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 * headerFile, const char * sDigitsTitle, const Bool_t toSplit):
80 TTask(sDigitsTitle, headerFile)
86 fDefaultInit = kFALSE ;
89 //____________________________________________________________________________
90 AliPHOSSDigitizer::AliPHOSSDigitizer(const AliPHOSSDigitizer & sd) {
95 fPrimThreshold = sd.fPrimThreshold ;
96 fSDigitsInRun = sd.fSDigitsInRun ;
97 fSplitFile = new TFile( (sd.fSplitFile)->GetName(), "new") ;
98 fToSplit = sd.fToSplit ;
101 //____________________________________________________________________________
102 AliPHOSSDigitizer::~AliPHOSSDigitizer()
109 //____________________________________________________________________________
110 void AliPHOSSDigitizer::Init()
112 // Initialization: open root-file, allocate arrays for hits and sdigits,
113 // attach task SDigitizer to the list of PHOS tasks
115 // Initialization can not be done in the default constructor
116 //============================================================= YS
117 // The initialisation is now done by AliPHOSGetter
119 if( strcmp(GetTitle(), "") == 0 )
120 SetTitle("galice.root") ;
122 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName(),fToSplit) ;
124 Error("Init" ,"Could not obtain the Getter object !") ;
128 gime->PostSDigits( GetName(), GetTitle() ) ;
132 // construct the name of the file as /path/PHOS.SDigits.root
133 // First - extract full path if necessary
134 TString sDigitsFileName(GetTitle()) ;
135 Ssiz_t islash = sDigitsFileName.Last('/') ;
136 if(islash<sDigitsFileName.Length())
137 sDigitsFileName.Remove(islash+1,sDigitsFileName.Length()) ;
140 // Next - append the file name
141 sDigitsFileName+="PHOS.SDigits." ;
142 if((strcmp(GetName(),"Default")!=0)&&(strcmp(GetName(),"")!=0)){
143 sDigitsFileName+=GetName() ;
144 sDigitsFileName+="." ;
146 sDigitsFileName+="root" ;
147 // Finally - check if the file already opened or open the file
148 fSplitFile = static_cast<TFile*>(gROOT->GetFile(sDigitsFileName.Data()));
150 fSplitFile = TFile::Open(sDigitsFileName.Data(),"update") ;
153 TString sdname(GetName() );
155 sdname.Append(GetTitle() ) ;
157 gime->PostSDigitizer(this) ;
160 //____________________________________________________________________________
161 void AliPHOSSDigitizer::InitParameters()
163 // initializes the parameters for difitization
166 fPrimThreshold = 0.01 ;
172 //____________________________________________________________________________
173 void AliPHOSSDigitizer::Exec(Option_t *option)
175 // Collects all hits in the same active volume into digit
177 if( strcmp(GetName(), "") == 0 )
180 if (strstr(option, "print") ) {
185 if(strstr(option,"tim"))
186 gBenchmark->Start("PHOSSDigitizer");
188 //Check, if this branch already exits
189 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
190 if(gime->BranchExists("SDigits") )
193 TString sdname(GetName()) ;
194 sdname.Remove(sdname.Index(GetTitle())-1) ;
196 Int_t nevents = gime->MaxEvent() ;
198 for(ievent = 0; ievent < nevents; ievent++){
199 gime->Event(ievent,"H") ;
200 const TClonesArray * hits = gime->Hits() ;
201 TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
205 //Now make SDigits from hits, for PHOS it is the same, so just copy
206 Int_t nPrim = static_cast<Int_t>((gAlice->TreeH())->GetEntries()) ;
207 // Attention nPrim is the number of primaries tracked by Geant
208 // and this number could be different to the number of Primaries in TreeK;
210 for (iprim = 0 ; iprim < nPrim ; iprim ++) {
211 //=========== Get the PHOS branch from Hits Tree for the Primary iprim
214 for ( i = 0 ; i < hits->GetEntries() ; i++ ) {
215 AliPHOSHit * hit = dynamic_cast<AliPHOSHit *>(hits->At(i)) ;
216 // Assign primary number only if contribution is significant
218 if( hit->GetEnergy() > fPrimThreshold)
219 new((*sdigits)[nSdigits]) AliPHOSDigit(hit->GetPrimary(),hit->GetId(),
220 Digitize(hit->GetEnergy()), hit->GetTime()) ;
222 new((*sdigits)[nSdigits]) AliPHOSDigit( -1 , hit->GetId(),
223 Digitize(hit->GetEnergy()), hit->GetTime()) ;
232 nSdigits = sdigits->GetEntriesFast() ;
233 fSDigitsInRun += nSdigits ;
234 sdigits->Expand(nSdigits) ;
237 for (i = 0 ; i < nSdigits ; i++) {
238 AliPHOSDigit * digit = dynamic_cast<AliPHOSDigit *>(sdigits->At(i)) ;
239 digit->SetIndexInList(i) ;
244 if((gAlice->TreeS() == 0)|| (fSplitFile))
245 gAlice->MakeTree("S", fSplitFile);
250 //First list of sdigits
251 Int_t bufferSize = 32000 ;
252 TBranch * sdigitsBranch = gAlice->TreeS()->Branch("PHOS",&sdigits,bufferSize);
253 sdigitsBranch->SetTitle(sdname);
256 Int_t splitlevel = 0 ;
257 AliPHOSSDigitizer * sd = this ;
258 TBranch * sdigitizerBranch = gAlice->TreeS()->Branch("AliPHOSSDigitizer","AliPHOSSDigitizer",
259 &sd,bufferSize,splitlevel);
260 sdigitizerBranch->SetTitle(sdname);
262 sdigitsBranch->Fill() ;
263 sdigitizerBranch->Fill() ;
265 gAlice->TreeS()->AutoSave() ;
267 if(strstr(option,"deb"))
268 PrintSDigits(option) ;
271 if(strstr(option,"tim")){
272 gBenchmark->Stop("PHOSSDigitizer");
273 Info("Exec"," took %f seconds for SDigitizing %f seconds per event",
274 gBenchmark->GetCpuTime("PHOSSDigitizer"), gBenchmark->GetCpuTime("PHOSSDigitizer")/nevents) ;
278 //__________________________________________________________________
279 void AliPHOSSDigitizer::SetSDigitsBranch(const char * title )
281 // Setting title to branch SDigits
283 TString stitle(title) ;
285 // check if branch with title already exists
286 TBranch * sdigitsBranch =
287 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("PHOS")) ;
288 TBranch * sdigitizerBranch =
289 static_cast<TBranch*>(gAlice->TreeS()->GetListOfBranches()->FindObject("AliPHOSSDigitizer")) ;
290 const char * sdigitsTitle = sdigitsBranch ->GetTitle() ;
291 const char * sdigitizerTitle = sdigitizerBranch ->GetTitle() ;
292 if ( stitle.CompareTo(sdigitsTitle)==0 || stitle.CompareTo(sdigitizerTitle)==0 ){
293 Error("SetSDigitsBranch", "Cannot overwrite existing branch with title %s", title) ;
297 Info("SetSDigitsBranch", "-> Changing SDigits file from %s to %s", GetName(), title) ;
301 // Post to the WhiteBoard
302 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
303 gime->PostSDigits( title, GetTitle()) ;
307 //__________________________________________________________________
308 void AliPHOSSDigitizer::Print(Option_t* option)const
310 // Prints parameters of SDigitizer
312 message = "\n------------------- %s -------------\n" ;
313 message += " Writing SDigits to branch with title %s\n" ;
314 message += " with digitization parameters A = %f\n" ;
315 message += " B = %f\n" ;
316 message += " Threshold for Primary assignment= %f\n" ;
317 message += "---------------------------------------------------\n" ;
318 Info("Print", message.Data(), GetName(), GetName(), fA, fB, fPrimThreshold ) ;
322 //__________________________________________________________________
323 Bool_t AliPHOSSDigitizer::operator==( AliPHOSSDigitizer const &sd )const
326 // SDititizers are equal if their pedestal, slope and threshold are equal
328 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
340 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
341 TString sdname(GetName()) ;
342 sdname.Remove(sdname.Index(GetTitle())-1) ;
343 const TClonesArray * sdigits = gime->SDigits(sdname.Data()) ;
346 message = "\nAliPHOSSDigitiser: event " ;
347 message += gAlice->GetEvNumber();
348 message += "\n Number of entries in SDigits list " ;
349 message += sdigits->GetEntriesFast() ;
350 char * tempo = new char[8192];
352 if(strstr(option,"all")||strstr(option,"EMC")){
355 AliPHOSDigit * digit;
356 message += "\nEMC sdigits\n" ;
357 message += "\n Id Amplitude Time Index Nprim: Primaries list \n" ;
358 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
360 for (index = 0 ; (index < sdigits->GetEntriesFast()) &&
361 ((dynamic_cast<AliPHOSDigit *> (sdigits->At(index)))->GetId() <= maxEmc) ; index++) {
362 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
363 if(digit->GetNprimary() == 0)
365 sprintf(tempo, "\n%6d %8d %6.5e %4d %2d :",
366 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
369 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
370 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
376 if(strstr(option,"all")||strstr(option,"CPV")){
378 //loop over CPV digits
379 AliPHOSDigit * digit;
381 message += "CPV sdigits\n" ;
382 message += "\n Id Amplitude Index Nprim: Primaries list \n" ;
383 Int_t maxEmc = gime->PHOSGeometry()->GetNModules()*gime->PHOSGeometry()->GetNCristalsInModule() ;
385 for (index = 0 ; index < sdigits->GetEntriesFast(); index++) {
386 digit = dynamic_cast<AliPHOSDigit *>( sdigits->At(index) ) ;
387 if(digit->GetId() > maxEmc){
388 sprintf(tempo, "\n%6d %8d %4d %2d :",
389 digit->GetId(), digit->GetAmp(), digit->GetIndexInList(), digit->GetNprimary()) ;
392 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
393 sprintf(tempo, "%d ",digit->GetPrimary(iprimary+1) ) ;
400 Info("PrintSDigits", message.Data() ) ;
403 //____________________________________________________________________________
404 void AliPHOSSDigitizer::UseHitsFrom(const char * filename)