ZDC/AliZDCReconstructor.cxx

   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 // class for ZDC reconstruction                                              //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24
  25 #include <TF1.h>
  26
  27 #include "AliRunLoader.h"
  28 #include "AliRawReader.h"
  29 #include "AliESDEvent.h"
  30 #include "AliZDCDigit.h"
  31 #include "AliZDCRawStream.h"
  32 #include "AliZDCReco.h"
  33 #include "AliZDCReconstructor.h"
  34 #include "AliZDCCalibData.h"
  35
  36
  37 ClassImp(AliZDCReconstructor)
  38
  39
  40 //_____________________________________________________________________________
  41 AliZDCReconstructor:: AliZDCReconstructor() :
  42
  43   fZNCen(new TF1("fZNCen",
  44         "(-2.287920+sqrt(2.287920*2.287920-4*(-0.007629)*(11.921710-x)))/(2*(-0.007629))",0.,164.)),
  45   fZNPer(new TF1("fZNPer",
  46       "(-37.812280-sqrt(37.812280*37.812280-4*(-0.190932)*(-1709.249672-x)))/(2*(-0.190932))",0.,164.)),
  47   fZPCen(new TF1("fZPCen",
  48        "(-1.321353+sqrt(1.321353*1.321353-4*(-0.007283)*(3.550697-x)))/(2*(-0.007283))",0.,60.)),
  49   fZPPer(new TF1("fZPPer",
  50       "(-42.643308-sqrt(42.643308*42.643308-4*(-0.310786)*(-1402.945615-x)))/(2*(-0.310786))",0.,60.)),
  51   fZDCCen(new TF1("fZDCCen",
  52       "(-1.934991+sqrt(1.934991*1.934991-4*(-0.004080)*(15.111124-x)))/(2*(-0.004080))",0.,225.)),
  53   fZDCPer(new TF1("fZDCPer",
  54       "(-34.380639-sqrt(34.380639*34.380639-4*(-0.104251)*(-2612.189017-x)))/(2*(-0.104251))",0.,225.)),
  55   fbCen(new TF1("fbCen","-0.056923+0.079703*x-0.0004301*x*x+0.000001366*x*x*x",0.,220.)),
  56   fbPer(new TF1("fbPer","17.943998-0.046846*x+0.000074*x*x",0.,220.)),
  57   //
  58   fZEMn(new TF1("fZEMn","121.7-0.1934*x+0.00007565*x*x",0.,1200.)),
  59   fZEMp(new TF1("fZEMp","80.05-0.1315*x+0.00005327*x*x",0.,1200.)),
  60   fZEMsp(new TF1("fZEMsp","201.7-0.325*x+0.0001292*x*x",0.,1200.)),
  61   fZEMb(new TF1("fZEMb",
  62         "13.83-0.02851*x+5.101e-5*x*x-7.305e-8*x*x*x+5.101e-11*x*x*x*x-1.25e-14*x*x*x*x*x",0.,1200.)),
  63   //
  64   fCalibData(GetCalibData())
  65
  66 {
  67   // **** Default constructor
  68
  69 }
  70
  71
  72 //_____________________________________________________________________________
  73 AliZDCReconstructor::~AliZDCReconstructor()
  74 {
  75 // destructor
  76
  77   delete fZNCen;
  78   delete fZNPer;
  79   delete fZPCen;
  80   delete fZPPer;
  81   delete fZDCCen;
  82   delete fZDCPer;
  83   delete fbCen;
  84   delete fbPer;
  85   delete fZEMn;
  86   delete fZEMp;
  87   delete fZEMsp;
  88   delete fZEMb;
  89
  90 }
  91
  92
  93 //_____________________________________________________________________________
  94 void AliZDCReconstructor::Reconstruct(TTree* digitsTree, TTree* clustersTree) const
  95 {
  96   // *** Local ZDC reconstruction for digits
  97   // Works on the current event
  98
  99   // Retrieving calibration data
 100   Float_t meanPed[47];
 101   for(Int_t jj=0; jj<47; jj++) meanPed[jj] = fCalibData->GetMeanPed(jj);
 102
 103   // get digits
 104   AliZDCDigit digit;
 105   AliZDCDigit* pdigit = &digit;
 106   digitsTree->SetBranchAddress("ZDC", &pdigit);
 107
 108   // loop over digits
 109   Float_t tZN1CorrHG[]={0.,0.,0.,0.,0.}, tZP1CorrHG[]={0.,0.,0.,0.,0.};
 110   Float_t dZEMCorrHG=0.;
 111   Float_t tZN2CorrHG[]={0.,0.,0.,0.,0.}, tZP2CorrHG[]={0.,0.,0.,0.,0.};
 112   Float_t tZN1CorrLG[]={0.,0.,0.,0.,0.}, tZP1CorrLG[]={0.,0.,0.,0.,0.};
 113   Float_t dZEMCorrLG=0.;
 114   Float_t tZN2CorrLG[]={0.,0.,0.,0.,0.}, tZP2CorrLG[]={0.,0.,0.,0.,0.};
 115
 116   //printf("\n\t # of digits in tree: %d\n",(Int_t) digitsTree->GetEntries());
 117   for (Int_t iDigit = 0; iDigit < (digitsTree->GetEntries()/2); iDigit++) {
 118     digitsTree->GetEntry(iDigit);
 119     if (!pdigit) continue;
 120     //pdigit->Print("");
 121     //
 122     Int_t det = digit.GetSector(0);
 123     Int_t quad = digit.GetSector(1);
 124     Int_t pedindex = -1;
 125     //printf("\n\t #%d det %d quad %d", iDigit, det, quad);
 126     //
 127     if(det == 1){ // *** ZN1
 128        pedindex = quad;
 129        tZN1CorrHG[quad] = (Float_t) (digit.GetADCValue(0)-meanPed[pedindex]);
 130        if(tZN1CorrHG[quad]<0.) tZN1CorrHG[quad] = 0.;
 131        tZN1CorrLG[quad] = (Float_t) (digit.GetADCValue(1)-meanPed[pedindex+5]);
 132        if(tZN1CorrLG[quad]<0.) tZN1CorrLG[quad] = 0.;
 133        //printf("\t pedindex %d tZN1CorrHG[%d] = %1.0f tZN1CorrLG[%d] = %1.0f",
 134        //       pedindex, quad, tZN1CorrHG[quad], quad, tZN1CorrLG[quad]);
 135     }
 136     else if(det == 2){ // *** ZP1
 137        pedindex = quad+10;
 138        tZP1CorrHG[quad] = (Float_t) (digit.GetADCValue(0)-meanPed[pedindex]);
 139        if(tZP1CorrLG[quad]<0.) tZP1CorrLG[quad] = 0.;
 140        tZP1CorrLG[quad] = (Float_t) (digit.GetADCValue(1)-meanPed[pedindex+5]);
 141        if(tZP1CorrHG[quad]<0.) tZP1CorrHG[quad] = 0.;
 142        //printf("\t pedindex %d tZP1CorrHG[%d] = %1.0f tZP1CorrLG[%d] = %1.0f",
 143        //       pedindex, quad, tZP1CorrHG[quad], quad, tZP1CorrLG[quad]);
 144     }
 145     else if(det == 3){
 146        if(quad == 1){       // *** ZEM1
 147          pedindex = quad+19;
 148          dZEMCorrHG += (Float_t) (digit.GetADCValue(0)-meanPed[pedindex]);
 149          if(dZEMCorrHG<0.) dZEMCorrHG = 0.;
 150          dZEMCorrLG += (Float_t) (digit.GetADCValue(1)-meanPed[pedindex+2]);
 151          if(dZEMCorrLG<0.) dZEMCorrLG = 0.;
 152          //printf("\t pedindex %d ADC(0) = %d ped = %1.0f ADCCorr = %1.0f\n",
 153          //     pedindex, digit.GetADCValue(0), meanPed[pedindex], dZEMCorrHG);
 154          //printf("\t pedindex %d ADC(1) = %d ped = %1.0f ADCCorr = %1.0f\n",
 155          //     pedindex+2, digit.GetADCValue(1), meanPed[pedindex+2], dZEMCorrLG);
 156          ////printf("\t pedindex %d dZEMCorrHG = %1.0f dZEMCorrLG = %1.0f\n", pedindex, dZEMCorrHG, dZEMCorrLG);
 157        }
 158        else if(quad == 2){  // *** ZEM1
 159          pedindex = quad+19;
 160          dZEMCorrHG += (Float_t) (digit.GetADCValue(0)-meanPed[pedindex]);
 161          if(dZEMCorrHG<0.) dZEMCorrHG = 0.;
 162          dZEMCorrLG += (Float_t) (digit.GetADCValue(1)-meanPed[pedindex+2]);
 163          if(dZEMCorrLG<0.) dZEMCorrLG = 0.;
 164          //printf("\t pedindex %d ADC(0) = %d ped = %1.0f ADCCorr = %1.0f\n",
 165          //     pedindex, digit.GetADCValue(0), meanPed[pedindex], dZEMCorrHG);
 166          //printf("\t pedindex %d ADC(1) = %d ped = %1.0f ADCCorr = %1.0f\n",
 167          //     pedindex+2, digit.GetADCValue(1),meanPed[pedindex+2], dZEMCorrLG);
 168          ////printf("\t pedindex %d dZEMCorrHG = %1.0f dZEMCorrLG = %1.0f\n", pedindex, dZEMCorrHG, dZEMCorrLG);
 169        }
 170     }
 171     else if(det == 4){  // *** ZN2
 172        pedindex = quad+24;
 173        tZN2CorrHG[quad] = (Float_t) (digit.GetADCValue(0)-meanPed[pedindex]);
 174        if(tZN2CorrHG[quad]<0.) tZN2CorrHG[quad] = 0.;
 175        tZN2CorrLG[quad] = (Float_t) (digit.GetADCValue(1)-meanPed[pedindex+5]);
 176        if(tZN2CorrLG[quad]<0.) tZN2CorrLG[quad] = 0.;
 177        //printf("\t pedindex %d tZN2CorrHG[%d] = %1.0f tZN2CorrLG[%d] = %1.0f\n",
 178        //       pedindex, quad, tZN2CorrHG[quad], quad, tZN2CorrLG[quad]);
 179     }
 180     else if(det == 5){  // *** ZP2
 181        pedindex = quad+34;
 182        tZP2CorrHG[quad] = (Float_t) (digit.GetADCValue(0)-meanPed[pedindex]);
 183        if(tZP2CorrHG[quad]<0.) tZP2CorrHG[quad] = 0.;
 184        tZP2CorrLG[quad] = (Float_t) (digit.GetADCValue(1)-meanPed[pedindex+5]);
 185        if(tZP2CorrLG[quad]<0.) tZP2CorrLG[quad] = 0.;
 186        //printf("\t pedindex %d tZP2CorrHG[%d] = %1.0f tZP2CorrLG[%d] = %1.0f\n",
 187        //       pedindex, quad, tZP2CorrHG[quad], quad, tZP2CorrLG[quad]);
 188     }
 189   }
 190
 191   // reconstruct the event
 192     ReconstructEvent(clustersTree, tZN1CorrHG, tZP1CorrHG, tZN2CorrHG,
 193         tZP2CorrHG, tZN1CorrLG, tZP1CorrLG, tZN2CorrLG,
 194         tZP2CorrLG, dZEMCorrHG);
 195
 196 }
 197
 198 //_____________________________________________________________________________
 199 void AliZDCReconstructor::Reconstruct(AliRawReader* rawReader, TTree* clustersTree) const
 200 {
 201   // *** ZDC raw data reconstruction
 202   // Works on the current event
 203
 204   // Retrieving calibration data
 205   Float_t meanPed[47];
 206   for(Int_t jj=0; jj<47; jj++) meanPed[jj] = fCalibData->GetMeanPed(jj);
 207
 208   rawReader->Reset();
 209
 210   // loop over raw data rawDatas
 211   Float_t tZN1CorrHG[]={0.,0.,0.,0.,0.}, tZP1CorrHG[]={0.,0.,0.,0.,0.};
 212   Float_t dZEMCorrHG=0.;
 213   Float_t tZN2CorrHG[]={0.,0.,0.,0.,0.}, tZP2CorrHG[]={0.,0.,0.,0.,0.};
 214   Float_t tZN1CorrLG[]={0.,0.,0.,0.,0.}, tZP1CorrLG[]={0.,0.,0.,0.,0.};
 215   Float_t dZEMCorrLG=0.;
 216   Float_t tZN2CorrLG[]={0.,0.,0.,0.,0.}, tZP2CorrLG[]={0.,0.,0.,0.,0.};
 217   //
 218   AliZDCRawStream rawData(rawReader);
 219   while (rawData.Next()) {
 220     if(rawData.IsADCDataWord()){
 221       Int_t det = rawData.GetSector(0);
 222       Int_t quad = rawData.GetSector(1);
 223       Int_t gain = rawData.GetADCGain();
 224       Int_t pedindex;
 225       //
 226       if(det == 1){
 227         pedindex = quad;
 228         if(gain == 0) tZN1CorrHG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex]);
 229         else tZN1CorrLG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex+5]);
 230       }
 231       else if(det == 2){
 232         pedindex = quad+10;
 233         if(gain == 0) tZP1CorrHG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex]);
 234         else tZP1CorrLG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex+5]);
 235       }
 236       else if(det == 3){
 237         if(quad==1){
 238           pedindex = quad+20;
 239           if(gain == 0) dZEMCorrHG += (Float_t) (rawData.GetADCValue()-meanPed[pedindex]);
 240           else dZEMCorrLG += (Float_t) (rawData.GetADCValue()-meanPed[pedindex+2]);
 241         }
 242         else if(quad==2){
 243           pedindex = rawData.GetSector(1)+21;
 244           if(gain == 0) dZEMCorrHG += (Float_t) (rawData.GetADCValue()-meanPed[pedindex]);
 245           else dZEMCorrLG += (Float_t) (rawData.GetADCValue()-meanPed[pedindex+2]);
 246         }
 247       }
 248       else if(det == 4){
 249         pedindex = rawData.GetSector(1)+24;
 250         if(gain == 0) tZN2CorrHG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex]);
 251         else tZN2CorrLG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex+2]);
 252       }
 253       else if(det == 5){
 254         pedindex = rawData.GetSector(1)+34;
 255         if(gain == 0) tZP2CorrHG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex]);
 256         else tZP2CorrLG[quad]  += (Float_t) (rawData.GetADCValue()-meanPed[pedindex+5]);
 257       }
 258     }
 259   }
 260
 261   // reconstruct the event
 262     ReconstructEvent(clustersTree, tZN1CorrHG, tZP1CorrHG, tZN2CorrHG,
 263         tZP2CorrHG, tZN1CorrLG, tZP1CorrLG, tZN2CorrLG,
 264         tZP2CorrLG, dZEMCorrHG);
 265
 266 }
 267
 268 //_____________________________________________________________________________
 269 void AliZDCReconstructor::ReconstructEvent(TTree *clustersTree,
 270                 Float_t* ZN1ADCCorrHG, Float_t* ZP1ADCCorrHG,
 271                 Float_t* ZN2ADCCorrHG, Float_t* ZP2ADCCorrHG,
 272                 Float_t* ZN1ADCCorrLG, Float_t* ZP1ADCCorrLG,
 273                 Float_t* ZN2ADCCorrLG, Float_t* ZP2ADCCorrLG,
 274                 Float_t corrADCZEMHG) const
 275 {
 276   // ***** Reconstruct one event
 277
 278   // *** RECONSTRUCTION FROM SIMULATED DATA
 279   // It passes trhough the no. of phe which is known from simulations
 280   //  ---      ADCchannel -> photoelectrons
 281   // NB-> PM gain = 10^(5), ADC resolution = 6.4*10^(-7)
 282   // Move to V965 (E.S.,15/09/04) NB-> PM gain = 10^(5), ADC resolution = 8*10^(-7)
 283   //Float_t zn1phe, zp1phe, zemphe, zn2phe, zp2phe, convFactor = 0.08;
 284   //zn1phe  = ZN1Corr/convFactor;
 285   //zp1phe  = ZP1Corr/convFactor;
 286   //zemphe = ZEMCorr/convFactor;
 287   //zn2phe  = ZN2Corr/convFactor;
 288   //zp2phe  = ZP2Corr/convFactor;
 289   ////if AliDebug(1,Form("\n    znphe = %f, zpphe = %f, zemphe = %f\n",znphe, zpphe, zemphe);
 290   //
 291   ////  ---      Energy calibration
 292   //// Conversion factors for hadronic ZDCs goes from phe yield to TRUE
 293   //// incident energy (conversion from GeV to TeV is included); while for EM
 294   //// calos conversion is from light yield to detected energy calculated by
 295   //// GEANT NB -> ZN and ZP conversion factors are constant since incident
 296   //// spectators have all the same energy, ZEM energy is obtained through a
 297   //// fit over the whole range of incident particle energies
 298   //// (obtained with full HIJING simulations)
 299   //Float_t zn1energy, zp1energy, zemenergy, zdc1energy, zn2energy, zp2energy, zdc2energy;
 300   //Float_t zn1phexTeV=329., zp1phexTeV=369., zn2phexTeV=329., zp2phexTeV=369.;
 301   //zn1energy  = zn1phe/zn1phexTeV;
 302   //zp1energy  = zp1phe/zp1phexTeV;
 303   //zdc1energy = zn1energy+zp1energy;
 304   //zn2energy  = zn2phe/zn2phexTeV;
 305   //zp2energy  = zp2phe/zp2phexTeV;
 306   //zdc2energy = zn2energy+zp2energy;
 307   //zemenergy = -4.81+0.3238*zemphe;
 308   //if(zemenergy<0) zemenergy=0;
 309   ////  if AliDebug(1,Form("    znenergy = %f TeV, zpenergy = %f TeV, zdcenergy = %f GeV, "
 310   ////                     "\n          zemenergy = %f TeV\n", znenergy, zpenergy,
 311   ////                     zdcenergy, zemenergy);
 312   ////  if(zdcenergy==0)
 313   ////    if AliDebug(1,Form("\n\n      ###     ATTENZIONE!!! -> ev# %d: znenergy = %f TeV, zpenergy = %f TeV, zdcenergy = %f GeV, "
 314   ////                       " zemenergy = %f TeV\n\n", fMerger->EvNum(), znenergy, zpenergy, zdcenergy, zemenergy);
 315
 316   //
 317   // *** RECONSTRUCTION FROM "REAL" DATA
 318   //
 319   // Retrieving calibration data
 320   Float_t equalCoeffZN1[5], equalCoeffZP1[5], equalCoeffZN2[5], equalCoeffZP2[5];
 321   for(Int_t ji=0; ji<5; ji++){
 322      equalCoeffZN1[ji] = fCalibData->GetZN1EqualCoeff(ji);
 323      equalCoeffZP1[ji] = fCalibData->GetZP1EqualCoeff(ji);
 324      equalCoeffZN2[ji] = fCalibData->GetZN2EqualCoeff(ji);
 325      equalCoeffZP2[ji] = fCalibData->GetZP2EqualCoeff(ji);
 326   }
 327   //
 328   Float_t calibEne[4];
 329   for(Int_t ij=0; ij<4; ij++) calibEne[ij] = fCalibData->GetEnCalib(ij);
 330   //
 331   Float_t endPointZEM = fCalibData->GetZEMEndValue();
 332   Float_t cutFractionZEM = fCalibData->GetZEMCutFraction();
 333   Float_t dZEMSup = fCalibData->GetDZEMSup();
 334   Float_t dZEMInf = fCalibData->GetDZEMInf();
 335   //
 336   Float_t cutValueZEM = endPointZEM*cutFractionZEM;
 337   Float_t supValueZEM = cutValueZEM+(endPointZEM*dZEMSup);
 338   Float_t infValueZEM = cutValueZEM-(endPointZEM*dZEMInf);
 339   //
 340   Float_t maxValEZN1 = fCalibData->GetEZN1MaxValue();
 341   Float_t maxValEZP1 = fCalibData->GetEZP1MaxValue();
 342   Float_t maxValEZDC1 = fCalibData->GetEZDC1MaxValue();
 343   Float_t maxValEZN2 = fCalibData->GetEZN2MaxValue();
 344   Float_t maxValEZP2 = fCalibData->GetEZP2MaxValue();
 345   Float_t maxValEZDC2 = fCalibData->GetEZDC2MaxValue();
 346   //
 347   //printf("\n\t AliZDCReconstructor -> ZEMEndPoint %1.0f, ZEMCutValue %1.0f,"
 348   //   " ZEMSupValue %1.0f, ZEMInfValue %1.0f\n",endPointZEM,cutValueZEM,supValueZEM,infValueZEM);
 349
 350   // Equalization of detector responses
 351   Float_t equalTowZN1HG[5], equalTowZN2HG[5], equalTowZP1HG[5], equalTowZP2HG[5];
 352   Float_t equalTowZN1LG[5], equalTowZN2LG[5], equalTowZP1LG[5], equalTowZP2LG[5];
 353   for(Int_t gi=0; gi<5; gi++){
 354      equalTowZN1HG[gi] = ZN1ADCCorrHG[gi]*equalCoeffZN1[gi];
 355      equalTowZP1HG[gi] = ZP1ADCCorrHG[gi]*equalCoeffZP1[gi];
 356      equalTowZN2HG[gi] = ZN2ADCCorrHG[gi]*equalCoeffZN2[gi];
 357      equalTowZP2HG[gi] = ZP2ADCCorrHG[gi]*equalCoeffZP2[gi];
 358      //
 359      equalTowZN1LG[gi] = ZN1ADCCorrLG[gi]*equalCoeffZN1[gi];
 360      equalTowZP1LG[gi] = ZP1ADCCorrLG[gi]*equalCoeffZP1[gi];
 361      equalTowZN2LG[gi] = ZN2ADCCorrLG[gi]*equalCoeffZN2[gi];
 362      equalTowZP2LG[gi] = ZP2ADCCorrLG[gi]*equalCoeffZP2[gi];
 363   }
 364
 365   // Energy calibration of detector responses
 366   Float_t calibTowZN1HG[5], calibTowZN2HG[5], calibTowZP1HG[5], calibTowZP2HG[5];
 367   Float_t calibSumZN1HG=0., calibSumZN2HG=0., calibSumZP1HG=0., calibSumZP2HG=0.;
 368   Float_t calibTowZN1LG[5], calibTowZN2LG[5], calibTowZP1LG[5], calibTowZP2LG[5];
 369   Float_t calibSumZN1LG=0., calibSumZN2LG=0., calibSumZ12LG=0., calibSumZP2LG=0.;
 370   for(Int_t gi=0; gi<5; gi++){
 371      calibTowZN1HG[gi] = equalTowZN1HG[gi]*calibEne[0];
 372      calibTowZP1HG[gi] = equalTowZP1HG[gi]*calibEne[1];
 373      calibTowZN2HG[gi] = equalTowZN2HG[gi]*calibEne[2];
 374      calibTowZP2HG[gi] = equalTowZP2HG[gi]*calibEne[3];
 375      calibSumZN1HG += calibTowZN1HG[gi];
 376      calibSumZP1HG += calibTowZP1HG[gi];
 377      calibSumZN2HG += calibTowZN2HG[gi];
 378      calibSumZP2HG += calibTowZP2HG[gi];
 379      //
 380      calibTowZN1LG[gi] = equalTowZN1LG[gi]*calibEne[0];
 381      calibTowZP1LG[gi] = equalTowZP1LG[gi]*calibEne[1];
 382      calibTowZN2LG[gi] = equalTowZN2LG[gi]*calibEne[2];
 383      calibTowZP2LG[gi] = equalTowZP2LG[gi]*calibEne[3];
 384      calibSumZN1LG += calibTowZN1LG[gi];
 385      calibSumZ12LG += calibTowZP1LG[gi];
 386      calibSumZN2LG += calibTowZN2LG[gi];
 387      calibSumZP2LG += calibTowZP2LG[gi];
 388   }
 389
 390   //  ---      Number of detected spectator nucleons
 391   //  *** N.B. -> It works only in Pb-Pb
 392   Int_t nDetSpecNLeft, nDetSpecPLeft, nDetSpecNRight, nDetSpecPRight;
 393   nDetSpecNLeft = (Int_t) (calibSumZN1HG/2.760);
 394   nDetSpecPLeft = (Int_t) (calibSumZP1HG/2.760);
 395   nDetSpecNRight = (Int_t) (calibSumZN2HG/2.760);
 396   nDetSpecPRight = (Int_t) (calibSumZP2HG/2.760);
 397   /*printf("\n\t AliZDCReconstructor -> nDetSpecNLeft %d, nDetSpecPLeft %d,"
 398     " nDetSpecNRight %d, nDetSpecPRight %d\n",nDetSpecNLeft, nDetSpecPLeft,
 399     nDetSpecNRight, nDetSpecPRight);*/
 400
 401   //  ---      Number of generated spectator nucleons (from HIJING parameterization)
 402   Int_t nGenSpecNLeft=0, nGenSpecPLeft=0, nGenSpecLeft=0;
 403   Int_t nGenSpecNRight=0, nGenSpecPRight=0, nGenSpecRight=0;
 404   Double_t impPar=0.;
 405   //
 406   // *** RECONSTRUCTION FROM SIMULATED DATA
 407   // Cut value for Ezem (GeV)
 408   // ### Results from production  -> 0<b<18 fm (Apr 2002)
 409   /*Float_t eZEMCut = 420.;
 410   Float_t deltaEZEMSup = 690.;
 411   Float_t deltaEZEMInf = 270.;
 412   if(zemenergy > (eZEMCut+deltaEZEMSup)){
 413     nGenSpecNLeft  = (Int_t) (fZNCen->Eval(ZN1CalibSum));
 414     nGenSpecPLeft  = (Int_t) (fZPCen->Eval(ZP1CalibSum));
 415     nGenSpecLeft   = (Int_t) (fZDCCen->Eval(ZN1CalibSum+ZP1CalibSum));
 416     nGenSpecNRight = (Int_t) (fZNCen->Eval(ZN2CalibSum));
 417     nGenSpecPRight = (Int_t) (fZNCen->Eval(ZP2CalibSum));
 418     nGenSpecRight  = (Int_t) (fZNCen->Eval(ZN2CalibSum+ZP2CalibSum));
 419     impPar  = fbCen->Eval(ZN1CalibSum+ZP1CalibSum);
 420   }
 421   else if(zemenergy < (eZEMCut-deltaEZEMInf)){
 422     nGenSpecNLeft = (Int_t) (fZNPer->Eval(ZN1CalibSum));
 423     nGenSpecPLeft = (Int_t) (fZPPer->Eval(ZP1CalibSum));
 424     nGenSpecLeft  = (Int_t) (fZDCPer->Eval(ZN1CalibSum+ZP1CalibSum));
 425     impPar   = fbPer->Eval(ZN1CalibSum+ZP1CalibSum);
 426   }
 427   else if(zemenergy >= (eZEMCut-deltaEZEMInf) && zemenergy <= (eZEMCut+deltaEZEMSup)){
 428     nGenSpecNLeft = (Int_t) (fZEMn->Eval(zemenergy));
 429     nGenSpecPLeft = (Int_t) (fZEMp->Eval(zemenergy));
 430     nGenSpecLeft  = (Int_t)(fZEMsp->Eval(zemenergy));
 431     impPar   =  fZEMb->Eval(zemenergy);
 432   }
 433   // ### Results from production  -> 0<b<18 fm (Apr 2002)
 434   if(ZN1CalibSum>162.)  nGenSpecNLeft = (Int_t) (fZEMn->Eval(zemenergy));
 435   if(ZP1CalibSum>59.75)  nGenSpecPLeft = (Int_t) (fZEMp->Eval(zemenergy));
 436   if(ZN1CalibSum+ZP1CalibSum>221.5) nGenSpecLeft  = (Int_t)(fZEMsp->Eval(zemenergy));
 437   if(ZN1CalibSum+ZP1CalibSum>220.)  impPar    =  fZEMb->Eval(zemenergy);
 438   */
 439   //
 440   //
 441   // *** RECONSTRUCTION FROM REAL DATA
 442   //
 443   if(corrADCZEMHG > supValueZEM){
 444     nGenSpecNLeft  = (Int_t) (fZNCen->Eval(calibSumZN1HG));
 445     nGenSpecPLeft  = (Int_t) (fZPCen->Eval(calibSumZP1HG));
 446     nGenSpecLeft   = (Int_t) (fZDCCen->Eval(calibSumZN1HG+calibSumZP1HG));
 447     nGenSpecNRight = (Int_t) (fZNCen->Eval(calibSumZN2HG));
 448     nGenSpecPRight = (Int_t) (fZNCen->Eval(calibSumZP2HG));
 449     nGenSpecRight  = (Int_t) (fZNCen->Eval(calibSumZN2HG+calibSumZP2HG));
 450     impPar  = fbCen->Eval(calibSumZN1HG+calibSumZP1HG);
 451   }
 452   else if(corrADCZEMHG < infValueZEM){
 453     nGenSpecNLeft = (Int_t) (fZNPer->Eval(calibSumZN1HG));
 454     nGenSpecPLeft = (Int_t) (fZPPer->Eval(calibSumZP1HG));
 455     nGenSpecLeft  = (Int_t) (fZDCPer->Eval(calibSumZN1HG+calibSumZP1HG));
 456     impPar   = fbPer->Eval(calibSumZN1HG+calibSumZP1HG);
 457   }
 458   else if(corrADCZEMHG >= infValueZEM && corrADCZEMHG <= supValueZEM){
 459     nGenSpecNLeft = (Int_t) (fZEMn->Eval(corrADCZEMHG));
 460     nGenSpecPLeft = (Int_t) (fZEMp->Eval(corrADCZEMHG));
 461     nGenSpecLeft  = (Int_t)(fZEMsp->Eval(corrADCZEMHG));
 462     impPar   =  fZEMb->Eval(corrADCZEMHG);
 463   }
 464   //
 465   if(calibSumZN1HG/maxValEZN1>1.)  nGenSpecNLeft = (Int_t) (fZEMn->Eval(corrADCZEMHG));
 466   if(calibSumZP1HG/maxValEZP1>1.)  nGenSpecPLeft = (Int_t) (fZEMp->Eval(corrADCZEMHG));
 467   if((calibSumZN1HG+calibSumZP1HG/maxValEZDC1)>1.){
 468      nGenSpecLeft = (Int_t)(fZEMsp->Eval(corrADCZEMHG));
 469      impPar = fZEMb->Eval(corrADCZEMHG);
 470   }
 471   if(calibSumZN2HG/maxValEZN2>1.)  nGenSpecNRight = (Int_t) (fZEMn->Eval(corrADCZEMHG));
 472   if(calibSumZP2HG/maxValEZP2>1.)  nGenSpecPRight = (Int_t) (fZEMp->Eval(corrADCZEMHG));
 473   if((calibSumZN2HG+calibSumZP2HG/maxValEZDC2)>1.) nGenSpecRight = (Int_t)(fZEMsp->Eval(corrADCZEMHG));
 474   //
 475   if(nGenSpecNLeft>125)    nGenSpecNLeft=125;
 476   else if(nGenSpecNLeft<0) nGenSpecNLeft=0;
 477   if(nGenSpecPLeft>82)     nGenSpecPLeft=82;
 478   else if(nGenSpecPLeft<0) nGenSpecPLeft=0;
 479   if(nGenSpecLeft>207)     nGenSpecLeft=207;
 480   else if(nGenSpecLeft<0)  nGenSpecLeft=0;
 481
 482   //  ---      Number of generated participants (from HIJING parameterization)
 483   Int_t nPart, nPartTotLeft, nPartTotRight;
 484   nPart = 207-nGenSpecNLeft-nGenSpecPLeft;
 485   nPartTotLeft = 207-nGenSpecLeft;
 486   nPartTotRight = 207-nGenSpecRight;
 487   if(nPart<0) nPart=0;
 488   if(nPartTotLeft<0) nPartTotLeft=0;
 489   if(nPartTotRight<0) nPartTotRight=0;
 490   //
 491   // *** DEBUG ***
 492   printf("\n\t AliZDCReconstructor -> calibSumZN1HG %1.0f, calibSumZP1HG %1.0f,"
 493       "  calibSumZN2HG %1.0f, calibSumZP2HG %1.0f, corrADCZEMHG %1.0f\n",
 494       calibSumZN1HG,calibSumZP1HG,calibSumZN2HG,calibSumZP2HG,corrADCZEMHG);
 495   printf("\t AliZDCReconstructor -> nGenSpecNLeft %d, nGenSpecPLeft %d, nGenSpecLeft %d\n"
 496       "\t\t nGenSpecNRight %d, nGenSpecPRight %d, nGenSpecRight %d\n",
 497       nGenSpecNLeft, nGenSpecPLeft, nGenSpecLeft,
 498       nGenSpecNRight, nGenSpecPRight, nGenSpecRight);
 499   printf("\t AliZDCReconstructor ->  NpartL %d,  NpartR %d,  b %1.2f fm\n\n",nPartTotLeft, nPartTotRight, impPar);
 500
 501   // create the output tree
 502   AliZDCReco reco(calibSumZN1HG, calibSumZP1HG, calibSumZN2HG, calibSumZP2HG,
 503                   calibTowZN1LG, calibTowZN2LG, calibTowZP1LG, calibTowZP2LG,
 504                   corrADCZEMHG,
 505                   nDetSpecNLeft, nDetSpecPLeft, nDetSpecNRight, nDetSpecPRight,
 506                   nGenSpecNLeft, nGenSpecPLeft, nGenSpecLeft, nGenSpecNRight,
 507                   nGenSpecPRight, nGenSpecRight,
 508                   nPartTotLeft, nPartTotRight, impPar);
 509
 510   AliZDCReco* preco = &reco;
 511   const Int_t kBufferSize = 4000;
 512   clustersTree->Branch("ZDC", "AliZDCReco", &preco, kBufferSize);
 513
 514   // write the output tree
 515   clustersTree->Fill();
 516 }
 517
 518 //_____________________________________________________________________________
 519 void AliZDCReconstructor::FillZDCintoESD(TTree *clustersTree, AliESDEvent* esd) const
 520 {
 521   // fill energies and number of participants to the ESD
 522
 523   AliZDCReco reco;
 524   AliZDCReco* preco = &reco;
 525   clustersTree->SetBranchAddress("ZDC", &preco);
 526
 527   clustersTree->GetEntry(0);
 528   Double_t tZN1Ene[4], tZN2Ene[4];
 529   for(Int_t i=0; i<4; i++){
 530      tZN1Ene[i] = reco.GetZN1EnTow(i);
 531      tZN2Ene[i] = reco.GetZN2EnTow(i);
 532   }
 533   esd->SetZDC(tZN1Ene, tZN2Ene, reco.GetZN1Energy(), reco.GetZP1Energy(), reco.GetZEMsignal(),
 534               reco.GetZN2Energy(), reco.GetZP2Energy(),
 535               reco.GetNPartLeft());
 536
 537   /*esd->SetZDC(reco.GetZN1Energy(), reco.GetZP1Energy(), reco.GetZEMsignal(),
 538               reco.GetZN2Energy(), reco.GetZP2Energy(),
 539               reco.GetNPartLeft());*/
 540
 541   /*Double_t tZN1Ene[4], tZN2Ene[4];
 542   for(Int_t i=0; i<4; i++){
 543      tZN1Ene[i] = reco.GetZN1EnTow(i);
 544      tZN2Ene[i] = reco.GetZN2EnTow(i);
 545   }*/
 546   //esd->SetZN1TowerEnergy(tZN1Ene);
 547   //esd->SetZN2TowerEnergy(tZN2Ene);
 548
 549 }
 550
 551 //_____________________________________________________________________________
 552 AliCDBStorage* AliZDCReconstructor::SetStorage(const char *uri)
 553 {
 554   // Setting the storage
 555
 556   Bool_t deleteManager = kFALSE;
 557
 558   AliCDBManager *manager = AliCDBManager::Instance();
 559   AliCDBStorage *defstorage = manager->GetDefaultStorage();
 560
 561   if(!defstorage || !(defstorage->Contains("ZDC"))){
 562      AliWarning("No default storage set or default storage doesn't contain ZDC!");
 563      manager->SetDefaultStorage(uri);
 564      deleteManager = kTRUE;
 565   }
 566
 567   AliCDBStorage *storage = manager->GetDefaultStorage();
 568
 569   if(deleteManager){
 570     AliCDBManager::Instance()->UnsetDefaultStorage();
 571     defstorage = 0;   // the storage is killed by AliCDBManager::Instance()->Destroy()
 572   }
 573
 574   return storage;
 575 }
 576
 577 //_____________________________________________________________________________
 578 AliZDCCalibData* AliZDCReconstructor::GetCalibData() const
 579 {
 580
 581   // Getting calibration object for ZDC set
 582
 583   AliCDBEntry  *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data");
 584   if(!entry) AliFatal("No calibration data loaded!");
 585
 586   AliZDCCalibData *calibdata = dynamic_cast<AliZDCCalibData*>  (entry->GetObject());
 587   if(!calibdata)  AliFatal("Wrong calibration object in calibration  file!");
 588
 589   return calibdata;
 590 }