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9e04c3b6 | 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 | ||
090026bf | 16 | /* $Id$ */ |
17 | ||
b0d2c2d3 | 18 | ///_________________________________________________________________________ |
19 | /// | |
20 | /// This class constructs Digits out of Hits | |
21 | /// | |
22 | /// | |
9e04c3b6 | 23 | |
24 | // --- Standard library --- | |
9e04c3b6 | 25 | |
26 | // --- ROOT system --- | |
090026bf | 27 | #include <TMath.h> |
9e04c3b6 | 28 | #include <TTree.h> |
fe0adf2a | 29 | #include <TMap.h> |
8bd3e27a | 30 | #include <TGeoManager.h> |
31 | #include <TGeoPhysicalNode.h> | |
32 | #include <AliGeomManager.h> | |
e939a978 | 33 | #include <TRandom.h> |
9672d66e | 34 | #include <TF1.h> |
4e2652e8 | 35 | #include <TH1F.h> |
9e04c3b6 | 36 | |
37 | // --- AliRoot header files --- | |
9e04c3b6 | 38 | #include "AliRun.h" |
39 | #include "AliVZERO.h" | |
40 | #include "AliVZEROhit.h" | |
9e04c3b6 | 41 | #include "AliRunLoader.h" |
42 | #include "AliLoader.h" | |
fe0adf2a | 43 | #include "AliGRPObject.h" |
f21fc003 | 44 | #include "AliDigitizationInput.h" |
ce7090f5 | 45 | #include "AliCDBManager.h" |
46 | #include "AliCDBStorage.h" | |
47 | #include "AliCDBEntry.h" | |
48 | #include "AliVZEROCalibData.h" | |
4e2652e8 | 49 | #include "AliCTPTimeParams.h" |
30d5d647 | 50 | #include "AliLHCClockPhase.h" |
9e04c3b6 | 51 | #include "AliVZEROdigit.h" |
b0d2c2d3 | 52 | #include "AliVZERODigitizer.h" |
72da5ce8 | 53 | #include "AliVZEROSDigit.h" |
9e04c3b6 | 54 | |
55 | ClassImp(AliVZERODigitizer) | |
56 | ||
57 | AliVZERODigitizer::AliVZERODigitizer() | |
fe0adf2a | 58 | :AliDigitizer(), |
59 | fCalibData(GetCalibData()), | |
60 | fPhotoCathodeEfficiency(0.18), | |
fe0adf2a | 61 | fNdigits(0), |
62 | fDigits(0), | |
4e2652e8 | 63 | fSignalShape(NULL), |
64 | fPMResponse(NULL), | |
72da5ce8 | 65 | fSinglePhESpectrum(NULL), |
66 | fEvenOrOdd(kFALSE), | |
67 | fTask(kHits2Digits), | |
68 | fVZERO(NULL) | |
9e04c3b6 | 69 | { |
b0d2c2d3 | 70 | // default constructor |
72da5ce8 | 71 | // Initialize OCDB and containers used in the digitization |
b0d2c2d3 | 72 | |
72da5ce8 | 73 | Init(); |
74 | } | |
4e2652e8 | 75 | |
72da5ce8 | 76 | //____________________________________________________________________________ |
77 | AliVZERODigitizer::AliVZERODigitizer(AliVZERO *vzero, DigiTask_t task) | |
78 | :AliDigitizer(), | |
79 | fCalibData(GetCalibData()), | |
80 | fPhotoCathodeEfficiency(0.18), | |
81 | fNdigits(0), | |
82 | fDigits(0), | |
83 | fSignalShape(NULL), | |
84 | fPMResponse(NULL), | |
85 | fSinglePhESpectrum(NULL), | |
86 | fEvenOrOdd(kFALSE), | |
87 | fTask(task), | |
88 | fVZERO(vzero) | |
89 | { | |
90 | // constructor | |
91 | // Initialize OCDB and containers used in the digitization | |
4e2652e8 | 92 | |
72da5ce8 | 93 | Init(); |
9e04c3b6 | 94 | } |
72da5ce8 | 95 | |
9e04c3b6 | 96 | //____________________________________________________________________________ |
f21fc003 | 97 | AliVZERODigitizer::AliVZERODigitizer(AliDigitizationInput* digInput) |
98 | :AliDigitizer(digInput), | |
0b2bea8b | 99 | fCalibData(GetCalibData()), |
100 | fPhotoCathodeEfficiency(0.18), | |
0b2bea8b | 101 | fNdigits(0), |
fe0adf2a | 102 | fDigits(0), |
4e2652e8 | 103 | fSignalShape(NULL), |
104 | fPMResponse(NULL), | |
72da5ce8 | 105 | fSinglePhESpectrum(NULL), |
106 | fEvenOrOdd(kFALSE), | |
107 | fTask(kHits2Digits), | |
108 | fVZERO(NULL) | |
9e04c3b6 | 109 | { |
110 | // constructor | |
4e2652e8 | 111 | // Initialize OCDB and containers used in the digitization |
72da5ce8 | 112 | |
113 | Init(); | |
114 | } | |
115 | ||
116 | //____________________________________________________________________________ | |
117 | AliVZERODigitizer::~AliVZERODigitizer() | |
118 | { | |
119 | // destructor | |
9e04c3b6 | 120 | |
72da5ce8 | 121 | if (fDigits) { |
122 | fDigits->Delete(); | |
123 | delete fDigits; | |
124 | fDigits=0; | |
125 | } | |
126 | ||
127 | if (fSignalShape) { | |
128 | delete fSignalShape; | |
129 | fSignalShape = NULL; | |
130 | } | |
131 | if (fPMResponse) { | |
132 | delete fPMResponse; | |
133 | fPMResponse = NULL; | |
134 | } | |
135 | if (fSinglePhESpectrum) { | |
136 | delete fSinglePhESpectrum; | |
137 | fSinglePhESpectrum = NULL; | |
138 | } | |
139 | ||
140 | for(Int_t i = 0 ; i < 64; ++i) { | |
141 | if (fTime[i]) delete [] fTime[i]; | |
142 | } | |
143 | } | |
144 | ||
145 | //_____________________________________________________________________________ | |
146 | Bool_t AliVZERODigitizer::Init() | |
147 | { | |
148 | // Initialises the digitizer | |
149 | // Initialize OCDB and containers used in the digitization | |
150 | ||
151 | // check if the digitizer was already initialized | |
152 | if (fSignalShape) return kTRUE; | |
153 | ||
9672d66e | 154 | fSignalShape = new TF1("VZEROSignalShape",this,&AliVZERODigitizer::SignalShape,0,200,6,"AliVZERODigitizer","SignalShape"); |
4e2652e8 | 155 | // fSignalShape->SetParameters(0,1.57345e1,-4.25603e-1,2.9,6.40982,3.69339e-01); |
81db2705 | 156 | // fSignalShape->SetParameters(1.34330e+00,1.13007e+02,-4.95705e-01, |
157 | // 3.68911e+00,1.01040e+00, 3.94675e-01); | |
158 | fSignalShape->SetParameters(-1.07335e+00,2.16002e+01,-1.26133e-01, | |
159 | 1.41619e+00,5.50334e-01,3.86111e-01); | |
4e2652e8 | 160 | fPMResponse = new TF1("VZEROPMResponse",this,&AliVZERODigitizer::PMResponse,-kPMRespTime,2.*kPMRespTime,0,"AliVZERODigitizer","PMResponse"); |
161 | fSinglePhESpectrum = new TF1("VZEROSinglePhESpectrum",this,&AliVZERODigitizer::SinglePhESpectrum,0,20,0,"AliVZERODigitizer","SinglePhESpectrum"); | |
ce7090f5 | 162 | |
4e2652e8 | 163 | // Now get the CTP L0->L1 delay |
164 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming"); | |
165 | if (!entry) AliFatal("CTP timing parameters are not found in OCDB !"); | |
166 | AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject(); | |
167 | Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0; | |
168 | ||
7905581c | 169 | AliCDBEntry *entry1 = AliCDBManager::Instance()->Get("GRP/CTP/TimeAlign"); |
170 | if (!entry1) AliFatal("CTP time-alignment is not found in OCDB !"); | |
171 | AliCTPTimeParams *ctpTimeAlign = (AliCTPTimeParams*)entry1->GetObject(); | |
172 | l1Delay += ((Float_t)ctpTimeAlign->GetDelayL1L0()*25.0); | |
173 | ||
4e2652e8 | 174 | AliCDBEntry *entry2 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeDelays"); |
175 | if (!entry2) AliFatal("VZERO time delays are not found in OCDB !"); | |
176 | TH1F *delays = (TH1F*)entry2->GetObject(); | |
177 | ||
30d5d647 | 178 | AliCDBEntry *entry3 = AliCDBManager::Instance()->Get("GRP/Calib/LHCClockPhase"); |
179 | if (!entry3) AliFatal("LHC clock-phase shift is not found in OCDB !"); | |
180 | AliLHCClockPhase *phase = (AliLHCClockPhase*)entry3->GetObject(); | |
181 | ||
4e2652e8 | 182 | for(Int_t i = 0 ; i < 64; ++i) { |
183 | ||
184 | for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0; | |
185 | fLeadingTime[i] = fTimeWidth[i] = 0; | |
186 | ||
187 | fPmGain[i] = fCalibData->GetGain(i); | |
188 | ||
189 | fAdcPedestal[i][0] = fCalibData->GetPedestal(i); | |
190 | fAdcSigma[i][0] = fCalibData->GetSigma(i); | |
191 | fAdcPedestal[i][1] = fCalibData->GetPedestal(i+64); | |
192 | fAdcSigma[i][1] = fCalibData->GetSigma(i+64); | |
193 | ||
51980118 | 194 | Int_t board = AliVZEROCalibData::GetBoardNumber(i); |
4e2652e8 | 195 | fNBins[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0+ |
196 | (Float_t)kMaxTDCWidth*fCalibData->GetWidthResolution(board))/ | |
197 | fCalibData->GetTimeResolution(board)); | |
198 | fNBinsLT[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0)/ | |
199 | fCalibData->GetTimeResolution(board)); | |
200 | fBinSize[i] = fCalibData->GetTimeResolution(board); | |
87e3cdfb | 201 | fHptdcOffset[i] = (((Float_t)fCalibData->GetRollOver(board)- |
202 | (Float_t)fCalibData->GetTriggerCountOffset(board))*25.0+ | |
7905581c | 203 | fCalibData->GetTimeOffset(i)- |
30d5d647 | 204 | l1Delay- |
205 | phase->GetMeanPhase()+ | |
4e2652e8 | 206 | delays->GetBinContent(i+1)+ |
207 | kV0Offset); | |
72789100 | 208 | fClockOffset[i] = (((Float_t)fCalibData->GetRollOver(board)- |
209 | (Float_t)fCalibData->GetTriggerCountOffset(board))*25.0+ | |
210 | fCalibData->GetTimeOffset(i)- | |
211 | l1Delay+ | |
212 | kV0Offset); | |
4e2652e8 | 213 | |
214 | fTime[i] = new Float_t[fNBins[i]]; | |
215 | memset(fTime[i],0,fNBins[i]*sizeof(Float_t)); | |
216 | } | |
72da5ce8 | 217 | |
218 | return kTRUE; | |
9e04c3b6 | 219 | } |
9672d66e | 220 | |
72da5ce8 | 221 | //____________________________________________________________________________ |
f21fc003 | 222 | void AliVZERODigitizer::Digitize(Option_t* /*option*/) |
72da5ce8 | 223 | { |
224 | // Creates digits from hits | |
225 | fNdigits = 0; | |
226 | ||
f21fc003 | 227 | if (fVZERO && !fDigInput) { |
72da5ce8 | 228 | AliLoader *loader = fVZERO->GetLoader(); |
229 | if (!loader) { | |
230 | AliError("Can not get VZERO Loader via AliVZERO object!"); | |
231 | return; | |
232 | } | |
233 | AliRunLoader* runLoader = AliRunLoader::Instance(); | |
234 | for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); ++iEvent) { | |
235 | runLoader->GetEvent(iEvent); | |
236 | if (fTask == kHits2Digits) { | |
237 | DigitizeHits(); | |
238 | DigitizeSDigits(); | |
239 | WriteDigits(loader); | |
240 | } | |
241 | else { | |
242 | DigitizeHits(); | |
243 | WriteSDigits(loader); | |
244 | } | |
245 | } | |
4e2652e8 | 246 | } |
f21fc003 | 247 | else if (fDigInput) { |
72da5ce8 | 248 | ReadSDigits(); |
249 | DigitizeSDigits(); | |
f21fc003 | 250 | AliRunLoader *currentLoader = AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName()); |
72da5ce8 | 251 | AliLoader *loader = currentLoader->GetLoader("VZEROLoader"); |
252 | if (!loader) { | |
253 | AliError("Cannot get VZERO Loader via RunDigitizer!"); | |
254 | return; | |
255 | } | |
256 | WriteDigits(loader); | |
4e2652e8 | 257 | } |
72da5ce8 | 258 | else { |
259 | AliFatal("Invalid digitization task! Exiting!"); | |
4e2652e8 | 260 | } |
9e04c3b6 | 261 | } |
262 | ||
72da5ce8 | 263 | //____________________________________________________________________________ |
264 | void AliVZERODigitizer::AddDigit(Int_t pmnumber, Float_t time, Float_t width, Bool_t integrator, Short_t *chargeADC, Int_t *labels) | |
265 | { | |
266 | ||
267 | // Adds Digit | |
268 | ||
269 | TClonesArray &ldigits = *fDigits; | |
270 | ||
271 | new(ldigits[fNdigits++]) AliVZEROdigit(pmnumber,time,width,integrator,chargeADC,labels); | |
272 | ||
273 | } | |
274 | //____________________________________________________________________________ | |
275 | void AliVZERODigitizer::AddSDigit(Int_t pmnumber, Int_t nbins, Float_t *charges, Int_t *labels) | |
276 | { | |
277 | ||
278 | // Adds SDigit | |
279 | ||
280 | TClonesArray &ldigits = *fDigits; | |
281 | ||
282 | new(ldigits[fNdigits++]) AliVZEROSDigit(pmnumber,nbins,charges,labels); | |
283 | ||
284 | } | |
285 | //____________________________________________________________________________ | |
286 | void AliVZERODigitizer::ResetDigits() | |
9e04c3b6 | 287 | { |
9e04c3b6 | 288 | |
72da5ce8 | 289 | // Clears Digits |
290 | ||
291 | fNdigits = 0; | |
292 | if (fDigits) fDigits->Clear(); | |
9e04c3b6 | 293 | } |
294 | ||
295 | //____________________________________________________________________________ | |
72da5ce8 | 296 | AliVZEROCalibData* AliVZERODigitizer::GetCalibData() const |
297 | ||
298 | { | |
299 | AliCDBManager *man = AliCDBManager::Instance(); | |
300 | ||
301 | AliCDBEntry *entry=0; | |
302 | ||
303 | entry = man->Get("VZERO/Calib/Data"); | |
304 | ||
305 | // if(!entry){ | |
306 | // AliWarning("Load of calibration data from default storage failed!"); | |
307 | // AliWarning("Calibration data will be loaded from local storage ($ALICE_ROOT)"); | |
308 | // Int_t runNumber = man->GetRun(); | |
309 | // entry = man->GetStorage("local://$ALICE_ROOT/OCDB") | |
310 | // ->Get("VZERO/Calib/Data",runNumber); | |
311 | // | |
312 | // } | |
313 | ||
314 | // Retrieval of data in directory VZERO/Calib/Data: | |
315 | ||
316 | ||
317 | AliVZEROCalibData *calibdata = 0; | |
318 | ||
319 | if (entry) calibdata = (AliVZEROCalibData*) entry->GetObject(); | |
320 | if (!calibdata) AliFatal("No calibration data from calibration database !"); | |
321 | ||
322 | return calibdata; | |
323 | ||
324 | } | |
325 | ||
326 | double AliVZERODigitizer::SignalShape(double *x, double *par) | |
327 | { | |
328 | // this function simulates the time | |
329 | // of arrival of the photons at the | |
330 | // photocathode | |
331 | Double_t xx = x[0]; | |
332 | if (xx <= par[0]) return 0; | |
333 | Double_t a = 1./TMath::Power((xx-par[0])/par[1],1./par[2]); | |
334 | if (xx <= par[3]) return a; | |
335 | Double_t b = 1./TMath::Power((xx-par[3])/par[4],1./par[5]); | |
336 | Double_t f = a*b/(a+b); | |
337 | AliDebug(100,Form("x=%f func=%f",xx,f)); | |
338 | return f; | |
339 | } | |
340 | ||
341 | double AliVZERODigitizer::PMResponse(double *x, double * /* par */) | |
342 | { | |
343 | // this function describes the | |
344 | // PM time response to a single | |
345 | // photoelectron | |
346 | Double_t xx = x[0]+kPMRespTime; | |
347 | return xx*xx*TMath::Exp(-xx*xx/(kPMRespTime*kPMRespTime)); | |
348 | } | |
349 | ||
350 | double AliVZERODigitizer::SinglePhESpectrum(double *x, double * /* par */) | |
351 | { | |
352 | // this function describes the | |
353 | // PM amplitude response to a single | |
354 | // photoelectron | |
355 | Double_t xx = x[0]; | |
356 | if (xx < 0) return 0; | |
357 | return (TMath::Poisson(xx,kPMNbOfSecElec)+kPMTransparency*TMath::Poisson(xx,1.0)); | |
358 | } | |
359 | ||
360 | Int_t AliVZERODigitizer::Cell2Pmt(Int_t cell) const | |
361 | { | |
362 | // The method maps the scintillator | |
363 | // indexes to the PM ones | |
364 | if (cell < 0 || cell >= 80) { | |
365 | AliError(Form("Wrong VZERO cell index %d",cell)); | |
366 | return -1; | |
367 | } | |
368 | if (cell < 16) return cell; | |
369 | if (cell < 48) return 8 + cell/2; | |
370 | return cell - 16; | |
371 | } | |
372 | ||
373 | void AliVZERODigitizer::DigitizeHits() | |
374 | { | |
375 | // Digitize the hits to the level of | |
376 | // SDigits (fTime arrays) | |
4e2652e8 | 377 | |
378 | for(Int_t i = 0 ; i < 64; ++i) { | |
379 | memset(fTime[i],0,fNBins[i]*sizeof(Float_t)); | |
72da5ce8 | 380 | fLabels[i][0] = fLabels[i][1] = fLabels[i][2] = -1; |
fad64858 | 381 | } |
4e2652e8 | 382 | Float_t integral = fPMResponse->Integral(-kPMRespTime,2.*kPMRespTime); |
383 | Float_t meansPhE = fSinglePhESpectrum->Mean(0,20); | |
384 | ||
72da5ce8 | 385 | AliLoader* loader = fVZERO->GetLoader(); |
8bd3e27a | 386 | if (!loader) { |
72da5ce8 | 387 | AliError("Can not get VZERO Loader!"); |
388 | return; | |
389 | } | |
8bd3e27a | 390 | loader->LoadHits(); |
391 | TTree* treeH = loader->TreeH(); | |
392 | if (!treeH) { | |
72da5ce8 | 393 | AliError("Cannot get TreeH!"); |
394 | return; | |
395 | } | |
396 | TClonesArray* hits = fVZERO->Hits(); | |
4e2652e8 | 397 | |
b0d2c2d3 | 398 | // Now makes Digits from hits |
8bd3e27a | 399 | Int_t nTracks = (Int_t) treeH->GetEntries(); |
400 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
72da5ce8 | 401 | fVZERO->ResetHits(); |
8bd3e27a | 402 | treeH->GetEvent(iTrack); |
403 | Int_t nHits = hits->GetEntriesFast(); | |
404 | for (Int_t iHit = 0; iHit < nHits; iHit++) { | |
4e2652e8 | 405 | AliVZEROhit* hit = (AliVZEROhit *)hits->UncheckedAt(iHit); |
406 | Int_t nPhot = hit->Nphot(); | |
407 | Int_t cell = hit->Cell(); | |
408 | Int_t pmt = Cell2Pmt(cell); | |
127e0d90 | 409 | if (pmt < 0) continue; |
30c4ff64 | 410 | Int_t trackLabel = hit->GetTrack(); |
411 | for(Int_t l = 0; l < 3; ++l) { | |
72da5ce8 | 412 | if (fLabels[pmt][l] < 0) { |
413 | fLabels[pmt][l] = trackLabel; | |
30c4ff64 | 414 | break; |
415 | } | |
416 | } | |
4e2652e8 | 417 | Float_t dt_scintillator = gRandom->Gaus(0,kIntTimeRes); |
418 | Float_t t = dt_scintillator + 1e9*hit->Tof(); | |
419 | if (pmt < 32) t += kV0CDelayCables; | |
420 | t += fHptdcOffset[pmt]; | |
421 | Int_t nPhE; | |
3772afd5 | 422 | Float_t prob = fCalibData->GetLightYields(pmt)*fPhotoCathodeEfficiency; // Optical losses included! |
4e2652e8 | 423 | if (nPhot > 100) |
d0ff6548 | 424 | nPhE = (Int_t)gRandom->Gaus(prob*Float_t(nPhot)+0.5, |
425 | sqrt(Float_t(nPhot)*prob*(1.-prob))); | |
4e2652e8 | 426 | else |
427 | nPhE = gRandom->Binomial(nPhot,prob); | |
428 | Float_t charge = TMath::Qe()*fPmGain[pmt]*fBinSize[pmt]/integral; | |
429 | for (Int_t iPhE = 0; iPhE < nPhE; ++iPhE) { | |
430 | Float_t tPhE = t + fSignalShape->GetRandom(0,fBinSize[pmt]*Float_t(fNBins[pmt])); | |
431 | Float_t gainVar = fSinglePhESpectrum->GetRandom(0,20)/meansPhE; | |
432 | Int_t firstBin = TMath::Max(0,(Int_t)((tPhE-kPMRespTime)/fBinSize[pmt])); | |
433 | Int_t lastBin = TMath::Min(fNBins[pmt]-1,(Int_t)((tPhE+2.*kPMRespTime)/fBinSize[pmt])); | |
434 | for(Int_t iBin = firstBin; iBin <= lastBin; ++iBin) { | |
435 | Float_t tempT = fBinSize[pmt]*(0.5+iBin)-tPhE; | |
436 | fTime[pmt][iBin] += gainVar*charge*fPMResponse->Eval(tempT); | |
437 | } | |
438 | } // ph.e. loop | |
439 | } // hit loop | |
440 | } // track loop | |
8bd3e27a | 441 | loader->UnloadHits(); |
72da5ce8 | 442 | } |
443 | ||
444 | ||
445 | void AliVZERODigitizer::DigitizeSDigits() | |
446 | { | |
447 | // Digitize the fTime arrays (SDigits) to the level of | |
448 | // Digits (fAdc arrays) | |
449 | for(Int_t i = 0 ; i < 64; ++i) { | |
450 | for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0; | |
451 | fLeadingTime[i] = fTimeWidth[i] = 0; | |
452 | } | |
4e2652e8 | 453 | |
454 | Float_t maximum = 0.9*fSignalShape->GetMaximum(0,200); // Not exact, one needs to do this on the convoluted | |
455 | Float_t integral2 = fSignalShape->Integral(0,200); // function. Anyway the effect is small <10% on the 2.5 ADC thr | |
456 | for (Int_t ipmt = 0; ipmt < 64; ++ipmt) { | |
ed1ea59f | 457 | Float_t thr = fCalibData->GetCalibDiscriThr(ipmt,kFALSE)*kChargePerADC*maximum*fBinSize[ipmt]/integral2; |
4e2652e8 | 458 | Bool_t ltFound = kFALSE, ttFound = kFALSE; |
459 | for (Int_t iBin = 0; iBin < fNBins[ipmt]; ++iBin) { | |
b6fd9c4a | 460 | Float_t t = fBinSize[ipmt]*Float_t(iBin); |
4e2652e8 | 461 | if (fTime[ipmt][iBin] > thr) { |
462 | if (!ltFound && (iBin < fNBinsLT[ipmt])) { | |
463 | ltFound = kTRUE; | |
464 | fLeadingTime[ipmt] = t; | |
465 | } | |
466 | } | |
467 | else { | |
468 | if (ltFound) { | |
469 | if (!ttFound) { | |
470 | ttFound = kTRUE; | |
471 | fTimeWidth[ipmt] = t - fLeadingTime[ipmt]; | |
472 | } | |
473 | } | |
474 | } | |
72789100 | 475 | Float_t tadc = t - fClockOffset[ipmt]; |
d0ff6548 | 476 | Int_t clock = kNClocks/2 - Int_t(tadc/25.0); |
4e2652e8 | 477 | if (clock >= 0 && clock < kNClocks) |
478 | fAdc[ipmt][clock] += fTime[ipmt][iBin]/kChargePerADC; | |
479 | } | |
72789100 | 480 | AliDebug(1,Form("Channel %d Offset %f Time %f",ipmt,fClockOffset[ipmt],fLeadingTime[ipmt])); |
51980118 | 481 | Int_t board = AliVZEROCalibData::GetBoardNumber(ipmt); |
4e2652e8 | 482 | if (ltFound && ttFound) { |
483 | fTimeWidth[ipmt] = fCalibData->GetWidthResolution(board)* | |
484 | Float_t(Int_t(fTimeWidth[ipmt]/fCalibData->GetWidthResolution(board))); | |
485 | if (fTimeWidth[ipmt] < Float_t(kMinTDCWidth)*fCalibData->GetWidthResolution(board)) | |
486 | fTimeWidth[ipmt] = Float_t(kMinTDCWidth)*fCalibData->GetWidthResolution(board); | |
487 | if (fTimeWidth[ipmt] > Float_t(kMaxTDCWidth)*fCalibData->GetWidthResolution(board)) | |
488 | fTimeWidth[ipmt] = Float_t(kMaxTDCWidth)*fCalibData->GetWidthResolution(board); | |
489 | } | |
490 | } | |
b0d2c2d3 | 491 | |
72da5ce8 | 492 | fEvenOrOdd = gRandom->Integer(2); |
4e2652e8 | 493 | for (Int_t j=0; j<64; ++j){ |
494 | for (Int_t iClock = 0; iClock < kNClocks; ++iClock) { | |
72da5ce8 | 495 | Int_t integrator = (iClock + fEvenOrOdd) % 2; |
72789100 | 496 | AliDebug(1,Form("ADC %d %d %f",j,iClock,fAdc[j][iClock])); |
4e2652e8 | 497 | fAdc[j][iClock] += gRandom->Gaus(fAdcPedestal[j][integrator], fAdcSigma[j][integrator]); |
498 | } | |
499 | } | |
20277079 | 500 | |
72da5ce8 | 501 | } |
502 | ||
503 | void AliVZERODigitizer::WriteDigits(AliLoader *loader) | |
504 | { | |
505 | // Take fAdc arrays filled by the previous | |
506 | // method and produce and add digits to the digit Tree | |
507 | ||
508 | loader->LoadDigits("UPDATE"); | |
4e2652e8 | 509 | |
72da5ce8 | 510 | if (!loader->TreeD()) loader->MakeTree("D"); |
511 | loader->MakeDigitsContainer(); | |
512 | TTree* treeD = loader->TreeD(); | |
513 | DigitsArray(); | |
f61f3124 | 514 | treeD->Branch("VZERODigit", "TClonesArray", &fDigits); |
72da5ce8 | 515 | |
30c4ff64 | 516 | Short_t *chargeADC = new Short_t[kNClocks]; |
4e2652e8 | 517 | for (Int_t i=0; i<64; i++) { |
30c4ff64 | 518 | for (Int_t j = 0; j < kNClocks; ++j) { |
4e2652e8 | 519 | Int_t tempadc = Int_t(fAdc[i][j]); |
520 | if (tempadc > 1023) tempadc = 1023; | |
30c4ff64 | 521 | chargeADC[j] = tempadc; |
4e2652e8 | 522 | } |
72da5ce8 | 523 | AddDigit(i, fLeadingTime[i], fTimeWidth[i], Bool_t((10+fEvenOrOdd)%2), chargeADC, fLabels[i]); |
4e2652e8 | 524 | } |
30c4ff64 | 525 | delete [] chargeADC; |
4e2652e8 | 526 | |
b0d2c2d3 | 527 | treeD->Fill(); |
72da5ce8 | 528 | loader->WriteDigits("OVERWRITE"); |
529 | loader->UnloadDigits(); | |
530 | ResetDigits(); | |
9e04c3b6 | 531 | } |
532 | ||
72da5ce8 | 533 | void AliVZERODigitizer::WriteSDigits(AliLoader *loader) |
9e04c3b6 | 534 | { |
72da5ce8 | 535 | // Take fTime arrays filled by the previous |
536 | // method and produce and add sdigits to the sdigit Tree | |
fe0adf2a | 537 | |
72da5ce8 | 538 | loader->LoadSDigits("UPDATE"); |
fe0adf2a | 539 | |
72da5ce8 | 540 | if (!loader->TreeS()) loader->MakeTree("S"); |
541 | loader->MakeSDigitsContainer(); | |
542 | TTree* treeS = loader->TreeS(); | |
543 | SDigitsArray(); | |
f61f3124 | 544 | treeS->Branch("VZEROSDigit", "TClonesArray", &fDigits); |
72da5ce8 | 545 | |
546 | for (Int_t ipmt = 0; ipmt < 64; ++ipmt) { | |
547 | AddSDigit(ipmt,fNBins[ipmt],fTime[ipmt],fLabels[ipmt]); | |
548 | } | |
ce7090f5 | 549 | |
72da5ce8 | 550 | treeS->Fill(); |
551 | loader->WriteSDigits("OVERWRITE"); | |
552 | loader->UnloadSDigits(); | |
553 | ResetDigits(); | |
554 | } | |
ce7090f5 | 555 | |
72da5ce8 | 556 | void AliVZERODigitizer::ReadSDigits() |
ce7090f5 | 557 | { |
72da5ce8 | 558 | // Read SDigits which are then to precessed |
559 | // in the following method | |
560 | for(Int_t i = 0 ; i < 64; ++i) { | |
561 | memset(fTime[i],0,fNBins[i]*sizeof(Float_t)); | |
562 | fLabels[i][0] = fLabels[i][1] = fLabels[i][2] = -1; | |
563 | } | |
ce7090f5 | 564 | |
72da5ce8 | 565 | // Loop over input files |
f21fc003 | 566 | Int_t nFiles= fDigInput->GetNinputs(); |
72da5ce8 | 567 | for (Int_t inputFile = 0; inputFile < nFiles; inputFile++) { |
568 | // Get the current loader | |
569 | AliRunLoader* currentLoader = | |
f21fc003 | 570 | AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(inputFile)); |
ce7090f5 | 571 | |
72da5ce8 | 572 | AliLoader *loader = currentLoader->GetLoader("VZEROLoader"); |
573 | loader->LoadSDigits("READ"); | |
574 | ||
575 | // Get the tree of summable digits | |
576 | TTree* sdigitsTree = loader->TreeS(); | |
577 | if (!sdigitsTree) { | |
f21fc003 | 578 | AliError("No sdigit tree from digInput"); |
72da5ce8 | 579 | continue; |
580 | } | |
ce7090f5 | 581 | |
72da5ce8 | 582 | // Get the branch |
583 | TBranch* sdigitsBranch = sdigitsTree->GetBranch("VZEROSDigit"); | |
584 | if (!sdigitsBranch) { | |
585 | AliError("Failed to get sdigit branch"); | |
586 | return; | |
587 | } | |
4e2652e8 | 588 | |
72da5ce8 | 589 | // Set the branch address |
590 | TClonesArray *sdigitsArray = NULL; | |
591 | sdigitsBranch->SetAddress(&sdigitsArray); | |
592 | ||
593 | // Sum contributions from the sdigits | |
594 | // Get number of entries in the tree | |
595 | Int_t nentries = Int_t(sdigitsBranch->GetEntries()); | |
596 | for (Int_t entry = 0; entry < nentries; ++entry) { | |
597 | sdigitsBranch->GetEntry(entry); | |
598 | // Get the number of sdigits | |
599 | Int_t nsdigits = sdigitsArray->GetEntries(); | |
600 | for (Int_t sdigit = 0; sdigit < nsdigits; sdigit++) { | |
601 | AliVZEROSDigit* sDigit = static_cast<AliVZEROSDigit*>(sdigitsArray->UncheckedAt(sdigit)); | |
602 | Int_t pmNumber = sDigit->PMNumber(); | |
603 | Int_t nbins = sDigit->GetNBins(); | |
604 | if (nbins != fNBins[pmNumber]) { | |
605 | AliError(Form("Incompatible number of bins between digitizer (%d) and sdigit (%d) for PM %d! Skipping sdigit!", | |
606 | fNBins[pmNumber],nbins,pmNumber)); | |
607 | continue; | |
608 | } | |
609 | // Sum the charges | |
610 | Float_t *charges = sDigit->GetCharges(); | |
611 | for(Int_t iBin = 0; iBin < nbins; ++iBin) fTime[pmNumber][iBin] += charges[iBin]; | |
612 | // and the labels | |
613 | Int_t *labels = sDigit->GetTracks(); | |
614 | Int_t j = 0; | |
615 | for(Int_t i = 0; i < 3; ++i) { | |
616 | if (fLabels[pmNumber][i] < 0) { | |
617 | if (labels[j] < 0) break; | |
618 | fLabels[pmNumber][i] = labels[j]; | |
619 | j++; | |
620 | } | |
621 | } | |
622 | } | |
623 | } | |
624 | loader->UnloadSDigits(); | |
625 | } | |
4e2652e8 | 626 | } |
627 | ||
72da5ce8 | 628 | //____________________________________________________________________ |
629 | TClonesArray* | |
630 | AliVZERODigitizer::DigitsArray() | |
4e2652e8 | 631 | { |
72da5ce8 | 632 | // Initialize digit array if not already and |
633 | // return pointer to it. | |
634 | if (!fDigits) { | |
635 | fDigits = new TClonesArray("AliVZEROdigit", 64); | |
636 | fNdigits = 0; | |
637 | } | |
638 | return fDigits; | |
4e2652e8 | 639 | } |
640 | ||
72da5ce8 | 641 | //____________________________________________________________________ |
642 | TClonesArray* | |
643 | AliVZERODigitizer::SDigitsArray() | |
4e2652e8 | 644 | { |
72da5ce8 | 645 | // Initialize sdigit array if not already and |
646 | // return pointer to it. | |
647 | if (!fDigits) { | |
648 | fDigits = new TClonesArray("AliVZEROSDigit", 64); | |
649 | fNdigits = 0; | |
4e2652e8 | 650 | } |
72da5ce8 | 651 | return fDigits; |
4e2652e8 | 652 | } |