[u/mrichter/AliRoot.git] / TRD / AliTRDpidUtil.h

#ifndef ALITRDPIDUTIL_H
#define ALITRDPIDUTIL_H

//////////////////////////////////////////////////////
//
// Class to calculate PID performance of the TRD
//
// Author : Alex Wilk <wilka@uni-muenster.de>
//
///////////////////////////////////////////////////////

class TH1;
class AliESDtrack;
class AliTRDpidUtil : public TObject {
public:
  enum {
    kBins = 10001
  };
  enum ETRDPIDMethod {
     kLQ   = 0 // 2D likelihood method
    ,kNN   = 1 // Neural network method
    ,kESD  = 2 // ESD results - check offline
  };
  enum{
    kNNslices = 8
   ,kLQslices = 3
  };

  AliTRDpidUtil();
  virtual ~AliTRDpidUtil(){;}

  Bool_t       CalculatePionEffi(TH1* histo1, TH1* histo2);

  static Float_t  ElectronEfficiency()   { return fgEleEffi;};
  
  static Bool_t   IsElectron(const AliESDtrack *track, ETRDPIDMethod method = kNN);
  static Double_t GetSystematicError(const AliESDtrack *track, ETRDPIDMethod method = kNN);
  static Int_t GetNdEdxSlices(ETRDPIDMethod m)   { return m == kNN ? kNNslices : kLQslices;}
  Double_t     GetCalcElectronEfficiency() const { return fCalcEleEffi;};
  Double_t     GetPionEfficiency() const { return fPionEffi;};
  Double_t     GetError() const          { return fError;};
  Double_t     GetThreshold() const      { return fThreshold;};

  static Int_t GetMomentumBin(Double_t p);
  static Int_t Pdg2Pid(Int_t pdg);
  static void  SetElectronEfficiency(Float_t eleeffi) {fgEleEffi = eleeffi;};

private:
  AliTRDpidUtil(const AliTRDpidUtil&);               // not implemented
  AliTRDpidUtil& operator=(const AliTRDpidUtil&);    // not implemented

  static Float_t fgEleEffi;               // electron efficiency

  Double_t fCalcEleEffi;                 // electron efficiency after calculation
  Double_t fPionEffi;                    // pion efficiency 
  Double_t fError;                       // pion efficiency error
  Double_t fThreshold;                   // threshold for calculated electron efficiency

  ClassDef(AliTRDpidUtil, 1)  // TRD PID efficiency calculator

};

#endif
Commit	Line	Data
	1	#ifndef ALITRDPIDUTIL_H
	2	#define ALITRDPIDUTIL_H
	3
	4	//////////////////////////////////////////////////////
	5	//
	6	// Class to calculate PID performance of the TRD
	7	//
	8	// Author : Alex Wilk <wilka@uni-muenster.de>
	9	//
	10	///////////////////////////////////////////////////////
	11
	12	class TH1;
	13	class AliESDtrack;
	14	class AliTRDpidUtil : public TObject {
	15	public:
	16	enum {
	17	kBins = 10001
	18	};
	19	enum ETRDPIDMethod {
	20	kLQ = 0 // 2D likelihood method
	21	,kNN = 1 // Neural network method
	22	,kESD = 2 // ESD results - check offline
	23	};
	24	enum{
	25	kNNslices = 8
	26	,kLQslices = 3
	27	};
	28
	29	AliTRDpidUtil();
	30	virtual ~AliTRDpidUtil(){;}
	31
	32	Bool_t CalculatePionEffi(TH1* histo1, TH1* histo2);
	33
	34	static Float_t ElectronEfficiency() { return fgEleEffi;};
	35
	36	static Bool_t IsElectron(const AliESDtrack *track, ETRDPIDMethod method = kNN);
	37	static Double_t GetSystematicError(const AliESDtrack *track, ETRDPIDMethod method = kNN);
	38	static Int_t GetNdEdxSlices(ETRDPIDMethod m) { return m == kNN ? kNNslices : kLQslices;}
	39	Double_t GetCalcElectronEfficiency() const { return fCalcEleEffi;};
	40	Double_t GetPionEfficiency() const { return fPionEffi;};
	41	Double_t GetError() const { return fError;};
	42	Double_t GetThreshold() const { return fThreshold;};
	43
	44	static Int_t GetMomentumBin(Double_t p);
	45	static Int_t Pdg2Pid(Int_t pdg);
	46	static void SetElectronEfficiency(Float_t eleeffi) {fgEleEffi = eleeffi;};
	47
	48	private:
	49	AliTRDpidUtil(const AliTRDpidUtil&); // not implemented
	50	AliTRDpidUtil& operator=(const AliTRDpidUtil&); // not implemented
	51
	52	static Float_t fgEleEffi; // electron efficiency
	53
	54	Double_t fCalcEleEffi; // electron efficiency after calculation
	55	Double_t fPionEffi; // pion efficiency
	56	Double_t fError; // pion efficiency error
	57	Double_t fThreshold; // threshold for calculated electron efficiency
	58
	59	ClassDef(AliTRDpidUtil, 1) // TRD PID efficiency calculator
	60
	61	};
	62
	63	#endif