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 **************************************************************************/
16 //_________________________________________________________________________//
18 // This is a TTask that makes TOF-Digits out of TOF-SDigits. //
19 // The simulation of the detector is performed at sdigits level: //
20 // during digitization the unique task is the sum of all sdigits in the //
22 // Digits are written to TreeD in branch "TOF". //
24 // -- Author : F. Pierella (Bologna University) pierella@bo.infn.it //
26 //_________________________________________________________________________//
28 //#include "Riostream.h"
34 #include "TObjArray.h"
36 #include "AliLoader.h"
38 #include "AliRunDigitizer.h"
39 #include "AliRunLoader.h"
42 #include "AliTOFcalib.h"
43 //#include "AliTOFChannelOnline.h"
44 #include "AliTOFChannelOffline.h"
45 #include "AliTOFDigitizer.h"
46 #include "AliTOFdigit.h"
47 #include "AliTOFHitMap.h"
48 #include "AliTOFGeometry.h"
49 #include "AliTOFSDigit.h"
52 extern TDirectory *gDirectory;
53 //extern TFile *gFile;
54 extern TRandom *gRandom;
56 extern AliRun *gAlice;
59 ClassImp(AliTOFDigitizer)
61 //___________________________________________
62 AliTOFDigitizer::AliTOFDigitizer() :
64 fDigits(new TClonesArray("AliTOFdigit",4000)),
65 fSDigitsArray(new TClonesArray("AliTOFSDigit",1000)),
67 fCalib(new AliTOFcalib())
69 // Default ctor - don't use it
73 //___________________________________________
74 AliTOFDigitizer::AliTOFDigitizer(AliRunDigitizer* manager):
75 AliDigitizer(manager),
76 fDigits(new TClonesArray("AliTOFdigit",4000)),
77 fSDigitsArray(new TClonesArray("AliTOFSDigit",1000)),
79 fCalib(new AliTOFcalib())
81 //ctor with RunDigitizer
85 //------------------------------------------------------------------------
86 AliTOFDigitizer::AliTOFDigitizer(const AliTOFDigitizer &source):
88 fDigits(source.fDigits),
89 fSDigitsArray(source.fSDigitsArray),
90 fhitMap(source.fhitMap),
96 //------------------------------------------------------------------------
97 AliTOFDigitizer& AliTOFDigitizer::operator=(const AliTOFDigitizer &source)
104 AliDigitizer::operator=(source);
105 fDigits=source.fDigits;
106 fSDigitsArray=source.fSDigitsArray;
107 fhitMap=source.fhitMap;
108 fCalib=source.fCalib;
113 //------------------------------------------------------------------------
114 AliTOFDigitizer::~AliTOFDigitizer()
124 fSDigitsArray->Delete();
125 delete fSDigitsArray;
130 //---------------------------------------------------------------------
132 void AliTOFDigitizer::Exec(Option_t* /*option*/)
135 // Perform digitization and merging.
136 // The algorithm is the following:
137 // - a hitmap is created to check if a pad is already activated;
138 // - an sdigits container is created to collect all sdigits from
140 // - sdigits are summed using the hitmap;
141 // - the sdigits container is used to create the array of AliTOFdigit.
147 // get the ptr to TOF detector
148 AliTOF * tof = (AliTOF *) gAlice->GetDetector("TOF") ;
152 sprintf (branchname, "%s", tof->GetName ());
154 AliRunLoader* outrl = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
157 AliError("Can not find Run Loader in output folder.");
163 TFile *in=(TFile*)gFile;
164 TDirectory *savedir=gDirectory;
167 //when fGeom was needed
170 AliWarning("Geometry file is not open default TOF geometry will be used");
171 fGeom = new AliTOFGeometry();
175 fGeom = (AliTOFGeometry*)in->Get("TOFgeometry");
180 AliLoader* outgime = outrl->GetLoader("TOFLoader");
183 AliError("Can not get TOF Loader from Output Run Loader.");
187 TTree* treeD = outgime->TreeD();
190 outgime->MakeTree("D");
191 treeD = outgime->TreeD();
193 //Make branch for digits (to be created in Init())
194 tof->MakeBranchInTree(treeD,branchname,&fDigits,4000);
196 // container for all summed sdigits (to be created in Init())
197 //fSDigitsArray=new TClonesArray("AliTOFSDigit",1000);
199 // create hit map (to be created in Init())
200 fhitMap = new AliTOFHitMap(fSDigitsArray);
202 // Loop over files to digitize
204 for (Int_t inputFile=0; inputFile<fManager->GetNinputs();
206 ReadSDigit(inputFile);
212 // free used memory for Hit Map in current event
214 fSDigitsArray->Clear();
218 outgime->WriteDigits("OVERWRITE");
219 outgime->UnloadDigits();
224 //---------------------------------------------------------------------
226 void AliTOFDigitizer::CreateDigits()
228 // loop on sdigits container to fill the AliTOFdigit TClonesArray
229 // start digitizing all the collected sdigits
231 Int_t ndump=0; // dump the first ndump created digits for each event
233 // get the total number of collected sdigits
234 Int_t ndig = fSDigitsArray->GetEntriesFast();
236 for (Int_t k = 0; k < ndig; k++) {
238 Int_t vol[5]; // location for a digit
239 for (Int_t i=0; i<5; i++) vol[i] = -1;
241 // Get the information for this digit
242 AliTOFSDigit *tofsdigit = (AliTOFSDigit *) fSDigitsArray->UncheckedAt(k);
244 Int_t nslot=tofsdigit->GetNDigits(); // get the number of slots
245 // for current sdigit
247 // TOF sdigit volumes (always the same for all slots)
248 Int_t sector = tofsdigit->GetSector(); // range [0-17]
249 Int_t plate = tofsdigit->GetPlate(); // range [0- 4]
250 Int_t strip = tofsdigit->GetStrip(); // range [0-14/18/19]
251 Int_t padz = tofsdigit->GetPadz(); // range [0- 1]
252 Int_t padx = tofsdigit->GetPadx(); // range [0-47]
260 //--------------------- QA section ----------------------
261 // in the while, I perform QA
262 Bool_t isSDigitBad = (sector<0 || sector>17 || plate<0 || plate >4 || padz<0 || padz>1 || padx<0 || padx>47);
265 //AliFatal("strange sdigit found");
266 AliFatal(Form("strange sdigit found %3i %2i %2i %3i %3i", sector, plate, padz, padx, strip));
268 //-------------------------------------------------------
270 //------------------- Dump section ----------------------
272 AliInfo(Form("%2i-th | Sector %2i | Plate %1i | Strip %2i | PadZ %1i | PadX %2i ", k, sector, plate, strip, padz, padx));
273 AliInfo(Form("%2i-th", k));
274 AliInfo("----------------------------------------------------");
276 // ------------------------------------------------------
278 // start loop on number of slots for current sdigit
279 for (Int_t islot = 0; islot < nslot; islot++) {
280 Int_t digit[4] = {-1,-1,-1,-1}; // TOF digit variables
281 Int_t tracknum[AliTOFSDigit::kMAXDIGITS]; // contributing tracks for the current slot
283 Int_t tdc=tofsdigit->GetTdc(islot); digit[0]=tdc;
284 Int_t adc=tofsdigit->GetAdc(islot); digit[1]=adc;
286 //if (tdc>=8192) continue;//AdC
288 tracknum[0]=tofsdigit->GetTrack(islot,0);
289 tracknum[1]=tofsdigit->GetTrack(islot,1);
290 tracknum[2]=tofsdigit->GetTrack(islot,2);
292 // new with placement must be used
293 // adding a TOF digit for each slot
294 TClonesArray &aDigits = *fDigits;
295 Int_t last=fDigits->GetEntriesFast();
296 new (aDigits[last]) AliTOFdigit(tracknum, vol, digit);
300 } // end loop on sdigits - end digitizing all collected sdigits
302 //Insert Decalibration
303 AliInfo("in digitizer, create digits");
304 DecalibrateTOFSignal();
307 //---------------------------------------------------------------------
309 void AliTOFDigitizer::ReadSDigit(Int_t inputFile )
311 // Read sdigits for current event and inputFile;
312 // store them into the sdigits container
313 // and update the hit map
314 // SDigits from different files are assumed to
315 // be created with the same simulation parameters.
317 // creating the TClonesArray to store the digits
318 static TClonesArray sdigitsClonesArray("AliTOFSDigit", 1000);
319 sdigitsClonesArray.Clear();
321 // get the treeS from manager
322 AliRunLoader* rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
325 AliError(Form("Can not find Run Loader in input %d folder.",inputFile));
329 AliLoader* gime = rl->GetLoader("TOFLoader");
332 AliError(Form("Can not get TOF Loader from Input %d Run Loader.",inputFile));
336 TTree* currentTreeS=gime->TreeS();
337 if (currentTreeS == 0x0)
339 Int_t retval = gime->LoadSDigits();
342 AliError(Form("Error occured while loading S. Digits for Input %d",inputFile));
345 currentTreeS=gime->TreeS();
346 if (currentTreeS == 0x0)
348 AliError(Form("Can not get S. Digits Tree for Input %d",inputFile));
352 // get the branch TOF inside the treeS
353 TClonesArray * sdigitsDummyContainer=&sdigitsClonesArray;
354 // check if the branch exist
355 TBranch* tofBranch=currentTreeS->GetBranch("TOF");
358 AliFatal(Form("TOF branch not found for input %d",inputFile));
361 tofBranch->SetAddress(&sdigitsDummyContainer);
363 Int_t nEntries = (Int_t)tofBranch->GetEntries();
365 // Loop through all entries in the tree
368 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
371 nbytes += tofBranch->GetEvent(iEntry);
373 // Get the number of sdigits
374 Int_t ndig = sdigitsDummyContainer->GetEntriesFast();
376 for (Int_t k=0; k<ndig; k++) {
377 AliTOFSDigit *tofSdigit= (AliTOFSDigit*) sdigitsDummyContainer->UncheckedAt(k);
379 Int_t vol[5]; // location for a sdigit
380 for (Int_t i=0; i<5; i++) vol[i] = -1;
382 // check the sdigit volume
383 vol[0] = tofSdigit->GetSector();
384 vol[1] = tofSdigit->GetPlate();
385 vol[2] = tofSdigit->GetStrip();
386 vol[3] = tofSdigit->GetPadx();
387 vol[4] = tofSdigit->GetPadz();
389 if (fhitMap->TestHit(vol) != kEmpty) {
390 AliTOFSDigit *sdig = static_cast<AliTOFSDigit*>(fhitMap->GetHit(vol));
391 sdig->Update(tofSdigit);
395 CollectSDigit(tofSdigit); // collect the current sdigit
396 fhitMap->SetHit(vol); // update the hitmap for location vol
398 } // if (hitMap->TestHit(vol) != kEmpty)
400 } // for (Int_t k=0; k<ndig; k++)
402 } // end loop on entries
407 //_____________________________________________________________________________
408 void AliTOFDigitizer::CollectSDigit(AliTOFSDigit * sdigit)
411 // Add a TOF sdigit in container
412 // new with placement must be used
413 TClonesArray &aSDigitsArray = *fSDigitsArray;
414 Int_t last=fSDigitsArray->GetEntriesFast();
415 // make a copy of the current sdigit and
416 // put it into tmp array
417 new (aSDigitsArray[last]) AliTOFSDigit(*sdigit);
420 //_____________________________________________________________________________
421 void AliTOFDigitizer::InitDecalibration() const {
426 fCalib->CreateCalArrays();
427 fCalib->ReadSimHistoFromCDB("TOF/Calib", -1); // use AliCDBManager's number
428 fCalib->ReadParOfflineFromCDB("TOF/Calib", -1); // use AliCDBManager's number
430 //---------------------------------------------------------------------
431 void AliTOFDigitizer::DecalibrateTOFSignal(){
433 // Read Calibration parameters from the CDB
435 TObjArray * calOffline= fCalib->GetTOFCalArrayOffline();
437 AliDebug(2,Form("Size of array for Offline Calibration = %i",calOffline->GetEntries()));
439 // Initialize Quantities to Simulate ToT Spectra
441 TH1F * hToT= fCalib->GetTOFSimToT();
442 Int_t nbins = hToT->GetNbinsX();
443 Float_t delta = hToT->GetBinWidth(1);
444 Float_t maxch = hToT->GetBinLowEdge(nbins)+delta;
445 Float_t minch = hToT->GetBinLowEdge(1);
446 Float_t max=0,min=0; //maximum and minimum value of the distribution
447 Int_t maxbin=0,minbin=0; //maximum and minimum bin of the distribution
449 for (Int_t ii=nbins; ii>0; ii--){
450 if (hToT->GetBinContent(ii)!= 0) {
451 max = maxch - (nbins-ii-1)*delta;
455 for (Int_t j=1; j<nbins; j++){
456 if (hToT->GetBinContent(j)!= 0) {
457 min = minch + (j-1)*delta;
465 Float_t maxToTDistr=hToT->GetMaximum();
467 AliDebug (1, Form(" The minimum ToT = %f", minToT));
468 AliDebug (1, Form(" The maximum ToT = %f", maxToT));
469 AliDebug (1, Form(" The maximum peak in ToT = %f", maxToTDistr));
471 // Loop on TOF Digits
473 Bool_t isToTSimulated=kFALSE;
474 Bool_t misCalibPars=kFALSE;
475 if(hToT->GetEntries()>0)isToTSimulated=kTRUE;
476 Int_t ndigits = fDigits->GetEntriesFast();
477 for (Int_t i=0;i<ndigits;i++){
478 AliTOFdigit * dig = (AliTOFdigit*)fDigits->At(i);
480 detId[0] = dig->GetSector();
481 detId[1] = dig->GetPlate();
482 detId[2] = dig->GetStrip();
483 detId[3] = dig->GetPadz();
484 detId[4] = dig->GetPadx();
485 dig->SetTdcND(dig->GetTdc()); // save the non decalibrated time
488 //A realistic ToT Spectrum was found in input,
489 //decalibrated TOF Digits likely to be simulated....
491 Int_t index = AliTOFGeometry::GetIndex(detId); // The channel index
492 AliTOFChannelOffline *calChannelOffline = (AliTOFChannelOffline *)calOffline->At(index); //retrieve the info for time slewing
493 Double_t par[6]; // time slewing parameters
495 //check whether we actually ask for miscalibration
497 for (Int_t j = 0; j<6; j++){
498 par[j]=(Double_t)calChannelOffline->GetSlewPar(j);
499 if(par[j]!=0)misCalibPars=kTRUE;
501 AliDebug(2,Form(" Calib Pars = %f (0-th parameter for time slewing + time delay), %f, %f, %f, %f, %f ",par[0],par[1],par[2],par[3],par[4],par[5]));
503 // Now generate Realistic ToT distribution from TestBeam Data.
504 // Tot is in ns, assuming a Matching Window of 10 ns.
511 while (simToT <= triy){
512 trix = gRandom->Rndm(i);
513 triy = gRandom->Rndm(i);
514 trix = (maxToT-minToT)*trix + minToT;
515 triy = maxToTDistr*triy;
516 Int_t binx=hToT->FindBin(trix);
517 simToT=hToT->GetBinContent(binx);
519 // the generated ToT (ns)
520 tToT= (Double_t) trix; // to apply slewing we start from ns..
521 // transform TOF signal in ns
522 AliDebug(2,Form(" The Initial Time (counts): %i: ",dig->GetTdc()));
523 AliDebug(2,Form(" Time before miscalibration (ps) %e: ",dig->GetTdc()*(Double_t)AliTOFGeometry::TdcBinWidth()));
524 // add slewing effect
525 timeCorr=par[0] + tToT*(par[1] +tToT*(par[2] +tToT*(par[3] +tToT*(par[4] +tToT*par[5]))));
526 AliDebug(2,Form(" The Time slewing + delay (ns): %f: ",timeCorr));
527 // add global time shift
530 Double_t timeMis = (Double_t)(dig->GetTdc())*(Double_t)AliTOFGeometry::TdcBinWidth();
531 timeMis = timeMis+timeCorr;
532 AliDebug(2,Form(" The Miscalibrated time (ps): %e: ",timeMis));
534 // now update the digit info
536 Int_t tdcCorr= (Int_t)(timeMis/AliTOFGeometry::TdcBinWidth());
537 AliDebug(2,Form(" Final Time (counts): %i: ",tdcCorr));
538 // Setting Decalibrated Time signal (TDC counts)
539 dig->SetTdc(tdcCorr);
540 // Setting realistic ToT signal (TDC counts)
541 tToT*=1E3; //back to ps
542 Int_t tot=(Int_t)(tToT/AliTOFGeometry::ToTBinWidth());//(factor 1E3 as input ToT is in ns)
544 AliDebug(2,Form(" Final Time and ToT (counts): %i: , %i:",dig->GetTdc(),dig->GetToT()));
546 AliWarning (Form(" The bad Slewed Time(TDC counts)= %i ", tdcCorr));
547 AliWarning(Form(" The bad ToT (TDC counts)= %i ", tot));
551 // For Data with no Miscalibration, set ToT signal == Adc
552 dig->SetToT((Int_t)(dig->GetAdc()/AliTOFGeometry::ToTBinWidth())); //remove the factor 10^3 just to have a reasonable ToT range for raw data simulation even in the case of non-realistic ToT distribution (n.b. fAdc is practically an arbitrary quantity, and ToT has no impact on the TOF reco for non-miscalibrated digits)
557 AliDebug(1,"Standard Production, no miscalibrated digits");
560 AliDebug(1,"Standard Production, no miscalibrated digits");
563 AliDebug(1,"Simulating miscalibrated digits");