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 //*-- Author : Dmitri Peressounko (SUBATECH & Kurchatov Institute)
20 //////////////////////////////////////////////////////////////////////////////
21 // This TTask performs digitization of Summable digits (in the PHOS case it is just
22 // the sum of contributions from all primary particles into a given cell).
23 // In addition it performs mixing of summable digits from different events.
24 // The name of the TTask is also the title of the branch that will contain
25 // the created SDigits
26 // The title of the TTAsk is the name of the file that contains the hits from
27 // which the SDigits are created
29 // For each event two branches are created in TreeD:
30 // "PHOS" - list of digits
31 // "AliPHOSDigitizer" - AliPHOSDigitizer with all parameters used in digitization
33 // Note, that one can set a title for new digits branch, and repeat digitization with
34 // another set of parameters.
37 // root[0] AliPHOSDigitizer * d = new AliPHOSDigitizer() ;
38 // root[1] d->ExecuteTask()
39 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
40 // //Digitizes SDigitis in all events found in file galice.root
42 // root[2] AliPHOSDigitizer * d1 = new AliPHOSDigitizer("galice1.root") ;
43 // // Will read sdigits from galice1.root
44 // root[3] d1->MixWith("galice2.root")
45 // Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
46 // // Reads another set of sdigits from galice2.root
47 // root[3] d1->MixWith("galice3.root")
48 // // Reads another set of sdigits from galice3.root
49 // root[4] d->ExecuteTask("deb timing")
50 // // Reads SDigits from files galice1.root, galice2.root ....
51 // // mixes them and stores produced Digits in file galice1.root
52 // // deb - prints number of produced digits
53 // // deb all - prints list of produced digits
54 // // timing - prints time used for digitization
57 // --- ROOT system ---
63 #include "TObjString.h"
64 #include "TBenchmark.h"
66 // --- Standard library ---
69 // --- AliRoot header files ---
72 #include "AliPHOSDigit.h"
74 #include "AliPHOSGetter.h"
75 #include "AliPHOSDigitizer.h"
76 #include "AliPHOSSDigitizer.h"
77 #include "AliPHOSGeometry.h"
79 ClassImp(AliPHOSDigitizer)
82 //____________________________________________________________________________
83 AliPHOSDigitizer::AliPHOSDigitizer():TTask("","")
88 fEMCDigitThreshold = 0.01 ;
90 fCPVDigitThreshold = 0.09 ;
91 fPPSDNoise = 0.0000001;
92 fPPSDDigitThreshold = 0.0000002 ;
96 //____________________________________________________________________________
97 AliPHOSDigitizer::AliPHOSDigitizer(const char *headerFile,const char * name):
98 TTask(name, headerFile)
103 fEMCDigitThreshold = 0.01 ;
105 fCPVDigitThreshold = 0.09 ;
106 fPPSDNoise = 0.0000001;
107 fPPSDDigitThreshold = 0.0000002 ;
113 //____________________________________________________________________________
114 AliPHOSDigitizer::~AliPHOSDigitizer()
121 //____________________________________________________________________________
122 void AliPHOSDigitizer::Digitize(const Int_t event)
125 // Makes the digitization of the collected summable digits.
126 // It first creates the array of all PHOS modules
127 // filled with noise (different for EMC, CPV and PPSD) and
128 // then adds contributions from SDigits.
129 // This design avoids scanning over the list of digits to add
130 // contribution to new SDigits only.
132 if( strcmp(GetName(), "") == 0 )
135 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
136 TClonesArray * digits = gime->Digits() ;
140 const AliPHOSGeometry *geom = gime->PHOSGeometry() ;
142 //Making digits with noise, first EMC
143 Int_t nEMC = geom->GetNModules()*geom->GetNPhi()*geom->GetNZ();
148 TString name = geom->GetName() ;
150 if ( name == "IHEP" || name == "MIXT" )
151 nCPV =nEMC + geom->GetNumberOfCPVPadsZ()*geom->GetNumberOfCPVPadsPhi()*
152 geom->GetNCPVModules()*geom->GetNumberOfCPVLayers() ;
156 if ( name == "GPS2" || name == "MIXT" )
157 nPPSD =nCPV+2*geom->GetNPPSDModules()*geom->GetNumberOfModulesPhi()*geom->GetNumberOfModulesZ()*
158 geom->GetNumberOfPadsPhi()*geom->GetNumberOfPadsZ() ;
163 digits->Expand(nPPSD) ;
166 // sdigitize random gaussian noise and add it to all cells (EMCA+CPV+PPSD)
167 // get first the sdigitizer from the tasks list (must have same name as the digitizer)
168 const AliPHOSSDigitizer * sDigitizer = gime->SDigitizer(GetName());
170 cerr << "ERROR: AliPHOSDigitizer::Digitize -> SDigitizer with name " << GetName() << " not found " << endl ;
173 for(absID = 1; absID <= nEMC; absID++){
174 Float_t noise = gRandom->Gaus(0., fPinNoise) ;
175 new((*digits)[absID-1]) AliPHOSDigit( -1,absID,sDigitizer->Digitize(noise) ) ;
178 for(absID = nEMC+1; absID <= nCPV; absID++){
179 Float_t noise = gRandom->Gaus(0., fCPVNoise) ;
180 new((*digits)[absID-1]) AliPHOSDigit( -1,absID,sDigitizer->Digitize(noise) ) ;
183 for(absID = nCPV+1; absID <= nPPSD; absID++){
184 Float_t noise = gRandom->Gaus(0., fPPSDNoise) ;
185 new((*digits)[absID-1]) AliPHOSDigit( -1,absID,sDigitizer->Digitize(noise) ) ;
188 // loop through the sdigits posted to the White Board and add them to the noise
189 TCollection * folderslist = ((TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/SDigits/PHOS"))->GetListOfFolders() ;
190 TIter next(folderslist) ;
191 TFolder * folder = 0 ;
192 TClonesArray * sdigits = 0 ;
195 while ( (folder = (TFolder*)next()) ) {
196 if ( (strcmp(folder->GetTitle(), eventS.Data()) == 0) || (strcmp(folder->GetTitle(), "") == 0) ) {
197 Int_t numberoffiles = 0 ;
198 if ( (sdigits = (TClonesArray*)folder->FindObject(GetName()) ) ) {
199 cout << "INFO: AliPHOSDigitizer::Digitize -> Adding SDigits " << GetName() << " from " << folder->GetName() << endl ;
202 AliPHOSDigit * curSDigit ;
203 AliPHOSDigit * digit ;
204 for ( index = 0 ; index < sdigits->GetEntriesFast(); index++) {
205 curSDigit = (AliPHOSDigit*)sdigits->At(index) ;
206 curSDigit->ShiftPrimary(numberoffiles) ;
207 digit = (AliPHOSDigit*)digits->At(curSDigit->GetId() - 1 ) ;
208 *digit = *digit + *curSDigit ;
213 //remove digits below thresholds
214 for(absID = 0; absID < nEMC ; absID++)
215 if(sDigitizer->Calibrate(((AliPHOSDigit*)digits->At(absID))->GetAmp()) < fEMCDigitThreshold)
216 digits->RemoveAt(absID) ;
218 for(absID = nEMC; absID < nCPV ; absID++)
219 if(sDigitizer->Calibrate(((AliPHOSDigit*)digits->At(absID))->GetAmp()) < fCPVDigitThreshold)
220 digits->RemoveAt(absID) ;
222 for(absID = nCPV; absID < nPPSD ; absID++)
223 if(sDigitizer->Calibrate(((AliPHOSDigit *)digits->At(absID))->GetAmp()) < fPPSDDigitThreshold)
224 digits->RemoveAt(absID) ;
228 Int_t ndigits = digits->GetEntriesFast() ;
229 digits->Expand(ndigits) ;
231 //Set indexes in list of digits
233 for (i = 0 ; i < ndigits ; i++) {
234 AliPHOSDigit * digit = (AliPHOSDigit *) digits->At(i) ;
235 digit->SetIndexInList(i) ;
240 //____________________________________________________________________________
241 void AliPHOSDigitizer::Exec(Option_t *option)
245 if( strcmp(GetName(), "") == 0 )
248 if (strstr(option,"print")) {
253 if(strstr(option,"tim"))
254 gBenchmark->Start("PHOSDigitizer");
256 //Check, if this branch already exits
257 TObjArray * lob = (TObjArray*)gAlice->TreeD()->GetListOfBranches() ;
259 TBranch * branch = 0 ;
260 Bool_t phosfound = kFALSE, digitizerfound = kFALSE ;
262 while ( (branch = (TBranch*)next()) && (!phosfound || !digitizerfound) ) {
263 if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
266 else if ( (strcmp(branch->GetName(), "AliPHOSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) )
267 digitizerfound = kTRUE ;
270 if ( phosfound || digitizerfound ) {
271 cerr << "WARNING: AliPHOSDigitizer::WriteDigits -> Digits and/or Digitizer branch with name " << GetName()
272 << " already exits" << endl ;
276 Int_t nevents = (Int_t) gAlice->TreeE()->GetEntries() ;
279 for(ievent = 0; ievent < nevents; ievent++){
280 gAlice->SetEvent(ievent) ;
281 if(!ReadSDigits(ievent)) //read sdigits event(s) evaluated by Combinator() from file(s)
284 Digitize(ievent) ; //Add prepared SDigits to digits and add the noise
286 WriteDigits(ievent) ;
288 if(strstr(option,"deb"))
292 if(strstr(option,"tim")){
293 gBenchmark->Stop("PHOSDigitizer");
294 cout << "AliPHOSDigitizer:" << endl ;
295 cout << " took " << gBenchmark->GetCpuTime("PHOSDigitizer") << " seconds for Digitizing "
296 << gBenchmark->GetCpuTime("PHOSDigitizer")/nevents << " seconds per event " << endl ;
302 //____________________________________________________________________________
303 void AliPHOSDigitizer::Init()
305 // Makes all memory allocations
306 // Adds Digitizer task to the folder of PHOS tasks
307 //============================================================= YS
308 // The initialisation is now done by AliPHOSGetter
310 if( strcmp(GetTitle(), "") == 0 )
311 SetTitle("galice.root") ;
314 // the SDigits name is stored by AliPHOSGetter as the name of the TClones Array
315 // //YSAlice/WhiteBoard/SDigits/PHOS/headerFile/branchname and has branchTitle as title.
317 AliPHOSGetter * gime = AliPHOSGetter::GetInstance(GetTitle(), GetName()) ;
319 cerr << "ERROR: AliPHOSDigitizer::Init -> Could not obtain the Getter object !" << endl ;
323 // fIevent = new TArrayI(1) ;
324 // fIevent->AddAt(-1,0 ) ;
325 // fIeventMax = new TArrayI(1) ;
327 // fIeventMax->AddAt((Int_t) gAlice->TreeE()->GetEntries(), 0 );
329 //add Task to //YSAlice/tasks/Digitizer/PHOS
330 TTask * aliceSD = (TTask*)gROOT->FindObjectAny("YSAlice/tasks/Digitizer") ;
331 TTask * phosSD = (TTask*)aliceSD->GetListOfTasks()->FindObject("PHOS") ;
333 // create a folder on the white board //YSAlice/WhiteBoard/Digits/PHOS/headerFile/digitsTitle
334 gime->Post(GetTitle(), "D", GetName() ) ;
338 //__________________________________________________________________
339 void AliPHOSDigitizer::MixWith(const char* headerFile)
341 // Allows to produce digits by superimposing background and signal event.
342 // It is assumed, that headers file with SIGNAL events is opened in
344 // Sets the BACKGROUND event, with which the SIGNAL event is to be mixed
345 // Thus we avoid writing (changing) huge and expensive
346 // backgound files: all output will be writen into SIGNAL, i.e.
347 // opened in constructor file.
349 // One can open as many files to mix with as one needs.
350 // However only Sdigits with the same name (i.e. constructed with the same SDigitizer)
353 if( strcmp(GetName(), "") == 0 )
356 const char* sDigitsTitle = GetName() ;
358 // check if the specified SDigits do not already exist on the White Board:
359 // //YSAlice/WhiteBoard/SDigits/PHOS/headerFile/sDigitsTitle
361 TString path = "YSAlice/WhiteBoard/SDigits/PHOS/" ;
364 path += sDigitsTitle ;
365 if ( gROOT->FindObjectAny(path.Data()) ) {
366 cerr << "WARNING: AliPHOSDigitizer::MixWith -> Entry already exists, do not add" << endl ;
369 // check if the requested file is already open or exist and if SDigits Branch exist
370 TFile * file = (TFile*)gROOT->FindObject(headerFile);
372 file = new TFile(headerFile, "READ") ;
374 cerr << "ERROR: AliPHOSDigitizer::MixWith -> File " << headerFile << " does not exist!" << endl ;
379 // Read the first event with SDigits from the file-to-mix and post it to SDigits folder
382 TString tsname("TreeS") ;
384 TTree * ts = (TTree*)file->Get(tsname.Data()) ;
386 cerr << "ERROR: AliPHOSDigitizer::MixWith -> TreeS0 " << " does not exist in " << headerFile << endl ;
390 TObjArray * lob = (TObjArray*)ts->GetListOfBranches() ;
392 TBranch * branch = 0 ;
393 TBranch * sdigitsbranch = 0 ;
394 TBranch * sdigitizerbranch = 0 ;
395 Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
397 while ( (branch = (TBranch*)next()) && (!phosfound || !sdigitizerfound) ) {
398 if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), sDigitsTitle)==0) ) {
399 sdigitsbranch = branch ;
402 else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), sDigitsTitle)==0) ) {
403 sdigitizerbranch = branch ;
404 sdigitizerfound = kTRUE ;
408 if ( !phosfound || !sdigitizerfound ) {
409 cerr << "WARNING: AliPHOSDigitizer::MixWith -> Cannot find SDigits and/or SDigitizer with name " << sDigitsTitle << endl ;
413 // post the new SDigits to the White Board
414 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
415 gime->Post(headerFile, "S", sDigitsTitle) ;
419 //__________________________________________________________________
420 void AliPHOSDigitizer::Print(Option_t* option)const {
421 // Print Digitizer's parameters
422 if( strcmp(GetName(), "") != 0 ){
424 cout << "------------------- "<< GetName() << " -------------" << endl ;
425 cout << "Digitizing sDigits from file(s): " <<endl ;
427 TCollection * folderslist = ((TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/SDigits/PHOS"))->GetListOfFolders() ;
428 TIter next(folderslist) ;
429 TFolder * folder = 0 ;
431 while ( (folder = (TFolder*)next()) ) {
432 if ( folder->FindObject(GetName()) )
433 cout << "Adding SDigits " << GetName() << " from " << folder->GetName() << endl ;
436 cout << "Writing digits to " << GetTitle() << endl ;
439 cout << "With following parameters: " << endl ;
440 cout << " Electronics noise in EMC (fPinNoise) = " << fPinNoise << endl ;
441 cout << " Threshold in EMC (fEMCDigitThreshold) = " << fEMCDigitThreshold << endl ; ;
442 cout << " Noise in CPV (fCPVNoise) = " << fCPVNoise << endl ;
443 cout << " Threshold in CPV (fCPVDigitThreshold) = " << fCPVDigitThreshold << endl ;
444 cout << " Noise in PPSD (fPPSDNoise) = " << fPPSDNoise << endl ;
445 cout << " Threshold in PPSD (fPPSDDigitThreshold) = " << fPPSDDigitThreshold << endl ;
446 cout << "---------------------------------------------------" << endl ;
449 cout << "AliPHOSDigitizer not initialized " << endl ;
452 //__________________________________________________________________
453 void AliPHOSDigitizer::PrintDigits(Option_t * option){
454 // Print a table of digits
456 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
457 TClonesArray * digits = gime->Digits() ;
459 cout << "AliPHOSDigitiser: event " << gAlice->GetEvNumber() << endl ;
460 cout << " Number of entries in Digits list " << digits->GetEntriesFast() << endl ;
462 if(strstr(option,"all")){
465 AliPHOSDigit * digit;
466 cout << "Digit Id " << " Amplitude " << " Index " << " Nprim " << " Primaries list " << endl;
468 for (index = 0 ; index < digits->GetEntries() ; index++) {
469 digit = (AliPHOSDigit * ) digits->At(index) ;
470 cout << setw(8) << digit->GetId() << " " << setw(3) << digit->GetAmp() << " "
471 << setw(6) << digit->GetIndexInList() << " "
472 << setw(5) << digit->GetNprimary() <<" ";
475 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++)
476 cout << setw(5) << digit->GetPrimary(iprimary+1) << " ";
483 //__________________________________________________________________
484 void AliPHOSDigitizer::SetSDigitsBranch(const char* title)
486 // we set title (comment) of the SDigits branch in the first! header file
487 if( strcmp(GetName(), "") == 0 )
490 AliPHOSGetter::GetInstance()->SDigits()->SetName(title) ;
494 //__________________________________________________________________
495 Bool_t AliPHOSDigitizer::ReadSDigits(Int_t event)
497 // Reads summable digits from the opened files for the particular set of events given by fIevent
499 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
501 // loop over all opened files and read their SDigits to the White Board
502 TCollection * folderslist = ((TFolder*)gROOT->FindObjectAny("YSAlice/WhiteBoard/SDigits/PHOS"))->GetListOfFolders() ;
503 TIter next(folderslist) ;
504 TFolder * folder = 0 ;
505 TClonesArray * sdigits = 0 ;
508 while ( (folder = (TFolder*)next()) ) {
509 printf("Reading folder %s\n",folder->GetName());
510 file = (TFile*)gROOT->GetFile(folder->GetName());
513 // Get SDigits Tree header from file
514 TString treeName("TreeS") ;
516 treeS = (TTree*)gDirectory->Get(treeName.Data());
519 cerr << "ERROR: AliPHOSDigitizer::ReadSDigits There is no SDigit Tree" << endl;
523 //set address of the SDigits and SDigitizer
524 TBranch * sdigitsBranch = 0;
525 TBranch * sdigitizerBranch = 0;
526 TBranch * branch = 0 ;
527 TObjArray * lob = (TObjArray*)treeS->GetListOfBranches() ;
529 Bool_t phosfound = kFALSE, sdigitizerfound = kFALSE ;
531 while ( (branch = (TBranch*)next()) && (!phosfound || !sdigitizerfound) ) {
532 if ( (strcmp(branch->GetName(), "PHOS")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) {
534 sdigitsBranch = branch ;
537 else if ( (strcmp(branch->GetName(), "AliPHOSSDigitizer")==0) && (strcmp(branch->GetTitle(), GetName())==0) ) {
538 sdigitizerfound = kTRUE ;
539 sdigitizerBranch = branch ;
542 if ( !phosfound || !sdigitizerfound ) {
543 cerr << "WARNING: AliPHOSDigitizer::ReadSDigits -> Digits and/or Digitizer branch with name " << GetName()
544 << " not found" << endl ;
548 if ( (sdigits = (TClonesArray*)folder->FindObject(GetName()) ) ) {
549 sdigitsBranch->SetAddress(&sdigits) ;
552 AliPHOSSDigitizer * sdigitizer = gime->SDigitizer() ;
553 sdigitizerBranch->SetAddress(&sdigitizer) ;
555 sdigitsBranch->GetEntry(0) ;
556 sdigitizerBranch->GetEntry(0) ;
558 fPedestal = sdigitizer->GetPedestalParameter() ;
559 fSlope = sdigitizer->GetCalibrationParameter() ;
561 if (treeS) { delete treeS; treeS = 0;}
564 // After SDigits have been read from all files, return to the first one
567 folder = (TFolder*)next();
568 file = (TFile*)gROOT->GetFile(folder->GetName());
575 //____________________________________________________________________________
576 void AliPHOSDigitizer::Reset()
578 // sets current event number to the first simulated event
580 if( strcmp(GetName(), "") == 0 )
584 // for(inputs = 0; inputs < fNinputs ;inputs++)
585 // fIevent->AddAt(-1, inputs ) ;
589 //____________________________________________________________________________
590 void AliPHOSDigitizer::WriteDigits(Int_t event)
593 // Makes TreeD in the output file.
594 // Check if branch already exists:
595 // if yes, exit without writing: ROOT TTree does not support overwriting/updating of
596 // already existing branches.
597 // else creates branch with Digits, named "PHOS", title "...",
598 // and branch "AliPHOSDigitizer", with the same title to keep all the parameters
599 // and names of files, from which digits are made.
601 AliPHOSGetter * gime = AliPHOSGetter::GetInstance() ;
602 TClonesArray * digits = gime->Digits() ;
605 TString treeName("TreeD") ;
607 treeD = (TTree*)gDirectory->Get(treeName.Data());
610 gAlice->MakeTree("D") ;
612 // create new branches
613 // -- generate file name if necessary
615 if(gSystem->Getenv("CONFIG_SPLIT_FILE")){ //generating file name
616 file = new char[strlen(gAlice->GetBaseFile())+20] ;
617 sprintf(file,"%s/PHOS.Digits.root",gAlice->GetBaseFile()) ;
620 TDirectory *cwd = gDirectory;
621 // -- create Digits branch
622 Int_t bufferSize = 32000 ;
623 TBranch * digitsBranch = treeD->Branch("PHOS",&digits,bufferSize);
624 digitsBranch->SetTitle(GetName());
626 digitsBranch->SetFile(file);
627 TIter next( digitsBranch->GetListOfBranches());
629 while ((sbr=(TBranch*)next())) {
635 // -- Create Digitizer branch
636 Int_t splitlevel = 0 ;
637 AliPHOSDigitizer * d = gime->Digitizer(GetName()) ;
638 TBranch * digitizerBranch = treeD->Branch("AliPHOSDigitizer", "AliPHOSDigitizer", &d,bufferSize,splitlevel);
639 digitizerBranch->SetTitle(GetName());
641 digitizerBranch->SetFile(file);
642 TIter next( digitizerBranch->GetListOfBranches());
644 while ((sbr=(TBranch*)next())) {
650 digitsBranch->Fill() ;
651 digitizerBranch->Fill() ;
653 treeD->Write(0,kOverwrite) ;