[u/mrichter/AliRoot.git] / RICH / AliRICHMerger.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.                  *
 **************************************************************************/

/* $Id$ */

#include <Riostream.h> 

#include <TTree.h> 
#include <TObjArray.h>
#include <TFile.h>
#include <TDirectory.h>
#include <TParticle.h>

#include "AliRICHMerger.h"
#include "AliRICHChamber.h"
#include "AliHitMap.h"
#include "AliRICHHitMapA1.h"
#include "AliRICH.h"
#include "AliRICHSDigit.h"
#include "AliRICHDigit.h"
#include "AliRICHTransientDigit.h"
#include "AliRun.h"
#include "AliPDG.h"

ClassImp(AliRICHMerger)

//___________________________________________
  AliRICHMerger::AliRICHMerger()
{
// Default constructor    
  fEvNrSig = 0;
  fEvNrBgr = 0;
  fMerge   = kDigitize;
  fFnBgr   = 0;
  fHitMap  = 0;
  fList    = 0;
  fTrH1    = 0;
  fHitsBgr = 0;
  fSDigitsBgr = 0;
  fHitMap     = 0;
  fList       = 0;
  fBgrFile    = 0;
}

//------------------------------------------------------------------------
AliRICHMerger::~AliRICHMerger()
{
// Destructor
  if (fTrH1)       delete fTrH1;
  if (fHitsBgr)    delete fHitsBgr;
  if (fSDigitsBgr) delete fSDigitsBgr;
  if (fHitMap)     delete fHitMap;
  if (fList)       delete fList;
  if (fBgrFile)    delete fBgrFile;
}

//------------------------------------------------------------------------
Bool_t AliRICHMerger::Exists(const AliRICHSDigit *padhit)
{
  return (fHitMap[fNch]->TestHit(padhit->PadX(),padhit->PadY()));
}

//------------------------------------------------------------------------
void AliRICHMerger::Update(AliRICHSDigit *padhit)
{
  AliRICHTransientDigit *pdigit = 
    static_cast<AliRICHTransientDigit*>(
      fHitMap[fNch]->GetHit(padhit->PadX(),padhit->PadY()));

  // update charge
  //
  Int_t iqpad    = Int_t(padhit->QPad()); // charge per pad
  pdigit->AddSignal(iqpad);
  pdigit->AddPhysicsSignal(iqpad);		

  // update list of tracks
  //
  Int_t track, charge;    
  if (fSignal) {
    track = fTrack;
    charge = iqpad;
  } else {
    track = kBgTag;
    charge = kBgTag;
  }
  pdigit->UpdateTrackList(track,charge);
}

//------------------------------------------------------------------------
void AliRICHMerger::CreateNew(AliRICHSDigit *padhit)
{
  fList->AddAtAndExpand(
    new AliRICHTransientDigit(fNch,fDigits),fCounter);
  fHitMap[fNch]->SetHit(padhit->PadX(),padhit->PadY(),fCounter);

  AliRICHTransientDigit* pdigit = 
    static_cast<AliRICHTransientDigit*>(fList->Last());
  // list of tracks
  Int_t track, charge;
  if (fSignal) {
    track = fTrack;
    charge = padhit->QPad();
  } else {
    track = kBgTag;
    charge = kBgTag;
  }
  pdigit->AddToTrackList(track,charge);
  fCounter++;
}


//------------------------------------------------------------------------
void AliRICHMerger::Init()
{
// Initialisation
    
  if (fMerge && !fBgrFile) fBgrFile = InitBgr();
}


//------------------------------------------------------------------------
TFile* AliRICHMerger::InitBgr()
{
// Initialise background event
  TFile *file = new TFile(fFnBgr);
// add error checking later
  printf("\n AliRICHMerger has opened %s file with background event \n", fFnBgr);
  fHitsBgr     = new TClonesArray("AliRICHhit",1000);
  fSDigitsBgr  = new TClonesArray("AliRICHSDigit",1000);
  return file;
}

//------------------------------------------------------------------------
void AliRICHMerger::Digitise(Int_t nev, Int_t flag)
{

  // keep galice.root for signal and name differently the file for 
  // background when add! otherwise the track info for signal will be lost !
  nev++;//to remove warning
  Int_t particle;

  AliRICHChamber*       iChamber;
  AliSegmentation*  segmentation;
  
  fList = new TObjArray;
    
  AliRICH *pRICH = (AliRICH *) gAlice->GetDetector("RICH");
  fHitMap= new AliHitMap* [kNCH];
    
  if (fMerge ) {
    fBgrFile->cd();
    //
    // Get Hits Tree header from file
    if(fHitsBgr) fHitsBgr->Clear();
    if(fSDigitsBgr) fSDigitsBgr->Clear();
    if(fTrH1) delete fTrH1;
    fTrH1 = 0;
      
    char treeName[20];
    sprintf(treeName,"TreeH%d",fEvNrBgr);
    fTrH1 = (TTree*)gDirectory->Get(treeName);
    if (!fTrH1) {
      printf("ERROR: cannot find Hits Tree for event:%d\n",fEvNrBgr);
    }
    //
    // Set branch addresses
    TBranch *branch;
    char branchname[20];
    sprintf(branchname,"%s",pRICH->GetName());
    if (fTrH1 && fHitsBgr) {
      branch = fTrH1->GetBranch(branchname);
      if (branch) branch->SetAddress(&fHitsBgr);
    }
    if (fTrH1 && fSDigitsBgr) {
      branch = fTrH1->GetBranch("RICHSDigits");
      if (branch) branch->SetAddress(&fSDigitsBgr);
    }
  }
    
  for (Int_t i =0; i<kNCH; i++) {
    iChamber= &(pRICH->Chamber(i));
    segmentation=iChamber->GetSegmentationModel();
    fHitMap[i] = new AliRICHHitMapA1(segmentation, fList);
  }
  //
  //   Loop over tracks
  //
    
  fSignal = kTRUE;
  fCounter = 0;
  TTree *treeH = pRICH->TreeH();
  Int_t ntracks =(Int_t) treeH->GetEntries();
  for (fTrack=0; fTrack<ntracks; fTrack++) {
    gAlice->ResetHits();
    treeH->GetEvent(fTrack);
    //
    //   Loop over hits
    for(AliRICHhit* mHit=(AliRICHhit*)pRICH->FirstHit(-1); 
	mHit;
	mHit=(AliRICHhit*)pRICH->NextHit()) 
    {
	  
      fNch = mHit->Chamber()-1;  // chamber number
      Int_t trackIndex = mHit->Track();
      if (fNch >= kNCH) {
	cerr<<"AliRICHMerger: chamber nr. fNch out of range: "<<fNch<<endl;
	cerr<<"               track: "<<fTrack<<endl;
	continue;
      }
      iChamber = &(pRICH->Chamber(fNch));
	  

// 
// If flag is set, create digits only for some particles
//
      TParticle *current = (TParticle*)gAlice->Particle(trackIndex);
      if (current->GetPdgCode() >= 50000050)
      {
	TParticle *motherofcurrent = (TParticle*)gAlice->Particle(current->GetFirstMother());
	particle = motherofcurrent->GetPdgCode();
      }
      else
      {
	particle = current->GetPdgCode();
      }

	  
      //printf("Flag:%d\n",flag);
      //printf("Track:%d\n",track);
      //printf("Particle:%d\n",particle);
	  
      Int_t digitise=1;
	  
      if (flag == 1) 
	if(TMath::Abs(particle)==211 || TMath::Abs(particle)==111)
	  digitise=0;
	  
      if (flag == 2)
	if(TMath::Abs(particle)==321 || TMath::Abs(particle)==130 || TMath::Abs(particle)==310 
	   || TMath::Abs(particle)==311)
	  digitise=0;
	  
      if (flag == 3 && TMath::Abs(particle)==2212)
	digitise=0;
	  
      if (flag == 4 && TMath::Abs(particle)==13)
	digitise=0;
	  
      if (flag == 5 && TMath::Abs(particle)==11)
	digitise=0;
	  
      if (flag == 6 && TMath::Abs(particle)==2112)
	digitise=0;
	  
	  
      //printf ("Particle: %d, Flag: %d, Digitise: %d\n",particle,flag,digitise); 
	  
	  
      if (digitise)
      {
	      
	//
	// Loop over pad hits
	for (AliRICHSDigit* mPad=
	       (AliRICHSDigit*)pRICH->FirstPad(mHit,pRICH->SDigits());
	     mPad;
	     mPad=(AliRICHSDigit*)pRICH->NextPad(pRICH->SDigits()))
	{
	  Int_t iqpad    = mPad->QPad();       // charge per pad
	  fDigits[0]=mPad->PadX();
	  fDigits[1]=mPad->PadY();
	  fDigits[2]=iqpad;
	  fDigits[3]=iqpad;
	  fDigits[4]=mPad->HitNumber();
		  
	  // build the list of fired pads and update the info
	  if (Exists(mPad)) {
	    Update(mPad);
	  } else {
	    CreateNew(mPad);
	  }
	} //end loop over clusters
      }// track type condition
    } // hit loop
  } // track loop
    
  // open the file with background
    
  if (fMerge) {
    fSignal = kFALSE;
    ntracks = (Int_t)fTrH1->GetEntries();
    //
    //   Loop over tracks
    //
    for (fTrack = 0; fTrack < ntracks; fTrack++) {
	
      if (fHitsBgr)       fHitsBgr->Clear();
      if (fSDigitsBgr)    fSDigitsBgr->Clear();
	
      fTrH1->GetEvent(fTrack);
      //
      //   Loop over hits
      AliRICHhit* mHit;
      for(Int_t i = 0; i < fHitsBgr->GetEntriesFast(); ++i) 
      {	
	mHit   = (AliRICHhit*) (*fHitsBgr)[i];
	fNch   = mHit->Chamber()-1;  // chamber number
	iChamber = &(pRICH->Chamber(fNch));

	//
	// Loop over pad hits
	for (AliRICHSDigit* mPad =
	       (AliRICHSDigit*)pRICH->FirstPad(mHit,fSDigitsBgr);
	     mPad;
	     mPad = (AliRICHSDigit*)pRICH->NextPad(fSDigitsBgr))
	{
	  fDigits[0] = mPad->PadX(); 
	  fDigits[1] = mPad->PadY();  
	  fDigits[2] = mPad->QPad();
	  fDigits[3] = 0;
	  fDigits[4] = -1; // set hit number to -1 for bgr
		
	  // build the list of fired pads and update the info
	  if (!Exists(mPad)) {
	    CreateNew(mPad);
	  } else {
	    Update(mPad);
	  } //  end if !Exists
	} //end loop over clusters
      } // hit loop
    } // track loop
      
    TTree *treeK = gAlice->TreeK();
    TFile *file = NULL;
      
    if (treeK) file = treeK->GetCurrentFile();
    file->cd();
  } // if fMerge
    
  Int_t tracks[kMAXTRACKSPERRICHDIGIT];
  Int_t charges[kMAXTRACKSPERRICHDIGIT];
  Int_t nentries=fList->GetEntriesFast();
    
  for (Int_t nent=0;nent<nentries;nent++) {
    AliRICHTransientDigit *transDigit=(AliRICHTransientDigit*)fList->At(nent);
    if (transDigit==0) continue; 
    Int_t ich=transDigit->GetChamber();
    Int_t q=transDigit->Signal(); 
    iChamber=&(pRICH->Chamber(ich));
    AliRICHResponse * response=iChamber->GetResponseModel();
    Int_t adcmax= (Int_t) response->MaxAdc();
      
      
    // add white noise and do zero-suppression and signal truncation (new electronics,old electronics gaus 1.2,0.2)
    //printf("Treshold: %d\n",iChamber->fTresh->GetHitIndex(transDigit->PadX(),transDigit->PadY()));
    Int_t pedestal = iChamber->fTresh->GetHitIndex(transDigit->PadX(),transDigit->PadY());

    //printf("Pedestal:%d\n",pedestal);
    //Int_t pedestal=0;
    Float_t treshold = (pedestal + 4*2.2);
      
    Float_t meanNoise = gRandom->Gaus(2.2, 0.3);
    Float_t noise     = gRandom->Gaus(0, meanNoise);
    q+=(Int_t)(noise + pedestal);
    //q+=(Int_t)(noise);
    //          magic number to be parametrised !!! 
    if ( q <= treshold) 
    {
      q = q - pedestal;
      continue;
    }
    q = q - pedestal;
    if ( q >= adcmax) q=adcmax;
    fDigits[0]=transDigit->PadX();
    fDigits[1]=transDigit->PadY();
    fDigits[2]=q;
    fDigits[3]=transDigit->Physics();
    fDigits[4]=transDigit->Hit();

    Int_t nptracks = transDigit->GetNTracks();  

    // this was changed to accomodate the real number of tracks
    if (nptracks > kMAXTRACKSPERRICHDIGIT) {
      printf("Attention - tracks > 10 %d\n",nptracks);
      nptracks=kMAXTRACKSPERRICHDIGIT;
    }
    if (nptracks > 2) {
      printf("Attention - tracks > 2  %d \n",nptracks);
      //printf("cat,ich,ix,iy,q %d %d %d %d %d \n",
      //icat,ich,digits[0],digits[1],q);
    }
    for (Int_t tr=0;tr<nptracks;tr++) {
      tracks[tr]=transDigit->GetTrack(tr);
      charges[tr]=transDigit->GetCharge(tr);
    }      //end loop over list of tracks for one pad
    if (nptracks < kMAXTRACKSPERRICHDIGIT ) {
      for (Int_t t=nptracks; t<kMAXTRACKSPERRICHDIGIT; t++) {
	tracks[t]=0;
	charges[t]=0;
      }
    }
    //write file
    //if (ich==2)
    //fprintf(points,"%4d,      %4d,      %4d\n",digits[0],digits[1],digits[2]);
      
    // fill digits
    pRICH->AddDigits(ich,tracks,charges,fDigits);
  }	
  gAlice->TreeD()->Fill();

  fList->Delete();
  for(Int_t ii=0;ii<kNCH;++ii) {
    if (fHitMap[ii]) {
      delete fHitMap[ii];
      fHitMap[ii]=0;
    }
  }
    
  TClonesArray *richDigits;
  for (Int_t k=0;k<kNCH;k++) {
    richDigits = pRICH->DigitsAddress(k);
    Int_t ndigit=richDigits->GetEntriesFast();
    printf ("Chamber %d digits %d \n",k,ndigit);
  }
  pRICH->ResetDigits(); /// ??? should it be here???
  gAlice->TreeD()->Write(0,TObject::kOverwrite);
  // reset tree
  //    gAlice->TreeD()->Reset();
  //    delete fList; // deleted in dtor
  // gObjectTable->Print();

}
Commit	Line	Data
d8a72780	1	/**************************************************************************
	2	* Copyright(c) 1998-2000, 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	**************************************************************************/
	15
88cb7938	16	/* $Id$ */
7118aef0	17
7118aef0	18	#include <Riostream.h>
d8a72780	19
d8a72780	20	#include <TTree.h>
d8a72780	21	#include <TObjArray.h>
	22	#include <TFile.h>
	23	#include <TDirectory.h>
	24	#include <TParticle.h>
	25
d8a72780	26	#include "AliRICHMerger.h"
	27	#include "AliRICHChamber.h"
	28	#include "AliHitMap.h"
	29	#include "AliRICHHitMapA1.h"
	30	#include "AliRICH.h"
d8a72780	31	#include "AliRICHSDigit.h"
	32	#include "AliRICHDigit.h"
	33	#include "AliRICHTransientDigit.h"
	34	#include "AliRun.h"
	35	#include "AliPDG.h"
	36
	37	ClassImp(AliRICHMerger)
	38
	39	//___________________________________________
b762c2f6	40	AliRICHMerger::AliRICHMerger()
d8a72780	41	{
d8a72780	42	// Default constructor
b762c2f6	43	fEvNrSig = 0;
	44	fEvNrBgr = 0;
	45	fMerge = kDigitize;
	46	fFnBgr = 0;
	47	fHitMap = 0;
	48	fList = 0;
	49	fTrH1 = 0;
	50	fHitsBgr = 0;
	51	fSDigitsBgr = 0;
	52	fHitMap = 0;
	53	fList = 0;
	54	fBgrFile = 0;
d8a72780	55	}
	56
	57	//------------------------------------------------------------------------
	58	AliRICHMerger::~AliRICHMerger()
	59	{
	60	// Destructor
b762c2f6	61	if (fTrH1) delete fTrH1;
	62	if (fHitsBgr) delete fHitsBgr;
	63	if (fSDigitsBgr) delete fSDigitsBgr;
	64	if (fHitMap) delete fHitMap;
	65	if (fList) delete fList;
	66	if (fBgrFile) delete fBgrFile;
d8a72780	67	}
	68
	69	//------------------------------------------------------------------------
b762c2f6	70	Bool_t AliRICHMerger::Exists(const AliRICHSDigit *padhit)
d8a72780	71	{
b762c2f6	72	return (fHitMap[fNch]->TestHit(padhit->PadX(),padhit->PadY()));
d8a72780	73	}
	74
	75	//------------------------------------------------------------------------
b762c2f6	76	void AliRICHMerger::Update(AliRICHSDigit *padhit)
d8a72780	77	{
b762c2f6	78	AliRICHTransientDigit *pdigit =
	79	static_cast<AliRICHTransientDigit*>(
	80	fHitMap[fNch]->GetHit(padhit->PadX(),padhit->PadY()));
	81
	82	// update charge
	83	//
	84	Int_t iqpad = Int_t(padhit->QPad()); // charge per pad
	85	pdigit->AddSignal(iqpad);
	86	pdigit->AddPhysicsSignal(iqpad);
	87
	88	// update list of tracks
	89	//
	90	Int_t track, charge;
	91	if (fSignal) {
	92	track = fTrack;
	93	charge = iqpad;
	94	} else {
	95	track = kBgTag;
	96	charge = kBgTag;
	97	}
	98	pdigit->UpdateTrackList(track,charge);
d8a72780	99	}
	100
	101	//------------------------------------------------------------------------
b762c2f6	102	void AliRICHMerger::CreateNew(AliRICHSDigit *padhit)
d8a72780	103	{
b762c2f6	104	fList->AddAtAndExpand(
	105	new AliRICHTransientDigit(fNch,fDigits),fCounter);
	106	fHitMap[fNch]->SetHit(padhit->PadX(),padhit->PadY(),fCounter);
	107
	108	AliRICHTransientDigit* pdigit =
	109	static_cast<AliRICHTransientDigit*>(fList->Last());
	110	// list of tracks
	111	Int_t track, charge;
	112	if (fSignal) {
	113	track = fTrack;
	114	charge = padhit->QPad();
	115	} else {
	116	track = kBgTag;
	117	charge = kBgTag;
	118	}
	119	pdigit->AddToTrackList(track,charge);
	120	fCounter++;
d8a72780	121	}
	122
	123
	124	//------------------------------------------------------------------------
	125	void AliRICHMerger::Init()
	126	{
	127	// Initialisation
	128
b762c2f6	129	if (fMerge && !fBgrFile) fBgrFile = InitBgr();
d8a72780	130	}
	131
	132
	133
	134	//------------------------------------------------------------------------
	135	TFile* AliRICHMerger::InitBgr()
	136	{
	137	// Initialise background event
b762c2f6	138	TFile *file = new TFile(fFnBgr);
d8a72780	139	// add error checking later
b762c2f6	140	printf("\n AliRICHMerger has opened %s file with background event \n", fFnBgr);
853634d3	141	fHitsBgr = new TClonesArray("AliRICHhit",1000);
b762c2f6	142	fSDigitsBgr = new TClonesArray("AliRICHSDigit",1000);
b762c2f6	143	return file;
d8a72780	144	}
	145
	146	//------------------------------------------------------------------------
	147	void AliRICHMerger::Digitise(Int_t nev, Int_t flag)
	148	{
	149
b762c2f6	150	// keep galice.root for signal and name differently the file for
b762c2f6	151	// background when add! otherwise the track info for signal will be lost !
cc23c5c6	152	nev++;//to remove warning
d8a72780	153	Int_t particle;
d8a72780	154
d8a72780	155	AliRICHChamber* iChamber;
	156	AliSegmentation* segmentation;
	157
b762c2f6	158	fList = new TObjArray;
d8a72780	159
b762c2f6	160	AliRICH pRICH = (AliRICH ) gAlice->GetDetector("RICH");
b762c2f6	161	fHitMap= new AliHitMap* [kNCH];
d8a72780	162
b762c2f6	163	if (fMerge ) {
	164	fBgrFile->cd();
	165	//
	166	// Get Hits Tree header from file
	167	if(fHitsBgr) fHitsBgr->Clear();
	168	if(fSDigitsBgr) fSDigitsBgr->Clear();
	169	if(fTrH1) delete fTrH1;
	170	fTrH1 = 0;
d8a72780	171
b762c2f6	172	char treeName[20];
	173	sprintf(treeName,"TreeH%d",fEvNrBgr);
	174	fTrH1 = (TTree*)gDirectory->Get(treeName);
	175	if (!fTrH1) {
	176	printf("ERROR: cannot find Hits Tree for event:%d\n",fEvNrBgr);
d8a72780	177	}
d8a72780	178	//
b762c2f6	179	// Set branch addresses
	180	TBranch *branch;
	181	char branchname[20];
	182	sprintf(branchname,"%s",pRICH->GetName());
	183	if (fTrH1 && fHitsBgr) {
	184	branch = fTrH1->GetBranch(branchname);
	185	if (branch) branch->SetAddress(&fHitsBgr);
	186	}
	187	if (fTrH1 && fSDigitsBgr) {
	188	branch = fTrH1->GetBranch("RICHSDigits");
	189	if (branch) branch->SetAddress(&fSDigitsBgr);
	190	}
	191	}
d8a72780	192
b762c2f6	193	for (Int_t i =0; i<kNCH; i++) {
b762c2f6	194	iChamber= &(pRICH->Chamber(i));
cc23c5c6	195	segmentation=iChamber->GetSegmentationModel();
b762c2f6	196	fHitMap[i] = new AliRICHHitMapA1(segmentation, fList);
	197	}
	198	//
	199	// Loop over tracks
	200	//
	201
	202	fSignal = kTRUE;
	203	fCounter = 0;
88cb7938	204	TTree *treeH = pRICH->TreeH();
b762c2f6	205	Int_t ntracks =(Int_t) treeH->GetEntries();
	206	for (fTrack=0; fTrack<ntracks; fTrack++) {
	207	gAlice->ResetHits();
	208	treeH->GetEvent(fTrack);
	209	//
	210	// Loop over hits
853634d3	211	for(AliRICHhit* mHit=(AliRICHhit*)pRICH->FirstHit(-1);
b762c2f6	212	mHit;
853634d3	213	mHit=(AliRICHhit*)pRICH->NextHit())
b762c2f6	214	{
d8a72780	215
b762c2f6	216	fNch = mHit->Chamber()-1; // chamber number
	217	Int_t trackIndex = mHit->Track();
	218	if (fNch >= kNCH) {
	219	cerr<<"AliRICHMerger: chamber nr. fNch out of range: "<<fNch<<endl;
	220	cerr<<" track: "<<fTrack<<endl;
	221	continue;
	222	}
	223	iChamber = &(pRICH->Chamber(fNch));
d8a72780	224
b762c2f6	225
	226	//
	227	// If flag is set, create digits only for some particles
	228	//
	229	TParticle current = (TParticle)gAlice->Particle(trackIndex);
	230	if (current->GetPdgCode() >= 50000050)
	231	{
	232	TParticle motherofcurrent = (TParticle)gAlice->Particle(current->GetFirstMother());
	233	particle = motherofcurrent->GetPdgCode();
	234	}
	235	else
	236	{
	237	particle = current->GetPdgCode();
	238	}
d8a72780	239
d8a72780	240
b762c2f6	241	//printf("Flag:%d\n",flag);
	242	//printf("Track:%d\n",track);
	243	//printf("Particle:%d\n",particle);
d8a72780	244
b762c2f6	245	Int_t digitise=1;
d8a72780	246
b762c2f6	247	if (flag == 1)
	248	if(TMath::Abs(particle)==211 \|\| TMath::Abs(particle)==111)
	249	digitise=0;
d8a72780	250
b762c2f6	251	if (flag == 2)
	252	if(TMath::Abs(particle)==321 \|\| TMath::Abs(particle)==130 \|\| TMath::Abs(particle)==310
	253	\|\| TMath::Abs(particle)==311)
	254	digitise=0;
d8a72780	255
b762c2f6	256	if (flag == 3 && TMath::Abs(particle)==2212)
b762c2f6	257	digitise=0;
d8a72780	258
b762c2f6	259	if (flag == 4 && TMath::Abs(particle)==13)
b762c2f6	260	digitise=0;
d8a72780	261
b762c2f6	262	if (flag == 5 && TMath::Abs(particle)==11)
b762c2f6	263	digitise=0;
d8a72780	264
b762c2f6	265	if (flag == 6 && TMath::Abs(particle)==2112)
b762c2f6	266	digitise=0;
d8a72780	267
d8a72780	268
b762c2f6	269	//printf ("Particle: %d, Flag: %d, Digitise: %d\n",particle,flag,digitise);
d8a72780	270
d8a72780	271
b762c2f6	272	if (digitise)
b762c2f6	273	{
d8a72780	274
b762c2f6	275	//
	276	// Loop over pad hits
	277	for (AliRICHSDigit* mPad=
	278	(AliRICHSDigit*)pRICH->FirstPad(mHit,pRICH->SDigits());
	279	mPad;
	280	mPad=(AliRICHSDigit*)pRICH->NextPad(pRICH->SDigits()))
	281	{
	282	Int_t iqpad = mPad->QPad(); // charge per pad
	283	fDigits[0]=mPad->PadX();
	284	fDigits[1]=mPad->PadY();
	285	fDigits[2]=iqpad;
	286	fDigits[3]=iqpad;
	287	fDigits[4]=mPad->HitNumber();
d8a72780	288
b762c2f6	289	// build the list of fired pads and update the info
	290	if (Exists(mPad)) {
	291	Update(mPad);
	292	} else {
	293	CreateNew(mPad);
	294	}
	295	} //end loop over clusters
	296	}// track type condition
	297	} // hit loop
	298	} // track loop
d8a72780	299
b762c2f6	300	// open the file with background
d8a72780	301
b762c2f6	302	if (fMerge) {
	303	fSignal = kFALSE;
	304	ntracks = (Int_t)fTrH1->GetEntries();
	305	//
	306	// Loop over tracks
	307	//
	308	for (fTrack = 0; fTrack < ntracks; fTrack++) {
d8a72780	309
b762c2f6	310	if (fHitsBgr) fHitsBgr->Clear();
b762c2f6	311	if (fSDigitsBgr) fSDigitsBgr->Clear();
d8a72780	312
b762c2f6	313	fTrH1->GetEvent(fTrack);
	314	//
	315	// Loop over hits
853634d3	316	AliRICHhit* mHit;
b762c2f6	317	for(Int_t i = 0; i < fHitsBgr->GetEntriesFast(); ++i)
b762c2f6	318	{
853634d3	319	mHit = (AliRICHhit) (fHitsBgr)[i];
b762c2f6	320	fNch = mHit->Chamber()-1; // chamber number
	321	iChamber = &(pRICH->Chamber(fNch));
	322
d8a72780	323	//
b762c2f6	324	// Loop over pad hits
	325	for (AliRICHSDigit* mPad =
	326	(AliRICHSDigit*)pRICH->FirstPad(mHit,fSDigitsBgr);
	327	mPad;
	328	mPad = (AliRICHSDigit*)pRICH->NextPad(fSDigitsBgr))
	329	{
	330	fDigits[0] = mPad->PadX();
	331	fDigits[1] = mPad->PadY();
	332	fDigits[2] = mPad->QPad();
	333	fDigits[3] = 0;
	334	fDigits[4] = -1; // set hit number to -1 for bgr
d8a72780	335
b762c2f6	336	// build the list of fired pads and update the info
	337	if (!Exists(mPad)) {
	338	CreateNew(mPad);
	339	} else {
	340	Update(mPad);
	341	} // end if !Exists
	342	} //end loop over clusters
	343	} // hit loop
	344	} // track loop
d8a72780	345
b762c2f6	346	TTree *treeK = gAlice->TreeK();
b762c2f6	347	TFile *file = NULL;
d8a72780	348
b762c2f6	349	if (treeK) file = treeK->GetCurrentFile();
	350	file->cd();
	351	} // if fMerge
d8a72780	352
b762c2f6	353	Int_t tracks[kMAXTRACKSPERRICHDIGIT];
	354	Int_t charges[kMAXTRACKSPERRICHDIGIT];
	355	Int_t nentries=fList->GetEntriesFast();
d8a72780	356
b762c2f6	357	for (Int_t nent=0;nent<nentries;nent++) {
	358	AliRICHTransientDigit transDigit=(AliRICHTransientDigit)fList->At(nent);
	359	if (transDigit==0) continue;
	360	Int_t ich=transDigit->GetChamber();
	361	Int_t q=transDigit->Signal();
	362	iChamber=&(pRICH->Chamber(ich));
	363	AliRICHResponse * response=iChamber->GetResponseModel();
	364	Int_t adcmax= (Int_t) response->MaxAdc();
d8a72780	365
d8a72780	366
b762c2f6	367	// add white noise and do zero-suppression and signal truncation (new electronics,old electronics gaus 1.2,0.2)
	368	//printf("Treshold: %d\n",iChamber->fTresh->GetHitIndex(transDigit->PadX(),transDigit->PadY()));
	369	Int_t pedestal = iChamber->fTresh->GetHitIndex(transDigit->PadX(),transDigit->PadY());
d8a72780	370
b762c2f6	371	//printf("Pedestal:%d\n",pedestal);
	372	//Int_t pedestal=0;
	373	Float_t treshold = (pedestal + 4*2.2);
d8a72780	374
b762c2f6	375	Float_t meanNoise = gRandom->Gaus(2.2, 0.3);
	376	Float_t noise = gRandom->Gaus(0, meanNoise);
	377	q+=(Int_t)(noise + pedestal);
	378	//q+=(Int_t)(noise);
	379	// magic number to be parametrised !!!
	380	if ( q <= treshold)
	381	{
d8a72780	382	q = q - pedestal;
b762c2f6	383	continue;
	384	}
	385	q = q - pedestal;
	386	if ( q >= adcmax) q=adcmax;
	387	fDigits[0]=transDigit->PadX();
	388	fDigits[1]=transDigit->PadY();
	389	fDigits[2]=q;
	390	fDigits[3]=transDigit->Physics();
	391	fDigits[4]=transDigit->Hit();
	392
	393	Int_t nptracks = transDigit->GetNTracks();
	394
	395	// this was changed to accomodate the real number of tracks
	396	if (nptracks > kMAXTRACKSPERRICHDIGIT) {
	397	printf("Attention - tracks > 10 %d\n",nptracks);
	398	nptracks=kMAXTRACKSPERRICHDIGIT;
	399	}
	400	if (nptracks > 2) {
	401	printf("Attention - tracks > 2 %d \n",nptracks);
	402	//printf("cat,ich,ix,iy,q %d %d %d %d %d \n",
	403	//icat,ich,digits[0],digits[1],q);
	404	}
	405	for (Int_t tr=0;tr<nptracks;tr++) {
	406	tracks[tr]=transDigit->GetTrack(tr);
	407	charges[tr]=transDigit->GetCharge(tr);
	408	} //end loop over list of tracks for one pad
	409	if (nptracks < kMAXTRACKSPERRICHDIGIT ) {
	410	for (Int_t t=nptracks; t<kMAXTRACKSPERRICHDIGIT; t++) {
	411	tracks[t]=0;
	412	charges[t]=0;
d8a72780	413	}
b762c2f6	414	}
	415	//write file
	416	//if (ich==2)
	417	//fprintf(points,"%4d, %4d, %4d\n",digits[0],digits[1],digits[2]);
d8a72780	418
b762c2f6	419	// fill digits
	420	pRICH->AddDigits(ich,tracks,charges,fDigits);
	421	}
	422	gAlice->TreeD()->Fill();
	423
	424	fList->Delete();
	425	for(Int_t ii=0;ii<kNCH;++ii) {
	426	if (fHitMap[ii]) {
	427	delete fHitMap[ii];
	428	fHitMap[ii]=0;
d8a72780	429	}
b762c2f6	430	}
d8a72780	431
b762c2f6	432	TClonesArray *richDigits;
	433	for (Int_t k=0;k<kNCH;k++) {
	434	richDigits = pRICH->DigitsAddress(k);
	435	Int_t ndigit=richDigits->GetEntriesFast();
	436	printf ("Chamber %d digits %d \n",k,ndigit);
	437	}
	438	pRICH->ResetDigits(); /// ??? should it be here???
	439	gAlice->TreeD()->Write(0,TObject::kOverwrite);
	440	// reset tree
	441	// gAlice->TreeD()->Reset();
	442	// delete fList; // deleted in dtor
	443	// gObjectTable->Print();
d8a72780	444
d8a72780	445	}