Add class to access simulation parameters, AliEMCALSimParam, to be set in configurati...
[u/mrichter/AliRoot.git] / EMCAL / AliEMCALDigitizer.cxx
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61e0abb5 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
17
18//_________________________________________________________________________
ffa6d63b 19//
61e0abb5 20//////////////////////////////////////////////////////////////////////////////
ab6a174f 21// Class performs digitization of Summable digits from simulated data
ffa6d63b 22//
61e0abb5 23// In addition it performs mixing of summable digits from different events.
24//
25// For each event two branches are created in TreeD:
26// "EMCAL" - list of digits
27// "AliEMCALDigitizer" - AliEMCALDigitizer with all parameters used in digitization
28//
29// Note, that one cset title for new digits branch, and repeat digitization with
30// another set of parameters.
31//
32// Examples of use:
33// root[0] AliEMCALDigitizer * d = new AliEMCALDigitizer() ;
34// root[1] d->ExecuteTask()
35// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
36// //Digitizes SDigitis in all events found in file galice.root
37//
38// root[2] AliEMCALDigitizer * d1 = new AliEMCALDigitizer("galice1.root") ;
39// // Will read sdigits from galice1.root
40// root[3] d1->MixWith("galice2.root")
41// Warning in <TDatabasePDG::TDatabasePDG>: object already instantiated
42// // Reads another portion of sdigits from galice2.root
43// root[3] d1->MixWith("galice3.root")
44// // Reads another portion of sdigits from galice3.root
45// root[4] d->ExecuteTask("deb timing")
46// // Reads SDigits from files galice1.root, galice2.root ....
47// // mixes them and stores produced Digits in file galice1.root
48// // deb - prints number of produced digits
49// // deb all - prints list of produced digits
50// // timing - prints time used for digitization
ffa6d63b 51////////////////////////////////////////////////////////////////////////////////////
61e0abb5 52//
ffa6d63b 53//*-- Author: Sahal Yacoob (LBL)
814ad4bf 54// based on : AliEMCALDigitizer
05a92d59 55// Modif:
56// August 2002 Yves Schutz: clone PHOS as closely as possible and intoduction
57// of new IO (à la PHOS)
1963b290 58// November 2003 Aleksei Pavlinov : adopted for Shish-Kebab geometry
59//_________________________________________________________________________________
61e0abb5 60
61// --- ROOT system ---
e939a978 62#include <TROOT.h>
63#include <TTree.h>
64#include <TSystem.h>
65#include <TBenchmark.h>
e939a978 66#include <TBrowser.h>
67#include <TObjectTable.h>
68#include <TRandom.h>
21e7df44 69#include <cassert>
61e0abb5 70
71// --- AliRoot header files ---
b42d4197 72#include "AliLog.h"
e4dcc484 73#include "AliRun.h"
ea5f3389 74#include "AliRunDigitizer.h"
5dee926e 75#include "AliRunLoader.h"
53f1c378 76#include "AliCDBManager.h"
77#include "AliCDBEntry.h"
61e0abb5 78#include "AliEMCALDigit.h"
05a92d59 79#include "AliEMCAL.h"
5dee926e 80#include "AliEMCALLoader.h"
61e0abb5 81#include "AliEMCALDigitizer.h"
82#include "AliEMCALSDigitizer.h"
83#include "AliEMCALGeometry.h"
05a92d59 84#include "AliEMCALTick.h"
a435f763 85#include "AliEMCALCalibData.h"
33a52e55 86#include "AliEMCALSimParam.h"
05a92d59 87
61e0abb5 88ClassImp(AliEMCALDigitizer)
89
90
91//____________________________________________________________________________
18a21c7c 92AliEMCALDigitizer::AliEMCALDigitizer()
93 : AliDigitizer("",""),
94 fDefaultInit(kTRUE),
95 fDigitsInRun(0),
96 fInit(0),
97 fInput(0),
98 fInputFileNames(0x0),
99 fEventNames(0x0),
100 fDigitThreshold(0),
101 fMeanPhotonElectron(0),
33a52e55 102// fPedestal(0), //Not used, remove?
103// fSlope(0), //Not used, remove?
18a21c7c 104 fPinNoise(0),
105 fTimeResolution(0),
33a52e55 106// fTimeThreshold(0), //Not used, remove?
107// fTimeSignalLength(0), //Not used, remove?
18a21c7c 108 fADCchannelEC(0),
109 fADCpedestalEC(0),
110 fNADCEC(0),
111 fEventFolderName(""),
112 fFirstEvent(0),
113 fLastEvent(0),
7ea6391b 114 fCalibData(0x0)
61e0abb5 115{
116 // ctor
88cb7938 117 InitParameters() ;
ab6a174f 118 fManager = 0 ; // We work in the standalone mode
839828a6 119}
61e0abb5 120
839828a6 121//____________________________________________________________________________
18a21c7c 122AliEMCALDigitizer::AliEMCALDigitizer(TString alirunFileName, TString eventFolderName)
123 : AliDigitizer("EMCAL"+AliConfig::Instance()->GetDigitizerTaskName(), alirunFileName),
124 fDefaultInit(kFALSE),
125 fDigitsInRun(0),
126 fInit(0),
127 fInput(0),
128 fInputFileNames(0),
129 fEventNames(0),
130 fDigitThreshold(0),
131 fMeanPhotonElectron(0),
33a52e55 132// fPedestal(0),//Not used, remove?
133// fSlope(0), //Not used, remove?
18a21c7c 134 fPinNoise(0),
135 fTimeResolution(0),
33a52e55 136// fTimeThreshold(0), //Not used, remove?
137// fTimeSignalLength(0), //Not used, remove?
18a21c7c 138 fADCchannelEC(0),
139 fADCpedestalEC(0),
140 fNADCEC(0),
141 fEventFolderName(eventFolderName),
142 fFirstEvent(0),
143 fLastEvent(0),
7ea6391b 144 fCalibData(0x0)
839828a6 145{
05a92d59 146 // ctor
a9485c37 147 InitParameters() ;
88cb7938 148 Init() ;
ab6a174f 149 fManager = 0 ; // We work in the standalone mode
61e0abb5 150}
839828a6 151
61e0abb5 152//____________________________________________________________________________
18a21c7c 153AliEMCALDigitizer::AliEMCALDigitizer(const AliEMCALDigitizer & d)
154 : AliDigitizer(d.GetName(),d.GetTitle()),
155 fDefaultInit(d.fDefaultInit),
156 fDigitsInRun(d.fDigitsInRun),
157 fInit(d.fInit),
158 fInput(d.fInput),
159 fInputFileNames(d.fInputFileNames),
160 fEventNames(d.fEventNames),
161 fDigitThreshold(d.fDigitThreshold),
162 fMeanPhotonElectron(d.fMeanPhotonElectron),
33a52e55 163// fPedestal(d.fPedestal), //Not used, remove?
164// fSlope(d.fSlope), //Not used, remove?
18a21c7c 165 fPinNoise(d.fPinNoise),
166 fTimeResolution(d.fTimeResolution),
33a52e55 167// fTimeThreshold(d.fTimeThreshold), //Not used, remove?
168// fTimeSignalLength(d.fTimeSignalLength), //Not used, remove?
18a21c7c 169 fADCchannelEC(d.fADCchannelEC),
170 fADCpedestalEC(d.fADCpedestalEC),
171 fNADCEC(d.fNADCEC),
172 fEventFolderName(d.fEventFolderName),
173 fFirstEvent(d.fFirstEvent),
174 fLastEvent(d.fLastEvent),
7ea6391b 175 fCalibData(d.fCalibData)
88cb7938 176{
177 // copyy ctor
88cb7938 178 }
179
180//____________________________________________________________________________
18a21c7c 181AliEMCALDigitizer::AliEMCALDigitizer(AliRunDigitizer * rd)
182 : AliDigitizer(rd,"EMCAL"+AliConfig::Instance()->GetDigitizerTaskName()),
183 fDefaultInit(kFALSE),
184 fDigitsInRun(0),
185 fInit(0),
186 fInput(0),
187 fInputFileNames(0),
188 fEventNames(0),
189 fDigitThreshold(0.),
190 fMeanPhotonElectron(0),
33a52e55 191// fPedestal(0), //Not used, remove?
192// fSlope(0.), //Not used, remove?
18a21c7c 193 fPinNoise(0),
194 fTimeResolution(0.),
33a52e55 195// fTimeThreshold(0), //Not used, remove?
196// fTimeSignalLength(0), //Not used, remove?
18a21c7c 197 fADCchannelEC(0),
198 fADCpedestalEC(0),
199 fNADCEC(0),
200 fEventFolderName(0),
201 fFirstEvent(0),
202 fLastEvent(0),
7ea6391b 203 fCalibData(0x0)
61e0abb5 204{
45fa49ca 205 // ctor Init() is called by RunDigitizer
88cb7938 206 fManager = rd ;
e0e18b6d 207 fEventFolderName = fManager->GetInputFolderName(0) ;
88cb7938 208 SetTitle(dynamic_cast<AliStream*>(fManager->GetInputStream(0))->GetFileName(0));
05a92d59 209 InitParameters() ;
839828a6 210}
814ad4bf 211
839828a6 212//____________________________________________________________________________
213 AliEMCALDigitizer::~AliEMCALDigitizer()
214{
14ce0a6e 215 //dtor
33c3c91a 216 if (AliRunLoader::Instance()) {
5dee926e 217 AliLoader *emcalLoader=0;
33c3c91a 218 if ((emcalLoader = AliRunLoader::Instance()->GetDetectorLoader("EMCAL")))
5dee926e 219 emcalLoader->CleanDigitizer();
220 }
221 else
222 AliDebug(1," no runloader present");
f5f384f4 223 delete [] fInputFileNames ;
224 delete [] fEventNames ;
64942713 225
61e0abb5 226}
227
228//____________________________________________________________________________
09884213 229void AliEMCALDigitizer::Digitize(Int_t event)
05a92d59 230{
61e0abb5 231
232 // Makes the digitization of the collected summable digits
233 // for this it first creates the array of all EMCAL modules
ab6a174f 234 // filled with noise and after that adds contributions from
235 // SDigits. This design helps to avoid scanning over the
236 // list of digits to add contribution of any new SDigit.
237 //
238 // JLK 26-Jun-2008
239 // Note that SDigit energy info is stored as an amplitude, so we
240 // must call the Calibrate() method of the SDigitizer to convert it
241 // back to an energy in GeV before adding it to the Digit
242 //
1963b290 243 static int nEMC=0; //max number of digits possible
61e0abb5 244
33c3c91a 245 AliRunLoader *rl = AliRunLoader::Instance();
5dee926e 246 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));
14ce0a6e 247 Int_t readEvent = event ;
1963b290 248 // fManager is data member from AliDigitizer
45fa49ca 249 if (fManager)
14ce0a6e 250 readEvent = dynamic_cast<AliStream*>(fManager->GetInputStream(0))->GetCurrentEventNumber() ;
cf24bdc4 251 AliDebug(1,Form("Adding event %d from input stream 0 %s %s",
14ce0a6e 252 readEvent, GetTitle(), fEventFolderName.Data())) ;
253 rl->GetEvent(readEvent);
5dee926e 254
255 TClonesArray * digits = emcalLoader->Digits() ;
ab6a174f 256 digits->Delete() ; //correct way to clear array when memory is
257 //allocated by objects stored in array
61e0abb5 258
e4dcc484 259 // Load Geometry
30bc5594 260 AliEMCALGeometry *geom = 0;
261 if (rl->GetAliRun()) {
262 AliEMCAL * emcal = (AliEMCAL*)rl->GetAliRun()->GetDetector("EMCAL");
263 geom = emcal->GetGeometry();
264 }
265 else
266 AliFatal("Could not get AliRun from runLoader");
e4dcc484 267
fe93d365 268 nEMC = geom->GetNCells();
269 AliDebug(1,Form("nEMC %i (number cells in EMCAL) | %s \n", nEMC, geom->GetName()));
270
88cb7938 271 Int_t absID ;
61e0abb5 272
88cb7938 273 digits->Expand(nEMC) ;
05a92d59 274
88cb7938 275 // get first the sdigitizer from the tasks list (must have same name as the digitizer)
5dee926e 276 if ( !emcalLoader->SDigitizer() )
277 emcalLoader->LoadSDigitizer();
278 AliEMCALSDigitizer * sDigitizer = dynamic_cast<AliEMCALSDigitizer*>(emcalLoader->SDigitizer());
88cb7938 279
280 if ( !sDigitizer )
281 Fatal("Digitize", "SDigitizer with name %s %s not found", fEventFolderName.Data(), GetTitle() ) ;
282
283 //take all the inputs to add together and load the SDigits
284 TObjArray * sdigArray = new TObjArray(fInput) ;
5dee926e 285 sdigArray->AddAt(emcalLoader->SDigits(), 0) ;
88cb7938 286 Int_t i ;
5dee926e 287
88cb7938 288 for(i = 1 ; i < fInput ; i++){
289 TString tempo(fEventNames[i]) ;
290 tempo += i ;
3880b0fb 291
292 AliRunLoader * rl2 = AliRunLoader::GetRunLoader(tempo) ;
293
294 if (rl2==0)
295 rl2 = AliRunLoader::Open(fInputFileNames[i], tempo) ;
296
45fa49ca 297 if (fManager)
14ce0a6e 298 readEvent = dynamic_cast<AliStream*>(fManager->GetInputStream(i))->GetCurrentEventNumber() ;
299 Info("Digitize", "Adding event %d from input stream %d %s %s", readEvent, i, fInputFileNames[i].Data(), tempo.Data()) ;
3880b0fb 300 rl2->LoadSDigits();
14ce0a6e 301 rl2->GetEvent(readEvent);
3880b0fb 302 AliEMCALLoader *emcalLoader2 = dynamic_cast<AliEMCALLoader*>(rl2->GetDetectorLoader("EMCAL"));
303 sdigArray->AddAt(emcalLoader2->SDigits(), i) ;
0c219753 304 }
5dee926e 305
d968cee0 306 //Find the first tower with signal
a9485c37 307 Int_t nextSig = nEMC + 1 ;
88cb7938 308 TClonesArray * sdigits ;
309 for(i = 0 ; i < fInput ; i++){
310 sdigits = dynamic_cast<TClonesArray *>(sdigArray->At(i)) ;
814ad4bf 311 if ( !sdigits->GetEntriesFast() )
312 continue ;
88cb7938 313 Int_t curNext = dynamic_cast<AliEMCALDigit *>(sdigits->At(0))->GetId() ;
814ad4bf 314 if(curNext < nextSig)
315 nextSig = curNext ;
cf24bdc4 316 AliDebug(1,Form("input %i : #sdigits %i \n",
317 i, sdigits->GetEntriesFast()));
814ad4bf 318 }
cf24bdc4 319 AliDebug(1,Form("FIRST tower with signal %i \n", nextSig));
61e0abb5 320
88cb7938 321 TArrayI index(fInput) ;
814ad4bf 322 index.Reset() ; //Set all indexes to zero
61e0abb5 323
05a92d59 324 AliEMCALDigit * digit ;
325 AliEMCALDigit * curSDigit ;
ffa6d63b 326
9517d886 327 // TClonesArray * ticks = new TClonesArray("AliEMCALTick",1000) ;
ffa6d63b 328
5dee926e 329 //Put Noise contribution
d25f2c54 330 for(absID = 0; absID < nEMC; absID++){ // Nov 30, 2006 by PAI; was from 1 to nEMC
ab6a174f 331 Float_t energy = 0 ;
a9485c37 332 // amplitude set to zero, noise will be added later
d25f2c54 333 new((*digits)[absID]) AliEMCALDigit( -1, -1, absID, 0, TimeOfNoise() ); // absID-1->absID
814ad4bf 334 //look if we have to add signal?
d25f2c54 335 digit = dynamic_cast<AliEMCALDigit *>(digits->At(absID)); // absID-1->absID
88cb7938 336
814ad4bf 337 if(absID==nextSig){
54cbf5a6 338 //Add SDigits from all inputs
9517d886 339 // ticks->Clear() ;
340 //Int_t contrib = 0 ;
341
342 //Follow PHOS and comment out this timing model til a better one
343 //can be developed - JLK 28-Apr-2008
344
345 //Float_t a = digit->GetAmp() ;
346 //Float_t b = TMath::Abs( a /fTimeSignalLength) ;
88cb7938 347 //Mark the beginning of the signal
9517d886 348 //new((*ticks)[contrib++]) AliEMCALTick(digit->GetTime(),0, b);
fdebddeb 349 //Mark the end of the signal
9517d886 350 //new((*ticks)[contrib++]) AliEMCALTick(digit->GetTime()+fTimeSignalLength, -a, -b);
351
352 // Calculate time as time of the largest digit
353 Float_t time = digit->GetTime() ;
ab6a174f 354 Float_t aTime= digit->GetAmp() ;
814ad4bf 355
88cb7938 356 // loop over input
357 for(i = 0; i< fInput ; i++){ //loop over (possible) merge sources
358 if(dynamic_cast<TClonesArray *>(sdigArray->At(i))->GetEntriesFast() > index[i] )
359 curSDigit = dynamic_cast<AliEMCALDigit*>(dynamic_cast<TClonesArray *>(sdigArray->At(i))->At(index[i])) ;
814ad4bf 360 else
361 curSDigit = 0 ;
362 //May be several digits will contribute from the same input
fdebddeb 363 while(curSDigit && (curSDigit->GetId() == absID)){
814ad4bf 364 //Shift primary to separate primaries belonging different inputs
365 Int_t primaryoffset ;
366 if(fManager)
367 primaryoffset = fManager->GetMask(i) ;
368 else
369 primaryoffset = i ;
370 curSDigit->ShiftPrimary(primaryoffset) ;
9517d886 371
372 //Remove old timing model - JLK 28-April-2008
373 //a = curSDigit->GetAmp() ;
374 //b = a /fTimeSignalLength ;
375 //new((*ticks)[contrib++]) AliEMCALTick(curSDigit->GetTime(),0, b);
376 //new((*ticks)[contrib++]) AliEMCALTick(curSDigit->GetTime()+fTimeSignalLength, -a, -b);
ab6a174f 377 if(curSDigit->GetAmp()>aTime) {
378 aTime = curSDigit->GetAmp();
9517d886 379 time = curSDigit->GetTime();
380 }
814ad4bf 381
ab6a174f 382 *digit = *digit + *curSDigit ; //adds amplitudes of each digit
814ad4bf 383
384 index[i]++ ;
88cb7938 385 if( dynamic_cast<TClonesArray *>(sdigArray->At(i))->GetEntriesFast() > index[i] )
1963b290 386 curSDigit = dynamic_cast<AliEMCALDigit*>(dynamic_cast<TClonesArray *>(sdigArray->At(i))->At(index[i])) ;
814ad4bf 387 else
388 curSDigit = 0 ;
389 }
390 }
ab6a174f 391 //Here we convert the summed amplitude to an energy in GeV
392 energy = sDigitizer->Calibrate(digit->GetAmp()) ; // GeV
a9485c37 393 // add fluctuations for photo-electron creation
ab6a174f 394 energy *= static_cast<Float_t>(gRandom->Poisson(fMeanPhotonElectron)) / static_cast<Float_t>(fMeanPhotonElectron) ;
88cb7938 395
05a92d59 396 //calculate and set time
9517d886 397 //New timing model needed - JLK 28-April-2008
398 //Float_t time = FrontEdgeTime(ticks) ;
814ad4bf 399 digit->SetTime(time) ;
400
401 //Find next signal module
a9485c37 402 nextSig = nEMC + 1 ;
88cb7938 403 for(i = 0 ; i < fInput ; i++){
404 sdigits = dynamic_cast<TClonesArray *>(sdigArray->At(i)) ;
814ad4bf 405 Int_t curNext = nextSig ;
406 if(sdigits->GetEntriesFast() > index[i] ){
88cb7938 407 curNext = dynamic_cast<AliEMCALDigit *>(sdigits->At(index[i]))->GetId() ;
814ad4bf 408 }
409 if(curNext < nextSig) nextSig = curNext ;
410 }
411 }
a9485c37 412 // add the noise now
ab6a174f 413 energy += TMath::Abs(gRandom->Gaus(0., fPinNoise)) ;
414 // JLK 26-June-2008
415 //Now digitize the energy according to the sDigitizer method,
416 //which merely converts the energy to an integer. Later we will
417 //check that the stored value matches our allowed dynamic ranges
418 digit->SetAmp(sDigitizer->Digitize(energy)) ;
419 AliDebug(10,Form(" absID %5i energy %f nextSig %5i\n",
420 absID, energy, nextSig));
421 } // for(absID = 0; absID < nEMC; absID++)
814ad4bf 422
9517d886 423 //ticks->Delete() ;
424 //delete ticks ;
61e0abb5 425
ab6a174f 426 //JLK is it better to call Clear() here?
05a92d59 427 delete sdigArray ; //We should not delete its contents
61e0abb5 428
814ad4bf 429 //remove digits below thresholds
88cb7938 430 for(i = 0 ; i < nEMC ; i++){
431 digit = dynamic_cast<AliEMCALDigit*>( digits->At(i) ) ;
ab6a174f 432 Float_t threshold = fDigitThreshold ; //this is in GeV
433 //need to calibrate digit amplitude to energy in GeV for comparison
88cb7938 434 if(sDigitizer->Calibrate( digit->GetAmp() ) < threshold)
435 digits->RemoveAt(i) ;
436 else
814ad4bf 437 digit->SetTime(gRandom->Gaus(digit->GetTime(),fTimeResolution) ) ;
a9485c37 438 }
61e0abb5 439
814ad4bf 440 digits->Compress() ;
61e0abb5 441
05a92d59 442 Int_t ndigits = digits->GetEntriesFast() ;
7ea6391b 443
ab6a174f 444 //JLK 26-June-2008
445 //After we have done the summing and digitizing to create the
446 //digits, now we want to calibrate the resulting amplitude to match
447 //the dynamic range of our real data.
448 Float_t energy=0;
05a92d59 449 for (i = 0 ; i < ndigits ; i++) {
450 digit = dynamic_cast<AliEMCALDigit *>( digits->At(i) ) ;
814ad4bf 451 digit->SetIndexInList(i) ;
1963b290 452 energy = sDigitizer->Calibrate(digit->GetAmp()) ;
ab6a174f 453 digit->SetAmp(DigitizeEnergy(energy, digit->GetId()) ) ;
61e0abb5 454 }
ab6a174f 455
814ad4bf 456}
61e0abb5 457
d62a891a 458// //_____________________________________________________________________
e4dcc484 459Int_t AliEMCALDigitizer::DigitizeEnergy(Float_t energy, Int_t AbsId)
814ad4bf 460{
ab6a174f 461 // JLK 26-June-2008
e4dcc484 462 // Returns digitized value of the energy in a cell absId
ab6a174f 463 // using the calibration constants stored in the OCDB
464 // or default values if no CalibData object is found.
465 // This effectively converts everything to match the dynamic range
466 // of the real data we will collect
467 //
53f1c378 468 // Load Geometry
469 const AliEMCALGeometry * geom = AliEMCALGeometry::GetInstance();
e4dcc484 470
471 if (geom==0)
d25f2c54 472 AliFatal("Did not get geometry from EMCALLoader");
e4dcc484 473
474 Int_t iSupMod = -1;
2bb3725c 475 Int_t nModule = -1;
e4dcc484 476 Int_t nIphi = -1;
477 Int_t nIeta = -1;
478 Int_t iphi = -1;
479 Int_t ieta = -1;
fdebddeb 480 Int_t channel = -999;
e4dcc484 481
2bb3725c 482 Bool_t bCell = geom->GetCellIndex(AbsId, iSupMod, nModule, nIphi, nIeta) ;
e4dcc484 483 if(!bCell)
d25f2c54 484 Error("DigitizeEnergy","Wrong cell id number : AbsId %i ", AbsId) ;
2bb3725c 485 geom->GetCellPhiEtaIndexInSModule(iSupMod,nModule,nIphi, nIeta,iphi,ieta);
d62a891a 486
53f1c378 487 if(fCalibData) {
488 fADCpedestalEC = fCalibData->GetADCpedestal(iSupMod,ieta,iphi);
489 fADCchannelEC = fCalibData->GetADCchannel(iSupMod,ieta,iphi);
e4dcc484 490 }
5eb74a51 491
492 channel = static_cast<Int_t> (TMath::Ceil( (energy + fADCpedestalEC)/fADCchannelEC )) ;
493
fdebddeb 494 if(channel > fNADCEC )
7d74eaca 495 channel = fNADCEC ;
814ad4bf 496 return channel ;
d62a891a 497
61e0abb5 498}
499
500//____________________________________________________________________________
05a92d59 501void AliEMCALDigitizer::Exec(Option_t *option)
502{
45fa49ca 503 // Steering method to process digitization for events
504 // in the range from fFirstEvent to fLastEvent.
505 // This range is optionally set by SetEventRange().
506 // if fLastEvent=-1, then process events until the end.
507 // by default fLastEvent = fFirstEvent (process only one event)
05a92d59 508
88cb7938 509 if (!fInit) { // to prevent overwrite existing file
510 Error( "Exec", "Give a version name different from %s", fEventFolderName.Data() ) ;
511 return ;
512 }
513
814ad4bf 514 if (strstr(option,"print")) {
b42d4197 515
88cb7938 516 Print();
814ad4bf 517 return ;
518 }
519
61e0abb5 520 if(strstr(option,"tim"))
521 gBenchmark->Start("EMCALDigitizer");
5dee926e 522
33c3c91a 523 AliRunLoader *rl = AliRunLoader::Instance();
5dee926e 524 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));
525
5b4d2c50 526 // Post Digitizer to the white board
5dee926e 527 emcalLoader->PostDigitizer(this) ;
5b4d2c50 528
30bc5594 529 if (fLastEvent == -1) {
5dee926e 530 fLastEvent = rl->GetNumberOfEvents() - 1 ;
30bc5594 531 }
396a348e 532 else if (fManager)
1963b290 533 fLastEvent = fFirstEvent ; // what is this ??
396a348e 534
45fa49ca 535 Int_t nEvents = fLastEvent - fFirstEvent + 1;
cf24bdc4 536 Int_t ievent;
537
5dee926e 538 rl->LoadSDigits("EMCAL");
cf24bdc4 539 for (ievent = fFirstEvent; ievent <= fLastEvent; ievent++) {
64942713 540
5dee926e 541 rl->GetEvent(ievent);
05a92d59 542
814ad4bf 543 Digitize(ievent) ; //Add prepared SDigits to digits and add the noise
88cb7938 544
9e5d2067 545 WriteDigits() ;
88cb7938 546
61e0abb5 547 if(strstr(option,"deb"))
548 PrintDigits(option);
1963b290 549 if(strstr(option,"table")) gObjectTable->Print();
88cb7938 550
814ad4bf 551 //increment the total number of Digits per run
5dee926e 552 fDigitsInRun += emcalLoader->Digits()->GetEntriesFast() ;
61e0abb5 553 }
64942713 554
5dee926e 555 emcalLoader->CleanDigitizer() ;
5b4d2c50 556
61e0abb5 557 if(strstr(option,"tim")){
558 gBenchmark->Stop("EMCALDigitizer");
b42d4197 559 AliInfo(Form("Exec: took %f seconds for Digitizing %f seconds per event",
560 gBenchmark->GetCpuTime("EMCALDigitizer"), gBenchmark->GetCpuTime("EMCALDigitizer")/nEvents )) ;
88cb7938 561 }
61e0abb5 562}
563
05a92d59 564//____________________________________________________________________________
33a52e55 565//Float_t AliEMCALDigitizer::FrontEdgeTime(TClonesArray * ticks)
566//{
567// // Returns the shortest time among all time ticks
568//
569// ticks->Sort() ; //Sort in accordance with times of ticks
570// TIter it(ticks) ;
571// AliEMCALTick * ctick = (AliEMCALTick *) it.Next() ;
572// Float_t time = ctick->CrossingTime(fTimeThreshold) ;
573//
574// AliEMCALTick * t ;
575// while((t=(AliEMCALTick*) it.Next())){
576// if(t->GetTime() < time) //This tick starts before crossing
577// *ctick+=*t ;
578// else
579// return time ;
580//
581// time = ctick->CrossingTime(fTimeThreshold) ;
582// }
583// return time ;
584//}
585//
05a92d59 586
587//____________________________________________________________________________
588Bool_t AliEMCALDigitizer::Init()
589{
590 // Makes all memory allocations
88cb7938 591 fInit = kTRUE ;
33c3c91a 592 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(AliRunLoader::Instance()->GetDetectorLoader("EMCAL"));
5dee926e 593
594 if ( emcalLoader == 0 ) {
595 Fatal("Init", "Could not obtain the AliEMCALLoader");
05a92d59 596 return kFALSE;
597 }
05a92d59 598
45fa49ca 599 fFirstEvent = 0 ;
600 fLastEvent = fFirstEvent ;
601
88cb7938 602 if(fManager)
603 fInput = fManager->GetNinputs() ;
604 else
605 fInput = 1 ;
606
607 fInputFileNames = new TString[fInput] ;
608 fEventNames = new TString[fInput] ;
609 fInputFileNames[0] = GetTitle() ;
610 fEventNames[0] = fEventFolderName.Data() ;
611 Int_t index ;
612 for (index = 1 ; index < fInput ; index++) {
613 fInputFileNames[index] = dynamic_cast<AliStream*>(fManager->GetInputStream(index))->GetFileName(0);
614 TString tempo = fManager->GetInputFolderName(index) ;
615 fEventNames[index] = tempo.Remove(tempo.Length()-1) ; // strip of the stream number added bt fManager
05a92d59 616 }
617
88cb7938 618 //to prevent cleaning of this object while GetEvent is called
5dee926e 619 emcalLoader->GetDigitsDataLoader()->GetBaseTaskLoader()->SetDoNotReload(kTRUE);
e52475ed 620
53f1c378 621 //Calibration instance
622 fCalibData = emcalLoader->CalibData();
88cb7938 623 return fInit ;
05a92d59 624}
625
626//____________________________________________________________________________
627void AliEMCALDigitizer::InitParameters()
14ce0a6e 628{
29b5d492 629 // Parameter initialization for digitizer
33a52e55 630
631 fMeanPhotonElectron = AliEMCALSimParam::GetInstance()->GetMeanPhotonElectron();//4400; // electrons per GeV
632 fPinNoise = AliEMCALSimParam::GetInstance()->GetPinNoise();//0.012; // pin noise in GeV from analysis test beam data
633 if (fPinNoise < 0.0001 )
88cb7938 634 Warning("InitParameters", "No noise added\n") ;
33a52e55 635 fDigitThreshold = AliEMCALSimParam::GetInstance()->GetDigitThreshold(); //fPinNoise * 3; // 3 * sigma
636 fTimeResolution = AliEMCALSimParam::GetInstance()->GetTimeResolution(); //0.6e-9 ; // 600 psc
05a92d59 637
97075cd8 638 // These defaults are normally not used.
639 // Values are read from calibration database instead
33a52e55 640 fADCchannelEC = 0.0153; // Update 24 Apr 2007: 250./16/1024 - width of one ADC channel in GeV
641 fADCpedestalEC = 0.0 ; // GeV
642
643 fNADCEC = AliEMCALSimParam::GetInstance()->GetNADCEC();//(Int_t) TMath::Power(2,16) ; // number of channels in Tower ADC - 65536
644
645 AliDebug(2,Form("Mean Photon Electron %d, Noise %f, E Threshold %f,Time Resolution %g,NADCEC %d",
646 fMeanPhotonElectron,fPinNoise,fDigitThreshold,fTimeResolution,fNADCEC));
a9485c37 647
33a52e55 648 // Not used anymore, remove?
649 // fTimeSignalLength = 1.0e-9 ;
650 // fTimeThreshold = 0.001*10000000 ; // Means 1 MeV in terms of SDigits amplitude ??
ab6a174f 651
05a92d59 652}
61e0abb5 653
61e0abb5 654//__________________________________________________________________
09884213 655void AliEMCALDigitizer::MixWith(TString alirunFileName, TString eventFolderName)
05a92d59 656{
657 // Allows to produce digits by superimposing background and signal event.
61e0abb5 658 // It is assumed, that headers file with SIGNAL events is opened in
05a92d59 659 // the constructor.
660 // Sets the BACKGROUND event, with which the SIGNAL event is to be mixed
661 // Thus we avoid writing (changing) huge and expensive
61e0abb5 662 // backgound files: all output will be writen into SIGNAL, i.e.
663 // opened in constructor file.
664 //
05a92d59 665 // One can open as many files to mix with as one needs.
666 // However only Sdigits with the same name (i.e. constructed with the same SDigitizer)
667 // can be mixed.
61e0abb5 668
05a92d59 669 if( strcmp(GetName(), "") == 0 )
61e0abb5 670 Init() ;
814ad4bf 671
05a92d59 672 if(fManager){
9859bfc0 673 Error("MixWith", "Cannot use this method under AliRunDigitizer") ;
61e0abb5 674 return ;
05a92d59 675 }
88cb7938 676 // looking for file which contains AliRun
677 if (gSystem->AccessPathName(alirunFileName)) {// file does not exist
678 Error("MixWith", "File %s does not exist!", alirunFileName.Data()) ;
679 return ;
61e0abb5 680 }
88cb7938 681 // looking for the file which contains SDigits
33c3c91a 682 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(AliRunLoader::Instance()->GetDetectorLoader("EMCAL"));
5dee926e 683 TString fileName( emcalLoader->GetSDigitsFileName() ) ;
e191bb57 684 if ( eventFolderName != AliConfig::GetDefaultEventFolderName()) // only if not the default folder name
88cb7938 685 fileName = fileName.ReplaceAll(".root", "") + "_" + eventFolderName + ".root" ;
686 if ( (gSystem->AccessPathName(fileName)) ) {
687 Error("MixWith", "The file %s does not exist!", fileName.Data()) ;
688 return ;
814ad4bf 689 }
88cb7938 690 // need to increase the arrays
30bc5594 691 // MvL: This code only works when fInput == 1, I think.
88cb7938 692 TString tempo = fInputFileNames[fInput-1] ;
693 delete [] fInputFileNames ;
694 fInputFileNames = new TString[fInput+1] ;
695 fInputFileNames[fInput-1] = tempo ;
696
697 tempo = fEventNames[fInput-1] ;
698 delete [] fEventNames ;
699 fEventNames = new TString[fInput+1] ;
700 fEventNames[fInput-1] = tempo ;
701
702 fInputFileNames[fInput] = alirunFileName ;
703 fEventNames[fInput] = eventFolderName ;
704 fInput++ ;
705}
1963b290 706
fe93d365 707//__________________________________________________________________
1963b290 708void AliEMCALDigitizer::Print1(Option_t * option)
709{ // 19-nov-04 - just for convinience
710 Print();
711 PrintDigits(option);
712}
713
61e0abb5 714//__________________________________________________________________
eb0b1051 715void AliEMCALDigitizer::Print(Option_t*)const
88cb7938 716{
717 // Print Digitizer's parameters
fdebddeb 718 printf("Print: \n------------------- %s -------------", GetName() ) ;
88cb7938 719 if( strcmp(fEventFolderName.Data(), "") != 0 ){
720 printf(" Writing Digits to branch with title %s\n", fEventFolderName.Data()) ;
721
722 Int_t nStreams ;
723 if (fManager)
724 nStreams = GetNInputStreams() ;
725 else
726 nStreams = fInput ;
727
728 Int_t index = 0 ;
5dee926e 729
730 AliRunLoader *rl=0;
731
88cb7938 732 for (index = 0 ; index < nStreams ; index++) {
733 TString tempo(fEventNames[index]) ;
734 tempo += index ;
5dee926e 735 if ((rl = AliRunLoader::GetRunLoader(tempo)) == 0)
736 rl = AliRunLoader::Open(fInputFileNames[index], tempo) ;
737 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));
738 TString fileName( emcalLoader->GetSDigitsFileName() ) ;
e191bb57 739 if ( fEventNames[index] != AliConfig::GetDefaultEventFolderName()) // only if not the default folder name
88cb7938 740 fileName = fileName.ReplaceAll(".root", "") + "_" + fEventNames[index] + ".root" ;
741 printf ("Adding SDigits from %s %s\n", fInputFileNames[index].Data(), fileName.Data()) ;
742 }
5dee926e 743
33c3c91a 744 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(AliRunLoader::Instance()->GetDetectorLoader("EMCAL"));
5dee926e 745
746 printf("\nWriting digits to %s", emcalLoader->GetDigitsFileName().Data()) ;
88cb7938 747
748 printf("\nWith following parameters:\n") ;
749
750 printf(" Electronics noise in EMC (fPinNoise) = %f\n", fPinNoise) ;
751 printf(" Threshold in EMC (fDigitThreshold) = %f\n", fDigitThreshold) ;
752 printf("---------------------------------------------------\n") ;
ea5f3389 753 }
754 else
fdebddeb 755 printf("Print: AliEMCALDigitizer not initialized") ;
61e0abb5 756}
814ad4bf 757
61e0abb5 758//__________________________________________________________________
14ce0a6e 759void AliEMCALDigitizer::PrintDigits(Option_t * option)
760{
761 //utility method for printing digit information
762
33c3c91a 763 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(AliRunLoader::Instance()->GetDetectorLoader("EMCAL"));
5dee926e 764 TClonesArray * digits = emcalLoader->Digits() ;
765 TClonesArray * sdigits = emcalLoader->SDigits() ;
88cb7938 766
1963b290 767 printf("\n #Digits: %d : sdigits %d ", digits->GetEntriesFast(), sdigits->GetEntriesFast()) ;
5dee926e 768 printf("\n event %d", emcalLoader->GetRunLoader()->GetEventNumber());
88cb7938 769
770 if(strstr(option,"all")){
61e0abb5 771 //loop over digits
772 AliEMCALDigit * digit;
88cb7938 773 printf("\nEMC digits (with primaries):\n") ;
774 printf("\n Id Amplitude Time Index Nprim: Primaries list \n") ;
61e0abb5 775 Int_t index ;
88cb7938 776 for (index = 0 ; index < digits->GetEntries() ; index++) {
777 digit = dynamic_cast<AliEMCALDigit *>(digits->At(index)) ;
778 printf("\n%6d %8d %6.5e %4d %2d : ",
11f9c5ff 779 digit->GetId(), digit->GetAmp(), digit->GetTime(), digit->GetIndexInList(), digit->GetNprimary()) ;
61e0abb5 780 Int_t iprimary;
9859bfc0 781 for (iprimary=0; iprimary<digit->GetNprimary(); iprimary++) {
88cb7938 782 printf("%d ",digit->GetPrimary(iprimary+1) ) ;
9859bfc0 783 }
784 }
61e0abb5 785 }
1963b290 786 printf("\n");
61e0abb5 787}
05a92d59 788
789//__________________________________________________________________
790Float_t AliEMCALDigitizer::TimeOfNoise(void)
04f0bda3 791{
792 // Calculates the time signal generated by noise
26a2ef9d 793 //PH Info("TimeOfNoise", "Change me") ;
04f0bda3 794 return gRandom->Rndm() * 1.28E-5;
05a92d59 795}
796
88cb7938 797//__________________________________________________________________
798void AliEMCALDigitizer::Unload()
799{
fdebddeb 800 // Unloads the SDigits and Digits
5dee926e 801 AliRunLoader *rl=0;
802
88cb7938 803 Int_t i ;
804 for(i = 1 ; i < fInput ; i++){
805 TString tempo(fEventNames[i]) ;
5dee926e 806 tempo += i;
807 if ((rl = AliRunLoader::GetRunLoader(tempo)))
808 rl->GetDetectorLoader("EMCAL")->UnloadSDigits() ;
88cb7938 809 }
33c3c91a 810 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(AliRunLoader::Instance()->GetDetectorLoader("EMCAL"));
5dee926e 811 emcalLoader->UnloadDigits() ;
88cb7938 812}
813
814ad4bf 814//_________________________________________________________________________________________
9e5d2067 815void AliEMCALDigitizer::WriteDigits()
814ad4bf 816{
61e0abb5 817
814ad4bf 818 // Makes TreeD in the output file.
819 // Check if branch already exists:
820 // if yes, exit without writing: ROOT TTree does not support overwriting/updating of
821 // already existing branches.
822 // else creates branch with Digits, named "EMCAL", title "...",
823 // and branch "AliEMCALDigitizer", with the same title to keep all the parameters
824 // and names of files, from which digits are made.
61e0abb5 825
33c3c91a 826 AliEMCALLoader *emcalLoader = dynamic_cast<AliEMCALLoader*>(AliRunLoader::Instance()->GetDetectorLoader("EMCAL"));
cf24bdc4 827
5dee926e 828 const TClonesArray * digits = emcalLoader->Digits() ;
829 TTree * treeD = emcalLoader->TreeD();
830 if ( !treeD ) {
831 emcalLoader->MakeDigitsContainer();
832 treeD = emcalLoader->TreeD();
833 }
88cb7938 834
835 // -- create Digits branch
836 Int_t bufferSize = 32000 ;
5dee926e 837 TBranch * digitsBranch = 0;
30bc5594 838 if ((digitsBranch = treeD->GetBranch("EMCAL"))) {
5dee926e 839 digitsBranch->SetAddress(&digits);
30bc5594 840 AliWarning("Digits Branch already exists. Not all digits will be visible");
841 }
5dee926e 842 else
843 treeD->Branch("EMCAL","TClonesArray",&digits,bufferSize);
844 //digitsBranch->SetTitle(fEventFolderName);
845 treeD->Fill() ;
88cb7938 846
5dee926e 847 emcalLoader->WriteDigits("OVERWRITE");
848 emcalLoader->WriteDigitizer("OVERWRITE");
88cb7938 849
850 Unload() ;
851
814ad4bf 852}
61e0abb5 853
fe93d365 854//__________________________________________________________________
1963b290 855void AliEMCALDigitizer::Browse(TBrowser* b)
856{
1963b290 857 TTask::Browse(b);
858}