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 ---
54 #include "TBenchmark.h"
57 // --- Standard library ---
59 // --- AliRoot header files ---
60 #include "AliPHOSGeometry.h"
61 #include "AliPHOSDigit.h"
62 #include "AliPHOSGetter.h"
63 #include "AliPHOSHit.h"
64 #include "AliPHOSSDigitizer.h"
66 ClassImp(AliPHOSSDigitizer)
69 //____________________________________________________________________________
70 AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","")
74 fDefaultInit = kTRUE ;
77 //____________________________________________________________________________
78 AliPHOSSDigitizer::AliPHOSSDigitizer(const char * alirunFileName, const char * eventFolderName):
79 TTask("PHOS"+AliConfig::fgkSDigitizerTaskName, alirunFileName),
80 fEventFolderName(eventFolderName)
86 fDefaultInit = kFALSE ;
89 //____________________________________________________________________________
90 AliPHOSSDigitizer::AliPHOSSDigitizer(const AliPHOSSDigitizer & sd)
97 fPrimThreshold = sd.fPrimThreshold ;
98 fSDigitsInRun = sd.fSDigitsInRun ;
99 SetName(sd.GetName()) ;
100 SetTitle(sd.GetTitle()) ;
101 fEventFolderName = sd.fEventFolderName;
105 //____________________________________________________________________________
106 void AliPHOSSDigitizer::Init()
108 // Uses the getter to access the required files
112 AliPHOSGetter * gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data());
114 Fatal("Init" ,"Could not obtain the Getter object for file %s and event %s !", GetTitle(), fEventFolderName.Data()) ;
118 TString opt("SDigits") ;
119 if(gime->VersionExists(opt) ) {
120 Error( "Init", "Give a version name different from %s", fEventFolderName.Data() ) ;
124 gime->PostSDigitizer(this);
125 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
129 //____________________________________________________________________________
130 void AliPHOSSDigitizer::InitParameters()
132 // initializes the parameters for digitization
135 fPrimThreshold = 0.01 ;
139 //____________________________________________________________________________
140 void AliPHOSSDigitizer::Exec(Option_t *option)
142 // Collects all hits in the same active volume into digit
144 if (strstr(option, "print") ) {
149 if(strstr(option,"tim"))
150 gBenchmark->Start("PHOSSDigitizer");
152 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
154 //switch off reloading of this task while getting event
155 if (!fInit) { // to prevent overwrite existing file
156 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
161 Int_t nevents = gime->MaxEvent() ;
163 for(ievent = 0; ievent < nevents; ievent++){
165 gime->Event(ievent,"H") ;
167 TTree * treeS = gime->TreeS();
168 TClonesArray * hits = gime->Hits() ;
169 TClonesArray * sdigits = gime->SDigits() ;
172 //Now make SDigits from hits, for PHOS it is the same, so just copy
173 Int_t nPrim = static_cast<Int_t>((gime->TreeH())->GetEntries()) ;
174 // Attention nPrim is the number of primaries tracked by Geant
175 // and this number could be different to the number of Primaries in TreeK;
178 for (iprim = 0 ; iprim < nPrim ; iprim ++) {
179 //=========== Get the PHOS branch from Hits Tree for the Primary iprim
182 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
183 AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
184 // Assign primary number only if contribution is significant
186 if( hit->GetEnergy() > fPrimThreshold)
187 new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
188 Digitize(hit->GetEnergy()), hit->GetTime()) ;
190 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
191 Digitize(hit->GetEnergy()), hit->GetTime()) ;
200 nSdigits = sdigits->GetEntriesFast() ;
202 fSDigitsInRun += nSdigits ;
203 sdigits->Expand(nSdigits) ;
206 for (i = 0 ; i < nSdigits ; i++) {
207 AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
208 digit->SetIndexInList(i) ;
214 //First list of sdigits
216 Int_t bufferSize = 32000 ;
217 TBranch * sdigitsBranch = treeS->Branch("PHOS",&sdigits,bufferSize);
219 sdigitsBranch->Fill() ;
221 gime->WriteSDigits("OVERWRITE");
225 gime->WriteSDigitizer("OVERWRITE");
227 if(strstr(option,"deb"))
228 PrintSDigits(option) ;
233 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
235 if(strstr(option,"tim")){
236 gBenchmark->Stop("PHOSSDigitizer");
237 Info("Exec"," took %f seconds for SDigitizing %f seconds per event",
238 gBenchmark->GetCpuTime("PHOSSDigitizer"), gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents) ;
242 //__________________________________________________________________
243 void AliPHOSSDigitizer::Print()const
245 // Prints parameters of SDigitizer
246 Info("Print", "\n------------------- %s -------------", GetName() ) ;
247 printf(" Writing SDigits to branch with title %s\n", fEventFolderName.Data()) ;
248 printf(" with digitization parameters A = %f\n", fA) ;
249 printf(" B = %f\n", fB) ;
250 printf(" Threshold for Primary assignment= %f\n", fPrimThreshold) ;
251 printf("---------------------------------------------------\n") ;
255 //__________________________________________________________________
256 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
259 // SDititizers are equal if their pedestal, slope and threshold are equal
261 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
267 //__________________________________________________________________
268 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
270 // Prints list of digits produced in the current pass of AliPHOSDigitizer
273 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
274 const TClonesArray * sdigits = gime->SDigits() ;
277 message = "\nAliPHOSSDigitiser: event " ;
278 message += gAlice->GetEvNumber();
279 message += "\n Number of entries in SDigits list " ;
280 message += sdigits->GetEntriesFast() ;
281 char * tempo = new char[8192];
283 if(strstr(option,"all")||strstr(option,"EMC")){
286 AliPHOSDigit * digit;
287 message += "\nEMC sdigits\n" ;
288 message += "\n Id Amplitude Time Index Nprim: Primaries list \n" ;
289 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
291 for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
292 ((dynamic_cast<AliPHOSDigit *> (sdigits->At(index)))->GetId() <= maxEmc) ; index++) {
293 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
294 if(digit->GetNprimary() == 0)
296 sprintf(tempo, "\n%6d %8d %6.5e %4d %2d :",
297 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
300 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
301 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
307 if(strstr(option,"all")||strstr(option,"CPV")){
309 //loop over CPV digits
310 AliPHOSDigit * digit;
312 message += "CPV sdigits\n" ;
313 message += "\n Id Amplitude Index Nprim: Primaries list \n" ;
314 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
316 for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
317 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
318 if(digit->GetId() > maxEmc){
319 sprintf(tempo, "\n%6d %8d %4d %2d :",
320 digit->GetId(), digit->GetAmp(), digit->GetIndexInList(), digit->GetNprimary()) ;
323 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
324 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
331 Info("PrintSDigits", message.Data() ) ;
334 //____________________________________________________________________________
335 void AliPHOSSDigitizer::Unload() const
337 // Unloads the objects from the folder
338 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
339 AliPHOSLoader * loader = gime->PhosLoader() ;
340 loader->UnloadHits() ;
341 loader->UnloadSDigits() ;