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()
118 delete fESDVZEROfriend;
123 //_____________________________________________________________________________
124 void AliVZEROReconstructor::Init()
128 fESDVZERO = new AliESDVZERO;
129 fESDVZEROfriend = new AliESDVZEROfriend;
131 GetCollisionMode(); // fCollisionMode =1 for Pb-Pb simulated data
134 //______________________________________________________________________
135 void AliVZEROReconstructor::ConvertDigits(AliRawReader* rawReader, TTree* digitsTree) const
137 // converts RAW to digits
140 AliError("No digits tree!");
145 fDigitsArray = new TClonesArray("AliVZEROdigit", 64);
146 digitsTree->Branch("VZERODigit", &fDigitsArray);
148 fESDVZEROfriend->Reset();
151 AliVZERORawStream rawStream(rawReader);
152 if (rawStream.Next()) {
154 Int_t aBBflagsV0A = 0;
155 Int_t aBBflagsV0C = 0;
156 Int_t aBGflagsV0A = 0;
157 Int_t aBGflagsV0C = 0;
159 for(Int_t iChannel=0; iChannel < 64; ++iChannel) {
160 Int_t offlineCh = rawStream.GetOfflineChannel(iChannel);
161 // ADC charge samples
162 Short_t chargeADC[AliVZEROdigit::kNClocks];
163 for(Int_t iClock=0; iClock < AliVZEROdigit::kNClocks; ++iClock) {
164 chargeADC[iClock] = rawStream.GetPedestal(iChannel,iClock);
167 Bool_t integrator = rawStream.GetIntegratorFlag(iChannel,AliVZEROdigit::kNClocks/2);
168 // Beam-beam and beam-gas flags
170 if (rawStream.GetBBFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBBflagsV0C |= (1 << offlineCh);
171 if (rawStream.GetBGFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBGflagsV0C |= (1 << offlineCh);
173 if (rawStream.GetBBFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBBflagsV0A |= (1 << (offlineCh-32));
174 if (rawStream.GetBGFlag(iChannel,AliVZEROdigit::kNClocks/2)) aBGflagsV0A |= (1 << (offlineCh-32));
176 // HPTDC data (leading time and width)
177 Int_t board = AliVZEROCalibData::GetBoardNumber(offlineCh);
178 Float_t time = rawStream.GetTime(iChannel)*fCalibData->GetTimeResolution(board);
179 Float_t width = rawStream.GetWidth(iChannel)*fCalibData->GetWidthResolution(board);
181 if(!fCalibData->IsChannelDead(iChannel)){
182 new ((*fDigitsArray)[fDigitsArray->GetEntriesFast()])
183 AliVZEROdigit(offlineCh, time,
188 // Filling the part of esd friend object that is available only for raw data
189 fESDVZEROfriend->SetBBScalers(offlineCh,rawStream.GetBBScalers(iChannel));
190 fESDVZEROfriend->SetBGScalers(offlineCh,rawStream.GetBGScalers(iChannel));
191 for (Int_t iBunch = 0; iBunch < AliESDVZEROfriend::kNBunches; iBunch++) {
192 fESDVZEROfriend->SetChargeMB(offlineCh,iBunch,rawStream.GetChargeMB(iChannel,iBunch));
193 fESDVZEROfriend->SetIntMBFlag(offlineCh,iBunch,rawStream.GetIntMBFlag(iChannel,iBunch));
194 fESDVZEROfriend->SetBBMBFlag(offlineCh,iBunch,rawStream.GetBBMBFlag(iChannel,iBunch));
195 fESDVZEROfriend->SetBGMBFlag(offlineCh,iBunch,rawStream.GetBGMBFlag(iChannel,iBunch));
197 for (Int_t iEv = 0; iEv < AliESDVZEROfriend::kNEvOfInt; iEv++) {
198 fESDVZEROfriend->SetBBFlag(offlineCh,iEv,rawStream.GetBBFlag(iChannel,iEv));
199 fESDVZEROfriend->SetBGFlag(offlineCh,iEv,rawStream.GetBGFlag(iChannel,iEv));
203 // Filling the global part of esd friend object that is available only for raw data
204 fESDVZEROfriend->SetTriggerInputs(rawStream.GetTriggerInputs());
205 fESDVZEROfriend->SetTriggerInputsMask(rawStream.GetTriggerInputsMask());
207 for(Int_t iScaler = 0; iScaler < AliESDVZEROfriend::kNScalers; iScaler++)
208 fESDVZEROfriend->SetTriggerScalers(iScaler,rawStream.GetTriggerScalers(iScaler));
210 for(Int_t iBunch = 0; iBunch < AliESDVZEROfriend::kNBunches; iBunch++)
211 fESDVZEROfriend->SetBunchNumbersMB(iBunch,rawStream.GetBunchNumbersMB(iBunch));
213 // Store the BB and BG flags in the digits tree (user info)
214 digitsTree->GetUserInfo()->Add(new TParameter<int>("BBflagsV0A",aBBflagsV0A));
215 digitsTree->GetUserInfo()->Add(new TParameter<int>("BBflagsV0C",aBBflagsV0C));
216 digitsTree->GetUserInfo()->Add(new TParameter<int>("BGflagsV0A",aBGflagsV0A));
217 digitsTree->GetUserInfo()->Add(new TParameter<int>("BGflagsV0C",aBGflagsV0C));
222 fDigitsArray->Clear();
225 //______________________________________________________________________
226 void AliVZEROReconstructor::FillESD(TTree* digitsTree, TTree* /*clustersTree*/,
227 AliESDEvent* esd) const
229 // fills multiplicities to the ESD - pedestal is now subtracted
232 AliError("No digits tree!");
236 TBranch* digitBranch = digitsTree->GetBranch("VZERODigit");
237 digitBranch->SetAddress(&fDigitsArray);
246 for (Int_t i=0; i<64; i++){
249 time[i] = kInvalidTime;
255 Int_t aBBflagsV0A = 0;
256 Int_t aBBflagsV0C = 0;
257 Int_t aBGflagsV0A = 0;
258 Int_t aBGflagsV0C = 0;
260 if (digitsTree->GetUserInfo()->FindObject("BBflagsV0A")) {
261 aBBflagsV0A = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BBflagsV0A"))->GetVal();
264 AliWarning("V0A 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("BBflagsV0C")) {
267 aBBflagsV0C = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BBflagsV0C"))->GetVal();
270 AliWarning("V0C beam-beam flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
272 if (digitsTree->GetUserInfo()->FindObject("BGflagsV0A")) {
273 aBGflagsV0A = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BGflagsV0A"))->GetVal();
276 AliWarning("V0A beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
278 if (digitsTree->GetUserInfo()->FindObject("BGflagsV0C")) {
279 aBGflagsV0C = ((TParameter<int>*)digitsTree->GetUserInfo()->FindObject("BGflagsV0C"))->GetVal();
282 AliWarning("V0C beam-gas flags not found in digits tree UserInfo! The flags will not be written to the raw-data stream!");
284 // Beam-beam and beam-gas flags (hardware)
285 for (Int_t iChannel = 0; iChannel < 64; ++iChannel) {
287 aBBflag[iChannel] = (aBBflagsV0C >> iChannel) & 0x1;
288 aBGflag[iChannel] = (aBGflagsV0C >> iChannel) & 0x1;
291 aBBflag[iChannel] = (aBBflagsV0A >> (iChannel-32)) & 0x1;
292 aBGflag[iChannel] = (aBGflagsV0A >> (iChannel-32)) & 0x1;
296 Int_t nEntries = (Int_t)digitsTree->GetEntries();
297 for (Int_t e=0; e<nEntries; e++) {
298 digitsTree->GetEvent(e);
300 Int_t nDigits = fDigitsArray->GetEntriesFast();
302 for (Int_t d=0; d<nDigits; d++) {
303 AliVZEROdigit* digit = (AliVZEROdigit*) fDigitsArray->At(d);
304 Int_t pmNumber = digit->PMNumber();
306 // Pedestal retrieval and suppression
307 Bool_t integrator = digit->Integrator();
310 Float_t adcPedSub[AliVZEROdigit::kNClocks];
311 for(Int_t iClock=0; iClock < AliVZEROdigit::kNClocks; ++iClock) {
312 Short_t charge = digit->ChargeADC(iClock);
313 Bool_t iIntegrator = (iClock%2 == 0) ? integrator : !integrator;
314 Int_t k = pmNumber + 64*iIntegrator;
315 adcPedSub[iClock] = (Float_t)charge - fCalibData->GetPedestal(k);
316 if(adcPedSub[iClock] <= GetRecoParam()->GetNSigmaPed()*fCalibData->GetSigma(k)) {
317 adcPedSub[iClock] = 0;
320 if(iClock < GetRecoParam()->GetStartClock() || iClock > GetRecoParam()->GetEndClock()) continue;
321 if(adcPedSub[iClock] > maxadc) {
322 maxadc = adcPedSub[iClock];
328 Int_t start = imax - GetRecoParam()->GetNPreClocks();
329 if (start < 0) start = 0;
330 Int_t end = imax + GetRecoParam()->GetNPostClocks();
331 if (end > 20) end = 20;
332 for(Int_t iClock = start; iClock <= end; iClock++) {
333 adc[pmNumber] += adcPedSub[iClock];
337 // HPTDC leading time and width
338 // Correction for slewing and various time delays
339 time[pmNumber] = CorrectLeadingTime(pmNumber,digit->Time(),adc[pmNumber]);
340 width[pmNumber] = digit->Width();
342 if (adc[pmNumber] > 0) {
343 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],
344 digit->Time(),time[pmNumber],
346 digit->ChargeADC(8),digit->ChargeADC(9),digit->ChargeADC(10),
347 digit->ChargeADC(11),digit->ChargeADC(12),
348 fCalibData->GetPedestal(pmNumber),fCalibData->GetSigma(pmNumber),
349 fCalibData->GetPedestal(pmNumber+64),fCalibData->GetSigma(pmNumber+64),
350 aBBflag[pmNumber],aBGflag[pmNumber]));
353 mult[pmNumber] = adc[pmNumber]*fCalibData->GetMIPperADC(pmNumber);
355 // Fill ESD friend object
356 for (Int_t iEv = 0; iEv < AliESDVZEROfriend::kNEvOfInt; iEv++) {
357 fESDVZEROfriend->SetPedestal(pmNumber,iEv,(Float_t)digit->ChargeADC(iEv));
358 fESDVZEROfriend->SetIntegratorFlag(pmNumber,iEv,(iEv%2 == 0) ? integrator : !integrator);
360 fESDVZEROfriend->SetTime(pmNumber,digit->Time());
361 fESDVZEROfriend->SetWidth(pmNumber,digit->Width());
363 } // end of loop over digits
364 } // end of loop over events in digits tree
366 fESDVZERO->SetBit(AliESDVZERO::kCorrectedLeadingTime,kTRUE);
367 fESDVZERO->SetMultiplicity(mult);
368 fESDVZERO->SetADC(adc);
369 fESDVZERO->SetTime(time);
370 fESDVZERO->SetWidth(width);
371 fESDVZERO->SetBit(AliESDVZERO::kOnlineBitsFilled,kTRUE);
372 fESDVZERO->SetBBFlag(aBBflag);
373 fESDVZERO->SetBGFlag(aBGflag);
375 // now fill the V0 decision and channel flags
377 AliVZEROTriggerMask triggerMask;
378 triggerMask.FillMasks(fESDVZERO, fCalibData, fTimeSlewing);
382 AliDebug(1, Form("Writing VZERO data to ESD tree"));
383 esd->SetVZEROData(fESDVZERO);
387 AliESDfriend *fr = (AliESDfriend*)esd->FindListObject("AliESDfriend");
389 AliDebug(1, Form("Writing VZERO friend data to ESD tree"));
390 fr->SetVZEROfriend(fESDVZEROfriend);
394 fDigitsArray->Clear();
397 //_____________________________________________________________________________
398 AliCDBStorage* AliVZEROReconstructor::SetStorage(const char *uri)
402 Bool_t deleteManager = kFALSE;
404 AliCDBManager *manager = AliCDBManager::Instance();
405 AliCDBStorage *defstorage = manager->GetDefaultStorage();
407 if(!defstorage || !(defstorage->Contains("VZERO"))){
408 AliWarning("No default storage set or default storage doesn't contain VZERO!");
409 manager->SetDefaultStorage(uri);
410 deleteManager = kTRUE;
413 AliCDBStorage *storage = manager->GetDefaultStorage();
416 AliCDBManager::Instance()->UnsetDefaultStorage();
417 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
423 //____________________________________________________________________________
424 void AliVZEROReconstructor::GetCollisionMode()
426 // Retrieval of collision mode
428 TString beamType = GetRunInfo()->GetBeamType();
429 if(beamType==AliGRPObject::GetInvalidString()){
430 AliError("VZERO cannot retrieve beam type");
434 if( (beamType.CompareTo("P-P") ==0) || (beamType.CompareTo("p-p") ==0) ){
437 else if( (beamType.CompareTo("Pb-Pb") ==0) || (beamType.CompareTo("A-A") ==0) ){
441 fBeamEnergy = GetRunInfo()->GetBeamEnergy();
442 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()) {
443 AliError("Missing value for the beam energy ! Using 0");
447 AliDebug(1,Form("\n ++++++ Beam type and collision mode retrieved as %s %d @ %1.3f GeV ++++++\n\n",beamType.Data(), fCollisionMode, fBeamEnergy));
451 //_____________________________________________________________________________
452 AliVZEROCalibData* AliVZEROReconstructor::GetCalibData() const
454 // Gets calibration object for VZERO set
456 AliCDBManager *man = AliCDBManager::Instance();
458 AliCDBEntry *entry=0;
460 entry = man->Get("VZERO/Calib/Data");
462 AliVZEROCalibData *calibdata = 0;
464 if (entry) calibdata = (AliVZEROCalibData*) entry->GetObject();
465 if (!calibdata) AliFatal("No calibration data from calibration database !");
470 Float_t AliVZEROReconstructor::CorrectLeadingTime(Int_t i, Float_t time, Float_t adc) const
472 // Correct the leading time
473 // for slewing effect and
474 // misalignment of the channels
475 if (time < 1e-6) return kInvalidTime;
477 // Channel alignment and general offset subtraction
478 if (i < 32) time -= kV0CDelayCables;
479 time -= fTimeOffset[i];
481 // In case of pathological signals
482 if (adc < 1e-6) return time;
484 // Slewing correction
485 Float_t thr = fCalibData->GetCalibDiscriThr(i,kTRUE);
486 time -= fTimeSlewing->Eval(adc/thr);