1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 /// class for VZERO reconstruction //
22 ///////////////////////////////////////////////////////////////////////////////
26 #include <TParameter.h>
28 #include "AliRunLoader.h"
29 #include "AliRawReader.h"
30 #include "AliGRPObject.h"
31 #include "AliCDBManager.h"
32 #include "AliCDBStorage.h"
33 #include "AliCDBEntry.h"
34 #include "AliVZEROReconstructor.h"
35 #include "AliVZERORawStream.h"
36 #include "AliVZEROConst.h"
37 #include "AliESDEvent.h"
38 #include "AliVZEROTriggerMask.h"
39 #include "AliESDfriend.h"
40 #include "AliESDVZEROfriend.h"
41 #include "AliVZEROdigit.h"
42 #include "AliVZEROCalibData.h"
43 #include "AliRunInfo.h"
44 #include "AliCTPTimeParams.h"
45 #include "AliLHCClockPhase.h"
47 ClassImp(AliVZEROReconstructor)
49 //_____________________________________________________________________________
50 AliVZEROReconstructor:: AliVZEROReconstructor(): AliReconstructor(),
60 // Default constructor
61 // Get calibration data
63 fCalibData = GetCalibData();
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;
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);
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();
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();
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();
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+
91 fCalibData->GetTimeOffset(i)-
93 phase->GetMeanPhase()+
94 delays->GetBinContent(i+1)+
100 //_____________________________________________________________________________
101 AliVZEROReconstructor& AliVZEROReconstructor::operator =
102 (const AliVZEROReconstructor& /*reconstructor*/)
104 // assignment operator
106 Fatal("operator =", "assignment operator not implemented");
110 //_____________________________________________________________________________
111 AliVZEROReconstructor::~AliVZEROReconstructor()
116 delete fESDVZEROfriend;
120 //_____________________________________________________________________________
121 void AliVZEROReconstructor::Init()
125 fESDVZERO = new AliESDVZERO;
126 fESDVZEROfriend = new AliESDVZEROfriend;
128 GetCollisionMode(); // fCollisionMode =1 for Pb-Pb simulated data
131 //______________________________________________________________________
132 void AliVZEROReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
134 // converts RAW to digits
137 AliError("No digits tree!");
142 fDigitsArray = new TClonesArray("AliVZEROdigit", 64);
143 digitsTree->Branch("VZERODigit", &fDigitsArray);
145 fESDVZEROfriend->Reset();
148 AliVZERORawStream rawStream(rawReader);
149 if (rawStream.Next()) {
151 Int_t aBBflagsV0A = 0;
152 Int_t aBBflagsV0C = 0;
153 Int_t aBGflagsV0A = 0;
154 Int_t aBGflagsV0C = 0;
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);
164 Bool_t integrator = rawStream.GetIntegratorFlag(iChannel,AliVZEROdigit::kNClocks/2);
165 // Beam-beam and beam-gas flags
167 if (rawStream.GetBBFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBBflagsV0C |= (1 << offlineCh);
168 if (rawStream.GetBGFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBGflagsV0C |= (1 << offlineCh);
170 if (rawStream.GetBBFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBBflagsV0A |= (1 << (offlineCh-32));
171 if (rawStream.GetBGFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBGflagsV0A |= (1 << (offlineCh-32));
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);
178 if(!fCalibData->IsChannelDead(iChannel)){
179 new ((*fDigitsArray)[fDigitsArray->GetEntriesFast()])
180 AliVZEROdigit(offlineCh, time,
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));
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());
201 for(Int_t iScaler = 0; iScaler < AliESDVZEROfriend::kNScalers; iScaler++)
202 fESDVZEROfriend->SetTriggerScalers(iScaler,rawStream.GetTriggerScalers(iScaler));
204 for(Int_t iBunch = 0; iBunch < AliESDVZEROfriend::kNBunches; iBunch++)
205 fESDVZEROfriend->SetBunchNumbersMB(iBunch,rawStream.GetBunchNumbersMB(iBunch));
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));
216 fDigitsArray->Clear();
219 //______________________________________________________________________
220 void AliVZEROReconstructor::FillESD(TTree* digitsTree, TTree* /*clustersTree*/,
221 AliESDEvent* esd) const
223 // fills multiplicities to the ESD - pedestal is now subtracted
226 AliError("No digits tree!");
230 TBranch* digitBranch = digitsTree->GetBranch("VZERODigit");
231 digitBranch->SetAddress(&fDigitsArray);
240 for (Int_t i=0; i<64; i++){
243 time[i] = kInvalidTime;
249 Int_t aBBflagsV0A = 0;
250 Int_t aBBflagsV0C = 0;
251 Int_t aBGflagsV0A = 0;
252 Int_t aBGflagsV0C = 0;
254 if (digitsTree->GetUserInfo()->FindObject("BBflagsV0A")) {
255 aBBflagsV0A = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BBflagsV0A"))->GetVal();
258 AliWarning("V0A beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
260 if (digitsTree->GetUserInfo()->FindObject("BBflagsV0C")) {
261 aBBflagsV0C = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BBflagsV0C"))->GetVal();
264 AliWarning("V0C beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
266 if (digitsTree->GetUserInfo()->FindObject("BGflagsV0A")) {
267 aBGflagsV0A = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BGflagsV0A"))->GetVal();
270 AliWarning("V0A beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
272 if (digitsTree->GetUserInfo()->FindObject("BGflagsV0C")) {
273 aBGflagsV0C = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BGflagsV0C"))->GetVal();
276 AliWarning("V0C beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
278 // Beam-beam and beam-gas flags (hardware)
279 for (Int_t iChannel = 0; iChannel < 64; ++iChannel) {
281 aBBflag[iChannel] = (aBBflagsV0C >> iChannel) & 0x1;
282 aBGflag[iChannel] = (aBGflagsV0C >> iChannel) & 0x1;
285 aBBflag[iChannel] = (aBBflagsV0A >> (iChannel-32)) & 0x1;
286 aBGflag[iChannel] = (aBGflagsV0A >> (iChannel-32)) & 0x1;
290 Int_t nEntries = (Int_t)digitsTree->GetEntries();
291 for (Int_t e=0; e<nEntries; e++) {
292 digitsTree->GetEvent(e);
294 Int_t nDigits = fDigitsArray->GetEntriesFast();
296 for (Int_t d=0; d<nDigits; d++) {
297 AliVZEROdigit* digit = (AliVZEROdigit*) fDigitsArray->At(d);
298 Int_t pmNumber = digit->PMNumber();
300 // Pedestal retrieval and suppression
301 Bool_t integrator = digit->Integrator();
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;
314 if(iClock < GetRecoParam()->GetStartClock() || iClock > GetRecoParam()->GetEndClock()) continue;
315 if(adcPedSub[iClock] > maxadc) {
316 maxadc = adcPedSub[iClock];
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];
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();
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],
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]));
345 mult[pmNumber] = adc[pmNumber]*fCalibData->GetMIPperADC(pmNumber);
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]);
354 fESDVZEROfriend->SetTime(pmNumber,digit->Time());
355 fESDVZEROfriend->SetWidth(pmNumber,digit->Width());
357 } // end of loop over digits
358 } // end of loop over events in digits tree
360 fESDVZERO->SetBit(AliESDVZERO::kCorrectedLeadingTime,kTRUE);
361 fESDVZERO->SetMultiplicity(mult);
362 fESDVZERO->SetADC(adc);
363 fESDVZERO->SetTime(time);
364 fESDVZERO->SetWidth(width);
365 fESDVZERO->SetBit(AliESDVZERO::kOnlineBitsFilled,kTRUE);
366 fESDVZERO->SetBBFlag(aBBflag);
367 fESDVZERO->SetBGFlag(aBGflag);
369 // now fill the V0 decision and channel flags
371 AliVZEROTriggerMask triggerMask;
372 triggerMask.FillMasks(fESDVZERO, fCalibData, fTimeSlewing);
376 AliDebug(1, Form("Writing VZERO data to ESD tree"));
377 esd->SetVZEROData(fESDVZERO);
381 AliESDfriend *fr = (AliESDfriend*)esd->FindListObject("AliESDfriend");
383 AliDebug(1, Form("Writing VZERO friend data to ESD tree"));
384 fr->SetVZEROfriend(fESDVZEROfriend);
388 fDigitsArray->Clear();
391 //_____________________________________________________________________________
392 AliCDBStorage* AliVZEROReconstructor::SetStorage(const char *uri)
396 Bool_t deleteManager = kFALSE;
398 AliCDBManager *manager = AliCDBManager::Instance();
399 AliCDBStorage *defstorage = manager->GetDefaultStorage();
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;
407 AliCDBStorage *storage = manager->GetDefaultStorage();
410 AliCDBManager::Instance()->UnsetDefaultStorage();
411 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
417 //____________________________________________________________________________
418 void AliVZEROReconstructor::GetCollisionMode()
420 // Retrieval of collision mode
422 TString beamType = GetRunInfo()->GetBeamType();
423 if(beamType==AliGRPObject::GetInvalidString()){
424 AliError("VZERO cannot retrieve beam type");
428 if( (beamType.CompareTo("P-P") ==0) || (beamType.CompareTo("p-p") ==0) ){
431 else if( (beamType.CompareTo("Pb-Pb") ==0) || (beamType.CompareTo("A-A") ==0) ){
435 fBeamEnergy = GetRunInfo()->GetBeamEnergy();
436 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()) {
437 AliError("Missing value for the beam energy ! Using 0");
441 AliDebug(1,Form("\n ++++++ Beam type and collision mode retrieved as %s %d @ %1.3f GeV ++++++\n\n",beamType.Data(), fCollisionMode, fBeamEnergy));
445 //_____________________________________________________________________________
446 AliVZEROCalibData* AliVZEROReconstructor::GetCalibData() const
448 // Gets calibration object for VZERO set
450 AliCDBManager *man = AliCDBManager::Instance();
452 AliCDBEntry *entry=0;
454 entry = man->Get("VZERO/Calib/Data");
456 AliVZEROCalibData *calibdata = 0;
458 if (entry) calibdata = (AliVZEROCalibData*) entry->GetObject();
459 if (!calibdata) AliFatal("No calibration data from calibration database !");
464 Float_t AliVZEROReconstructor::CorrectLeadingTime(Int_t i, Float_t time, Float_t adc) const
466 // Correct the leading time
467 // for slewing effect and
468 // misalignment of the channels
469 if (time < 1e-6) return kInvalidTime;
471 // Channel alignment and general offset subtraction
472 if (i < 32) time -= kV0CDelayCables;
473 time -= fTimeOffset[i];
475 // In case of pathological signals
476 if (adc < 1e-6) return time;
478 // Slewing correction
479 Float_t thr = fCalibData->GetDiscriThr(i);
480 time -= fTimeSlewing->Eval(adc/thr);