1 /**************************************************************************
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2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
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4 * Author: The ALICE Off-line Project. *
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5 * Contributors are mentioned in the code where appropriate. *
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7 * Permission to use, copy, modify and distribute this software and its *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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9 * without fee, provided that the above copyright notice appears in all *
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10 * copies and that both the copyright notice and this permission notice *
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11 * appear in the supporting documentation. The authors make no claims *
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12 * about the suitability of this software for any purpose. It is *
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13 * provided "as is" without express or implied warranty. *
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14 **************************************************************************/
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16 //_________________________________________________________________________
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17 // Base class for the cluster unfolding algorithm
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18 //*-- Author: Adam Matyja (SUBATECH)
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19 // Based on unfolding in clusterizerv1 done by Cynthia Hadjidakis
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20 //-- Unfolding for eta~0: Cynthia Hadjidakis - still in AliEMCALCLusterizerv1
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21 //-- Unfolding extension for whole EMCAL: Adam Matyja (SUBATECH & INP PAN)
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23 // unfolds the clusters having several local maxima.
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24 //////////////////////////////////////////////////////////////////////////////
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26 // --- ROOT system ---
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27 #include "TClonesArray.h"
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29 #include <TMinuit.h>
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31 // --- Standard library ---
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34 // --- AliRoot header files ---
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35 #include "AliEMCALUnfolding.h"
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36 #include "AliEMCALGeometry.h"
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37 #include "AliRunLoader.h"
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39 #include "AliEMCAL.h"
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40 #include "AliEMCALRecParam.h"
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41 #include "AliEMCALRecPoint.h"
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42 #include "AliEMCALDigit.h"
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43 #include "AliEMCALReconstructor.h"
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46 #include "AliCDBManager.h"
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47 class AliCDBStorage;
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48 #include "AliCDBEntry.h"
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50 Double_t AliEMCALUnfolding::fgSSPars[8]={0.9262,3.365,1.548,0.1625,-0.4195,0.,0.,2.332};
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51 Double_t AliEMCALUnfolding::fgPar5[3]={12.31,-0.007381,-0.06936};
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52 Double_t AliEMCALUnfolding::fgPar6[3]={0.05452,0.0001228,0.001361};
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54 ClassImp(AliEMCALUnfolding)
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56 //____________________________________________________________________________
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57 AliEMCALUnfolding::AliEMCALUnfolding():
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58 fNumberOfECAClusters(0),
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60 fThreshold(0.01),//10 MeV
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65 // ctor with the indication of the file where header Tree and digits Tree are stored
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70 //____________________________________________________________________________
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71 AliEMCALUnfolding::AliEMCALUnfolding(AliEMCALGeometry* geometry):
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72 fNumberOfECAClusters(0),
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74 fThreshold(0.01),//10 MeV
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79 // ctor with the indication of the file where header Tree and digits Tree are stored
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80 // use this contructor to avoid usage of Init() which uses runloader
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81 // change needed by HLT - MP
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84 AliFatal("AliEMCALUnfolding: Geometry not initialized.");
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89 //____________________________________________________________________________
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90 AliEMCALUnfolding::AliEMCALUnfolding(AliEMCALGeometry* geometry,Float_t ECALocMaxCut,Double_t *SSPars,Double_t *Par5,Double_t *Par6):
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91 fNumberOfECAClusters(0),
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92 fECALocMaxCut(ECALocMaxCut),
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93 fThreshold(0.01),//10 MeV
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98 // ctor with the indication of the file where header Tree and digits Tree are stored
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99 // use this contructor to avoid usage of Init() which uses runloader
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100 // change needed by HLT - MP
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103 AliFatal("AliEMCALUnfolding: Geometry not initialized.");
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106 for (i = 0; i < 8; i++) fgSSPars[i] = SSPars[i];
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107 for (i = 0; i < 3; i++) {
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108 fgPar5[i] = Par5[i];
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109 fgPar6[i] = Par6[i];
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114 //____________________________________________________________________________
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115 void AliEMCALUnfolding::Init()
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117 // Make all memory allocations which can not be done in default constructor.
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118 // Attach the Clusterizer task to the list of EMCAL tasks
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120 AliRunLoader *rl = AliRunLoader::Instance();
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121 if (rl && rl->GetAliRun()){
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122 AliEMCAL* emcal = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"));
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123 if(emcal)fGeom = emcal->GetGeometry();
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127 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
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129 AliDebug(1,Form("geom %p",fGeom));
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132 gMinuit = new TMinuit(100) ;
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136 //____________________________________________________________________________
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137 AliEMCALUnfolding::~AliEMCALUnfolding()
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142 //____________________________________________________________________________
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143 void AliEMCALUnfolding::SetInput(Int_t numberOfECAClusters,TObjArray *recPoints,TClonesArray *digitsArr)
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146 //Set input for unfolding purposes
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147 SetNumberOfECAClusters(numberOfECAClusters);
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148 SetRecPoints(recPoints);
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149 SetDigitsArr(digitsArr);
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152 //____________________________________________________________________________
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153 void AliEMCALUnfolding::MakeUnfolding()
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155 // Unfolds clusters using the shape of an ElectroMagnetic shower
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156 // Performs unfolding of all clusters
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158 if(fNumberOfECAClusters > 0){
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160 AliFatal("Did not get geometry from EMCALLoader") ;
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161 //Int_t nModulesToUnfold = fGeom->GetNCells();
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163 Int_t numberofNotUnfolded = fNumberOfECAClusters ;
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165 for(index = 0 ; index < numberofNotUnfolded ; index++){
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166 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(index) ) ;
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169 Int_t nMultipl = recPoint->GetMultiplicity() ;
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170 AliEMCALDigit ** maxAt = new AliEMCALDigit*[nMultipl] ;
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171 Float_t * maxAtEnergy = new Float_t[nMultipl] ;
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172 Int_t nMax = recPoint->GetNumberOfLocalMax(maxAt, maxAtEnergy,fECALocMaxCut,fDigitsArr) ;
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174 if( nMax > 1 ) { // if cluster is very flat (no pronounced maximum) then nMax = 0
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175 if(UnfoldClusterV2(recPoint, nMax, maxAt, maxAtEnergy) ){
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176 fRecPoints->Remove(recPoint);
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177 fRecPoints->Compress() ;//is it really needed
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179 fNumberOfECAClusters-- ;
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180 numberofNotUnfolded-- ;
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184 recPoint->SetNExMax(1) ; //Only one local maximum
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188 delete[] maxAtEnergy ;
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189 } else AliError("RecPoint NULL");
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190 } // rec point loop
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192 // End of Unfolding of clusters
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195 //____________________________________________________________________________
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196 Bool_t AliEMCALUnfolding::UnfoldClusterV2(AliEMCALRecPoint * iniTower,
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198 AliEMCALDigit ** maxAt,
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199 Float_t * maxAtEnergy)
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201 // Extended to whole EMCAL
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203 //**************************** part 1 *******************************************
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204 // Performs the unfolding of a cluster with nMax overlapping showers
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206 //printf("Original cluster E %f\n",iniTower->GetEnergy());
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208 Int_t nPar = 3 * nMax ;
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209 Float_t * fitparameters = new Float_t[nPar] ;
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212 AliFatal("Did not get geometry from EMCALLoader") ;
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214 Bool_t rv = FindFitV2(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
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217 // Fit failed, return (and remove cluster? - why? I leave the cluster)
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218 iniTower->SetNExMax(-1) ;
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219 delete[] fitparameters ;
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223 //**************************** part 2 *******************************************
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224 // create unfolded rec points and fill them with new energy lists
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225 // First calculate energy deposited in each sell in accordance with
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226 // fit (without fluctuations): efit[]
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227 // and later correct this number in acordance with actual energy
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230 Int_t nDigits = iniTower->GetMultiplicity() ;
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231 Float_t * efit = new Float_t[nDigits] ;//new fitted energy in cells
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232 Float_t xpar=0.,zpar=0.,epar=0. ;//center of gravity in cell units
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234 AliEMCALDigit * digit = 0 ;
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235 Int_t * digitsList = iniTower->GetDigitsList() ;
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237 Int_t iSupMod = 0 ;
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241 Int_t iphi = 0 ;//x direction
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242 Int_t ieta = 0 ;//z direstion
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247 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++)
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249 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(digitsList[iDigit] ) ) ;
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252 fGeom->GetCellIndex(digit->GetId(),iSupMod,iTower,iIphi,iIeta);
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253 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,iTower,
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254 iIphi, iIeta,iphi,ieta);
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255 EvalParsPhiDependence(digit->GetId(),fGeom);
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259 while(iparam < nPar )
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261 xpar = fitparameters[iparam] ;
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262 zpar = fitparameters[iparam+1] ;
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263 epar = fitparameters[iparam+2] ;
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265 efit[iDigit] += epar * ShowerShapeV2((Float_t)iphi - xpar,(Float_t)ieta - zpar) ;
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270 } else AliDebug(1,"Digit NULL part 2!");
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274 //**************************** part 3 *******************************************
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275 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
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276 // so that energy deposited in each cell is distributed between new clusters proportionally
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277 // to its contribution to efit
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279 Float_t * energiesList = iniTower->GetEnergiesList() ;
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280 Float_t ratio = 0 ;
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281 Float_t eDigit = 0. ;
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282 Int_t nSplittedClusters=(Int_t)nPar/3;
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284 Float_t * correctedEnergyList = new Float_t[nDigits*nSplittedClusters];
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285 //above - temporary table with energies after unfolding.
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286 //the order is following:
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287 //first cluster <first cell - last cell>,
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288 //second cluster <first cell - last cell>, etc.
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290 //**************************** sub-part 3.1 *************************************
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291 //here we check if energy of the cell in the cluster after unfolding is above threshold.
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292 //If not the energy from a given cell in the cluster is divided in correct proportions
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293 //in accordance to the other clusters and added to them and set to 0.
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296 while(iparam < nPar )
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298 xpar = fitparameters[iparam] ;
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299 zpar = fitparameters[iparam+1] ;
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300 epar = fitparameters[iparam+2] ;
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302 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++)
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304 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
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307 fGeom->GetCellIndex(digit->GetId(),iSupMod,iTower,iIphi,iIeta);
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308 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,iTower,
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309 iIphi, iIeta,iphi,ieta);
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311 EvalParsPhiDependence(digit->GetId(),fGeom);
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314 if(efit[iDigit]==0)
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316 correctedEnergyList[iparam/3*nDigits+iDigit] = 0;//correction here
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320 ratio = epar * ShowerShapeV2((Float_t)iphi - xpar,(Float_t)ieta - zpar) / efit[iDigit] ;
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321 eDigit = energiesList[iDigit] * ratio ;
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323 //add energy to temporary matrix
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324 correctedEnergyList[iparam/3*nDigits+iDigit] = eDigit;
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326 } else AliDebug(1,"NULL digit part 3");
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331 //**************************** sub-part 3.2 *************************************
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332 //here we correct energy for each cell and cluster
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333 Float_t maximumEne=0;
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334 Int_t maximumIndex=0;
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335 Bool_t isAnyBelowThreshold=kFALSE;
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336 // Float_t Threshold=0.01;
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337 Float_t * energyFraction = new Float_t[nSplittedClusters];
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338 Int_t iparam2 = 0 ;
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339 for(iDigit = 0 ; iDigit < nDigits ; iDigit++)
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341 isAnyBelowThreshold=kFALSE;
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343 for(iparam = 0 ; iparam < nPar ; iparam+=3)
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346 if(correctedEnergyList[iparam/3*nDigits+iDigit] < fThreshold ) isAnyBelowThreshold = kTRUE;
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347 if(correctedEnergyList[iparam/3*nDigits+iDigit] > maximumEne)
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349 maximumEne = correctedEnergyList[iparam/3*nDigits+iDigit];
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350 maximumIndex = iparam;
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352 }//end of loop over clusters after unfolding
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354 if(!isAnyBelowThreshold) continue; //no cluster-cell below threshold
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356 // printf("Correct E cell %f < %f, org Digit index %d, e = %f\n",correctedEnergyList[iparam/3*nDigits+iDigit],fThreshold,iDigit, energiesList[iDigit]);
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357 //if( energiesList[iDigit] < correctedEnergyList[iparam/3*nDigits+iDigit]) printf("\t What? \n");
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359 if(maximumEne < fThreshold)
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360 {//add all cluster cells and put energy into max index, other set to 0
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362 for(iparam = 0 ; iparam < nPar ; iparam+=3)
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364 maximumEne+=correctedEnergyList[iparam/3*nDigits+iDigit];
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365 correctedEnergyList[iparam/3*nDigits+iDigit]=0;
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367 correctedEnergyList[maximumIndex/3*nDigits+iDigit]=maximumEne;
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371 //divide energy of cell below threshold in the correct proportion and add to other cells
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372 maximumEne=0;//not used any more so use it for the energy sum
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373 for(iparam = 0 ; iparam < nPar ; iparam+=3)
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374 {//calculate energy sum
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375 if(correctedEnergyList[iparam/3*nDigits+iDigit] < fThreshold) energyFraction[iparam/3]=0;
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378 energyFraction[iparam/3]=1;
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379 maximumEne+=correctedEnergyList[iparam/3*nDigits+iDigit];
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381 }//end of loop over clusters after unfolding
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384 for(iparam = 0 ; iparam < nPar ; iparam+=3){//calculate fraction
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385 energyFraction[iparam/3] = energyFraction[iparam/3] * correctedEnergyList[iparam/3*nDigits+iDigit] / maximumEne;
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388 for(iparam = 0 ; iparam < nPar ; iparam+=3)
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389 {//add energy from cells below threshold to others
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390 if(energyFraction[iparam/3]>0) continue;
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393 for(iparam2 = 0 ; iparam2 < nPar ; iparam2+=3)
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395 correctedEnergyList[iparam2/3*nDigits+iDigit] += (energyFraction[iparam2/3] *
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396 correctedEnergyList[iparam/3*nDigits+iDigit]) ;
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398 correctedEnergyList[iparam/3*nDigits+iDigit] = 0;
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404 //digit energy to be set to 0
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405 for(iparam = 0 ; iparam < nPar ; iparam+=3)
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407 correctedEnergyList[iparam/3*nDigits+iDigit] = 0;
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409 }//new adam correction for is energy>0
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411 }//end of loop over digits
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412 delete[] energyFraction;
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414 //**************************** sub-part 3.3 *************************************
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415 //here we add digits to recpoints with corrected energy
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417 while(iparam < nPar )
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419 AliEMCALRecPoint * recPoint = 0 ;
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421 if(fNumberOfECAClusters >= fRecPoints->GetSize())
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422 fRecPoints->Expand(2*fNumberOfECAClusters) ;
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425 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
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426 recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
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430 fNumberOfECAClusters++ ;
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431 recPoint->SetNExMax(nSplittedClusters) ;
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433 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++)
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435 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
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438 if(digit && correctedEnergyList[iparam/3*nDigits+iDigit]>0. )
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440 if(correctedEnergyList[iparam/3*nDigits+iDigit]<fThreshold) printf("Final E cell %f < %f\n",correctedEnergyList[iparam/3*nDigits+iDigit],fThreshold);
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441 recPoint->AddDigit( *digit, correctedEnergyList[iparam/3*nDigits+iDigit], kFALSE ) ; //FIXME, need to study the shared case
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444 AliDebug(1,Form("NULL digit part3.3 or NULL energy=%f",correctedEnergyList[iparam/3*nDigits+iDigit]));
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447 } else AliError("NULL RecPoint");
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449 //protection from recpoint with no digits
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450 if(recPoint->GetMultiplicity()==0)
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452 delete (*fRecPoints)[fNumberOfECAClusters];
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453 //cout<<"size fRecPoints before "<<fRecPoints->GetSize()<<endl;
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454 fRecPoints->RemoveAt(fNumberOfECAClusters);
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455 //cout<<"size fRecPoints after "<<fRecPoints->GetSize()<<endl;
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456 fNumberOfECAClusters--;
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457 nSplittedClusters--;
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464 delete[] fitparameters ;
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466 delete[] correctedEnergyList ;
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472 //____________________________________________________________________________
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473 Bool_t AliEMCALUnfolding::UnfoldClusterV2old(AliEMCALRecPoint * iniTower,
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475 AliEMCALDigit ** maxAt,
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476 Float_t * maxAtEnergy)
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478 // Extended to whole EMCAL
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479 // Performs the unfolding of a cluster with nMax overlapping showers
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481 Int_t nPar = 3 * nMax ;
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482 Float_t * fitparameters = new Float_t[nPar] ;
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485 AliFatal("Did not get geometry from EMCALLoader") ;
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487 Bool_t rv = FindFitV2(iniTower, maxAt, maxAtEnergy, nPar, fitparameters) ;
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489 // Fit failed, return (and remove cluster? - why? I leave the cluster)
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490 iniTower->SetNExMax(-1) ;
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491 delete[] fitparameters ;
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495 // create unfolded rec points and fill them with new energy lists
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496 // First calculate energy deposited in each sell in accordance with
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497 // fit (without fluctuations): efit[]
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498 // and later correct this number in acordance with actual energy
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501 Int_t nDigits = iniTower->GetMultiplicity() ;
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502 Float_t * efit = new Float_t[nDigits] ;//new fitted energy in cells
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503 Float_t xpar=0.,zpar=0.,epar=0. ;//center of gravity in cell units
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505 AliEMCALDigit * digit = 0 ;
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506 Int_t * digitsList = iniTower->GetDigitsList() ;
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508 Int_t iSupMod = 0 ;
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512 Int_t iphi = 0 ;//x direction
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513 Int_t ieta = 0 ;//z direstion
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518 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
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519 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At(digitsList[iDigit] ) ) ;
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521 fGeom->GetCellIndex(digit->GetId(),iSupMod,iTower,iIphi,iIeta);
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522 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,iTower,
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523 iIphi, iIeta,iphi,ieta);
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524 EvalParsPhiDependence(digit->GetId(),fGeom);
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528 while(iparam < nPar ){
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529 xpar = fitparameters[iparam] ;
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530 zpar = fitparameters[iparam+1] ;
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531 epar = fitparameters[iparam+2] ;
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534 efit[iDigit] += epar * ShowerShapeV2((Float_t)iphi - xpar,(Float_t)ieta - zpar) ;
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536 } else AliError("Digit NULL!");
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540 // Now create new RecPoints and fill energy lists with efit corrected to fluctuations
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541 // so that energy deposited in each cell is distributed between new clusters proportionally
\r
542 // to its contribution to efit
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544 Float_t * energiesList = iniTower->GetEnergiesList() ;
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545 Float_t ratio = 0 ;
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548 while(iparam < nPar ){
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549 xpar = fitparameters[iparam] ;
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550 zpar = fitparameters[iparam+1] ;
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551 epar = fitparameters[iparam+2] ;
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554 AliEMCALRecPoint * recPoint = 0 ;
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556 if(fNumberOfECAClusters >= fRecPoints->GetSize())
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557 fRecPoints->Expand(2*fNumberOfECAClusters) ;
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560 (*fRecPoints)[fNumberOfECAClusters] = new AliEMCALRecPoint("") ;
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561 recPoint = dynamic_cast<AliEMCALRecPoint *>( fRecPoints->At(fNumberOfECAClusters) ) ;
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565 fNumberOfECAClusters++ ;
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566 recPoint->SetNExMax((Int_t)nPar/3) ;
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568 Float_t eDigit = 0. ;
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569 for(iDigit = 0 ; iDigit < nDigits ; iDigit ++){
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570 digit = dynamic_cast<AliEMCALDigit*>( fDigitsArr->At( digitsList[iDigit] ) ) ;
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572 fGeom->GetCellIndex(digit->GetId(),iSupMod,iTower,iIphi,iIeta);
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573 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,iTower,
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574 iIphi, iIeta,iphi,ieta);
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575 EvalParsPhiDependence(digit->GetId(),fGeom);
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576 if(efit[iDigit]==0) continue;//just for sure
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577 ratio = epar * ShowerShapeV2((Float_t)iphi - xpar,(Float_t)ieta - zpar) / efit[iDigit] ;
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578 eDigit = energiesList[iDigit] * ratio ;
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579 recPoint->AddDigit( *digit, eDigit, kFALSE ) ; //FIXME, need to study the shared case
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580 } else AliError("NULL digit");
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582 } else AliError("NULL RecPoint");
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585 delete[] fitparameters ;
\r
592 //____________________________________________________________________________
\r
593 Bool_t AliEMCALUnfolding::FindFitV2(AliEMCALRecPoint * recPoint, AliEMCALDigit ** maxAt,
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594 const Float_t* maxAtEnergy,
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595 Int_t nPar, Float_t * fitparameters) const
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597 // Calls TMinuit to fit the energy distribution of a cluster with several maxima
\r
598 // The initial values for fitting procedure are set equal to the
\r
599 // positions of local maxima.
\r
600 // Cluster will be fitted as a superposition of nPar/3
\r
601 // electromagnetic showers
\r
603 if (fGeom==0) AliFatal("Did not get geometry from EMCALLoader");
\r
606 gMinuit = new TMinuit(100) ;//max 100 parameters
\r
608 gMinuit->mncler(); // Reset Minuit's list of paramters
\r
609 gMinuit->SetPrintLevel(-1) ; // No Printout
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610 gMinuit->SetFCN(AliEMCALUnfolding::UnfoldingChiSquareV2) ;
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611 // To set the address of the minimization function
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612 TList * toMinuit = new TList();
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613 toMinuit->AddAt(recPoint,0) ;
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614 toMinuit->AddAt(fDigitsArr,1) ;
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615 toMinuit->AddAt(fGeom,2) ;
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617 gMinuit->SetObjectFit(toMinuit) ; // To tranfer pointer to UnfoldingChiSquare
\r
619 // filling initial values for fit parameters
\r
620 AliEMCALDigit * digit ;
\r
624 Int_t nDigits = (Int_t) nPar / 3 ;
\r
628 Int_t iSupMod = 0 ;
\r
632 Int_t iphi = 0 ;//x direction
\r
633 Int_t ieta = 0 ;//z direstion
\r
635 for(iDigit = 0; iDigit < nDigits; iDigit++){
\r
636 digit = maxAt[iDigit];
\r
637 if(digit==0) AliError("energy of digit = 0!");
\r
638 fGeom->GetCellIndex(digit->GetId(),iSupMod,iTower,iIphi,iIeta);
\r
639 fGeom->GetCellPhiEtaIndexInSModule(iSupMod,iTower,
\r
640 iIphi, iIeta,iphi,ieta);
\r
642 Float_t energy = maxAtEnergy[iDigit] ;
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644 //gMinuit->mnparm(index, "x", iphi, 0.1, 0, 0, ierflg) ;//original
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645 gMinuit->mnparm(index, "x", iphi, 0.05, 0, 0, ierflg) ;
\r
648 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : x = %d", iphi ) ;
\r
653 //gMinuit->mnparm(index, "z", ieta, 0.1, 0, 0, ierflg) ;//original
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654 gMinuit->mnparm(index, "z", ieta, 0.05, 0, 0, ierflg) ;
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657 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : z = %d", ieta) ;
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662 //gMinuit->mnparm(index, "Energy", energy , 0.05*energy, 0., 4.*energy, ierflg) ;//original
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663 gMinuit->mnparm(index, "Energy", energy , 0.001*energy, 0., 5.*energy, ierflg) ;//was 0.05
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666 Error("FindFit", "EMCAL Unfolding Unable to set initial value for fit procedure : energy = %f", energy) ;
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673 Double_t p0 = 0.1 ; // "Tolerance" Evaluation stops when EDM = 0.0001*p0 ;
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674 // The number of function call slightly depends on it.
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675 // Double_t p1 = 1.0 ;// par to gradient
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676 Double_t p2 = 0.0 ;
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677 // Double_t p3 = 3.0 ;
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678 gMinuit->mnexcm("SET STR", &p2, 0, ierflg) ; // force TMinuit to reduce function calls
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679 // gMinuit->mnexcm("SET GRA", &p1, 1, ierflg) ; // force TMinuit to use my gradient
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680 gMinuit->SetMaxIterations(5);//was 5
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681 gMinuit->mnexcm("SET NOW", &p2 , 0, ierflg) ; // No Warnings
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682 //gMinuit->mnexcm("SET PRI", &p3 , 3, ierflg) ; // printouts
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684 gMinuit->mnexcm("MIGRAD", &p0, 0, ierflg) ; // minimize
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685 //gMinuit->mnexcm("MINI", &p0, 0, ierflg) ; // minimize
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686 if(ierflg == 4){ // Minimum not found
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687 AliDebug(1,"EMCAL Unfolding Fit not converged, cluster abandoned " ) ;
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692 for(index = 0; index < nPar; index++){
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693 Double_t err = 0. ;
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694 Double_t val = 0. ;
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695 gMinuit->GetParameter(index, val, err) ; // Returns value and error of parameter index
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696 fitparameters[index] = val ;
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705 //____________________________________________________________________________
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706 Double_t AliEMCALUnfolding::ShowerShapeV2(Double_t x, Double_t y)
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708 // extended to whole EMCAL
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709 // Shape of the shower
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710 // If you change this function, change also the gradient evaluation in ChiSquare()
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712 Double_t r = fgSSPars[7]*TMath::Sqrt(x*x+y*y);
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713 Double_t rp1 = TMath::Power(r, fgSSPars[1]) ;
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714 Double_t rp5 = TMath::Power(r, fgSSPars[5]) ;
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715 Double_t shape = fgSSPars[0]*TMath::Exp( -rp1 * (1. / (fgSSPars[2] + fgSSPars[3] * rp1) + fgSSPars[4] / (1 + fgSSPars[6] * rp5) ) ) ;
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719 //____________________________________________________________________________
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720 void AliEMCALUnfolding::UnfoldingChiSquareV2(Int_t & nPar, Double_t * Grad,
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722 Double_t * x, Int_t iflag)
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724 // Calculates the Chi square for the cluster unfolding minimization
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725 // Number of parameters, Gradient, Chi squared, parameters, what to do
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727 TList * toMinuit = dynamic_cast<TList*>( gMinuit->GetObjectFit() ) ;
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729 AliEMCALRecPoint * recPoint = dynamic_cast<AliEMCALRecPoint*>( toMinuit->At(0) ) ;
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730 TClonesArray * digits = dynamic_cast<TClonesArray*>( toMinuit->At(1) ) ;
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731 // A bit buggy way to get an access to the geometry
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733 AliEMCALGeometry *geom = dynamic_cast<AliEMCALGeometry *>(toMinuit->At(2));
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735 if(recPoint && digits && geom){
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737 Int_t * digitsList = recPoint->GetDigitsList() ;
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739 Int_t nOdigits = recPoint->GetDigitsMultiplicity() ;
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741 Float_t * energiesList = recPoint->GetEnergiesList() ;
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747 for(iparam = 0 ; iparam < nPar ; iparam++)
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748 Grad[iparam] = 0 ; // Will evaluate gradient
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750 Double_t efit = 0. ;
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752 AliEMCALDigit * digit ;
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755 Int_t iSupMod = 0 ;
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759 Int_t iphi = 0 ;//x direction
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760 Int_t ieta = 0 ;//z direstion
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763 for( iDigit = 0 ; iDigit < nOdigits ; iDigit++) {
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764 if(energiesList[iDigit]==0) continue;
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766 digit = dynamic_cast<AliEMCALDigit*>( digits->At( digitsList[iDigit] ) );
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769 geom->GetCellIndex(digit->GetId(),iSupMod,iTower,iIphi,iIeta);
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770 geom->GetCellPhiEtaIndexInSModule(iSupMod,iTower,
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771 iIphi, iIeta,iphi,ieta);
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772 EvalParsPhiDependence(digit->GetId(),geom);
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774 if(iflag == 2){ // calculate gradient
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777 while(iParam < nPar ){
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778 Double_t dx = ((Float_t)iphi - x[iParam]) ;
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780 Double_t dz = ((Float_t)ieta - x[iParam]) ;
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782 efit += x[iParam] * ShowerShapeV2(dx,dz) ;
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786 Double_t sum = 2. * (efit - energiesList[iDigit]) / energiesList[iDigit] ; // Here we assume, that sigma = sqrt(E)
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788 while(iParam < nPar ){
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789 Double_t xpar = x[iParam] ;
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790 Double_t zpar = x[iParam+1] ;
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791 Double_t epar = x[iParam+2] ;
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793 Double_t dr = fgSSPars[7]*TMath::Sqrt( ((Float_t)iphi - xpar) * ((Float_t)iphi - xpar) + ((Float_t)ieta - zpar) * ((Float_t)ieta - zpar) );
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794 Double_t shape = sum * ShowerShapeV2((Float_t)iphi - xpar,(Float_t)ieta - zpar) ;
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795 Double_t rp1 = TMath::Power(dr, fgSSPars[1]) ;
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796 Double_t rp5 = TMath::Power(dr, fgSSPars[5]) ;
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798 Double_t deriv = -2 * TMath::Power(dr,fgSSPars[1]-2.) * fgSSPars[7] * fgSSPars[7] *
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799 (fgSSPars[1] * ( 1/(fgSSPars[2]+fgSSPars[3]*rp1) + fgSSPars[4]/(1+fgSSPars[6]*rp5) ) -
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800 (fgSSPars[1]*fgSSPars[3]*rp1/( (fgSSPars[2]+fgSSPars[3]*rp1)*(fgSSPars[2]+fgSSPars[3]*rp1) ) +
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801 fgSSPars[4]*fgSSPars[5]*fgSSPars[6]*rp5/( (1+fgSSPars[6]*rp5)*(1+fgSSPars[6]*rp5) ) ) );
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803 //Double_t deriv =-1.33 * TMath::Power(dr,0.33)*dr * ( 1.57 / ( (1.57 + 0.0860 * r133) * (1.57 + 0.0860 * r133) )
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804 // - 0.55 / (1 + 0.000563 * r669) / ( (1 + 0.000563 * r669) * (1 + 0.000563 * r669) ) ) ;
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806 Grad[iParam] += epar * shape * deriv * ((Float_t)iphi - xpar) ; // Derivative over x
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808 Grad[iParam] += epar * shape * deriv * ((Float_t)ieta - zpar) ; // Derivative over z
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810 Grad[iParam] += shape ; // Derivative over energy
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817 while(iparam < nPar ){
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818 Double_t xpar = x[iparam] ;
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819 Double_t zpar = x[iparam+1] ;
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820 Double_t epar = x[iparam+2] ;
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822 efit += epar * ShowerShapeV2((Float_t)iphi - xpar,(Float_t)ieta - zpar) ;
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825 fret += (efit-energiesList[iDigit])*(efit-energiesList[iDigit])/energiesList[iDigit] ;
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826 // Here we assume, that sigma = sqrt(E)
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827 } else printf("AliEMCALUnfoding::UnfoldingChiSquareV2 - NULL digit!, nPar %d \n", nPar); // put nPar here to cheat coverity and rule checker
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829 } // recpoint, digits and geom not NULL
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830 }// List is not NULL
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835 //____________________________________________________________________________
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836 void AliEMCALUnfolding::SetShowerShapeParams(Double_t *pars){
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837 for(UInt_t i=0;i<7;++i)
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838 fgSSPars[i]=pars[i];
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839 if(pars[2]==0. && pars[3]==0.) fgSSPars[2]=1.;//to avoid dividing by 0
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842 //____________________________________________________________________________
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843 void AliEMCALUnfolding::SetPar5(Double_t *pars){
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844 for(UInt_t i=0;i<3;++i)
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848 //____________________________________________________________________________
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849 void AliEMCALUnfolding::SetPar6(Double_t *pars){
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850 for(UInt_t i=0;i<3;++i)
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854 //____________________________________________________________________________
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855 void AliEMCALUnfolding::EvalPar5(Double_t phi){
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857 //Evaluate the 5th parameter of the shower shape function
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858 //phi in degrees range (-10,10)
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860 //fSSPars[5] = 12.31 - phi*0.007381 - phi*phi*0.06936;
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861 fgSSPars[5] = fgPar5[0] + phi * fgPar5[1] + phi*phi * fgPar5[2];
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864 //____________________________________________________________________________
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865 void AliEMCALUnfolding::EvalPar6(Double_t phi){
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867 //Evaluate the 6th parameter of the shower shape function
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868 //phi in degrees range (-10,10)
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870 //fSSPars[6] = 0.05452 + phi*0.0001228 + phi*phi*0.001361;
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871 fgSSPars[6] = fgPar6[0] + phi * fgPar6[1] + phi*phi * fgPar6[2];
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874 //____________________________________________________________________________
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875 void AliEMCALUnfolding::EvalParsPhiDependence(Int_t absId, const AliEMCALGeometry *geom){
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877 // calculate params p5 and p6 depending on the phi angle in global coordinate
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878 // for the cell with given absId index
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880 Double_t etaGlob = 0.;//eta in global c.s. - unused
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881 Double_t phiGlob = 0.;//phi in global c.s. in radians
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882 geom->EtaPhiFromIndex(absId, etaGlob, phiGlob);
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883 phiGlob*=180./TMath::Pi();
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885 phiGlob-= (Double_t)((Int_t)geom->GetSuperModuleNumber(absId)/2 * 20);
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