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 **************************************************************************/
18 #include <Riostream.h>
19 #include <TDirectory.h>
23 #include "AliRunDigitizer.h"
24 #include "AliRunLoader.h"
25 #include "AliLoader.h"
27 #include "AliMUONDigitizer.h"
28 #include "AliMUONConstants.h"
29 #include "AliMUONChamber.h"
30 #include "AliMUONHitMapA1.h"
32 #include "AliMUONChamber.h"
33 #include "AliMUONConstants.h"
34 #include "AliMUONDigit.h"
35 #include "AliMUONDigitizer.h"
36 #include "AliMUONHit.h"
37 #include "AliMUONHitMapA1.h"
38 #include "AliMUONPadHit.h"
39 #include "AliMUONTransientDigit.h"
41 /////////////////////////////////////////////////////////////////////////////////////
43 // AliMUONDigitizer should be base abstract class of all digitisers in the MUON
44 // module. It implements the common functionality of looping over input streams
45 // filling the fTDList and writing the fTDList to the output stream.
46 // Inheriting digitizers need to override certain methods to choose and initialize
47 // the correct input and output trees, apply the correct detector response if any
48 // and implement how the transient digits are generated from the input stream.
50 /////////////////////////////////////////////////////////////////////////////////////
52 ClassImp(AliMUONDigitizer)
54 //___________________________________________
55 AliMUONDigitizer::AliMUONDigitizer() :
64 // Default constructor.
65 // Initializes all pointers to NULL.
73 //___________________________________________
74 AliMUONDigitizer::AliMUONDigitizer(AliRunDigitizer* manager) :
75 AliDigitizer(manager),
83 // Constructor which should be used rather than the default constructor.
84 // Initializes all pointers to NULL.
92 //___________________________________________
93 AliMUONDigitizer::AliMUONDigitizer(const AliMUONDigitizer& rhs)
96 // Protected copy constructor
98 Fatal("AliMUONDigitizer", "Not implemented.");
101 //___________________________________________
102 AliMUONDigitizer::~AliMUONDigitizer()
107 //-------------------------------------------------------------------
109 AliMUONDigitizer::operator=(const AliMUONDigitizer& rhs)
111 // Protected assignement operator
113 if (this == &rhs) return *this;
115 Fatal("operator=", "Not implemented.");
120 //------------------------------------------------------------------------
121 Bool_t AliMUONDigitizer::Init()
127 //------------------------------------------------------------------------
128 void AliMUONDigitizer::Exec(Option_t* option)
130 // The main work loop starts here.
131 // The digitization process is broken up into two steps:
132 // 1) Loop over input streams and create transient digits from the input.
133 // Done in GenerateTransientDigits()
134 // 2) Loop over the generated transient digits and write them to the output
135 // stream. Done in CreateDigits()
137 if (GetDebug() > 0) Info("Exec", "Running digitiser.");
138 ParseOptions(option);
140 if (fManager->GetNinputs() == 0)
142 Warning("Exec", "No inputs set, nothing to do.");
146 if (! FetchLoaders(fManager->GetInputFolderName(0), runloader, gime) ) return;
147 if (! FetchGlobalPointers(runloader) ) return;
151 if (GetDebug() > 1) Info("Exec", "Event Number is %d.", fManager->GetOutputEventNr());
153 // Loop over files to merge and to digitize
155 for (Int_t inputFile = 0; inputFile < fManager->GetNinputs(); inputFile++)
157 fMask = fManager->GetMask(inputFile);
159 Info("Exec", "Digitising folder %d, with fMask = %d: %s", inputFile, fMask,
160 (const char*)fManager->GetInputFolderName(inputFile));
163 // If this is the first file then we already have the loaders loaded.
164 if (! FetchLoaders(fManager->GetInputFolderName(inputFile), runloader, gime) )
167 // If this is not the first file then it is assumed to be background.
170 if (! InitInputData(gime) ) continue;
171 GenerateTransientDigits();
172 CleanupInputData(gime);
175 Bool_t ok = FetchLoaders(fManager->GetOutputFolderName(), runloader, gime);
176 if (ok) ok = InitOutputData(gime);
177 if (ok) CreateDigits();
178 if (ok) CleanupOutputData(gime);
183 //--------------------------------------------------------------------------
184 void AliMUONDigitizer::AddOrUpdateTransientDigit(AliMUONTransientDigit* mTD)
186 // Checks to see if the transient digit exists in the corresponding fHitMap.
187 // If it does then the digit is updated otherwise it is added.
189 if (ExistTransientDigit(mTD))
191 UpdateTransientDigit(mTD);
192 delete mTD; // The new digit can be deleted because it was not added.
195 AddTransientDigit(mTD);
198 //------------------------------------------------------------------------
199 void AliMUONDigitizer::UpdateTransientDigit(AliMUONTransientDigit* mTD)
201 // Update the transient digit that is already in the fTDList by adding the new
202 // transient digits charges and track lists to the existing one.
205 Info("UpdateTransientDigit", "Updating transient digit 0x%X", (void*)mTD);
206 // Choosing the maping of the cathode plane of the chamber:
207 Int_t iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
208 AliMUONTransientDigit *pdigit =
209 static_cast<AliMUONTransientDigit*>( fHitMap[iNchCpl]->GetHit(mTD->PadX(),mTD->PadY()) );
212 pdigit->AddSignal( mTD->Signal() );
213 pdigit->AddPhysicsSignal( mTD->Physics() );
215 // update list of tracks
216 Int_t ntracks = mTD->GetNTracks();
217 if (ntracks > kMAXTRACKS) // Truncate the number of tracks to kMAXTRACKS if we have to.
221 Warning("UpdateTransientDigit",
222 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
224 Warning("UpdateTransientDigit", "Reseting the number of tracks to be %d.", kMAXTRACKS);
226 ntracks = kMAXTRACKS;
229 for (Int_t i = 0; i < ntracks; i++)
231 pdigit->UpdateTrackList( mTD->GetTrack(i), mTD->GetCharge(i) );
235 //------------------------------------------------------------------------
236 void AliMUONDigitizer::AddTransientDigit(AliMUONTransientDigit* mTD)
238 // Adds the transient digit to the fTDList and sets the appropriate entry
239 // in the fHitMap arrays.
242 Info("AddTransientDigit", "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 if (GetDebug() > 1) Info("CreateDigits", "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;
284 Info("CreateDigits", "Creating digit from transient digit 0x%X", (void*)td);
286 Int_t q = GetSignalFrom(td);
287 if (q > 0) AddDigit(td, q);
293 //------------------------------------------------------------------------
294 void AliMUONDigitizer::AddDigit(AliMUONTransientDigit* td, Int_t response_charge)
296 // Prepares the digits, track and charge arrays in preparation for a call to
297 // AddDigit(Int_t, Int_t[kMAXTRACKS], Int_t[kMAXTRACKS], Int_t[6])
298 // This method is called by CreateDigits() whenever a new digit needs to be added
299 // to the output stream trees.
300 // The response_charge value is used as the Signal of the new digit.
301 // The OnWriteTransientDigit method is also called just before the adding the
302 // digit to allow inheriting digitizers to be able to do some specific processing
305 Int_t tracks[kMAXTRACKS];
306 Int_t charges[kMAXTRACKS];
309 digits[0] = td->PadX();
310 digits[1] = td->PadY();
311 digits[2] = td->Cathode() - 1;
312 digits[3] = response_charge;
313 digits[4] = td->Physics();
314 digits[5] = td->Hit();
316 Int_t nptracks = td->GetNTracks();
317 if (nptracks > kMAXTRACKS)
322 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
324 Warning("AddDigit", "Reseting the number of tracks to be %d.", kMAXTRACKS);
326 nptracks = kMAXTRACKS;
329 for (Int_t i = 0; i < nptracks; i++)
331 tracks[i] = td->GetTrack(i);
332 charges[i] = td->GetCharge(i);
335 // Sort list of tracks according to charge
336 SortTracks(tracks,charges,nptracks);
338 if (nptracks < kMAXTRACKS )
340 for (Int_t i = nptracks; i < kMAXTRACKS; i++)
347 if (GetDebug() > 3) Info("AddDigit", "Adding digit with charge %d.", response_charge);
349 OnWriteTransientDigit(td);
350 AddDigit(td->Chamber(), tracks, charges, digits);
353 //------------------------------------------------------------------------
354 void AliMUONDigitizer::OnCreateTransientDigit(AliMUONTransientDigit* /*digit*/, TObject* /*source_object*/)
358 // This is derived by Digitisers that want to trace which digits were made from
362 //------------------------------------------------------------------------
363 void AliMUONDigitizer::OnWriteTransientDigit(AliMUONTransientDigit* /*digit*/)
367 // This is derived by Digitisers that want to trace which digits were made from
371 //------------------------------------------------------------------------
372 Bool_t AliMUONDigitizer::FetchLoaders(const char* foldername, AliRunLoader*& runloader, AliMUONLoader*& muonloader)
374 // Fetches the run loader from the current folder, specified by 'foldername'.
375 // The muon loader is then loaded from the fetched run loader.
376 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
379 Info("FetchLoaders", "Fetching run loader and muon loader from folder: %s", foldername);
381 runloader = AliRunLoader::GetRunLoader(foldername);
382 if (runloader == NULL)
384 Error("FetchLoaders", "RunLoader not found in folder: %s", foldername);
387 muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
388 if (muonloader == NULL)
390 Error("FetchLoaders", "MUONLoader not found in folder: %s", foldername);
396 //------------------------------------------------------------------------
397 Bool_t AliMUONDigitizer::FetchGlobalPointers(AliRunLoader* runloader)
399 // Fetches the AliRun object into the global gAlice pointer from the specified
400 // run loader. The AliRun object is loaded into memory using the run loader if
401 // not yet loaded. The MUON module object is then loaded from gAlice and
402 // AliMUONData fetched from the MUON module.
403 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
406 Info("FetchGlobalPointers", "Fetching gAlice, MUON module and AliMUONData from runloader 0x%X.",
410 if (runloader->GetAliRun() == NULL) runloader->LoadgAlice();
411 gAlice = runloader->GetAliRun();
414 Error("FetchGlobalPointers", "Could not find the AliRun object in runloader 0x%X.", (void*)runloader);
417 pMUON = (AliMUON*) gAlice->GetDetector("MUON");
420 Error("FetchGlobalPointers", "Could not find the MUON module in runloader 0x%X.", (void*)runloader);
423 muondata = pMUON->GetMUONData();
424 if (muondata == NULL)
426 Error("FetchGlobalPointers", "Could not find AliMUONData object in runloader 0x%X.", (void*)runloader);
432 //------------------------------------------------------------------------
433 void AliMUONDigitizer::ParseOptions(Option_t* options)
435 // Called by the Exec method. ParseOptions should parse the option string given to the Exec method.
437 // The following options are defined:
438 // "debug" - Sets the debug level to 99, which will show all debug messages.
439 // "deb" - Same as "debug", implemented for backward comparability.
441 // If an invalid option is specified it is simply ignored.
443 TString optionString = options;
444 if (optionString.Data() == "debug" ||
445 optionString.Data() == "deb" // maintained for compatability.
448 Info("ParseOptions", "Called with option \"debug\".");
453 //------------------------------------------------------------------------
454 void AliMUONDigitizer::InitArrays()
456 // Creates a new fTDList object.
457 // Also creates an array of 2 * chamber_number AliMUONHitMapA1 objects
458 // in the fHitMaps array. Each one is set to a chamber and cathode
459 // specific segmentation model.
461 // Note: the fTDList and fHitMap arrays must be NULL before calling this method.
463 if (GetDebug() > 1) Info("InitArrays", "Initialising internal arrays.");
464 if (GetDebug() > 3) Info("InitArrays", "Creating transient digits list.");
465 fTDList = new TObjArray;
467 // Array of pointer of the AliMUONHitMapA1:
468 // two HitMaps per chamber, or one HitMap per cahtode plane
469 fHitMap = new AliMUONHitMapA1* [2*AliMUONConstants::NCh()];
471 // Loop over chambers for the definition AliMUONHitMap
472 for (Int_t i = 0; i < AliMUONConstants::NCh(); i++)
474 if (GetDebug() > 3) Info("InitArrays", "Creating hit map for chamber %d, cathode 1.", i+1);
475 AliMUONChamber* chamber = &(pMUON->Chamber(i));
476 AliSegmentation* c1Segmentation = chamber->SegmentationModel(1); // Cathode plane 1
477 fHitMap[i] = new AliMUONHitMapA1(c1Segmentation, fTDList);
478 if (GetDebug() > 3) Info("InitArrays", "Creating hit map for chamber %d, cathode 2.", i+1);
479 AliSegmentation* c2Segmentation = chamber->SegmentationModel(2); // Cathode plane 2
480 fHitMap[i+AliMUONConstants::NCh()] = new AliMUONHitMapA1(c2Segmentation, fTDList);
484 //------------------------------------------------------------------------
485 void AliMUONDigitizer::CleanupArrays()
487 // The arrays fTDList and fHitMap are deleted and the pointers set to NULL.
489 if (GetDebug() > 1) Info("CleanupArrays", "Deleting internal arrays.");
490 for(Int_t i = 0; i < 2*AliMUONConstants::NCh(); i++)
492 if (GetDebug() > 3) Info("CleanupArrays", "Deleting hit map for chamber %d, cathode %d.",
493 i%AliMUONConstants::NCh()+1, i/AliMUONConstants::NCh()+1);
499 if (GetDebug() > 3) Info("CleanupArrays", "Deleting transient digits list.");
505 //------------------------------------------------------------------------
506 void AliMUONDigitizer::SortTracks(Int_t *tracks, Int_t *charges, Int_t ntr)
509 // Sort the list of tracks contributing to a given digit
510 // Only the 3 most significant tracks are actually sorted
513 if (ntr <= 1) return;
516 // Loop over signals, only 3 times
521 Int_t idx[3] = {-2,-2,-2};
522 Int_t jch[3] = {-2,-2,-2};
523 Int_t jtr[3] = {-2,-2,-2};
526 if (ntr < 3) imax = ntr;
529 for(i = 0; i < imax; i++)
534 for(j = 0; j < ntr; j++)
536 if ( (i == 1 && j == idx[i-1]) ||
537 (i == 2 && (j == idx[i-1] || j == idx[i-2]))
541 if(charges[j] > qmax)
551 jch[i] = charges[jmax];
552 jtr[i] = tracks[jmax];
557 for(i = 0; i < 3; i++)