+ virtual void Init();
+ virtual Int_t IsVersion() const = 0;
+ virtual void ResetDigits();
+
+ virtual void CreateGeometry();
+ virtual void CreateMaterials();
+
+ virtual void Hits2Digits();
+ virtual void Hits2SDigits();
+ virtual void SDigits2Digits();
+ virtual void Digits2Raw();
+ virtual Bool_t Raw2SDigits(AliRawReader* rawReader);
+
+ virtual void AddHit(Int_t, Int_t*, Float_t*) { };
+ virtual void AddHit(Int_t track, Int_t det, Float_t *hits
+ , Int_t q, Float_t time, Bool_t inDrift);
+
+ virtual void SetTreeAddress();
+
+ virtual void StepManager() = 0;
+
+ virtual void SetStepSize(Double_t s) = 0;
+ virtual void SetHits() { };
+ virtual void SetTR(Bool_t ) = 0;
+
+ virtual Bool_t GetTR() const = 0;
+
+ AliTRDgeometry *GetGeometry() const { return fGeometry; };
+ virtual AliDigitizer *CreateDigitizer(AliRunDigitizer *manager) const;
+ virtual AliLoader *MakeLoader(const char* topfoldername);
+ virtual AliTriggerDetector *CreateTriggerDetector() const { return new AliTRDTrigger(); }
+ void SetPrimaryIonisation(Bool_t flag = kTRUE) {fPrimaryIonisation = flag;}
+ protected:
+
+ AliTRDgeometry *fGeometry; // The TRD geometry
+
+ Float_t fGasDensity; // The density of the drift gas
+ Float_t fFoilDensity; // The density of the entrance window foil
+ Float_t fGasNobleFraction; // The fraction of noble gas in the mixture
+ Bool_t fPrimaryIonisation; // switch between Fluka(true) and geant3(false)
+ private:
+
+ AliTRD(const AliTRD &trd);
+ AliTRD &operator=(const AliTRD &trd);