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 **************************************************************************/
19 #include "AliRunDigitizer.h"
20 #include "AliRunLoader.h"
22 #include "AliMUONDigitizer.h"
23 #include "AliMUONConstants.h"
24 #include "AliMUONChamber.h"
25 #include "AliMUONHitMapA1.h"
27 #include "AliMUONLoader.h"
28 #include "AliMUONChamber.h"
29 #include "AliMUONConstants.h"
30 #include "AliMUONDigitizer.h"
31 #include "AliMUONTransientDigit.h"
32 #include "AliMUONHitMapA1.h"
33 #include "AliMUONTriggerDecision.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 iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
212 AliMUONTransientDigit *pdigit =
213 static_cast<AliMUONTransientDigit*>( fHitMap[iNchCpl]->GetHit(mTD->PadX(),mTD->PadY()) );
216 pdigit->AddSignal( mTD->Signal() );
217 pdigit->AddPhysicsSignal( mTD->Physics() );
219 // update list of tracks
220 Int_t ntracks = mTD->GetNTracks();
221 if (ntracks > kMAXTRACKS) // Truncate the number of tracks to kMAXTRACKS if we have to.
224 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
226 AliDebug(1,Form( "Reseting the number of tracks to be %d.", kMAXTRACKS));
227 ntracks = kMAXTRACKS;
230 for (Int_t i = 0; i < ntracks; i++)
232 pdigit->UpdateTrackList( mTD->GetTrack(i), mTD->GetCharge(i) );
236 //------------------------------------------------------------------------
237 void AliMUONDigitizer::AddTransientDigit(AliMUONTransientDigit* mTD)
239 // Adds the transient digit to the fTDList and sets the appropriate entry
240 // in the fHitMap arrays.
242 AliDebug(4,Form( "Adding transient digit 0x%X", (void*)mTD));
243 // Choosing the maping of the cathode plane of the chamber:
244 Int_t iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
245 fTDList->AddAtAndExpand(mTD, fTDCounter);
246 fHitMap[iNchCpl]->SetHit( mTD->PadX(), mTD->PadY(), fTDCounter);
250 //------------------------------------------------------------------------
251 Bool_t AliMUONDigitizer::ExistTransientDigit(AliMUONTransientDigit* mTD)
253 // Checks if the transient digit already exists on the corresponding fHitMap.
254 // i.e. is there a transient digit on the same chamber, cathode and pad position
255 // as mTD. If yes then kTRUE is returned else kFASLE is returned.
257 // Choosing the maping of the cathode plane of the chamber:
258 Int_t iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
259 return( fHitMap[iNchCpl]->TestHit(mTD->PadX(), mTD->PadY()) );
262 //-----------------------------------------------------------------------
263 void AliMUONDigitizer::CreateDigits()
265 // Loops over the fTDList for each cathode, gets the correct signal for the
266 // digit and adds the new digit to the output stream.
268 AliDebug(2, "Creating digits...");
269 for (Int_t icat = 0; icat < 2; icat++)
272 // Filling Digit List
273 Int_t nentries = fTDList->GetEntriesFast();
274 for (Int_t nent = 0; nent < nentries; nent++)
276 AliMUONTransientDigit* td = (AliMUONTransientDigit*)fTDList->At(nent);
277 if (td == NULL) continue;
279 // Must be the same cathode, otherwise we will fill a mixture
280 // of digits from both cathodes.
281 if (icat != td->Cathode() - 1) continue;
283 AliDebug(3,Form( "Creating digit from transient digit 0x%X", (void*)td));
285 Int_t q = GetSignalFrom(td);
286 if (q > 0) AddDigit(td, q);
292 //------------------------------------------------------------------------
293 void AliMUONDigitizer::AddDigit(AliMUONTransientDigit* td, Int_t responseCharge)
295 // Prepares the digits, track and charge arrays in preparation for a call to
296 // AddDigit(Int_t, Int_t[kMAXTRACKS], Int_t[kMAXTRACKS], Int_t[6])
297 // This method is called by CreateDigits() whenever a new digit needs to be added
298 // to the output stream trees.
299 // The responseCharge value is used as the Signal of the new digit.
300 // The OnWriteTransientDigit method is also called just before the adding the
301 // digit to allow inheriting digitizers to be able to do some specific processing
304 Int_t tracks[kMAXTRACKS];
305 Int_t charges[kMAXTRACKS];
308 digits[0] = td->PadX();
309 digits[1] = td->PadY();
310 digits[2] = td->Cathode() - 1;
311 digits[3] = responseCharge;
312 digits[4] = td->Physics();
313 digits[5] = td->Hit();
315 Int_t nptracks = td->GetNTracks();
316 if (nptracks > kMAXTRACKS)
319 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
321 AliDebug(1, Form("Reseting the number of tracks to be %d.", kMAXTRACKS));
322 nptracks = kMAXTRACKS;
325 for (Int_t i = 0; i < nptracks; i++)
327 tracks[i] = td->GetTrack(i);
328 charges[i] = td->GetCharge(i);
331 // Sort list of tracks according to charge
332 SortTracks(tracks,charges,nptracks);
334 if (nptracks < kMAXTRACKS )
336 for (Int_t i = nptracks; i < kMAXTRACKS; i++)
343 AliDebug(4,Form( "Adding digit with charge %d.", responseCharge));
345 OnWriteTransientDigit(td);
346 AddDigit(td->Chamber(), tracks, charges, digits);
347 AddDigitTrigger(td->Chamber(), tracks, charges, digits);
350 //------------------------------------------------------------------------
351 void AliMUONDigitizer::OnCreateTransientDigit(AliMUONTransientDigit* /*digit*/, TObject* /*source_object*/)
355 // This is derived by Digitisers that want to trace which digits were made from
359 //------------------------------------------------------------------------
360 void AliMUONDigitizer::OnWriteTransientDigit(AliMUONTransientDigit* /*digit*/)
364 // This is derived by Digitisers that want to trace which digits were made from
368 //------------------------------------------------------------------------
369 Bool_t AliMUONDigitizer::FetchLoaders(const char* foldername, AliRunLoader*& runloader, AliMUONLoader*& muonloader)
371 // Fetches the run loader from the current folder, specified by 'foldername'.
372 // The muon loader is then loaded from the fetched run loader.
373 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
375 AliDebug(3, Form("Fetching run loader and muon loader from folder: %s", foldername));
377 runloader = AliRunLoader::GetRunLoader(foldername);
378 if (runloader == NULL)
380 AliError(Form("RunLoader not found in folder: %s", foldername));
383 muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
384 if (muonloader == NULL)
386 AliError(Form("MUONLoader not found in folder: %s", foldername));
393 //------------------------------------------------------------------------
394 Bool_t AliMUONDigitizer::FetchGlobalPointers(AliRunLoader* runloader)
396 // Fetches the AliRun object into the global gAlice pointer from the specified
397 // run loader. The AliRun object is loaded into memory using the run loader if
398 // not yet loaded. The MUON module object is then loaded from gAlice and
399 // AliMUONData fetched from the MUON module.
400 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
402 AliDebug(3, Form("Fetching gAlice, MUON module and AliMUONData from runloader 0x%X.",
406 if (runloader->GetAliRun() == NULL) runloader->LoadgAlice();
407 gAlice = runloader->GetAliRun();
410 AliError(Form("Could not find the AliRun object in runloader 0x%X.", (void*)runloader));
413 fMUON = (AliMUON*) gAlice->GetDetector("MUON");
416 AliError(Form("Could not find the MUON module in runloader 0x%X.", (void*)runloader));
420 AliMUONLoader *muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
421 if (muonloader == NULL)
423 AliError( "MUONLoader not found ");
428 if (fMUONData == NULL) fMUONData = new AliMUONData(muonloader,"MUON","MUON");
429 if (fMUONData == NULL)
431 AliError(Form("Could not find AliMUONData object in runloader 0x%X.", (void*)runloader));
437 //-----------------------------------------------------------------------
438 Bool_t AliMUONDigitizer::FetchTriggerPointer(AliMUONLoader* loader)
440 if (fMUONData == NULL) {
441 AliError("MUONData not found");
445 if (fTrigDec == NULL)
446 fTrigDec = new AliMUONTriggerDecision(loader,0,fMUONData);
450 //------------------------------------------------------------------------
451 void AliMUONDigitizer::ParseOptions(Option_t* options)
453 // Called by the Exec method. ParseOptions should parse the option string given to the Exec method.
455 // The following options are defined:
456 // "debug" - Sets the debug level to 99, which will show all debug messages.
457 // "deb" - Same as "debug", implemented for backward comparability.
459 // If an invalid option is specified it is simply ignored.
461 TString optionString = options;
462 if (optionString.Data() == "debug" ||
463 optionString.Data() == "deb" // maintained for compatability.
466 AliInfo("Called with option \"debug\".");
471 //------------------------------------------------------------------------
472 void AliMUONDigitizer::InitArrays()
474 // Creates a new fTDList object.
475 // Also creates an array of 2 * chamber_number AliMUONHitMapA1 objects
476 // in the fHitMaps array. Each one is set to a chamber and cathode
477 // specific segmentation model.
479 // Note: the fTDList and fHitMap arrays must be NULL before calling this method.
481 AliDebug(2, "Initialising internal arrays.");
482 AliDebug(4, "Creating transient digits list.");
483 fTDList = new TObjArray;
485 // Array of pointer of the AliMUONHitMapA1:
486 // two HitMaps per chamber, or one HitMap per cahtode plane
487 fHitMap = new AliMUONHitMapA1* [2*AliMUONConstants::NCh()];
489 // Loop over chambers for the definition AliMUONHitMap
490 for (Int_t i = 0; i < AliMUONConstants::NCh(); i++)
492 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 1.", i+1));
493 AliMUONChamber* chamber = &(fMUON->Chamber(i));
494 AliSegmentation* c1Segmentation = chamber->SegmentationModel(1); // Cathode plane 1
495 fHitMap[i] = new AliMUONHitMapA1(c1Segmentation, fTDList);
496 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 2.", i+1));
497 AliSegmentation* c2Segmentation = chamber->SegmentationModel(2); // Cathode plane 2
498 fHitMap[i+AliMUONConstants::NCh()] = new AliMUONHitMapA1(c2Segmentation, fTDList);
502 //------------------------------------------------------------------------
503 void AliMUONDigitizer::CleanupArrays()
505 // The arrays fTDList and fHitMap are deleted and the pointers set to NULL.
507 AliDebug(2, "Deleting internal arrays.");
508 for(Int_t i = 0; i < 2*AliMUONConstants::NCh(); i++)
510 AliDebug(4,Form( "Deleting hit map for chamber %d, cathode %d.",
511 i%AliMUONConstants::NCh()+1, i/AliMUONConstants::NCh()+1));
517 AliDebug(4, "Deleting transient digits list.");
524 //------------------------------------------------------------------------
525 void AliMUONDigitizer::SortTracks(Int_t *tracks, Int_t *charges, Int_t ntr) const
528 // Sort the list of tracks contributing to a given digit
529 // Only the 3 most significant tracks are actually sorted
532 if (ntr <= 1) return;
535 // Loop over signals, only 3 times
540 Int_t idx[3] = {-2,-2,-2};
541 Int_t jch[3] = {-2,-2,-2};
542 Int_t jtr[3] = {-2,-2,-2};
545 if (ntr < 3) imax = ntr;
548 for(i = 0; i < imax; i++)
553 for(j = 0; j < ntr; j++)
555 if ( (i == 1 && j == idx[i-1]) ||
556 (i == 2 && (j == idx[i-1] || j == idx[i-2]))
560 if(charges[j] > qmax)
570 jch[i] = charges[jmax];
571 jtr[i] = tracks[jmax];
576 for(i = 0; i < 3; i++)