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","")
81 //____________________________________________________________________________
82 AliEMCALSDigitizer::AliEMCALSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask(sDigitsTitle, headerFile)
89 //____________________________________________________________________________
90 AliEMCALSDigitizer::~AliEMCALSDigitizer()
93 // gime=0 if Digitizer created by default ctor (to get just the parameters)
95 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
98 // remove the task from the folder list
99 gime->RemoveTask("S",GetName()) ;
101 TString name(GetName()) ;
102 if (! name.IsNull() )
103 if (name.Index(":") > 0)
104 name.Remove(name.Index(":")) ;
106 // remove the Hits from the folder list
107 gime->RemoveObjects("H",name) ;
109 // remove the SDigits from the folder list
110 gime->RemoveObjects("S", name) ;
112 // Close the root file
119 //____________________________________________________________________________
120 void AliEMCALSDigitizer::Init(){
122 // Initialization: open root-file, allocate arrays for hits and sdigits,
123 // attach task SDigitizer to the list of EMCAL tasks
125 // Initialization can not be done in the default constructor
126 //============================================================= YS
127 // The initialisation is now done by the getter
129 if( strcmp(GetTitle(), "") == 0 )
130 SetTitle("galice.root") ;
132 AliEMCALGetter * gime = AliEMCALGetter::GetInstance(GetTitle(), GetName(), "update") ;
134 cerr << "ERROR: AliEMCALSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
138 gime->PostSDigits( GetName(), GetTitle() ) ;
140 TString sdname(GetName() );
142 sdname.Append(GetTitle() ) ;
143 SetName(sdname.Data()) ;
144 gime->PostSDigitizer(this) ;
149 //____________________________________________________________________________
150 void AliEMCALSDigitizer::InitParameters(){
153 fTowerPrimThreshold = 0.01 ;
154 fPreShowerPrimThreshold = 0.0001 ;
156 fPhotonElectronFactor = 5000. ; // photoelectrons per GeV
161 //____________________________________________________________________________
162 void AliEMCALSDigitizer::Exec(Option_t *option) {
164 // Collects all hits in the same active volume into digit
166 if( strcmp(GetName(), "") == 0 )
169 if (strstr(option, "print") ) {
174 if(strstr(option,"tim"))
175 gBenchmark->Start("EMCALSDigitizer");
178 //Check, if this branch already exits
179 gAlice->GetEvent(0) ;
181 TString sdname(GetName()) ;
182 sdname.Remove(sdname.Index(GetTitle())-1) ;
184 if(gAlice->TreeS() ) {
185 TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
187 TBranch * branch = 0 ;
188 Bool_t emcalfound = kFALSE, sdigitizerfound = kFALSE ;
190 while ( (branch = (static_cast<TBranch*>(next()))) && (!emcalfound || !sdigitizerfound) ) {
191 TString thisName( GetName() ) ;
192 TString branchName( branch->GetTitle() ) ;
193 branchName.Append(":") ;
194 if ( (strcmp(branch->GetName(), "EMCAL")==0) && thisName.BeginsWith(branchName) )
197 else if ( (strcmp(branch->GetName(), "AliEMCALSDigitizer")==0) && thisName.BeginsWith(branchName) )
198 sdigitizerfound = kTRUE ;
201 if ( emcalfound || sdigitizerfound ) {
202 cerr << "WARNING: AliEMCALSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
203 << " already exits" << endl ;
208 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
209 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
212 for(ievent = 0; ievent < nevents; ievent++){
213 gime->Event(ievent,"H") ;
214 const TClonesArray * fHits = gime->Hits() ;
215 TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
219 //Collects all hits in the same active volume into digit
224 //Now made SDigits from hits, for EMCAL it is the same, so just copy
226 // for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
227 //gime->Track(itrack);
228 //=========== Get the EMCAL branch from Hits Tree for the Primary track itrack
231 for ( i = 0 ; i < fHits->GetEntries() ; i++ ) { // loop over all hits (hit = deposited energy/layer/entering particle)
232 AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(fHits->At(i)) ;
233 AliEMCALDigit * curSDigit = 0 ;
234 AliEMCALDigit * sdigit = 0 ;
235 Bool_t newsdigit = kTRUE;
239 // Assign primary number only if deposited energy is significant
241 if( (!hit->IsInPreShower() && hit->GetEnergy() > fTowerPrimThreshold) ||
242 (hit->IsInPreShower() && hit->GetEnergy() > fPreShowerPrimThreshold)) {
243 curSDigit = new AliEMCALDigit( hit->GetPrimary(),
244 hit->GetIparent(),Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
245 Digitize(hit->GetEnergy()),
248 curSDigit = new AliEMCALDigit( -1 ,
250 Layer2TowerID(hit->GetId(),hit->IsInPreShower()),
251 Digitize(hit->GetEnergy()),
255 for(check= 0; check < nSdigits ; check++) {
256 sdigit = (AliEMCALDigit *)sdigits->At(check);
257 if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same tower or the same preshower ?
258 *sdigit = *sdigit + *curSDigit;
264 new((*sdigits)[nSdigits]) AliEMCALDigit(*curSDigit);
267 } // loop over all hits (hit = deposited energy/layer/entering particle)
268 // } // loop over tracks
272 nSdigits = sdigits->GetEntriesFast() ;
274 sdigits->Expand(nSdigits) ;
277 const AliEMCALGeometry * geom = gime->EMCALGeometry() ;
279 Int_t lastPreShowerIndex = nSdigits - 1 ;
280 if (!(dynamic_cast<AliEMCALDigit *>(sdigits->At(lastPreShowerIndex))->IsInPreShower()))
281 lastPreShowerIndex = -2;
282 Int_t firstPreShowerIndex = 100000 ;
284 AliEMCALDigit * sdigit = 0 ;
285 for ( index = 0; index < nSdigits ; index++) {
286 sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) ) ;
287 if (sdigit->IsInPreShower() ){
288 firstPreShowerIndex = index ;
293 AliEMCALDigit * preshower ;
294 AliEMCALDigit * tower ;
295 Int_t lastIndex = lastPreShowerIndex +1 ;
298 for (index = firstPreShowerIndex ; index <= lastPreShowerIndex; index++) {
299 preshower = dynamic_cast<AliEMCALDigit *>(sdigits->At(index) );
300 Bool_t towerFound = kFALSE ;
302 for (jndex = 0; jndex < firstPreShowerIndex; jndex++) {
303 tower = dynamic_cast<AliEMCALDigit *>(sdigits->At(jndex) );
304 if ( (preshower->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) == tower->GetId() ) {
305 Float_t towerEnergy = static_cast<Float_t>(tower->GetAmp()) ;
306 Float_t preshoEnergy = static_cast<Float_t>(preshower->GetAmp()) ;
307 towerEnergy +=preshoEnergy ;
308 *tower = *tower + *preshower ; // and add preshower multiplied by layer ratio to tower
309 tower->SetAmp(static_cast<Int_t>(TMath::Ceil(towerEnergy))) ;
315 new((*sdigits)[lastIndex]) AliEMCALDigit(*preshower);
316 AliEMCALDigit * temp = dynamic_cast<AliEMCALDigit *>(sdigits->At(lastIndex)) ;
317 temp->SetId(temp->GetId() - (geom->GetNZ() * geom->GetNPhi()) ) ;
323 Int_t NPrimarymax = -1 ;
324 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
325 sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
326 sdigit->SetIndexInList(i) ;
329 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
330 if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > NPrimarymax)
331 NPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
334 if(gAlice->TreeS() == 0)
335 gAlice->MakeTree("S",fSplitFile);
337 //First list of sdigits
338 Int_t bufferSize = 32000 ;
339 TBranch * sdigitsBranch = gAlice->TreeS()->Branch("EMCAL",&sdigits,bufferSize);
340 sdigitsBranch->SetTitle(sdname);
342 //second - SDigitizer
343 Int_t splitlevel = 0 ;
344 AliEMCALSDigitizer * sd = this ;
345 TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliEMCALSDigitizer","AliEMCALSDigitizer",
346 &sd,bufferSize,splitlevel);
347 sdigitizerBranch->SetTitle(sdname);
349 sdigitsBranch->Fill() ;
350 sdigitizerBranch->Fill() ;
351 gAlice->TreeS()->AutoSave() ;
353 if(strstr(option,"deb"))
354 PrintSDigits(option) ;
358 if(strstr(option,"tim")){
359 gBenchmark->Stop("EMCALSDigitizer");
360 cout << "AliEMCALSDigitizer:" << endl ;
361 cout << " took " << gBenchmark->GetCpuTime("EMCALSDigitizer") << " seconds for SDigitizing "
362 << gBenchmark->GetCpuTime("EMCALSDigitizer")/fNevents << " seconds per event " << endl ;
368 //__________________________________________________________________
369 void AliEMCALSDigitizer::SetSDigitsBranch(const char * title ){
371 // Setting title to branch SDigits
373 TString stitle(title) ;
375 // check if branch with title already exists
376 TBranch * sdigitsBranch =
377 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("EMCAL")) ;
378 TBranch * sdigitizerBranch =
379 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliEMCALSDigitizer")) ;
380 const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
381 const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
382 if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
383 cerr << "ERROR: AliEMCALSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
387 cout << "AliEMCALSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
391 // Post to the WhiteBoard
392 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
393 gime->PostSDigits( title, GetTitle()) ;
398 //__________________________________________________________________
399 void AliEMCALSDigitizer::SetSplitFile(const TString splitFileName)
401 // Diverts the SDigits in a file separate from the hits file
403 TDirectory * cwd = gDirectory ;
405 if ( !(gAlice->GetTreeSFileName() == splitFileName) ) {
406 if (gAlice->GetTreeSFile() )
407 gAlice->GetTreeSFile()->Close() ;
410 fSplitFile = gAlice->InitTreeFile("S",splitFileName.Data());
412 gAlice->Write(0, TObject::kOverwrite);
414 TTree *treeE = gAlice->TreeE();
416 cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> No TreeE found "<<endl;
422 AliHeader *header = new AliHeader();
423 treeE->SetBranchAddress("Header", &header);
424 treeE->SetBranchStatus("*",1);
425 TTree *treeENew = treeE->CloneTree();
426 treeENew->Write(0, TObject::kOverwrite);
429 TGeometry *AliceGeom = static_cast<TGeometry*>(cwd->Get("AliceGeom"));
431 cerr << "ERROR: AliEMCALSDigitizer::SetSPlitFile -> AliceGeom was not found in the input file "<<endl;
434 AliceGeom->Write(0, TObject::kOverwrite) ;
436 gAlice->MakeTree("S",fSplitFile);
438 cout << "INFO: AliEMCALSDigitizer::SetSPlitFile -> SDigits will be stored in " << splitFileName.Data() << endl ;
441 //__________________________________________________________________
442 void AliEMCALSDigitizer::Print(Option_t* option)const{
443 cout << "------------------- "<< GetName() << " -------------" << endl ;
444 cout << " Writing SDigitis to branch with title " << GetName() << endl ;
445 cout << " with digitization parameters A = " << fA << endl ;
446 cout << " B = " << fB << endl ;
447 cout << " Threshold for Primary assignment in Tower = " << fTowerPrimThreshold << endl ;
448 cout << " Threshold for Primary assignment in PreShower = " << fPreShowerPrimThreshold << endl ;
449 cout << "---------------------------------------------------"<<endl ;
452 //__________________________________________________________________
453 Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const{
454 if( (fA==sd.fA)&&(fB==sd.fB)&&
455 (fTowerPrimThreshold==sd.fTowerPrimThreshold) &&
456 (fPreShowerPrimThreshold==sd.fPreShowerPrimThreshold))
461 //__________________________________________________________________
462 void AliEMCALSDigitizer::PrintSDigits(Option_t * option){
463 //Prints list of digits produced at the current pass of AliEMCALDigitizer
465 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
466 TString sdname(GetName()) ;
467 sdname.Remove(sdname.Index(GetTitle())-1) ;
468 const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
470 cout << "AliEMCALSDigitiser: event " << gAlice->GetEvNumber() << endl ;
471 cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
473 if(strstr(option,"all")||strstr(option,"EMC")){
476 AliEMCALDigit * digit;
477 cout << "SDigit Id " << " Amplitude " << " Time " << " Index " << " Nprim " << " Primaries list " << endl;
479 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
480 digit = (AliEMCALDigit * ) sdigits->At(index) ;
481 cout << setw(6) << digit->GetId() << " " << setw(10) << digit->GetAmp() << " " << digit->GetTime()
482 << setw(6) << digit->GetIndexInList() << " "
483 << setw(5) << digit->GetNprimary() <<" ";
486 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
487 cout << " " << digit->GetPrimary(iprimary+1) << " ";
493 //________________________________________________________________________
494 Int_t AliEMCALSDigitizer::Layer2TowerID(Int_t ihit, Bool_t preshower){
495 // Method to Transform from Hit Id to Digit Id
496 // This function should be one to one
497 AliEMCALGetter * gime = AliEMCALGetter::GetInstance() ;
498 const AliEMCALGeometry * geom = gime->EMCALGeometry();
499 Int_t ieta = ((ihit-1)/geom->GetNPhi())%geom->GetNZ(); // eta Tower Index
500 Int_t iphi = (ihit-1)%(geom->GetNPhi())+1; //phi Tower Index
504 if (preshower)ipre = 1;
505 if (iphi > 0 && ieta >= 0){
506 it = iphi+ieta*geom->GetNPhi() + ipre*geom->GetNPhi()*geom->GetNZ();
509 cerr << " AliEMCALSDigitizer::Layer2TowerID() -- there is an error "<< endl << "Eta number = "
510 << ieta << "Phi number = " << iphi << endl ;
512 } // end if iphi>0 && ieta>0
514 //_______________________________________________________________________________________
515 // void AliEMCALSDigitizer::TestTowerID(void)
519 // Bool_t preshower = kFALSE;
520 // for (j = 0 ; j < 10 ; j++){ // loop over hit id
522 // for (i = 0 ; i <= 2 ; i++){ // loop over
523 // Int_t k = i*96*144+j*144+1;
524 // cout << " Hit Index = " << k << " " << j*10 << " TOWERID = " << Layer2TowerID(k, preshower) << endl ;