[u/mrichter/AliRoot.git] / ZDC / AliZDCDigitizer.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.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  			ZDC digitizer class                                  //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#include <stdlib.h>

// --- ROOT system
#include <TTree.h>
#include <TFile.h>
#include <TNtuple.h>
#include <TRandom.h>

// --- AliRoot header files
#include "AliLog.h"
#include "AliRun.h"
#include "AliHeader.h"
#include "AliGenHijingEventHeader.h"
#include "AliRunDigitizer.h"
#include "AliRunLoader.h"
#include "AliCDBManager.h"
#include "AliCDBEntry.h"
#include "AliZDCSDigit.h"
#include "AliZDCDigit.h"
#include "AliZDCFragment.h"
#include "AliZDCDigitizer.h"

class AliCDBStorage;
class AliZDCCalibData;

ClassImp(AliZDCDigitizer)


//____________________________________________________________________________
AliZDCDigitizer::AliZDCDigitizer()
{
// Default constructor    

}

//____________________________________________________________________________
AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
  AliDigitizer(manager)
{
  fIsCalibration=0; //By default the simulation doesn't create calib. data
//  fIsCalibration=1; //To create calib. data
  // Get calibration data
  fCalibData = GetCalibData(); 
  if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");

}

//____________________________________________________________________________
AliZDCDigitizer::~AliZDCDigitizer()
{
// Destructor

}


//____________________________________________________________________________
AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
  AliDigitizer()
{
  // Copy constructor

  for(Int_t i=0; i<6; i++){
     for(Int_t j=0; j<5; j++){
        fPMGain[i][j]   = digitizer.fPMGain[i][j];           
     }
  }
  for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
  fIsCalibration = digitizer.fIsCalibration;
  fCalibData = digitizer.fCalibData;

}

//____________________________________________________________________________
Bool_t AliZDCDigitizer::Init()
{
  // Initialize the digitizer
  // NB -> PM gain vs. HV & ADC resolutions will move to DCDB ***************
   for(Int_t j = 0; j < 5; j++){
     fPMGain[0][j] = 50000.;
     fPMGain[1][j] = 100000.;
     fPMGain[2][j] = 100000.;
     fPMGain[3][j] = 50000.;
     fPMGain[4][j] = 100000.;
     fPMGain[5][j] = 100000.;
   }
   // ADC Caen V965
  fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
  fADCRes[1] = 0.0000064; // ADC Resolution low gain:  25  fC/adcCh

  return kTRUE;
}

//____________________________________________________________________________
void AliZDCDigitizer::Exec(Option_t* /*option*/)
{
  // Execute digitization

  // ------------------------------------------------------------
  // !!! 2nd ZDC set added 
  // *** 1st 3 arrays are digits from REAL (simulated) hits
  // *** last 2 are copied from simulated digits
  // --- pm[0][...] = light in ZN right  [C, Q1, Q2, Q3, Q4]
  // --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4]
  // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
  // --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW!
  // --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW!
  // ------------------------------------------------------------
  Float_t pm[5][5]; 
  for(Int_t iSector1=0; iSector1<5; iSector1++) 
    for(Int_t iSector2=0; iSector2<5; iSector2++){
      pm[iSector1][iSector2] = 0;
    }
    
  // ------------------------------------------------------------
  // ### Out of time ADC added (22 channels)
  // --- same codification as for signal PTMs (see above)
  // ------------------------------------------------------------
  Float_t pmoot[5][5];
  for(Int_t iSector1=0; iSector1<5; iSector1++) 
    for(Int_t iSector2=0; iSector2<5; iSector2++){
      pmoot[iSector1][iSector2] = 0;
    }

  // impact parameter and number of spectators
  Float_t impPar = -1;
  Int_t specN = 0;
  Int_t specP = 0;

  // loop over input streams
  for(Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){

    // get run loader and ZDC loader
    AliRunLoader* runLoader = 
      AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
    AliLoader* loader = runLoader->GetLoader("ZDCLoader");
    if(!loader) continue;

    // load sdigits
    loader->LoadSDigits();
    TTree* treeS = loader->TreeS();
    if(!treeS) continue;
    AliZDCSDigit sdigit;
    AliZDCSDigit* psdigit = &sdigit;
    treeS->SetBranchAddress("ZDC", &psdigit);

    // loop over sdigits
    for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
      treeS->GetEntry(iSDigit);
      //
      if(!psdigit) continue;
      if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
	AliError(Form("\nsector[0] = %d, sector[1] = %d\n", 
                      sdigit.GetSector(0), sdigit.GetSector(1)));
	continue;
      }
      //
      pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
      /*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
      	  sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
      	  sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging!
      */
    }

    loader->UnloadSDigits();

    // get the impact parameter and the number of spectators in case of hijing
    if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
    AliHeader* header = runLoader->GetAliRun()->GetHeader();
    if(!header) continue;
    AliGenEventHeader* genHeader = header->GenEventHeader();
    if(!genHeader) continue;
    if(!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue;
    impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
    // 
    specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
    specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
    AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n",
                     impPar, specN, specP));
    printf("\n\t AliZDCDigitizer -> b = %f fm, # generated spectator n = %d," 
    " # generated spectator p = %d\n", impPar, specN, specP);
  }

  // add spectators
  if(impPar >= 0) {
    Int_t freeSpecN, freeSpecP;
    Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP);
    printf("\n\t AliZDCDigitizer -> Adding signal for %d free spectator n\n",freeSpecN);
    SpectatorSignal(1, freeSpecN, pm);
    printf("\t AliZDCDigitizer -> Adding signal for %d free spectator p\n\n",freeSpecP);
    SpectatorSignal(2, freeSpecP, pm);
  }


  // get the output run loader and loader
  AliRunLoader* runLoader = 
    AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
  AliLoader* loader = runLoader->GetLoader("ZDCLoader");
  if(!loader) {
    AliError("no ZDC loader found");
    return;
  }

  // create the output tree
  const char* mode = "update";
  if(runLoader->GetEventNumber() == 0) mode = "recreate";
  loader->LoadDigits(mode);
  loader->MakeTree("D");
  TTree* treeD = loader->TreeD();
  AliZDCDigit digit;
  AliZDCDigit* pdigit = &digit;
  const Int_t kBufferSize = 4000;
  treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);

  // Create digits
  Int_t sector[2], sectorL[2];
  Int_t digi[2], digiL[2], digioot[2];
  for(sector[0]=1; sector[0]<=3; sector[0]++){
    for(sector[1]=0; sector[1]<5; sector[1]++){
        if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
        for(Int_t res=0; res<2; res++){
           digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res) 
	            + Pedestal(sector[0], sector[1], res);
      	}
	/*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	     sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
	*/
	//
	new(pdigit) AliZDCDigit(sector, digi);
        treeD->Fill();
	//
	// --- Adding digits for 2nd ZDC set (left side w.r.t. IP) ---
	// --- they are copied from right ZDC digits
	if(sector[0]==1 || sector[0]==2){
	   sectorL[0] = sector[0]+3;
	   sectorL[1] = sector[1];
           for(Int_t res=0; res<2; res++){
             digiL[res] = Phe2ADCch(sectorL[0], sectorL[1], pm[sector[0]-1][sector[1]], res) 
	            + Pedestal(sectorL[0], sectorL[1], res);
      	   }
	   /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	         sectorL[0], sectorL[1], digiL[0], digiL[1]); // Chiara debugging!
	   */
	   //
	   new(pdigit) AliZDCDigit(sectorL, digiL);
           treeD->Fill();
	}
    }
  } // Loop over detector
  // Adding in-time digits for 2 reference PTM signals (after signal ch.)
  // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
  Int_t sectorRef[2];
  sectorRef[1] = 5;
  Int_t sigRef[2];
  if(fIsCalibration==0) {sigRef[0]=100;  sigRef[1]=800;}
  else {sigRef[0]=0;  sigRef[1]=0;}
  //
  for(Int_t iref=0; iref<2; iref++){
     sectorRef[0] = 3*iref+1;
     for(Int_t res=0; res<2; res++){
       sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
     }
     /*printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
         sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
     */
     new(pdigit) AliZDCDigit(sectorRef, sigRef);
     treeD->Fill();     
  }
  //
  // --- Adding digits for out-of-time channels after signal digits
  for(sector[0]=1; sector[0]<=3; sector[0]++){
    for(sector[1]=0; sector[1]<5; sector[1]++){
        if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
        for(Int_t res=0; res<2; res++){
           digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
      	}
	/*printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	     sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
	*/
	//
	new(pdigit) AliZDCDigit(sector, digioot);
        treeD->Fill();
	//
	if(sector[0]==1 || sector[0]==2){
	   sectorL[0] = sector[0]+3;
	   sectorL[1] = sector[1];
           for(Int_t res=0; res<2; res++){
             digioot[res] = Pedestal(sectorL[0], sectorL[1], res); // out-of-time ADCs
      	   }
	   /*printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	         sectorL[0], sectorL[1], digioot[0], digioot[1]); // Chiara debugging!
	   */
	   //
	   new(pdigit) AliZDCDigit(sectorL, digioot);
           treeD->Fill();
	}
	//
    }
  }
  // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
  Int_t sigRefoot[2];
  for(Int_t iref=0; iref<2; iref++){
     sectorRef[0] = 3*iref+1;
     for(Int_t res=0; res<2; res++){
       sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
     }
     /*printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
         sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
     */
     new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
     treeD->Fill();
     
  }
  //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());

  // write the output tree
  loader->WriteDigits("OVERWRITE");
  loader->UnloadDigits();
}


//_____________________________________________________________________________
void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
                                    Int_t &freeSpecN, Int_t &freeSpecP) const
{
// simulate fragmentation of spectators

  Int_t zz[100], nn[100];
  AliZDCFragment frag(impPar);
  for(Int_t j=0; j<=99; j++){
     zz[j] =0;
     nn[j] =0;
  }

  // Fragments generation
  Int_t nAlpha;
  frag.GenerateIMF(zz, nAlpha);

  // Attach neutrons
  Int_t ztot=0;
  Int_t ntot=0;
  frag.AttachNeutrons(zz, nn, ztot, ntot);
  freeSpecN = specN-ntot-2*nAlpha;
  freeSpecP = specP-ztot-2*nAlpha;
  // Removing deuterons
  Int_t ndeu = (Int_t) (frag.DeuteronNumber());
  freeSpecN -= ndeu;
  //
  if(freeSpecN<0) freeSpecN=0;
  if(freeSpecP<0) freeSpecP=0;
  AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
}

//_____________________________________________________________________________
void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents, 
                                      Float_t pm[3][5]) const
{
// add signal of the spectators
 
  TFile* file = NULL;
  if(SpecType == 1) {		// --- Signal for spectator neutrons
    file = TFile::Open("$ALICE_ROOT/ZDC/ZNsignalntu.root");
  } else if(SpecType == 2) {	// --- Signal for spectator protons
    file = TFile::Open("$ALICE_ROOT/ZDC/ZPsignalntu.root");
  }
  if(!file || !file->IsOpen()) {
    AliError("Opening of file failed");
    return;
  }

  TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal");
  Int_t nentries = (Int_t) zdcSignal->GetEntries();
  
  Float_t *entry, hitsSpec[7];
  Int_t pl, i, j, k, iev=0, rnd[125], volume[2];
  for(pl=0;pl<125;pl++) rnd[pl] = 0;
  if(numEvents > 125) {
    AliWarning(Form("numEvents (%d) is larger than 125", numEvents));
    numEvents = 125;
  }
  for(pl=0;pl<numEvents;pl++){
     rnd[pl] = (Int_t) (9999*gRandom->Rndm());
     if(rnd[pl] >= 9999) rnd[pl] = 9998;
     //printf("	rnd[%d] = %d\n",pl,rnd[pl]);     
  }
  // Sorting vector in ascending order with C function QSORT 
  qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
  do{
     for(i=0; i<nentries; i++){  
  	zdcSignal->GetEvent(i);
  	entry = zdcSignal->GetArgs();
  	if(entry[0] == rnd[iev]){
          for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
          for(j=0; j<7; j++) hitsSpec[j] = entry[j+3];
	  //
	  Float_t lightQ = hitsSpec[4];
	  Float_t lightC = hitsSpec[5];
	  AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f",
                           volume[0], volume[1], lightQ, lightC));
	  //printf("\n   Volume = (%d, %d), lightQ = %.0f, lightC = %.0f",
          //                 volume[0], volume[1], lightQ, lightC);
	  if(volume[0] < 3) {  // ZN or ZP
            pm[volume[0]-1][0] += lightC;
            pm[volume[0]-1][volume[1]] += lightQ;
	    //printf("\n   pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
	    //	(volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
	  } 
	  else { 
            if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
            else                pm[2][2] += lightQ; // ZEM 2
	    //printf("\n   pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
	  }
  	}
  	else if(entry[0] > rnd[iev]){
	  iev++;
	  continue;
	}
     }
  }while(iev<numEvents);
  
  file->Close();
  delete file;
}


//_____________________________________________________________________________
Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light, 
                                 Int_t Res) const
{
  // Evaluation of the ADC channel corresponding to the light yield Light
  Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
  //printf("\t Phe2ADCch -> det %d quad %d - phe %.0f  ADC %d\n", Det,Quad,Light,ADCch);

  return vADCch;
}

//_____________________________________________________________________________
Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
{
  // Returns a pedestal for detector det, PM quad, channel with res.
  //
  Float_t pedValue;
  
  // Normal run
  if(fIsCalibration == 0){
    Float_t meanPed, pedWidth;
    Int_t index=0;
    if(Quad!=5){
      if(Det==1 || Det==2)	index = 10*(Det-1)+Quad+5*Res;	 // ZN1, ZP1
      else if(Det==3)		index = 10*(Det-1)+(Quad-1)+Res; // ZEM
      else if(Det==4 || Det==5)	index = 10*(Det-2)+Quad+5*Res+4; // ZN2, ZP2
    }
    else index = 10*(Quad-1)+(Det-1)*1/3+2*Res+4; // Reference PMs
    //
    meanPed = fCalibData->GetMeanPed(index);
    pedWidth = fCalibData->GetMeanPedWidth(index);
    pedValue = gRandom->Gaus(meanPed,pedWidth);
    //
    /*printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n",
  	Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
    */
  }
  // To create calibration object
  else{
    if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
    else  pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
  }

  return (Int_t) pedValue;
}

//_____________________________________________________________________________
AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri) 
{

  Bool_t deleteManager = kFALSE;
  
  AliCDBManager *manager = AliCDBManager::Instance();
  AliCDBStorage *defstorage = manager->GetDefaultStorage();
  
  if(!defstorage || !(defstorage->Contains("ZDC"))){ 
     AliWarning("No default storage set or default storage doesn't contain ZDC!");
     manager->SetDefaultStorage(uri);
     deleteManager = kTRUE;
  }
 
  AliCDBStorage *storage = manager->GetDefaultStorage();

  if(deleteManager){
    AliCDBManager::Instance()->UnsetDefaultStorage();
    defstorage = 0;   // the storage is killed by AliCDBManager::Instance()->Destroy()
  }

  return storage; 
}

//_____________________________________________________________________________
AliZDCCalibData* AliZDCDigitizer::GetCalibData() const
{

  // Getting calibration object for ZDC set

  AliCDBEntry  *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data");
  if(!entry) AliFatal("No calibration data loaded!");  

  AliZDCCalibData *calibdata = dynamic_cast<AliZDCCalibData*>  (entry->GetObject());
  if(!calibdata)  AliFatal("Wrong calibration object in calibration  file!");

  return calibdata;
}
Commit	Line	Data
8309c1ab	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	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	///////////////////////////////////////////////////////////////////////////////
	19	// //
	20	// ZDC digitizer class //
	21	// //
	22	///////////////////////////////////////////////////////////////////////////////
	23
	24	#include <stdlib.h>
	25
	26	// --- ROOT system
	27	#include <TTree.h>
	28	#include <TFile.h>
	29	#include <TNtuple.h>
	30	#include <TRandom.h>
	31
	32	// --- AliRoot header files
	33	#include "AliLog.h"
	34	#include "AliRun.h"
	35	#include "AliHeader.h"
	36	#include "AliGenHijingEventHeader.h"
	37	#include "AliRunDigitizer.h"
	38	#include "AliRunLoader.h"
78d18275	39	#include "AliCDBManager.h"
48642b09	40	#include "AliCDBEntry.h"
8309c1ab	41	#include "AliZDCSDigit.h"
	42	#include "AliZDCDigit.h"
	43	#include "AliZDCFragment.h"
	44	#include "AliZDCDigitizer.h"
8a2624cc	45
	46	class AliCDBStorage;
	47	class AliZDCCalibData;
8309c1ab	48
	49	ClassImp(AliZDCDigitizer)
	50
	51
	52	//____________________________________________________________________________
	53	AliZDCDigitizer::AliZDCDigitizer()
	54	{
	55	// Default constructor
	56
	57	}
	58
	59	//____________________________________________________________________________
	60	AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
	61	AliDigitizer(manager)
	62	{
abf60186	63	fIsCalibration=0; //By default the simulation doesn't create calib. data
9d38ced8	64	// fIsCalibration=1; //To create calib. data
78d18275	65	// Get calibration data
7f73eb6b	66	fCalibData = GetCalibData();
d27e20dd	67	if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
78d18275	68
8309c1ab	69	}
	70
	71	//____________________________________________________________________________
	72	AliZDCDigitizer::~AliZDCDigitizer()
	73	{
	74	// Destructor
	75
	76	}
	77
	78
cc2abffd	79	//____________________________________________________________________________
	80	AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
	81	AliDigitizer()
	82	{
	83	// Copy constructor
	84
	85	for(Int_t i=0; i<6; i++){
	86	for(Int_t j=0; j<5; j++){
	87	fPMGain[i][j] = digitizer.fPMGain[i][j];
	88	}
	89	}
	90	for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
	91	fIsCalibration = digitizer.fIsCalibration;
	92	fCalibData = digitizer.fCalibData;
	93
	94	}
	95
8309c1ab	96	//____________________________________________________________________________
	97	Bool_t AliZDCDigitizer::Init()
	98	{
48642b09	99	// Initialize the digitizer
48642b09	100	// NB -> PM gain vs. HV & ADC resolutions will move to DCDB ***************
7f73eb6b	101	for(Int_t j = 0; j < 5; j++){
	102	fPMGain[0][j] = 50000.;
	103	fPMGain[1][j] = 100000.;
	104	fPMGain[2][j] = 100000.;
a017f01b	105	fPMGain[3][j] = 50000.;
	106	fPMGain[4][j] = 100000.;
	107	fPMGain[5][j] = 100000.;
7f73eb6b	108	}
	109	// ADC Caen V965
	110	fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
	111	fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
8309c1ab	112
	113	return kTRUE;
	114	}
	115
	116	//____________________________________________________________________________
	117	void AliZDCDigitizer::Exec(Option_t* /option/)
	118	{
48642b09	119	// Execute digitization
8309c1ab	120
d79f8d50	121	// ------------------------------------------------------------
83347831	122	// !!! 2nd ZDC set added
7f73eb6b	123	// *** 1st 3 arrays are digits from REAL (simulated) hits
	124	// *** last 2 are copied from simulated digits
	125	// --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4]
	126	// --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4]
48642b09	127	// --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
7f73eb6b	128	// --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW!
7f73eb6b	129	// --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW!
d79f8d50	130	// ------------------------------------------------------------
d79f8d50	131	Float_t pm[5][5];
8574b308	132	for(Int_t iSector1=0; iSector1<5; iSector1++)
8574b308	133	for(Int_t iSector2=0; iSector2<5; iSector2++){
8309c1ab	134	pm[iSector1][iSector2] = 0;
8309c1ab	135	}
d79f8d50	136
	137	// ------------------------------------------------------------
	138	// ### Out of time ADC added (22 channels)
	139	// --- same codification as for signal PTMs (see above)
	140	// ------------------------------------------------------------
	141	Float_t pmoot[5][5];
8574b308	142	for(Int_t iSector1=0; iSector1<5; iSector1++)
8574b308	143	for(Int_t iSector2=0; iSector2<5; iSector2++){
d79f8d50	144	pmoot[iSector1][iSector2] = 0;
d79f8d50	145	}
8309c1ab	146
	147	// impact parameter and number of spectators
	148	Float_t impPar = -1;
	149	Int_t specN = 0;
	150	Int_t specP = 0;
	151
	152	// loop over input streams
8574b308	153	for(Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){
8309c1ab	154
	155	// get run loader and ZDC loader
	156	AliRunLoader* runLoader =
	157	AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
	158	AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308	159	if(!loader) continue;
8309c1ab	160
	161	// load sdigits
	162	loader->LoadSDigits();
	163	TTree* treeS = loader->TreeS();
8574b308	164	if(!treeS) continue;
8309c1ab	165	AliZDCSDigit sdigit;
	166	AliZDCSDigit* psdigit = &sdigit;
	167	treeS->SetBranchAddress("ZDC", &psdigit);
	168
	169	// loop over sdigits
8574b308	170	for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
8309c1ab	171	treeS->GetEntry(iSDigit);
7f73eb6b	172	//
8574b308	173	if(!psdigit) continue;
8574b308	174	if((sdigit.GetSector(1) < 0) \|\| (sdigit.GetSector(1) > 4)){
8309c1ab	175	AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
	176	sdigit.GetSector(0), sdigit.GetSector(1)));
	177	continue;
	178	}
7f73eb6b	179	//
48642b09	180	pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
7f73eb6b	181	/*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
48642b09	182	sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
48642b09	183	sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging!
abf60186	184	*/
8309c1ab	185	}
8309c1ab	186
8309c1ab	187	loader->UnloadSDigits();
	188
	189	// get the impact parameter and the number of spectators in case of hijing
8574b308	190	if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
8309c1ab	191	AliHeader* header = runLoader->GetAliRun()->GetHeader();
8574b308	192	if(!header) continue;
8309c1ab	193	AliGenEventHeader* genHeader = header->GenEventHeader();
8574b308	194	if(!genHeader) continue;
8574b308	195	if(!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue;
8309c1ab	196	impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
85a96223	197	//
	198	specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
	199	specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
78d18275	200	AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n",
8309c1ab	201	impPar, specN, specP));
d27e20dd	202	printf("\n\t AliZDCDigitizer -> b = %f fm, # generated spectator n = %d,"
d27e20dd	203	" # generated spectator p = %d\n", impPar, specN, specP);
8309c1ab	204	}
	205
	206	// add spectators
8574b308	207	if(impPar >= 0) {
8309c1ab	208	Int_t freeSpecN, freeSpecP;
8309c1ab	209	Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP);
d27e20dd	210	printf("\n\t AliZDCDigitizer -> Adding signal for %d free spectator n\n",freeSpecN);
8309c1ab	211	SpectatorSignal(1, freeSpecN, pm);
d27e20dd	212	printf("\t AliZDCDigitizer -> Adding signal for %d free spectator p\n\n",freeSpecP);
8309c1ab	213	SpectatorSignal(2, freeSpecP, pm);
	214	}
	215
8a2624cc	216
8309c1ab	217	// get the output run loader and loader
	218	AliRunLoader* runLoader =
	219	AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
	220	AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308	221	if(!loader) {
8309c1ab	222	AliError("no ZDC loader found");
	223	return;
	224	}
	225
	226	// create the output tree
	227	const char* mode = "update";
8574b308	228	if(runLoader->GetEventNumber() == 0) mode = "recreate";
8309c1ab	229	loader->LoadDigits(mode);
	230	loader->MakeTree("D");
	231	TTree* treeD = loader->TreeD();
	232	AliZDCDigit digit;
	233	AliZDCDigit* pdigit = &digit;
	234	const Int_t kBufferSize = 4000;
	235	treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
	236
	237	// Create digits
7f73eb6b	238	Int_t sector[2], sectorL[2];
d79f8d50	239	Int_t digi[2], digiL[2], digioot[2];
abf60186	240	for(sector[0]=1; sector[0]<=3; sector[0]++){
	241	for(sector[1]=0; sector[1]<5; sector[1]++){
	242	if((sector[0]==3) && ((sector[1]<1) \|\| (sector[1]>2))) continue;
8574b308	243	for(Int_t res=0; res<2; res++){
abf60186	244	digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09	245	+ Pedestal(sector[0], sector[1], res);
7f73eb6b	246	}
abf60186	247	/*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
abf60186	248	sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
d79f8d50	249	*/
abf60186	250	//
abf60186	251	new(pdigit) AliZDCDigit(sector, digi);
8309c1ab	252	treeD->Fill();
7f73eb6b	253	//
	254	// --- Adding digits for 2nd ZDC set (left side w.r.t. IP) ---
	255	// --- they are copied from right ZDC digits
	256	if(sector[0]==1 \|\| sector[0]==2){
	257	sectorL[0] = sector[0]+3;
	258	sectorL[1] = sector[1];
8574b308	259	for(Int_t res=0; res<2; res++){
7f73eb6b	260	digiL[res] = Phe2ADCch(sectorL[0], sectorL[1], pm[sector[0]-1][sector[1]], res)
	261	+ Pedestal(sectorL[0], sectorL[1], res);
	262	}
abf60186	263	/*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	264	sectorL[0], sectorL[1], digiL[0], digiL[1]); // Chiara debugging!
	265	*/
	266	//
	267	new(pdigit) AliZDCDigit(sectorL, digiL);
	268	treeD->Fill();
7f73eb6b	269	}
8309c1ab	270	}
83347831	271	} // Loop over detector
	272	// Adding in-time digits for 2 reference PTM signals (after signal ch.)
	273	// (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
	274	Int_t sectorRef[2];
	275	sectorRef[1] = 5;
9d38ced8	276	Int_t sigRef[2];
	277	if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
	278	else {sigRef[0]=0; sigRef[1]=0;}
	279	//
83347831	280	for(Int_t iref=0; iref<2; iref++){
	281	sectorRef[0] = 3*iref+1;
	282	for(Int_t res=0; res<2; res++){
	283	sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
	284	}
	285	/*printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	286	sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
	287	*/
	288	new(pdigit) AliZDCDigit(sectorRef, sigRef);
	289	treeD->Fill();
abf60186	290	}
d79f8d50	291	//
	292	// --- Adding digits for out-of-time channels after signal digits
	293	for(sector[0]=1; sector[0]<=3; sector[0]++){
	294	for(sector[1]=0; sector[1]<5; sector[1]++){
	295	if((sector[0]==3) && ((sector[1]<1) \|\| (sector[1]>2))) continue;
8574b308	296	for(Int_t res=0; res<2; res++){
d79f8d50	297	digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
	298	}
	299	/*printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	300	sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
	301	*/
	302	//
	303	new(pdigit) AliZDCDigit(sector, digioot);
	304	treeD->Fill();
	305	//
	306	if(sector[0]==1 \|\| sector[0]==2){
	307	sectorL[0] = sector[0]+3;
	308	sectorL[1] = sector[1];
8574b308	309	for(Int_t res=0; res<2; res++){
d79f8d50	310	digioot[res] = Pedestal(sectorL[0], sectorL[1], res); // out-of-time ADCs
	311	}
	312	/*printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	313	sectorL[0], sectorL[1], digioot[0], digioot[1]); // Chiara debugging!
	314	*/
	315	//
	316	new(pdigit) AliZDCDigit(sectorL, digioot);
	317	treeD->Fill();
	318	}
	319	//
d79f8d50	320	}
d79f8d50	321	}
83347831	322	// Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
	323	Int_t sigRefoot[2];
	324	for(Int_t iref=0; iref<2; iref++){
	325	sectorRef[0] = 3*iref+1;
	326	for(Int_t res=0; res<2; res++){
	327	sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
	328	}
	329	/*printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	330	sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
	331	*/
	332	new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
	333	treeD->Fill();
	334
	335	}
	336	//printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
	337
8309c1ab	338	// write the output tree
	339	loader->WriteDigits("OVERWRITE");
	340	loader->UnloadDigits();
	341	}
	342
	343
	344	//_____________________________________________________________________________
	345	void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
	346	Int_t &freeSpecN, Int_t &freeSpecP) const
	347	{
	348	// simulate fragmentation of spectators
	349
	350	Int_t zz[100], nn[100];
	351	AliZDCFragment frag(impPar);
8574b308	352	for(Int_t j=0; j<=99; j++){
8309c1ab	353	zz[j] =0;
	354	nn[j] =0;
	355	}
	356
	357	// Fragments generation
	358	Int_t nAlpha;
	359	frag.GenerateIMF(zz, nAlpha);
	360
	361	// Attach neutrons
	362	Int_t ztot=0;
	363	Int_t ntot=0;
	364	frag.AttachNeutrons(zz, nn, ztot, ntot);
	365	freeSpecN = specN-ntot-2*nAlpha;
	366	freeSpecP = specP-ztot-2*nAlpha;
3848c666	367	// Removing deuterons
	368	Int_t ndeu = (Int_t) (frag.DeuteronNumber());
	369	freeSpecN -= ndeu;
	370	//
8309c1ab	371	if(freeSpecN<0) freeSpecN=0;
	372	if(freeSpecP<0) freeSpecP=0;
	373	AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
	374	}
	375
	376	//_____________________________________________________________________________
	377	void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
	378	Float_t pm[3][5]) const
	379	{
	380	// add signal of the spectators
	381
	382	TFile* file = NULL;
8574b308	383	if(SpecType == 1) { // --- Signal for spectator neutrons
e689b8ea	384	file = TFile::Open("$ALICE_ROOT/ZDC/ZNsignalntu.root");
8574b308	385	} else if(SpecType == 2) { // --- Signal for spectator protons
e689b8ea	386	file = TFile::Open("$ALICE_ROOT/ZDC/ZPsignalntu.root");
8309c1ab	387	}
8574b308	388	if(!file \|\| !file->IsOpen()) {
8309c1ab	389	AliError("Opening of file failed");
	390	return;
	391	}
	392
	393	TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal");
	394	Int_t nentries = (Int_t) zdcSignal->GetEntries();
	395
	396	Float_t *entry, hitsSpec[7];
	397	Int_t pl, i, j, k, iev=0, rnd[125], volume[2];
48642b09	398	for(pl=0;pl<125;pl++) rnd[pl] = 0;
8574b308	399	if(numEvents > 125) {
8309c1ab	400	AliWarning(Form("numEvents (%d) is larger than 125", numEvents));
	401	numEvents = 125;
	402	}
	403	for(pl=0;pl<numEvents;pl++){
	404	rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223	405	if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab	406	//printf(" rnd[%d] = %d\n",pl,rnd[pl]);
	407	}
	408	// Sorting vector in ascending order with C function QSORT
	409	qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
	410	do{
	411	for(i=0; i<nentries; i++){
	412	zdcSignal->GetEvent(i);
	413	entry = zdcSignal->GetArgs();
	414	if(entry[0] == rnd[iev]){
	415	for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
	416	for(j=0; j<7; j++) hitsSpec[j] = entry[j+3];
48642b09	417	//
8309c1ab	418	Float_t lightQ = hitsSpec[4];
8309c1ab	419	Float_t lightC = hitsSpec[5];
78d18275	420	AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f",
8309c1ab	421	volume[0], volume[1], lightQ, lightC));
48642b09	422	//printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f",
48642b09	423	// volume[0], volume[1], lightQ, lightC);
8574b308	424	if(volume[0] < 3) { // ZN or ZP
8309c1ab	425	pm[volume[0]-1][0] += lightC;
8309c1ab	426	pm[volume[0]-1][volume[1]] += lightQ;
48642b09	427	//printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
	428	// (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
	429	}
	430	else {
8574b308	431	if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
48642b09	432	else pm[2][2] += lightQ; // ZEM 2
	433	//printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
	434	}
8309c1ab	435	}
	436	else if(entry[0] > rnd[iev]){
	437	iev++;
	438	continue;
	439	}
	440	}
	441	}while(iev<numEvents);
	442
	443	file->Close();
	444	delete file;
	445	}
	446
	447
	448	//_____________________________________________________________________________
	449	Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
	450	Int_t Res) const
	451	{
48642b09	452	// Evaluation of the ADC channel corresponding to the light yield Light
8a2624cc	453	Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
78d18275	454	//printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,ADCch);
7f73eb6b	455
8a2624cc	456	return vADCch;
48642b09	457	}
8309c1ab	458
48642b09	459	//_____________________________________________________________________________
	460	Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
	461	{
8a2624cc	462	// Returns a pedestal for detector det, PM quad, channel with res.
8a2624cc	463	//
65b16e87	464	Float_t pedValue;
dbc8d7fc	465
abf60186	466	// Normal run
abf60186	467	if(fIsCalibration == 0){
65b16e87	468	Float_t meanPed, pedWidth;
abf60186	469	Int_t index=0;
83347831	470	if(Quad!=5){
	471	if(Det==1 \|\| Det==2) index = 10(Det-1)+Quad+5Res; // ZN1, ZP1
	472	else if(Det==3) index = 10*(Det-1)+(Quad-1)+Res; // ZEM
	473	else if(Det==4 \|\| Det==5) index = 10(Det-2)+Quad+5Res+4; // ZN2, ZP2
	474	}
	475	else index = 10(Quad-1)+(Det-1)1/3+2*Res+4; // Reference PMs
	476	//
abf60186	477	meanPed = fCalibData->GetMeanPed(index);
65b16e87	478	pedWidth = fCalibData->GetMeanPedWidth(index);
65b16e87	479	pedValue = gRandom->Gaus(meanPed,pedWidth);
abf60186	480	//
abf60186	481	/*printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n",
65b16e87	482	Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
abf60186	483	*/
abf60186	484	}
7f73eb6b	485	// To create calibration object
83347831	486	else{
65b16e87	487	if(Res == 0) pedValue = gRandom->Gaus((35.+10.gRandom->Rndm()),(0.5+0.2gRandom->Rndm())); //High gain
65b16e87	488	else pedValue = gRandom->Gaus((250.+100.gRandom->Rndm()),(3.5+2.gRandom->Rndm())); //Low gain
83347831	489	}
dbc8d7fc	490
65b16e87	491	return (Int_t) pedValue;
8309c1ab	492	}
	493
	494	//_____________________________________________________________________________
78d18275	495	AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab	496	{
8309c1ab	497
78d18275	498	Bool_t deleteManager = kFALSE;
48642b09	499
78d18275	500	AliCDBManager *manager = AliCDBManager::Instance();
78d18275	501	AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09	502
78d18275	503	if(!defstorage \|\| !(defstorage->Contains("ZDC"))){
	504	AliWarning("No default storage set or default storage doesn't contain ZDC!");
	505	manager->SetDefaultStorage(uri);
	506	deleteManager = kTRUE;
	507	}
	508
	509	AliCDBStorage *storage = manager->GetDefaultStorage();
	510
	511	if(deleteManager){
	512	AliCDBManager::Instance()->UnsetDefaultStorage();
	513	defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
	514	}
	515
	516	return storage;
	517	}
48642b09	518
78d18275	519	//_____________________________________________________________________________
7f73eb6b	520	AliZDCCalibData* AliZDCDigitizer::GetCalibData() const
78d18275	521	{
4fda3ba1	522
	523	// Getting calibration object for ZDC set
	524
	525	AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data");
457a440d	526	if(!entry) AliFatal("No calibration data loaded!");
	527
	528	AliZDCCalibData calibdata = dynamic_cast<AliZDCCalibData> (entry->GetObject());
	529	if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
8309c1ab	530
78d18275	531	return calibdata;
8309c1ab	532	}
4fda3ba1	533