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
47 // August 2002 Yves Schutz: clone PHOS as closely as possible and intoduction
48 // of new IO (à la PHOS)
49 //////////////////////////////////////////////////////////////////////////////
51 // --- ROOT system ---
52 #include "TBenchmark.h"
54 // --- Standard library ---
57 // --- AliRoot header files ---
58 #include "AliEMCALDigit.h"
59 #include "AliEMCALGetter.h"
60 #include "AliEMCALHit.h"
61 #include "AliEMCALSDigitizer.h"
62 #include "AliEMCALGeometry.h"
64 ClassImp(AliEMCALSDigitizer)
66 //____________________________________________________________________________
67 AliEMCALSDigitizer::AliEMCALSDigitizer():TTask("","")
70 fFirstEvent = fLastEvent = 0 ;
71 fDefaultInit = kTRUE ;
74 //____________________________________________________________________________
75 AliEMCALSDigitizer::AliEMCALSDigitizer(const char * alirunFileName,
76 const char * eventFolderName):
77 TTask("EMCAL"+AliConfig::Instance()->GetSDigitizerTaskName(), alirunFileName),
78 fEventFolderName(eventFolderName)
81 fFirstEvent = fLastEvent = 0 ; // runs one event by defaut
84 fDefaultInit = kFALSE ;
88 //____________________________________________________________________________
89 AliEMCALSDigitizer::AliEMCALSDigitizer(const AliEMCALSDigitizer & sd) : TTask(sd) {
92 fFirstEvent = sd.fFirstEvent ;
93 fLastEvent = sd.fLastEvent ;
96 fECPrimThreshold = sd.fECPrimThreshold ;
97 fSDigitsInRun = sd.fSDigitsInRun ;
98 SetName(sd.GetName()) ;
99 SetTitle(sd.GetTitle()) ;
100 fEventFolderName = sd.fEventFolderName;
104 //____________________________________________________________________________
105 AliEMCALSDigitizer::~AliEMCALSDigitizer() {
107 AliEMCALGetter * gime =
108 AliEMCALGetter::Instance(GetTitle(), fEventFolderName.Data());
109 gime->EmcalLoader()->CleanSDigitizer();
112 //____________________________________________________________________________
113 void AliEMCALSDigitizer::Init(){
114 // Initialization: open root-file, allocate arrays for hits and sdigits,
115 // attach task SDigitizer to the list of EMCAL tasks
117 // Initialization can not be done in the default constructor
118 //============================================================= YS
119 // The initialisation is now done by the getter
123 AliEMCALGetter * gime = AliEMCALGetter::Instance(GetTitle(), fEventFolderName.Data());
125 Fatal("Init", "Could not obtain the Getter objectfor file %s and event %s !", GetTitle(), fEventFolderName.Data()) ;
129 TString opt("SDigits") ;
130 if(gime->VersionExists(opt) ) {
131 Error( "Init", "Give a version name different from %s", fEventFolderName.Data() ) ;
135 gime->PostSDigitizer(this);
136 gime->EmcalLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
140 //____________________________________________________________________________
141 void AliEMCALSDigitizer::InitParameters()
143 // Initializes parameters
147 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
148 const AliEMCALGeometry * geom = gime->EMCALGeometry() ;
149 if (geom->GetSampling() == 0.) {
150 Fatal("InitParameters", "Sampling factor not set !") ;
153 // Info("InitParameters", "Sampling factor set to %f", geom->GetSampling()) ;
155 // this threshold corresponds approximately to 100 MeV
156 fECPrimThreshold = 100E-3;
159 //____________________________________________________________________________
160 void AliEMCALSDigitizer::Exec(Option_t *option)
162 // Collects all hit of the same tower into digits
163 if (strstr(option, "print") ) {
168 if(strstr(option,"tim"))
169 gBenchmark->Start("EMCALSDigitizer");
171 AliEMCALGetter * gime = AliEMCALGetter::Instance(GetTitle()) ;
173 //switch off reloading of this task while getting event
174 if (!fInit) { // to prevent overwrite existing file
175 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
179 if (fLastEvent == -1)
180 fLastEvent = gime->MaxEvent() - 1 ;
182 fLastEvent = TMath::Min(fFirstEvent, gime->MaxEvent()); // only ine event at the time
183 Int_t nEvents = fLastEvent - fFirstEvent + 1;
186 for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) {
187 gime->Event(ievent,"H") ;
188 TTree * treeS = gime->TreeS();
189 TClonesArray * hits = gime->Hits() ;
190 TClonesArray * sdigits = gime->SDigits() ;
193 //Now make SDigits from hits, for EMCAL it is the same, so just copy
194 Int_t nPrim = static_cast<Int_t>((gime->TreeH())->GetEntries()) ;
195 // Attention nPrim is the number of primaries tracked by Geant
196 // and this number could be different to the number of Primaries in TreeK;
198 for ( iprim = 0 ; iprim < nPrim ; iprim++ ) {
199 //=========== Get the EMCAL branch from Hits Tree for the Primary iprim
202 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
203 AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(hits->At(i)) ;
204 AliEMCALDigit * curSDigit = 0 ;
205 AliEMCALDigit * sdigit = 0 ;
206 Bool_t newsdigit = kTRUE;
208 // Assign primary number only if deposited energy is significant
209 AliEMCALGeometry * geom = gime->EMCALGeometry() ;
210 if( geom->IsInECA(hit->GetId()) ){
211 if( hit->GetEnergy() > fECPrimThreshold )
212 curSDigit = new AliEMCALDigit( hit->GetPrimary(),
213 hit->GetIparent(), hit->GetId(),
214 Digitize(hit->GetEnergy()), hit->GetTime() ) ;
216 curSDigit = new AliEMCALDigit( -1 ,
219 Digitize(hit->GetEnergy()), hit->GetTime() ) ;
227 for(check= 0; check < nSdigits ; check++) {
228 sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(check)) ;
230 if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same ECAL tower ?
231 *sdigit = *sdigit + *curSDigit;
237 new((*sdigits)[nSdigits]) AliEMCALDigit(*curSDigit);
241 } // loop over all hits (hit = deposited energy/entering particle)
245 nSdigits = sdigits->GetEntriesFast() ;
246 fSDigitsInRun += nSdigits ;
247 sdigits->Expand(nSdigits) ;
249 Int_t nPrimarymax = -1 ;
251 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
252 AliEMCALDigit * sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
253 sdigit->SetIndexInList(i) ;
256 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
257 if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > nPrimarymax)
258 nPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
262 //First list of sdigits
264 Int_t bufferSize = 32000 ;
265 TBranch * sdigitsBranch = treeS->Branch("EMCAL",&sdigits,bufferSize);
267 sdigitsBranch->Fill() ;
269 gime->WriteSDigits("OVERWRITE");
273 gime->WriteSDigitizer("OVERWRITE");
275 if(strstr(option,"deb"))
276 PrintSDigits(option) ;
281 gime->EmcalLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
283 if(strstr(option,"tim")){
284 gBenchmark->Stop("EMCALSDigitizer");
285 printf("Exec: took %f seconds for SDigitizing %f seconds per event",
286 gBenchmark->GetCpuTime("EMCALSDigitizer"), gBenchmark->GetCpuTime("EMCALSDigitizer")/nEvents ) ;
291 //__________________________________________________________________
292 void AliEMCALSDigitizer::Print()const
294 // Prints parameters of SDigitizer
295 printf("Print: \n------------------- %s -------------", GetName() ) ;
296 printf(" Writing SDigits to branch with title %s\n", fEventFolderName.Data()) ;
297 printf(" with digitization parameters A = %f\n", fA) ;
298 printf(" B = %f\n", fB) ;
299 printf(" Threshold for EC Primary assignment= %f\n", fECPrimThreshold) ;
300 printf("---------------------------------------------------\n") ;
304 //__________________________________________________________________
305 Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const
308 // SDititizers are equal if their pedestal, slope and threshold are equal
309 if( (fA==sd.fA)&&(fB==sd.fB)&&
310 (fECPrimThreshold==sd.fECPrimThreshold))
316 //__________________________________________________________________
317 void AliEMCALSDigitizer::PrintSDigits(Option_t * option)
319 //Prints list of digits produced at the current pass of AliEMCALDigitizer
322 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
323 const TClonesArray * sdigits = gime->SDigits() ;
326 printf("event %i", gAlice->GetEvNumber()) ;
327 printf("\n Number of entries in SDigits list %i", sdigits->GetEntriesFast());
328 if(strstr(option,"all")||strstr(option,"EMC")){
331 AliEMCALDigit * digit;
332 printf("\n Id Amplitude Time Index Nprim: Primaries list \n") ;
334 char * tempo = new char[8192];
335 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
336 digit = dynamic_cast<AliEMCALDigit *>( sdigits->At(index) ) ;
337 sprintf(tempo, "\n%6d %8d %6.5e %4d %2d :",
338 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
342 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
343 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
351 //____________________________________________________________________________
352 void AliEMCALSDigitizer::Unload() const
354 // Unload Hits and SDigits from the folder
355 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
356 AliEMCALLoader * loader = gime->EmcalLoader() ;
357 loader->UnloadHits() ;
358 loader->UnloadSDigits() ;