1 /**************************************************************************
2 * Copyright(c) 1998-2000, 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 **************************************************************************/
21 #include "AliRunDigitizer.h"
22 #include "AliRunLoader.h"
24 #include "AliMUONDigitizer.h"
25 #include "AliMUONConstants.h"
26 #include "AliMUONChamber.h"
27 #include "AliMUONHitMapA1.h"
29 #include "AliMUONLoader.h"
30 #include "AliMUONConstants.h"
31 #include "AliMUONTransientDigit.h"
32 #include "AliMUONTriggerDecision.h"
34 #include "AliMUONGeometryModule.h"
35 #include "AliMUONGeometryStore.h"
37 /////////////////////////////////////////////////////////////////////////////////////
39 // AliMUONDigitizer should be base abstract class of all digitisers in the MUON
40 // module. It implements the common functionality of looping over input streams
41 // filling the fTDList and writing the fTDList to the output stream.
42 // Inheriting digitizers need to override certain methods to choose and initialize
43 // the correct input and output trees, apply the correct detector response if any
44 // and implement how the transient digits are generated from the input stream.
46 /////////////////////////////////////////////////////////////////////////////////////
48 ClassImp(AliMUONDigitizer)
50 //___________________________________________
51 AliMUONDigitizer::AliMUONDigitizer() :
60 // Default constructor.
61 // Initializes all pointers to NULL.
70 //___________________________________________
71 AliMUONDigitizer::AliMUONDigitizer(AliRunDigitizer* manager) :
72 AliDigitizer(manager),
80 // Constructor which should be used rather than the default constructor.
81 // Initializes all pointers to NULL.
90 //___________________________________________
91 AliMUONDigitizer::AliMUONDigitizer(const AliMUONDigitizer& rhs)
94 // Protected copy constructor
96 AliFatal("Not implemented.");
99 //___________________________________________
100 AliMUONDigitizer::~AliMUONDigitizer()
110 //-------------------------------------------------------------------
112 AliMUONDigitizer::operator=(const AliMUONDigitizer& rhs)
114 // Protected assignement operator
116 if (this == &rhs) return *this;
118 AliFatal("Not implemented.");
123 //------------------------------------------------------------------------
124 Bool_t AliMUONDigitizer::Init()
130 //------------------------------------------------------------------------
131 void AliMUONDigitizer::Exec(Option_t* option)
133 // The main work loop starts here.
134 // The digitization process is broken up into two steps:
135 // 1) Loop over input streams and create transient digits from the input.
136 // Done in GenerateTransientDigits()
137 // 2) Loop over the generated transient digits and write them to the output
138 // stream. Done in CreateDigits()
140 AliDebug(1, "Running digitiser.");
141 ParseOptions(option);
143 if (fManager->GetNinputs() == 0)
145 AliWarning("No inputs set, nothing to do.");
149 if (!FetchLoaders(fManager->GetInputFolderName(0), fRunLoader, fGime) ) return;
150 if (! FetchGlobalPointers(fRunLoader) ) return;
151 if (! FetchTriggerPointer(fGime) ) return;
155 AliDebug(2, Form("Event Number is %d.", fManager->GetOutputEventNr()));
157 // Loop over files to merge and to digitize
159 for (Int_t inputFile = 0; inputFile < fManager->GetNinputs(); inputFile++)
161 fMask = fManager->GetMask(inputFile);
162 AliDebug(2, Form("Digitising folder %d, with fMask = %d: %s", inputFile, fMask,
163 (const char*)fManager->GetInputFolderName(inputFile)));
166 // If this is the first file then we already have the loaders loaded.
167 if (! FetchLoaders(fManager->GetInputFolderName(inputFile), fRunLoader, fGime) )
170 // If this is not the first file then it is assumed to be background.
173 if (! InitInputData(fGime) ) continue;
174 GenerateTransientDigits();
175 CleanupInputData(fGime);
178 Bool_t ok = FetchLoaders(fManager->GetOutputFolderName(), fRunLoader, fGime);
179 if (ok) ok = InitOutputData(fGime);
180 if (ok) CreateDigits();
181 if (ok) CreateTrigger();
182 if (ok) CleanupOutputData(fGime);
185 CleanupTriggerArrays();
188 //--------------------------------------------------------------------------
189 void AliMUONDigitizer::AddOrUpdateTransientDigit(AliMUONTransientDigit* mTD)
191 // Checks to see if the transient digit exists in the corresponding fHitMap.
192 // If it does then the digit is updated otherwise it is added.
194 if (ExistTransientDigit(mTD))
196 UpdateTransientDigit(mTD);
197 delete mTD; // The new digit can be deleted because it was not added.
200 AddTransientDigit(mTD);
203 //------------------------------------------------------------------------
204 void AliMUONDigitizer::UpdateTransientDigit(AliMUONTransientDigit* mTD)
206 // Update the transient digit that is already in the fTDList by adding the new
207 // transient digits charges and track lists to the existing one.
209 AliDebug(4,Form( "Updating transient digit 0x%X", (void*)mTD));
210 // Choosing the maping of the cathode plane of the chamber:
211 Int_t detElemId = mTD->DetElemId();
213 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) * AliMUONConstants::NDetElem();
215 AliMUONTransientDigit *pdigit =
216 static_cast<AliMUONTransientDigit*>( fHitMap[iNchCpl]->GetHit(mTD->PadX(),mTD->PadY()) );
219 pdigit->AddSignal( mTD->Signal() );
220 pdigit->AddPhysicsSignal( mTD->Physics() );
222 // update list of tracks
223 Int_t ntracks = mTD->GetNTracks();
224 if (ntracks > kMAXTRACKS) // Truncate the number of tracks to kMAXTRACKS if we have to.
227 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
229 AliDebug(1,Form( "Reseting the number of tracks to be %d.", kMAXTRACKS));
230 ntracks = kMAXTRACKS;
233 for (Int_t i = 0; i < ntracks; i++)
235 pdigit->UpdateTrackList( mTD->GetTrack(i), mTD->GetCharge(i) );
239 //------------------------------------------------------------------------
240 void AliMUONDigitizer::AddTransientDigit(AliMUONTransientDigit* mTD)
242 // Adds the transient digit to the fTDList and sets the appropriate entry
243 // in the fHitMap arrays.
245 AliDebug(4,Form( "Adding transient digit 0x%X", (void*)mTD));
246 // Choosing the maping of the cathode plane of the chamber:
248 Int_t detElemId = mTD->DetElemId();
249 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) * AliMUONConstants::NDetElem();
251 fTDList->AddAtAndExpand(mTD, fTDCounter);
252 if (iNchCpl>-1 && iNchCpl<2*AliMUONConstants::NDetElem()) {
253 fHitMap[iNchCpl]->SetHit( mTD->PadX(), mTD->PadY(), fTDCounter);
258 //------------------------------------------------------------------------
259 Bool_t AliMUONDigitizer::ExistTransientDigit(AliMUONTransientDigit* mTD)
261 // Checks if the transient digit already exists on the corresponding fHitMap.
262 // i.e. is there a transient digit on the same chamber, cathode and pad position
263 // as mTD. If yes then kTRUE is returned else kFASLE is returned.
265 // Choosing the maping of the cathode plane of the chamber:
266 Int_t detElemId = mTD->DetElemId();
268 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) *AliMUONConstants::NDetElem() ;
270 // Int_t iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
271 if (iNchCpl>-1 && iNchCpl<2*AliMUONConstants::NDetElem())
272 return( fHitMap[iNchCpl]->TestHit(mTD->PadX(), mTD->PadY()) );
276 //-----------------------------------------------------------------------
277 void AliMUONDigitizer::CreateDigits()
279 // Loops over the fTDList for each cathode, gets the correct signal for the
280 // digit and adds the new digit to the output stream.
282 fTDList->Sort(); // sort by idDE
283 AliDebug(2, "Creating digits...");
284 // for (Int_t icat = 0; icat < 2; icat++) {
286 Int_t digitindex[14] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
289 // Filling Digit List
290 Int_t nentries = fTDList->GetEntriesFast();
291 for (Int_t nent = 0; nent < nentries; nent++) {
293 AliMUONTransientDigit* td = (AliMUONTransientDigit*)fTDList->At(nent);
294 if (td == NULL) continue;
296 // Must be the same cathode, otherwise we will fill a mixture
297 // of digits from both cathodes.
298 //if (icat != td->Cathode() - 1) continue;
300 AliDebug(3,Form( "Creating digit from transient digit 0x%X", (void*)td));
302 Int_t q = GetSignalFrom(td);
303 assert( 0 <= td->Chamber() && td->Chamber() <= 13 );
304 if (q > 0) AddDigit(td, q, digitindex[td->Chamber()]++);
311 //------------------------------------------------------------------------
312 void AliMUONDigitizer::AddDigit(
313 AliMUONTransientDigit* td, Int_t responseCharge,
317 // Prepares the digits, track and charge arrays in preparation for a call to
318 // AddDigit(Int_t, Int_t[kMAXTRACKS], Int_t[kMAXTRACKS], Int_t[6])
319 // This method is called by CreateDigits() whenever a new digit needs to be added
320 // to the output stream trees.
321 // The responseCharge value is used as the Signal of the new digit.
322 // The OnWriteTransientDigit method is also called just before the adding the
323 // digit to allow inheriting digitizers to be able to do some specific processing
326 Int_t tracks[kMAXTRACKS];
327 Int_t charges[kMAXTRACKS];
330 digits[0] = td->PadX();
331 digits[1] = td->PadY();
332 digits[2] = td->Cathode() - 1;
333 digits[3] = responseCharge;
334 digits[4] = td->Physics();
335 digits[5] = td->Hit();
336 digits[6] = td->DetElemId();
338 Int_t nptracks = td->GetNTracks();
339 if (nptracks > kMAXTRACKS) {
342 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
344 AliDebug(1, Form("Reseting the number of tracks to be %d.", kMAXTRACKS));
345 nptracks = kMAXTRACKS;
348 for (Int_t i = 0; i < nptracks; i++) {
350 tracks[i] = td->GetTrack(i);
351 charges[i] = td->GetCharge(i);
354 // Sort list of tracks according to charge
355 SortTracks(tracks,charges,nptracks);
357 if (nptracks < kMAXTRACKS ) {
359 for (Int_t i = nptracks; i < kMAXTRACKS; i++) {
365 AliDebug(4,Form( "Adding digit with charge %d.", responseCharge));
367 OnWriteTransientDigit(td);
368 AddDigit(td->Chamber(), tracks, charges, digits);
369 AddDigitTrigger(td->Chamber(), tracks, charges, digits, digitindex);
372 //------------------------------------------------------------------------
373 void AliMUONDigitizer::OnCreateTransientDigit(AliMUONTransientDigit* /*digit*/, TObject* /*source_object*/)
377 // This is derived by Digitisers that want to trace which digits were made from
381 //------------------------------------------------------------------------
382 void AliMUONDigitizer::OnWriteTransientDigit(AliMUONTransientDigit* /*digit*/)
386 // This is derived by Digitisers that want to trace which digits were made from
390 //------------------------------------------------------------------------
391 Bool_t AliMUONDigitizer::FetchLoaders(const char* foldername, AliRunLoader*& runloader, AliMUONLoader*& muonloader)
393 // Fetches the run loader from the current folder, specified by 'foldername'.
394 // The muon loader is then loaded from the fetched run loader.
395 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
397 AliDebug(3, Form("Fetching run loader and muon loader from folder: %s", foldername));
399 runloader = AliRunLoader::GetRunLoader(foldername);
400 if (runloader == NULL)
402 AliError(Form("RunLoader not found in folder: %s", foldername));
405 muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
406 if (muonloader == NULL)
408 AliError(Form("MUONLoader not found in folder: %s", foldername));
415 //------------------------------------------------------------------------
416 Bool_t AliMUONDigitizer::FetchGlobalPointers(AliRunLoader* runloader)
418 // Fetches the AliRun object into the global gAlice pointer from the specified
419 // run loader. The AliRun object is loaded into memory using the run loader if
420 // not yet loaded. The MUON module object is then loaded from gAlice and
421 // AliMUONData fetched from the MUON module.
422 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
424 AliDebug(3, Form("Fetching gAlice, MUON module and AliMUONData from runloader 0x%X.",
428 if (runloader->GetAliRun() == NULL) runloader->LoadgAlice();
429 gAlice = runloader->GetAliRun();
432 AliError(Form("Could not find the AliRun object in runloader 0x%X.", (void*)runloader));
435 fMUON = (AliMUON*) gAlice->GetDetector("MUON");
438 AliError(Form("Could not find the MUON module in runloader 0x%X.", (void*)runloader));
442 AliMUONLoader *muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
443 if (muonloader == NULL)
445 AliError( "MUONLoader not found ");
450 if (fMUONData == NULL) fMUONData = new AliMUONData(muonloader,"MUON","MUON");
451 if (fMUONData == NULL)
453 AliError(Form("Could not find AliMUONData object in runloader 0x%X.", (void*)runloader));
459 //-----------------------------------------------------------------------
460 Bool_t AliMUONDigitizer::FetchTriggerPointer(AliMUONLoader* loader)
462 if (fMUONData == NULL) {
463 AliError("MUONData not found");
467 if (fTrigDec == NULL)
468 fTrigDec = new AliMUONTriggerDecision(loader,0,fMUONData);
472 //------------------------------------------------------------------------
473 void AliMUONDigitizer::ParseOptions(Option_t* options)
475 // Called by the Exec method. ParseOptions should parse the option string given to the Exec method.
477 // The following options are defined:
478 // "debug" - Sets the debug level to 99, which will show all debug messages.
479 // "deb" - Same as "debug", implemented for backward comparability.
481 // If an invalid option is specified it is simply ignored.
483 TString optionString = options;
484 if (optionString.Data() == "debug" ||
485 optionString.Data() == "deb" // maintained for compatability.
488 AliInfo("Called with option \"debug\".");
493 //------------------------------------------------------------------------
494 void AliMUONDigitizer::InitArrays()
496 // Creates a new fTDList object.
497 // Also creates an array of 2 * chamber_number AliMUONHitMapA1 objects
498 // in the fHitMaps array. Each one is set to a chamber and cathode
499 // specific segmentation model.
501 // Note: the fTDList and fHitMap arrays must be NULL before calling this method.
503 AliDebug(2, "Initialising internal arrays.");
504 AliDebug(4, "Creating transient digits list.");
505 fTDList = new TObjArray;
507 // Array of pointer of the AliMUONHitMapA1:
508 // two HitMaps per chamber, or one HitMap per cahtode plane
509 fHitMap = new AliMUONHitMapA1* [2*AliMUONConstants::NDetElem()];
510 for (Int_t i=0; i<2*AliMUONConstants::NDetElem(); i++) fHitMap[i] = 0x0;
515 for (Int_t i = 0; i < AliMUONConstants::NCh(); i++) {
518 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 1.", i+1));
519 AliMUONChamber* chamber = &(fMUON->Chamber(i));
520 AliMUONGeometrySegmentation* c1Segmentation = chamber->SegmentationModel2(1); // Cathode plane 1
521 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 2.", i+1));
522 AliMUONGeometrySegmentation* c2Segmentation = chamber->SegmentationModel2(2); // Cathode plane 2
524 AliMUONGeometryModule* geometry = fMUON->Chamber(i).GetGeometry();
525 AliMUONGeometryStore* detElements = geometry->GetDetElementStore();
528 // Loop over detection elements
529 for (Int_t j=0; j<detElements->GetNofEntries(); j++) {
531 idDE = detElements->GetEntry(j)->GetUniqueID();
532 fNDetElemId[idDE] = k;
534 fHitMap[k] = new AliMUONHitMapA1(idDE,c1Segmentation, fTDList);
536 fHitMap[k+AliMUONConstants::NDetElem()] = new AliMUONHitMapA1(idDE,c2Segmentation, fTDList);
541 //------------------------------------------------------------------------
542 void AliMUONDigitizer::CleanupArrays()
544 // The arrays fTDList and fHitMap are deleted and the pointers set to NULL.
546 AliDebug(2, "Deleting internal arrays.");
547 for(Int_t i = 0; i < 2*AliMUONConstants::NDetElem(); i++) {
553 AliDebug(4, "Deleting transient digits list.");
560 //------------------------------------------------------------------------
561 void AliMUONDigitizer::SortTracks(Int_t *tracks, Int_t *charges, Int_t ntr) const
564 // Sort the list of tracks contributing to a given digit
565 // Only the 3 most significant tracks are actually sorted
568 if (ntr <= 1) return;
571 // Loop over signals, only 3 times
576 Int_t idx[3] = {-2,-2,-2};
577 Int_t jch[3] = {-2,-2,-2};
578 Int_t jtr[3] = {-2,-2,-2};
581 if (ntr < 3) imax = ntr;
584 for(i = 0; i < imax; i++)
589 for(j = 0; j < ntr; j++)
591 if ( (i == 1 && j == idx[i-1]) ||
592 (i == 2 && (j == idx[i-1] || j == idx[i-2]))
596 if(charges[j] > qmax)
606 jch[i] = charges[jmax];
607 jtr[i] = tracks[jmax];
612 for(i = 0; i < 3; i++)