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 "AliMUONSegmentation.h"
27 #include "AliMUONHitMapA1.h"
29 #include "AliMUONLoader.h"
30 #include "AliMUONConstants.h"
31 #include "AliMUONTransientDigit.h"
32 #include "AliMUONTriggerDecision.h"
34 #include "AliMUONGeometryTransformer.h"
35 #include "AliMUONGeometryModule.h"
36 #include "AliMUONGeometryStore.h"
38 /////////////////////////////////////////////////////////////////////////////////////
40 // AliMUONDigitizer should be base abstract class of all digitisers in the MUON
41 // module. It implements the common functionality of looping over input streams
42 // filling the fTDList and writing the fTDList to the output stream.
43 // Inheriting digitizers need to override certain methods to choose and initialize
44 // the correct input and output trees, apply the correct detector response if any
45 // and implement how the transient digits are generated from the input stream.
47 /////////////////////////////////////////////////////////////////////////////////////
49 ClassImp(AliMUONDigitizer)
51 //___________________________________________
52 AliMUONDigitizer::AliMUONDigitizer() :
60 // Default constructor.
61 // Initializes all pointers to NULL.
70 //___________________________________________
71 AliMUONDigitizer::AliMUONDigitizer(AliRunDigitizer* manager) :
72 AliDigitizer(manager),
79 // Constructor which should be used rather than the default constructor.
80 // Initializes all pointers to NULL.
89 //___________________________________________
90 AliMUONDigitizer::AliMUONDigitizer(const AliMUONDigitizer& rhs)
93 // Protected copy constructor
95 AliFatal("Not implemented.");
98 //___________________________________________
99 AliMUONDigitizer::~AliMUONDigitizer()
109 //-------------------------------------------------------------------
111 AliMUONDigitizer::operator=(const AliMUONDigitizer& rhs)
113 // Protected assignement operator
115 if (this == &rhs) return *this;
117 AliFatal("Not implemented.");
122 //------------------------------------------------------------------------
123 Bool_t AliMUONDigitizer::Init()
129 //------------------------------------------------------------------------
130 void AliMUONDigitizer::Exec(Option_t* /*option*/)
132 // The main work loop starts here.
133 // The digitization process is broken up into two steps:
134 // 1) Loop over input streams and create transient digits from the input.
135 // Done in GenerateTransientDigits()
136 // 2) Loop over the generated transient digits and write them to the output
137 // stream. Done in CreateDigits()
139 AliDebug(1, "Running digitiser.");
141 if (fManager->GetNinputs() == 0)
143 AliWarning("No inputs set, nothing to do.");
147 if (!FetchLoaders(fManager->GetInputFolderName(0), fRunLoader, fGime) ) return;
148 if (! FetchGlobalPointers(fRunLoader) ) return;
149 if (! FetchTriggerPointer(fGime) ) return;
153 AliDebug(2, Form("Event Number is %d.", fManager->GetOutputEventNr()));
155 // Loop over files to merge and to digitize
157 for (Int_t inputFile = 0; inputFile < fManager->GetNinputs(); inputFile++)
159 fMask = fManager->GetMask(inputFile);
160 AliDebug(2, Form("Digitising folder %d, with fMask = %d: %s", inputFile, fMask,
161 (const char*)fManager->GetInputFolderName(inputFile)));
164 // If this is the first file then we already have the loaders loaded.
165 if (! FetchLoaders(fManager->GetInputFolderName(inputFile), fRunLoader, fGime) )
168 // If this is not the first file then it is assumed to be background.
171 if (! InitInputData(fGime) ) continue;
172 GenerateTransientDigits();
173 CleanupInputData(fGime);
176 Bool_t ok = FetchLoaders(fManager->GetOutputFolderName(), fRunLoader, fGime);
177 if (ok) ok = InitOutputData(fGime);
178 if (ok) CreateDigits();
179 if (ok) CreateTrigger();
180 if (ok) CleanupOutputData(fGime);
183 CleanupTriggerArrays();
186 //--------------------------------------------------------------------------
187 void AliMUONDigitizer::AddOrUpdateTransientDigit(AliMUONTransientDigit* mTD)
189 // Checks to see if the transient digit exists in the corresponding fHitMap.
190 // If it does then the digit is updated otherwise it is added.
192 if (ExistTransientDigit(mTD))
194 UpdateTransientDigit(mTD);
195 delete mTD; // The new digit can be deleted because it was not added.
198 AddTransientDigit(mTD);
201 //------------------------------------------------------------------------
202 void AliMUONDigitizer::UpdateTransientDigit(AliMUONTransientDigit* mTD)
204 // Update the transient digit that is already in the fTDList by adding the new
205 // transient digits charges and track lists to the existing one.
207 AliDebug(4,Form( "Updating transient digit 0x%X", (void*)mTD));
208 // Choosing the maping of the cathode plane of the chamber:
209 Int_t detElemId = mTD->DetElemId();
211 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) * AliMUONConstants::NDetElem();
213 AliMUONTransientDigit *pdigit =
214 static_cast<AliMUONTransientDigit*>( fHitMap[iNchCpl]->GetHit(mTD->PadX(),mTD->PadY()) );
217 pdigit->AddSignal( mTD->Signal() );
218 pdigit->AddPhysicsSignal( mTD->Physics() );
220 // update list of tracks
221 Int_t ntracks = mTD->GetNTracks();
222 if (ntracks > kMAXTRACKS) // Truncate the number of tracks to kMAXTRACKS if we have to.
225 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
227 AliDebug(1,Form( "Reseting the number of tracks to be %d.", kMAXTRACKS));
228 ntracks = kMAXTRACKS;
231 for (Int_t i = 0; i < ntracks; i++)
233 pdigit->UpdateTrackList( mTD->GetTrack(i), mTD->GetCharge(i) );
237 //------------------------------------------------------------------------
238 void AliMUONDigitizer::AddTransientDigit(AliMUONTransientDigit* mTD)
240 // Adds the transient digit to the fTDList and sets the appropriate entry
241 // in the fHitMap arrays.
243 AliDebug(4,Form( "Adding transient digit 0x%X", (void*)mTD));
244 // Choosing the maping of the cathode plane of the chamber:
246 Int_t detElemId = mTD->DetElemId();
247 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) * AliMUONConstants::NDetElem();
249 fTDList->AddAtAndExpand(mTD, fTDCounter);
250 if (iNchCpl>-1 && iNchCpl<2*AliMUONConstants::NDetElem()) {
251 fHitMap[iNchCpl]->SetHit( mTD->PadX(), mTD->PadY(), fTDCounter);
256 //------------------------------------------------------------------------
257 Bool_t AliMUONDigitizer::ExistTransientDigit(AliMUONTransientDigit* mTD)
259 // Checks if the transient digit already exists on the corresponding fHitMap.
260 // i.e. is there a transient digit on the same chamber, cathode and pad position
261 // as mTD. If yes then kTRUE is returned else kFASLE is returned.
263 // Choosing the maping of the cathode plane of the chamber:
264 Int_t detElemId = mTD->DetElemId();
266 Int_t iNchCpl= fNDetElemId[detElemId] + (mTD->Cathode()-1) *AliMUONConstants::NDetElem() ;
268 // Int_t iNchCpl= mTD->Chamber() + (mTD->Cathode()-1) * AliMUONConstants::NCh();
269 if (iNchCpl>-1 && iNchCpl<2*AliMUONConstants::NDetElem())
270 return( fHitMap[iNchCpl]->TestHit(mTD->PadX(), mTD->PadY()) );
274 //-----------------------------------------------------------------------
275 void AliMUONDigitizer::CreateDigits()
277 // Loops over the fTDList for each cathode, gets the correct signal for the
278 // digit and adds the new digit to the output stream.
280 fTDList->Sort(); // sort by idDE
281 AliDebug(2, "Creating digits...");
282 // for (Int_t icat = 0; icat < 2; icat++) {
284 Int_t digitindex[14] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
287 // Filling Digit List
288 Int_t nentries = fTDList->GetEntriesFast();
289 for (Int_t nent = 0; nent < nentries; nent++) {
291 AliMUONTransientDigit* td = (AliMUONTransientDigit*)fTDList->At(nent);
292 if (td == NULL) continue;
294 // Must be the same cathode, otherwise we will fill a mixture
295 // of digits from both cathodes.
296 //if (icat != td->Cathode() - 1) continue;
298 AliDebug(3,Form( "Creating digit from transient digit 0x%X", (void*)td));
300 Int_t q = GetSignalFrom(td);
301 assert( 0 <= td->Chamber() && td->Chamber() <= 13 );
302 if (q > 0) AddDigit(td, q, digitindex[td->Chamber()]++);
309 //------------------------------------------------------------------------
310 void AliMUONDigitizer::AddDigit(
311 AliMUONTransientDigit* td, Int_t responseCharge,
315 // Prepares the digits, track and charge arrays in preparation for a call to
316 // AddDigit(Int_t, Int_t[kMAXTRACKS], Int_t[kMAXTRACKS], Int_t[6])
317 // This method is called by CreateDigits() whenever a new digit needs to be added
318 // to the output stream trees.
319 // The responseCharge value is used as the Signal of the new digit.
320 // The OnWriteTransientDigit method is also called just before the adding the
321 // digit to allow inheriting digitizers to be able to do some specific processing
324 Int_t tracks[kMAXTRACKS];
325 Int_t charges[kMAXTRACKS];
328 digits[0] = td->PadX();
329 digits[1] = td->PadY();
330 digits[2] = td->Cathode() - 1;
331 digits[3] = responseCharge;
332 digits[4] = td->Physics();
333 digits[5] = td->Hit();
334 digits[6] = td->DetElemId();
336 Int_t nptracks = td->GetNTracks();
337 if (nptracks > kMAXTRACKS) {
340 "TransientDigit returned the number of tracks to be %d, which is bigger than kMAXTRACKS.",
342 AliDebug(1, Form("Reseting the number of tracks to be %d.", kMAXTRACKS));
343 nptracks = kMAXTRACKS;
346 for (Int_t i = 0; i < nptracks; i++) {
348 tracks[i] = td->GetTrack(i);
349 charges[i] = td->GetCharge(i);
352 // Sort list of tracks according to charge
353 SortTracks(tracks,charges,nptracks);
355 if (nptracks < kMAXTRACKS ) {
357 for (Int_t i = nptracks; i < kMAXTRACKS; i++) {
363 AliDebug(4,Form( "Adding digit with charge %d.", responseCharge));
365 OnWriteTransientDigit(td);
366 AddDigit(td->Chamber(), tracks, charges, digits);
367 AddDigitTrigger(td->Chamber(), tracks, charges, digits, digitindex);
370 //------------------------------------------------------------------------
371 void AliMUONDigitizer::OnCreateTransientDigit(AliMUONTransientDigit* /*digit*/, TObject* /*source_object*/)
375 // This is derived by Digitisers that want to trace which digits were made from
379 //------------------------------------------------------------------------
380 void AliMUONDigitizer::OnWriteTransientDigit(AliMUONTransientDigit* /*digit*/)
384 // This is derived by Digitisers that want to trace which digits were made from
388 //------------------------------------------------------------------------
389 Bool_t AliMUONDigitizer::FetchLoaders(const char* foldername, AliRunLoader*& runloader, AliMUONLoader*& muonloader)
391 // Fetches the run loader from the current folder, specified by 'foldername'.
392 // The muon loader is then loaded from the fetched run loader.
393 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
395 AliDebug(3, Form("Fetching run loader and muon loader from folder: %s", foldername));
397 runloader = AliRunLoader::GetRunLoader(foldername);
398 if (runloader == NULL)
400 AliError(Form("RunLoader not found in folder: %s", foldername));
403 muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
404 if (muonloader == NULL)
406 AliError(Form("MUONLoader not found in folder: %s", foldername));
413 //------------------------------------------------------------------------
414 Bool_t AliMUONDigitizer::FetchGlobalPointers(AliRunLoader* runloader)
416 // Fetches the AliRun object into the global gAlice pointer from the specified
417 // run loader. The AliRun object is loaded into memory using the run loader if
418 // not yet loaded. The MUON module object is then loaded from gAlice and
419 // AliMUONData fetched from the MUON module.
420 // kTRUE is returned if no error occurred otherwise kFALSE is returned.
422 AliDebug(3, Form("Fetching gAlice, MUON module and AliMUONData from runloader 0x%X.",
426 if (runloader->GetAliRun() == NULL) runloader->LoadgAlice();
427 gAlice = runloader->GetAliRun();
430 AliError(Form("Could not find the AliRun object in runloader 0x%X.", (void*)runloader));
433 fMUON = (AliMUON*) gAlice->GetDetector("MUON");
436 AliError(Form("Could not find the MUON module in runloader 0x%X.", (void*)runloader));
440 AliMUONLoader *muonloader = (AliMUONLoader*) runloader->GetLoader("MUONLoader");
441 if (muonloader == NULL)
443 AliError( "MUONLoader not found ");
448 if (fMUONData == NULL) fMUONData = new AliMUONData(muonloader,"MUON","MUON");
449 if (fMUONData == NULL)
451 AliError(Form("Could not find AliMUONData object in runloader 0x%X.", (void*)runloader));
457 //-----------------------------------------------------------------------
458 Bool_t AliMUONDigitizer::FetchTriggerPointer(AliMUONLoader* loader)
460 if (fMUONData == NULL) {
461 AliError("MUONData not found");
465 if (fTrigDec == NULL)
466 fTrigDec = new AliMUONTriggerDecision(loader,0,fMUONData);
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::NDetElem()];
488 for (Int_t i=0; i<2*AliMUONConstants::NDetElem(); i++) fHitMap[i] = 0x0;
493 for (Int_t i = 0; i < AliMUONConstants::NCh(); i++) {
496 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 1.", i+1));
497 AliMUONSegmentation* segmentation = fMUON->GetSegmentation();
498 AliMUONGeometrySegmentation* c1Segmentation
499 = segmentation->GetModuleSegmentation(i, 0); // Cathode plane 1
500 AliDebug(4,Form( "Creating hit map for chamber %d, cathode 2.", i+1));
501 AliMUONGeometrySegmentation* c2Segmentation
502 = segmentation->GetModuleSegmentation(i, 1); // Cathode plane 2
504 const AliMUONGeometryTransformer* kGeometryTransformer
505 = fMUON->GetGeometryTransformer();
507 AliMUONGeometryStore* detElements
508 = kGeometryTransformer->GetModuleTransformer(i)->GetDetElementStore();
511 // Loop over detection elements
512 for (Int_t j=0; j<detElements->GetNofEntries(); j++) {
514 idDE = detElements->GetEntry(j)->GetUniqueID();
515 fNDetElemId[idDE] = k;
517 fHitMap[k] = new AliMUONHitMapA1(idDE,c1Segmentation, fTDList);
519 fHitMap[k+AliMUONConstants::NDetElem()] = new AliMUONHitMapA1(idDE,c2Segmentation, fTDList);
524 //------------------------------------------------------------------------
525 void AliMUONDigitizer::CleanupArrays()
527 // The arrays fTDList and fHitMap are deleted and the pointers set to NULL.
529 AliDebug(2, "Deleting internal arrays.");
530 for(Int_t i = 0; i < 2*AliMUONConstants::NDetElem(); i++) {
536 AliDebug(4, "Deleting transient digits list.");
543 //------------------------------------------------------------------------
544 void AliMUONDigitizer::SortTracks(Int_t *tracks, Int_t *charges, Int_t ntr) const
547 // Sort the list of tracks contributing to a given digit
548 // Only the 3 most significant tracks are actually sorted
551 if (ntr <= 1) return;
554 // Loop over signals, only 3 times
559 Int_t idx[3] = {-2,-2,-2};
560 Int_t jch[3] = {-2,-2,-2};
561 Int_t jtr[3] = {-2,-2,-2};
564 if (ntr < 3) imax = ntr;
567 for(i = 0; i < imax; i++)
572 for(j = 0; j < ntr; j++)
574 if ( (i == 1 && j == idx[i-1]) ||
575 (i == 2 && (j == idx[i-1] || j == idx[i-2]))
579 if(charges[j] > qmax)
589 jch[i] = charges[jmax];
590 jtr[i] = tracks[jmax];
595 for(i = 0; i < 3; i++)