Reverting the previous mods as they cause a segmentation violation
[u/mrichter/AliRoot.git] / VZERO / AliVZEROReconstructor.cxx
CommitLineData
b0d2c2d3 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///////////////////////////////////////////////////////////////////////////////
19/// //
20/// class for VZERO reconstruction //
21/// //
22///////////////////////////////////////////////////////////////////////////////
23
b44c933e 24#include <TH1F.h>
25#include <TF1.h>
b6fd9c4a 26#include <TParameter.h>
b44c933e 27
35b120ff 28#include "AliRunLoader.h"
2eb38194 29#include "AliRawReader.h"
fe0adf2a 30#include "AliGRPObject.h"
31#include "AliCDBManager.h"
32#include "AliCDBStorage.h"
33#include "AliCDBEntry.h"
b0d2c2d3 34#include "AliVZEROReconstructor.h"
2eb38194 35#include "AliVZERORawStream.h"
b44c933e 36#include "AliVZEROConst.h"
b14e6eb4 37#include "AliESDEvent.h"
a055ee24 38#include "AliVZEROTriggerMask.h"
b090e6a3 39#include "AliESDfriend.h"
40#include "AliESDVZEROfriend.h"
fad64858 41#include "AliVZEROdigit.h"
e58b4e66 42#include "AliVZEROCalibData.h"
75b6bc77 43#include "AliRunInfo.h"
b44c933e 44#include "AliCTPTimeParams.h"
30d5d647 45#include "AliLHCClockPhase.h"
b0d2c2d3 46
b0d2c2d3 47ClassImp(AliVZEROReconstructor)
48
ce7090f5 49//_____________________________________________________________________________
cb2228e6 50AliVZEROReconstructor:: AliVZEROReconstructor(): AliReconstructor(),
fe0adf2a 51 fESDVZERO(0x0),
52 fESD(0x0),
53 fESDVZEROfriend(0x0),
b44c933e 54 fCalibData(NULL),
55 fTimeSlewing(NULL),
fe0adf2a 56 fCollisionMode(0),
dbf24214 57 fBeamEnergy(0.),
58 fDigitsArray(0)
ce7090f5 59{
60 // Default constructor
ce7090f5 61 // Get calibration data
62
b44c933e 63 fCalibData = GetCalibData();
64
65 AliCDBEntry *entry = AliCDBManager::Instance()->Get("GRP/CTP/CTPtiming");
66 if (!entry) AliFatal("CTP timing parameters are not found in OCDB !");
67 AliCTPTimeParams *ctpParams = (AliCTPTimeParams*)entry->GetObject();
68 Float_t l1Delay = (Float_t)ctpParams->GetDelayL1L0()*25.0;
69
7905581c 70 AliCDBEntry *entry1 = AliCDBManager::Instance()->Get("GRP/CTP/TimeAlign");
71 if (!entry1) AliFatal("CTP time-alignment is not found in OCDB !");
72 AliCTPTimeParams *ctpTimeAlign = (AliCTPTimeParams*)entry1->GetObject();
73 l1Delay += ((Float_t)ctpTimeAlign->GetDelayL1L0()*25.0);
74
b44c933e 75 AliCDBEntry *entry2 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeDelays");
76 if (!entry2) AliFatal("VZERO time delays are not found in OCDB !");
77 TH1F *delays = (TH1F*)entry2->GetObject();
78
79 AliCDBEntry *entry3 = AliCDBManager::Instance()->Get("VZERO/Calib/TimeSlewing");
80 if (!entry3) AliFatal("VZERO time slewing function is not found in OCDB !");
81 fTimeSlewing = (TF1*)entry3->GetObject();
82
30d5d647 83 AliCDBEntry *entry4 = AliCDBManager::Instance()->Get("GRP/Calib/LHCClockPhase");
84 if (!entry4) AliFatal("LHC clock-phase shift is not found in OCDB !");
85 AliLHCClockPhase *phase = (AliLHCClockPhase*)entry4->GetObject();
86
b44c933e 87 for(Int_t i = 0 ; i < 64; ++i) {
88 Int_t board = AliVZEROCalibData::GetBoardNumber(i);
89 fTimeOffset[i] = (((Float_t)fCalibData->GetTriggerCountOffset(board)-
90 (Float_t)fCalibData->GetRollOver(board))*25.0+
7905581c 91 fCalibData->GetTimeOffset(i)-
30d5d647 92 l1Delay-
93 phase->GetMeanPhase()+
b44c933e 94 delays->GetBinContent(i+1)+
95 kV0Offset);
96 }
ce7090f5 97}
98
99
100//_____________________________________________________________________________
101AliVZEROReconstructor& AliVZEROReconstructor::operator =
102 (const AliVZEROReconstructor& /*reconstructor*/)
103{
104// assignment operator
105
106 Fatal("operator =", "assignment operator not implemented");
107 return *this;
108}
109
110//_____________________________________________________________________________
111AliVZEROReconstructor::~AliVZEROReconstructor()
112{
113// destructor
44b6212f 114
b090e6a3 115 delete fESDVZERO;
116 delete fESDVZEROfriend;
dbf24214 117 delete fDigitsArray;
35b120ff 118}
119
120//_____________________________________________________________________________
d76c31f4 121void AliVZEROReconstructor::Init()
35b120ff 122{
ef314913 123// initializer
ce7090f5 124
35b120ff 125 fESDVZERO = new AliESDVZERO;
b090e6a3 126 fESDVZEROfriend = new AliESDVZEROfriend;
fe0adf2a 127
128 GetCollisionMode(); // fCollisionMode =1 for Pb-Pb simulated data
35b120ff 129}
130
131//______________________________________________________________________
2e0ee64a 132void AliVZEROReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
35b120ff 133{
75b6bc77 134// converts RAW to digits
ef314913 135
2e0ee64a 136 if (!digitsTree) {
137 AliError("No digits tree!");
138 return;
139 }
35b120ff 140
dbf24214 141 if (!fDigitsArray)
142 fDigitsArray = new TClonesArray("AliVZEROdigit", 64);
143 digitsTree->Branch("VZERODigit", &fDigitsArray);
2e0ee64a 144
b090e6a3 145 fESDVZEROfriend->Reset();
146
2e0ee64a 147 rawReader->Reset();
148 AliVZERORawStream rawStream(rawReader);
75b6bc77 149 if (rawStream.Next()) {
1d51e5e5 150
151 Int_t aBBflagsV0A = 0;
152 Int_t aBBflagsV0C = 0;
153 Int_t aBGflagsV0A = 0;
154 Int_t aBGflagsV0C = 0;
155
156 for(Int_t iChannel=0; iChannel < 64; ++iChannel) {
157 Int_t offlineCh = rawStream.GetOfflineChannel(iChannel);
158 // ADC charge samples
159 Short_t chargeADC[AliVZEROdigit::kNClocks];
160 for(Int_t iClock=0; iClock < AliVZEROdigit::kNClocks; ++iClock) {
161 chargeADC[iClock] = rawStream.GetPedestal(iChannel,iClock);
162 }
163 // Integrator flag
164 Bool_t integrator = rawStream.GetIntegratorFlag(iChannel,AliVZEROdigit::kNClocks/2);
165 // Beam-beam and beam-gas flags
166 if(offlineCh<32) {
167 if (rawStream.GetBBFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBBflagsV0C |= (1 << offlineCh);
168 if (rawStream.GetBGFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBGflagsV0C |= (1 << offlineCh);
169 } else {
170 if (rawStream.GetBBFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBBflagsV0A |= (1 << (offlineCh-32));
171 if (rawStream.GetBGFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBGflagsV0A |= (1 << (offlineCh-32));
172 }
173 // HPTDC data (leading time and width)
174 Int_t board = AliVZEROCalibData::GetBoardNumber(offlineCh);
175 Float_t time = rawStream.GetTime(iChannel)*fCalibData->GetTimeResolution(board);
176 Float_t width = rawStream.GetWidth(iChannel)*fCalibData->GetWidthResolution(board);
177 // Add a digit
178 if(!fCalibData->IsChannelDead(iChannel)){
179 new ((*fDigitsArray)[fDigitsArray->GetEntriesFast()])
b47d88ce 180 AliVZEROdigit(offlineCh, time,
1d51e5e5 181 width,integrator,
182 chargeADC);
183 }
184
185 // Filling the part of esd friend object that is available only for raw data
186 fESDVZEROfriend->SetBBScalers(offlineCh,rawStream.GetBBScalers(iChannel));
187 fESDVZEROfriend->SetBGScalers(offlineCh,rawStream.GetBGScalers(iChannel));
188 for (Int_t iBunch = 0; iBunch < AliESDVZEROfriend::kNBunches; iBunch++) {
189 fESDVZEROfriend->SetChargeMB(offlineCh,iBunch,rawStream.GetChargeMB(iChannel,iBunch));
190 fESDVZEROfriend->SetIntMBFlag(offlineCh,iBunch,rawStream.GetIntMBFlag(iChannel,iBunch));
191 fESDVZEROfriend->SetBBMBFlag(offlineCh,iBunch,rawStream.GetBBMBFlag(iChannel,iBunch));
192 fESDVZEROfriend->SetBGMBFlag(offlineCh,iBunch,rawStream.GetBGMBFlag(iChannel,iBunch));
193 }
194
195 }
196
197 // Filling the global part of esd friend object that is available only for raw data
198 fESDVZEROfriend->SetTriggerInputs(rawStream.GetTriggerInputs());
199 fESDVZEROfriend->SetTriggerInputsMask(rawStream.GetTriggerInputsMask());
200
201 for(Int_t iScaler = 0; iScaler < AliESDVZEROfriend::kNScalers; iScaler++)
202 fESDVZEROfriend->SetTriggerScalers(iScaler,rawStream.GetTriggerScalers(iScaler));
203
204 for(Int_t iBunch = 0; iBunch < AliESDVZEROfriend::kNBunches; iBunch++)
205 fESDVZEROfriend->SetBunchNumbersMB(iBunch,rawStream.GetBunchNumbersMB(iBunch));
b090e6a3 206
1d51e5e5 207 // Store the BB and BG flags in the digits tree (user info)
208 digitsTree->GetUserInfo()->Add(new TParameter<int>("BBflagsV0A",aBBflagsV0A));
209 digitsTree->GetUserInfo()->Add(new TParameter<int>("BBflagsV0C",aBBflagsV0C));
210 digitsTree->GetUserInfo()->Add(new TParameter<int>("BGflagsV0A",aBGflagsV0A));
211 digitsTree->GetUserInfo()->Add(new TParameter<int>("BGflagsV0C",aBGflagsV0C));
b090e6a3 212
1d51e5e5 213 digitsTree->Fill();
2e0ee64a 214 }
dbf24214 215
216 fDigitsArray->Clear();
1d51e5e5 217}
2e0ee64a 218
219//______________________________________________________________________
220void AliVZEROReconstructor::FillESD(TTree* digitsTree, TTree* /*clustersTree*/,
b14e6eb4 221 AliESDEvent* esd) const
2e0ee64a 222{
75b6bc77 223// fills multiplicities to the ESD - pedestal is now subtracted
fe0adf2a 224
2e0ee64a 225 if (!digitsTree) {
fe0adf2a 226 AliError("No digits tree!");
227 return;
2e0ee64a 228 }
a055ee24 229
2e0ee64a 230 TBranch* digitBranch = digitsTree->GetBranch("VZERODigit");
dbf24214 231 digitBranch->SetAddress(&fDigitsArray);
35b120ff 232
44b6212f 233 Float_t mult[64];
db0db003 234 Float_t adc[64];
235 Float_t time[64];
236 Float_t width[64];
b6fd9c4a 237 Bool_t aBBflag[64];
238 Bool_t aBGflag[64];
d0502ab2 239
35b120ff 240 for (Int_t i=0; i<64; i++){
db0db003 241 adc[i] = 0.0;
d0502ab2 242 mult[i] = 0.0;
b44c933e 243 time[i] = kInvalidTime;
db0db003 244 width[i] = 0.0;
b6fd9c4a 245 aBBflag[i] = kFALSE;
246 aBGflag[i] = kFALSE;
a055ee24 247 }
35b120ff 248
b6fd9c4a 249 Int_t aBBflagsV0A = 0;
250 Int_t aBBflagsV0C = 0;
251 Int_t aBGflagsV0A = 0;
252 Int_t aBGflagsV0C = 0;
253
254 if (digitsTree->GetUserInfo()->FindObject("BBflagsV0A")) {
255 aBBflagsV0A = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BBflagsV0A"))->GetVal();
256 }
257 else
258 AliWarning("V0A beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
259
260 if (digitsTree->GetUserInfo()->FindObject("BBflagsV0C")) {
261 aBBflagsV0C = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BBflagsV0C"))->GetVal();
262 }
263 else
264 AliWarning("V0C beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
265
266 if (digitsTree->GetUserInfo()->FindObject("BGflagsV0A")) {
267 aBGflagsV0A = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BGflagsV0A"))->GetVal();
268 }
269 else
270 AliWarning("V0A beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
271
272 if (digitsTree->GetUserInfo()->FindObject("BGflagsV0C")) {
273 aBGflagsV0C = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BGflagsV0C"))->GetVal();
274 }
275 else
276 AliWarning("V0C beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
277
1d51e5e5 278 // Beam-beam and beam-gas flags (hardware)
279 for (Int_t iChannel = 0; iChannel < 64; ++iChannel) {
280 if(iChannel < 32) {
281 aBBflag[iChannel] = (aBBflagsV0C >> iChannel) & 0x1;
282 aBGflag[iChannel] = (aBGflagsV0C >> iChannel) & 0x1;
283 }
284 else {
285 aBBflag[iChannel] = (aBBflagsV0A >> (iChannel-32)) & 0x1;
286 aBGflag[iChannel] = (aBGflagsV0A >> (iChannel-32)) & 0x1;
287 }
288 }
b6fd9c4a 289
2e0ee64a 290 Int_t nEntries = (Int_t)digitsTree->GetEntries();
35b120ff 291 for (Int_t e=0; e<nEntries; e++) {
2e0ee64a 292 digitsTree->GetEvent(e);
35b120ff 293
dbf24214 294 Int_t nDigits = fDigitsArray->GetEntriesFast();
35b120ff 295
296 for (Int_t d=0; d<nDigits; d++) {
dbf24214 297 AliVZEROdigit* digit = (AliVZEROdigit*) fDigitsArray->At(d);
1d51e5e5 298 Int_t pmNumber = digit->PMNumber();
299
300 // Pedestal retrieval and suppression
301 Bool_t integrator = digit->Integrator();
302 Float_t maxadc = 0;
303 Int_t imax = -1;
304 Float_t adcPedSub[AliVZEROdigit::kNClocks];
305 for(Int_t iClock=0; iClock < AliVZEROdigit::kNClocks; ++iClock) {
306 Short_t charge = digit->ChargeADC(iClock);
307 Bool_t iIntegrator = (iClock%2 == 0) ? integrator : !integrator;
308 Int_t k = pmNumber + 64*iIntegrator;
309 adcPedSub[iClock] = (Float_t)charge - fCalibData->GetPedestal(k);
310 if(adcPedSub[iClock] <= GetRecoParam()->GetNSigmaPed()*fCalibData->GetSigma(k)) {
311 adcPedSub[iClock] = 0;
312 continue;
313 }
314 if(iClock < GetRecoParam()->GetStartClock() || iClock > GetRecoParam()->GetEndClock()) continue;
315 if(adcPedSub[iClock] > maxadc) {
316 maxadc = adcPedSub[iClock];
317 imax = iClock;
318 }
b6fd9c4a 319 }
1d51e5e5 320
321 if (imax != -1) {
322 Int_t start = imax - GetRecoParam()->GetNPreClocks();
323 if (start < 0) start = 0;
324 Int_t end = imax + GetRecoParam()->GetNPostClocks();
325 if (end > 20) end = 20;
326 for(Int_t iClock = start; iClock <= end; iClock++) {
327 adc[pmNumber] += adcPedSub[iClock];
328 }
b6fd9c4a 329 }
330
1d51e5e5 331 // HPTDC leading time and width
332 // Correction for slewing and various time delays
333 time[pmNumber] = CorrectLeadingTime(pmNumber,digit->Time(),adc[pmNumber]);
334 width[pmNumber] = digit->Width();
335
336 if (adc[pmNumber] > 0) AliDebug(1,Form("PM = %d ADC = %f TDC %f (%f) Int %d (%d %d %d %d %d) %f %f %f %f %d %d",pmNumber, adc[pmNumber],
337 digit->Time(),time[pmNumber],
b6fd9c4a 338 integrator,
339 digit->ChargeADC(8),digit->ChargeADC(9),digit->ChargeADC(10),
340 digit->ChargeADC(11),digit->ChargeADC(12),
341 fCalibData->GetPedestal(pmNumber),fCalibData->GetSigma(pmNumber),
342 fCalibData->GetPedestal(pmNumber+64),fCalibData->GetSigma(pmNumber+64),
343 aBBflag[pmNumber],aBGflag[pmNumber]));
75b6bc77 344
1d51e5e5 345 mult[pmNumber] = adc[pmNumber]*fCalibData->GetMIPperADC(pmNumber);
346
347 // Fill ESD friend object
348 for (Int_t iEv = 0; iEv < AliESDVZEROfriend::kNEvOfInt; iEv++) {
349 fESDVZEROfriend->SetPedestal(pmNumber,iEv,(Float_t)digit->ChargeADC(iEv));
350 fESDVZEROfriend->SetIntegratorFlag(pmNumber,iEv,(iEv%2 == 0) ? integrator : !integrator);
351 fESDVZEROfriend->SetBBFlag(pmNumber,iEv,aBBflag[pmNumber]);
352 fESDVZEROfriend->SetBGFlag(pmNumber,iEv,aBGflag[pmNumber]);
353 }
354 fESDVZEROfriend->SetTime(pmNumber,digit->Time());
355 fESDVZEROfriend->SetWidth(pmNumber,digit->Width());
356
35b120ff 357 } // end of loop over digits
35b120ff 358 } // end of loop over events in digits tree
6c6d6114 359
b44c933e 360 fESDVZERO->SetBit(AliESDVZERO::kCorrectedLeadingTime,kTRUE);
6c6d6114 361 fESDVZERO->SetMultiplicity(mult);
28fdf12c 362 fESDVZERO->SetADC(adc);
363 fESDVZERO->SetTime(time);
d0502ab2 364 fESDVZERO->SetWidth(width);
89a39339 365 fESDVZERO->SetBit(AliESDVZERO::kOnlineBitsFilled,kTRUE);
b6fd9c4a 366 fESDVZERO->SetBBFlag(aBBflag);
367 fESDVZERO->SetBGFlag(aBGflag);
a055ee24 368
b44c933e 369 // now fill the V0 decision and channel flags
370 {
371 AliVZEROTriggerMask triggerMask;
372 triggerMask.FillMasks(fESDVZERO, fCalibData, fTimeSlewing);
373 }
a055ee24 374
2e0ee64a 375 if (esd) {
44b6212f 376 AliDebug(1, Form("Writing VZERO data to ESD tree"));
377 esd->SetVZEROData(fESDVZERO);
2e0ee64a 378 }
b090e6a3 379
380 if (esd) {
fe0adf2a 381 AliESDfriend *fr = (AliESDfriend*)esd->FindListObject("AliESDfriend");
382 if (fr) {
383 AliDebug(1, Form("Writing VZERO friend data to ESD tree"));
384 fr->SetVZEROfriend(fESDVZEROfriend);
b090e6a3 385 }
386 }
dbf24214 387
388 fDigitsArray->Clear();
35b120ff 389}
390
ce7090f5 391//_____________________________________________________________________________
392AliCDBStorage* AliVZEROReconstructor::SetStorage(const char *uri)
393{
ef314913 394// Sets the storage
395
ce7090f5 396 Bool_t deleteManager = kFALSE;
397
398 AliCDBManager *manager = AliCDBManager::Instance();
399 AliCDBStorage *defstorage = manager->GetDefaultStorage();
400
401 if(!defstorage || !(defstorage->Contains("VZERO"))){
402 AliWarning("No default storage set or default storage doesn't contain VZERO!");
403 manager->SetDefaultStorage(uri);
404 deleteManager = kTRUE;
405 }
406
407 AliCDBStorage *storage = manager->GetDefaultStorage();
408
409 if(deleteManager){
44b6212f 410 AliCDBManager::Instance()->UnsetDefaultStorage();
411 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
ce7090f5 412 }
413
414 return storage;
415}
416
fe0adf2a 417//____________________________________________________________________________
418void AliVZEROReconstructor::GetCollisionMode()
419{
75b6bc77 420 // Retrieval of collision mode
fe0adf2a 421
75b6bc77 422 TString beamType = GetRunInfo()->GetBeamType();
fe0adf2a 423 if(beamType==AliGRPObject::GetInvalidString()){
75b6bc77 424 AliError("VZERO cannot retrieve beam type");
fe0adf2a 425 return;
426 }
427
75b6bc77 428 if( (beamType.CompareTo("P-P") ==0) || (beamType.CompareTo("p-p") ==0) ){
429 fCollisionMode=0;
430 }
431 else if( (beamType.CompareTo("Pb-Pb") ==0) || (beamType.CompareTo("A-A") ==0) ){
432 fCollisionMode=1;
fe0adf2a 433 }
fe0adf2a 434
75b6bc77 435 fBeamEnergy = GetRunInfo()->GetBeamEnergy();
fe0adf2a 436 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()) {
75b6bc77 437 AliError("Missing value for the beam energy ! Using 0");
fe0adf2a 438 fBeamEnergy = 0.;
439 }
440
75b6bc77 441 AliDebug(1,Form("\n ++++++ Beam type and collision mode retrieved as %s %d @ %1.3f GeV ++++++\n\n",beamType.Data(), fCollisionMode, fBeamEnergy));
fe0adf2a 442
443}
444
ce7090f5 445//_____________________________________________________________________________
446AliVZEROCalibData* AliVZEROReconstructor::GetCalibData() const
447{
ef314913 448 // Gets calibration object for VZERO set
ce7090f5 449
c0b82b5a 450 AliCDBManager *man = AliCDBManager::Instance();
ce7090f5 451
c0b82b5a 452 AliCDBEntry *entry=0;
453
454 entry = man->Get("VZERO/Calib/Data");
455
c0b82b5a 456 AliVZEROCalibData *calibdata = 0;
457
458 if (entry) calibdata = (AliVZEROCalibData*) entry->GetObject();
94a600a1 459 if (!calibdata) AliFatal("No calibration data from calibration database !");
ce7090f5 460
461 return calibdata;
462}
44b6212f 463
b44c933e 464Float_t AliVZEROReconstructor::CorrectLeadingTime(Int_t i, Float_t time, Float_t adc) const
465{
466 // Correct the leading time
467 // for slewing effect and
468 // misalignment of the channels
469 if (time < 1e-6) return kInvalidTime;
470
471 // Channel alignment and general offset subtraction
472 if (i < 32) time -= kV0CDelayCables;
473 time -= fTimeOffset[i];
474
475 // In case of pathological signals
476 if (adc < 1e-6) return time;
477
478 // Slewing correction
479 Float_t thr = fCalibData->GetDiscriThr(i);
480 time -= fTimeSlewing->Eval(adc/thr);
481
482 return time;
483}