1 /*************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 //_________________________________________________________________________
19 // This is a TTask that makes SDigits out of Hits
20 // A Summable Digits is the sum of all hits originating
21 // from one in one tower of the EMCAL
22 // A threshold for assignment of the primary to SDigit is applied
23 // SDigits are written to TreeS, branch "EMCAL"
24 // AliEMCALSDigitizer with all current parameters is written
25 // to TreeS branch "AliEMCALSDigitizer".
26 // Both branches have the same title. If necessary one can produce
27 // another set of SDigits with different parameters. Two versions
28 // can be distunguished using titles of the branches.
30 // root [0] AliEMCALSDigitizer * s = new AliEMCALSDigitizer("galice.root")
31 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
32 // root [1] s->ExecuteTask()
33 // // Makes SDigitis for all events stored in galice.root
34 // root [2] s->SetPedestalParameter(0.001)
35 // // One can change parameters of digitization
36 // root [3] s->SetSDigitsBranch("Redestal 0.001")
37 // // and write them into the new branch
38 // root [4] s->ExeciteTask("deb all tim")
39 // // available parameters:
40 // deb - print # of produced SDigitis
41 // deb all - print # and list of produced SDigits
42 // tim - print benchmarking information
44 //*-- Author : Sahal Yacoob (LBL)
45 // based on : AliPHOSSDigitzer
46 //////////////////////////////////////////////////////////////////////////////
49 // --- ROOT system ---
56 #include "TGeometry.h"
57 #include "TBenchmark.h"
58 // --- Standard library ---
61 // --- AliRoot header files ---
63 #include "AliHeader.h"
64 #include "AliEMCALDigit.h"
65 #include "AliEMCALHit.h"
66 #include "AliEMCALSDigitizer.h"
67 #include "AliEMCALGeometry.h"
68 #include "AliEMCALv1.h"
69 #include "AliEMCALGetter.h"
71 ClassImp(AliEMCALSDigitizer)
74 //____________________________________________________________________________
75 AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("AliEMCALSDigitizer","")
79 fDefaultInit = kTRUE ;
82 //____________________________________________________________________________
83 AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
88 fDefaultInit = kFALSE ;
91 //____________________________________________________________________________
92 AliEMCALSDigitizer::~AliEMCALSDigitizer()
95 // fDefaultInit = kTRUE if SDigitizer created by default ctor (to get just the parameters)
98 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
100 // remove the task from the folder list
101 gime->RemoveTask("S",GetName()) ;
103 TString name(GetName()) ;
104 if (! name.IsNull() )
105 if (name.Index(":") > 0)
106 name.Remove(name.Index(":")) ;
108 // remove the Hits from the folder list
109 gime->RemoveObjects("H",name) ;
111 // remove the SDigits from the folder list
112 gime->RemoveObjects("S", name) ;
114 // Close the root file
121 //____________________________________________________________________________
122 void AliEMCALSDigitizer::Init(){
124 // Initialization: open root-file, allocate arrays for hits and sdigits,
125 // attach task SDigitizer to the list of EMCAL tasks
127 // Initialization can not be done in the default constructor
128 //============================================================= YS
129 // The initialisation is now done by the getter
131 if( strcmp(GetTitle(), "") == 0 )
132 SetTitle("galice.root") ;
134 AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;
136 cerr << "ERROR: AliEMCALSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
140 gime->PostSDigits( GetName(), GetTitle() ) ;
142 TString sdname(GetName() );
144 sdname.Append(GetTitle() ) ;
145 SetName(sdname.Data()) ;
146 gime->PostSDigitizer(this) ;
151 //____________________________________________________________________________
152 void AliEMCALSDigitizer::InitParameters(){
155 fTowerPrimThreshold = 0.01 ;
156 fPreShowerPrimThreshold = 0.0001 ;
158 fPhotonElectronFactor = 5000. ; // photoelectrons per GeV
163 //____________________________________________________________________________
164 void AliEMCALSDigitizer::Exec(Option_t *option) {
166 // Collects all hits in the same active volume into digit
168 if( strcmp(GetName(), "") == 0 )
171 if (strstr(option, "print") ) {
176 if(strstr(option,"tim"))
177 gBenchmark->Start("EMCALSDigitizer");
180 //Check, if this branch already exits
181 gAlice->GetEvent(0) ;
183 TString sdname(GetName()) ;
184 sdname.Remove(sdname.Index(GetTitle())-1) ;
186 if(gAlice->TreeS() ) {
187 TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
189 TBranch * branch = 0 ;
190 Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ;
192 while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound || !sdigitizerfound) ) {
193 TString thisName( GetName() ) ;
194 TString branchName( branch->GetTitle() ) ;
195 branchName.Append(":") ;
196 if ( (strcmp(branch->GetName(), "EMCAL")==0) && thisName.BeginsWith(branchName) )
199 else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && thisName.BeginsWith(branchName) )
200 sdigitizerfound = kTRUE ;
203 if ( emcalfound || sdigitizerfound ) {
204 cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
205 << " already exits" << endl ;
210 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
211 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
214 for(ievent = 0; ievent < nevents; ievent++){
215 gime->Event(ievent,"H") ;
216 const TClonesArray * fHits = gime->Hits() ;
217 TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
221 //Collects all hits in the same active volume into digit
226 //Now made SDigits from hits, for EMCAL it is the same, so just copy
228 // for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
229 //gime->Track(itrack);
230 //=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
233 for ( i = 0 ; i < fHits->GetEntries() ; i++ ) { // loop over all hits (hit = deposited energy/layer/entering particle)
234 AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(fHits->At(i)) ;
235 AliEMCALDigit * curSDigit = 0 ;
236 AliEMCALDigit * sdigit = 0 ;
237 Bool_t newsdigit = kTRUE;
241 // Assign primary number only if deposited energy is significant
243 if( (!hit->IsInPreShower() && hit->GetEnergy() > fTowerPrimThreshold) ||
244 (hit->IsInPreShower() && hit->GetEnergy() > fPreShowerPrimThreshold)) {
245 curSDigit = new AliEMCALDigit( hit->GetPrimary(),
246 hit->GetIparent(),Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
247 Digitize(hit->GetEnergy()),
250 curSDigit = new AliEMCALDigit( -1 ,
252 Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
253 Digitize(hit->GetEnergy()),
257 for(check= 0; check < nSdigits ; check++) {
258 sdigit = (AliEMCALDigit *)sdigits->At(check);
259 if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same tower or the same preshower ?
260 *sdigit = *sdigit + *curSDigit;
266 new((*sdigits)[nSdigits]) AliEMCALDigit(*curSDigit);
269 } // loop over all hits (hit = deposited energy/layer/entering particle)
270 // } // loop over tracks
274 nSdigits = sdigits->GetEntriesFast() ;
276 sdigits->Expand(nSdigits) ;
279 const AliEMCALGeometry * geom = gime->EMCALGeometry() ;
281 Int_t lastPreShowerIndex = nSdigits - 1 ;
282 if (!(dynamic_cast<AliEMCALDigit *>(sdigits->At(lastPreShowerIndex))->IsInPreShower()))
283 lastPreShowerIndex = -2;
284 Int_t firstPreShowerIndex = 100000 ;
286 AliEMCALDigit * sdigit = 0 ;
287 for ( index = 0; index < nSdigits ; index++) {
288 sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) ) ;
289 if (sdigit->IsInPreShower() ){
290 firstPreShowerIndex = index ;
295 AliEMCALDigit * preshower ;
296 AliEMCALDigit * tower ;
297 Int_t lastIndex = lastPreShowerIndex +1 ;
300 for (index = firstPreShowerIndex ; index <= lastPreShowerIndex; index++) {
301 preshower = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) );
302 Bool_t towerFound = kFALSE ;
304 for (jndex = 0; jndex < firstPreShowerIndex; jndex++) {
305 tower = dynamic_cast<AliEMCALDigit *>(sdigits->At(jndex) );
306 if ( (preshower->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) == tower->GetId() ) {
307 Float_t towerEnergy = static_cast<Float_t>(tower->GetAmp()) ;
308 Float_t preshoEnergy = static_cast<Float_t>(preshower->GetAmp()) ;
309 towerEnergy +=preshoEnergy ;
310 *tower = *tower + *preshower ; // and add preshower multiplied by layer ratio to tower
311 tower->SetAmp(static_cast<Int_t>(TMath::Ceil(towerEnergy))) ;
317 new((*sdigits)[lastIndex]) AliEMCALDigit(*preshower);
318 AliEMCALDigit * temp = dynamic_cast<AliEMCALDigit *>(sdigits->At(lastIndex)) ;
319 temp->SetId(temp->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) ;
325 Int_t NPrimarymax = -1 ;
326 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
327 sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
328 sdigit->SetIndexInList(i) ;
331 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
332 if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > NPrimarymax)
333 NPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
336 if(gAlice->TreeS() == 0)
337 gAlice->MakeTree("S",fSplitFile);
339 //First list of sdigits
340 Int_t bufferSize = 32000 ;
341 TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
342 sdigitsBranch->SetTitle(sdname);
344 //second - SDigitizer
345 Int_t splitlevel = 0 ;
346 AliEMCALSDigitizer * sd = this ;
347 TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
348 &sd,bufferSize,splitlevel);
349 sdigitizerBranch->SetTitle(sdname);
351 sdigitsBranch->Fill() ;
352 sdigitizerBranch->Fill() ;
353 gAlice->TreeS()->AutoSave() ;
355 if(strstr(option,"deb"))
356 PrintSDigits(option) ;
360 if(strstr(option,"tim")){
361 gBenchmark->Stop("EMCALSDigitizer");
362 cout << "AliEMCALSDigitizer:" << endl ;
363 cout << " took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing "
364 << gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
370 //__________________________________________________________________
371 void AliEMCALSDigitizer::SetSDigitsBranch(const char * title ){
373 // Setting title to branch SDigits
375 TString stitle(title) ;
377 // check if branch with title already exists
378 TBranch * sdigitsBranch =
379 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("EMCAL")) ;
380 TBranch * sdigitizerBranch =
381 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
382 const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
383 const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
384 if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
385 cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
389 cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
393 // Post to the WhiteBoard
394 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
395 gime->PostSDigits( title, GetTitle()) ;
400 //__________________________________________________________________
401 void AliEMCALSDigitizer::SetSplitFile(const TString splitFileName)
403 // Diverts the SDigits in a file separate from the hits file
405 TDirectory * cwd = gDirectory ;
407 if ( !(gAlice->GetTreeSFileName() == splitFileName) ) {
408 if (gAlice->GetTreeSFile() )
409 gAlice->GetTreeSFile()->Close() ;
412 fSplitFile = gAlice->InitTreeFile("S",splitFileName.Data());
414 gAlice->Write(0, TObject::kOverwrite);
416 TTree *treeE = gAlice->TreeE();
418 cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> No TreeE found "<<endl;
424 AliHeader *header = new AliHeader();
425 treeE->SetBranchAddress("Header", &header);
426 treeE->SetBranchStatus("*",1);
427 TTree *treeENew = treeE->CloneTree();
428 treeENew->Write(0, TObject::kOverwrite);
431 TGeometry *AliceGeom = static_cast<TGeometry*>(cwd->Get("AliceGeom"));
433 cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> AliceGeom was not found in the input file "<<endl;
436 AliceGeom->Write(0, TObject::kOverwrite) ;
438 gAlice->MakeTree("S",fSplitFile);
440 cout << "INFO: AliEMCALSDigitizer::SetSPlitFile -> SDigits will be stored in " << splitFileName.Data() << endl ;
443 //__________________________________________________________________
444 void AliEMCALSDigitizer::Print(Option_t* option)const{
445 cout << "------------------- "<< GetName() << " -------------" << endl ;
446 cout << " Writing SDigitis to branch with title " << GetName() << endl ;
447 cout << " with digitization parameters A = " << fA << endl ;
448 cout << " B = " << fB << endl ;
449 cout << " Threshold for Primary assignment in Tower = " << fTowerPrimThreshold << endl ;
450 cout << " Threshold for Primary assignment in PreShower = " << fPreShowerPrimThreshold << endl ;
451 cout << "---------------------------------------------------"<<endl ;
454 //__________________________________________________________________
455 Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
456 if( (fA==sd.fA)&&(fB==sd.fB)&&
457 (fTowerPrimThreshold==sd.fTowerPrimThreshold) &&
458 (fPreShowerPrimThreshold==sd.fPreShowerPrimThreshold))
463 //__________________________________________________________________
464 void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
465 //Prints list of digits produced at the current pass of AliEMCALDigitizer
467 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
468 TString sdname(GetName()) ;
469 sdname.Remove(sdname.Index(GetTitle())-1) ;
470 const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
472 cout << "AliEMCALSDigitiser: event " << gAlice->GetEvNumber() << endl ;
473 cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
475 if(strstr(option,"all")||strstr(option,"EMC")){
478 AliEMCALDigit * digit;
479 cout << "SDigit Id " << " Amplitude " << " Time " << " Index " << " Nprim " << " Primaries list " << endl;
481 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
482 digit = (AliEMCALDigit * ) sdigits->At(index) ;
483 cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " " << digit->GetTime()
484 << setw(6) << digit->GetIndexInList() << " "
485 << setw(5) << digit->GetNprimary() <<" ";
488 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
489 cout << " " << digit->GetPrimary(iprimary+1) << " ";
495 //________________________________________________________________________
496 Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t ihit, Bool_t preshower){
497 // Method to Transform from Hit Id to Digit Id
498 // This function should be one to one
499 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
500 const AliEMCALGeometry * geom = gime->EMCALGeometry();
501 Int_t ieta = ((ihit-1)/geom->GetNPhi())%geom->GetNZ(); // eta Tower Index
502 Int_t iphi = (ihit-1)%(geom->GetNPhi())+1; //phi Tower Index
506 if (preshower)ipre = 1;
507 if (iphi > 0 && ieta >= 0){
508 it = iphi+ieta*geom->GetNPhi() + ipre*geom->GetNPhi()*geom->GetNZ();
511 cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Eta number = "
512 << ieta << "Phi number = " << iphi << endl ;
514 } // end if iphi>0 && ieta>0
516 //_______________________________________________________________________________________
517 // void AliEMCALSDigitizer::TestTowerID(void)
521 // Bool_t preshower = kFALSE;
522 // for (j = 0 ; j < 10 ; j++){ // loop over hit id
524 // for (i = 0 ; i <= 2 ; i++){ // loop over
525 // Int_t k = i*96*144+j*144+1;
526 // cout << " Hit Index = " << k << " " << j*10 << " TOWERID = " << Layer2TowerID(k, preshower) << endl ;