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("","")
71 fDefaultInit = kTRUE ;
74 //____________________________________________________________________________
75 AliEMCALSDigitizer::AliEMCALSDigitizer(const char * alirunFileName, const char * eventFolderName):
76 TTask("EMCAL"+AliConfig::fgkSDigitizerTaskName, alirunFileName),
77 fEventFolderName(eventFolderName)
82 fDefaultInit = kFALSE ;
86 //____________________________________________________________________________
87 AliEMCALSDigitizer::AliEMCALSDigitizer(const AliEMCALSDigitizer & sd) : TTask(sd) {
92 fECPrimThreshold = sd.fECPrimThreshold ;
93 fSDigitsInRun = sd.fSDigitsInRun ;
94 SetName(sd.GetName()) ;
95 SetTitle(sd.GetTitle()) ;
96 fEventFolderName = sd.fEventFolderName;
100 //____________________________________________________________________________
101 void AliEMCALSDigitizer::Init(){
102 // Initialization: open root-file, allocate arrays for hits and sdigits,
103 // attach task SDigitizer to the list of EMCAL tasks
105 // Initialization can not be done in the default constructor
106 //============================================================= YS
107 // The initialisation is now done by the getter
111 AliEMCALGetter * gime = AliEMCALGetter::Instance(GetTitle(), fEventFolderName.Data());
113 Fatal("Init", "Could not obtain the Getter objectfor file %s and event %s !", GetTitle(), fEventFolderName.Data()) ;
117 TString opt("SDigits") ;
118 if(gime->VersionExists(opt) ) {
119 Error( "Init", "Give a version name different from %s", fEventFolderName.Data() ) ;
123 gime->PostSDigitizer(this);
124 gime->EmcalLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
128 //____________________________________________________________________________
129 void AliEMCALSDigitizer::InitParameters()
131 // Initializes parameters
135 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
136 const AliEMCALGeometry * geom = gime->EMCALGeometry() ;
137 if (geom->GetSampling() == 0.) {
138 printf("InitParameters: Sampling factor not set !") ;
142 printf("InitParameters: Sampling factor set to %f\n", geom->GetSampling()) ;
144 // this threshold corresponds approximately to 100 MeV
145 fECPrimThreshold = 100E-3 / ( geom->GetSampling() * geom->GetNECLayers()) * geom->GetNECLayers() ;
148 //____________________________________________________________________________
149 void AliEMCALSDigitizer::Exec(Option_t *option)
151 // Collects all hit of the same tower into digits
152 if (strstr(option, "print") ) {
157 if(strstr(option,"tim"))
158 gBenchmark->Start("EMCALSDigitizer");
160 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
162 //switch off reloading of this task while getting event
163 if (!fInit) { // to prevent overwrite existing file
164 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
168 Int_t nevents = gime->MaxEvent() ;
170 for(ievent = 0; ievent < nevents; ievent++){
171 gime->Event(ievent,"H") ;
173 TTree * treeS = gime->TreeS();
174 TClonesArray * hits = gime->Hits() ;
175 TClonesArray * sdigits = gime->SDigits() ;
178 //Now make SDigits from hits, for EMCAL it is the same, so just copy
179 Int_t nPrim = static_cast<Int_t>((gime->TreeH())->GetEntries()) ;
180 // Attention nPrim is the number of primaries tracked by Geant
181 // and this number could be different to the number of Primaries in TreeK;
183 for ( iprim = 0 ; iprim < nPrim ; iprim++ ) {
184 //=========== Get the EMCAL branch from Hits Tree for the Primary iprim
187 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
188 AliEMCALHit * hit = dynamic_cast<AliEMCALHit*>(hits->At(i)) ;
189 AliEMCALDigit * curSDigit = 0 ;
190 AliEMCALDigit * sdigit = 0 ;
191 Bool_t newsdigit = kTRUE;
193 // Assign primary number only if deposited energy is significant
194 AliEMCALGeometry * geom = gime->EMCALGeometry() ;
195 if( geom->IsInECA(hit->GetId()) ){
196 if( hit->GetEnergy() > fECPrimThreshold )
197 curSDigit = new AliEMCALDigit( hit->GetPrimary(),
198 hit->GetIparent(), hit->GetId(),
199 Digitize(hit->GetEnergy()), hit->GetTime() ) ;
201 curSDigit = new AliEMCALDigit( -1 ,
204 Digitize(hit->GetEnergy()), hit->GetTime() ) ;
212 for(check= 0; check < nSdigits ; check++) {
213 sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(check)) ;
215 if( sdigit->GetId() == curSDigit->GetId()) { // Are we in the same ECAL tower ?
216 *sdigit = *sdigit + *curSDigit;
222 new((*sdigits)[nSdigits]) AliEMCALDigit(*curSDigit);
226 } // loop over all hits (hit = deposited energy/entering particle)
230 nSdigits = sdigits->GetEntriesFast() ;
231 fSDigitsInRun += nSdigits ;
232 sdigits->Expand(nSdigits) ;
234 Int_t nPrimarymax = -1 ;
236 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
237 AliEMCALDigit * sdigit = dynamic_cast<AliEMCALDigit *>(sdigits->At(i)) ;
238 sdigit->SetIndexInList(i) ;
241 for (i = 0 ; i < sdigits->GetEntriesFast() ; i++) {
242 if (((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) > nPrimarymax)
243 nPrimarymax = ((dynamic_cast<AliEMCALDigit *>(sdigits->At(i)))->GetNprimary()) ;
247 //First list of sdigits
249 Int_t bufferSize = 32000 ;
250 TBranch * sdigitsBranch = treeS->Branch("EMCAL",&sdigits,bufferSize);
252 sdigitsBranch->Fill() ;
254 gime->WriteSDigits("OVERWRITE");
258 gime->WriteSDigitizer("OVERWRITE");
260 if(strstr(option,"deb"))
261 PrintSDigits(option) ;
266 gime->EmcalLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
268 if(strstr(option,"tim")){
269 gBenchmark->Stop("EMCALSDigitizer");
270 printf("Exec: took %f seconds for SDigitizing %f seconds per event",
271 gBenchmark->GetCpuTime("EMCALSDigitizer"), gBenchmark->GetCpuTime("EMCALSDigitizer") ) ;
276 //__________________________________________________________________
277 void AliEMCALSDigitizer::Print()const
279 // Prints parameters of SDigitizer
280 printf("Print: \n------------------- %s -------------", GetName() ) ;
281 printf(" Writing SDigits to branch with title %s\n", fEventFolderName.Data()) ;
282 printf(" with digitization parameters A = %f\n", fA) ;
283 printf(" B = %f\n", fB) ;
284 printf(" Threshold for EC Primary assignment= %f\n", fECPrimThreshold) ;
285 printf("---------------------------------------------------\n") ;
289 //__________________________________________________________________
290 Bool_t AliEMCALSDigitizer::operator==( AliEMCALSDigitizer const &sd )const
293 // SDititizers are equal if their pedestal, slope and threshold are equal
294 if( (fA==sd.fA)&&(fB==sd.fB)&&
295 (fECPrimThreshold==sd.fECPrimThreshold))
301 //__________________________________________________________________
302 void AliEMCALSDigitizer::PrintSDigits(Option_t * option)
304 //Prints list of digits produced at the current pass of AliEMCALDigitizer
307 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
308 const TClonesArray * sdigits = gime->SDigits() ;
311 printf("event %i", gAlice->GetEvNumber()) ;
312 printf("\n Number of entries in SDigits list %i", sdigits->GetEntriesFast());
313 if(strstr(option,"all")||strstr(option,"EMC")){
316 AliEMCALDigit * digit;
317 printf("\n Id Amplitude Time Index Nprim: Primaries list \n") ;
319 char * tempo = new char[8192];
320 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
321 digit = dynamic_cast<AliEMCALDigit *>( sdigits->At(index) ) ;
322 sprintf(tempo, "\n%6d %8d %6.5e %4d %2d :",
323 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
327 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
328 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
336 //____________________________________________________________________________
337 void AliEMCALSDigitizer::Unload() const
339 // Unload Hits and SDigits from the folder
340 AliEMCALGetter * gime = AliEMCALGetter::Instance() ;
341 AliEMCALLoader * loader = gime->EmcalLoader() ;
342 loader->UnloadHits() ;
343 loader->UnloadSDigits() ;