[u/mrichter/AliRoot.git] / STEER / AliPIDResponse.h

#ifndef ALIPIDRESPONSE_H
#define ALIPIDRESPONSE_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

//---------------------------------------------------------------//
//        Base class for handling the pid response               //
//        functions of all detectors                             //
//        and give access to the nsigmas                         //
//                                                               //
//   Origin: Jens Wiechula, Uni Tuebingen, jens.wiechula@cern.ch //
//---------------------------------------------------------------//

#include "AliITSPIDResponse.h"
#include "AliTPCPIDResponse.h"
#include "AliTRDPIDResponse.h"
#include "AliTOFPIDResponse.h"

#include "AliVParticle.h"
#include "AliVTrack.h"

#include "TNamed.h"

class AliVEvent;
class TF1;

class AliPIDResponse : public TNamed {
public:
  AliPIDResponse(Bool_t isMC=kFALSE);
  virtual ~AliPIDResponse();

  enum EStartTimeType_t {kFILL_T0,kTOF_T0, kT0_T0, kBest_T0};
  
  AliITSPIDResponse &GetITSResponse() {return fITSResponse;}
  AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;}
  AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;}
  AliTRDPIDResponse &GetTRDResponse() {return fTRDResponse;}
  
  virtual Float_t NumberOfSigmasITS(const AliVParticle *track, AliPID::EParticleType type) const;
  virtual Float_t NumberOfSigmasTPC(const AliVParticle *track, AliPID::EParticleType type) const;
  virtual Float_t NumberOfSigmasTOF(const AliVParticle *track, AliPID::EParticleType type) const = 0;

  virtual void SetTOFResponse(AliVEvent */*event*/,EStartTimeType_t /*option*/) {;}

  void SetOADBPath(const char* path) {fOADBPath=path;}
  void InitialiseEvent(AliVEvent *event, Int_t pass);

  AliPIDResponse(const AliPIDResponse &other);
  AliPIDResponse& operator=(const AliPIDResponse &other);
  
protected:
  AliITSPIDResponse fITSResponse;    //PID response function of the ITS
  AliTPCPIDResponse fTPCResponse;    //PID response function of the TPC
  AliTRDPIDResponse fTRDResponse;    //PID response function of the TRD
  AliTOFPIDResponse fTOFResponse;    //PID response function of the TOF

private:
  Bool_t fIsMC;                        //  If we run on MC data

  TString fOADBPath;                   // OADB path to use
  
  TString fBeamType;                   //! beam type (PP) or (PBPB)
  TString fLHCperiod;                  //! LHC period
  TString fMCperiodTPC;                //! corresponding MC period to use for the TPC splines
  Int_t   fRecoPass;                   //! reconstruction pass
  Int_t   fRun;                        //! current run number
  Int_t   fOldRun;                     //! current run number

  TObjArray *fArrPidResponseMaster;    //!  TPC pid splines
  TF1       *fResolutionCorrection;    //! TPC resolution correction

  Int_t   fTOFTimeZeroType;            //! default start time type for tof (ESD)
  Float_t fTOFres;                     //! TOF resolution
  
  void ExecNewRun();
  
  //
  //setup parametrisations
  //

  //ITS
  void SetITSParametrisation();
  
  //TPC
  void SetTPCPidResponseMaster();
  void SetTPCParametrisation();
  Double_t GetTPCMultiplicityBin(const AliVEvent * const event);

  //TOF
  
  //
  void SetRecoInfo();
  
  ClassDef(AliPIDResponse,2);  //PID response handling
};

inline Float_t AliPIDResponse::NumberOfSigmasTPC(const AliVParticle *vtrack, AliPID::EParticleType type) const {
  AliVTrack *track=(AliVTrack*)vtrack;
  Double_t mom  = track->GetTPCmomentum();
  Double_t sig  = track->GetTPCsignal();
  UInt_t   sigN = track->GetTPCsignalN();

  Double_t nSigma = -999.;
  if (sigN>0) nSigma=fTPCResponse.GetNumberOfSigmas(mom,sig,sigN,type);

  return nSigma;
}

inline Float_t AliPIDResponse::NumberOfSigmasITS(const AliVParticle *vtrack, AliPID::EParticleType type) const {
  AliVTrack *track=(AliVTrack*)vtrack;
  Float_t dEdx=track->GetITSsignal();
  if (dEdx<=0) return -999.;
  
  UChar_t clumap=track->GetITSClusterMap();
  Int_t nPointsForPid=0;
  for(Int_t i=2; i<6; i++){
    if(clumap&(1<<i)) ++nPointsForPid;
  }
  Float_t mom=track->P();
  Bool_t isSA=kTRUE;
  if(track->GetTPCNcls()>0) isSA=kFALSE;
  return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,isSA);
}

#endif
Commit	Line	Data
29bf19f2	1	#ifndef ALIPIDRESPONSE_H
	2	#define ALIPIDRESPONSE_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	//---------------------------------------------------------------//
	7	// Base class for handling the pid response //
	8	// functions of all detectors //
	9	// and give access to the nsigmas //
	10	// //
	11	// Origin: Jens Wiechula, Uni Tuebingen, jens.wiechula@cern.ch //
	12	//---------------------------------------------------------------//
	13
	14	#include "AliITSPIDResponse.h"
	15	#include "AliTPCPIDResponse.h"
	16	#include "AliTRDPIDResponse.h"
	17	#include "AliTOFPIDResponse.h"
	18
	19	#include "AliVParticle.h"
	20	#include "AliVTrack.h"
	21
	22	#include "TNamed.h"
	23
	24	class AliVEvent;
4ec8e76d	25	class TF1;
29bf19f2	26
	27	class AliPIDResponse : public TNamed {
	28	public:
4ec8e76d	29	AliPIDResponse(Bool_t isMC=kFALSE);
4ec8e76d	30	virtual ~AliPIDResponse();
29bf19f2	31
	32	enum EStartTimeType_t {kFILL_T0,kTOF_T0, kT0_T0, kBest_T0};
	33
	34	AliITSPIDResponse &GetITSResponse() {return fITSResponse;}
	35	AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;}
	36	AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;}
	37	AliTRDPIDResponse &GetTRDResponse() {return fTRDResponse;}
	38
	39	virtual Float_t NumberOfSigmasITS(const AliVParticle *track, AliPID::EParticleType type) const;
	40	virtual Float_t NumberOfSigmasTPC(const AliVParticle *track, AliPID::EParticleType type) const;
	41	virtual Float_t NumberOfSigmasTOF(const AliVParticle *track, AliPID::EParticleType type) const = 0;
	42
4ec8e76d	43	virtual void SetTOFResponse(AliVEvent /event/,EStartTimeType_t /option*/) {;}
	44
	45	void SetOADBPath(const char* path) {fOADBPath=path;}
	46	void InitialiseEvent(AliVEvent *event, Int_t pass);
	47
	48	AliPIDResponse(const AliPIDResponse &other);
	49	AliPIDResponse& operator=(const AliPIDResponse &other);
29bf19f2	50
	51	protected:
	52	AliITSPIDResponse fITSResponse; //PID response function of the ITS
	53	AliTPCPIDResponse fTPCResponse; //PID response function of the TPC
	54	AliTRDPIDResponse fTRDResponse; //PID response function of the TRD
	55	AliTOFPIDResponse fTOFResponse; //PID response function of the TOF
4ec8e76d	56
	57	private:
	58	Bool_t fIsMC; // If we run on MC data
	59
	60	TString fOADBPath; // OADB path to use
	61
	62	TString fBeamType; //! beam type (PP) or (PBPB)
	63	TString fLHCperiod; //! LHC period
	64	TString fMCperiodTPC; //! corresponding MC period to use for the TPC splines
	65	Int_t fRecoPass; //! reconstruction pass
	66	Int_t fRun; //! current run number
	67	Int_t fOldRun; //! current run number
	68
	69	TObjArray *fArrPidResponseMaster; //! TPC pid splines
	70	TF1 *fResolutionCorrection; //! TPC resolution correction
	71
	72	Int_t fTOFTimeZeroType; //! default start time type for tof (ESD)
	73	Float_t fTOFres; //! TOF resolution
	74
	75	void ExecNewRun();
	76
	77	//
	78	//setup parametrisations
	79	//
	80
	81	//ITS
	82	void SetITSParametrisation();
	83
	84	//TPC
	85	void SetTPCPidResponseMaster();
	86	void SetTPCParametrisation();
	87	Double_t GetTPCMultiplicityBin(const AliVEvent * const event);
	88
	89	//TOF
	90
	91	//
	92	void SetRecoInfo();
29bf19f2	93
4ec8e76d	94	ClassDef(AliPIDResponse,2); //PID response handling
29bf19f2	95	};
	96
	97	inline Float_t AliPIDResponse::NumberOfSigmasTPC(const AliVParticle *vtrack, AliPID::EParticleType type) const {
	98	AliVTrack track=(AliVTrack)vtrack;
	99	Double_t mom = track->GetTPCmomentum();
	100	Double_t sig = track->GetTPCsignal();
	101	UInt_t sigN = track->GetTPCsignalN();
	102
	103	Double_t nSigma = -999.;
	104	if (sigN>0) nSigma=fTPCResponse.GetNumberOfSigmas(mom,sig,sigN,type);
	105
	106	return nSigma;
	107	}
	108
	109	inline Float_t AliPIDResponse::NumberOfSigmasITS(const AliVParticle *vtrack, AliPID::EParticleType type) const {
	110	AliVTrack track=(AliVTrack)vtrack;
	111	Float_t dEdx=track->GetITSsignal();
	112	if (dEdx<=0) return -999.;
	113
	114	UChar_t clumap=track->GetITSClusterMap();
	115	Int_t nPointsForPid=0;
	116	for(Int_t i=2; i<6; i++){
	117	if(clumap&(1<<i)) ++nPointsForPid;
	118	}
	119	Float_t mom=track->P();
	120	Bool_t isSA=kTRUE;
	121	if(track->GetTPCNcls()>0) isSA=kFALSE;
	122	return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,isSA);
	123	}
	124
	125	#endif