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.");
161 AliLoader* outgime = outrl->GetLoader("TOFLoader");
164 AliError("Can not get TOF Loader from Output Run Loader.");
168 TTree* treeD = outgime->TreeD();
171 outgime->MakeTree("D");
172 treeD = outgime->TreeD();
174 //Make branch for digits (to be created in Init())
175 tof->MakeBranchInTree(treeD,branchname,&fDigits,4000);
177 // container for all summed sdigits (to be created in Init())
178 //fSDigitsArray=new TClonesArray("AliTOFSDigit",1000);
180 // create hit map (to be created in Init())
181 fhitMap = new AliTOFHitMap(fSDigitsArray);
183 // Loop over files to digitize
185 for (Int_t inputFile=0; inputFile<fManager->GetNinputs();
187 ReadSDigit(inputFile);
193 // free used memory for Hit Map in current event
195 fSDigitsArray->Clear();
199 AliDebug(2,"----------------------------------------");
200 AliDebug(1,Form("%d digits have been created", fDigits->GetEntriesFast()));
201 AliDebug(2,"----------------------------------------");
203 outgime->WriteDigits("OVERWRITE");
204 outgime->UnloadDigits();
209 //---------------------------------------------------------------------
211 void AliTOFDigitizer::CreateDigits()
213 // loop on sdigits container to fill the AliTOFdigit TClonesArray
214 // start digitizing all the collected sdigits
216 Int_t ndump=0; // dump the first ndump created digits for each event
218 // get the total number of collected sdigits
219 Int_t ndig = fSDigitsArray->GetEntriesFast();
221 for (Int_t k = 0; k < ndig; k++) {
223 Int_t vol[5]; // location for a digit
224 for (Int_t i=0; i<5; i++) vol[i] = -1;
226 // Get the information for this digit
227 AliTOFSDigit *tofsdigit = (AliTOFSDigit *) fSDigitsArray->UncheckedAt(k);
229 Int_t nslot=tofsdigit->GetNDigits(); // get the number of slots
230 // for current sdigit
232 // TOF sdigit volumes (always the same for all slots)
233 Int_t sector = tofsdigit->GetSector(); // range [0-17]
234 Int_t plate = tofsdigit->GetPlate(); // range [0- 4]
235 Int_t strip = tofsdigit->GetStrip(); // range [0-14/18/19]
236 Int_t padz = tofsdigit->GetPadz(); // range [0- 1]
237 Int_t padx = tofsdigit->GetPadx(); // range [0-47]
245 //--------------------- QA section ----------------------
246 // in the while, I perform QA
247 Bool_t isSDigitBad = (sector<0 || sector>17 || plate<0 || plate >4 || padz<0 || padz>1 || padx<0 || padx>47);
250 AliFatal(Form("strange sdigit found %2d %1d %2d %1d %2d", sector, plate, strip, padz, padx));
251 //-------------------------------------------------------
253 //------------------- Dump section ----------------------
255 AliInfo(Form("%2d-th digit: Sector %2d | Plate %1d | Strip %2d | PadZ %1d | PadX %2d ", k, sector, plate, strip, padz, padx));
256 AliInfo("----------------------------------------------------");
258 // ------------------------------------------------------
260 // start loop on number of slots for current sdigit
261 for (Int_t islot = 0; islot < nslot; islot++) {
262 Int_t digit[4] = {-1,-1,-1,-1}; // TOF digit variables
263 Int_t tracknum[AliTOFSDigit::kMAXDIGITS]; // contributing tracks for the current slot
265 Int_t tdc=tofsdigit->GetTdc(islot); digit[0]=tdc;
266 Int_t adc=tofsdigit->GetAdc(islot); digit[1]=adc;
268 //if (tdc>=8192) continue;//AdC
270 tracknum[0]=tofsdigit->GetTrack(islot,0);
271 tracknum[1]=tofsdigit->GetTrack(islot,1);
272 tracknum[2]=tofsdigit->GetTrack(islot,2);
274 // new with placement must be used
275 // adding a TOF digit for each slot
276 TClonesArray &aDigits = *fDigits;
277 Int_t last=fDigits->GetEntriesFast();
278 new (aDigits[last]) AliTOFdigit(tracknum, vol, digit);
282 } // end loop on sdigits - end digitizing all collected sdigits
284 //Insert Decalibration
285 AliDebug(2,"in digitizer, create digits");
286 DecalibrateTOFSignal();
289 //---------------------------------------------------------------------
291 void AliTOFDigitizer::ReadSDigit(Int_t inputFile )
293 // Read sdigits for current event and inputFile;
294 // store them into the sdigits container
295 // and update the hit map
296 // SDigits from different files are assumed to
297 // be created with the same simulation parameters.
299 // creating the TClonesArray to store the digits
300 static TClonesArray sdigitsClonesArray("AliTOFSDigit", 1000);
301 sdigitsClonesArray.Clear();
303 // get the treeS from manager
304 AliRunLoader* rl = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(inputFile));
307 AliError(Form("Can not find Run Loader in input %d folder.",inputFile));
311 AliLoader* gime = rl->GetLoader("TOFLoader");
314 AliError(Form("Can not get TOF Loader from Input %d Run Loader.",inputFile));
318 TTree* currentTreeS=gime->TreeS();
319 if (currentTreeS == 0x0)
321 Int_t retval = gime->LoadSDigits();
324 AliError(Form("Error occured while loading S. Digits for Input %d",inputFile));
327 currentTreeS=gime->TreeS();
328 if (currentTreeS == 0x0)
330 AliError(Form("Can not get S. Digits Tree for Input %d",inputFile));
334 // get the branch TOF inside the treeS
335 TClonesArray * sdigitsDummyContainer=&sdigitsClonesArray;
336 // check if the branch exist
337 TBranch* tofBranch=currentTreeS->GetBranch("TOF");
340 AliFatal(Form("TOF branch not found for input %d",inputFile));
343 tofBranch->SetAddress(&sdigitsDummyContainer);
345 Int_t nEntries = (Int_t)tofBranch->GetEntries();
347 // Loop through all entries in the tree
350 for (Int_t iEntry = 0; iEntry < nEntries; iEntry++) {
353 nbytes += tofBranch->GetEvent(iEntry);
355 // Get the number of sdigits
356 Int_t ndig = sdigitsDummyContainer->GetEntriesFast();
358 for (Int_t k=0; k<ndig; k++) {
359 AliTOFSDigit *tofSdigit= (AliTOFSDigit*) sdigitsDummyContainer->UncheckedAt(k);
361 Int_t vol[5]; // location for a sdigit
362 for (Int_t i=0; i<5; i++) vol[i] = -1;
364 // check the sdigit volume
365 vol[0] = tofSdigit->GetSector();
366 vol[1] = tofSdigit->GetPlate();
367 vol[2] = tofSdigit->GetStrip();
368 vol[3] = tofSdigit->GetPadx();
369 vol[4] = tofSdigit->GetPadz();
371 if (fhitMap->TestHit(vol) != kEmpty) {
372 AliTOFSDigit *sdig = static_cast<AliTOFSDigit*>(fhitMap->GetHit(vol));
373 sdig->Update(tofSdigit);
377 CollectSDigit(tofSdigit); // collect the current sdigit
378 fhitMap->SetHit(vol); // update the hitmap for location vol
380 } // if (hitMap->TestHit(vol) != kEmpty)
382 } // for (Int_t k=0; k<ndig; k++)
384 } // end loop on entries
389 //_____________________________________________________________________________
390 void AliTOFDigitizer::CollectSDigit(const AliTOFSDigit * const sdigit)
393 // Add a TOF sdigit in container
394 // new with placement must be used
395 TClonesArray &aSDigitsArray = *fSDigitsArray;
396 Int_t last=fSDigitsArray->GetEntriesFast();
397 // make a copy of the current sdigit and
398 // put it into tmp array
399 new (aSDigitsArray[last]) AliTOFSDigit(*sdigit);
402 //_____________________________________________________________________________
403 void AliTOFDigitizer::InitDecalibration() const {
405 // Initialize TOF digits decalibration
408 fCalib->CreateCalArrays();
409 fCalib->ReadSimHistoFromCDB("TOF/Calib", -1); // use AliCDBManager's number
410 fCalib->ReadParOfflineFromCDB("TOF/Calib", -1); // use AliCDBManager's number
412 //---------------------------------------------------------------------
413 void AliTOFDigitizer::DecalibrateTOFSignal(){
415 // Read Calibration parameters from the CDB
417 TObjArray * calOffline= fCalib->GetTOFCalArrayOffline();
419 AliDebug(2,Form("Size of array for Offline Calibration = %i",calOffline->GetEntries()));
421 // Initialize Quantities to Simulate ToT Spectra
423 TH1F * hToT= fCalib->GetTOFSimToT();
424 Int_t nbins = hToT->GetNbinsX();
425 Float_t delta = hToT->GetBinWidth(1);
426 Float_t maxch = hToT->GetBinLowEdge(nbins)+delta;
427 Float_t minch = hToT->GetBinLowEdge(1);
428 Float_t max=0,min=0; //maximum and minimum value of the distribution
429 Int_t maxbin=0,minbin=0; //maximum and minimum bin of the distribution
431 for (Int_t ii=nbins; ii>0; ii--){
432 if (hToT->GetBinContent(ii)!= 0) {
433 max = maxch - (nbins-ii-1)*delta;
437 for (Int_t j=1; j<nbins; j++){
438 if (hToT->GetBinContent(j)!= 0) {
439 min = minch + (j-1)*delta;
447 Float_t maxToTDistr=hToT->GetMaximum();
449 AliDebug (1, Form(" The minimum ToT = %f", minToT));
450 AliDebug (1, Form(" The maximum ToT = %f", maxToT));
451 AliDebug (1, Form(" The maximum peak in ToT = %f", maxToTDistr));
453 // Loop on TOF Digits
455 Bool_t isToTSimulated=kFALSE;
456 Bool_t misCalibPars=kFALSE;
457 if(hToT->GetEntries()>0)isToTSimulated=kTRUE;
458 Int_t ndigits = fDigits->GetEntriesFast();
459 for (Int_t i=0;i<ndigits;i++){
460 AliTOFdigit * dig = (AliTOFdigit*)fDigits->At(i);
462 detId[0] = dig->GetSector();
463 detId[1] = dig->GetPlate();
464 detId[2] = dig->GetStrip();
465 detId[3] = dig->GetPadz();
466 detId[4] = dig->GetPadx();
467 dig->SetTdcND(dig->GetTdc()); // save the non decalibrated time
470 //A realistic ToT Spectrum was found in input,
471 //decalibrated TOF Digits likely to be simulated....
473 Int_t index = AliTOFGeometry::GetIndex(detId); // The channel index
474 AliTOFChannelOffline *calChannelOffline = (AliTOFChannelOffline *)calOffline->At(index); //retrieve the info for time slewing
475 Double_t par[6]; // time slewing parameters
477 //check whether we actually ask for miscalibration
479 for (Int_t j = 0; j<6; j++){
480 par[j]=(Double_t)calChannelOffline->GetSlewPar(j);
481 if(par[j]!=0)misCalibPars=kTRUE;
483 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]));
485 // Now generate Realistic ToT distribution from TestBeam Data.
486 // Tot is in ns, assuming a Matching Window of 10 ns.
493 while (simToT <= triy){
494 trix = gRandom->Rndm(i);
495 triy = gRandom->Rndm(i);
496 trix = (maxToT-minToT)*trix + minToT;
497 triy = maxToTDistr*triy;
498 Int_t binx=hToT->FindBin(trix);
499 simToT=hToT->GetBinContent(binx);
501 // the generated ToT (ns)
502 tToT= (Double_t) trix; // to apply slewing we start from ns..
503 // transform TOF signal in ns
504 AliDebug(2,Form(" The Initial Time (counts): %i: ",dig->GetTdc()));
505 AliDebug(2,Form(" Time before miscalibration (ps) %e: ",dig->GetTdc()*(Double_t)AliTOFGeometry::TdcBinWidth()));
506 // add slewing effect
507 timeCorr=par[0] + tToT*(par[1] +tToT*(par[2] +tToT*(par[3] +tToT*(par[4] +tToT*par[5]))));
508 AliDebug(2,Form(" The Time slewing + delay (ns): %f: ",timeCorr));
509 // add global time shift
512 Double_t timeMis = (Double_t)(dig->GetTdc())*(Double_t)AliTOFGeometry::TdcBinWidth();
513 timeMis = timeMis+timeCorr;
514 AliDebug(2,Form(" The Miscalibrated time (ps): %e: ",timeMis));
516 // now update the digit info
518 Int_t tdcCorr= (Int_t)(timeMis/AliTOFGeometry::TdcBinWidth());
519 AliDebug(2,Form(" Final Time (counts): %i: ",tdcCorr));
520 // Setting Decalibrated Time signal (TDC counts)
521 dig->SetTdc(tdcCorr);
522 // Setting realistic ToT signal (TDC counts)
523 tToT*=1E3; //back to ps
524 Int_t tot=(Int_t)(tToT/AliTOFGeometry::ToTBinWidth());//(factor 1E3 as input ToT is in ns)
526 AliDebug(2,Form(" Final Time and ToT (counts): %d: , %d:",dig->GetTdc(),dig->GetToT()));
528 AliWarning (Form(" The bad Slewed Time(TDC counts)= %d ", tdcCorr));
529 AliWarning(Form(" The bad ToT (TDC counts)= %d ", tot));
533 // For Data with no Miscalibration, set ToT signal == Adc
534 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)
539 AliDebug(1,"Standard Production, no miscalibrated digits");
542 AliDebug(1,"Standard Production, no miscalibrated digits");
544 AliDebug(1,"Simulating miscalibrated digits");