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 //add Task to //YSAlice/tasks/SDiditizer/PHOS
116 TTask * aliceSD = (TTask*)gROOT->FindObjectAny("YSAlice/tasks/SDigitizer") ;
117 TTask * phosSD = (TTask*)aliceSD->GetListOfTasks()->FindObject("PHOS") ;
118 if ( ! phosSD->GetListOfTasks()->FindObject(GetName()) )
120 // create a folder on the white board //YSAlice/WhiteBoard/SDigits/PHOS/headerFile/sdigitsTitle
121 gime->Post(GetTitle(), "S", GetName() ) ;
125 //____________________________________________________________________________
126 void AliPHOSSDigitizer::Exec(Option_t *option)
128 // Collects all hits in the same active volume into digit
129 if( strcmp(GetName(), "") == 0 )
132 if (strstr(option, "print") ) {
137 if(strstr(option,"tim"))
138 gBenchmark->Start("PHOSSDigitizer");
140 //Check, if this branch already exits
141 TObjArray * lob = (TObjArray*)gAlice->TreeS()->GetListOfBranches() ;
143 TBranch * branch = 0 ;
144 Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
146 while ( (branch = (TBranch*)next()) && (!phosfound || !sdigitizerfound) ) {
147 if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
150 else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
151 sdigitizerfound = kTRUE ;
154 if ( phosfound || sdigitizerfound ) {
155 cerr << "WARNING: AliPHOSSDigitizer::Exec -> SDigits and/or SDigitizer branch with name " << GetName()
156 << " already exits" << endl ;
161 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
163 TClonesArray * hits = gime->Hits() ;
165 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
168 for(ievent = 0; ievent < nevents; ievent++){
169 gAlice->GetEvent(ievent) ;
170 gAlice->SetEvent(ievent) ;
172 if(gAlice->TreeH()==0){
173 cerr << "ERROR: AliPHOSSDigitizer::Exec There is no Hit Tree" << endl;
177 //set address of the hits
178 TBranch * branch = gAlice->TreeH()->GetBranch("PHOS");
180 branch->SetAddress(&hits);
182 cerr << "ERROR: AliPHOSSDigitizer::Exec -> No branch PHOS in TreeH " << endl ;
183 cerr << " Do nothing " << endl ;
187 TClonesArray * sdigits = gime->SDigits(GetName()) ;
193 //Now make SDigits from hits, for PHOS it is the same, so just copy
195 for (itrack=0; itrack < gAlice->GetNtrack(); itrack++){
197 //=========== Get the PHOS branch from Hits Tree for the Primary track itrack
198 branch->GetEntry(itrack,0);
200 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
201 const AliPHOSHit * hit = gime->Hit(i) ;
202 // Assign primary number only if contribution is significant
204 if( hit->GetEnergy() > fPrimThreshold)
205 new((*sdigits)[nSdigits]) AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
207 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
213 } // loop over tracks
217 nSdigits = sdigits->GetEntriesFast() ;
218 sdigits->Expand(nSdigits) ;
220 for (i = 0 ; i < nSdigits ; i++) {
221 AliPHOSDigit * digit = (AliPHOSDigit *) sdigits->At(i) ;
222 digit->SetIndexInList(i) ;
225 if(gAlice->TreeS() == 0)
226 gAlice->MakeTree("S") ;
228 //Make (if necessary) branches
230 if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
231 file = new char[strlen(gAlice->GetBaseFile())+20] ;
232 sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
235 TDirectory *cwd = gDirectory;
237 //First list of sdigits
238 Int_t bufferSize = 32000 ;
239 TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
240 sdigitsBranch->SetTitle(GetName());
242 sdigitsBranch->SetFile(file);
243 TIter next( sdigitsBranch->GetListOfBranches());
245 while ((subbr=(TBranch*)next())) {
246 subbr->SetFile(file);
252 Int_t splitlevel = 0 ;
253 AliPHOSSDigitizer * sd = this ;
254 TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
255 &sd,bufferSize,splitlevel);
256 sdigitizerBranch->SetTitle(GetName());
258 sdigitizerBranch->SetFile(file);
259 TIter next( sdigitizerBranch->GetListOfBranches());
261 while ((subbr=(TBranch*)next())) {
262 subbr->SetFile(file);
268 sdigitsBranch->Fill() ;
269 sdigitizerBranch->Fill() ;
270 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
272 if(strstr(option,"deb"))
273 PrintSDigits(option) ;
277 if(strstr(option,"tim")){
278 gBenchmark->Stop("PHOSSDigitizer");
279 cout << "AliPHOSSDigitizer:" << endl ;
280 cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
281 << gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents << " seconds per event " << endl ;
287 //__________________________________________________________________
288 void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
290 // Setting title to branch SDigits
292 TString stitle(title) ;
294 // check if branch with title already exists
295 TBranch * sdigitsBranch = (TBranch*)gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS") ;
296 TBranch * sdigitizerBranch = (TBranch*)gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer") ;
297 const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
298 const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
299 if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
300 cerr << "ERROR: AliPHOSSdigitizer::SetSDigitsBranch -> Cannot overwrite existing branch with title " << title << endl ;
304 cout << "AliPHOSSdigitizer::SetSDigitsBranch -> Changing SDigits file from " << GetName() << " to " << title << endl ;
308 // Post to the WhiteBoard
309 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
310 gime->Post(GetTitle(), "S", GetName()) ;
313 //__________________________________________________________________
314 void AliPHOSSDigitizer::Print(Option_t* option)const
316 // Prints parameters of SDigitizer
317 cout << "------------------- "<< GetName() << " -------------" << endl ;
318 cout << " Writing SDigitis to branch with title " << GetName() << endl ;
319 cout << " with digitization parameters A = " << fA << endl ;
320 cout << " B = " << fB << endl ;
321 cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
322 cout << "---------------------------------------------------"<<endl ;
325 //__________________________________________________________________
326 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
329 // SDititizers are equal if their pedestal, slope and threshold are equal
331 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
336 //__________________________________________________________________
337 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
339 // Prints list of digits produced in the current pass of AliPHOSDigitizer
341 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
342 TClonesArray * sdigits = gime->SDigits(GetName()) ;
344 cout << "AliPHOSSDigitizer: event "<<gAlice->GetEvNumber() << endl ;
345 cout << " Number of entries in SDigits list " << sdigits->GetEntriesFast() << endl ;
348 fSDigitsInRun += sdigits->GetEntriesFast() ;
350 if(strstr(option,"all")){// print all digits
353 AliPHOSDigit * digit;
354 cout << "SDigit Id " << " Amplitude " << " Index " << " Nprim " << " Primaries list " << endl;
356 for (index = 0 ; index < sdigits->GetEntries() ; index++) {
357 digit = (AliPHOSDigit * ) sdigits->At(index) ;
358 cout << setw(8) << digit->GetId() << " " << setw(3) << digit->GetAmp() << " "
359 << setw(6) << digit->GetIndexInList() << " "
360 << setw(5) << digit->GetNprimary() <<" ";
363 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
364 cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
371 //____________________________________________________________________________
372 void AliPHOSSDigitizer::UseHitsFrom(const char * filename)