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 ;
83 //____________________________________________________________________________
84 AliPHOSSDigitizer::AliPHOSSDigitizer(const char * headerFile, const char * sDigitsTitle):TTask(sDigitsTitle, headerFile)
89 fPrimThreshold = 0.01 ;
94 //____________________________________________________________________________
95 void AliPHOSSDigitizer::Init()
97 // Initialization: open root-file, allocate arrays for hits and sdigits,
98 // attach task SDigitizer to the list of PHOS tasks
100 // Initialization can not be done in the default constructor
101 //============================================================= YS
102 // The initialisation is now done by AliPHOSGetter
104 if( strcmp(GetTitle(), "") == 0 )
105 SetTitle("galice.root") ;
107 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;
109 cerr << "ERROR: AliPHOSSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
113 //add Task to //YSAlice/tasks/SDiditizer/PHOS
114 TTask * aliceSD = (TTask*)gROOT->FindObjectAny("YSAlice/tasks/SDigitizer") ;
115 TTask * phosSD = (TTask*)aliceSD->GetListOfTasks()->FindObject("PHOS") ;
116 if ( ! phosSD->GetListOfTasks()->FindObject(GetName()) )
118 // create a folder on the white board //YSAlice/WhiteBoard/SDigits/PHOS/headerFile/sdigitsTitle
119 gime->Post(GetTitle(), "S", GetName() ) ;
123 //____________________________________________________________________________
124 void AliPHOSSDigitizer::Exec(Option_t *option)
126 // Collects all hits in the same active volume into digit
127 if( strcmp(GetName(), "") == 0 )
130 if (strstr(option, "print") ) {
135 if(strstr(option,"tim"))
136 gBenchmark->Start("PHOSSDigitizer");
138 //Check, if this branch already exits
139 TObjArray * lob = (TObjArray*)gAlice->TreeS()->GetListOfBranches() ;
141 TBranch * branch = 0 ;
142 Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
144 while ( (branch = (TBranch*)next()) && (!phosfound || !sdigitizerfound) ) {
145 if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
148 else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
149 sdigitizerfound = kTRUE ;
152 if ( phosfound || sdigitizerfound ) {
153 cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
154 << " already exits" << endl ;
159 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
161 TClonesArray * hits = gime->Hits() ;
163 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
166 for(ievent = 0; ievent < nevents; ievent++){
167 gAlice->GetEvent(ievent) ;
168 gAlice->SetEvent(ievent) ;
170 if(gAlice->TreeH()==0){
171 cerr << "ERROR: AliPHOSSDigitizer::Exec There is no Hit Tree" << endl;
175 //set address of the hits
176 TBranch * branch = gAlice->TreeH()->GetBranch("PHOS");
178 branch->SetAddress(&hits);
180 cerr << "ERROR: AliPHOSSDigitizer::Exec -> No branch PHOS in TreeH " << endl ;
181 cerr << " Do nothing " << endl ;
185 TClonesArray * sdigits = gime->SDigits(GetName()) ;
191 //Now make SDigits from hits, for PHOS it is the same, so just copy
193 for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
195 //=========== Get the PHOS branch from Hits Tree for the Primary track itrack
196 branch->GetEntry(itrack,0);
198 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
199 const AliPHOSHit * hit = gime->Hit(i) ;
200 // Assign primary number only if contribution is significant
202 if( hit->GetEnergy() > fPrimThreshold)
203 new((*sdigits)[nSdigits]) AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
205 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
211 } // loop over tracks
215 nSdigits = sdigits->GetEntriesFast() ;
216 sdigits->Expand(nSdigits) ;
218 for (i = 0 ; i < nSdigits ; i++) {
219 AliPHOSDigit * digit = (AliPHOSDigit *) sdigits->At(i) ;
220 digit->SetIndexInList(i) ;
223 if(gAlice->TreeS() == 0)
224 gAlice->MakeTree("S") ;
226 //Make (if necessary) branches
228 if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
229 file = new char[strlen(gAlice->GetBaseFile())+20] ;
230 sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
233 TDirectory *cwd = gDirectory;
235 //First list of sdigits
236 Int_t bufferSize = 32000 ;
237 TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
238 sdigitsBranch->SetTitle(GetName());
240 sdigitsBranch->SetFile(file);
241 TIter next( sdigitsBranch->GetListOfBranches());
243 while ((subbr=(TBranch*)next())) {
244 subbr->SetFile(file);
250 Int_t splitlevel = 0 ;
251 AliPHOSSDigitizer * sd = this ;
252 TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
253 &sd,bufferSize,splitlevel);
254 sdigitizerBranch->SetTitle(GetName());
256 sdigitizerBranch->SetFile(file);
257 TIter next( sdigitizerBranch->GetListOfBranches());
259 while ((subbr=(TBranch*)next())) {
260 subbr->SetFile(file);
266 sdigitsBranch->Fill() ;
267 sdigitizerBranch->Fill() ;
268 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
270 if(strstr(option,"deb"))
271 PrintSDigits(option) ;
275 if(strstr(option,"tim")){
276 gBenchmark->Stop("PHOSSDigitizer");
277 cout << "AliPHOSSDigitizer:" << endl ;
278 cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
279 << gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
285 //__________________________________________________________________
286 void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
288 // Setting title to branch SDigits
290 TString stitle(title) ;
292 // check if branch with title already exists
293 TBranch * sdigitsBranch = (TBranch*)gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS") ;
294 TBranch * sdigitizerBranch = (TBranch*)gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer") ;
295 const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
296 const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
297 if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
298 cerr << "ERROR: AliPHOSSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
302 cout << "AliPHOSSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
306 // Post to the WhiteBoard
307 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
308 gime->Post(GetTitle(), "S", GetName()) ;
311 //__________________________________________________________________
312 void AliPHOSSDigitizer::Print(Option_t* option)const
314 // Prints parameters of SDigitizer
315 cout << "------------------- "<< GetName() << " -------------" << endl ;
316 cout << " Writing SDigitis to branch with title " << GetName() << endl ;
317 cout << " with digitization parameters A = " << fA << endl ;
318 cout << " B = " << fB << endl ;
319 cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
320 cout << "---------------------------------------------------"<<endl ;
323 //__________________________________________________________________
324 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
327 // SDititizers are equal if their pedestal, slope and threshold are equal
329 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
334 //__________________________________________________________________
335 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
337 // Prints list of digits produced in the current pass of AliPHOSDigitizer
339 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
340 TClonesArray * sdigits = gime->SDigits(GetName()) ;
342 cout << "AliPHOSSDigitizer: " << endl ;
343 cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
346 if(strstr(option,"all")){// print all digits
349 AliPHOSDigit * digit;
350 cout << "SDigit Id " << " Amplitude " << " Index " << " Nprim " << " Primaries list " << endl;
352 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
353 digit = (AliPHOSDigit * ) sdigits->At(index) ;
354 cout << setw(8) << digit->GetId() << " " << setw(3) << digit->GetAmp() << " "
355 << setw(6) << digit->GetIndexInList() << " "
356 << setw(5) << digit->GetNprimary() <<" ";
359 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
360 cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
367 //____________________________________________________________________________
368 void AliPHOSSDigitizer::UseHitsFrom(const char * filename)