RICH/AliRICHMerger.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2000, 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 /*
  17 $Log$
  18 Revision 1.2  2001/03/14 18:16:08  jbarbosa
  19 Corrected bug (more to correct).
  20 File "points.dat" is no longer created.
  21
  22 Revision 1.1  2001/02/27 22:13:34  jbarbosa
  23 Implementing merger class.
  24
  25 */
  26
  27 #include <TTree.h>
  28 #include <TVector.h>
  29 #include <TObjArray.h>
  30 #include <TFile.h>
  31 #include <TDirectory.h>
  32 #include <TParticle.h>
  33
  34
  35 // #include "AliMerger.h"
  36 // #include "AliMergable.h"
  37 #include "AliRICHMerger.h"
  38 #include "AliRICHChamber.h"
  39 #include "AliHitMap.h"
  40 #include "AliRICHHitMapA1.h"
  41 #include "AliRICH.h"
  42 #include "AliRICHHit.h"
  43 #include "AliRICHSDigit.h"
  44 #include "AliRICHDigit.h"
  45 #include "AliRICHTransientDigit.h"
  46 #include "AliRun.h"
  47 #include "AliPDG.h"
  48
  49 ClassImp(AliRICHMerger)
  50
  51 //___________________________________________
  52 AliRICHMerger::AliRICHMerger()
  53 {
  54 // Default constructor
  55     fEvNrSig = 0;
  56     fEvNrBgr = 0;
  57     fMerge   = kDigitize;
  58     fFnBgr   = 0;
  59     fHitMap  = 0;
  60     fList    = 0;
  61     fTrH1    = 0;
  62     fHitsBgr = 0;
  63     fSDigitsBgr = 0;
  64     fHitMap     = 0;
  65     fList       = 0;
  66     fTrList     = 0;
  67     fAddress    = 0;
  68 }
  69
  70 //------------------------------------------------------------------------
  71 AliRICHMerger::~AliRICHMerger()
  72 {
  73 // Destructor
  74     if (fTrH1)       delete fTrH1;
  75     if (fHitsBgr)    delete fHitsBgr;
  76     if (fSDigitsBgr) delete fSDigitsBgr;
  77     if (fHitMap)     delete fHitMap;
  78     if (fList)       delete fList;
  79     if (fTrList)     delete fTrList;
  80     if (fAddress)    delete fAddress;
  81 }
  82
  83 //------------------------------------------------------------------------
  84 Bool_t AliRICHMerger::Exists(const AliRICHSDigit *mergable)
  85 {
  86     AliRICHSDigit *padhit = (AliRICHSDigit*) mergable;
  87     return (fHitMap[fNch]->TestHit(padhit->PadX(),padhit->PadY()));
  88 }
  89
  90 //------------------------------------------------------------------------
  91 void AliRICHMerger::Update(AliRICHSDigit *mergable)
  92 {
  93     AliRICHSDigit *padhit = (AliRICHSDigit*) mergable;
  94     AliRICHTransientDigit* pdigit;
  95     Int_t ipx      = padhit->PadX();        // pad number on X
  96     Int_t ipy      = padhit->PadY();        // pad number on Y
  97     Int_t iqpad    = Int_t(padhit->QPad()); // charge per pad
  98
  99     pdigit = (AliRICHTransientDigit*) fHitMap[fNch]->GetHit(ipx, ipy);
 100     // update charge
 101     //
 102     (*pdigit).AddSignal(iqpad);
 103     (*pdigit).AddPhysicsSignal(iqpad);
 104     // update list of tracks
 105     //
 106     TObjArray* fTrList = (TObjArray*)pdigit->TrackList();
 107     Int_t lastEntry = fTrList->GetLast();
 108     TVector *pTrack = (TVector*)fTrList->At(lastEntry);
 109     TVector &ptrk   = *pTrack;
 110     TVector &trinfo = *((TVector*) (*fAddress)[fCountadr-1]);
 111     Int_t lastTrack = Int_t(ptrk(0));
 112
 113     if (trinfo(0) != kBgTag) {
 114         if (lastTrack == fTrack) {
 115             Int_t lastCharge = Int_t(ptrk(1));
 116             lastCharge += iqpad;
 117             fTrList->RemoveAt(lastEntry);
 118             trinfo(1) = lastCharge;
 119             fTrList->AddAt(&trinfo,lastEntry);
 120         } else {
 121             fTrList->Add(&trinfo);
 122         }
 123     } else {
 124         if (lastTrack != -1) fTrList->Add(&trinfo);
 125     }
 126 }
 127
 128 //------------------------------------------------------------------------
 129 void AliRICHMerger::CreateNew(AliRICHSDigit *mergable)
 130 {
 131     AliRICHSDigit *padhit = (AliRICHSDigit*) mergable;
 132     AliRICHTransientDigit* pdigit;
 133
 134     Int_t ipx      = padhit->PadX();       // pad number on X
 135     Int_t ipy      = padhit->PadY();       // pad number on Y
 136     fList->AddAtAndExpand(
 137         new AliRICHTransientDigit(fNch,fDigits),fCounter);
 138     fHitMap[fNch]->SetHit(ipx, ipy, fCounter);
 139     fCounter++;
 140     pdigit = (AliRICHTransientDigit*)fList->At(fList->GetLast());
 141     // list of tracks
 142     TObjArray *fTrList = (TObjArray*)pdigit->TrackList();
 143     TVector &trinfo    = *((TVector*) (*fAddress)[fCountadr-1]);
 144     fTrList->Add(&trinfo);
 145 }
 146
 147
 148 //------------------------------------------------------------------------
 149 void AliRICHMerger::Init()
 150 {
 151 // Initialisation
 152
 153     if (fMerge) fBgrFile = InitBgr();
 154 }
 155
 156
 157
 158 //------------------------------------------------------------------------
 159 TFile* AliRICHMerger::InitBgr()
 160 {
 161 // Initialise background event
 162     TFile *file = new TFile(fFnBgr);
 163 // add error checking later
 164     printf("\n AliRICHMerger has opened %s file with background event \n", fFnBgr);
 165     fHitsBgr     = new TClonesArray("AliRICHHit",1000);
 166     fSDigitsBgr  = new TClonesArray("AliRICHSDigit",1000);
 167     return file;
 168 }
 169
 170 //------------------------------------------------------------------------
 171 void AliRICHMerger::Digitise(Int_t nev, Int_t flag)
 172 {
 173
 174  // keep galice.root for signal and name differently the file for
 175     // background when add! otherwise the track info for signal will be lost !
 176
 177   Int_t particle;
 178
 179   //FILE* points; //these will be the digits...
 180
 181   //points=fopen("points.dat","w");
 182
 183   AliRICHChamber*       iChamber;
 184   AliSegmentation*  segmentation;
 185
 186     Int_t digitise=0;
 187     Int_t trk[50];
 188     Int_t chtrk[50];
 189     TObjArray *list=new TObjArray;
 190     static TClonesArray *pAddress=0;
 191     if(!pAddress) pAddress=new TClonesArray("TVector",1000);
 192     Int_t digits[5];
 193
 194     AliRICH *pRICH = (AliRICH *) gAlice->GetDetector("RICH");
 195     AliHitMap* pHitMap[10];
 196     Int_t i;
 197     for (i=0; i<10; i++) {pHitMap[i]=0;}
 198
 199     if (fMerge ) {
 200       fBgrFile->cd();
 201       //fBgrFile->ls();
 202       //
 203       // Get Hits Tree header from file
 204       if(fHitsBgr) fHitsBgr->Clear();
 205       if(fSDigitsBgr) fSDigitsBgr->Clear();
 206       if(fTrH1) delete fTrH1;
 207       fTrH1 = 0;
 208
 209       char treeName[20];
 210       sprintf(treeName,"TreeH%d",fEvNrBgr);
 211       fTrH1 = (TTree*)gDirectory->Get(treeName);
 212       if (!fTrH1) {
 213         printf("ERROR: cannot find Hits Tree for event:%d\n",fEvNrBgr);
 214       }
 215       //
 216       // Set branch addresses
 217       TBranch *branch;
 218       char branchname[20];
 219       sprintf(branchname,"%s",pRICH->GetName());
 220       if (fTrH1 && fHitsBgr) {
 221         branch = fTrH1->GetBranch(branchname);
 222         if (branch) branch->SetAddress(&fHitsBgr);
 223       }
 224       if (fTrH1 && fSDigitsBgr) {
 225         branch = fTrH1->GetBranch("RICHSDigits");
 226         if (branch) branch->SetAddress(&fSDigitsBgr);
 227       }
 228     }
 229
 230     AliHitMap* hm;
 231     Int_t countadr=0;
 232     Int_t counter=0;
 233     for (i =0; i<kNCH; i++) {
 234       iChamber= &(pRICH->Chamber(i));
 235       segmentation=iChamber->GetSegmentationModel(1);
 236       pHitMap[i] = new AliRICHHitMapA1(segmentation, list);
 237     }
 238     //
 239     //   Loop over tracks
 240     //
 241
 242     TTree *treeH = gAlice->TreeH();
 243     Int_t ntracks =(Int_t) treeH->GetEntries();
 244     for (Int_t track=0; track<ntracks; track++) {
 245       gAlice->ResetHits();
 246       treeH->GetEvent(track);
 247       //
 248       //   Loop over hits
 249       for(AliRICHHit* mHit=(AliRICHHit*)pRICH->FirstHit(-1);
 250           mHit;
 251           mHit=(AliRICHHit*)pRICH->NextHit())
 252         {
 253
 254           Int_t   nch   = mHit->fChamber-1;  // chamber number
 255           Int_t   index = mHit->Track();
 256           if (nch >kNCH) continue;
 257           iChamber = &(pRICH->Chamber(nch));
 258
 259           TParticle *current = (TParticle*)gAlice->Particle(index);
 260
 261           if (current->GetPdgCode() >= 50000050)
 262             {
 263               TParticle *motherofcurrent = (TParticle*)gAlice->Particle(current->GetFirstMother());
 264               particle = motherofcurrent->GetPdgCode();
 265             }
 266           else
 267             {
 268               particle = current->GetPdgCode();
 269             }
 270
 271
 272           //printf("Flag:%d\n",flag);
 273           //printf("Track:%d\n",track);
 274           //printf("Particle:%d\n",particle);
 275
 276           digitise=1;
 277
 278           if (flag == 1)
 279             if(TMath::Abs(particle)==211 || TMath::Abs(particle)==111)
 280               digitise=0;
 281
 282           if (flag == 2)
 283             if(TMath::Abs(particle)==321 || TMath::Abs(particle)==130 || TMath::Abs(particle)==310
 284                || TMath::Abs(particle)==311)
 285               digitise=0;
 286
 287           if (flag == 3 && TMath::Abs(particle)==2212)
 288             digitise=0;
 289
 290           if (flag == 4 && TMath::Abs(particle)==13)
 291             digitise=0;
 292
 293           if (flag == 5 && TMath::Abs(particle)==11)
 294             digitise=0;
 295
 296           if (flag == 6 && TMath::Abs(particle)==2112)
 297             digitise=0;
 298
 299
 300           //printf ("Particle: %d, Flag: %d, Digitise: %d\n",particle,flag,digitise);
 301
 302
 303           if (digitise)
 304             {
 305
 306               //
 307               // Loop over pad hits
 308               for (AliRICHSDigit* mPad=
 309                      (AliRICHSDigit*)pRICH->FirstPad(mHit,pRICH->SDigits());
 310                    mPad;
 311                    mPad=(AliRICHSDigit*)pRICH->NextPad(pRICH->SDigits()))
 312                 {
 313                   Int_t ipx      = mPad->fPadX;       // pad number on X
 314                   Int_t ipy      = mPad->fPadY;       // pad number on Y
 315                   Int_t iqpad    = mPad->fQpad;       // charge per pad
 316                   //
 317                   //
 318                   //printf("X:%d, Y:%d, Q:%d\n",ipx,ipy,iqpad);
 319
 320                   Float_t thex, they, thez;
 321                   segmentation=iChamber->GetSegmentationModel(0);
 322                   segmentation->GetPadC(ipx,ipy,thex,they,thez);
 323                   new((*pAddress)[countadr++]) TVector(2);
 324                   TVector &trinfo=*((TVector*) (*pAddress)[countadr-1]);
 325                   trinfo(0)=(Float_t)track;
 326                   trinfo(1)=(Float_t)iqpad;
 327
 328                   digits[0]=ipx;
 329                   digits[1]=ipy;
 330                   digits[2]=iqpad;
 331
 332                   AliRICHTransientDigit* pdigit;
 333                   // build the list of fired pads and update the info
 334                   if (!pHitMap[nch]->TestHit(ipx, ipy)) {
 335                     list->AddAtAndExpand(new AliRICHTransientDigit(nch,digits),counter);
 336                     pHitMap[nch]->SetHit(ipx, ipy, counter);
 337                     counter++;
 338                     pdigit=(AliRICHTransientDigit*)list->At(list->GetLast());
 339                     // list of tracks
 340                     TObjArray *trlist=(TObjArray*)pdigit->TrackList();
 341                     trlist->Add(&trinfo);
 342                   } else {
 343                     pdigit=(AliRICHTransientDigit*) pHitMap[nch]->GetHit(ipx, ipy);
 344                     // update charge
 345                     (*pdigit).fSignal+=iqpad;
 346                     // update list of tracks
 347                     TObjArray* trlist=(TObjArray*)pdigit->TrackList();
 348                     Int_t lastEntry=trlist->GetLast();
 349                     TVector *ptrkP=(TVector*)trlist->At(lastEntry);
 350                     TVector &ptrk=*ptrkP;
 351                     Int_t lastTrack=Int_t(ptrk(0));
 352                     Int_t lastCharge=Int_t(ptrk(1));
 353                     if (lastTrack==track) {
 354                       lastCharge+=iqpad;
 355                       trlist->RemoveAt(lastEntry);
 356                       trinfo(0)=lastTrack;
 357                       trinfo(1)=lastCharge;
 358                       trlist->AddAt(&trinfo,lastEntry);
 359                     } else {
 360                       trlist->Add(&trinfo);
 361                     }
 362                     // check the track list
 363                     Int_t nptracks=trlist->GetEntriesFast();
 364                     if (nptracks > 2) {
 365                       printf("Attention - tracks:  %d (>2)\n",nptracks);
 366                       //printf("cat,nch,ix,iy %d %d %d %d  \n",icat+1,nch,ipx,ipy);
 367                       for (Int_t tr=0;tr<nptracks;tr++) {
 368                         TVector *pptrkP=(TVector*)trlist->At(tr);
 369                         TVector &pptrk=*pptrkP;
 370                         trk[tr]=Int_t(pptrk(0));
 371                         chtrk[tr]=Int_t(pptrk(1));
 372                       }
 373                     } // end if nptracks
 374                   } //  end if pdigit
 375                 } //end loop over clusters
 376             }// track type condition
 377         } // hit loop
 378     } // track loop
 379
 380     // open the file with background
 381
 382     if (fMerge) {
 383       ntracks = (Int_t)fTrH1->GetEntries();
 384       //
 385       //   Loop over tracks
 386       //
 387       for (fTrack = 0; fTrack < ntracks; fTrack++) {
 388
 389         if (fHitsBgr)       fHitsBgr->Clear();
 390         if (fSDigitsBgr)    fSDigitsBgr->Clear();
 391
 392         fTrH1->GetEvent(fTrack);
 393         //
 394         //   Loop over hits
 395         AliRICHHit* mHit;
 396         for(int i = 0; i < fHitsBgr->GetEntriesFast(); ++i)
 397           {
 398             mHit   = (AliRICHHit*) (*fHitsBgr)[i];
 399             fNch   = mHit->Chamber()-1;  // chamber number
 400             iChamber = &(pRICH->Chamber(fNch));
 401             //Float_t xbgr = mHit->X();
 402             //Float_t ybgr = mHit->Y();
 403             Bool_t cond  = kFALSE;
 404             cond  = kTRUE;
 405             //
 406             // Loop over pad hits
 407             for (AliRICHSDigit* mPad =
 408                    (AliRICHSDigit*)pRICH->FirstPad(mHit,fSDigitsBgr);
 409                  mPad;
 410                  mPad = (AliRICHSDigit*)pRICH->NextPad(fSDigitsBgr))
 411               {
 412                 Int_t ipx      = mPad->PadX();        // pad number on X
 413                 Int_t ipy      = mPad->PadY();        // pad number on Y
 414                 Int_t iqpad    = Int_t(mPad->QPad()); // charge per pad
 415
 416                 new((*fAddress)[fCountadr++]) TVector(2);
 417                 TVector &trinfo = *((TVector*) (*fAddress)[fCountadr-1]);
 418                 trinfo(0) = kBgTag;  // tag background
 419                 trinfo(1) = kBgTag;
 420
 421                 fDigits[0] = ipx;
 422                 fDigits[1] = ipy;
 423                 fDigits[3] = iqpad;
 424
 425                 // build the list of fired pads and update the info
 426                 if (!Exists(mPad)) {
 427                   CreateNew(mPad);
 428                 } else {
 429                   Update(mPad);
 430                 } //  end if !Exists
 431               } //end loop over clusters
 432           } // hit loop
 433       } // track loop
 434
 435       TTree *fAli = gAlice->TreeK();
 436       TFile *file = NULL;
 437
 438       if (fAli) file = fAli->GetCurrentFile();
 439       file->cd();
 440     } // if fMerge
 441
 442     Int_t tracks[10];
 443     Int_t charges[10];
 444     //cout<<"Start filling digits \n "<<endl;
 445     Int_t nentries=list->GetEntriesFast();
 446     //printf(" \n \n nentries %d \n",nentries);
 447
 448     // start filling the digits
 449
 450     for (Int_t nent=0;nent<nentries;nent++) {
 451       AliRICHTransientDigit *address=(AliRICHTransientDigit*)list->At(nent);
 452       if (address==0) continue;
 453
 454       Int_t ich=address->fChamber;
 455       Int_t q=address->fSignal;
 456       iChamber=&(pRICH->Chamber(ich));
 457       AliRICHResponse * response=iChamber->GetResponseModel();
 458       Int_t adcmax= (Int_t) response->MaxAdc();
 459
 460
 461       // add white noise and do zero-suppression and signal truncation (new electronics,old electronics gaus 1.2,0.2)
 462       //printf("Treshold: %d\n",iChamber->fTresh->GetHitIndex(address->fPadX,address->fPadY));
 463       Int_t pedestal = iChamber->fTresh->GetHitIndex(address->fPadX,address->fPadY);
 464
 465       //printf("Pedestal:%d\n",pedestal);
 466       //Int_t pedestal=0;
 467       Float_t treshold = (pedestal + 4*2.2);
 468
 469       Float_t meanNoise = gRandom->Gaus(2.2, 0.3);
 470       Float_t noise     = gRandom->Gaus(0, meanNoise);
 471       q+=(Int_t)(noise + pedestal);
 472       //q+=(Int_t)(noise);
 473       //          magic number to be parametrised !!!
 474       if ( q <= treshold)
 475         {
 476           q = q - pedestal;
 477           continue;
 478         }
 479       q = q - pedestal;
 480       if ( q >= adcmax) q=adcmax;
 481       digits[0]=address->fPadX;
 482       digits[1]=address->fPadY;
 483       digits[2]=q;
 484
 485       TObjArray* trlist=(TObjArray*)address->TrackList();
 486       Int_t nptracks=trlist->GetEntriesFast();
 487
 488       // this was changed to accomodate the real number of tracks
 489       if (nptracks > 10) {
 490         printf("Attention - tracks > 10 %d\n",nptracks);
 491         nptracks=10;
 492       }
 493       if (nptracks > 2) {
 494         printf("Attention - tracks > 2  %d \n",nptracks);
 495         //printf("cat,ich,ix,iy,q %d %d %d %d %d \n",
 496         //icat,ich,digits[0],digits[1],q);
 497       }
 498       for (Int_t tr=0;tr<nptracks;tr++) {
 499         TVector *ppP=(TVector*)trlist->At(tr);
 500         TVector &pp  =*ppP;
 501         tracks[tr]=Int_t(pp(0));
 502         charges[tr]=Int_t(pp(1));
 503       }      //end loop over list of tracks for one pad
 504       if (nptracks < 10 ) {
 505         for (Int_t t=nptracks; t<10; t++) {
 506           tracks[t]=0;
 507           charges[t]=0;
 508         }
 509       }
 510       //write file
 511       //if (ich==2)
 512         //fprintf(points,"%4d,      %4d,      %4d\n",digits[0],digits[1],digits[2]);
 513
 514       // fill digits
 515       pRICH->AddDigits(ich,tracks,charges,digits);
 516     }
 517     gAlice->TreeD()->Fill();
 518
 519     list->Delete();
 520     for(Int_t ii=0;ii<kNCH;++ii) {
 521       if (pHitMap[ii]) {
 522         hm=pHitMap[ii];
 523         delete hm;
 524         pHitMap[ii]=0;
 525       }
 526     }
 527
 528     //TTree *TD=gAlice->TreeD();
 529     //Stat_t ndig=TD->GetEntries();
 530     //cout<<"number of digits  "<<ndig<<endl;
 531     TClonesArray *fDch;
 532     for (int k=0;k<kNCH;k++) {
 533       fDch= pRICH->DigitsAddress(k);
 534       int ndigit=fDch->GetEntriesFast();
 535       printf ("Chamber %d digits %d \n",k,ndigit);
 536     }
 537     pRICH->ResetDigits();
 538     // char hname[30];
 539     // sprintf(hname,"TreeD%d",nev);
 540     // gAlice->TreeD()->Write(hname);
 541     gAlice->TreeD()->Write(0,TObject::kOverwrite);
 542     // reset tree
 543     //    gAlice->TreeD()->Reset();
 544     delete list;
 545     pAddress->Clear();
 546     // gObjectTable->Print();
 547
 548 }
 549
 550
 551
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 553