updated parametrisation for pi0, eta, omega, phi for different energies, allow select...
[u/mrichter/AliRoot.git] / EVGEN / AliGenMC.h
... / ...
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1#ifndef ALIGENMC_H
2#define ALIGENMC_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// Base class for generators using external MC generators.
10// For example AliGenPythia using Pythia.
11// Provides basic functionality: setting of kinematic cuts on
12// decay products and particle selection.
13// andreas.morsch@cern.ch
14
15#include<TClonesArray.h>
16#include <TArrayI.h>
17#include <TString.h>
18class TParticle;
19
20class AliGeometry;
21class AliGenEventHeader;
22#include "AliGenerator.h"
23#include "AliDecayer.h"
24
25class AliGenMC : public AliGenerator
26{
27 public:
28 AliGenMC();
29 AliGenMC(Int_t npart);
30 virtual ~AliGenMC();
31 virtual void Init();
32 virtual void SetForceDecay(Decay_t decay = kAll) {fForceDecay = decay;}
33 virtual void SetCutOnChild(Int_t flag = 0) {fCutOnChild = flag;}
34 virtual void SetChildMomentumRange(Float_t pmin = 0, Float_t pmax = 1.e10)
35 {fChildPMin = pmin; fChildPMax = pmax;}
36 virtual void SetChildPtRange(Float_t ptmin = 0, Float_t ptmax = 20.)
37 {fChildPtMin = ptmin; fChildPtMax = ptmax;}
38 virtual void SetChildPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
39 {fChildPhiMin = TMath::Pi()*phimin/180;
40 fChildPhiMax = TMath::Pi()*phimax/180;}
41 virtual void SetChildThetaRange(Float_t thetamin = 0, Float_t thetamax = 180)
42 {fChildThetaMin = TMath::Pi()*thetamin/180;
43 fChildThetaMax = TMath::Pi()*thetamax/180;}
44 virtual void SetChildYRange(Float_t ymin = -12, Float_t ymax = 12)
45 {fChildYMin = ymin;
46 fChildYMax = ymax;}
47 virtual void SetMaximumLifetime(Float_t time = 1.e-15) {fMaxLifeTime = time;}
48
49 virtual void SetGeometryAcceptance(AliGeometry * GeometryAcceptance=0) {fGeometryAcceptance = GeometryAcceptance;}
50
51 virtual void SetPdgCodeParticleforAcceptanceCut(Int_t PdgCodeParticleforAcceptanceCut=0) {fPdgCodeParticleforAcceptanceCut = PdgCodeParticleforAcceptanceCut;}
52
53 virtual void SetNumberOfAcceptedParticles(Int_t NumberOfAcceptedParticles=2) {fNumberOfAcceptedParticles = NumberOfAcceptedParticles;}
54
55 virtual Bool_t CheckAcceptanceGeometry(Int_t np, TClonesArray* particles);
56 virtual void SetProjectile(TString proj="P", Int_t a = 1, Int_t z = 1)
57 {fProjectile = proj; fAProjectile = a; fZProjectile = z;}
58 virtual void SetTarget(TString tar="P", Int_t a = 1, Int_t z = 1)
59 {fTarget = tar; fATarget = a; fZTarget = z;}
60 virtual void SetCrossingAngle(Float_t phiX, Float_t phiY) {fXingAngleX = phiX; fXingAngleY = phiY;}
61 virtual void Boost();
62 virtual void SetDyBoost(Double_t dyBoost = 0.) {fDyBoost = dyBoost;}
63 virtual void BeamCrossAngle();
64 virtual void AddHeader(AliGenEventHeader* header);
65
66 protected:
67 // check if particle is selected as parent particle
68 Bool_t ParentSelected(Int_t ip) const;
69 // check if particle is selected as child particle
70 Bool_t ChildSelected(Int_t ip) const;
71 // all kinematic selection cuts go here
72 Bool_t KinematicSelection(const TParticle *particle, Int_t flag) const;
73 Int_t CheckPDGCode(Int_t pdgcode) const;
74
75 protected:
76 TClonesArray fParticles; //!Particle List
77 TArrayI fParentSelect; //!Parent particles to be selected
78 TArrayI fChildSelect; //!Decay products to be selected
79 Int_t fCutOnChild; // Cuts on decay products (children) are enabled/disabled
80 Float_t fChildPtMin; // Children minimum pT
81 Float_t fChildPtMax; // Children maximum pT
82 Float_t fChildPMin; // Children minimum p
83 Float_t fChildPMax; // Children maximum p
84 Float_t fChildPhiMin; // Children minimum phi
85 Float_t fChildPhiMax; // Children maximum phi
86 Float_t fChildThetaMin; // Children minimum theta
87 Float_t fChildThetaMax; // Children maximum theta
88 Float_t fChildYMin; // Children minimum y
89 Float_t fChildYMax; // Children maximum y
90 Float_t fXingAngleX; // Crossing angle X
91 Float_t fXingAngleY; // Crossing angle Y
92 Decay_t fForceDecay; // Decay channel forced
93 Float_t fMaxLifeTime; // Maximum lifetime for unstable particles
94 Double_t fDyBoost; // dy for boost into lab frame
95 AliGeometry* fGeometryAcceptance; // Geometry to which particles must be simulated
96 Int_t fPdgCodeParticleforAcceptanceCut; // Abs(PDG Code) of the particle to which the GeometryAcceptance must be applied
97 Int_t fNumberOfAcceptedParticles; // Number of accepted particles in GeometryAcceptance with the right Abs(PdgCode)
98 Int_t fNprimaries; // Number of produced and stored particles
99
100 private:
101 AliGenMC(const AliGenMC &MC);
102 AliGenMC & operator=(const AliGenMC & rhs);
103
104 ClassDef(AliGenMC,7) // AliGenerator implementation for generators using MC methods
105};
106#endif
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