange(Float_t etamin = -20., Float_t etamax = 20.)
75 {fEtaMinGamma = etamin; fEtaMaxGamma = etamax;}
76 virtual void SetGammaPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
77 {fPhiMinGamma = TMath::Pi()*phimin/180.; fPhiMaxGamma = TMath::Pi()*phimax/180.;}
78
79 // Select jets with fragmentation photon or pi0 going to PHOS or EMCAL
80
81 virtual void SetFragPhotonInCalo(Bool_t b) {fFragPhotonInCalo = b;}
82 virtual void SetPi0InCalo (Bool_t b) {fPi0InCalo = b;}
83 virtual void SetCheckPHOS (Bool_t b) {fCheckPHOS = b;}
84 virtual void SetCheckEMCAL(Bool_t b) {fCheckEMCAL = b;}
85
86 virtual void SetFragPhotonInEMCAL(Bool_t b)
87 {fCheckEMCAL = b; fFragPhotonInCalo = b ;}
88 virtual void SetFragPhotonInPHOS(Bool_t b)
89 {fCheckPHOS = b ; fFragPhotonInCalo = b ;}
90 virtual void SetPi0InEMCAL(Bool_t b)
91 {fCheckEMCAL = b ; fPi0InCalo = b ;}
92 virtual void SetPi0InPHOS(Bool_t b)
93 {fCheckPHOS = b ; fPi0InCalo = b ;}
94
95 virtual void SetFragPhotonOrPi0MinPt(Float_t pt) {fFragPhotonOrPi0MinPt=pt;}
96
97 // Trigger on a particle
98 virtual void SetTriggerParticle(Int_t particle = 0, Float_t etamax = 0.9)
99 {fTriggerParticle = particle; fTriggerEta = etamax;}
100 // Set option for feed down from higher family
101 virtual void SetFeedDownHigherFamily(Bool_t opt) {
102 fFeedDownOpt = opt;
103 }
104 // Set option for selecting particles kept in stack according to flavor
105 // or to parent selection
106 virtual void SetStackFillOpt(StackFillOpt_t opt) {
107 fStackFillOpt = opt;
108 }
109 // Set fragmentation option
110 virtual void SetFragmentation(Bool_t opt) {
111 fFragmentation = opt;
112 }
113 // Set counting mode
114 virtual void SetCountMode(CountMode_t mode) {
115 fCountMode = mode;
116 }
117 // Set quenching mode 0 = no, 1 = AM, 2 = IL
118 virtual void SetQuench(Int_t flag = 0) {fQuench = flag;}
119 virtual void SetHadronisation(Int_t flag = 1) {fHadronisation = flag;}
120 virtual void SetReadFromFile(const Text_t *filname) {fFileName = filname; fReadFromFile = 1;}
121
122 // Get interaction rate for pileup studies
123 virtual void SetInteractionRate(Float_t rate,Float_t timewindow = 90.e-6);
124 virtual Float_t GetInteractionRate() const {return fInteractionRate;}
125 // get cross section of process
126 virtual Float_t GetXsection() const {return fXsection;}
127 // get triggered jets
128 void GetJets(Int_t& njets, Int_t& ntrig, Float_t jets[4][10]);
129 void RecJetsUA1(Int_t& njets, Float_t jets[4][50]);
130 void SetPycellParameters(Float_t etamax = 2., Int_t neta = 274, Int_t nphi = 432,
131 Float_t thresh = 0., Float_t etseed = 4.,
132 Float_t minet = 10., Float_t r = 1.);
133
134 void LoadEvent(AliStack* stack, Int_t flag = 0, Int_t reHadr = 0);
135 // Getters
136 virtual Process_t GetProcess() const {return fProcess;}
137 virtual StrucFunc_t GetStrucFunc() const {return fStrucFunc;}
138 virtual void GetPtHard(Float_t& ptmin, Float_t& ptmax) const
139 {ptmin = fPtHardMin; ptmax = fPtHardMax;}
140 virtual Float_t GetEnergyCMS() const {return fEnergyCMS;}
141 virtual void GetNuclei(Int_t& a1, Int_t& a2) const
142 {a1 = fAProjectile; a2 = fATarget;}
143 virtual void GetJetEtRange(Float_t& etamin, Float_t& etamax) const
144 {etamin = fEtaMinJet; etamax = fEtaMaxJet;}
145 virtual void GetJetPhiRange(Float_t& phimin, Float_t& phimax) const
146 {phimin = fPhiMinJet*180./TMath::Pi(); phimax = fPhiMaxJet*180/TMath::Pi();}
147 virtual void GetGammaEtaRange(Float_t& etamin, Float_t& etamax) const
148 {etamin = fEtaMinGamma; etamax = fEtaMaxGamma;}
149 virtual void GetGammaPhiRange(Float_t& phimin, Float_t& phimax) const
150 {phimin = fPhiMinGamma*180./TMath::Pi(); phimax = fPhiMaxGamma*180./TMath::Pi();}
151 //
152 Bool_t IsInEMCAL(Float_t phi, Float_t eta);
153 Bool_t IsInPHOS(Float_t phi, Float_t eta);
154 //
155 virtual void FinishRun();
156 Bool_t CheckTrigger(TParticle* jet1, TParticle* jet2);
157
158 //Used in some processes to selected child properties
159 Bool_t CheckKinematicsOnChild();
160
161
162 void GetSubEventTime();
163 void AddHeader(AliGenEventHeader* header);
164
165 protected:
166 // adjust the weight from kinematic cuts
167 void AdjustWeights() const;
168 Int_t GenerateMB();
169 void MakeHeader();
170 void GeneratePileup();
171 Process_t fProcess; //Process type
172 StrucFunc_t fStrucFunc; //Structure Function
173 Float_t fEnergyCMS; //Centre of mass energy
174 Float_t fKineBias; //!Bias from kinematic selection
175 Int_t fTrials; //!Number of trials for current event
176 Int_t fTrialsRun; //!Number of trials for run
177 Float_t fQ; //Mean Q
178 Float_t fX1; //Mean x1
179 Float_t fX2; //Mean x2
180 Float_t fEventTime; //Time of the subevent
181 Float_t fInteractionRate; //Interaction rate (set by user)
182 Float_t fTimeWindow; //Time window for pileup events (set by user)
183 Int_t fCurSubEvent; //Index of the current sub-event
184 TArrayF *fEventsTime; //Subevents time for pileup
185 Int_t fNev; //Number of events
186 Int_t fFlavorSelect; //Heavy Flavor Selection
187 Float_t fXsection; //Cross-section
188 AliPythia *fPythia; //!Pythia
189 Float_t fPtHardMin; //lower pT-hard cut
190 Float_t fPtHardMax; //higher pT-hard cut
191 Float_t fYHardMin; //lower y-hard cut
192 Float_t fYHardMax; //higher y-hard cut
193 Int_t fGinit; //initial state gluon radiation
194 Int_t fGfinal; //final state gluon radiation
195 Int_t fHadronisation; //hadronisation
196 Int_t fNpartons; //Number of partons before hadronisation
197 Int_t fReadFromFile; //read partons from file
198 Int_t fQuench; //Flag for quenching
199 Float_t fPtKick; //Transverse momentum kick
200 Bool_t fFullEvent; //!Write Full event if true
201 AliDecayer *fDecayer; //!Pointer to the decayer instance
202 Int_t fDebugEventFirst; //!First event to debug
203 Int_t fDebugEventLast; //!Last event to debug
204 Float_t fEtMinJet; //Minimum et of triggered Jet
205 Float_t fEtMaxJet; //Maximum et of triggered Jet
206 Float_t fEtaMinJet; //Minimum eta of triggered Jet
207 Float_t fEtaMaxJet; //Maximum eta of triggered Jet
208 Float_t fPhiMinJet; //Minimum phi of triggered Jet
209 Float_t fPhiMaxJet; //Maximum phi of triggered Jet
210 Int_t fJetReconstruction; //Jet Reconstruction mode
211 Float_t fEtaMinGamma; // Minimum eta of triggered gamma
212 Float_t fEtaMaxGamma; // Maximum eta of triggered gamma
213 Float_t fPhiMinGamma; // Minimum phi of triggered gamma
214 Float_t fPhiMaxGamma; // Maximum phi of triggered gamma
215 Float_t fPycellEtaMax; // Max. eta for Pycell
216 Int_t fPycellNEta; // Number of eta bins for Pycell
217 Int_t fPycellNPhi; // Number of phi bins for Pycell
218 Float_t fPycellThreshold; // Pycell threshold
219 Float_t fPycellEtSeed; // Pycell seed
220 Float_t fPycellMinEtJet; // Pycell min. jet et
221 Float_t fPycellMaxRadius; // Pycell cone radius
222 StackFillOpt_t fStackFillOpt; // Stack filling with all particles with
223 // that flavour or only with selected
224 // parents and their decays
225 Bool_t fFeedDownOpt; // Option to set feed down from higher
226 // quark families (e.g. b->c)
227 Bool_t fFragmentation; // Option to activate fragmentation by Pythia
228 Bool_t fSetNuclei; // Flag indicating that SetNuclei has been called
229 Bool_t fNewMIS; // Flag for the new multipple interactions scenario
230 Bool_t fHFoff; // Flag for switching heafy flavor production off
231 Int_t fTriggerParticle; // Trigger on this particle ...
232 Float_t fTriggerEta; // .. within |eta| < fTriggerEta
233 //
234 CountMode_t fCountMode; // Options for counting when the event will be finished.
235 AliGenPythiaEventHeader* fHeader; //! Event header
236 AliRunLoader* fRL; //! Run Loader
237 const Text_t* fFileName; //! Name of file to read from
238
239 // fCountMode = kCountAll --> All particles that end up in the
240 // stack are counted
241 // fCountMode = kCountParents --> Only selected parents are counted
242 // fCountMode = kCountTrackabless --> Only particles flagged for tracking
243 // are counted
244 //
245
246 Bool_t fFragPhotonInCalo ; // Option ask for Fragmentation Photon in calorimeters acceptance
247 Bool_t fPi0InCalo ; // Option ask for Pi0 in calorimeters acceptance
248 Bool_t fCheckEMCAL ; // Option ask for FragPhoton or Pi0 in calorimeters EMCAL acceptance
249 Bool_t fCheckPHOS ; // Option ask for FragPhoton or Pi0 in calorimeters PHOS acceptance
250 Float_t fFragPhotonOrPi0MinPt ; // Minimum momentum of Fragmentation Photon or Pi0
251 //Calorimeters eta-phi acceptance
252 Float_t fPHOSMinPhi ;
253 Float_t fPHOSMaxPhi ;
254 Float_t fPHOSEta ;
255 Float_t fEMCALMinPhi ;
256 Float_t fEMCALMaxPhi ;
257 Float_t fEMCALEta ;
258
259 private:
260 AliGenPythia(const AliGenPythia &Pythia);
261 AliGenPythia & operator=(const AliGenPythia & rhs);
262
263 ClassDef(AliGenPythia,5) // AliGenerator interface to Pythia
264};
265#endif
266
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270