[u/mrichter/AliRoot.git] / T0 / AliT0Digitizer.cxx


/**************************************************************************
 * Copyright(c) 1998-2000, 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.                  *
 **************************************************************************/


#include <TTree.h> 
#include <TFile.h>
#include <TDirectory.h>
#include <TRandom.h>
#include <TArrayI.h>
#include <TError.h>
#include <TH1F.h>
#include <TGraph.h>

#include "AliLog.h"
#include "AliT0Digitizer.h"
#include "AliT0.h"
#include "AliT0hit.h"
#include "AliT0digit.h"
#include "AliRunDigitizer.h"
#include <AliDetector.h>
#include "AliRun.h"
#include <AliLoader.h>
#include <AliRunLoader.h>
#include <stdlib.h>
#include <Riostream.h>
#include <Riostream.h>
#include "AliT0Parameters.h"
#include "AliCDBLocal.h"
#include "AliCDBStorage.h"
#include "AliCDBManager.h"
#include "AliCDBEntry.h"

ClassImp(AliT0Digitizer)

//___________________________________________
  AliT0Digitizer::AliT0Digitizer()  :AliDigitizer()
{
// Default ctor - don't use it
  ;
}

//___________________________________________
AliT0Digitizer::AliT0Digitizer(AliRunDigitizer* manager) 
  :AliDigitizer(manager),
   fT0(0),
   fHits(0),
   fdigits(0),
   ftimeCFD(0),
   ftimeLED(0),
   fADC(0),
   fADC0(0)
{
// ctor which should be used

  AliDebug(1,"processed");

  fT0 = 0;
  fHits = 0;
  fdigits = 0;

  ftimeCFD = new TArrayI(24); 
  fADC = new TArrayI(24); 
  ftimeLED = new TArrayI(24); 
  fADC0 = new TArrayI(24); 
  

}

//------------------------------------------------------------------------
AliT0Digitizer::~AliT0Digitizer()
{
// Destructor

  AliDebug(1,"T0");

  delete ftimeCFD;
  delete fADC;
  delete ftimeLED;
  delete  fADC0;
}

 //------------------------------------------------------------------------
Bool_t AliT0Digitizer::Init()
{
// Initialization
  AliDebug(1," Init");
 return kTRUE;
}
 

//---------------------------------------------------------------------

void AliT0Digitizer::Exec(Option_t* /*option*/)
{

  /*
    Produde digits from hits
        digits is TObject and includes
	We are writing array if left & right  TDC
	left & right  ADC (will need for slow simulation)
	TOF first particle left & right
	mean time and time difference (vertex position)
	
  */

  //output loader 
  AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
  AliLoader * pOutStartLoader = outRL->GetLoader("T0Loader");

  AliDebug(1,"start...");
  //input loader
  //
  // From hits to digits
  //
 Int_t hit, nhits;
  Int_t countE[24];
  Int_t volume, pmt, trCFD, trLED; 
  Float_t sl, qt;
  Int_t  bestRightTDC, bestLeftTDC, qtCh;
  Float_t time[24], besttime[24], timeGaus[24] ;
    //Q->T-> coefficients !!!! should be asked!!!
  Float_t gain[24],timeDelayCFD[24], timeDelayLED[24];
  Int_t threshold =50; //photoelectrons
  Float_t zdetA, zdetC;
   Int_t sumMultCoeff = 100;
  TObjArray slewingLED;
  TObjArray slewingRec;
  AliT0Parameters* param = AliT0Parameters::Instance();
  param->Init();

  Int_t ph2Mip = param->GetPh2Mip();     
  Int_t channelWidth = param->GetChannelWidth() ;  
  Float_t delayVertex = param->GetTimeDelayTVD();
  for (Int_t i=0; i<24; i++){
    timeDelayCFD[i] = param->GetTimeDelayCFD(i);
    timeDelayLED[i] = param->GetTimeDelayLED(i);
    gain[i] = param->GetGain(i);
    TGraph* gr = param ->GetSlew(i);
    slewingLED.AddAtAndExpand(gr,i);

    TGraph* gr1 = param ->GetSlewRec(i);
    slewingRec.AddAtAndExpand(gr1,i);

    TGraph* grEff = param ->GetPMTeff(i);
    fEffPMT.AddAtAndExpand(grEff,i);
  }
  zdetC = param->GetZposition(0);
  zdetA = param->GetZposition(1);
  
  AliT0hit  *startHit;
  TBranch *brHits=0;
  
  Int_t nFiles=fManager->GetNinputs();
  for (Int_t inputFile=0; inputFile<nFiles;  inputFile++) {
    if (inputFile < nFiles-1) {
	AliWarning(Form("ignoring input stream %d", inputFile));
	continue;
	
    }
    
    Float_t besttimeright=99999.;
    Float_t besttimeleft=99999.;
    Int_t pmtBestRight=9999;
    Int_t pmtBestLeft=9999;
    Int_t timeDiff=999, meanTime=0;
    Int_t sumMult =0;   fSumMult=0;
    bestRightTDC = 99999;  bestLeftTDC = 99999;
 
    ftimeCFD -> Reset();
    fADC -> Reset();
    fADC0 -> Reset();
    ftimeLED ->Reset();
    for (Int_t i0=0; i0<24; i0++)
      {
	time[i0]=besttime[i0]=timeGaus[i0]=99999; countE[i0]=0;
      }
    AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
    AliLoader * pInStartLoader = inRL->GetLoader("T0Loader");
    if (!inRL->GetAliRun()) inRL->LoadgAlice();
    AliT0 *fT0  = (AliT0*)inRL ->GetAliRun()->GetDetector("T0");

       //read Hits 
    pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
    TClonesArray *fHits = fT0->Hits ();
    TTree *th = pInStartLoader->TreeH();
    brHits = th->GetBranch("T0");
    if (brHits) {
      fT0->SetHitsAddressBranch(brHits);
    }else{
      AliError("Branch T0 hit not found");
      exit(111);
    } 
    Int_t ntracks    = (Int_t) th->GetEntries();
    
    if (ntracks<=0) return;
    // Start loop on tracks in the hits containers
    for (Int_t track=0; track<ntracks;track++) {
      brHits->GetEntry(track);
      nhits = fHits->GetEntriesFast();
      for (hit=0;hit<nhits;hit++) 
	{
	  startHit   = (AliT0hit*) fHits->UncheckedAt(hit);
	  if (!startHit) {
 	    AliError("The unchecked hit doesn't exist");
	    break;
	  }
	  pmt=startHit->Pmt();
	  Int_t numpmt=pmt-1;
	  Double_t e=startHit->Etot();
	  volume = startHit->Volume();
	  
	  //	  if(e>0 && RegisterPhotoE(numpmt,e)) {
	  if(e>0 ) {
	    countE[numpmt]++;
	    besttime[numpmt] = startHit->Time();
	    if(besttime[numpmt]<time[numpmt])
	      {
		time[numpmt]=besttime[numpmt];
	      }
	  } //photoelectron accept 
	} //hits loop
    } //track loop
    
    //spread time right&left by 25ps   && besttime
    Float_t c = 0.0299792; // cm/ps
    
    Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
    for (Int_t ipmt=0; ipmt<12; ipmt++){
      if(countE[ipmt] > threshold) {
	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
	if(timeGaus[ipmt]<besttimeleft){
	  besttimeleft=timeGaus[ipmt]; //timeleft
	  pmtBestLeft=ipmt;}
     }
    }
     for ( Int_t ipmt=12; ipmt<24; ipmt++){
      if(countE[ipmt] > threshold) {
	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25); 
	if(timeGaus[ipmt]<besttimeright) {
	  besttimeright=timeGaus[ipmt]; //timeright
	  pmtBestRight=ipmt;}
      }	
    }
   //folding with alignmentz position distribution  
    if( besttimeleft > 10000. && besttimeleft <15000)
      bestLeftTDC=Int_t ((besttimeleft+1000*timeDelayCFD[pmtBestLeft])
			 /channelWidth);
 
    if( besttimeright > 10000. && besttimeright <15000)
      bestRightTDC=Int_t ((besttimeright+1000*timeDelayCFD[pmtBestRight])
			/channelWidth);

    if (bestRightTDC < 99999 && bestLeftTDC < 99999)
      {
	timeDiff=Int_t (((besttimeleft-besttimeright)+1000*delayVertex)
			/channelWidth);
	meanTime=Int_t (((besttimeright+1000*timeDelayCFD[pmtBestLeft]+
			  besttimeleft+1000*timeDelayCFD[pmtBestLeft])/2.)
			/channelWidth);
      }
	AliDebug(10,Form(" time right& left %i %i  time diff && mean time in channels %i %i",bestRightTDC,bestLeftTDC, timeDiff, meanTime));
    for (Int_t i=0; i<24; i++)
      {
       	Float_t  al = countE[i]; 
	if (al>threshold && timeGaus[i]<50000 ) {
	  //fill ADC
	  // QTC procedure:
	  // phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
	  // max 200ns, HIJING  mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
	  // channel 25ps
	  qt= 50.*al*gain[i]/ph2Mip;  // 50mv/Mip amp in mV 
	  //  fill TDC
	  trCFD = Int_t (timeGaus[i] + 1000.*timeDelayCFD[i])/channelWidth; 
	  trLED= Int_t (timeGaus[i] + 1000.*timeDelayLED[i]); 
	  sl = ((TGraph*)slewingLED.At(i))->Eval(qt);
	  trLED = Int_t(( trLED + 1000*sl )/channelWidth);
	  qtCh=Int_t (1000.*TMath::Log(qt)) / channelWidth;
	  fADC0->AddAt(0,i);
	  fADC->AddAt(qtCh,i);
	  ftimeCFD->AddAt(Int_t (trCFD),i);
	  ftimeLED->AddAt(trLED,i); 
	  //	  sumMult += Int_t ((al*gain[i]/ph2Mip)*50) ;
	  sumMult += Int_t (qt/sumMultCoeff)  ;
	 
	AliDebug(10,Form("  pmt %i : time in ns %f time in channels %i   ",
			i, timeGaus[i],trCFD ));
	AliDebug(10,Form(" qt in mV %f qt in ns %f qt in channels %i   ",qt, 
			TMath::Log(qt), qtCh));
	}
      } //pmt loop

    if (sumMult > threshold){
      fSumMult =  Int_t (1000.* TMath::Log(Double_t(sumMult) / Double_t(sumMultCoeff))
			 /channelWidth);
      AliDebug(10,Form("summult mv %i   mult  in chammens %i in ps %i ", 
		      sumMult, fSumMult, fSumMult*channelWidth));
    }
    //     if (  besttimeright<99999 || besttimeleft < 99999) {

      fT0->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult,
		       ftimeCFD,fADC,ftimeLED,fADC0);
      //     } 
     
      AliDebug(10,Form(" Digits wrote bestRightTDC %i bestLeftTDC %i  meanTime %i  timeDiff %i fSumMult %i ", bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult ));
    pOutStartLoader->UnloadHits();
  } //input streams loop
  
    //load digits    
    pOutStartLoader->LoadDigits("UPDATE");
    TTree *treeD  = pOutStartLoader->TreeD();
    if (treeD == 0x0) {
      pOutStartLoader->MakeTree("D");
      treeD = pOutStartLoader->TreeD();
    }
    treeD->Reset();
    fT0  = (AliT0*)outRL ->GetAliRun()->GetDetector("T0");
    // Make a branch in the tree 
    fT0->MakeBranch("D");
     treeD->Fill();
  
     pOutStartLoader->WriteDigits("OVERWRITE");
     
     fT0->ResetDigits();
     pOutStartLoader->UnloadDigits();
     
}


//------------------------------------------------------------------------
Bool_t AliT0Digitizer::RegisterPhotoE(Int_t ipmt,Double_t energy)
{

  
  //  Float_t hc=197.326960*1.e6; //mev*nm
  Double_t hc=1.973*1.e-6; //gev*nm
  Float_t lambda=hc/energy;
  Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
  Double_t  p = gRandom->Rndm();

  if (p > eff)
    return kFALSE;
  
  return kTRUE;
}

//----------------------------------------------------------------------------
Commit	Line	Data
dc7ca31d	1
	2	/**************************************************************************
	3	* Copyright(c) 1998-2000, ALICE Experiment at CERN, All rights reserved. *
	4	* *
	5	* Author: The ALICE Off-line Project. *
	6	* Contributors are mentioned in the code where appropriate. *
	7	* *
	8	* Permission to use, copy, modify and distribute this software and its *
	9	* documentation strictly for non-commercial purposes is hereby granted *
	10	* without fee, provided that the above copyright notice appears in all *
	11	* copies and that both the copyright notice and this permission notice *
	12	* appear in the supporting documentation. The authors make no claims *
	13	* about the suitability of this software for any purpose. It is *
	14	* provided "as is" without express or implied warranty. *
	15	**************************************************************************/
	16
	17
	18	#include <TTree.h>
	19	#include <TFile.h>
	20	#include <TDirectory.h>
	21	#include <TRandom.h>
	22	#include <TArrayI.h>
	23	#include <TError.h>
	24	#include <TH1F.h>
	25	#include <TGraph.h>
	26
	27	#include "AliLog.h"
	28	#include "AliT0Digitizer.h"
	29	#include "AliT0.h"
	30	#include "AliT0hit.h"
	31	#include "AliT0digit.h"
	32	#include "AliRunDigitizer.h"
	33	#include <AliDetector.h>
	34	#include "AliRun.h"
	35	#include <AliLoader.h>
	36	#include <AliRunLoader.h>
	37	#include <stdlib.h>
	38	#include <Riostream.h>
	39	#include <Riostream.h>
	40	#include "AliT0Parameters.h"
	41	#include "AliCDBLocal.h"
	42	#include "AliCDBStorage.h"
	43	#include "AliCDBManager.h"
	44	#include "AliCDBEntry.h"
	45
	46	ClassImp(AliT0Digitizer)
	47
	48	//___________________________________________
	49	AliT0Digitizer::AliT0Digitizer() :AliDigitizer()
	50	{
	51	// Default ctor - don't use it
	52	;
	53	}
	54
	55	//___________________________________________
	56	AliT0Digitizer::AliT0Digitizer(AliRunDigitizer* manager)
	57	:AliDigitizer(manager),
	58	fT0(0),
	59	fHits(0),
	60	fdigits(0),
	61	ftimeCFD(0),
	62	ftimeLED(0),
	63	fADC(0),
	64	fADC0(0)
65	{
66	// ctor which should be used
67
68	AliDebug(1,"processed");
69
70	fT0 = 0;
71	fHits = 0;
72	fdigits = 0;
73
74	ftimeCFD = new TArrayI(24);
75	fADC = new TArrayI(24);
76	ftimeLED = new TArrayI(24);
77	fADC0 = new TArrayI(24);
78
79
80	}
81
82	//------------------------------------------------------------------------
83	AliT0Digitizer::~AliT0Digitizer()
84	{
85	// Destructor
86
87	AliDebug(1,"T0");
88
89	delete ftimeCFD;
90	delete fADC;
91	delete ftimeLED;
92	delete fADC0;
93	}
94
95	//------------------------------------------------------------------------
96	Bool_t AliT0Digitizer::Init()
97	{
98	// Initialization
99	AliDebug(1," Init");
100	return kTRUE;
101	}
102
103
104	//---------------------------------------------------------------------
105
106	void AliT0Digitizer::Exec(Option_t* /option/)
107	{
108
109	/*
110	Produde digits from hits
111	digits is TObject and includes
112	We are writing array if left & right TDC
113	left & right ADC (will need for slow simulation)
114	TOF first particle left & right
115	mean time and time difference (vertex position)
116
117	*/
118
119	//output loader
120	AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
121	AliLoader * pOutStartLoader = outRL->GetLoader("T0Loader");
122
123	AliDebug(1,"start...");
124	//input loader
125	//
126	// From hits to digits
127	//
128	Int_t hit, nhits;
129	Int_t countE[24];
130	Int_t volume, pmt, trCFD, trLED;
131	Float_t sl, qt;
132	Int_t bestRightTDC, bestLeftTDC, qtCh;
133	Float_t time[24], besttime[24], timeGaus[24] ;
134	//Q->T-> coefficients !!!! should be asked!!!
135	Float_t gain[24],timeDelayCFD[24], timeDelayLED[24];
136	Int_t threshold =50; //photoelectrons
137	Float_t zdetA, zdetC;
138	Int_t sumMultCoeff = 100;
139	TObjArray slewingLED;
140	TObjArray slewingRec;
141	AliT0Parameters* param = AliT0Parameters::Instance();
142	param->Init();
143
144	Int_t ph2Mip = param->GetPh2Mip();
145	Int_t channelWidth = param->GetChannelWidth() ;
146	Float_t delayVertex = param->GetTimeDelayTVD();
147	for (Int_t i=0; i<24; i++){
148	timeDelayCFD[i] = param->GetTimeDelayCFD(i);
149	timeDelayLED[i] = param->GetTimeDelayLED(i);
150	gain[i] = param->GetGain(i);
151	TGraph* gr = param ->GetSlew(i);
152	slewingLED.AddAtAndExpand(gr,i);
153
154	TGraph* gr1 = param ->GetSlewRec(i);
155	slewingRec.AddAtAndExpand(gr1,i);
156
157	TGraph* grEff = param ->GetPMTeff(i);
158	fEffPMT.AddAtAndExpand(grEff,i);
159	}
160	zdetC = param->GetZposition(0);
161	zdetA = param->GetZposition(1);
162
163	AliT0hit *startHit;
164	TBranch *brHits=0;
165
166	Int_t nFiles=fManager->GetNinputs();
167	for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
168	if (inputFile < nFiles-1) {
169	AliWarning(Form("ignoring input stream %d", inputFile));
170	continue;
171
172	}
173
174	Float_t besttimeright=99999.;
175	Float_t besttimeleft=99999.;
176	Int_t pmtBestRight=9999;
177	Int_t pmtBestLeft=9999;
178	Int_t timeDiff=999, meanTime=0;
179	Int_t sumMult =0; fSumMult=0;
180	bestRightTDC = 99999; bestLeftTDC = 99999;
181
182	ftimeCFD -> Reset();
183	fADC -> Reset();
184	fADC0 -> Reset();
185	ftimeLED ->Reset();
186	for (Int_t i0=0; i0<24; i0++)
187	{
188	time[i0]=besttime[i0]=timeGaus[i0]=99999; countE[i0]=0;
189	}
190	AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
191	AliLoader * pInStartLoader = inRL->GetLoader("T0Loader");
192	if (!inRL->GetAliRun()) inRL->LoadgAlice();
193	AliT0 fT0 = (AliT0)inRL ->GetAliRun()->GetDetector("T0");
194
195	//read Hits
196	pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
197	TClonesArray *fHits = fT0->Hits ();
198	TTree *th = pInStartLoader->TreeH();
199	brHits = th->GetBranch("T0");
200	if (brHits) {
201	fT0->SetHitsAddressBranch(brHits);
202	}else{
203	AliError("Branch T0 hit not found");
204	exit(111);
205	}
206	Int_t ntracks = (Int_t) th->GetEntries();
207
208	if (ntracks<=0) return;
209	// Start loop on tracks in the hits containers
210	for (Int_t track=0; track<ntracks;track++) {
211	brHits->GetEntry(track);
212	nhits = fHits->GetEntriesFast();
213	for (hit=0;hit<nhits;hit++)
214	{
215	startHit = (AliT0hit*) fHits->UncheckedAt(hit);
216	if (!startHit) {
217	AliError("The unchecked hit doesn't exist");
218	break;
219	}
220	pmt=startHit->Pmt();
221	Int_t numpmt=pmt-1;
222	Double_t e=startHit->Etot();
223	volume = startHit->Volume();
224
225	// if(e>0 && RegisterPhotoE(numpmt,e)) {
226	if(e>0 ) {
227	countE[numpmt]++;
228	besttime[numpmt] = startHit->Time();
229	if(besttime[numpmt]<time[numpmt])
230	{
231	time[numpmt]=besttime[numpmt];
232	}
233	} //photoelectron accept
234	} //hits loop
235	} //track loop
236
237	//spread time right&left by 25ps && besttime
238	Float_t c = 0.0299792; // cm/ps
239
240	Float_t koef=(zdetA-zdetC)/c; //correction position difference by cable
241	for (Int_t ipmt=0; ipmt<12; ipmt++){
242	if(countE[ipmt] > threshold) {
243	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25)+koef;
244	if(timeGaus[ipmt]<besttimeleft){
245	besttimeleft=timeGaus[ipmt]; //timeleft
246	pmtBestLeft=ipmt;}
247	}
248	}
249	for ( Int_t ipmt=12; ipmt<24; ipmt++){
250	if(countE[ipmt] > threshold) {
251	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
252	if(timeGaus[ipmt]<besttimeright) {
253	besttimeright=timeGaus[ipmt]; //timeright
254	pmtBestRight=ipmt;}
255	}
256	}
257	//folding with alignmentz position distribution
258	if( besttimeleft > 10000. && besttimeleft <15000)
259	bestLeftTDC=Int_t ((besttimeleft+1000*timeDelayCFD[pmtBestLeft])
260	/channelWidth);
261
262	if( besttimeright > 10000. && besttimeright <15000)
263	bestRightTDC=Int_t ((besttimeright+1000*timeDelayCFD[pmtBestRight])
264	/channelWidth);
265
266	if (bestRightTDC < 99999 && bestLeftTDC < 99999)
267	{
268	timeDiff=Int_t (((besttimeleft-besttimeright)+1000*delayVertex)
269	/channelWidth);
270	meanTime=Int_t (((besttimeright+1000*timeDelayCFD[pmtBestLeft]+
271	besttimeleft+1000*timeDelayCFD[pmtBestLeft])/2.)
272	/channelWidth);
273	}
274	AliDebug(10,Form(" time right& left %i %i time diff && mean time in channels %i %i",bestRightTDC,bestLeftTDC, timeDiff, meanTime));
275	for (Int_t i=0; i<24; i++)
276	{
277	Float_t al = countE[i];
278	if (al>threshold && timeGaus[i]<50000 ) {
279	//fill ADC
280	// QTC procedure:
281	// phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
282	// max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
283	// channel 25ps
284	qt= 50.algain[i]/ph2Mip; // 50mv/Mip amp in mV
285	// fill TDC
286	trCFD = Int_t (timeGaus[i] + 1000.*timeDelayCFD[i])/channelWidth;
287	trLED= Int_t (timeGaus[i] + 1000.*timeDelayLED[i]);
288	sl = ((TGraph*)slewingLED.At(i))->Eval(qt);
289	trLED = Int_t(( trLED + 1000*sl )/channelWidth);
290	qtCh=Int_t (1000.*TMath::Log(qt)) / channelWidth;
291	fADC0->AddAt(0,i);
292	fADC->AddAt(qtCh,i);
293	ftimeCFD->AddAt(Int_t (trCFD),i);
294	ftimeLED->AddAt(trLED,i);
295	// sumMult += Int_t ((algain[i]/ph2Mip)50) ;
296	sumMult += Int_t (qt/sumMultCoeff) ;
297
298	AliDebug(10,Form(" pmt %i : time in ns %f time in channels %i ",
299	i, timeGaus[i],trCFD ));
300	AliDebug(10,Form(" qt in mV %f qt in ns %f qt in channels %i ",qt,
301	TMath::Log(qt), qtCh));
302	}
303	} //pmt loop
304
305	if (sumMult > threshold){
306	fSumMult = Int_t (1000.* TMath::Log(Double_t(sumMult) / Double_t(sumMultCoeff))
307	/channelWidth);
308	AliDebug(10,Form("summult mv %i mult in chammens %i in ps %i ",
309	sumMult, fSumMult, fSumMult*channelWidth));
310	}
311	// if ( besttimeright<99999 \|\| besttimeleft < 99999) {
312
313	fT0->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult,
314	ftimeCFD,fADC,ftimeLED,fADC0);
315	// }
316
317	AliDebug(10,Form(" Digits wrote bestRightTDC %i bestLeftTDC %i meanTime %i timeDiff %i fSumMult %i ", bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult ));
318	pOutStartLoader->UnloadHits();
319	} //input streams loop
320
321	//load digits
322	pOutStartLoader->LoadDigits("UPDATE");
323	TTree *treeD = pOutStartLoader->TreeD();
324	if (treeD == 0x0) {
325	pOutStartLoader->MakeTree("D");
326	treeD = pOutStartLoader->TreeD();
327	}
328	treeD->Reset();
329	fT0 = (AliT0*)outRL ->GetAliRun()->GetDetector("T0");
330	// Make a branch in the tree
331	fT0->MakeBranch("D");
332	treeD->Fill();
333
334	pOutStartLoader->WriteDigits("OVERWRITE");
335
336	fT0->ResetDigits();
337	pOutStartLoader->UnloadDigits();
338
339	}
340
341
342	//------------------------------------------------------------------------
343	Bool_t AliT0Digitizer::RegisterPhotoE(Int_t ipmt,Double_t energy)
344	{
345
346
347	// Float_t hc=197.3269601.e6; //mevnm
348	Double_t hc=1.9731.e-6; //gevnm
349	Float_t lambda=hc/energy;
350	Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
351	Double_t p = gRandom->Rndm();
352
353	if (p > eff)
354	return kFALSE;
355
356	return kTRUE;
357	}
358
359	//----------------------------------------------------------------------------