[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 AliZDCPedestals;
class AliZDCCalib;
class AliZDCRecParam;

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 pedestal calib. data
  // Get calibration data
  fPedData = GetPedData(); 
  fCalibData = GetCalibData(); 
  fRecParam = GetRecParam(); 
  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;
  fPedData = digitizer.fPedData;
  fCalibData = digitizer.fCalibData;
  fRecParam = digitizer.fRecParam;

}

//____________________________________________________________________________
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];
  Int_t digi[2], digioot[2];
  for(sector[0]=1; sector[0]<6; 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();
    }
  } // 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];
  // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
  if(fIsCalibration==0) {sigRef[0]=100;  sigRef[1]=800;}
  else {sigRef[0]=0;  sigRef[1]=0;} // calibration -> simulation of pedestal values
  //
  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]<6; 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();
    }
  }
  // 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) (freeSpecN*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,vADCch);

  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){
    Int_t index=0, kNch=24;
    if(Quad!=5){
      if(Det==1)	index = Quad+kNch*Res;	  // ZNC
      else if(Det==2)	index = (Quad+5)+kNch*Res;  // ZPC
      else if(Det==3)	index = (Quad+9)+kNch*Res;  // ZEM
      else if(Det==4)	index = (Quad+12)+kNch*Res; // ZNA
      else if(Det==5)	index = (Quad+17)+kNch*Res; // ZPA
    }
    else index = (Det-1)/3+22+kNch*Res; // Reference PMs
    //
    Float_t meanPed = fPedData->GetMeanPed(index);
    Float_t pedWidth = fPedData->GetMeanPedWidth(index);
    pedValue = gRandom->Gaus(meanPed,pedWidth);
    //
    /*printf("\t  AliZDCDigitizer::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; 
}

//_____________________________________________________________________________
AliZDCPedestals* AliZDCDigitizer::GetPedData() const
{

  // Getting pedestal calibration object for ZDC set

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

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

  return calibdata;
}

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

  // Getting calibration object for ZDC set

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

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

  return calibdata;
}

//_____________________________________________________________________________
AliZDCRecParam* AliZDCDigitizer::GetRecParam() const
{

  // Getting calibration object for ZDC set

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

  AliZDCRecParam *calibdata = dynamic_cast<AliZDCRecParam*>  (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
8a2624cc	46	class AliCDBStorage;
6024ec85	47	class AliZDCPedestals;
	48	class AliZDCCalib;
	49	class AliZDCRecParam;
8309c1ab	50
	51	ClassImp(AliZDCDigitizer)
	52
	53
	54	//____________________________________________________________________________
	55	AliZDCDigitizer::AliZDCDigitizer()
	56	{
	57	// Default constructor
	58
	59	}
	60
	61	//____________________________________________________________________________
	62	AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
	63	AliDigitizer(manager)
	64	{
abf60186	65	fIsCalibration=0; //By default the simulation doesn't create calib. data
6024ec85	66	// fIsCalibration=1; //To create pedestal calib. data
78d18275	67	// Get calibration data
6024ec85	68	fPedData = GetPedData();
7f73eb6b	69	fCalibData = GetCalibData();
6024ec85	70	fRecParam = GetRecParam();
d27e20dd	71	if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
78d18275	72
8309c1ab	73	}
	74
	75	//____________________________________________________________________________
	76	AliZDCDigitizer::~AliZDCDigitizer()
	77	{
	78	// Destructor
	79
	80	}
	81
	82
cc2abffd	83	//____________________________________________________________________________
	84	AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
	85	AliDigitizer()
	86	{
	87	// Copy constructor
	88
	89	for(Int_t i=0; i<6; i++){
	90	for(Int_t j=0; j<5; j++){
	91	fPMGain[i][j] = digitizer.fPMGain[i][j];
	92	}
	93	}
	94	for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
	95	fIsCalibration = digitizer.fIsCalibration;
6024ec85	96	fPedData = digitizer.fPedData;
cc2abffd	97	fCalibData = digitizer.fCalibData;
6024ec85	98	fRecParam = digitizer.fRecParam;
cc2abffd	99
	100	}
	101
8309c1ab	102	//____________________________________________________________________________
	103	Bool_t AliZDCDigitizer::Init()
	104	{
48642b09	105	// Initialize the digitizer
48642b09	106	// NB -> PM gain vs. HV & ADC resolutions will move to DCDB ***************
7f73eb6b	107	for(Int_t j = 0; j < 5; j++){
	108	fPMGain[0][j] = 50000.;
	109	fPMGain[1][j] = 100000.;
	110	fPMGain[2][j] = 100000.;
a017f01b	111	fPMGain[3][j] = 50000.;
	112	fPMGain[4][j] = 100000.;
	113	fPMGain[5][j] = 100000.;
7f73eb6b	114	}
	115	// ADC Caen V965
	116	fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
	117	fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
8309c1ab	118
	119	return kTRUE;
	120	}
	121
	122	//____________________________________________________________________________
	123	void AliZDCDigitizer::Exec(Option_t* /option/)
	124	{
48642b09	125	// Execute digitization
8309c1ab	126
d79f8d50	127	// ------------------------------------------------------------
83347831	128	// !!! 2nd ZDC set added
7f73eb6b	129	// *** 1st 3 arrays are digits from REAL (simulated) hits
	130	// *** last 2 are copied from simulated digits
	131	// --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4]
	132	// --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4]
48642b09	133	// --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
7f73eb6b	134	// --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW!
7f73eb6b	135	// --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW!
d79f8d50	136	// ------------------------------------------------------------
d79f8d50	137	Float_t pm[5][5];
8574b308	138	for(Int_t iSector1=0; iSector1<5; iSector1++)
8574b308	139	for(Int_t iSector2=0; iSector2<5; iSector2++){
8309c1ab	140	pm[iSector1][iSector2] = 0;
8309c1ab	141	}
d79f8d50	142
	143	// ------------------------------------------------------------
	144	// ### Out of time ADC added (22 channels)
	145	// --- same codification as for signal PTMs (see above)
	146	// ------------------------------------------------------------
	147	Float_t pmoot[5][5];
8574b308	148	for(Int_t iSector1=0; iSector1<5; iSector1++)
8574b308	149	for(Int_t iSector2=0; iSector2<5; iSector2++){
d79f8d50	150	pmoot[iSector1][iSector2] = 0;
d79f8d50	151	}
8309c1ab	152
	153	// impact parameter and number of spectators
	154	Float_t impPar = -1;
	155	Int_t specN = 0;
	156	Int_t specP = 0;
	157
	158	// loop over input streams
8574b308	159	for(Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){
8309c1ab	160
	161	// get run loader and ZDC loader
	162	AliRunLoader* runLoader =
	163	AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
	164	AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308	165	if(!loader) continue;
8309c1ab	166
	167	// load sdigits
	168	loader->LoadSDigits();
	169	TTree* treeS = loader->TreeS();
8574b308	170	if(!treeS) continue;
8309c1ab	171	AliZDCSDigit sdigit;
	172	AliZDCSDigit* psdigit = &sdigit;
	173	treeS->SetBranchAddress("ZDC", &psdigit);
	174
	175	// loop over sdigits
8574b308	176	for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
8309c1ab	177	treeS->GetEntry(iSDigit);
7f73eb6b	178	//
8574b308	179	if(!psdigit) continue;
8574b308	180	if((sdigit.GetSector(1) < 0) \|\| (sdigit.GetSector(1) > 4)){
8309c1ab	181	AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
	182	sdigit.GetSector(0), sdigit.GetSector(1)));
	183	continue;
	184	}
7f73eb6b	185	//
48642b09	186	pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
7f73eb6b	187	/*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
48642b09	188	sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
48642b09	189	sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging!
abf60186	190	*/
8309c1ab	191	}
8309c1ab	192
8309c1ab	193	loader->UnloadSDigits();
	194
	195	// get the impact parameter and the number of spectators in case of hijing
8574b308	196	if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
8309c1ab	197	AliHeader* header = runLoader->GetAliRun()->GetHeader();
8574b308	198	if(!header) continue;
8309c1ab	199	AliGenEventHeader* genHeader = header->GenEventHeader();
8574b308	200	if(!genHeader) continue;
8574b308	201	if(!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue;
8309c1ab	202	impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
85a96223	203	//
	204	specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
	205	specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
78d18275	206	AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n",
8309c1ab	207	impPar, specN, specP));
d27e20dd	208	printf("\n\t AliZDCDigitizer -> b = %f fm, # generated spectator n = %d,"
d27e20dd	209	" # generated spectator p = %d\n", impPar, specN, specP);
8309c1ab	210	}
	211
	212	// add spectators
8574b308	213	if(impPar >= 0) {
8309c1ab	214	Int_t freeSpecN, freeSpecP;
8309c1ab	215	Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP);
d27e20dd	216	printf("\n\t AliZDCDigitizer -> Adding signal for %d free spectator n\n",freeSpecN);
8309c1ab	217	SpectatorSignal(1, freeSpecN, pm);
d27e20dd	218	printf("\t AliZDCDigitizer -> Adding signal for %d free spectator p\n\n",freeSpecP);
8309c1ab	219	SpectatorSignal(2, freeSpecP, pm);
	220	}
	221
8a2624cc	222
8309c1ab	223	// get the output run loader and loader
	224	AliRunLoader* runLoader =
	225	AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
	226	AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308	227	if(!loader) {
8309c1ab	228	AliError("no ZDC loader found");
	229	return;
	230	}
	231
	232	// create the output tree
	233	const char* mode = "update";
8574b308	234	if(runLoader->GetEventNumber() == 0) mode = "recreate";
8309c1ab	235	loader->LoadDigits(mode);
	236	loader->MakeTree("D");
	237	TTree* treeD = loader->TreeD();
	238	AliZDCDigit digit;
	239	AliZDCDigit* pdigit = &digit;
	240	const Int_t kBufferSize = 4000;
	241	treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
	242
	243	// Create digits
80e87581	244	Int_t sector[2];
	245	Int_t digi[2], digioot[2];
	246	for(sector[0]=1; sector[0]<6; sector[0]++){
abf60186	247	for(sector[1]=0; sector[1]<5; sector[1]++){
abf60186	248	if((sector[0]==3) && ((sector[1]<1) \|\| (sector[1]>2))) continue;
8574b308	249	for(Int_t res=0; res<2; res++){
abf60186	250	digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09	251	+ Pedestal(sector[0], sector[1], res);
7f73eb6b	252	}
58e12fee	253	/*printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
abf60186	254	sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
d79f8d50	255	*/
abf60186	256	//
abf60186	257	new(pdigit) AliZDCDigit(sector, digi);
8309c1ab	258	treeD->Fill();
8309c1ab	259	}
83347831	260	} // Loop over detector
	261	// Adding in-time digits for 2 reference PTM signals (after signal ch.)
	262	// (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
	263	Int_t sectorRef[2];
	264	sectorRef[1] = 5;
9d38ced8	265	Int_t sigRef[2];
80e87581	266	// Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
9d38ced8	267	if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
80e87581	268	else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
9d38ced8	269	//
83347831	270	for(Int_t iref=0; iref<2; iref++){
	271	sectorRef[0] = 3*iref+1;
	272	for(Int_t res=0; res<2; res++){
	273	sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
	274	}
	275	/*printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	276	sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
	277	*/
	278	new(pdigit) AliZDCDigit(sectorRef, sigRef);
	279	treeD->Fill();
abf60186	280	}
d79f8d50	281	//
d79f8d50	282	// --- Adding digits for out-of-time channels after signal digits
80e87581	283	for(sector[0]=1; sector[0]<6; sector[0]++){
d79f8d50	284	for(sector[1]=0; sector[1]<5; sector[1]++){
d79f8d50	285	if((sector[0]==3) && ((sector[1]<1) \|\| (sector[1]>2))) continue;
8574b308	286	for(Int_t res=0; res<2; res++){
d79f8d50	287	digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
	288	}
	289	/*printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	290	sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
	291	*/
	292	//
	293	new(pdigit) AliZDCDigit(sector, digioot);
	294	treeD->Fill();
d79f8d50	295	}
d79f8d50	296	}
83347831	297	// Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
	298	Int_t sigRefoot[2];
	299	for(Int_t iref=0; iref<2; iref++){
	300	sectorRef[0] = 3*iref+1;
	301	for(Int_t res=0; res<2; res++){
	302	sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
	303	}
	304	/*printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
	305	sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
	306	*/
	307	new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
	308	treeD->Fill();
83347831	309	}
	310	//printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
	311
8309c1ab	312	// write the output tree
	313	loader->WriteDigits("OVERWRITE");
	314	loader->UnloadDigits();
	315	}
	316
	317
	318	//_____________________________________________________________________________
	319	void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
	320	Int_t &freeSpecN, Int_t &freeSpecP) const
	321	{
	322	// simulate fragmentation of spectators
	323
	324	Int_t zz[100], nn[100];
	325	AliZDCFragment frag(impPar);
8574b308	326	for(Int_t j=0; j<=99; j++){
8309c1ab	327	zz[j] =0;
	328	nn[j] =0;
	329	}
	330
	331	// Fragments generation
	332	Int_t nAlpha;
	333	frag.GenerateIMF(zz, nAlpha);
	334
	335	// Attach neutrons
	336	Int_t ztot=0;
	337	Int_t ntot=0;
	338	frag.AttachNeutrons(zz, nn, ztot, ntot);
	339	freeSpecN = specN-ntot-2*nAlpha;
	340	freeSpecP = specP-ztot-2*nAlpha;
3848c666	341	// Removing deuterons
a0607c1f	342	Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
3848c666	343	freeSpecN -= ndeu;
3848c666	344	//
8309c1ab	345	if(freeSpecN<0) freeSpecN=0;
	346	if(freeSpecP<0) freeSpecP=0;
	347	AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
	348	}
	349
	350	//_____________________________________________________________________________
	351	void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
	352	Float_t pm[3][5]) const
	353	{
	354	// add signal of the spectators
	355
	356	TFile* file = NULL;
8574b308	357	if(SpecType == 1) { // --- Signal for spectator neutrons
e689b8ea	358	file = TFile::Open("$ALICE_ROOT/ZDC/ZNsignalntu.root");
8574b308	359	} else if(SpecType == 2) { // --- Signal for spectator protons
e689b8ea	360	file = TFile::Open("$ALICE_ROOT/ZDC/ZPsignalntu.root");
8309c1ab	361	}
8574b308	362	if(!file \|\| !file->IsOpen()) {
8309c1ab	363	AliError("Opening of file failed");
	364	return;
	365	}
	366
	367	TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal");
	368	Int_t nentries = (Int_t) zdcSignal->GetEntries();
	369
	370	Float_t *entry, hitsSpec[7];
	371	Int_t pl, i, j, k, iev=0, rnd[125], volume[2];
48642b09	372	for(pl=0;pl<125;pl++) rnd[pl] = 0;
8574b308	373	if(numEvents > 125) {
8309c1ab	374	AliWarning(Form("numEvents (%d) is larger than 125", numEvents));
	375	numEvents = 125;
	376	}
	377	for(pl=0;pl<numEvents;pl++){
	378	rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223	379	if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab	380	//printf(" rnd[%d] = %d\n",pl,rnd[pl]);
	381	}
	382	// Sorting vector in ascending order with C function QSORT
	383	qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
	384	do{
	385	for(i=0; i<nentries; i++){
	386	zdcSignal->GetEvent(i);
	387	entry = zdcSignal->GetArgs();
	388	if(entry[0] == rnd[iev]){
	389	for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
	390	for(j=0; j<7; j++) hitsSpec[j] = entry[j+3];
48642b09	391	//
8309c1ab	392	Float_t lightQ = hitsSpec[4];
8309c1ab	393	Float_t lightC = hitsSpec[5];
78d18275	394	AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f",
8309c1ab	395	volume[0], volume[1], lightQ, lightC));
48642b09	396	//printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f",
48642b09	397	// volume[0], volume[1], lightQ, lightC);
acf9550c	398	if(volume[0] != 3) { // ZN or ZP
8309c1ab	399	pm[volume[0]-1][0] += lightC;
8309c1ab	400	pm[volume[0]-1][volume[1]] += lightQ;
48642b09	401	//printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
	402	// (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
	403	}
	404	else {
8574b308	405	if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
acf9550c	406	else pm[2][2] += lightQ; // ZEM 2
48642b09	407	//printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
48642b09	408	}
8309c1ab	409	}
	410	else if(entry[0] > rnd[iev]){
	411	iev++;
	412	continue;
	413	}
	414	}
	415	}while(iev<numEvents);
	416
	417	file->Close();
	418	delete file;
	419	}
	420
	421
	422	//_____________________________________________________________________________
	423	Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
	424	Int_t Res) const
	425	{
48642b09	426	// Evaluation of the ADC channel corresponding to the light yield Light
8a2624cc	427	Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
58e12fee	428	//printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,vADCch);
7f73eb6b	429
8a2624cc	430	return vADCch;
48642b09	431	}
8309c1ab	432
48642b09	433	//_____________________________________________________________________________
	434	Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
	435	{
8a2624cc	436	// Returns a pedestal for detector det, PM quad, channel with res.
8a2624cc	437	//
65b16e87	438	Float_t pedValue;
abf60186	439	// Normal run
abf60186	440	if(fIsCalibration == 0){
c35ed519	441	Int_t index=0, kNch=24;
83347831	442	if(Quad!=5){
c35ed519	443	if(Det==1) index = Quad+kNch*Res; // ZNC
	444	else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
	445	else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
	446	else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
	447	else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
83347831	448	}
c35ed519	449	else index = (Det-1)/3+22+kNch*Res; // Reference PMs
83347831	450	//
c35ed519	451	Float_t meanPed = fPedData->GetMeanPed(index);
c35ed519	452	Float_t pedWidth = fPedData->GetMeanPedWidth(index);
65b16e87	453	pedValue = gRandom->Gaus(meanPed,pedWidth);
abf60186	454	//
58e12fee	455	/*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
65b16e87	456	Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
abf60186	457	*/
abf60186	458	}
7f73eb6b	459	// To create calibration object
83347831	460	else{
65b16e87	461	if(Res == 0) pedValue = gRandom->Gaus((35.+10.gRandom->Rndm()),(0.5+0.2gRandom->Rndm())); //High gain
65b16e87	462	else pedValue = gRandom->Gaus((250.+100.gRandom->Rndm()),(3.5+2.gRandom->Rndm())); //Low gain
83347831	463	}
dbc8d7fc	464
65b16e87	465	return (Int_t) pedValue;
8309c1ab	466	}
	467
	468	//_____________________________________________________________________________
78d18275	469	AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab	470	{
8309c1ab	471
78d18275	472	Bool_t deleteManager = kFALSE;
48642b09	473
78d18275	474	AliCDBManager *manager = AliCDBManager::Instance();
78d18275	475	AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09	476
78d18275	477	if(!defstorage \|\| !(defstorage->Contains("ZDC"))){
	478	AliWarning("No default storage set or default storage doesn't contain ZDC!");
	479	manager->SetDefaultStorage(uri);
	480	deleteManager = kTRUE;
	481	}
	482
	483	AliCDBStorage *storage = manager->GetDefaultStorage();
	484
	485	if(deleteManager){
	486	AliCDBManager::Instance()->UnsetDefaultStorage();
	487	defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
	488	}
	489
	490	return storage;
	491	}
48642b09	492
78d18275	493	//_____________________________________________________________________________
6024ec85	494	AliZDCPedestals* AliZDCDigitizer::GetPedData() const
	495	{
	496
	497	// Getting pedestal calibration object for ZDC set
	498
	499	AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
	500	if(!entry) AliFatal("No calibration data loaded!");
	501
	502	AliZDCPedestals calibdata = dynamic_cast<AliZDCPedestals> (entry->GetObject());
	503	if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
	504
	505	return calibdata;
	506	}
	507
	508	//_____________________________________________________________________________
	509	AliZDCCalib* AliZDCDigitizer::GetCalibData() const
	510	{
	511
	512	// Getting calibration object for ZDC set
	513
	514	AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Calib");
	515	if(!entry) AliFatal("No calibration data loaded!");
	516
	517	AliZDCCalib calibdata = dynamic_cast<AliZDCCalib> (entry->GetObject());
	518	if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
	519
	520	return calibdata;
	521	}
	522
	523	//_____________________________________________________________________________
	524	AliZDCRecParam* AliZDCDigitizer::GetRecParam() const
78d18275	525	{
4fda3ba1	526
	527	// Getting calibration object for ZDC set
	528
6024ec85	529	AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/RecParam");
457a440d	530	if(!entry) AliFatal("No calibration data loaded!");
457a440d	531
6024ec85	532	AliZDCRecParam calibdata = dynamic_cast<AliZDCRecParam> (entry->GetObject());
457a440d	533	if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
8309c1ab	534
78d18275	535	return calibdata;
8309c1ab	536	}
4fda3ba1	537