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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" |
9e04c3b6 | 44 | #include "AliRunDigitizer.h" |
ce7090f5 | 45 | #include "AliCDBManager.h" |
46 | #include "AliCDBStorage.h" | |
47 | #include "AliCDBEntry.h" | |
48 | #include "AliVZEROCalibData.h" | |
4e2652e8 | 49 | #include "AliCTPTimeParams.h" |
9e04c3b6 | 50 | #include "AliVZEROdigit.h" |
b0d2c2d3 | 51 | #include "AliVZERODigitizer.h" |
9e04c3b6 | 52 | |
53 | ClassImp(AliVZERODigitizer) | |
54 | ||
55 | AliVZERODigitizer::AliVZERODigitizer() | |
fe0adf2a | 56 | :AliDigitizer(), |
57 | fCalibData(GetCalibData()), | |
58 | fPhotoCathodeEfficiency(0.18), | |
fe0adf2a | 59 | fNdigits(0), |
60 | fDigits(0), | |
4e2652e8 | 61 | fSignalShape(NULL), |
62 | fPMResponse(NULL), | |
63 | fSinglePhESpectrum(NULL) | |
0b2bea8b | 64 | |
9e04c3b6 | 65 | { |
b0d2c2d3 | 66 | // default constructor |
67 | ||
0b2bea8b | 68 | // fNdigits = 0; |
69 | // fDigits = 0; | |
70 | // | |
71 | // fPhotoCathodeEfficiency = 0.18; | |
72 | // fPMVoltage = 768.0; | |
73 | // fPMGain = TMath::Power((fPMVoltage / 112.5) ,7.04277); | |
ce7090f5 | 74 | |
0b2bea8b | 75 | // fCalibData = GetCalibData(); |
9672d66e | 76 | |
77 | fSignalShape = new TF1("VZEROSignalShape",this,&AliVZERODigitizer::SignalShape,0,200,6,"AliVZERODigitizer","SignalShape"); | |
4e2652e8 | 78 | // fSignalShape->SetParameters(0,1.57345e1,-4.25603e-1,2.9,6.40982,3.69339e-01); |
81db2705 | 79 | // fSignalShape->SetParameters(1.34330e+00,1.13007e+02,-4.95705e-01, |
80 | // 3.68911e+00,1.01040e+00, 3.94675e-01); | |
81 | fSignalShape->SetParameters(-1.07335e+00,2.16002e+01,-1.26133e-01, | |
82 | 1.41619e+00,5.50334e-01,3.86111e-01); | |
83 | ||
4e2652e8 | 84 | fPMResponse = new TF1("VZEROPMResponse",this,&AliVZERODigitizer::PMResponse,-kPMRespTime,2.*kPMRespTime,0,"AliVZERODigitizer","PMResponse"); |
85 | fSinglePhESpectrum = new TF1("VZEROSinglePhESpectrum",this,&AliVZERODigitizer::SinglePhESpectrum,0,20,0,"AliVZERODigitizer","SinglePhESpectrum"); | |
86 | ||
87 | // Now get the CTP L0->L1 delay | |
88 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming"); | |
89 | if (!entry) AliFatal("CTP timing parameters are not found in OCDB !"); | |
90 | AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject(); | |
91 | Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0; | |
92 | ||
93 | AliCDBEntry *entry2 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeDelays"); | |
94 | if (!entry2) AliFatal("VZERO time delays are not found in OCDB !"); | |
95 | TH1F *delays = (TH1F*)entry2->GetObject(); | |
96 | ||
97 | for(Int_t i = 0 ; i < 64; ++i) { | |
98 | ||
99 | for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0; | |
100 | fLeadingTime[i] = fTimeWidth[i] = 0; | |
101 | ||
102 | fPmGain[i] = fCalibData->GetGain(i); | |
103 | ||
104 | fAdcPedestal[i][0] = fCalibData->GetPedestal(i); | |
105 | fAdcSigma[i][0] = fCalibData->GetSigma(i); | |
106 | fAdcPedestal[i][1] = fCalibData->GetPedestal(i+64); | |
107 | fAdcSigma[i][1] = fCalibData->GetSigma(i+64); | |
108 | ||
51980118 | 109 | Int_t board = AliVZEROCalibData::GetBoardNumber(i); |
4e2652e8 | 110 | fNBins[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0+ |
111 | (Float_t)kMaxTDCWidth*fCalibData->GetWidthResolution(board))/ | |
112 | fCalibData->GetTimeResolution(board)); | |
113 | fNBinsLT[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0)/ | |
114 | fCalibData->GetTimeResolution(board)); | |
115 | fBinSize[i] = fCalibData->GetTimeResolution(board); | |
116 | fHptdcOffset[i] = (((Float_t)fCalibData->GetTriggerCountOffset(board)- | |
117 | (Float_t)fCalibData->GetRollOver(board))*25.0+ | |
118 | fCalibData->GetTimeOffset(i)+ | |
119 | l1Delay+ | |
120 | delays->GetBinContent(i+1)+ | |
121 | kV0Offset); | |
122 | ||
123 | fTime[i] = new Float_t[fNBins[i]]; | |
124 | memset(fTime[i],0,fNBins[i]*sizeof(Float_t)); | |
125 | } | |
126 | ||
9e04c3b6 | 127 | } |
128 | ||
129 | //____________________________________________________________________________ | |
130 | AliVZERODigitizer::AliVZERODigitizer(AliRunDigitizer* manager) | |
0b2bea8b | 131 | :AliDigitizer(manager), |
132 | fCalibData(GetCalibData()), | |
133 | fPhotoCathodeEfficiency(0.18), | |
0b2bea8b | 134 | fNdigits(0), |
fe0adf2a | 135 | fDigits(0), |
4e2652e8 | 136 | fSignalShape(NULL), |
137 | fPMResponse(NULL), | |
138 | fSinglePhESpectrum(NULL) | |
0b2bea8b | 139 | |
9e04c3b6 | 140 | { |
141 | // constructor | |
4e2652e8 | 142 | // Initialize OCDB and containers used in the digitization |
9e04c3b6 | 143 | |
9672d66e | 144 | fSignalShape = new TF1("VZEROSignalShape",this,&AliVZERODigitizer::SignalShape,0,200,6,"AliVZERODigitizer","SignalShape"); |
4e2652e8 | 145 | // fSignalShape->SetParameters(0,1.57345e1,-4.25603e-1,2.9,6.40982,3.69339e-01); |
81db2705 | 146 | // fSignalShape->SetParameters(1.34330e+00,1.13007e+02,-4.95705e-01, |
147 | // 3.68911e+00,1.01040e+00, 3.94675e-01); | |
148 | fSignalShape->SetParameters(-1.07335e+00,2.16002e+01,-1.26133e-01, | |
149 | 1.41619e+00,5.50334e-01,3.86111e-01); | |
4e2652e8 | 150 | fPMResponse = new TF1("VZEROPMResponse",this,&AliVZERODigitizer::PMResponse,-kPMRespTime,2.*kPMRespTime,0,"AliVZERODigitizer","PMResponse"); |
151 | fSinglePhESpectrum = new TF1("VZEROSinglePhESpectrum",this,&AliVZERODigitizer::SinglePhESpectrum,0,20,0,"AliVZERODigitizer","SinglePhESpectrum"); | |
ce7090f5 | 152 | |
4e2652e8 | 153 | // Now get the CTP L0->L1 delay |
154 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming"); | |
155 | if (!entry) AliFatal("CTP timing parameters are not found in OCDB !"); | |
156 | AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject(); | |
157 | Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0; | |
158 | ||
159 | AliCDBEntry *entry2 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeDelays"); | |
160 | if (!entry2) AliFatal("VZERO time delays are not found in OCDB !"); | |
161 | TH1F *delays = (TH1F*)entry2->GetObject(); | |
162 | ||
163 | for(Int_t i = 0 ; i < 64; ++i) { | |
164 | ||
165 | for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0; | |
166 | fLeadingTime[i] = fTimeWidth[i] = 0; | |
167 | ||
168 | fPmGain[i] = fCalibData->GetGain(i); | |
169 | ||
170 | fAdcPedestal[i][0] = fCalibData->GetPedestal(i); | |
171 | fAdcSigma[i][0] = fCalibData->GetSigma(i); | |
172 | fAdcPedestal[i][1] = fCalibData->GetPedestal(i+64); | |
173 | fAdcSigma[i][1] = fCalibData->GetSigma(i+64); | |
174 | ||
51980118 | 175 | Int_t board = AliVZEROCalibData::GetBoardNumber(i); |
4e2652e8 | 176 | fNBins[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0+ |
177 | (Float_t)kMaxTDCWidth*fCalibData->GetWidthResolution(board))/ | |
178 | fCalibData->GetTimeResolution(board)); | |
179 | fNBinsLT[i] = TMath::Nint(((Float_t)(fCalibData->GetMatchWindow(board)+1)*25.0)/ | |
180 | fCalibData->GetTimeResolution(board)); | |
181 | fBinSize[i] = fCalibData->GetTimeResolution(board); | |
182 | fHptdcOffset[i] = (((Float_t)fCalibData->GetTriggerCountOffset(board)- | |
183 | (Float_t)fCalibData->GetRollOver(board))*25.0+ | |
184 | fCalibData->GetTimeOffset(i)+ | |
185 | l1Delay+ | |
186 | delays->GetBinContent(i+1)+ | |
187 | kV0Offset); | |
188 | ||
189 | fTime[i] = new Float_t[fNBins[i]]; | |
190 | memset(fTime[i],0,fNBins[i]*sizeof(Float_t)); | |
191 | } | |
9e04c3b6 | 192 | } |
193 | ||
194 | //____________________________________________________________________________ | |
195 | AliVZERODigitizer::~AliVZERODigitizer() | |
196 | { | |
197 | // destructor | |
198 | ||
199 | if (fDigits) { | |
200 | fDigits->Delete(); | |
201 | delete fDigits; | |
b0d2c2d3 | 202 | fDigits=0; |
203 | } | |
9672d66e | 204 | |
205 | if (fSignalShape) { | |
206 | delete fSignalShape; | |
207 | fSignalShape = NULL; | |
208 | } | |
4e2652e8 | 209 | if (fPMResponse) { |
210 | delete fPMResponse; | |
211 | fPMResponse = NULL; | |
212 | } | |
213 | if (fSinglePhESpectrum) { | |
214 | delete fSinglePhESpectrum; | |
215 | fSinglePhESpectrum = NULL; | |
216 | } | |
217 | ||
218 | for(Int_t i = 0 ; i < 64; ++i) { | |
219 | if (fTime[i]) delete [] fTime[i]; | |
220 | } | |
9e04c3b6 | 221 | } |
222 | ||
b0d2c2d3 | 223 | //_____________________________________________________________________________ |
224 | Bool_t AliVZERODigitizer::Init() | |
9e04c3b6 | 225 | { |
b0d2c2d3 | 226 | // Initialises the digitizer |
9e04c3b6 | 227 | |
b0d2c2d3 | 228 | // Initialises the Digit array |
9e04c3b6 | 229 | fDigits = new TClonesArray ("AliVZEROdigit", 1000); |
8bd3e27a | 230 | |
b0d2c2d3 | 231 | return kTRUE; |
9e04c3b6 | 232 | } |
233 | ||
234 | //____________________________________________________________________________ | |
b0d2c2d3 | 235 | void AliVZERODigitizer::Exec(Option_t* /*option*/) |
ce7090f5 | 236 | { |
b0d2c2d3 | 237 | // Creates digits from hits |
ce7090f5 | 238 | fNdigits = 0; |
4e2652e8 | 239 | |
30c4ff64 | 240 | Int_t labels[64][3]; |
4e2652e8 | 241 | for(Int_t i = 0 ; i < 64; ++i) { |
242 | memset(fTime[i],0,fNBins[i]*sizeof(Float_t)); | |
243 | for(Int_t j = 0; j < kNClocks; ++j) fAdc[i][j] = 0; | |
244 | fLeadingTime[i] = fTimeWidth[i] = 0; | |
30c4ff64 | 245 | labels[i][0] = labels[i][1] = labels[i][2] = -1; |
fad64858 | 246 | } |
4e2652e8 | 247 | Float_t integral = fPMResponse->Integral(-kPMRespTime,2.*kPMRespTime); |
248 | Float_t meansPhE = fSinglePhESpectrum->Mean(0,20); | |
249 | ||
fad64858 | 250 | AliRunLoader* outRunLoader = AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); |
b0d2c2d3 | 251 | if (!outRunLoader) { |
252 | Error("Exec", "Can not get output Run Loader"); | |
fad64858 | 253 | return; |
254 | } | |
ce7090f5 | 255 | |
b0d2c2d3 | 256 | AliLoader* outLoader = outRunLoader->GetLoader("VZEROLoader"); |
fad64858 | 257 | |
b0d2c2d3 | 258 | if (!outLoader) { |
259 | Error("Exec", "Can not get output VZERO Loader"); | |
fad64858 | 260 | return; |
261 | } | |
b0d2c2d3 | 262 | |
e539620f | 263 | const char* mode = "update"; |
264 | if(outRunLoader->GetEventNumber() == 0) mode = "recreate"; | |
265 | outLoader->LoadDigits(mode); | |
fad64858 | 266 | |
b0d2c2d3 | 267 | if (!outLoader->TreeD()) outLoader->MakeTree("D"); |
268 | outLoader->MakeDigitsContainer(); | |
ce7090f5 | 269 | TTree* treeD = outLoader->TreeD(); |
b0d2c2d3 | 270 | Int_t bufsize = 16000; |
271 | treeD->Branch("VZERODigit", &fDigits, bufsize); | |
c299dbe4 | 272 | |
b0d2c2d3 | 273 | for (Int_t iInput = 0; iInput < fManager->GetNinputs(); iInput++) { |
fad64858 | 274 | AliRunLoader* runLoader = AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); |
8bd3e27a | 275 | AliLoader* loader = runLoader->GetLoader("VZEROLoader"); |
276 | if (!loader) { | |
277 | Error("Exec", "Can not get VZERO Loader for input %d", iInput); | |
fad64858 | 278 | continue; |
279 | } | |
ce7090f5 | 280 | |
8bd3e27a | 281 | if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); |
b0d2c2d3 | 282 | |
8bd3e27a | 283 | AliVZERO* vzero = (AliVZERO*) runLoader->GetAliRun()->GetDetector("VZERO"); |
284 | if (!vzero) { | |
285 | Error("Exec", "No VZERO detector for input %d", iInput); | |
fad64858 | 286 | continue; |
287 | } | |
9e04c3b6 | 288 | |
8bd3e27a | 289 | loader->LoadHits(); |
290 | TTree* treeH = loader->TreeH(); | |
291 | if (!treeH) { | |
292 | Error("Exec", "Cannot get TreeH for input %d", iInput); | |
fad64858 | 293 | continue; |
294 | } | |
c299dbe4 | 295 | |
8bd3e27a | 296 | TClonesArray* hits = vzero->Hits(); |
4e2652e8 | 297 | |
298 | // Float_t lightYieldCorr[64] = {0.00707,0.00517,0.00520,0.00537,0.00735,0.00537,0.00733,0.00605,0.00778,0.00749,0.00701,0.00755,0.00732,0.00617,0.00669,0.00525,0.00752,0.00820,0.00797,0.01107,0.01080,0.00889,0.00880,0.01712,0.00866,0.00701,0.00811,0.00602,0.00879,0.00821,0.00861,0.01433,0.00061,0.00032,0.00099,0.00061,0.00034,0.00046,0.00031,0.00122,0.00155,0.00091,0.00032,0.00096,0.00120,0.00067,0.00113,0.00060,0.00158,0.00136,0.00340,0.00066,0.00076,0.00119,0.00129,0.00147,0.00137,0.00117,0.00088,0.00164,0.00128,0.00081,0.00121,0.00250}; | |
299 | Float_t lightYieldCorr[64] = {0.01173,0.00874,0.00878,0.00886,0.01151,0.00925,0.01167,0.00983,0.01181,0.01243,0.01115,0.01220,0.01228,0.01053,0.01021,0.00930,0.01270,0.01411,0.01316,0.01894,0.01923,0.01860,0.01738,0.00305,0.01584,0.01251,0.01344,0.00310,0.01302,0.01266,0.01407,0.00338,0.00089,0.00100,0.00130,0.00081,0.00052,0.01230,0.00059,0.02452,0.02980,0.00137,0.01421,0.00116,0.00141,0.00092,0.02480,0.00096,0.00182,0.00174,0.00218,0.00106,0.00116,0.00160,0.00162,0.03097,0.00194,0.00171,0.00132,0.00239,0.00173,0.00118,0.00163,0.00262}; | |
b0d2c2d3 | 300 | // Now makes Digits from hits |
8bd3e27a | 301 | Int_t nTracks = (Int_t) treeH->GetEntries(); |
302 | for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) { | |
8bd3e27a | 303 | vzero->ResetHits(); |
304 | treeH->GetEvent(iTrack); | |
305 | Int_t nHits = hits->GetEntriesFast(); | |
306 | for (Int_t iHit = 0; iHit < nHits; iHit++) { | |
4e2652e8 | 307 | AliVZEROhit* hit = (AliVZEROhit *)hits->UncheckedAt(iHit); |
308 | Int_t nPhot = hit->Nphot(); | |
309 | Int_t cell = hit->Cell(); | |
310 | Int_t pmt = Cell2Pmt(cell); | |
30c4ff64 | 311 | Int_t trackLabel = hit->GetTrack(); |
312 | for(Int_t l = 0; l < 3; ++l) { | |
313 | if (labels[pmt][l] < 0) { | |
314 | labels[pmt][l] = trackLabel; | |
315 | break; | |
316 | } | |
317 | } | |
4e2652e8 | 318 | Float_t dt_scintillator = gRandom->Gaus(0,kIntTimeRes); |
319 | Float_t t = dt_scintillator + 1e9*hit->Tof(); | |
320 | if (pmt < 32) t += kV0CDelayCables; | |
321 | t += fHptdcOffset[pmt]; | |
322 | Int_t nPhE; | |
323 | Float_t prob = lightYieldCorr[pmt]*fPhotoCathodeEfficiency; // Optical losses included! | |
324 | if (nPhot > 100) | |
d0ff6548 | 325 | nPhE = (Int_t)gRandom->Gaus(prob*Float_t(nPhot)+0.5, |
326 | sqrt(Float_t(nPhot)*prob*(1.-prob))); | |
4e2652e8 | 327 | else |
328 | nPhE = gRandom->Binomial(nPhot,prob); | |
329 | Float_t charge = TMath::Qe()*fPmGain[pmt]*fBinSize[pmt]/integral; | |
330 | for (Int_t iPhE = 0; iPhE < nPhE; ++iPhE) { | |
331 | Float_t tPhE = t + fSignalShape->GetRandom(0,fBinSize[pmt]*Float_t(fNBins[pmt])); | |
332 | Float_t gainVar = fSinglePhESpectrum->GetRandom(0,20)/meansPhE; | |
333 | Int_t firstBin = TMath::Max(0,(Int_t)((tPhE-kPMRespTime)/fBinSize[pmt])); | |
334 | Int_t lastBin = TMath::Min(fNBins[pmt]-1,(Int_t)((tPhE+2.*kPMRespTime)/fBinSize[pmt])); | |
335 | for(Int_t iBin = firstBin; iBin <= lastBin; ++iBin) { | |
336 | Float_t tempT = fBinSize[pmt]*(0.5+iBin)-tPhE; | |
337 | fTime[pmt][iBin] += gainVar*charge*fPMResponse->Eval(tempT); | |
338 | } | |
339 | } // ph.e. loop | |
340 | } // hit loop | |
341 | } // track loop | |
8bd3e27a | 342 | loader->UnloadHits(); |
4e2652e8 | 343 | } // input loop |
344 | ||
345 | Float_t maximum = 0.9*fSignalShape->GetMaximum(0,200); // Not exact, one needs to do this on the convoluted | |
346 | Float_t integral2 = fSignalShape->Integral(0,200); // function. Anyway the effect is small <10% on the 2.5 ADC thr | |
347 | for (Int_t ipmt = 0; ipmt < 64; ++ipmt) { | |
348 | Float_t thr = fCalibData->GetDiscriThr(ipmt)*kChargePerADC*maximum*fBinSize[ipmt]/integral2; | |
349 | Bool_t ltFound = kFALSE, ttFound = kFALSE; | |
350 | for (Int_t iBin = 0; iBin < fNBins[ipmt]; ++iBin) { | |
b6fd9c4a | 351 | Float_t t = fBinSize[ipmt]*Float_t(iBin); |
4e2652e8 | 352 | if (fTime[ipmt][iBin] > thr) { |
353 | if (!ltFound && (iBin < fNBinsLT[ipmt])) { | |
354 | ltFound = kTRUE; | |
355 | fLeadingTime[ipmt] = t; | |
356 | } | |
357 | } | |
358 | else { | |
359 | if (ltFound) { | |
360 | if (!ttFound) { | |
361 | ttFound = kTRUE; | |
362 | fTimeWidth[ipmt] = t - fLeadingTime[ipmt]; | |
363 | } | |
364 | } | |
365 | } | |
d0ff6548 | 366 | Float_t tadc = t - kClockOffset - fCalibData->GetTimeOffset(ipmt); |
367 | Int_t clock = kNClocks/2 - Int_t(tadc/25.0); | |
4e2652e8 | 368 | if (clock >= 0 && clock < kNClocks) |
369 | fAdc[ipmt][clock] += fTime[ipmt][iBin]/kChargePerADC; | |
370 | } | |
51980118 | 371 | Int_t board = AliVZEROCalibData::GetBoardNumber(ipmt); |
4e2652e8 | 372 | if (ltFound && ttFound) { |
373 | fTimeWidth[ipmt] = fCalibData->GetWidthResolution(board)* | |
374 | Float_t(Int_t(fTimeWidth[ipmt]/fCalibData->GetWidthResolution(board))); | |
375 | if (fTimeWidth[ipmt] < Float_t(kMinTDCWidth)*fCalibData->GetWidthResolution(board)) | |
376 | fTimeWidth[ipmt] = Float_t(kMinTDCWidth)*fCalibData->GetWidthResolution(board); | |
377 | if (fTimeWidth[ipmt] > Float_t(kMaxTDCWidth)*fCalibData->GetWidthResolution(board)) | |
378 | fTimeWidth[ipmt] = Float_t(kMaxTDCWidth)*fCalibData->GetWidthResolution(board); | |
379 | } | |
380 | } | |
b0d2c2d3 | 381 | |
4e2652e8 | 382 | Int_t evenOrOdd = gRandom->Integer(2); |
383 | for (Int_t j=0; j<64; ++j){ | |
384 | for (Int_t iClock = 0; iClock < kNClocks; ++iClock) { | |
385 | Int_t integrator = (iClock + evenOrOdd) % 2; | |
386 | fAdc[j][iClock] += gRandom->Gaus(fAdcPedestal[j][integrator], fAdcSigma[j][integrator]); | |
387 | } | |
388 | } | |
20277079 | 389 | |
4e2652e8 | 390 | // Now add digits to the digit Tree |
391 | ||
30c4ff64 | 392 | Short_t *chargeADC = new Short_t[kNClocks]; |
4e2652e8 | 393 | for (Int_t i=0; i<64; i++) { |
30c4ff64 | 394 | for (Int_t j = 0; j < kNClocks; ++j) { |
4e2652e8 | 395 | Int_t tempadc = Int_t(fAdc[i][j]); |
396 | if (tempadc > 1023) tempadc = 1023; | |
30c4ff64 | 397 | chargeADC[j] = tempadc; |
4e2652e8 | 398 | } |
b47d88ce | 399 | AddDigit(i, fLeadingTime[i], fTimeWidth[i], Bool_t((10+evenOrOdd)%2), chargeADC, labels[i]); |
4e2652e8 | 400 | } |
30c4ff64 | 401 | delete [] chargeADC; |
4e2652e8 | 402 | |
b0d2c2d3 | 403 | treeD->Fill(); |
404 | outLoader->WriteDigits("OVERWRITE"); | |
405 | outLoader->UnloadDigits(); | |
406 | ResetDigit(); | |
9e04c3b6 | 407 | } |
408 | ||
409 | //____________________________________________________________________________ | |
b47d88ce | 410 | void AliVZERODigitizer::AddDigit(Int_t PMnumber, Float_t time, Float_t width, Bool_t integrator, Short_t *chargeADC, Int_t *labels) |
9e04c3b6 | 411 | { |
412 | ||
413 | // Adds Digit | |
414 | ||
415 | TClonesArray &ldigits = *fDigits; | |
fad64858 | 416 | |
b47d88ce | 417 | new(ldigits[fNdigits++]) AliVZEROdigit(PMnumber,time,width,integrator,chargeADC,labels); |
fad64858 | 418 | |
9e04c3b6 | 419 | } |
420 | //____________________________________________________________________________ | |
421 | void AliVZERODigitizer::ResetDigit() | |
422 | { | |
fe0adf2a | 423 | |
9e04c3b6 | 424 | // Clears Digits |
fe0adf2a | 425 | |
9e04c3b6 | 426 | fNdigits = 0; |
b0d2c2d3 | 427 | if (fDigits) fDigits->Delete(); |
9e04c3b6 | 428 | } |
ce7090f5 | 429 | |
430 | //____________________________________________________________________________ | |
431 | AliVZEROCalibData* AliVZERODigitizer::GetCalibData() const | |
432 | ||
433 | { | |
c0b82b5a | 434 | AliCDBManager *man = AliCDBManager::Instance(); |
ce7090f5 | 435 | |
c0b82b5a | 436 | AliCDBEntry *entry=0; |
ce7090f5 | 437 | |
c0b82b5a | 438 | entry = man->Get("VZERO/Calib/Data"); |
439 | ||
df791951 | 440 | // if(!entry){ |
441 | // AliWarning("Load of calibration data from default storage failed!"); | |
442 | // AliWarning("Calibration data will be loaded from local storage ($ALICE_ROOT)"); | |
443 | // Int_t runNumber = man->GetRun(); | |
162637e4 | 444 | // entry = man->GetStorage("local://$ALICE_ROOT/OCDB") |
df791951 | 445 | // ->Get("VZERO/Calib/Data",runNumber); |
446 | // | |
447 | // } | |
c0b82b5a | 448 | |
449 | // Retrieval of data in directory VZERO/Calib/Data: | |
ce7090f5 | 450 | |
ce7090f5 | 451 | |
c0b82b5a | 452 | AliVZEROCalibData *calibdata = 0; |
ce7090f5 | 453 | |
c0b82b5a | 454 | if (entry) calibdata = (AliVZEROCalibData*) entry->GetObject(); |
df791951 | 455 | if (!calibdata) AliFatal("No calibration data from calibration database !"); |
ce7090f5 | 456 | |
c0b82b5a | 457 | return calibdata; |
ce7090f5 | 458 | |
459 | } | |
460 | ||
9672d66e | 461 | double AliVZERODigitizer::SignalShape(double *x, double *par) |
462 | { | |
4e2652e8 | 463 | // this function simulates the time |
464 | // of arrival of the photons at the | |
465 | // photocathode | |
9672d66e | 466 | Double_t xx = x[0]; |
467 | if (xx <= par[0]) return 0; | |
468 | Double_t a = 1./TMath::Power((xx-par[0])/par[1],1./par[2]); | |
469 | if (xx <= par[3]) return a; | |
470 | Double_t b = 1./TMath::Power((xx-par[3])/par[4],1./par[5]); | |
9672d66e | 471 | Double_t f = a*b/(a+b); |
472 | AliDebug(100,Form("x=%f func=%f",xx,f)); | |
473 | return f; | |
474 | } | |
4e2652e8 | 475 | |
476 | double AliVZERODigitizer::PMResponse(double *x, double * /* par */) | |
477 | { | |
478 | // this function describes the | |
479 | // PM time response to a single | |
480 | // photoelectron | |
481 | Double_t xx = x[0]+kPMRespTime; | |
482 | return xx*xx*TMath::Exp(-xx*xx/(kPMRespTime*kPMRespTime)); | |
483 | } | |
484 | ||
485 | double AliVZERODigitizer::SinglePhESpectrum(double *x, double * /* par */) | |
486 | { | |
487 | // this function describes the | |
488 | // PM amplitude response to a single | |
489 | // photoelectron | |
490 | Double_t xx = x[0]; | |
491 | if (xx < 0) return 0; | |
492 | return (TMath::Poisson(xx,kPMNbOfSecElec)+kPMTransparency*TMath::Poisson(xx,1.0)); | |
493 | } | |
494 | ||
495 | Int_t AliVZERODigitizer::Cell2Pmt(Int_t cell) const | |
496 | { | |
497 | // The method maps the scintillator | |
498 | // indexes to the PM ones | |
499 | if (cell < 0 || cell >= 80) { | |
500 | AliError(Form("Wrong VZERO cell index %d",cell)); | |
501 | return -1; | |
502 | } | |
503 | if (cell < 16) return cell; | |
504 | if (cell < 48) return 8 + cell/2; | |
505 | return cell - 16; | |
506 | } |