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)
98 fPrimThreshold = sd.fPrimThreshold ;
99 fSDigitsInRun = sd.fSDigitsInRun ;
100 SetName(sd.GetName()) ;
101 SetTitle(sd.GetTitle()) ;
102 fEventFolderName = sd.fEventFolderName;
106 //____________________________________________________________________________
107 void AliPHOSSDigitizer::Init()
109 // Uses the getter to access the required files
113 AliPHOSGetter * gime = AliPHOSGetter::Instance(GetTitle(), fEventFolderName.Data());
115 Fatal("Init" ,"Could not obtain the Getter object for file %s and event %s !", GetTitle(), fEventFolderName.Data()) ;
119 TString opt("SDigits") ;
120 if(gime->VersionExists(opt) ) {
121 Error( "Init", "Give a version name different from %s", fEventFolderName.Data() ) ;
125 gime->PostSDigitizer(this);
126 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
130 //____________________________________________________________________________
131 void AliPHOSSDigitizer::InitParameters()
133 // initializes the parameters for digitization
136 fPrimThreshold = 0.01 ;
140 //____________________________________________________________________________
141 void AliPHOSSDigitizer::Exec(Option_t *option)
143 // Collects all hits in the same active volume into digit
145 if (strstr(option, "print") ) {
150 if(strstr(option,"tim"))
151 gBenchmark->Start("PHOSSDigitizer");
153 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
155 //switch off reloading of this task while getting event
156 if (!fInit) { // to prevent overwrite existing file
157 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
162 Int_t nevents = gime->MaxEvent() ;
164 for(ievent = 0; ievent < nevents; ievent++){
166 gime->Event(ievent,"H") ;
168 TTree * treeS = gime->TreeS();
169 TClonesArray * hits = gime->Hits() ;
170 TClonesArray * sdigits = gime->SDigits() ;
173 //Now make SDigits from hits, for PHOS it is the same, so just copy
174 Int_t nPrim = static_cast<Int_t>((gime->TreeH())->GetEntries()) ;
175 // Attention nPrim is the number of primaries tracked by Geant
176 // and this number could be different to the number of Primaries in TreeK;
179 for (iprim = 0 ; iprim < nPrim ; iprim ++) {
180 //=========== Get the PHOS branch from Hits Tree for the Primary iprim
183 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
184 AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
185 // Assign primary number only if contribution is significant
187 if( hit->GetEnergy() > fPrimThreshold)
188 new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
189 Digitize(hit->GetEnergy()), hit->GetTime()) ;
191 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
192 Digitize(hit->GetEnergy()), hit->GetTime()) ;
201 nSdigits = sdigits->GetEntriesFast() ;
203 fSDigitsInRun += nSdigits ;
204 sdigits->Expand(nSdigits) ;
207 for (i = 0 ; i < nSdigits ; i++) {
208 AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
209 digit->SetIndexInList(i) ;
215 //First list of sdigits
217 Int_t bufferSize = 32000 ;
218 TBranch * sdigitsBranch = treeS->Branch("PHOS",&sdigits,bufferSize);
220 sdigitsBranch->Fill() ;
222 gime->WriteSDigits("OVERWRITE");
226 gime->WriteSDigitizer("OVERWRITE");
228 if(strstr(option,"deb"))
229 PrintSDigits(option) ;
234 gime->PhosLoader()->GetSDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
236 if(strstr(option,"tim")){
237 gBenchmark->Stop("PHOSSDigitizer");
238 Info("Exec"," took %f seconds for SDigitizing %f seconds per event",
239 gBenchmark->GetCpuTime("PHOSSDigitizer"), gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents) ;
243 //__________________________________________________________________
244 void AliPHOSSDigitizer::Print()const
246 // Prints parameters of SDigitizer
247 Info("Print", "\n------------------- %s -------------", GetName() ) ;
248 printf(" Writing SDigits to branch with title %s\n", fEventFolderName.Data()) ;
249 printf(" with digitization parameters A = %f\n", fA) ;
250 printf(" B = %f\n", fB) ;
251 printf(" Threshold for Primary assignment= %f\n", fPrimThreshold) ;
252 printf("---------------------------------------------------\n") ;
256 //__________________________________________________________________
257 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
260 // SDititizers are equal if their pedestal, slope and threshold are equal
262 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
268 //__________________________________________________________________
269 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
271 // Prints list of digits produced in the current pass of AliPHOSDigitizer
274 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
275 const TClonesArray * sdigits = gime->SDigits() ;
278 message = "\nAliPHOSSDigitiser: event " ;
279 message += gAlice->GetEvNumber();
280 message += "\n Number of entries in SDigits list " ;
281 message += sdigits->GetEntriesFast() ;
282 char * tempo = new char[8192];
284 if(strstr(option,"all")||strstr(option,"EMC")){
287 AliPHOSDigit * digit;
288 message += "\nEMC sdigits\n" ;
289 message += "\n Id Amplitude Time Index Nprim: Primaries list \n" ;
290 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
292 for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
293 ((dynamic_cast<AliPHOSDigit *> (sdigits->At(index)))->GetId() <= maxEmc) ; index++) {
294 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
295 if(digit->GetNprimary() == 0)
297 sprintf(tempo, "\n%6d %8d %6.5e %4d %2d :",
298 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
301 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
302 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
308 if(strstr(option,"all")||strstr(option,"CPV")){
310 //loop over CPV digits
311 AliPHOSDigit * digit;
313 message += "CPV sdigits\n" ;
314 message += "\n Id Amplitude Index Nprim: Primaries list \n" ;
315 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
317 for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
318 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
319 if(digit->GetId() > maxEmc){
320 sprintf(tempo, "\n%6d %8d %4d %2d :",
321 digit->GetId(), digit->GetAmp(), digit->GetIndexInList(), digit->GetNprimary()) ;
324 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
325 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
332 Info("PrintSDigits", message.Data() ) ;
335 //____________________________________________________________________________
336 void AliPHOSSDigitizer::Unload() const
338 AliPHOSGetter * gime = AliPHOSGetter::Instance() ;
339 AliPHOSLoader * loader = gime->PhosLoader() ;
340 loader->UnloadHits() ;
341 loader->UnloadSDigits() ;