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 // A Summable Digits is the sum of all hits originating
21 // from one primary in one active cell
22 // A threshold for assignment of the primary to SDigit is applied
23 // SDigits are written to TreeS, branch "PHOS"
24 // AliPHOSSDigitizer with all current parameters is written
25 // to TreeS branch "AliPHOSSDigitizer".
26 // Both branches have the same title. If necessary one can produce
27 // another set of SDigits with different parameters. Two versions
28 // can be distunguished using titles of the branches.
30 // root [0] AliPHOSSDigitizer * s = new AliPHOSSDigitizer("galice.root")
31 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
32 // root [1] s->ExecuteTask()
33 // // Makes SDigitis for all events stored in galice.root
34 // root [2] s->SetPedestalParameter(0.001)
35 // // One can change parameters of digitization
36 // root [3] s->SetSDigitsBranch("Pedestal 0.001")
37 // // and write them into the new branch
38 // root [4] s->ExecuteTask("deb all tim")
39 // // available parameters:
40 // deb - print # of produced SDigitis
41 // deb all - print # and list of produced SDigits
42 // tim - print benchmarking information
44 //*-- Author : Dmitri Peressounko (SUBATECH & KI)
45 //////////////////////////////////////////////////////////////////////////////
48 // --- ROOT system ---
55 #include "TBenchmark.h"
56 // --- Standard library ---
59 // --- AliRoot header files ---
61 #include "AliPHOSDigit.h"
62 #include "AliPHOSHit.h"
63 #include "AliPHOSSDigitizer.h"
66 ClassImp(AliPHOSSDigitizer)
69 //____________________________________________________________________________
70 AliPHOSSDigitizer::AliPHOSSDigitizer():TTask("AliPHOSSDigitizer","")
75 fPrimThreshold = 0.01 ;
79 fIsInitialized = kFALSE ;
83 //____________________________________________________________________________
84 AliPHOSSDigitizer::AliPHOSSDigitizer(const char* headerFile, const char *sDigitsTitle):TTask("AliPHOSSDigitizer","")
89 fPrimThreshold = 0.01 ;
91 fSDigitsTitle = sDigitsTitle ;
92 fHeadersFile = headerFile ;
93 fSDigits = new TClonesArray("AliPHOSDigit",1000);
94 fHits = new TClonesArray("AliPHOSHit",1000);
96 TFile * file = (TFile*) gROOT->GetFile(fHeadersFile.Data() ) ;
98 //File was not opened yet
100 if(fHeadersFile.Contains("rfio"))
101 file = TFile::Open(fHeadersFile,"update") ;
103 file = new TFile(fHeadersFile.Data(),"update") ;
104 gAlice = (AliRun *) file->Get("gAlice") ;
107 //add Task to //root/Tasks folder
108 TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
109 TTask * phostasks = (TTask*)(roottasks->GetListOfTasks()->FindObject("PHOS"));
110 phostasks->Add(this) ;
112 fIsInitialized = kTRUE ;
115 //____________________________________________________________________________
116 AliPHOSSDigitizer::~AliPHOSSDigitizer()
124 //____________________________________________________________________________
125 void AliPHOSSDigitizer::Init()
127 // Initialization can not be done in the default constructor
131 if(fHeadersFile.IsNull())
132 fHeadersFile="galice.root" ;
134 TFile * file = (TFile*) gROOT->GetFile(fHeadersFile.Data() ) ;
136 //if file was not opened yet, read gAlice
138 file = new TFile(fHeadersFile.Data(),"update") ;
139 gAlice = (AliRun *) file->Get("gAlice") ;
142 fHits = new TClonesArray("AliPHOSHit",1000);
143 fSDigits = new TClonesArray("AliPHOSDigit",1000);
145 // add Task to //root/Tasks folder
146 TTask * roottasks = (TTask*)gROOT->GetRootFolder()->FindObject("Tasks") ;
147 TTask * phostasks = (TTask*)(roottasks->GetListOfTasks()->FindObject("PHOS"));
148 phostasks->Add(this) ;
150 fIsInitialized = kTRUE ;
153 //____________________________________________________________________________
154 void AliPHOSSDigitizer::Exec(Option_t *option)
156 // Collects all hits in the same active volume into digit
161 if(strstr(option,"tim"))
162 gBenchmark->Start("PHOSSDigitizer");
164 fNevents = (Int_t) gAlice->TreeE()->GetEntries() ;
167 for(ievent = 0; ievent < fNevents; ievent++){
168 gAlice->GetEvent(ievent) ;
169 gAlice->SetEvent(ievent) ;
171 if(gAlice->TreeH()==0){
172 cout << "AliPHOSSDigitizer: There is no Hit Tree" << endl;
176 //set address of the hits
177 TBranch * branch = gAlice->TreeH()->GetBranch("PHOS");
179 branch->SetAddress(&fHits);
181 cout << "ERROR in AliPHOSSDigitizer: "<< endl ;
182 cout << " no branch PHOS in TreeH"<< endl ;
183 cout << " do nothing " << endl ;
191 //Now made 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);
199 for ( i = 0 ; i < fHits->GetEntries() ; i++ ) {
200 AliPHOSHit * hit = (AliPHOSHit*)fHits->At(i) ;
202 // Assign primary number only if contribution is significant
203 if( hit->GetEnergy() > fPrimThreshold)
204 new((*fSDigits)[nSdigits]) AliPHOSDigit( hit->GetPrimary(), hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
206 new((*fSDigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(), Digitize( hit->GetEnergy() ) ) ;
212 } // loop over tracks
216 nSdigits = fSDigits->GetEntriesFast() ;
217 fSDigits->Expand(nSdigits) ;
220 for (i = 0 ; i < nSdigits ; i++) {
221 AliPHOSDigit * digit = (AliPHOSDigit *) fSDigits->At(i) ;
222 digit->SetIndexInList(i) ;
225 if(gAlice->TreeS() == 0)
226 gAlice->MakeTree("S") ;
228 //check, if this branch already exits?
229 TBranch * sdigitsBranch = 0;
230 TBranch * sdigitizerBranch = 0;
232 TObjArray * branches = gAlice->TreeS()->GetListOfBranches() ;
234 Bool_t phosNotFound = kTRUE ;
235 Bool_t sdigitizerNotFound = kTRUE ;
237 for(ibranch = 0;ibranch <branches->GetEntries();ibranch++){
240 sdigitsBranch=(TBranch *) branches->At(ibranch) ;
241 if( (strcmp("PHOS",sdigitsBranch->GetName())==0 ) &&
242 (fSDigitsTitle.CompareTo(sdigitsBranch->GetTitle()) == 0) )
243 phosNotFound = kFALSE ;
245 if(sdigitizerNotFound){
246 sdigitizerBranch = (TBranch *) branches->At(ibranch) ;
247 if( (strcmp(sdigitizerBranch->GetName(),"AliPHOSSDigitizer") == 0)&&
248 (fSDigitsTitle.CompareTo(sdigitizerBranch->GetTitle()) == 0) )
249 sdigitizerNotFound = kFALSE ;
253 if(!(sdigitizerNotFound && phosNotFound)){
254 cout << "AliPHOSSdigitizer error:" << endl ;
255 cout << "Can not overwrite existing branches: do not write" << endl ;
259 //Make (if necessary) branches
261 if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
262 file = new char[strlen(gAlice->GetBaseFile())+20] ;
263 sprintf(file,"%s/PHOS.SDigits.root",gAlice->GetBaseFile()) ;
266 TDirectory *cwd = gDirectory;
268 //First list of sdigits
269 Int_t bufferSize = 32000 ;
270 sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&fSDigits,bufferSize);
271 sdigitsBranch->SetTitle(fSDigitsTitle.Data());
273 sdigitsBranch->SetFile(file);
274 TIter next( sdigitsBranch->GetListOfBranches());
276 while ((subbr=(TBranch*)next())) {
277 subbr->SetFile(file);
282 //second - SDigitizer
283 Int_t splitlevel = 0 ;
284 AliPHOSSDigitizer * sd = this ;
285 sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
286 &sd,bufferSize,splitlevel);
287 sdigitizerBranch->SetTitle(fSDigitsTitle.Data());
289 sdigitizerBranch->SetFile(file);
290 TIter next( sdigitizerBranch->GetListOfBranches());
292 while ((subbr=(TBranch*)next())) {
293 subbr->SetFile(file);
299 sdigitsBranch->Fill() ;
300 sdigitizerBranch->Fill() ;
301 gAlice->TreeS()->Write(0,TObject::kOverwrite) ;
303 if(strstr(option,"deb"))
304 PrintSDigits(option) ;
308 if(strstr(option,"tim")){
309 gBenchmark->Stop("PHOSSDigitizer");
310 cout << "AliPHOSSDigitizer:" << endl ;
311 cout << " took " << gBenchmark->GetCpuTime("PHOSSDigitizer") << " seconds for SDigitizing "
312 << gBenchmark->GetCpuTime("PHOSSDigitizer")/fNevents << " seconds per event " << endl ;
318 //__________________________________________________________________
319 void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
321 // Setting title to branch SDigits
322 if(!fSDigitsTitle.IsNull())
323 cout << "AliPHOSSdigitizer: changing SDigits file from " <<fSDigitsTitle.Data() << " to " << title << endl ;
324 fSDigitsTitle=title ;
326 //__________________________________________________________________
327 void AliPHOSSDigitizer::Print(Option_t* option)const
329 // Prints parameters of SDigitizer
330 cout << "------------------- "<< GetName() << " -------------" << endl ;
331 cout << " Writing SDigitis to branch with title " << fSDigitsTitle.Data() << endl ;
332 cout << " with digitization parameters A = " << fA << endl ;
333 cout << " B = " << fB << endl ;
334 cout << " Threshold for Primary assignment= " << fPrimThreshold << endl ;
335 cout << "---------------------------------------------------"<<endl ;
338 //__________________________________________________________________
339 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
342 // SDititizers are equal if their pedestal, slope and threshold are equal
344 if( (fA==sd.fA)&&(fB==sd.fB)&&(fPrimThreshold==sd.fPrimThreshold))
349 //__________________________________________________________________
350 void AliPHOSSDigitizer::PrintSDigits(Option_t * option)
352 // Prints list of digits produced in the current pass of AliPHOSDigitizer
354 cout << "AliPHOSSDigitizer: " << endl ;
355 cout << " Number of entries in SDigits list " << fSDigits->GetEntriesFast() << endl ;
358 if(strstr(option,"all")){// print all digits
361 AliPHOSDigit * digit;
362 cout << "SDigit Id " << " Amplitude " << " Index " << " Nprim " << " Primaries list " << endl;
364 for (index = 0 ; index < fSDigits->GetEntries() ; index++) {
365 digit = (AliPHOSDigit * ) fSDigits->At(index) ;
366 cout << setw(8) << digit->GetId() << " " << setw(3) << digit->GetAmp() << " "
367 << setw(6) << digit->GetIndexInList() << " "
368 << setw(5) << digit->GetNprimary() <<" ";
371 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
372 cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";