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 // ZDC digitizer class //
22 ///////////////////////////////////////////////////////////////////////////////
32 // --- AliRoot header files
35 #include "AliHeader.h"
36 #include "AliGenHijingEventHeader.h"
37 #include "AliRunDigitizer.h"
38 #include "AliRunLoader.h"
39 #include "AliGRPObject.h"
40 #include "AliCDBManager.h"
41 #include "AliCDBEntry.h"
42 #include "AliZDCSDigit.h"
43 #include "AliZDCDigit.h"
44 #include "AliZDCFragment.h"
46 #include "AliZDCDigitizer.h"
49 class AliZDCPedestals;
51 ClassImp(AliZDCDigitizer)
54 //____________________________________________________________________________
55 AliZDCDigitizer::AliZDCDigitizer() :
57 fIsSignalInADCGate(kFALSE),
60 fSpectators2Track(kFALSE),
63 // Default constructor
64 for(Int_t i=0; i<2; i++) fADCRes[i]=0.;
67 //____________________________________________________________________________
68 AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
69 AliDigitizer(manager),
70 fIsCalibration(0), //By default the simulation doesn't create calib. data
71 fIsSignalInADCGate(kFALSE),
73 fPedData(GetPedData()),
74 fSpectators2Track(kFALSE),
77 // Get calibration data
78 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
79 for(Int_t i=0; i<5; i++){
80 for(Int_t j=0; j<5; j++)
85 //____________________________________________________________________________
86 AliZDCDigitizer::~AliZDCDigitizer()
93 //____________________________________________________________________________
94 AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
96 fIsCalibration(digitizer.fIsCalibration),
97 fIsSignalInADCGate(digitizer.fIsSignalInADCGate),
98 fFracLostSignal(digitizer.fFracLostSignal),
99 fPedData(digitizer.fPedData),
100 fSpectators2Track(digitizer.fSpectators2Track),
101 fBeamEnergy(digitizer.fBeamEnergy)
105 for(Int_t i=0; i<5; i++){
106 for(Int_t j=0; j<5; j++){
107 fPMGain[i][j] = digitizer.fPMGain[i][j];
110 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
115 //____________________________________________________________________________
116 Bool_t AliZDCDigitizer::Init()
118 // Initialize the digitizer
120 AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data");
121 if(!entry) AliFatal("No calibration data loaded!");
122 AliGRPObject* grpData = 0x0;
124 TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
127 grpData = new AliGRPObject();
128 grpData->ReadValuesFromMap(m);
131 grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
134 AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
137 AliError("No GRP entry found in OCDB! \n ");
141 TString beamType = grpData->GetBeamType();
142 if(beamType==AliGRPObject::GetInvalidString()){
143 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
146 fBeamEnergy = grpData->GetBeamEnergy();
147 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()){
148 AliWarning("GRP/GRP/Data entry: missing value for the beam energy ! Using 0.");
149 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
153 if((beamType.CompareTo("P-P")) == 0 || (beamType.CompareTo("p-p")) == 0){
154 //PTM gains rescaled to beam energy for p-p
155 // New correction coefficients for PMT gains needed
156 // to reproduce experimental spectra (from Grazia Jul 2010)
157 if(fBeamEnergy != 0){
158 for(Int_t j = 0; j < 5; j++){
159 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
160 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
161 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
162 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
164 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
165 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
167 AliInfo(Form(" PMT gains for p-p @ %1.0f+%1.0f GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
168 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
170 else{ // for RELDIS simulation
171 Float_t scalGainFactor = 0.5;
172 for(Int_t j = 0; j < 5; j++){
173 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
174 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
175 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
176 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
177 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
180 AliInfo(Form(" PMT gains for RELDIS simulation: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
181 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
184 else if((beamType.CompareTo("A-A")) == 0){
185 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
186 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
187 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
188 // Experimental data compared to EMD simulation for single nucleon peaks:
189 // ZN gains must be divided by 4, ZP gains by 10!
190 Float_t scalGainFactor = fBeamEnergy/2760.;
191 for(Int_t j = 0; j < 5; j++){
192 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
193 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
194 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
195 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
196 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
198 AliInfo(Form(" PMT gains for Pb-Pb @ %1.0f+%1.0f A GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
199 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
203 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
204 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
209 //____________________________________________________________________________
210 void AliZDCDigitizer::Exec(Option_t* /*option*/)
212 // Execute digitization
214 // ------------------------------------------------------------
215 // !!! 2nd ZDC set added
216 // *** 1st 3 arrays are digits from REAL (simulated) hits
217 // *** last 2 are copied from simulated digits
218 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
219 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
220 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
221 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
222 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
223 // ------------------------------------------------------------
225 for(Int_t iSector1=0; iSector1<5; iSector1++)
226 for(Int_t iSector2=0; iSector2<5; iSector2++){
227 pm[iSector1][iSector2] = 0;
230 // ------------------------------------------------------------
231 // ### Out of time ADC added (22 channels)
232 // --- same codification as for signal PTMs (see above)
233 // ------------------------------------------------------------
235 for(Int_t iSector1=0; iSector1<5; iSector1++)
236 for(Int_t iSector2=0; iSector2<5; iSector2++){
237 pmoot[iSector1][iSector2] = 0;
240 // impact parameter and number of spectators
242 Int_t specNTarg = 0, specPTarg = 0;
243 Int_t specNProj = 0, specPProj = 0;
244 Float_t signalTime0 = 0.;
246 // loop over input streams
247 for(Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){
249 // get run loader and ZDC loader
250 AliRunLoader* runLoader =
251 AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
252 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
253 if(!loader) continue;
256 loader->LoadSDigits();
257 TTree* treeS = loader->TreeS();
260 AliZDCSDigit* psdigit = &sdigit;
261 treeS->SetBranchAddress("ZDC", &psdigit);
264 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
265 treeS->GetEntry(iSDigit);
267 if(!psdigit) continue;
268 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
269 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
270 sdigit.GetSector(0), sdigit.GetSector(1)));
273 // Checking if signal is inside ADC gate
274 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
276 // Assuming a signal lenght of 20 ns, signal is in gate if
277 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
278 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
279 if(sdigit.GetTrackTime()>signalTime0+30.){
280 fIsSignalInADCGate = kFALSE;
281 // Vedi quaderno per spiegazione approx. usata
282 // nel calcolo della fraz. di segnale perso
283 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
287 Float_t sdSignal = sdigit.GetLightPM();
288 if(fIsSignalInADCGate == kFALSE){
289 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
290 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
291 sdSignal = (1-fFracLostSignal)*sdSignal;
294 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
296 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
297 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
298 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
303 loader->UnloadSDigits();
305 // get the impact parameter and the number of spectators in case of hijing
306 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
307 AliHeader* header = runLoader->GetHeader();
308 if(!header) continue;
309 AliGenEventHeader* genHeader = header->GenEventHeader();
310 if(!genHeader) continue;
311 if(!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue;
313 if(fSpectators2Track==kTRUE){
314 impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
315 specNProj = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
316 specPProj = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
317 specNTarg = ((AliGenHijingEventHeader*) genHeader)->TargSpectatorsn();
318 specPTarg = ((AliGenHijingEventHeader*) genHeader)->TargSpectatorsp();
319 printf("\n\t AliZDCDigitizer: b = %1.2f fm\n"
320 " \t PROJ.: #spectator n %d, #spectator p %d\n"
321 " \t TARG.: #spectator n %d, #spectator p %d\n",
322 impPar, specNProj, specPProj, specNTarg, specPTarg);
327 // Applying fragmentation algorithm and adding spectator signal
328 if(fSpectators2Track==kTRUE && impPar) {
329 Int_t freeSpecNProj, freeSpecPProj;
330 Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
331 Int_t freeSpecNTarg, freeSpecPTarg;
332 Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
333 SpectatorSignal(1, freeSpecNProj, pm);
334 printf("\t AliZDCDigitizer -> Adding signal for %d PROJ free spectator n",freeSpecNProj);
335 SpectatorSignal(2, freeSpecPProj, pm);
336 printf(" and %d free spectator p\n",freeSpecPProj);
337 SpectatorSignal(3, freeSpecNTarg, pm);
338 printf("\t AliZDCDigitizer -> Adding signal for %d TARG free spectator n",freeSpecNTarg);
339 SpectatorSignal(4, freeSpecPTarg, pm);
340 printf(" and %d free spectator p\n\n",freeSpecPTarg);
344 // get the output run loader and loader
345 AliRunLoader* runLoader =
346 AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
347 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
349 AliError("no ZDC loader found");
353 // create the output tree
354 const char* mode = "update";
355 if(runLoader->GetEventNumber() == 0) mode = "recreate";
356 loader->LoadDigits(mode);
357 loader->MakeTree("D");
358 TTree* treeD = loader->TreeD();
360 AliZDCDigit* pdigit = &digit;
361 const Int_t kBufferSize = 4000;
362 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
366 Int_t digi[2], digioot[2];
367 for(sector[0]=1; sector[0]<6; sector[0]++){
368 for(sector[1]=0; sector[1]<5; sector[1]++){
369 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
370 for(Int_t res=0; res<2; res++){
371 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
372 + Pedestal(sector[0], sector[1], res);
374 new(pdigit) AliZDCDigit(sector, digi);
378 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
379 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
382 } // Loop over detector
383 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
384 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
388 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
389 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
390 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
392 for(Int_t iref=0; iref<2; iref++){
393 sectorRef[0] = 3*iref+1;
394 for(Int_t res=0; res<2; res++){
395 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
397 new(pdigit) AliZDCDigit(sectorRef, sigRef);
401 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
402 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
405 // --- Adding digits for out-of-time channels after signal digits
406 for(sector[0]=1; sector[0]<6; sector[0]++){
407 for(sector[1]=0; sector[1]<5; sector[1]++){
408 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
409 for(Int_t res=0; res<2; res++){
410 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
412 new(pdigit) AliZDCDigit(sector, digioot);
416 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
417 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
420 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
422 for(Int_t iref=0; iref<2; iref++){
423 sectorRef[0] = 3*iref+1;
424 for(Int_t res=0; res<2; res++){
425 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
427 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
430 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
431 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
434 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
436 // write the output tree
437 loader->WriteDigits("OVERWRITE");
438 loader->UnloadDigits();
442 //_____________________________________________________________________________
443 void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
444 Int_t &freeSpecN, Int_t &freeSpecP) const
446 // simulate fragmentation of spectators
448 AliZDCFragment frag(impPar);
450 // Fragments generation
452 Int_t nAlpha = frag.GetNalpha();
455 frag.AttachNeutrons();
456 Int_t ztot = frag.GetZtot();
457 Int_t ntot = frag.GetNtot();
459 // Removing fragments and alpha pcs
460 freeSpecN = specN-ntot-2*nAlpha;
461 freeSpecP = specP-ztot-2*nAlpha;
463 // Removing deuterons
464 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
468 if(freeSpecN<0) freeSpecN=0;
469 if(freeSpecP<0) freeSpecP=0;
470 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
473 //_____________________________________________________________________________
474 void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
475 Float_t pm[5][5]) const
477 // add signal of the spectators
479 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
480 if(!specSignalFile || !specSignalFile->IsOpen()) {
481 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
485 TNtuple* zdcSignal=0x0;
487 Float_t sqrtS = 2*fBeamEnergy;
489 if(TMath::Abs(sqrtS-5500) < 100.){
490 specSignalFile->cd("energy5500");
492 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
493 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
494 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
496 else if(SpecType == 2) { // --- Signal for projectile spectator protons
497 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
498 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
500 else if(SpecType == 3) { // --- Signal for target spectator neutrons
501 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
502 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
504 else if(SpecType == 4) { // --- Signal for target spectator protons
505 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
506 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
509 else if(TMath::Abs(sqrtS-2760) < 100.){
510 specSignalFile->cd("energy2760");
512 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
513 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
514 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
516 else if(SpecType == 2) { // --- Signal for projectile spectator protons
517 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
518 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
520 else if(SpecType == 3) { // --- Signal for target spectator neutrons
521 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
522 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
524 else if(SpecType == 4) { // --- Signal for target spectator protons
525 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
526 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
531 printf("\n No spectator signal available for ZDC digitization\n");
535 Int_t nentries = (Int_t) zdcSignal->GetEntries();
538 Int_t pl, i, k, iev=0, rnd[125], volume[2];
539 for(pl=0;pl<125;pl++) rnd[pl] = 0;
540 if(numEvents > 125) {
541 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
544 for(pl=0;pl<numEvents;pl++){
545 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
546 if(rnd[pl] >= 9999) rnd[pl] = 9998;
547 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
549 // Sorting vector in ascending order with C function QSORT
550 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
552 for(i=0; i<nentries; i++){
553 zdcSignal->GetEvent(i);
554 entry = zdcSignal->GetArgs();
555 if(entry[0] == rnd[iev]){
556 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
558 Float_t lightQ = entry[7];
559 Float_t lightC = entry[8];
561 if(volume[0] != 3) { // ZN or ZP
562 pm[volume[0]-1][0] += lightC;
563 pm[volume[0]-1][volume[1]] += lightQ;
564 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
565 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
568 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
569 else pm[2][2] += lightQ; // ZEM 2
570 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
573 else if(entry[0] > rnd[iev]){
578 }while(iev<numEvents);
580 specSignalFile->Close();
581 delete specSignalFile;
585 //_____________________________________________________________________________
586 Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
589 // Evaluation of the ADC channel corresponding to the light yield Light
590 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
592 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
593 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
598 //_____________________________________________________________________________
599 Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
601 // Returns a pedestal for detector det, PM quad, channel with res.
605 if(fIsCalibration == 0){
606 Int_t index=0, kNch=24;
608 if(Det==1) index = Quad+kNch*Res; // ZNC
609 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
610 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
611 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
612 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
614 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
616 Float_t meanPed = fPedData->GetMeanPed(index);
617 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
618 pedValue = gRandom->Gaus(meanPed,pedWidth);
620 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
621 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
624 // To create calibration object
626 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
627 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
630 return (Int_t) pedValue;
633 //_____________________________________________________________________________
634 AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
637 Bool_t deleteManager = kFALSE;
639 AliCDBManager *manager = AliCDBManager::Instance();
640 AliCDBStorage *defstorage = manager->GetDefaultStorage();
642 if(!defstorage || !(defstorage->Contains("ZDC"))){
643 AliWarning("No default storage set or default storage doesn't contain ZDC!");
644 manager->SetDefaultStorage(uri);
645 deleteManager = kTRUE;
648 AliCDBStorage *storage = manager->GetDefaultStorage();
651 AliCDBManager::Instance()->UnsetDefaultStorage();
652 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
658 //_____________________________________________________________________________
659 AliZDCPedestals* AliZDCDigitizer::GetPedData() const
662 // Getting pedestal calibration object for ZDC set
664 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
665 if(!entry) AliFatal("No calibration data loaded!");
667 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
668 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");