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 **************************************************************************/
19 //_________________________________________________________________________
20 // This is a TTask that makes SDigits out of Hits
21 // The name of the TTask is also the title of the branch that will contain
22 // the created SDigits
23 // The title of the TTAsk is the name of the file that contains the hits from
24 // which the SDigits are created
25 // A Summable Digits is the sum of all hits originating
26 // from one primary in one active cell
27 // A threshold for assignment of the primary to SDigit is applied
28 // SDigits are written to TreeS, branch "PHOS"
29 // AliPHOSSDigitizer with all current parameters is written
30 // to TreeS branch "AliPHOSSDigitizer".
31 // Both branches have the same title. If necessary one can produce
32 // another set of SDigits with different parameters. Two versions
33 // can be distunguished using titles of the branches.
35 // root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
36 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
37 // root [1] s->ExecuteTask()
38 // // Makes SDigitis for all events stored in galice.root
39 // root [2] s->SetPedestalParameter(0.001)
40 // // One can change parameters of digitization
41 // root [3] s->SetSDigitsBranch("Pedestal 0.001")
42 // // and write them into the new branch
43 // root [4] s->ExecuteTask("deb all tim")
44 // // available parameters:
45 // deb - print # of produced SDigitis
46 // deb all - print # and list of produced SDigits
47 // tim - print benchmarking information
49 //*-- Author : Dmitri Peressounko (SUBATECH & KI)
50 //////////////////////////////////////////////////////////////////////////////
53 // --- ROOT system ---
56 #include "TBenchmark.h"
58 // --- Standard library ---
60 // --- AliRoot header files ---
62 #include "AliPHOSDigit.h"
63 #include "AliPHOSGetter.h"
64 #include "AliPHOSHit.h"
65 #include "AliPHOSSDigitizer.h"
67 ClassImp(AliPHOSSDigitizer)
70 //____________________________________________________________________________
71 AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","")
75 fDefaultInit = kTRUE ;
78 //____________________________________________________________________________
79 AliPHOSSDigitizer::AliPHOSSDigitizer(const char * alirunFileName, const char * eventFolderName):
80 TTask("PHOS"+AliConfig::fgkSDigitizerTaskName, alirunFileName),
81 fEventFolderName(eventFolderName)
87 fDefaultInit = kFALSE ;
90 //____________________________________________________________________________
91 AliPHOSSDigitizer::AliPHOSSDigitizer(const AliPHOSSDigitizer & sd) {
96 fPrimThreshold = sd.fPrimThreshold ;
97 fSDigitsInRun = sd.fSDigitsInRun ;
98 SetName(sd.GetName()) ;
99 SetTitle(sd.GetTitle()) ;
100 fEventFolderName = sd.fEventFolderName;
104 //____________________________________________________________________________
105 void AliPHOSSDigitizer::Init()
107 // Uses the getter to access the required files
111 AliPHOSGetter * gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data());
113 Fatal("Init" ,"Could not obtain the Getter object for 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->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
128 //____________________________________________________________________________
129 void AliPHOSSDigitizer::InitParameters()
131 // initializes the parameters for digitization
134 fPrimThreshold = 0.01 ;
138 //____________________________________________________________________________
139 void AliPHOSSDigitizer::Exec(Option_t *option)
141 // Collects all hits in the same active volume into digit
143 if (strstr(option, "print") ) {
148 if(strstr(option,"tim"))
149 gBenchmark->Start("PHOSSDigitizer");
151 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
153 //switch off reloading of this task while getting event
154 if (!fInit) { // to prevent overwrite existing file
155 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
160 Int_t nevents = gime->MaxEvent() ;
162 for(ievent = 0; ievent < nevents; ievent++){
164 gime->Event(ievent,"H") ;
166 TTree * treeS = gime->TreeS();
167 TClonesArray * hits = gime->Hits() ;
168 TClonesArray * sdigits = gime->SDigits() ;
171 //Now make SDigits from hits, for PHOS it is the same, so just copy
172 Int_t nPrim = static_cast<Int_t>((gime->TreeH())->GetEntries()) ;
173 // Attention nPrim is the number of primaries tracked by Geant
174 // and this number could be different to the number of Primaries in TreeK;
177 for (iprim = 0 ; iprim < nPrim ; iprim ++) {
178 //=========== Get the PHOS branch from Hits Tree for the Primary iprim
181 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
182 AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
183 // Assign primary number only if contribution is significant
185 if( hit->GetEnergy() > fPrimThreshold)
186 new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
187 Digitize(hit->GetEnergy()), hit->GetTime()) ;
189 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
190 Digitize(hit->GetEnergy()), hit->GetTime()) ;
199 nSdigits = sdigits->GetEntriesFast() ;
201 fSDigitsInRun += nSdigits ;
202 sdigits->Expand(nSdigits) ;
205 for (i = 0 ; i < nSdigits ; i++) {
206 AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
207 digit->SetIndexInList(i) ;
213 //First list of sdigits
215 Int_t bufferSize = 32000 ;
216 TBranch * sdigitsBranch = treeS->Branch("PHOS",&sdigits,bufferSize);
218 sdigitsBranch->Fill() ;
220 gime->WriteSDigits("OVERWRITE");
224 gime->WriteSDigitizer("OVERWRITE");
226 if(strstr(option,"deb"))
227 PrintSDigits(option) ;
232 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
234 if(strstr(option,"tim")){
235 gBenchmark->Stop("PHOSSDigitizer");
236 Info("Exec"," took %f seconds for SDigitizing %f seconds per event",
237 gBenchmark->GetCpuTime("PHOSSDigitizer"), gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents) ;
241 //__________________________________________________________________
242 void AliPHOSSDigitizer::Print()const
244 // Prints parameters of SDigitizer
245 Info("Print", "\n------------------- %s -------------", GetName() ) ;
246 printf(" Writing SDigits to branch with title %s\n", fEventFolderName.Data()) ;
247 printf(" with digitization parameters A = %f\n", fA) ;
248 printf(" B = %f\n", fB) ;
249 printf(" Threshold for Primary assignment= %f\n", fPrimThreshold) ;
250 printf("---------------------------------------------------\n") ;
254 //__________________________________________________________________
255 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
258 // SDititizers are equal if their pedestal, slope and threshold are equal
260 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
266 //__________________________________________________________________
267 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
269 // Prints list of digits produced in the current pass of AliPHOSDigitizer
272 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
273 const TClonesArray * sdigits = gime->SDigits() ;
276 message = "\nAliPHOSSDigitiser: event " ;
277 message += gAlice->GetEvNumber();
278 message += "\n Number of entries in SDigits list " ;
279 message += sdigits->GetEntriesFast() ;
280 char * tempo = new char[8192];
282 if(strstr(option,"all")||strstr(option,"EMC")){
285 AliPHOSDigit * digit;
286 message += "\nEMC sdigits\n" ;
287 message += "\n Id Amplitude Time Index Nprim: Primaries list \n" ;
288 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
290 for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
291 ((dynamic_cast<AliPHOSDigit *> (sdigits->At(index)))->GetId() <= maxEmc) ; index++) {
292 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
293 if(digit->GetNprimary() == 0)
295 sprintf(tempo, "\n%6d %8d %6.5e %4d %2d :",
296 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
299 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
300 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
306 if(strstr(option,"all")||strstr(option,"CPV")){
308 //loop over CPV digits
309 AliPHOSDigit * digit;
311 message += "CPV sdigits\n" ;
312 message += "\n Id Amplitude Index Nprim: Primaries list \n" ;
313 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
315 for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
316 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
317 if(digit->GetId() > maxEmc){
318 sprintf(tempo, "\n%6d %8d %4d %2d :",
319 digit->GetId(), digit->GetAmp(), digit->GetIndexInList(), digit->GetNprimary()) ;
322 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
323 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
330 Info("PrintSDigits", message.Data() ) ;
333 //____________________________________________________________________________
334 void AliPHOSSDigitizer::Unload() const
336 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
337 AliPHOSLoader * loader = gime->PhosLoader() ;
338 loader->UnloadHits() ;
339 loader->UnloadSDigits() ;