[u/mrichter/AliRoot.git] / TOF / AliTOFT0maker.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/
/* $Id: AliTOFT0maker.cxx,v 1.8 2010/01/19 16:32:20 noferini Exp $ */

/////////////////////////////////////////////////////////////////////////////
//                                                                         //
//  This class contains the basic functions for the time zero              //
//  evaluation with TOF detector informations.                             //
// Use case in an analysis task:                                           //
//                                                                         //
// Create the object in the task constructor (fTOFmaker is a private var)  //
// AliESDpid *extPID=new AliESDpid();                                      //
// fTOFmaker = new AliTOFT0maker(extPID);                                  //
// fTOFmaker->SetTimeResolution(100.0); // if you want set the TOF res     //
// 115 ps is the TOF default resolution value                              //
//                                                                         //
// Use the RemakePID method in the task::Exec                              //
// Double_t* calcolot0;                                                    //
// calcolot0=fTOFmaker->RemakePID(fESD);                                   //
// //calcolot0[0] = calculated event time                                  // 
// //calcolot0[1] = event time time resolution                             //
// //calcolot0[2] = average event time for the current fill                //
// //calcolot0[3] = tracks at TOF                                          // 
// //calcolot0[4] = calculated event time (only TOF)                       //
// //calcolot0[5] = event time time resolution (only TOF)                  //
// //calcolot0[6] = sigma t0 fill                                          //
// //calcolot0[7] = tracks at TOF really used in tht algorithm             // 
//                                                                         //
// Let consider that:                                                      //
// - the PIF is automatically recalculated with the event time subtrction  //
//                                                                         //
/////////////////////////////////////////////////////////////////////////////

#include "AliTOFT0v1.h"
#include "AliTOFT0maker.h"
#include "AliPID.h"
#include "AliESDpid.h"
#include "AliESDEvent.h"
#include "TFile.h"
#include "TH1F.h"
#include "AliTOFcalib.h"
#include "AliTOFRunParams.h"
#include "TRandom.h"

ClassImp(AliTOFT0maker)
           
//____________________________________________________________________________ 
AliTOFT0maker::AliTOFT0maker():
  TObject(),
  fT0TOF(NULL),
  fPIDesd(NULL),
  fExternalPIDFlag(kFALSE),
  fTOFcalib(NULL),
  fNoTOFT0(0),
  fNmomBins(0),
  fTimeResolution(100),
  fT0sigma(1000),
  fHmapChannel(0),
  fKmask(0),
  fT0width(150.),
  fT0spreadExt(-1.),
  fT0fillExt(0)
{
  // ctr
  fCalculated[0] = 0;
  fCalculated[1] = 0;
  fCalculated[2] = 0;
  fCalculated[3] = 0;

  if(AliPID::ParticleMass(0) == 0) new AliPID();

  fPIDesd = new AliESDpid();

  fNmomBins = fPIDesd->GetTOFResponse().GetNmomBins();
  SetTOFResponse();

  fT0TOF = new AliTOFT0v1(fPIDesd);

}
//____________________________________________________________________________ 
AliTOFT0maker::AliTOFT0maker(AliESDpid *externalPID, AliTOFcalib *tofCalib):
    TObject(),
    fT0TOF(NULL),
    fPIDesd(externalPID),
    fExternalPIDFlag(kTRUE),
    fTOFcalib(tofCalib),
    fNoTOFT0(0),
    fNmomBins(0),
    fTimeResolution(100),
    fT0sigma(1000),
    fHmapChannel(0),
    fKmask(0),
    fT0width(150.),
    fT0spreadExt(-1.),
    fT0fillExt(0)
{
  // ctr
  fCalculated[0] = 0;
  fCalculated[1] = 0;
  fCalculated[2] = 0;
  fCalculated[3] = 0;

  if(AliPID::ParticleMass(0) == 0) new AliPID();

  if(!fPIDesd){
    fPIDesd = new AliESDpid();
    fExternalPIDFlag = kFALSE;
  }

  fNmomBins = fPIDesd->GetTOFResponse().GetNmomBins();
  SetTOFResponse();

  fT0TOF = new AliTOFT0v1(fPIDesd);

}

//____________________________________________________________________________ 
AliTOFT0maker::~AliTOFT0maker()
{
  // dtor

  delete fT0TOF;
  if (!fExternalPIDFlag) delete fPIDesd;
}
//____________________________________________________________________________ 
Double_t* AliTOFT0maker::ComputeT0TOF(AliESDEvent *esd,Double_t t0time,Double_t t0sigma){
  //
  // Remake TOF PID probabilities
  //

  Double_t t0tof[6];

  if(fKmask) ApplyMask(esd);

  Double_t t0fill = 0.;

  fPIDesd->GetTOFResponse().ResetT0info();

  /* get T0 spread from TOFcalib if available otherwise use default value */
  if (fTOFcalib && esd) {
    AliTOFRunParams *runParams = fTOFcalib->GetRunParams();
    if (runParams && runParams->GetTimestamp(0) != 0) {
      Float_t t0spread = runParams->EvalT0Spread(esd->GetTimeStamp());
      if(fT0spreadExt > 0) SetT0FillWidth(fT0spreadExt);
      else{
	SetT0FillWidth(t0spread);
	t0fill = fT0fillExt;
      }
    }
    else{
      SetT0FillWidth(fT0spreadExt);
      t0fill = fT0fillExt;
    }
  }

  fT0TOF->Init(esd);
  AliTOFT0v1* t0maker= fT0TOF;

  t0maker->DefineT0("all",1.5,3.0);
  t0tof[0] = t0maker->GetResult(0);
  t0tof[1] = t0maker->GetResult(1);
  t0tof[2] = t0maker->GetResult(2);
  t0tof[3] = t0maker->GetResult(3);
  t0tof[4] = t0maker->GetResult(4);
  t0tof[5] = t0maker->GetResult(5);

  Float_t lT0Current=0.;
  fT0sigma=1000;

//   Int_t nrun = esd->GetRunNumber();

  t0time += t0fill;

  Float_t sigmaFill = fT0width;

  if(sigmaFill < 20) sigmaFill = 140;

  fCalculated[0]=-1000*t0tof[0]; // best t0
  fCalculated[1]=1000*t0tof[1]; // sigma best t0
  fCalculated[2] = t0fill;    //t0 fill
  fCalculated[3] = t0tof[2];  // n TOF tracks
  fCalculated[4]=-1000*t0tof[0]; // TOF t0
  fCalculated[5]=1000*t0tof[1]; // TOF t0 sigma
  fCalculated[6]=sigmaFill; // sigma t0 fill
  fCalculated[7] = t0tof[3];  // n TOF tracks used for T0

  //statistics
  fCalculated[8] = t0tof[4]; // real time in s
  fCalculated[9] = t0tof[5]; // cpu time in s

  if(fCalculated[1] < sigmaFill && TMath::Abs(fCalculated[0] - t0fill) < 500 && fCalculated[1] < fTimeResolution*1.2){
    fT0sigma=fCalculated[1];
    lT0Current=fCalculated[0];
  }
  else{
    fCalculated[4] = t0fill;
    fCalculated[5] = sigmaFill;
  }

  if(fCalculated[1] < 1 || fT0sigma > sigmaFill || fCalculated[1] > fTimeResolution* 1.2){
    fT0sigma =1000;
    fCalculated[4] = t0fill;
    fCalculated[5] = sigmaFill;
  }

  if(t0sigma < 1000){
    if(fT0sigma < 1000){
      Double_t w1 = 1./t0sigma/t0sigma;
      Double_t w2 = 1./fCalculated[1]/fCalculated[1];

      Double_t wtot = w1+w2;

      lT0Current = (w1*t0time + w2*fCalculated[0]) / wtot;
      fT0sigma = TMath::Sqrt(1./wtot);
    }
    else{
      lT0Current=t0time;
      fT0sigma=t0sigma;
    }
  }

  if(fT0sigma < sigmaFill && TMath::Abs(lT0Current - t0fill) < 500){
    fCalculated[1]=fT0sigma;
    fCalculated[0]=lT0Current;
  }

  if(fT0sigma >= 1000 || fNoTOFT0){
    lT0Current = t0fill;
    fT0sigma = sigmaFill;

    fCalculated[0] = t0fill;
    fCalculated[1] = sigmaFill;
  }

  // T0 pt bin
  if(fCalculated[7] < 100){
    for(Int_t i=0;i<fNmomBins;i++){
      t0maker->DefineT0("all",fPIDesd->GetTOFResponse().GetMinMom(i),fPIDesd->GetTOFResponse().GetMaxMom(i));
      t0tof[0] = t0maker->GetResult(0);
      t0tof[1] = t0maker->GetResult(1);
      t0tof[2] = t0maker->GetResult(2);
      t0tof[3] = t0maker->GetResult(3);
 

      Float_t t0bin =-1000*t0tof[0]; // best t0
      Float_t t0binRes =1000*t0tof[1]; // sigma best t0
      
      if(t0binRes < sigmaFill  && t0binRes < fTimeResolution * 1.2 && TMath::Abs(t0bin - t0fill) < 500){
	// Ok T0
	if(t0sigma < 1000){
	  Double_t w1 = 1./t0sigma/t0sigma;
	  Double_t w2 = 1./t0binRes/t0binRes;
	  
	  Double_t wtot = w1+w2;
	  
	  t0bin = (w1*t0time + w2*t0bin) / wtot;
	  t0binRes = TMath::Sqrt(1./wtot);
	}
      }
      else{
	t0bin = t0fill;
	t0binRes = sigmaFill;
	if(t0sigma < 1000){
	  t0bin = t0time;
	   t0binRes= t0sigma;	  
	}
      }
      fPIDesd->GetTOFResponse().SetT0bin(i,t0bin);
      fPIDesd->GetTOFResponse().SetT0binRes(i,t0binRes);
    }
  }
  else{
    for(Int_t i=0;i<fNmomBins;i++){
      fPIDesd->GetTOFResponse().SetT0bin(i,lT0Current);
      fPIDesd->GetTOFResponse().SetT0binRes(i,fT0sigma);
    }
  }

  return fCalculated;
}
//____________________________________________________________________________ 
Double_t  *AliTOFT0maker::GetT0p(Float_t p){// [0]=to -- [1] = sigma T0
  Int_t i=fPIDesd->GetTOFResponse().GetMomBin(p);
  
  fT0cur[0] = fPIDesd->GetTOFResponse().GetT0bin(i);
  fT0cur[1] = fPIDesd->GetTOFResponse().GetT0binRes(i);

  return fT0cur;
}
//____________________________________________________________________________ 
void AliTOFT0maker::SetTOFResponse(){
  fPIDesd->GetTOFResponse().SetTimeResolution(fTimeResolution);
}
//____________________________________________________________________________ 
Float_t AliTOFT0maker::GetExpectedSigma(Float_t mom, Float_t tof, Float_t mass){
  Float_t sigma = fPIDesd->GetTOFResponse().GetExpectedSigma(mom,tof,mass);

  return sigma;
}
//____________________________________________________________________________ 
void AliTOFT0maker::ApplyT0TOF(AliESDEvent *esd){
  //
  // Recalculate TOF PID probabilities
  //

  // subtruct t0 for each track
  Int_t ntracks = esd->GetNumberOfTracks();
  
  while (ntracks--) {
    AliESDtrack *t=esd->GetTrack(ntracks);
    
    if ((t->GetStatus()&AliESDtrack::kTOFout)==0) continue;
    
    Double_t time=t->GetTOFsignal();
    Float_t p = t->GetP();

    Double_t *t0=GetT0p(p);
    time -= t0[0];
    t->SetTOFsignal(time);
  }
  //
}
//____________________________________________________________________________ 
void  AliTOFT0maker::LoadChannelMap(char *filename){
  // Load the histo with the channel off map
  TFile *f= new TFile(filename);
  if(!f){
    printf("Cannot open the channel map file (%s)\n",filename);
    return;
  }
  
  fHmapChannel = (TH1F *) f->Get("hChEnabled");
  
  if(!fHmapChannel){
    printf("Cannot laod the channel map histo (from %s)\n",filename);
    return;
  }
    
}
//____________________________________________________________________________ 
void AliTOFT0maker::ApplyMask(AliESDEvent * const esd){
  // Switch off the disable channel
  if(!fHmapChannel){
    printf("Channel Map is not available\n");
    return;
  }
  
  Int_t ntracks = esd->GetNumberOfTracks();
  
  while (ntracks--) {
    AliESDtrack *t=esd->GetTrack(ntracks);    

    if ((t->GetStatus()&AliESDtrack::kTOFout)==0) continue;

    Int_t chan = t->GetTOFCalChannel();
 
    if(fHmapChannel->GetBinContent(chan) < 0.01){
      t->ResetStatus(AliESDtrack::kTOFout);
    }
  }
}

Float_t  
AliTOFT0maker::TuneForMC(AliESDEvent *esd){ // return true T0 event
  //
  // tune for MC data
  //

  Float_t TOFtimeResolutionDefault=80;

  Float_t t0 = gRandom->Gaus(0.,fT0width); 

  Float_t extraSmearing = 0;

  if(fTimeResolution > TOFtimeResolutionDefault){
    extraSmearing = TMath::Sqrt(fTimeResolution*fTimeResolution - TOFtimeResolutionDefault*TOFtimeResolutionDefault);
  }

  // subtruct t0 for each track
  Int_t ntracks = esd->GetNumberOfTracks();
  
  while (ntracks--) {
    AliESDtrack *t=esd->GetTrack(ntracks);
    
    if ((t->GetStatus()&AliESDtrack::kTOFout)==0) continue;
    
    /* check if channel is enabled */
    if (fTOFcalib && !fTOFcalib->IsChannelEnabled(t->GetTOFCalChannel())) {
      /* reset TOF status */
      t->ResetStatus(AliESDtrack::kTOFin);
      t->ResetStatus(AliESDtrack::kTOFout);
      t->ResetStatus(AliESDtrack::kTOFrefit);
      t->ResetStatus(AliESDtrack::kTOFpid);
    }

    Double_t time=t->GetTOFsignal();

    time += t0;

    if(extraSmearing>0){
      Float_t smearing = gRandom->Gaus(0.,extraSmearing);
      time += smearing;
    }

    t->SetTOFsignal(time);
  }
  //
  return t0;
}
Commit	Line	Data
8f589502	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
6a4e212e	15	/* $Id: AliTOFT0maker.cxx,v 1.8 2010/01/19 16:32:20 noferini Exp $ */
8f589502	16
	17	/////////////////////////////////////////////////////////////////////////////
	18	// //
	19	// This class contains the basic functions for the time zero //
6a4e212e	20	// evaluation with TOF detector informations. //
	21	// Use case in an analysis task: //
	22	// //
	23	// Create the object in the task constructor (fTOFmaker is a private var) //
5b4ed716	24	// AliESDpid *extPID=new AliESDpid(); //
	25	// fTOFmaker = new AliTOFT0maker(extPID); //
	26	// fTOFmaker->SetTimeResolution(100.0); // if you want set the TOF res //
6a4e212e	27	// 115 ps is the TOF default resolution value //
	28	// //
	29	// Use the RemakePID method in the task::Exec //
	30	// Double_t* calcolot0; //
	31	// calcolot0=fTOFmaker->RemakePID(fESD); //
	32	// //calcolot0[0] = calculated event time //
	33	// //calcolot0[1] = event time time resolution //
	34	// //calcolot0[2] = average event time for the current fill //
03bd764d	35	// //calcolot0[3] = tracks at TOF //
	36	// //calcolot0[4] = calculated event time (only TOF) //
	37	// //calcolot0[5] = event time time resolution (only TOF) //
	38	// //calcolot0[6] = sigma t0 fill //
	39	// //calcolot0[7] = tracks at TOF really used in tht algorithm //
6a4e212e	40	// //
	41	// Let consider that: //
	42	// - the PIF is automatically recalculated with the event time subtrction //
8f589502	43	// //
	44	/////////////////////////////////////////////////////////////////////////////
	45
536031f2	46	#include "AliTOFT0v1.h"
536031f2	47	#include "AliTOFT0maker.h"
536031f2	48	#include "AliPID.h"
536031f2	49	#include "AliESDpid.h"
03bd764d	50	#include "AliESDEvent.h"
	51	#include "TFile.h"
	52	#include "TH1F.h"
5b4ed716	53	#include "AliTOFcalib.h"
	54	#include "AliTOFRunParams.h"
	55	#include "TRandom.h"
536031f2	56
	57	ClassImp(AliTOFT0maker)
	58
	59	//____________________________________________________________________________
5b4ed716	60	AliTOFT0maker::AliTOFT0maker():
	61	TObject(),
	62	fT0TOF(NULL),
	63	fPIDesd(NULL),
	64	fExternalPIDFlag(kFALSE),
	65	fTOFcalib(NULL),
	66	fNoTOFT0(0),
2a258f40	67	fNmomBins(0),
5b4ed716	68	fTimeResolution(100),
	69	fT0sigma(1000),
	70	fHmapChannel(0),
	71	fKmask(0),
2a258f40	72	fT0width(150.),
	73	fT0spreadExt(-1.),
	74	fT0fillExt(0)
5b4ed716	75	{
	76	// ctr
	77	fCalculated[0] = 0;
	78	fCalculated[1] = 0;
	79	fCalculated[2] = 0;
	80	fCalculated[3] = 0;
	81
5b4ed716	82	if(AliPID::ParticleMass(0) == 0) new AliPID();
	83
	84	fPIDesd = new AliESDpid();
	85
2a258f40	86	fNmomBins = fPIDesd->GetTOFResponse().GetNmomBins();
	87	SetTOFResponse();
	88
	89	fT0TOF = new AliTOFT0v1(fPIDesd);
	90
5b4ed716	91	}
	92	//____________________________________________________________________________
	93	AliTOFT0maker::AliTOFT0maker(AliESDpid externalPID, AliTOFcalib tofCalib):
	94	TObject(),
	95	fT0TOF(NULL),
	96	fPIDesd(externalPID),
	97	fExternalPIDFlag(kTRUE),
	98	fTOFcalib(tofCalib),
03bd764d	99	fNoTOFT0(0),
2a258f40	100	fNmomBins(0),
5b4ed716	101	fTimeResolution(100),
03bd764d	102	fT0sigma(1000),
03bd764d	103	fHmapChannel(0),
5b4ed716	104	fKmask(0),
2a258f40	105	fT0width(150.),
	106	fT0spreadExt(-1.),
	107	fT0fillExt(0)
536031f2	108	{
6a4e212e	109	// ctr
6a4e212e	110	fCalculated[0] = 0;
	111	fCalculated[1] = 0;
	112	fCalculated[2] = 0;
03bd764d	113	fCalculated[3] = 0;
6a4e212e	114
536031f2	115	if(AliPID::ParticleMass(0) == 0) new AliPID();
03bd764d	116
5b4ed716	117	if(!fPIDesd){
	118	fPIDesd = new AliESDpid();
	119	fExternalPIDFlag = kFALSE;
	120	}
	121
2a258f40	122	fNmomBins = fPIDesd->GetTOFResponse().GetNmomBins();
2a258f40	123	SetTOFResponse();
5b4ed716	124
2a258f40	125	fT0TOF = new AliTOFT0v1(fPIDesd);
8f589502	126
8f589502	127	}
5b4ed716	128
8f589502	129	//____________________________________________________________________________
536031f2	130	AliTOFT0maker::~AliTOFT0maker()
	131	{
	132	// dtor
5b4ed716	133
	134	delete fT0TOF;
	135	if (!fExternalPIDFlag) delete fPIDesd;
536031f2	136	}
536031f2	137	//____________________________________________________________________________
5b4ed716	138	Double_t* AliTOFT0maker::ComputeT0TOF(AliESDEvent *esd,Double_t t0time,Double_t t0sigma){
8f589502	139	//
	140	// Remake TOF PID probabilities
	141	//
	142
2a258f40	143	Double_t t0tof[6];
536031f2	144
03bd764d	145	if(fKmask) ApplyMask(esd);
03bd764d	146
2a258f40	147	Double_t t0fill = 0.;
	148
	149	fPIDesd->GetTOFResponse().ResetT0info();
	150
5b4ed716	151	/* get T0 spread from TOFcalib if available otherwise use default value */
	152	if (fTOFcalib && esd) {
	153	AliTOFRunParams *runParams = fTOFcalib->GetRunParams();
	154	if (runParams && runParams->GetTimestamp(0) != 0) {
	155	Float_t t0spread = runParams->EvalT0Spread(esd->GetTimeStamp());
2a258f40	156	if(fT0spreadExt > 0) SetT0FillWidth(fT0spreadExt);
	157	else{
	158	SetT0FillWidth(t0spread);
	159	t0fill = fT0fillExt;
	160	}
	161	}
	162	else{
	163	SetT0FillWidth(fT0spreadExt);
	164	t0fill = fT0fillExt;
5b4ed716	165	}
536031f2	166	}
03bd764d	167
5b4ed716	168	fT0TOF->Init(esd);
5b4ed716	169	AliTOFT0v1* t0maker= fT0TOF;
5b4ed716	170
	171	t0maker->DefineT0("all",1.5,3.0);
	172	t0tof[0] = t0maker->GetResult(0);
	173	t0tof[1] = t0maker->GetResult(1);
	174	t0tof[2] = t0maker->GetResult(2);
	175	t0tof[3] = t0maker->GetResult(3);
2a258f40	176	t0tof[4] = t0maker->GetResult(4);
2a258f40	177	t0tof[5] = t0maker->GetResult(5);
536031f2	178
8f589502	179	Float_t lT0Current=0.;
536031f2	180	fT0sigma=1000;
536031f2	181
03bd764d	182	// Int_t nrun = esd->GetRunNumber();
5b4ed716	183
03bd764d	184	t0time += t0fill;
8f589502	185
5b4ed716	186	Float_t sigmaFill = fT0width;
	187
	188	if(sigmaFill < 20) sigmaFill = 140;
8f589502	189
03bd764d	190	fCalculated[0]=-1000*t0tof[0]; // best t0
	191	fCalculated[1]=1000*t0tof[1]; // sigma best t0
	192	fCalculated[2] = t0fill; //t0 fill
	193	fCalculated[3] = t0tof[2]; // n TOF tracks
	194	fCalculated[4]=-1000*t0tof[0]; // TOF t0
	195	fCalculated[5]=1000*t0tof[1]; // TOF t0 sigma
	196	fCalculated[6]=sigmaFill; // sigma t0 fill
	197	fCalculated[7] = t0tof[3]; // n TOF tracks used for T0
	198
2a258f40	199	//statistics
	200	fCalculated[8] = t0tof[4]; // real time in s
	201	fCalculated[9] = t0tof[5]; // cpu time in s
	202
5b4ed716	203	if(fCalculated[1] < sigmaFill && TMath::Abs(fCalculated[0] - t0fill) < 500 && fCalculated[1] < fTimeResolution*1.2){
6a4e212e	204	fT0sigma=fCalculated[1];
6a4e212e	205	lT0Current=fCalculated[0];
536031f2	206	}
03bd764d	207	else{
	208	fCalculated[4] = t0fill;
	209	fCalculated[5] = sigmaFill;
	210	}
	211
5b4ed716	212	if(fCalculated[1] < 1 \|\| fT0sigma > sigmaFill \|\| fCalculated[1] > fTimeResolution* 1.2){
03bd764d	213	fT0sigma =1000;
	214	fCalculated[4] = t0fill;
	215	fCalculated[5] = sigmaFill;
	216	}
536031f2	217
	218	if(t0sigma < 1000){
	219	if(fT0sigma < 1000){
	220	Double_t w1 = 1./t0sigma/t0sigma;
6a4e212e	221	Double_t w2 = 1./fCalculated[1]/fCalculated[1];
536031f2	222
	223	Double_t wtot = w1+w2;
	224
6a4e212e	225	lT0Current = (w1t0time + w2fCalculated[0]) / wtot;
536031f2	226	fT0sigma = TMath::Sqrt(1./wtot);
	227	}
	228	else{
8f589502	229	lT0Current=t0time;
536031f2	230	fT0sigma=t0sigma;
	231	}
	232	}
	233
03bd764d	234	if(fT0sigma < sigmaFill && TMath::Abs(lT0Current - t0fill) < 500){
	235	fCalculated[1]=fT0sigma;
	236	fCalculated[0]=lT0Current;
	237	}
	238
	239	if(fT0sigma >= 1000 \|\| fNoTOFT0){
8f589502	240	lT0Current = t0fill;
03bd764d	241	fT0sigma = sigmaFill;
8f589502	242
6a4e212e	243	fCalculated[0] = t0fill;
03bd764d	244	fCalculated[1] = sigmaFill;
536031f2	245	}
536031f2	246
5b4ed716	247	// T0 pt bin
2a258f40	248	if(fCalculated[7] < 100){
	249	for(Int_t i=0;i<fNmomBins;i++){
	250	t0maker->DefineT0("all",fPIDesd->GetTOFResponse().GetMinMom(i),fPIDesd->GetTOFResponse().GetMaxMom(i));
	251	t0tof[0] = t0maker->GetResult(0);
	252	t0tof[1] = t0maker->GetResult(1);
	253	t0tof[2] = t0maker->GetResult(2);
	254	t0tof[3] = t0maker->GetResult(3);
	255
	256
	257	Float_t t0bin =-1000*t0tof[0]; // best t0
	258	Float_t t0binRes =1000*t0tof[1]; // sigma best t0
	259
	260	if(t0binRes < sigmaFill && t0binRes < fTimeResolution * 1.2 && TMath::Abs(t0bin - t0fill) < 500){
	261	// Ok T0
	262	if(t0sigma < 1000){
	263	Double_t w1 = 1./t0sigma/t0sigma;
	264	Double_t w2 = 1./t0binRes/t0binRes;
	265
	266	Double_t wtot = w1+w2;
	267
	268	t0bin = (w1t0time + w2t0bin) / wtot;
	269	t0binRes = TMath::Sqrt(1./wtot);
	270	}
	271	}
	272	else{
	273	t0bin = t0fill;
	274	t0binRes = sigmaFill;
	275	if(t0sigma < 1000){
	276	t0bin = t0time;
	277	t0binRes= t0sigma;
	278	}
	279	}
	280	fPIDesd->GetTOFResponse().SetT0bin(i,t0bin);
	281	fPIDesd->GetTOFResponse().SetT0binRes(i,t0binRes);
5b4ed716	282	}
2a258f40	283	}
	284	else{
	285	for(Int_t i=0;i<fNmomBins;i++){
	286	fPIDesd->GetTOFResponse().SetT0bin(i,lT0Current);
	287	fPIDesd->GetTOFResponse().SetT0binRes(i,fT0sigma);
5b4ed716	288	}
5b4ed716	289	}
536031f2	290
6a4e212e	291	return fCalculated;
536031f2	292	}
536031f2	293	//____________________________________________________________________________
5b4ed716	294	Double_t *AliTOFT0maker::GetT0p(Float_t p){// [0]=to -- [1] = sigma T0
2a258f40	295	Int_t i=fPIDesd->GetTOFResponse().GetMomBin(p);
03bd764d	296
2a258f40	297	fT0cur[0] = fPIDesd->GetTOFResponse().GetT0bin(i);
	298	fT0cur[1] = fPIDesd->GetTOFResponse().GetT0binRes(i);
	299
5b4ed716	300	return fT0cur;
536031f2	301	}
536031f2	302	//____________________________________________________________________________
5b4ed716	303	void AliTOFT0maker::SetTOFResponse(){
2a258f40	304	fPIDesd->GetTOFResponse().SetTimeResolution(fTimeResolution);
5b4ed716	305	}
	306	//____________________________________________________________________________
	307	Float_t AliTOFT0maker::GetExpectedSigma(Float_t mom, Float_t tof, Float_t mass){
5b4ed716	308	Float_t sigma = fPIDesd->GetTOFResponse().GetExpectedSigma(mom,tof,mass);
8f589502	309
5b4ed716	310	return sigma;
536031f2	311	}
536031f2	312	//____________________________________________________________________________
5b4ed716	313	void AliTOFT0maker::ApplyT0TOF(AliESDEvent *esd){
8f589502	314	//
5b4ed716	315	// Recalculate TOF PID probabilities
8f589502	316	//
8f589502	317
5b4ed716	318	// subtruct t0 for each track
5b4ed716	319	Int_t ntracks = esd->GetNumberOfTracks();
536031f2	320
5b4ed716	321	while (ntracks--) {
5b4ed716	322	AliESDtrack *t=esd->GetTrack(ntracks);
03bd764d	323
5b4ed716	324	if ((t->GetStatus()&AliESDtrack::kTOFout)==0) continue;
	325
	326	Double_t time=t->GetTOFsignal();
	327	Float_t p = t->GetP();
03bd764d	328
5b4ed716	329	Double_t *t0=GetT0p(p);
	330	time -= t0[0];
	331	t->SetTOFsignal(time);
03bd764d	332	}
5b4ed716	333	//
536031f2	334	}
03bd764d	335	//____________________________________________________________________________
	336	void AliTOFT0maker::LoadChannelMap(char *filename){
	337	// Load the histo with the channel off map
	338	TFile *f= new TFile(filename);
	339	if(!f){
	340	printf("Cannot open the channel map file (%s)\n",filename);
	341	return;
	342	}
	343
	344	fHmapChannel = (TH1F *) f->Get("hChEnabled");
	345
	346	if(!fHmapChannel){
	347	printf("Cannot laod the channel map histo (from %s)\n",filename);
	348	return;
	349	}
	350
	351	}
	352	//____________________________________________________________________________
	353	void AliTOFT0maker::ApplyMask(AliESDEvent * const esd){
	354	// Switch off the disable channel
	355	if(!fHmapChannel){
	356	printf("Channel Map is not available\n");
	357	return;
	358	}
	359
	360	Int_t ntracks = esd->GetNumberOfTracks();
	361
	362	while (ntracks--) {
	363	AliESDtrack *t=esd->GetTrack(ntracks);
	364
	365	if ((t->GetStatus()&AliESDtrack::kTOFout)==0) continue;
	366
	367	Int_t chan = t->GetTOFCalChannel();
	368
	369	if(fHmapChannel->GetBinContent(chan) < 0.01){
	370	t->ResetStatus(AliESDtrack::kTOFout);
	371	}
	372	}
	373	}
	374
5b4ed716	375	Float_t
	376	AliTOFT0maker::TuneForMC(AliESDEvent *esd){ // return true T0 event
	377	//
	378	// tune for MC data
	379	//
	380
	381	Float_t TOFtimeResolutionDefault=80;
	382
	383	Float_t t0 = gRandom->Gaus(0.,fT0width);
	384
	385	Float_t extraSmearing = 0;
	386
	387	if(fTimeResolution > TOFtimeResolutionDefault){
	388	extraSmearing = TMath::Sqrt(fTimeResolutionfTimeResolution - TOFtimeResolutionDefaultTOFtimeResolutionDefault);
	389	}
	390
	391	// subtruct t0 for each track
	392	Int_t ntracks = esd->GetNumberOfTracks();
	393
	394	while (ntracks--) {
	395	AliESDtrack *t=esd->GetTrack(ntracks);
	396
	397	if ((t->GetStatus()&AliESDtrack::kTOFout)==0) continue;
	398
	399	/* check if channel is enabled */
	400	if (fTOFcalib && !fTOFcalib->IsChannelEnabled(t->GetTOFCalChannel())) {
	401	/* reset TOF status */
	402	t->ResetStatus(AliESDtrack::kTOFin);
	403	t->ResetStatus(AliESDtrack::kTOFout);
	404	t->ResetStatus(AliESDtrack::kTOFrefit);
	405	t->ResetStatus(AliESDtrack::kTOFpid);
	406	}
	407
	408	Double_t time=t->GetTOFsignal();
	409
	410	time += t0;
	411
	412	if(extraSmearing>0){
	413	Float_t smearing = gRandom->Gaus(0.,extraSmearing);
	414	time += smearing;
	415	}
	416
	417	t->SetTOFsignal(time);
	418	}
	419	//
	420	return t0;
	421	}