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 // The name of the TTask is also the title of the branch that will contain
21 // the created SDigits
22 // The title of the TTAsk is the name of the file that contains the hits from
23 // which the SDigits are created
24 // A Summable Digits is the sum of all hits originating
25 // from one primary in one active cell
26 // A threshold for assignment of the primary to SDigit is applied
27 // SDigits are written to TreeS, branch "PHOS"
28 // AliPHOSSDigitizer with all current parameters is written
29 // to TreeS branch "AliPHOSSDigitizer".
30 // Both branches have the same title. If necessary one can produce
31 // another set of SDigits with different parameters. Two versions
32 // can be distunguished using titles of the branches.
34 // root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
35 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
36 // root [1] s->ExecuteTask()
37 // // Makes SDigitis for all events stored in galice.root
38 // root [2] s->SetPedestalParameter(0.001)
39 // // One can change parameters of digitization
40 // root [3] s->SetSDigitsBranch("Pedestal 0.001")
41 // // and write them into the new branch
42 // root [4] s->ExecuteTask("deb all tim")
43 // // available parameters:
44 // deb - print # of produced SDigitis
45 // deb all - print # and list of produced SDigits
46 // tim - print benchmarking information
48 //*-- Author : Dmitri Peressounko (SUBATECH & KI)
49 //////////////////////////////////////////////////////////////////////////////
52 // --- ROOT system ---
59 #include "TBenchmark.h"
60 // --- Standard library ---
63 // --- AliRoot header files ---
65 #include "AliPHOSDigit.h"
66 #include "AliPHOSGetter.h"
67 #include "AliPHOSHit.h"
68 #include "AliPHOSSDigitizer.h"
71 ClassImp(AliPHOSSDigitizer)
74 //____________________________________________________________________________
75 AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("","")
80 fPrimThreshold = 0.01 ;
84 //____________________________________________________________________________
85 AliPHOSSDigitizer::AliPHOSSDigitizer(const char * headerFile, const char * sDigitsTitle):TTask(sDigitsTitle, headerFile)
90 fPrimThreshold = 0.01 ;
96 //____________________________________________________________________________
97 void AliPHOSSDigitizer::Init()
99 // Initialization: open root-file, allocate arrays for hits and sdigits,
100 // attach task SDigitizer to the list of PHOS tasks
102 // Initialization can not be done in the default constructor
103 //============================================================= YS
104 // The initialisation is now done by AliPHOSGetter
106 if( strcmp(GetTitle(), "") == 0 )
107 SetTitle("galice.root") ;
109 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;
111 cerr << "ERROR: AliPHOSSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
115 gime->PostSDigits( GetName(), GetTitle() ) ;
117 TString sdname(GetName() );
119 sdname.Append(GetTitle() ) ;
121 gime->PostSDigitizer(this) ;
123 // create a folder on the white board //YSAlice/WhiteBoard/SDigits/PHOS/headerFile/sdigitsTitle
127 //____________________________________________________________________________
128 void AliPHOSSDigitizer::Exec(Option_t *option)
130 // Collects all hits in the same active volume into digit
131 if( strcmp(GetName(), "") == 0 )
134 if (strstr(option, "print") ) {
139 if(strstr(option,"tim"))
140 gBenchmark->Start("PHOSSDigitizer");
142 //Check, if this branch already exits
143 gAlice->GetEvent(0) ;
144 if(gAlice->TreeS() ) {
145 TObjArray * lob = static_cast<TObjArray*>(gAlice->TreeS()->GetListOfBranches()) ;
147 TBranch * branch = 0 ;
148 Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
150 while ( (branch = (static_cast<TBranch*>(next()))) && (!phosfound || !sdigitizerfound) ) {
151 if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
154 else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
155 sdigitizerfound = kTRUE ;
158 if ( phosfound || sdigitizerfound ) {
159 cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
160 << " already exits" << endl ;
165 TString sdname(GetName()) ;
166 sdname.Remove(sdname.Index(GetTitle())-1) ;
168 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
170 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
173 for(ievent = 0; ievent < nevents; ievent++){
174 gime->Event(ievent,"H") ;
176 TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
181 //Now make SDigits from hits, for PHOS it is the same, so just copy
183 for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
185 //=========== Get the PHOS branch from Hits Tree for the Primary track itrack
186 gime->Track(itrack) ;
187 TClonesArray * hits = gime->Hits() ;
189 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
190 AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
191 // Assign primary number only if contribution is significant
193 if( hit->GetEnergy() > fPrimThreshold)
194 new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
195 Digitize(hit->GetEnergy()), hit->GetTime()) ;
197 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
198 Digitize(hit->GetEnergy()), hit->GetTime()) ;
202 } // loop over tracks
206 nSdigits = sdigits->GetEntriesFast() ;
208 sdigits->Expand(nSdigits) ;
210 for (i = 0 ; i < nSdigits ; i++) {
211 AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
212 digit->SetIndexInList(i) ;
215 if(gAlice->TreeS() == 0)
216 gAlice->MakeTree("S") ;
218 //Make (if necessary) branches
220 if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
221 file = new char[strlen(gAlice->GetBaseFile())+20] ;
222 sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
225 TDirectory *cwd = gDirectory;
227 //First list of sdigits
228 Int_t bufferSize = 32000 ;
229 TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
230 sdigitsBranch->SetTitle(sdname);
232 sdigitsBranch->SetFile(file);
233 TIter next( sdigitsBranch->GetListOfBranches());
235 while ((subbr=static_cast<TBranch*>(next()))) {
236 subbr->SetFile(file);
242 Int_t splitlevel = 0 ;
243 AliPHOSSDigitizer * sd = this ;
244 TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
245 &sd,bufferSize,splitlevel);
246 sdigitizerBranch->SetTitle(sdname);
248 sdigitizerBranch->SetFile(file);
249 TIter next( sdigitizerBranch->GetListOfBranches());
251 while ((subbr=static_cast<TBranch*>(next()))) {
252 subbr->SetFile(file);
258 sdigitsBranch->Fill() ;
259 sdigitizerBranch->Fill() ;
260 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
262 if(strstr(option,"deb"))
263 PrintSDigits(option) ;
267 if(strstr(option,"tim")){
268 gBenchmark->Stop("PHOSSDigitizer");
269 cout << "AliPHOSSDigitizer:" << endl ;
270 cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
271 << gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
277 //__________________________________________________________________
278 void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
280 // Setting title to branch SDigits
282 TString stitle(title) ;
284 // check if branch with title already exists
285 TBranch * sdigitsBranch =
286 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS")) ;
287 TBranch * sdigitizerBranch =
288 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer")) ;
289 const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
290 const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
291 if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
292 cerr << "ERROR: AliPHOSSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
296 cout << "AliPHOSSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
300 // Post to the WhiteBoard
301 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
302 gime->PostSDigits( title, GetTitle()) ;
305 //__________________________________________________________________
306 void AliPHOSSDigitizer::Print(Option_t* option)const
308 // Prints parameters of SDigitizer
309 cout << "------------------- "<< GetName() << " -------------" << endl ;
310 cout << " Writing SDigits to branch with title " << GetName() << endl ;
311 cout << " with digitization parameters A = " << fA << endl ;
312 cout << " B = " << fB << endl ;
313 cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
314 cout << "---------------------------------------------------"<<endl ;
317 //__________________________________________________________________
318 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
321 // SDititizers are equal if their pedestal, slope and threshold are equal
323 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
328 //__________________________________________________________________
329 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
331 // Prints list of digits produced in the current pass of AliPHOSDigitizer
333 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
334 TString sdname(GetName()) ;
335 sdname.Remove(sdname.Index(GetTitle())-1) ;
336 TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
338 cout << "AliPHOSSDigitizer: event "<<gAlice->GetEvNumber() << endl ;
339 cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
342 fSDigitsInRun += sdigits->GetEntriesFast() ;
344 if(strstr(option,"all")){// print all digits
347 AliPHOSDigit * digit;
348 cout << "SDigit Id " << " Amplitude " << " Index " << " Nprim " << " Primaries list " << endl;
350 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
351 digit = (AliPHOSDigit * ) sdigits->At(index) ;
352 cout << setw(8) << digit->GetId() << " " << setw(3) << digit->GetAmp() << " "
353 << setw(6) << digit->GetIndexInList() << " "
354 << setw(5) << digit->GetNprimary() <<" ";
357 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
358 cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
365 //____________________________________________________________________________
366 void AliPHOSSDigitizer::UseHitsFrom(const char * filename)