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[u/mrichter/AliRoot.git] / EVGEN / AliGenMC.h

diff --git a/EVGEN/AliGenMC.h b/EVGEN/AliGenMC.h
index 28dd0d7b0b54972f190692d9a024681b88dfc0b7..b8adea6129ff1110d51f6823db1324a5e400527d 100644 (file)
--- a/EVGEN/AliGenMC.h
+++ b/EVGEN/AliGenMC.h
@@ -6,9 +6,18 @@
 /* $Id$ */
 
 
+// Base class for generators using external MC generators.
+// For example AliGenPythia using Pythia.
+// Provides basic functionality: setting of kinematic cuts on 
+// decay products and particle selection.
+// andreas.morsch@cern.ch
+
 #include "AliGenerator.h"
 #include "AliDecayer.h"
-#include <TArrayI.h>    
+#include "AliGeometry.h"
+#include <TArrayI.h>   
+#include <TClonesArray.h>
+#include <TString.h>
 
 class TParticle;
 
@@ -19,7 +28,7 @@ class AliGenMC : public AliGenerator
     AliGenMC(Int_t npart);
     AliGenMC(const AliGenMC &MC);
     virtual ~AliGenMC();
-    void Init();
+    virtual void Init();
     virtual void SetForceDecay(Decay_t decay = kAll) {fForceDecay = decay;}
     AliGenMC & operator=(const AliGenMC & rhs);
         virtual void SetCutOnChild(Int_t flag = 0) {fCutOnChild = flag;}
@@ -27,7 +36,7 @@ class AliGenMC : public AliGenerator
        {fChildPMin = pmin; fChildPMax = pmax;}
     virtual void SetChildPtRange(Float_t ptmin = 0, Float_t ptmax = 20.)
        {fChildPtMin = ptmin; fChildPtMax = ptmax;}
-    virtual void SetChildPhiRange(Float_t phimin = -180., Float_t phimax = 180)
+    virtual void SetChildPhiRange(Float_t phimin = 0., Float_t phimax = 360.)
        {fChildPhiMin = TMath::Pi()*phimin/180;
        fChildPhiMax  = TMath::Pi()*phimax/180;}
     virtual void SetChildThetaRange(Float_t thetamin = 0, Float_t thetamax = 180)
@@ -36,19 +45,34 @@ class AliGenMC : public AliGenerator
     virtual void SetChildYRange(Float_t ymin = -12, Float_t ymax = 12)
        {fChildYMin = ymin;
        fChildYMax  = ymax;}
+    virtual void SetMaximumLifetime(Float_t time = 1.e-15) {fMaxLifeTime = time;}
+   
+    virtual void SetGeometryAcceptance(AliGeometry * GeometryAcceptance=0) {fGeometryAcceptance = GeometryAcceptance;}
+
+    virtual void SetPdgCodeParticleforAcceptanceCut(Int_t PdgCodeParticleforAcceptanceCut=0) {fPdgCodeParticleforAcceptanceCut = PdgCodeParticleforAcceptanceCut;}
+
+    virtual void SetNumberOfAcceptedParticles(Int_t NumberOfAcceptedParticles=2) {fNumberOfAcceptedParticles = NumberOfAcceptedParticles;}
+    
+    virtual Bool_t CheckAcceptanceGeometry(Int_t np, TClonesArray* particles);
+    virtual void   SetProjectile(TString proj="P", Int_t a = 1, Int_t z = 1)
+       {fProjectile = proj; fAProjectile = a; fZProjectile = z;}    
+    virtual void   SetTarget(TString tar="P", Int_t a = 1, Int_t z = 1)
+       {fTarget = tar; fATarget = a; fZTarget = z;}    
+    virtual void Boost();
 
  protected:
     // check if particle is selected as parent particle
-    Bool_t ParentSelected(Int_t ip);
+    Bool_t ParentSelected(Int_t ip) const;
     // check if particle is selected as child particle
-    Bool_t ChildSelected(Int_t ip);
+    Bool_t ChildSelected(Int_t ip) const;
     // all kinematic selection cuts go here 
-    Bool_t KinematicSelection(TParticle *particle, Int_t flag);
-    Int_t  CheckPDGCode(Int_t pdgcode);
-
+    Bool_t KinematicSelection(TParticle *particle, Int_t flag) const;
+    Int_t  CheckPDGCode(Int_t pdgcode) const;
+    void Copy(TObject&) const;
  protected:
-    TArrayI     fParentSelect;  // Parent particles to be selected 
-    TArrayI     fChildSelect;   // Decay products to be selected
+    TClonesArray* fParticles;   //!Particle  List
+    TArrayI     fParentSelect;  //!Parent particles to be selected 
+    TArrayI     fChildSelect;   //!Decay products to be selected
     Int_t       fCutOnChild;    // Cuts on decay products (children)  are enabled/disabled
     Float_t     fChildPtMin;    // Children minimum pT
     Float_t     fChildPtMax;    // Children maximum pT
@@ -61,8 +85,19 @@ class AliGenMC : public AliGenerator
     Float_t     fChildYMin;     // Children minimum y
     Float_t     fChildYMax;     // Children maximum y
     Decay_t     fForceDecay;    // Decay channel forced
-       
-    ClassDef(AliGenMC,1)       // AliGenerator implementation for generators using MC methods
+    Float_t     fMaxLifeTime;   // Maximum lifetime for unstable particles
+    Int_t       fAProjectile;   // Projectile A
+    Int_t       fZProjectile;   // Projectile Z
+    Int_t       fATarget;       // Target A
+    Int_t       fZTarget;       // Target Z
+    TString     fProjectile;    // Projectile
+    TString     fTarget;        // Target
+    Double_t    fDyBoost;       // dy for boost into lab frame
+    AliGeometry * fGeometryAcceptance; // Geometry to which particles must be simulated
+    Int_t       fPdgCodeParticleforAcceptanceCut;  // Abs(PDG Code) of the particle to which the GeometryAcceptance must be applied
+    Int_t       fNumberOfAcceptedParticles;  // Number of accepted particles in GeometryAcceptance with the right Abs(PdgCode) 
+    
+    ClassDef(AliGenMC,5)       // AliGenerator implementation for generators using MC methods
 };
 #endif