[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 "AliCDBStorage.h"
#include "AliCDBEntry.h"
#include "AliZDCSDigit.h"
#include "AliZDCDigit.h"
#include "AliZDCFragment.h"
#include "AliZDCDigitizer.h"
#include "AliZDCCalibData.h"

ClassImp(AliZDCDigitizer)


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

}

//____________________________________________________________________________
AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
  AliDigitizer(manager)
{

  // Constructor    
  fStorage =  SetStorage("local://$ALICE_ROOT");

  // Get calibration data
  int runNumber = 0;
  fCalibData = GetCalibData(runNumber); 

}

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

}


//____________________________________________________________________________
Bool_t AliZDCDigitizer::Init()
{
  // Initialize the digitizer
  // NB -> PM gain vs. HV & ADC resolutions will move to DCDB ***************
  for (Int_t i = 0; i < 3; i++) {
    for(Int_t j = 0; j < 5; j++) {
      fPMGain[i][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

  Float_t pm[3][5];
  // --- pm[0][...] = light in ZN  [C, Q1, Q2, Q3, Q4]
  // --- pm[1][...] = light in ZP  [C, Q1, Q2, Q3, Q4]
  // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
  for (Int_t iSector1 = 0; iSector1 < 3; iSector1++)
    for (Int_t iSector2 = 0; iSector2 < 5; iSector2++) {
      pm[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, %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!
    }

    // unload sdigits
    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, Nspecn = %d, Nspecp = %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];
  Int_t digi[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[%d] = %d\n\n",
	  //    sector[0], sector[1], res, digi[res]); // Chiara debugging!
	}
        new(pdigit) AliZDCDigit(sector, digi);
        treeD->Fill();
    }

  // 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;
  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("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root");
  } else if (SpecType == 2) {	// --- Signal for spectator protons
    file = TFile::Open("$ALICE/$ALICE_LEVEL/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 ADCch = (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 ADCch;
}

//_____________________________________________________________________________
Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
{
  
  Float_t meanPed;
  if(Det != 3) meanPed = fCalibData->GetMeanPed(10*(Det-1)+Quad+5*Res);
  else         meanPed = fCalibData->GetMeanPed(10*(Det-1)+Quad+1*Res);
  
  //printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n",
  //	Det, Quad, Res,10*(Det-1)+Quad+5*Res,(Int_t) meanPed); // Chiara debugging!
  
  return (Int_t) meanPed;
}

//_____________________________________________________________________________
AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri) 
{
  //printf("\n\t AliZDCDigitizer::SetStorage \n");

  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(int runNumber) const
{

  //printf("\n\t AliZDCDigitizer::GetCalibData \n");
      
  AliCDBEntry  *entry = fStorage->Get("ZDC/Calib/Data",runNumber);  
  AliZDCCalibData *calibdata = (AliZDCCalibData*) entry->GetObject();
    
  if (!calibdata)  AliWarning("No calibration data from calibration database !");

  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 "AliCDBStorage.h"
48642b09	41	#include "AliCDBEntry.h"
8309c1ab	42	#include "AliZDCSDigit.h"
	43	#include "AliZDCDigit.h"
	44	#include "AliZDCFragment.h"
	45	#include "AliZDCDigitizer.h"
48642b09	46	#include "AliZDCCalibData.h"
8309c1ab	47
	48	ClassImp(AliZDCDigitizer)
	49
	50
	51	//____________________________________________________________________________
	52	AliZDCDigitizer::AliZDCDigitizer()
	53	{
	54	// Default constructor
	55
	56	}
	57
	58	//____________________________________________________________________________
	59	AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
	60	AliDigitizer(manager)
	61	{
78d18275	62
48642b09	63	// Constructor
78d18275	64	fStorage = SetStorage("local://$ALICE_ROOT");
	65
	66	// Get calibration data
	67	int runNumber = 0;
	68	fCalibData = GetCalibData(runNumber);
	69
8309c1ab	70	}
	71
	72	//____________________________________________________________________________
	73	AliZDCDigitizer::~AliZDCDigitizer()
	74	{
	75	// Destructor
	76
	77	}
	78
	79
	80	//____________________________________________________________________________
	81	Bool_t AliZDCDigitizer::Init()
	82	{
48642b09	83	// Initialize the digitizer
48642b09	84	// NB -> PM gain vs. HV & ADC resolutions will move to DCDB ***************
8309c1ab	85	for (Int_t i = 0; i < 3; i++) {
	86	for(Int_t j = 0; j < 5; j++) {
	87	fPMGain[i][j] = 100000.;
	88	}
	89	}
48642b09	90	// ADC Caen V965
8309c1ab	91	fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
	92	fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
	93
	94	return kTRUE;
	95	}
	96
	97	//____________________________________________________________________________
	98	void AliZDCDigitizer::Exec(Option_t* /option/)
	99	{
48642b09	100	// Execute digitization
8309c1ab	101
8309c1ab	102	Float_t pm[3][5];
48642b09	103	// --- pm[0][...] = light in ZN [C, Q1, Q2, Q3, Q4]
	104	// --- pm[1][...] = light in ZP [C, Q1, Q2, Q3, Q4]
	105	// --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
8309c1ab	106	for (Int_t iSector1 = 0; iSector1 < 3; iSector1++)
	107	for (Int_t iSector2 = 0; iSector2 < 5; iSector2++) {
	108	pm[iSector1][iSector2] = 0;
	109	}
8309c1ab	110
	111	// impact parameter and number of spectators
	112	Float_t impPar = -1;
	113	Int_t specN = 0;
	114	Int_t specP = 0;
	115
	116	// loop over input streams
	117	for (Int_t iInput = 0; iInput < fManager->GetNinputs(); iInput++) {
	118
	119	// get run loader and ZDC loader
	120	AliRunLoader* runLoader =
	121	AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
	122	AliLoader* loader = runLoader->GetLoader("ZDCLoader");
	123	if (!loader) continue;
	124
	125	// load sdigits
	126	loader->LoadSDigits();
	127	TTree* treeS = loader->TreeS();
	128	if (!treeS) continue;
	129	AliZDCSDigit sdigit;
	130	AliZDCSDigit* psdigit = &sdigit;
	131	treeS->SetBranchAddress("ZDC", &psdigit);
	132
	133	// loop over sdigits
	134	for (Int_t iSDigit = 0; iSDigit < treeS->GetEntries(); iSDigit++) {
	135	treeS->GetEntry(iSDigit);
	136	if (!psdigit) continue;
	137
	138	if ((sdigit.GetSector(1) < 0) \|\| (sdigit.GetSector(1) > 4)) {
	139	AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
	140	sdigit.GetSector(0), sdigit.GetSector(1)));
	141	continue;
	142	}
48642b09	143	pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
	144	printf("\n\t Detector (%d, %d), pm[%d][%d] = %.0f \n",
	145	sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
	146	sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging!
8309c1ab	147	}
	148
	149	// unload sdigits
	150	loader->UnloadSDigits();
	151
	152	// get the impact parameter and the number of spectators in case of hijing
	153	if (!runLoader->GetAliRun()) runLoader->LoadgAlice();
	154	AliHeader* header = runLoader->GetAliRun()->GetHeader();
	155	if (!header) continue;
	156	AliGenEventHeader* genHeader = header->GenEventHeader();
	157	if (!genHeader) continue;
	158	if (!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue;
	159	impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
85a96223	160	//
	161	specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
	162	specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
78d18275	163	AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n",
8309c1ab	164	impPar, specN, specP));
78d18275	165	printf("\n\t AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n",
48642b09	166	impPar, specN, specP);
8309c1ab	167	}
	168
	169	// add spectators
	170	if (impPar >= 0) {
	171	Int_t freeSpecN, freeSpecP;
	172	Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP);
78d18275	173	printf("\n\t AliZDCDigitizer ---- Adding signal for %d free spectator n\n",freeSpecN);
8309c1ab	174	SpectatorSignal(1, freeSpecN, pm);
78d18275	175	printf("\t AliZDCDigitizer ---- Adding signal for %d free spectator p\n\n",freeSpecP);
8309c1ab	176	SpectatorSignal(2, freeSpecP, pm);
	177	}
	178
	179	// get the output run loader and loader
	180	AliRunLoader* runLoader =
	181	AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
	182	AliLoader* loader = runLoader->GetLoader("ZDCLoader");
	183	if (!loader) {
	184	AliError("no ZDC loader found");
	185	return;
	186	}
	187
	188	// create the output tree
	189	const char* mode = "update";
	190	if (runLoader->GetEventNumber() == 0) mode = "recreate";
	191	loader->LoadDigits(mode);
	192	loader->MakeTree("D");
	193	TTree* treeD = loader->TreeD();
	194	AliZDCDigit digit;
	195	AliZDCDigit* pdigit = &digit;
	196	const Int_t kBufferSize = 4000;
	197	treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
	198
	199	// Create digits
	200	Int_t sector[2];
	201	Int_t digi[2];
	202	for (sector[0] = 1; sector[0] <= 3; sector[0]++)
	203	for (sector[1] = 0; sector[1] < 5; sector[1]++) {
	204	if ((sector[0] == 3) && ((sector[1] < 1) \|\| (sector[1] > 2))) continue;
	205	for (Int_t res = 0; res < 2; res++){
48642b09	206	digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09	207	+ Pedestal(sector[0], sector[1], res);
78d18275	208	//printf("\t DIGIT added -> det = %d, quad = %d - digi[%d] = %d\n\n",
78d18275	209	// sector[0], sector[1], res, digi[res]); // Chiara debugging!
8309c1ab	210	}
	211	new(pdigit) AliZDCDigit(sector, digi);
	212	treeD->Fill();
	213	}
	214
	215	// write the output tree
	216	loader->WriteDigits("OVERWRITE");
	217	loader->UnloadDigits();
	218	}
	219
	220
	221	//_____________________________________________________________________________
	222	void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
	223	Int_t &freeSpecN, Int_t &freeSpecP) const
	224	{
	225	// simulate fragmentation of spectators
	226
	227	Int_t zz[100], nn[100];
	228	AliZDCFragment frag(impPar);
	229	for (Int_t j=0; j<=99; j++){
	230	zz[j] =0;
	231	nn[j] =0;
	232	}
	233
	234	// Fragments generation
	235	Int_t nAlpha;
	236	frag.GenerateIMF(zz, nAlpha);
	237
	238	// Attach neutrons
	239	Int_t ztot=0;
	240	Int_t ntot=0;
	241	frag.AttachNeutrons(zz, nn, ztot, ntot);
	242	freeSpecN = specN-ntot-2*nAlpha;
	243	freeSpecP = specP-ztot-2*nAlpha;
	244	if(freeSpecN<0) freeSpecN=0;
	245	if(freeSpecP<0) freeSpecP=0;
	246	AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
	247	}
	248
	249	//_____________________________________________________________________________
	250	void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
	251	Float_t pm[3][5]) const
	252	{
	253	// add signal of the spectators
	254
	255	TFile* file = NULL;
	256	if (SpecType == 1) { // --- Signal for spectator neutrons
	257	file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root");
	258	} else if (SpecType == 2) { // --- Signal for spectator protons
	259	file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root");
	260	}
	261	if (!file \|\| !file->IsOpen()) {
	262	AliError("Opening of file failed");
	263	return;
	264	}
	265
	266	TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal");
	267	Int_t nentries = (Int_t) zdcSignal->GetEntries();
	268
	269	Float_t *entry, hitsSpec[7];
	270	Int_t pl, i, j, k, iev=0, rnd[125], volume[2];
48642b09	271	for(pl=0;pl<125;pl++) rnd[pl] = 0;
8309c1ab	272	if (numEvents > 125) {
	273	AliWarning(Form("numEvents (%d) is larger than 125", numEvents));
	274	numEvents = 125;
	275	}
	276	for(pl=0;pl<numEvents;pl++){
	277	rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223	278	if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab	279	//printf(" rnd[%d] = %d\n",pl,rnd[pl]);
	280	}
	281	// Sorting vector in ascending order with C function QSORT
	282	qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
	283	do{
	284	for(i=0; i<nentries; i++){
	285	zdcSignal->GetEvent(i);
	286	entry = zdcSignal->GetArgs();
	287	if(entry[0] == rnd[iev]){
	288	for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
	289	for(j=0; j<7; j++) hitsSpec[j] = entry[j+3];
48642b09	290	//
8309c1ab	291	Float_t lightQ = hitsSpec[4];
8309c1ab	292	Float_t lightC = hitsSpec[5];
78d18275	293	AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f",
8309c1ab	294	volume[0], volume[1], lightQ, lightC));
48642b09	295	//printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f",
48642b09	296	// volume[0], volume[1], lightQ, lightC);
8309c1ab	297	if (volume[0] < 3) { // ZN or ZP
	298	pm[volume[0]-1][0] += lightC;
	299	pm[volume[0]-1][volume[1]] += lightQ;
48642b09	300	//printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
	301	// (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
	302	}
	303	else {
	304	if (volume[1] == 1) pm[2][1] += lightC; // ZEM 1
	305	else pm[2][2] += lightQ; // ZEM 2
	306	//printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
	307	}
8309c1ab	308	}
	309	else if(entry[0] > rnd[iev]){
	310	iev++;
	311	continue;
	312	}
	313	}
	314	}while(iev<numEvents);
	315
	316	file->Close();
	317	delete file;
	318	}
	319
	320
	321	//_____________________________________________________________________________
	322	Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
	323	Int_t Res) const
	324	{
48642b09	325	// Evaluation of the ADC channel corresponding to the light yield Light
48642b09	326	Int_t ADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
78d18275	327	//printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,ADCch);
48642b09	328	return ADCch;
48642b09	329	}
8309c1ab	330
48642b09	331	//_____________________________________________________________________________
	332	Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
	333	{
48642b09	334
48642b09	335	Float_t meanPed;
78d18275	336	if(Det != 3) meanPed = fCalibData->GetMeanPed(10(Det-1)+Quad+5Res);
78d18275	337	else meanPed = fCalibData->GetMeanPed(10(Det-1)+Quad+1Res);
48642b09	338
78d18275	339	//printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n",
78d18275	340	// Det, Quad, Res,10(Det-1)+Quad+5Res,(Int_t) meanPed); // Chiara debugging!
48642b09	341
48642b09	342	return (Int_t) meanPed;
8309c1ab	343	}
	344
	345	//_____________________________________________________________________________
78d18275	346	AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab	347	{
78d18275	348	//printf("\n\t AliZDCDigitizer::SetStorage \n");
8309c1ab	349
78d18275	350	Bool_t deleteManager = kFALSE;
48642b09	351
78d18275	352	AliCDBManager *manager = AliCDBManager::Instance();
78d18275	353	AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09	354
78d18275	355	if(!defstorage \|\| !(defstorage->Contains("ZDC"))){
	356	AliWarning("No default storage set or default storage doesn't contain ZDC!");
	357	manager->SetDefaultStorage(uri);
	358	deleteManager = kTRUE;
	359	}
	360
	361	AliCDBStorage *storage = manager->GetDefaultStorage();
	362
	363	if(deleteManager){
	364	AliCDBManager::Instance()->UnsetDefaultStorage();
	365	defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
	366	}
	367
	368	return storage;
	369	}
48642b09	370
78d18275	371	//_____________________________________________________________________________
	372	AliZDCCalibData* AliZDCDigitizer::GetCalibData(int runNumber) const
	373	{
48642b09	374
78d18275	375	//printf("\n\t AliZDCDigitizer::GetCalibData \n");
	376
	377	AliCDBEntry *entry = fStorage->Get("ZDC/Calib/Data",runNumber);
	378	AliZDCCalibData calibdata = (AliZDCCalibData) entry->GetObject();
	379
	380	if (!calibdata) AliWarning("No calibration data from calibration database !");
8309c1ab	381
78d18275	382	return calibdata;
8309c1ab	383	}