T0/AliT0Reconstructor.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 #include <Riostream.h>
  19
  20 #include <TDirectory.h>
  21
  22 #include "AliRunLoader.h"
  23 #include <AliESDEvent.h>
  24 #include "AliLog.h"
  25 #include "AliT0Loader.h"
  26 #include "AliT0RecPoint.h"
  27 #include "AliRawReader.h"
  28 #include "AliT0RawReader.h"
  29 #include "AliT0digit.h"
  30 #include "AliT0Reconstructor.h"
  31 #include "AliT0Parameters.h"
  32 #include "AliT0Calibrator.h"
  33 #include "AliCDBLocal.h"
  34 #include "AliCDBStorage.h"
  35 #include "AliCDBManager.h"
  36 #include "AliCDBEntry.h"
  37
  38 #include <TArrayI.h>
  39 #include <TGraph.h>
  40 #include <TMath.h>
  41
  42 ClassImp(AliT0Reconstructor)
  43
  44   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  45                                              fdZonA(0),
  46                                              fdZonC(0),
  47                                              fZposition(0),
  48                                              fParam(NULL),
  49                                              fAmpLEDrec()
  50 {
  51  AliDebug(1,"Start reconstructor ");
  52
  53   fParam = AliT0Parameters::Instance();
  54   fParam->Init();
  55   for (Int_t i=0; i<24; i++){
  56     TGraph* gr = fParam ->GetAmpLEDRec(i);
  57     fAmpLEDrec.AddAtAndExpand(gr,i) ;
  58 //    fTime0vertex[i]= fParam->GetTimeV0(i);
  59   }
  60   fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  61   fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  62
  63 }
  64 //____________________________________________________________________
  65
  66 AliT0Reconstructor::AliT0Reconstructor(const AliT0Reconstructor &r):
  67   AliReconstructor(r),
  68                                              fdZonA(0),
  69                                              fdZonC(0),
  70                                              fZposition(0),
  71                                              fParam(NULL),
  72                                              fAmpLEDrec()
  73  {
  74   //
  75   // AliT0Reconstructor copy constructor
  76   //
  77
  78   ((AliT0Reconstructor &) r).Copy(*this);
  79
  80 }
  81
  82 //_____________________________________________________________________________
  83 AliT0Reconstructor &AliT0Reconstructor::operator=(const AliT0Reconstructor &r)
  84 {
  85   //
  86   // Assignment operator
  87   //
  88
  89   if (this != &r) ((AliT0Reconstructor &) r).Copy(*this);
  90   return *this;
  91
  92 }
  93
  94 //_____________________________________________________________________________
  95
  96 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  97
  98 {
  99   // T0 digits reconstruction
 100   // T0RecPoint writing
 101
 102
 103   TArrayI * timeCFD = new TArrayI(24);
 104   TArrayI * timeLED = new TArrayI(24);
 105   TArrayI * chargeQT0 = new TArrayI(24);
 106   TArrayI * chargeQT1 = new TArrayI(24);
 107
 108   AliT0Calibrator *calib=new AliT0Calibrator();
 109
 110   //  Int_t mV2Mip = param->GetmV2Mip();
 111   //mV2Mip = param->GetmV2Mip();
 112   Float_t channelWidth = fParam->GetChannelWidth() ;
 113   Int_t meanT0 = fParam->GetMeanT0();
 114
 115   AliDebug(1,Form("Start DIGITS reconstruction "));
 116
 117   TBranch *brDigits=digitsTree->GetBranch("T0");
 118   AliT0digit *fDigits = new AliT0digit() ;
 119   if (brDigits) {
 120     brDigits->SetAddress(&fDigits);
 121   }else{
 122     AliError(Form("EXEC Branch T0 digits not found"));
 123      return;
 124   }
 125
 126   digitsTree->GetEvent(0);
 127   digitsTree->GetEntry(0);
 128   brDigits->GetEntry(0);
 129   fDigits->GetTimeCFD(*timeCFD);
 130   fDigits->GetTimeLED(*timeLED);
 131   fDigits->GetQT0(*chargeQT0);
 132   fDigits->GetQT1(*chargeQT1);
 133
 134   cout<<"!!!! AliT0Reconstructor::Reconstruct RefPoint "<<fDigits->RefPoint()<<endl;
 135
 136   Float_t besttimeA=999999;
 137   Float_t besttimeC=999999;
 138   Int_t pmtBestA=99999;
 139   Int_t pmtBestC=99999;
 140   Float_t timeDiff=999999, meanTime=0;
 141
 142
 143
 144   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 145   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 146
 147   Float_t time[24], adc[24];
 148   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 149     if(timeCFD->At(ipmt)>0 ){
 150       Double_t qt0 = Double_t(chargeQT0->At(ipmt));
 151       Double_t qt1 = Double_t(chargeQT1->At(ipmt));
 152       if((qt1-qt0)>0)  adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
 153       time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD->At(ipmt) ) ;
 154
 155       //LED
 156       Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
 157       Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
 158       frecpoints->SetTime(ipmt,time[ipmt]);
 159       frecpoints->SetAmp(ipmt,adc[ipmt]);
 160       frecpoints->SetAmpLED(ipmt,qt);
 161     }
 162     else {
 163       time[ipmt] = 0;
 164       adc[ipmt] = 0;
 165     }
 166   }
 167
 168   for (Int_t ipmt=0; ipmt<12; ipmt++){
 169     if(time[ipmt] > 1 ) {
 170       if(time[ipmt]<besttimeC){
 171         besttimeC=time[ipmt]; //timeC
 172         pmtBestC=ipmt;
 173       }
 174     }
 175   }
 176   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 177     if(time[ipmt] > 1) {
 178       if(time[ipmt]<besttimeA) {
 179         besttimeA=time[ipmt]; //timeA
 180         pmtBestA=ipmt;}
 181     }
 182   }
 183   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 184   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 185   AliDebug(1,Form(" besttimeA %f ps,  besttimeC %f ps",besttimeA, besttimeC));
 186   Float_t c = 0.0299792; // cm/ps
 187   Float_t vertex = 0;
 188   if(besttimeA !=999999 && besttimeC != 999999 ){
 189     timeDiff =(besttimeC - besttimeA)*channelWidth;
 190     meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
 191     vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2; //-(lenr-lenl))/2;
 192     AliDebug(1,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
 193     frecpoints->SetVertex(vertex);
 194     frecpoints->SetMeanTime(Int_t(meanTime));
 195
 196   }
 197   //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
 198   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 199     if(time[ipmt]>1) {
 200 //      time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
 201       time[ipmt] = time[ipmt] * channelWidth;
 202       frecpoints->SetTime(ipmt,time[ipmt]);
 203     }
 204   }
 205   clustersTree->Fill();
 206
 207   delete timeCFD;
 208   delete timeLED;
 209   delete chargeQT0;
 210   delete chargeQT1;
 211 }
 212
 213
 214 //_______________________________________________________________________
 215
 216 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 217 {
 218   // T0 raw ->
 219   // T0RecPoint writing
 220
 221   //Q->T-> coefficients !!!! should be measured!!!
 222   Int_t allData[110][5];
 223
 224   TArrayI * timeCFD = new TArrayI(24);
 225   TArrayI * timeLED = new TArrayI(24);
 226   TArrayI * chargeQT0 = new TArrayI(24);
 227   TArrayI * chargeQT1 = new TArrayI(24);
 228
 229    for (Int_t i=0; i<110; i++) {
 230      allData[i][0]=0;
 231    }
 232
 233    AliT0RawReader myrawreader(rawReader);
 234    if (!myrawreader.Next())
 235      AliDebug(1,Form(" no raw data found!! %i", myrawreader.Next()));
 236    for (Int_t i=0; i<110; i++) {
 237      allData[i][0]=myrawreader.GetData(i,0);
 238    }
 239   AliT0Calibrator *calib = new AliT0Calibrator();
 240
 241   //  Int_t mV2Mip = param->GetmV2Mip();
 242   //mV2Mip = param->GetmV2Mip();
 243   Float_t channelWidth = fParam->GetChannelWidth() ;
 244
 245   Int_t meanT0 = fParam->GetMeanT0();
 246
 247   for (Int_t in=0; in<24; in++)
 248      {
 249        timeLED->AddAt(allData[in+1][0],in);
 250        timeCFD->AddAt(allData[in+25][0],in);
 251        chargeQT1->AddAt(allData[in+57][0],in);
 252        chargeQT0->AddAt(allData[in+80][0],in);
 253        AliDebug(10, Form(" readed Raw %i %i %i %i %i", in, timeLED->At(in),timeCFD->At(in),chargeQT0->At(in),chargeQT1->At(in)));
 254      }
 255
 256   Float_t besttimeA=999999;
 257   Float_t besttimeC=999999;
 258   Int_t pmtBestA=99999;
 259   Int_t pmtBestC=99999;
 260   Float_t timeDiff=999999, meanTime=0;
 261
 262
 263   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 264
 265   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 266
 267
 268   Float_t time[24], adc[24];
 269   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 270     if(timeCFD->At(ipmt)>0 ){
 271       Double_t qt0 = Double_t(chargeQT0->At(ipmt));
 272       Double_t qt1 = Double_t(chargeQT1->At(ipmt));
 273       if((qt1-qt0)>0)  adc[ipmt] = TMath::Exp( Double_t (channelWidth*(qt1-qt0)/1000));
 274       //      time[ipmt] = channelWidth * (calib-> WalkCorrection( ipmt,qt1 , timeCFD->At(ipmt) ) ) ;
 275       time[ipmt] = calib-> WalkCorrection( ipmt,Int_t(qt1) , timeCFD->At(ipmt) ) ;
 276       Double_t sl = (timeLED->At(ipmt) - time[ipmt])*channelWidth;
 277       Double_t qt=((TGraph*)fAmpLEDrec.At(ipmt))->Eval(sl/1000.);
 278       frecpoints->SetTime(ipmt,time[ipmt]);
 279       frecpoints->SetAmp(ipmt,adc[ipmt]);
 280       frecpoints->SetAmpLED(ipmt,qt);
 281     AliDebug(1,Form(" QTC %f mv,  QTC  %f MIPS time in chann %f time %f ",adc[ipmt], adc[ipmt]/50.,time[ipmt], time[ipmt]*channelWidth));
 282
 283     }
 284     else {
 285       time[ipmt] = 0;
 286       adc[ipmt] = 0;
 287     }
 288   }
 289
 290   for (Int_t ipmt=0; ipmt<12; ipmt++){
 291     if(time[ipmt] > 1 ) {
 292       if(time[ipmt]<besttimeC){
 293         besttimeC=time[ipmt]; //timeC
 294         pmtBestC=ipmt;
 295       }
 296     }
 297   }
 298   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 299     if(time[ipmt] > 1) {
 300       if(time[ipmt]<besttimeA) {
 301         besttimeA=time[ipmt]; //timeA
 302         pmtBestA=ipmt;}
 303     }
 304   }
 305   if(besttimeA !=999999)  frecpoints->SetTimeBestA(Int_t(besttimeA));
 306   if( besttimeC != 999999 ) frecpoints->SetTimeBestC(Int_t(besttimeC));
 307   AliDebug(1,Form(" besttimeA %f ps,  besttimeC %f ps",besttimeA, besttimeC));
 308   Float_t c = 0.0299792; // cm/ps
 309   Float_t vertex = 0;
 310   if(besttimeA !=999999 && besttimeC != 999999 ){
 311     timeDiff = (besttimeC - besttimeA)*channelWidth;
 312     meanTime = (meanT0 - (besttimeA + besttimeC)/2) * channelWidth;
 313     vertex = c*(timeDiff)/2. + (fdZonA - fdZonC)/2; //-(lenr-lenl))/2;
 314     AliDebug(1,Form("  timeDiff %f ps,  meanTime %f ps, vertex %f cm",timeDiff, meanTime,vertex ));
 315     frecpoints->SetVertex(vertex);
 316     frecpoints->SetMeanTime(Int_t(meanTime));
 317
 318   }
 319   //time in each channel as time[ipmt]-MeanTimeinThisChannel(with vertex=0)
 320   /*
 321   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 322     if(time[ipmt]>1) {
 323       time[ipmt] = (time[ipmt] - fTime0vertex[ipmt])*channelWidth;
 324       frecpoints->SetTime(ipmt,time[ipmt]);
 325     }
 326     }
 327   */
 328   recTree->Fill();
 329
 330
 331   delete timeCFD;
 332   delete timeLED;
 333   delete chargeQT0;
 334   delete chargeQT1;
 335
 336 }
 337 //____________________________________________________________
 338
 339 void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 340 {
 341
 342   /***************************************************
 343   Resonstruct digits to vertex position
 344   ****************************************************/
 345
 346   AliDebug(1,Form("Start FillESD T0"));
 347
 348   TTree *treeR = clustersTree;
 349
 350    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 351     if (!frecpoints) {
 352     AliError("Reconstruct Fill ESD >> no recpoints found");
 353     return;
 354   }
 355
 356   AliDebug(1,Form("Start FillESD T0"));
 357   TBranch *brRec = treeR->GetBranch("T0");
 358   if (brRec) {
 359     brRec->SetAddress(&frecpoints);
 360   }else{
 361     AliError(Form("EXEC Branch T0 rec not found"));
 362     return;
 363   }
 364
 365     brRec->GetEntry(0);
 366     Float_t amp[24], time[24];
 367     Float_t  zPosition = frecpoints -> GetVertex();
 368     Float_t timeStart = frecpoints -> GetMeanTime() ;
 369     for ( Int_t i=0; i<24; i++) {
 370       time[i] = Float_t (frecpoints -> GetTime(i)); // ps to ns
 371       amp[i] = frecpoints -> GetAmp(i);
 372     }
 373     pESD->SetT0zVertex(zPosition); //vertex Z position
 374     pESD->SetT0(timeStart);        // interaction time
 375     pESD->SetT0time(time);         // best TOF on each PMT
 376     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 377
 378     AliDebug(1,Form(" Z position %f cm,  T0  %f ps",zPosition , timeStart));
 379
 380 } // vertex in 3 sigma
 381
 382
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 386