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  *  T0 reconstruction and filling ESD
  19  *  - reconstruct mean time (interation time)
  20  *  - vertex position
  21  *  -  multiplicity
  22  ********************************************************************/
  23
  24 #include <AliESDEvent.h>
  25 #include "AliLog.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
  34 #include <TArrayI.h>
  35 #include <TGraph.h>
  36 #include <TMath.h>
  37 #include <Riostream.h>
  38
  39 ClassImp(AliT0Reconstructor)
  40
  41   AliT0Reconstructor:: AliT0Reconstructor(): AliReconstructor(),
  42                                              fdZonA(0),
  43                                              fdZonC(0),
  44                                              fZposition(0),
  45                                              fParam(NULL),
  46                                              fAmpLEDrec(),
  47                                              fQTC(0),
  48                                              fAmpLED(0),
  49                                              fCalib()
  50 {
  51   //constructor
  52
  53   fParam = AliT0Parameters::Instance();
  54   fParam->Init();
  55
  56   for (Int_t i=0; i<24; i++){
  57         TGraph* gr = fParam ->GetAmpLEDRec(i);
  58         if (gr) fAmpLEDrec.AddAtAndExpand(gr,i) ;
  59           TGraph* gr1 = fParam ->GetAmpLED(i);
  60           if (gr1) fAmpLED.AddAtAndExpand(gr1,i) ;
  61           TGraph* gr2 = fParam ->GetQTC(i);
  62           if (gr2) fQTC.AddAtAndExpand(gr2,i) ;
  63   }
  64
  65
  66   // fdZonC = TMath::Abs(fParam->GetZPositionShift("T0/C/PMT1"));
  67   //fdZonA = TMath::Abs(fParam->GetZPositionShift("T0/A/PMT15"));
  68
  69
  70   fCalib = new AliT0Calibrator();
  71
  72 }
  73
  74 //_____________________________________________________________________________
  75 void AliT0Reconstructor::Reconstruct(TTree*digitsTree, TTree*clustersTree) const
  76
  77 {
  78   // T0 digits reconstruction
  79   Int_t refAmp = GetRecoParam()->GetRefAmp();
  80
  81   TArrayI * timeCFD = new TArrayI(24);
  82   TArrayI * timeLED = new TArrayI(24);
  83   TArrayI * chargeQT0 = new TArrayI(24);
  84   TArrayI * chargeQT1 = new TArrayI(24);
  85
  86
  87   Float_t channelWidth = fParam->GetChannelWidth() ;
  88   Float_t meanVertex = fParam->GetMeanVertex();
  89   Float_t c = 0.0299792; // cm/ps
  90   Double32_t vertex = 9999999;
  91   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
  92
  93
  94   AliDebug(1,Form("Start DIGITS reconstruction "));
  95
  96
  97   TBranch *brDigits=digitsTree->GetBranch("T0");
  98   AliT0digit *fDigits = new AliT0digit() ;
  99   if (brDigits) {
 100     brDigits->SetAddress(&fDigits);
 101   }else{
 102     AliError(Form("EXEC Branch T0 digits not found"));
 103      return;
 104   }
 105
 106   digitsTree->GetEvent(0);
 107   digitsTree->GetEntry(0);
 108   brDigits->GetEntry(0);
 109   fDigits->GetTimeCFD(*timeCFD);
 110   fDigits->GetTimeLED(*timeLED);
 111   fDigits->GetQT0(*chargeQT0);
 112   fDigits->GetQT1(*chargeQT1);
 113   Int_t onlineMean =  fDigits->MeanTime();
 114
 115   Bool_t tr[5];
 116   for (Int_t i=0; i<5; i++) tr[i]=false;
 117
 118   Double32_t besttimeA=999999;
 119   Double32_t besttimeC=999999;
 120   Int_t pmtBestA=99999;
 121   Int_t pmtBestC=99999;
 122
 123   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 124   clustersTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 125
 126   Float_t time[24], adc[24];
 127   for (Int_t ipmt=0; ipmt<24; ipmt++) {
 128     if(timeCFD->At(ipmt)>0 ){
 129      if(( chargeQT1->At(ipmt) - chargeQT0->At(ipmt))>0)
 130         adc[ipmt] = chargeQT1->At(ipmt) - chargeQT0->At(ipmt);
 131       else
 132         adc[ipmt] = 0;
 133
 134      // time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt],  timeCFD->At(ipmt)) ;
 135
 136       Double_t sl = Double_t(timeLED->At(ipmt) - timeCFD->At(ipmt));
 137       time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl),  timeCFD->At(ipmt) ) ;
 138       AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 139                        ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 140
 141       Double_t ampMip =((TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 142       Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 143       AliDebug(10,Form("  Amlitude in MIPS LED %f ,  QTC %f in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 144
 145       frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 146       frecpoints->SetAmp(ipmt, Float_t( ampMip)); //for cosmic &pp beam
 147       frecpoints->SetAmpLED(ipmt, Float_t(qtMip));
 148
 149     }
 150     else {
 151       time[ipmt] = 0;
 152       adc[ipmt] = 0;
 153     }
 154   }
 155
 156   for (Int_t ipmt=0; ipmt<12; ipmt++){
 157     if(time[ipmt] > 1 ) {
 158       if(time[ipmt]<besttimeC){
 159         besttimeC=time[ipmt]; //timeC
 160         pmtBestC=ipmt;
 161       }
 162     }
 163   }
 164   for ( Int_t ipmt=12; ipmt<24; ipmt++){
 165     if(time[ipmt] > 1) {
 166       if(time[ipmt]<besttimeA) {
 167         besttimeA=time[ipmt]; //timeA
 168         pmtBestA=ipmt;}
 169     }
 170   }
 171   if(besttimeA < 999999) {
 172     frecpoints->SetTimeBestA(Int_t(besttimeA *channelWidth));
 173     tr[1]=true;
 174   }
 175   if( besttimeC < 999999 ) {
 176     frecpoints->SetTimeBestC(Int_t(besttimeC *channelWidth));
 177     tr[2]=true;
 178   }
 179   AliDebug(10,Form(" besttimeA %f ch,  besttimeC %f ch",besttimeA, besttimeC));
 180   if(besttimeA <999999 && besttimeC < 999999 ){
 181     //    timeDiff = (besttimeC - besttimeA)*channelWidth;
 182     timeDiff = (besttimeA - besttimeC)*channelWidth;
 183     meanTime = (besttimeA + besttimeC)/2;// * channelWidth);
 184     timeclock = meanTime *channelWidth ;
 185     vertex = meanVertex - c*(timeDiff)/2.;// + (fdZonA - fdZonC)/2;
 186     tr[0]=true;
 187   }
 188   frecpoints->SetVertex(vertex);
 189   frecpoints->SetMeanTime(meanTime);
 190   frecpoints->SetT0clock(timeclock);
 191   frecpoints->SetT0Trig(tr);
 192
 193   for (Int_t i=0; i<5; i++) {
 194     printf(" T0 trigers %i ",tr[i]);
 195   }
 196     printf(" \n ");
 197
 198   //online mean
 199   frecpoints->SetOnlineMean(Int_t(onlineMean));
 200   AliDebug(10,Form("  timeDiff %i #channel,  meanTime %i #channel, vertex %f cm online mean %i timeclock %i ps",timeDiff, meanTime,vertex, Int_t(onlineMean), timeclock));
 201
 202
 203
 204
 205
 206   clustersTree->Fill();
 207
 208   delete timeCFD;
 209   delete timeLED;
 210   delete chargeQT0;
 211   delete chargeQT1;
 212 }
 213
 214
 215 //_______________________________________________________________________
 216
 217 void AliT0Reconstructor::Reconstruct(AliRawReader* rawReader, TTree*recTree) const
 218 {
 219   // T0 raw ->
 220   //
 221   // reference amplitude and time ref. point from reco param
 222
 223   Int_t refAmp = GetRecoParam()->GetRefAmp();
 224   Int_t refPoint = GetRecoParam()->GetRefPoint();
 225   Float_t latencyL1 = GetRecoParam()->GetLatencyL1();
 226   Float_t latencyL1A = GetRecoParam()->GetLatencyL1A();
 227   Float_t latencyL1C = GetRecoParam()->GetLatencyL1C();
 228   Float_t latencyHPTDC = GetRecoParam()->GetLatencyHPTDC();
 229   Float_t vertexshift = GetRecoParam()->GetVertexShift();
 230   AliDebug(10,Form(" LatencyL1 %f latencyL1A %f latencyL1C %f latencyHPTDC %f \n",latencyL1,latencyL1A,latencyL1C, latencyHPTDC));
 231   Int_t allData[110][5];
 232
 233   Int_t timeCFD[24], timeLED[24], chargeQT0[24], chargeQT1[24];
 234   Double32_t timeDiff=999999, meanTime=999999, timeclock=999999;
 235   Float_t c = 29.9792458; // cm/ns
 236   Double32_t vertex = 9999999;
 237   Int_t onlineMean=0;
 238
 239   for (Int_t i0=0; i0<105; i0++)
 240     {
 241       for (Int_t j0=0; j0<5; j0++) allData[i0][j0]=0;
 242     }
 243
 244   Double32_t besttimeA=9999999;
 245   Double32_t besttimeC=9999999;
 246   Int_t pmtBestA=99999;
 247   Int_t pmtBestC=99999;
 248   // Float_t meanVertex = fParam->GetMeanVertex();
 249   Float_t meanVertex = 0;
 250
 251   AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 252
 253   recTree->Branch( "T0", "AliT0RecPoint" ,&frecpoints, 405,1);
 254
 255   AliDebug(10," before read data ");
 256   AliT0RawReader myrawreader(rawReader);
 257
 258   UInt_t type =rawReader->GetType();
 259
 260   if (!myrawreader.Next())
 261     AliDebug(1,Form(" no raw data found!!"));
 262   else
 263     {
 264       if(type == 7) {  //only physics
 265       for (Int_t i=0; i<105; i++) {
 266         for (Int_t iHit=0; iHit<5; iHit++)
 267           {
 268             allData[i][iHit] = myrawreader.GetData(i,iHit);
 269           }
 270       }
 271       Int_t ref=0;
 272       if (refPoint>0)
 273       ref = allData[refPoint][0]-5000;
 274
 275       Float_t channelWidth = fParam->GetChannelWidth() ;
 276
 277       //       Int_t meanT0 = fParam->GetMeanT0();
 278
 279
 280           for (Int_t in=0; in<12; in++)
 281             {
 282               timeCFD[in] = allData[in+1][0] ;
 283               timeCFD[in+12] = allData[in+56+1][0] ;
 284               timeLED[in] = allData[in+12+1][0] ;
 285               timeLED[in+12] = allData[in+68+1][0] ;
 286               AliDebug(10, Form(" readed i %i cfdC %i cfdA %i ledC %i ledA%i ",
 287                                 in, timeCFD[in],timeCFD[in+12],timeLED[in],
 288                                 timeLED[in+12]));
 289             }
 290
 291           for (Int_t in=0; in<12;  in++)
 292             {
 293               chargeQT0[in]=allData[2*in+25][0];
 294               chargeQT1[in]=allData[2*in+26][0];
 295             }
 296
 297            for (Int_t in=12; in<24;  in++)
 298              {
 299                chargeQT0[in]=allData[2*in+57][0];
 300                chargeQT1[in]=allData[2*in+58][0];
 301              }
 302
 303            //    } //cosmic with physics event
 304        for (Int_t in=0; in<24; in++)
 305          AliDebug(10, Form(" readed Raw %i %i %i %i %i",
 306                            in, timeLED[in],timeCFD[in],chargeQT0[in],chargeQT1[in]));
 307         onlineMean = allData[49][0];
 308
 309        Double32_t time[24], adc[24];
 310        for (Int_t ipmt=0; ipmt<24; ipmt++) {
 311          if(timeCFD[ipmt]>0 && timeLED[ipmt]>0){
 312            //for simulated data
 313              //for physics  data
 314            if(( chargeQT1[ipmt] - chargeQT0[ipmt])>0)
 315              adc[ipmt] = chargeQT0[ipmt] - chargeQT1[ipmt];
 316            else
 317              adc[ipmt] = 0;
 318
 319
 320            //      time[ipmt] = fCalib-> WalkCorrection(refAmp, ipmt, adc[ipmt], timeCFD[ipmt] ) ;
 321
 322            Double_t sl = timeLED[ipmt] - timeCFD[ipmt];
 323            time[ipmt] = fCalib-> WalkCorrection( refAmp,ipmt, Int_t(sl), timeCFD[ipmt] ) ;
 324            AliDebug(10,Form(" ipmt %i QTC %i , time in chann %i (led-cfd) %i ",
 325                             ipmt, Int_t(adc[ipmt]) ,Int_t(time[ipmt]),Int_t( sl)));
 326            Double_t ampMip =( (TGraph*)fAmpLED.At(ipmt))->Eval(sl);
 327            Double_t qtMip = ((TGraph*)fQTC.At(ipmt))->Eval(adc[ipmt]);
 328            AliDebug(10,Form("  Amlitude in MIPS LED %f ; QTC %f;  in channels %i\n ",ampMip,qtMip, adc[ipmt]));
 329
 330            //      frecpoints->SetTime(ipmt, Float_t(time[ipmt]) );
 331            frecpoints->SetTime(ipmt,Double32_t(timeCFD[ipmt]));
 332            frecpoints->SetAmpLED(ipmt, Double32_t( qtMip)); //for cosmic &pp beam
 333            frecpoints->SetAmp(ipmt, Double32_t(ampMip));
 334
 335          }
 336          else {
 337            time[ipmt] = 0;
 338            adc[ipmt] = 0;
 339          }
 340        }
 341
 342        for (Int_t ipmt=0; ipmt<12; ipmt++){
 343          if(time[ipmt] > 1 ) {
 344            if(time[ipmt]<besttimeC){
 345              besttimeC=time[ipmt]; //timeC
 346              pmtBestC=ipmt;
 347            }
 348          }
 349        }
 350        for ( Int_t ipmt=12; ipmt<24; ipmt++){
 351          if(time[ipmt] > 1) {
 352            if(time[ipmt]<besttimeA) {
 353              besttimeA=time[ipmt]; //timeA
 354              pmtBestA=ipmt;}
 355          }
 356        }
 357        if(besttimeA < 999999)
 358          frecpoints->SetTimeBestA(0.001* besttimeA * channelWidth - latencyHPTDC + latencyL1A);
 359        if( besttimeC < 999999 )
 360          frecpoints->SetTimeBestC( 0.001 *besttimeC * channelWidth - latencyHPTDC + latencyL1C);
 361        AliDebug(10,Form(" pmtA %i besttimeA %f ps, pmtC %i besttimeC %f ps",
 362                        pmtBestA,besttimeA, pmtBestC,  besttimeC));
 363         if(besttimeA <999999 && besttimeC < 999999 ){
 364          timeDiff = ( besttimeA - besttimeC) *0.001 * channelWidth;
 365          timeclock = 0.001*channelWidth * Float_t( besttimeA+besttimeC)/2. - latencyHPTDC + latencyL1;
 366          meanTime = (besttimeA+besttimeC-2.*Float_t(ref))/2.;
 367          vertex =  meanVertex -  c*(timeDiff)/2. + vertexshift; //+ (fdZonA - fdZonC)/2;
 368         }
 369       }  //if phys event
 370       AliDebug(5,Form("  timeDiff %f #channel,  meanTime %f #channel, TOFmean%f  vertex %f cm meanVertex %f online mean %i \n",timeDiff, meanTime,timeclock, vertex,meanVertex, onlineMean));
 371       frecpoints->SetT0clock(timeclock);
 372       frecpoints->SetVertex(vertex);
 373       frecpoints->SetMeanTime(meanTime);
 374       frecpoints->SetOnlineMean(Int_t(onlineMean));
 375         // Set triggers
 376
 377       Bool_t tr[5];
 378       Int_t trchan[5]= {50,51,52,55,56};
 379       for (Int_t i=0; i<5; i++) tr[i]=false;
 380       for (Int_t itr=0; itr<5; itr++) {
 381         if(allData[trchan[itr]][0]>0) tr[itr]=true;
 382         frecpoints->SetT0Trig(tr);
 383       }
 384       for (Int_t i=0; i<5; i++)
 385         printf(" T0 trigers %i ",tr[i]);
 386       printf(" \n ");
 387
 388
 389       } // if (else )raw data
 390       recTree->Fill();
 391       if(frecpoints) delete frecpoints;
 392     }
 393
 394
 395   //____________________________________________________________
 396
 397   void AliT0Reconstructor::FillESD(TTree */*digitsTree*/, TTree *clustersTree, AliESDEvent *pESD) const
 398   {
 399
 400   /***************************************************
 401   Resonstruct digits to vertex position
 402   ****************************************************/
 403
 404   AliDebug(1,Form("Start FillESD T0"));
 405   Float_t channelWidth = 0.0244;
 406   Float_t c = 29.9792458; // cm/ns
 407   Float_t currentVertex=0, shift=0;
 408   Int_t ncont=0;
 409   const AliESDVertex* vertex = pESD->GetPrimaryVertex();
 410   if (!vertex)        vertex = pESD->GetPrimaryVertexSPD();
 411   if (!vertex)        vertex = pESD->GetPrimaryVertexTPC();
 412   if (!vertex)        vertex = pESD->GetVertex();
 413
 414   if (vertex) {
 415     AliDebug(2, Form("Got %s (%s) from ESD: %f",
 416                     vertex->GetName(), vertex->GetTitle(), vertex->GetZ()));
 417     currentVertex = vertex->GetZ();
 418
 419     ncont = vertex->GetNContributors();
 420     // cout<<" spdver "<<spdver<<" ncont "<<ncont<<endl;
 421     if(ncont>3 ) {
 422       //     hVertexSPD->Fill(spdver);
 423       shift = currentVertex/c;
 424       //          cout<<" vertex shif "<<shift<<" vertex "<<spdver<<" IsFromVertexer3D  "<<fverSPD->IsFromVertexer3D()<<endl;
 425     }
 426   }
 427   TTree *treeR = clustersTree;
 428
 429    AliT0RecPoint* frecpoints= new AliT0RecPoint ();
 430     if (!frecpoints) {
 431     AliError("Reconstruct Fill ESD >> no recpoints found");
 432     return;
 433   }
 434
 435   AliDebug(1,Form("Start FillESD T0"));
 436   TBranch *brRec = treeR->GetBranch("T0");
 437   if (brRec) {
 438     brRec->SetAddress(&frecpoints);
 439   }else{
 440     AliError(Form("EXEC Branch T0 rec not found"));
 441     return;
 442   }
 443
 444     brRec->GetEntry(0);
 445     Double32_t amp[24], time[24];
 446     Double32_t timeClock[3];
 447     Double32_t zPosition = frecpoints -> GetVertex();
 448     Double32_t timeStart = frecpoints -> GetMeanTime();
 449     timeClock[0] = frecpoints -> GetT0clock() ;
 450     timeClock[1] = frecpoints -> GetBestTimeA() + shift;
 451     timeClock[2] = frecpoints -> GetBestTimeC() - shift;
 452     for ( Int_t i=0; i<24; i++) {
 453       time[i] =  frecpoints -> GetTime(i); // ps to ns
 454       amp[i] = frecpoints -> GetAmp(i);
 455     }
 456     Int_t trig= frecpoints ->GetT0Trig();
 457     pESD->SetT0Trig(trig);
 458
 459     pESD->SetT0zVertex(zPosition); //vertex Z position
 460     pESD->SetT0(timeStart);        // interaction time
 461     for(Int_t i=0; i<3; i++)
 462       pESD->SetT0TOF(i,timeClock[i]);   // interaction time (ns)
 463     pESD->SetT0time(time);         // best TOF on each PMT
 464     pESD->SetT0amplitude(amp);     // number of particles(MIPs) on each PMT
 465
 466     AliDebug(1,Form("T0: Vertex %f (T0A+T0C)/2 %f #channels T0signal %f ns OrA %f ns OrC %f T0trig %i\n",zPosition, timeStart, timeClock[0], timeClock[1], timeClock[2], trig));
 467
 468
 469 } // vertex in 3 sigma
 470
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