[u/mrichter/AliRoot.git] / START / AliSTARTDigitizer.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 "AliLog.h"
#include "AliSTARTDigitizer.h"
#include "AliSTART.h"
#include "AliSTARThit.h"
#include "AliSTARTdigit.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>

ClassImp(AliSTARTDigitizer)

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

//___________________________________________
AliSTARTDigitizer::AliSTARTDigitizer(AliRunDigitizer* manager) 
  :AliDigitizer(manager),
   fSTART(0),
   fHits(0),
   fdigits(0),
   ftimeTDC(0),
   fADC(0),
   ftimeTDCAmp(0),
   fADCAmp(0),
   fSumMult(0),
   fEff(0)
{
  //	cout<<"AliSTARTDigitizer::AliSTARTDigitizer"<<endl;
// ctor which should be used

  AliDebug(1,"processed");

  fSTART = 0;
  fHits = 0;
  fdigits = 0;

  ftimeTDC = new TArrayI(24); 
  fADC = new TArrayI(24); 
  ftimeTDCAmp = new TArrayI(24); 
  fADCAmp = new TArrayI(24); 
  fSumMult = new TArrayI(6); 
  

  TFile* file = TFile::Open("$ALICE_ROOT/START/PMTefficiency.root");
  fEff = (TH1F*) file->Get("hEff")->Clone();
  fEff->SetDirectory(NULL);
  file->Close();
  delete file;
}

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

  AliDebug(1,"START");

  delete ftimeTDC;
  delete fADC;
  delete fEff;
  delete ftimeTDCAmp;
  delete  fADCAmp;
  delete fSumMult;
}

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

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

void AliSTARTDigitizer::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("STARTLoader");

  AliDebug(1,"start...");
  cout<<" AliSTARTDigitizer::Exec "<<endl;
  //input loader
  //
  // From hits to digits
  //
  Int_t hit, nhits;
  Int_t countE[24], sumMult[3];
  Int_t volume,pmt,tr,qt,qtAmp;
  Int_t  bestRightTDC,bestLeftTDC;
  Float_t time[24],besttime[24], timeGaus[24] ;
  Float_t channelWidth=25.; //ps
    //Q->T-> coefficients !!!! should be asked!!!
  Float_t ph2mV = 150./500.;
  Int_t threshold =50; //photoelectrons
  Int_t mV2channel=200000/(25*25);  //5V -> 200ns

  
  AliSTARThit  *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 timeDiff, meanTime;
    
    for (Int_t i0=0; i0<24; i0++)
      {
	time[i0]=99999;  besttime[i0]=99999;	countE[i0]=0;
      }
    for ( Int_t imu=0; imu<3; imu++) sumMult[imu]=0;
    AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
    AliLoader * pInStartLoader = inRL->GetLoader("STARTLoader");
    if (!inRL->GetAliRun()) inRL->LoadgAlice();
    AliSTART *fSTART  = (AliSTART*)inRL ->GetAliRun()->GetDetector("START");

       //read Hits 
    pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
    TClonesArray *fHits = fSTART->Hits ();
    TTree *th = pInStartLoader->TreeH();
    brHits = th->GetBranch("START");
    if (brHits) {
      fSTART->SetHitsAddressBranch(brHits);
    }else{
      AliError("Branch START 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   = (AliSTARThit*) 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(e)) {
	    countE[numpmt]++;
	    besttime[numpmt] = startHit->Time();
	    if(besttime[numpmt]<time[numpmt])
	      {
		time[numpmt]=besttime[numpmt];
	      }
	  } 
	} //hits loop
    } //track loop
    
    //spread time right&left by 25ps   && besttime
    for (Int_t ipmt=0; ipmt<12; ipmt++){
      if(countE[ipmt] > threshold) {
	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
	if(timeGaus[ipmt]<besttimeleft) besttimeleft=timeGaus[ipmt]; //timeleft
	sumMult[0] +=  countE[ipmt];
	sumMult[1] +=  countE[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
	sumMult[0] +=  countE[ipmt];
	sumMult[2] +=  countE[ipmt];
      }	
    }
    //ADC features fill digits
   //folding with experimental time distribution
    Float_t c = 0.0299792; // cm/ps
    Float_t koef=(350.-69.7)/c;
    Float_t  besttimeleftR= besttimeleft;
    besttimeleft=koef+besttimeleft;
    bestLeftTDC=Int_t (besttimeleftR/channelWidth);
    bestRightTDC=Int_t (besttimeright/channelWidth);
    timeDiff=Int_t ((besttimeright-besttimeleftR)/channelWidth);
    meanTime=Int_t (((besttimeright+besttimeleft)/2.)/channelWidth);
    AliDebug(2,Form(" time in ns %f ", besttimeleft));
    for (Int_t i=0; i<24; i++)
      {
	//  fill TDC
	tr= Int_t (timeGaus[i]/channelWidth); 
	if(timeGaus[i]>50000) tr=0;
	
	//fill ADC
       	Int_t al= countE[i]; 
	// QTC procedure:
	// phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
	// max 200ns, HIJING  mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
	// channel 25ps
	if (al>threshold) {
	  qt=Int_t (TMath::Log(al*ph2mV) * mV2channel); 
	  qtAmp=Int_t (TMath::Log(al*10*ph2mV) * mV2channel);
	  cout<<i<<" "<<qt<<" "<<qtAmp<<endl;
	  fADC->AddAt(qt,i);
	  ftimeTDC->AddAt(tr,i);
	  fADCAmp->AddAt(qtAmp,i);
	  ftimeTDCAmp->AddAt(tr,i); //now is the same as non-amplified but will be change
	}
      } //pmt loop
    for (Int_t im=0; im<3; im++)
      { 
	if (sumMult[im]>threshold){
	  Int_t sum=Int_t (TMath::Log(sumMult[im]*ph2mV) * mV2channel);
	  Int_t sumAmp=Int_t (TMath::Log(10*sumMult[im]*ph2mV) * mV2channel);
	  fSumMult->AddAt(sum,im);
	  fSumMult->AddAt(sumAmp,im+3);
	}
      }	

    fSTART->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult,
		     ftimeTDC,fADC,ftimeTDCAmp,fADCAmp);
    pOutStartLoader->UnloadHits();
  } //input streams loop
  
    //load digits    
    pOutStartLoader->LoadDigits("UPDATE");
    TTree *treeD  = pOutStartLoader->TreeD();
    if (treeD == 0x0) {
      pOutStartLoader->MakeTree("D");
      treeD = pOutStartLoader->TreeD();
    }
    AliSTART *fSTART  = (AliSTART*)outRL ->GetAliRun()->GetDetector("START");
    fSTART->MakeBranch("D");
     treeD->Reset();
     treeD->Fill();
  
  pOutStartLoader->WriteDigits("OVERWRITE");
  
  fSTART->ResetDigits();
  pOutStartLoader->UnloadDigits();
    
}


//------------------------------------------------------------------------
Bool_t AliSTARTDigitizer::RegisterPhotoE(Double_t energy)
{

  
  //  Float_t hc=197.326960*1.e6; //mev*nm
  Double_t hc=1.973*1.e-6; //gev*nm
  //  cout<<"AliSTARTDigitizer::RegisterPhotoE >> energy "<<energy<<endl;
  Float_t lambda=hc/energy;
  Int_t bin=  fEff->GetXaxis()->FindBin(lambda);
  Float_t eff=fEff->GetBinContent(bin);
  Double_t  p = gRandom->Rndm();
  if (p > eff)
    return kFALSE;
  
  return kTRUE;
}
//----------------------------------------------------------------------------
Commit	Line	Data
ede9aff7	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>
ede9aff7	19	#include <TFile.h>
	20	#include <TDirectory.h>
	21	#include <TRandom.h>
e73d68f2	22	#include <TArrayI.h>
2b4678e2	23	#include <TError.h>
e4da63c2	24	#include <TH1F.h>
ede9aff7	25
e4da63c2	26	#include "AliLog.h"
ede9aff7	27	#include "AliSTARTDigitizer.h"
	28	#include "AliSTART.h"
	29	#include "AliSTARThit.h"
	30	#include "AliSTARTdigit.h"
	31	#include "AliRunDigitizer.h"
affef71b	32	#include <AliDetector.h>
ede9aff7	33	#include "AliRun.h"
affef71b	34	#include <AliLoader.h>
affef71b	35	#include <AliRunLoader.h>
ede9aff7	36	#include <stdlib.h>
ef0750c2	37	#include <Riostream.h>
ef0750c2	38	#include <Riostream.h>
ede9aff7	39
	40	ClassImp(AliSTARTDigitizer)
	41
	42	//___________________________________________
	43	AliSTARTDigitizer::AliSTARTDigitizer() :AliDigitizer()
	44	{
	45	// Default ctor - don't use it
	46	;
	47	}
	48
	49	//___________________________________________
	50	AliSTARTDigitizer::AliSTARTDigitizer(AliRunDigitizer* manager)
7a18b6a5	51	:AliDigitizer(manager),
	52	fSTART(0),
	53	fHits(0),
	54	fdigits(0),
	55	ftimeTDC(0),
	56	fADC(0),
db173afc	57	ftimeTDCAmp(0),
	58	fADCAmp(0),
	59	fSumMult(0),
7a18b6a5	60	fEff(0)
ede9aff7	61	{
f540341d	62	// cout<<"AliSTARTDigitizer::AliSTARTDigitizer"<<endl;
ede9aff7	63	// ctor which should be used
e4da63c2	64
	65	AliDebug(1,"processed");
	66
7a18b6a5	67	fSTART = 0;
7a18b6a5	68	fHits = 0;
	69	fdigits = 0;
	70
db173afc	71	ftimeTDC = new TArrayI(24);
	72	fADC = new TArrayI(24);
	73	ftimeTDCAmp = new TArrayI(24);
	74	fADCAmp = new TArrayI(24);
	75	fSumMult = new TArrayI(6);
	76
174d209f	77
	78	TFile* file = TFile::Open("$ALICE_ROOT/START/PMTefficiency.root");
	79	fEff = (TH1F*) file->Get("hEff")->Clone();
	80	fEff->SetDirectory(NULL);
	81	file->Close();
	82	delete file;
ede9aff7	83	}
	84
	85	//------------------------------------------------------------------------
	86	AliSTARTDigitizer::~AliSTARTDigitizer()
	87	{
	88	// Destructor
e4da63c2	89
7a18b6a5	90	AliDebug(1,"START");
7a18b6a5	91
e4da63c2	92	delete ftimeTDC;
e4da63c2	93	delete fADC;
174d209f	94	delete fEff;
db173afc	95	delete ftimeTDCAmp;
	96	delete fADCAmp;
	97	delete fSumMult;
ede9aff7	98	}
	99
	100	//------------------------------------------------------------------------
	101	Bool_t AliSTARTDigitizer::Init()
	102	{
	103	// Initialization
e4da63c2	104	AliDebug(1," Init");
ede9aff7	105	return kTRUE;
	106	}
	107
	108
	109	//---------------------------------------------------------------------
	110
dc63cec5	111	void AliSTARTDigitizer::Exec(Option_t* /option/)
ede9aff7	112	{
ede9aff7	113
affef71b	114	/*
	115	Produde digits from hits
	116	digits is TObject and includes
	117	We are writing array if left & right TDC
	118	left & right ADC (will need for slow simulation)
	119	TOF first particle left & right
	120	mean time and time difference (vertex position)
	121
	122	*/
88cb7938	123
db173afc	124	//output loader
	125	AliRunLoader *outRL = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
	126	AliLoader * pOutStartLoader = outRL->GetLoader("STARTLoader");
88cb7938	127
e4da63c2	128	AliDebug(1,"start...");
db173afc	129	cout<<" AliSTARTDigitizer::Exec "<<endl;
db173afc	130	//input loader
ede9aff7	131	//
	132	// From hits to digits
	133	//
e73d68f2	134	Int_t hit, nhits;
db173afc	135	Int_t countE[24], sumMult[3];
db173afc	136	Int_t volume,pmt,tr,qt,qtAmp;
e4da63c2	137	Int_t bestRightTDC,bestLeftTDC;
db173afc	138	Float_t time[24],besttime[24], timeGaus[24] ;
e4da63c2	139	Float_t channelWidth=25.; //ps
db173afc	140	//Q->T-> coefficients !!!! should be asked!!!
	141	Float_t ph2mV = 150./500.;
	142	Int_t threshold =50; //photoelectrons
	143	Int_t mV2channel=200000/(25*25); //5V -> 200ns
	144
e73d68f2	145
ede9aff7	146	AliSTARThit *startHit;
ede9aff7	147	TBranch *brHits=0;
e4da63c2	148
ede9aff7	149	Int_t nFiles=fManager->GetNinputs();
ede9aff7	150	for (Int_t inputFile=0; inputFile<nFiles; inputFile++) {
6fc133d2	151	if (inputFile < nFiles-1) {
e4da63c2	152	AliWarning(Form("ignoring input stream %d", inputFile));
6fc133d2	153	continue;
db173afc	154
6fc133d2	155	}
db173afc	156
	157	Float_t besttimeright=99999.;
	158	Float_t besttimeleft=99999.;
	159	Int_t timeDiff, meanTime;
	160
	161	for (Int_t i0=0; i0<24; i0++)
e73d68f2	162	{
db173afc	163	time[i0]=99999; besttime[i0]=99999; countE[i0]=0;
e73d68f2	164	}
db173afc	165	for ( Int_t imu=0; imu<3; imu++) sumMult[imu]=0;
	166	AliRunLoader * inRL = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
	167	AliLoader * pInStartLoader = inRL->GetLoader("STARTLoader");
6fc133d2	168	if (!inRL->GetAliRun()) inRL->LoadgAlice();
985b3149	169	AliSTART fSTART = (AliSTART)inRL ->GetAliRun()->GetDetector("START");
db173afc	170
db173afc	171	//read Hits
affef71b	172	pInStartLoader->LoadHits("READ");//probably it is necessary to load them before
affef71b	173	TClonesArray *fHits = fSTART->Hits ();
affef71b	174	TTree *th = pInStartLoader->TreeH();
ede9aff7	175	brHits = th->GetBranch("START");
ede9aff7	176	if (brHits) {
e4da63c2	177	fSTART->SetHitsAddressBranch(brHits);
ede9aff7	178	}else{
db173afc	179	AliError("Branch START hit not found");
00907af4	180	exit(111);
ede9aff7	181	}
ede9aff7	182	Int_t ntracks = (Int_t) th->GetEntries();
db173afc	183
e4da63c2	184	if (ntracks<=0) return;
ede9aff7	185	// Start loop on tracks in the hits containers
	186	for (Int_t track=0; track<ntracks;track++) {
	187	brHits->GetEntry(track);
7a68e0ef	188	nhits = fHits->GetEntriesFast();
db173afc	189	for (hit=0;hit<nhits;hit++)
e4da63c2	190	{
	191	startHit = (AliSTARThit*) fHits->UncheckedAt(hit);
	192	if (!startHit) {
	193	AliError("The unchecked hit doesn't exist");
	194	break;
	195	}
	196	pmt=startHit->Pmt();
	197	Int_t numpmt=pmt-1;
db173afc	198	Double_t e=startHit->Etot();
e4da63c2	199	volume = startHit->Volume();
e4da63c2	200
db173afc	201	if(e>0 && RegisterPhotoE(e)) {
	202	countE[numpmt]++;
	203	besttime[numpmt] = startHit->Time();
	204	if(besttime[numpmt]<time[numpmt])
	205	{
	206	time[numpmt]=besttime[numpmt];
	207	}
	208	}
e4da63c2	209	} //hits loop
ede9aff7	210	} //track loop
e4da63c2	211
db173afc	212	//spread time right&left by 25ps && besttime
	213	for (Int_t ipmt=0; ipmt<12; ipmt++){
	214	if(countE[ipmt] > threshold) {
	215	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
e4da63c2	216	if(timeGaus[ipmt]<besttimeleft) besttimeleft=timeGaus[ipmt]; //timeleft
db173afc	217	sumMult[0] += countE[ipmt];
db173afc	218	sumMult[1] += countE[ipmt];
e4da63c2	219	}
db173afc	220	}
	221	for ( Int_t ipmt=12; ipmt<24; ipmt++){
	222	if(countE[ipmt] > threshold) {
	223	timeGaus[ipmt]=gRandom->Gaus(time[ipmt],25);
e4da63c2	224	if(timeGaus[ipmt]<besttimeright) besttimeright=timeGaus[ipmt]; //timeright
db173afc	225	sumMult[0] += countE[ipmt];
	226	sumMult[2] += countE[ipmt];
	227	}
	228	}
	229	//ADC features fill digits
	230	//folding with experimental time distribution
	231	Float_t c = 0.0299792; // cm/ps
e4da63c2	232	Float_t koef=(350.-69.7)/c;
	233	Float_t besttimeleftR= besttimeleft;
	234	besttimeleft=koef+besttimeleft;
db173afc	235	bestLeftTDC=Int_t (besttimeleftR/channelWidth);
	236	bestRightTDC=Int_t (besttimeright/channelWidth);
	237	timeDiff=Int_t ((besttimeright-besttimeleftR)/channelWidth);
	238	meanTime=Int_t (((besttimeright+besttimeleft)/2.)/channelWidth);
	239	AliDebug(2,Form(" time in ns %f ", besttimeleft));
	240	for (Int_t i=0; i<24; i++)
e73d68f2	241	{
e4da63c2	242	// fill TDC
db173afc	243	tr= Int_t (timeGaus[i]/channelWidth);
db173afc	244	if(timeGaus[i]>50000) tr=0;
e73d68f2	245
e4da63c2	246	//fill ADC
db173afc	247	Int_t al= countE[i];
	248	// QTC procedure:
	249	// phe -> mV 0.3; 1MIP ->500phe -> ln (amp (mV)) = 5;
	250	// max 200ns, HIJING mean 50000phe -> 15000mv -> ln = 15 (s zapasom)
	251	// channel 25ps
	252	if (al>threshold) {
	253	qt=Int_t (TMath::Log(alph2mV) mV2channel);
	254	qtAmp=Int_t (TMath::Log(al10ph2mV) * mV2channel);
	255	cout<<i<<" "<<qt<<" "<<qtAmp<<endl;
	256	fADC->AddAt(qt,i);
	257	ftimeTDC->AddAt(tr,i);
	258	fADCAmp->AddAt(qtAmp,i);
	259	ftimeTDCAmp->AddAt(tr,i); //now is the same as non-amplified but will be change
	260	}
e4da63c2	261	} //pmt loop
db173afc	262	for (Int_t im=0; im<3; im++)
	263	{
	264	if (sumMult[im]>threshold){
	265	Int_t sum=Int_t (TMath::Log(sumMult[im]ph2mV) mV2channel);
	266	Int_t sumAmp=Int_t (TMath::Log(10sumMult[im]ph2mV) * mV2channel);
	267	fSumMult->AddAt(sum,im);
	268	fSumMult->AddAt(sumAmp,im+3);
	269	}
	270	}
	271
	272	fSTART->AddDigit(bestRightTDC,bestLeftTDC,meanTime,timeDiff,fSumMult,
	273	ftimeTDC,fADC,ftimeTDCAmp,fADCAmp);
	274	pOutStartLoader->UnloadHits();
6fc133d2	275	} //input streams loop
db173afc	276
	277	//load digits
	278	pOutStartLoader->LoadDigits("UPDATE");
	279	TTree *treeD = pOutStartLoader->TreeD();
	280	if (treeD == 0x0) {
	281	pOutStartLoader->MakeTree("D");
	282	treeD = pOutStartLoader->TreeD();
	283	}
985b3149	284	AliSTART fSTART = (AliSTART)outRL ->GetAliRun()->GetDetector("START");
db173afc	285	fSTART->MakeBranch("D");
	286	treeD->Reset();
	287	treeD->Fill();
	288
6fc133d2	289	pOutStartLoader->WriteDigits("OVERWRITE");
db173afc	290
db173afc	291	fSTART->ResetDigits();
6fc133d2	292	pOutStartLoader->UnloadDigits();
db173afc	293
ede9aff7	294	}
	295
	296
e73d68f2	297	//------------------------------------------------------------------------
2303c85c	298	Bool_t AliSTARTDigitizer::RegisterPhotoE(Double_t energy)
e73d68f2	299	{
e4da63c2	300
	301
	302	// Float_t hc=197.3269601.e6; //mevnm
2303c85c	303	Double_t hc=1.9731.e-6; //gevnm
	304	// cout<<"AliSTARTDigitizer::RegisterPhotoE >> energy "<<energy<<endl;
	305	Float_t lambda=hc/energy;
174d209f	306	Int_t bin= fEff->GetXaxis()->FindBin(lambda);
174d209f	307	Float_t eff=fEff->GetBinContent(bin);
e4da63c2	308	Double_t p = gRandom->Rndm();
	309	if (p > eff)
	310	return kFALSE;
	311
	312	return kTRUE;
e73d68f2	313	}
7a68e0ef	314	//----------------------------------------------------------------------------