3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 // Generator using HERWIG as an external generator
9 // The main HERWIG options are accessable for the user through this interface.
10 // Author Andreas Morsch
11 // andreas.morsch@cern.ch
17 #include <AliStructFuncType.h>
25 class AliGenHerwig : public AliGenMC
28 enum {kNoTrigger, kHardProcesses, kDirectPhotons};
32 AliGenHerwig(Int_t npart);
33 virtual ~AliGenHerwig();
34 virtual void Generate();
36 virtual void InitJimmy();
37 // set centre of mass energy
38 virtual void SetBeamMomenta(Float_t p1=7000., Float_t p2=7000.)
39 {fMomentum1 = p1; fMomentum2 = p2;}
40 virtual void SetProcess(Int_t proc) {fProcess = proc;}
41 virtual void KeepFullEvent();
42 virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
43 virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
44 virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
45 virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
46 virtual void SetStrucFunc(StrucFunc_t func = kCTEQ5L)
48 virtual void SetPtHardMin(Double_t pt) {fPtHardMin=pt;}
49 virtual void SetPtRMS(Double_t pt) {fPtRMS=pt;}
50 virtual void SetMaxPr(Int_t i) {fMaxPr=i;}
51 virtual void SetMaxErrors(Int_t i) {fMaxErrors=i;}
52 virtual void FinishRun();
53 virtual void FinishRunJimmy();
54 virtual void SetEnSoft(Double_t e) {fEnSoft=e;}
56 virtual void SetHardProcessFile(TString filename) {fFileName=TString(filename);};
57 virtual void SetEventListRange(Int_t eventFirst=-1, Int_t eventLast=-1);
60 Bool_t SelectFlavor(Int_t pid);
63 TString fAutPDF; // PDF group
64 Int_t fModPDF; // PDF set
65 StrucFunc_t fStrucFunc; //Structure Function
66 Int_t fKeep; // Flag to keep full event information
67 Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
68 Int_t fTrigger; // Trigger type
69 Int_t fSelectAll; // Flag to write the full event
70 Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
71 Float_t fEnergyCMS; // Centre of mass energy
72 Float_t fMomentum1; // Momentum of projectile
73 Float_t fMomentum2; // Momentum of target
74 Float_t fKineBias; // Bias from kinematic selection
75 Int_t fTrials; // Number of trials
76 Float_t fXsection; // Cross-section
77 THerwig6 *fHerwig; // Herwig
78 Int_t fProcess; // Process number
79 Double_t fPtHardMin; // lower pT-hard cut
80 Double_t fPtRMS; // intrinsic pt of incoming hadrons
81 Int_t fMaxPr; // maximum number of events to print out
82 Int_t fMaxErrors; // maximum number of errors allowed
83 Double_t fEnSoft; // change on soft energy distribution
84 Int_t fEv1Pr; // first event to be printed
85 Int_t fEv2Pr; // last event to be printed
86 TString fFileName; //!Name of file to read from hard scattering
89 AliGenHerwig(const AliGenHerwig &Herwig);
90 AliGenHerwig & operator=(const AliGenHerwig & rhs);
92 // check if particle is selected as parent particle
93 Bool_t ParentSelected(Int_t ip);
94 // check if particle is selected as child particle
95 Bool_t ChildSelected(Int_t ip);
96 // adjust the weight from kinematic cuts
98 // check seleted daughters
99 Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles);
101 Bool_t Stable(TParticle* particle);
105 ClassDef(AliGenHerwig,1) // AliGenerator interface to Herwig