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 ///////////////////////////////////////////////////////////////////////////////
24 // --- Standard libraries
34 // --- AliRoot header files
36 #include "AliHeader.h"
37 #include "AliGenHijingEventHeader.h"
38 #include "AliGenCocktailEventHeader.h"
39 #include "AliDigitizationInput.h"
40 #include "AliRunLoader.h"
41 #include "AliLoader.h"
42 #include "AliGRPObject.h"
43 #include "AliCDBManager.h"
44 #include "AliCDBEntry.h"
45 #include "AliZDCSDigit.h"
46 #include "AliZDCDigit.h"
47 #include "AliZDCFragment.h"
49 #include "AliZDCDigitizer.h"
52 class AliZDCPedestals;
54 ClassImp(AliZDCDigitizer)
57 //____________________________________________________________________________
58 AliZDCDigitizer::AliZDCDigitizer() :
60 fIsSignalInADCGate(kFALSE),
63 fSpectators2Track(kFALSE),
70 // Default constructor
71 for(Int_t i=0; i<2; i++) fADCRes[i]=0.;
74 //____________________________________________________________________________
75 AliZDCDigitizer::AliZDCDigitizer(AliDigitizationInput* digInput):
76 AliDigitizer(digInput),
77 fIsCalibration(0), //By default the simulation doesn't create calib. data
78 fIsSignalInADCGate(kFALSE),
80 fPedData(GetPedData()),
81 fSpectators2Track(kFALSE),
88 // Get calibration data
89 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
90 for(Int_t i=0; i<5; i++){
91 for(Int_t j=0; j<5; j++)
96 //____________________________________________________________________________
97 AliZDCDigitizer::~AliZDCDigitizer()
100 if(fSpectatorData!=NULL){
101 fSpectatorData->Close();
102 delete fSpectatorData;
107 //____________________________________________________________________________
108 AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
110 fIsCalibration(digitizer.fIsCalibration),
111 fIsSignalInADCGate(digitizer.fIsSignalInADCGate),
112 fFracLostSignal(digitizer.fFracLostSignal),
113 fPedData(digitizer.fPedData),
114 fSpectators2Track(digitizer.fSpectators2Track),
115 fBeamEnergy(digitizer.fBeamEnergy),
116 fBeamType(digitizer.fBeamType),
117 fIspASystem(digitizer.fIspASystem),
118 fIsRELDISgen(digitizer.fIsRELDISgen),
119 fSpectatorData(digitizer.fSpectatorData)
123 for(Int_t i=0; i<5; i++){
124 for(Int_t j=0; j<5; j++){
125 fPMGain[i][j] = digitizer.fPMGain[i][j];
128 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
133 //____________________________________________________________________________
134 Bool_t AliZDCDigitizer::Init()
136 // Initialize the digitizer
139 //printf(" **** Initializing AliZDCDigitizer fBeamEnergy = %1.0f GeV\n\n", fBeamEnergy);
140 AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data");
141 if(!entry) AliFatal("No calibration data loaded!");
142 AliGRPObject* grpData = 0x0;
144 TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
147 grpData = new AliGRPObject();
148 grpData->ReadValuesFromMap(m);
151 grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
154 AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
157 AliError("No GRP entry found in OCDB! \n ");
161 fBeamType = grpData->GetBeamType();
162 if(fBeamType==AliGRPObject::GetInvalidString()){
163 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
166 // If beam energy is not set from Config.C (RELDIS / spectator generators)
167 if(fBeamEnergy<0.01){
168 fBeamEnergy = grpData->GetBeamEnergy();
169 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()){
170 AliWarning("GRP/GRP/Data entry: missing value for the beam energy ! Using 0.");
171 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
178 AliInfo(" AliZDCDigitizer -> Manually setting beam type to p-A\n");
181 // Setting beam type for spectator generator and RELDIS generator
182 if(((fBeamType.CompareTo("UNKNOWN")) == 0) || fIsRELDISgen){
184 AliInfo(" AliZDCDigitizer -> Manually setting beam type to A-A\n");
186 printf("\n\t AliZDCDigitizer -> beam type %s - beam energy = %f GeV\n", fBeamType.Data(), fBeamEnergy);
187 if(fSpectators2Track) printf("\n\t AliZDCDigitizer -> spectator signal added at digit level\n\n");
191 //CalculatePMTGains();
194 AliWarning("\n Beam energy is 0 -> ZDC PMT gains can't be set -> NO ZDC DIGITS!!!\n");
198 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
199 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
204 //____________________________________________________________________________
205 void AliZDCDigitizer::Digitize(Option_t* /*option*/)
207 // Execute digitization
209 // ------------------------------------------------------------
210 // !!! 2nd ZDC set added
211 // *** 1st 3 arrays are digits from REAL (simulated) hits
212 // *** last 2 are copied from simulated digits
213 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
214 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
215 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
216 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
217 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
218 // ------------------------------------------------------------
220 for(Int_t iSector1=0; iSector1<5; iSector1++)
221 for(Int_t iSector2=0; iSector2<5; iSector2++){
222 pm[iSector1][iSector2] = 0;
225 // ------------------------------------------------------------
226 // ### Out of time ADC added (22 channels)
227 // --- same codification as for signal PTMs (see above)
228 // ------------------------------------------------------------
229 // Float_t pmoot[5][5];
230 // for(Int_t iSector1=0; iSector1<5; iSector1++)
231 // for(Int_t iSector2=0; iSector2<5; iSector2++){
232 // pmoot[iSector1][iSector2] = 0;
235 // impact parameter and number of spectators
237 Int_t specNTarg = 0, specPTarg = 0;
238 Int_t specNProj = 0, specPProj = 0;
239 Float_t signalTime0 = 0.;
241 // loop over input streams
242 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
244 // get run loader and ZDC loader
245 AliRunLoader* runLoader =
246 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
247 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
248 if(!loader) continue;
251 loader->LoadSDigits();
252 TTree* treeS = loader->TreeS();
255 AliZDCSDigit* psdigit = &sdigit;
256 treeS->SetBranchAddress("ZDC", &psdigit);
259 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
260 treeS->GetEntry(iSDigit);
262 if(!psdigit) continue;
263 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
264 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
265 sdigit.GetSector(0), sdigit.GetSector(1)));
268 // Checking if signal is inside ADC gate
269 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
271 // Assuming a signal lenght of 20 ns, signal is in gate if
272 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
273 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
274 if(sdigit.GetTrackTime()>signalTime0+30.){
275 fIsSignalInADCGate = kFALSE;
276 // Vedi quaderno per spiegazione approx. usata nel calcolo della fraz. di segnale perso
277 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
281 Float_t sdSignal = sdigit.GetLightPM();
282 if(fIsSignalInADCGate == kFALSE){
283 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
284 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
285 sdSignal = (1-fFracLostSignal)*sdSignal;
288 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
290 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
291 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
292 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
297 loader->UnloadSDigits();
299 // get the impact parameter and the number of spectators in case of hijing
300 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
301 AliHeader* header = runLoader->GetHeader();
302 if(!header) continue;
303 AliGenEventHeader* genHeader = header->GenEventHeader();
304 if(!genHeader) continue;
305 AliGenHijingEventHeader *hijingHeader = 0;
306 if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (genHeader);
307 else if(genHeader->InheritsFrom(AliGenCocktailEventHeader::Class())){
308 TList* listOfHeaders = ((AliGenCocktailEventHeader*) genHeader)->GetHeaders();
310 for(Int_t iH = 0; iH < listOfHeaders->GetEntries(); ++iH) {
311 AliGenEventHeader *currHeader = dynamic_cast <AliGenEventHeader *> (listOfHeaders->At(iH));
312 if (currHeader && currHeader->InheritsFrom(AliGenHijingEventHeader::Class())) {
313 hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (currHeader);
319 printf(" No list of headers from generator \n");
323 printf(" No HIJING header found in list of headers from generator\n");
326 if(hijingHeader && fSpectators2Track==kTRUE){
327 impPar = hijingHeader->ImpactParameter();
328 specNProj = hijingHeader->ProjSpectatorsn();
329 specPProj = hijingHeader->ProjSpectatorsp();
330 specNTarg = hijingHeader->TargSpectatorsn();
331 specPTarg = hijingHeader->TargSpectatorsp();
332 /*printf("\t AliZDCDigitizer: b = %1.2f fm\n"
333 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
334 " \t TARGET: #spectator n %d, #spectator p %d\n",
335 impPar, specNProj, specPProj, specNTarg, specPTarg);*/
337 // Applying fragmentation algorithm and adding spectator signal
338 Int_t freeSpecNProj=0, freeSpecPProj=0;
339 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
340 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
341 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
342 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
343 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
344 //printf("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj);
345 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
346 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
347 //printf("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg);
352 // get the output run loader and loader
353 AliRunLoader* runLoader =
354 AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
355 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
357 AliError("no ZDC loader found");
361 // create the output tree
362 const char* mode = "update";
363 if(runLoader->GetEventNumber() == 0) mode = "recreate";
364 loader->LoadDigits(mode);
365 loader->MakeTree("D");
366 TTree* treeD = loader->TreeD();
368 AliZDCDigit* pdigit = &digit;
369 const Int_t kBufferSize = 4000;
370 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
374 Int_t digi[2], digioot[2];
375 for(sector[0]=1; sector[0]<6; sector[0]++){
376 for(sector[1]=0; sector[1]<5; sector[1]++){
377 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
378 for(Int_t res=0; res<2; res++){
379 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
380 + Pedestal(sector[0], sector[1], res);
382 new(pdigit) AliZDCDigit(sector, digi);
386 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
387 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
390 } // Loop over detector
391 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
392 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
396 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
397 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
398 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
400 for(Int_t iref=0; iref<2; iref++){
401 sectorRef[0] = 3*iref+1;
402 for(Int_t res=0; res<2; res++){
403 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
405 new(pdigit) AliZDCDigit(sectorRef, sigRef);
409 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
410 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
413 // --- Adding digits for out-of-time channels after signal digits
414 for(sector[0]=1; sector[0]<6; sector[0]++){
415 for(sector[1]=0; sector[1]<5; sector[1]++){
416 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
417 for(Int_t res=0; res<2; res++){
418 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
420 new(pdigit) AliZDCDigit(sector, digioot);
424 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
425 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
428 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
430 for(Int_t iref=0; iref<2; iref++){
431 sectorRef[0] = 3*iref+1;
432 for(Int_t res=0; res<2; res++){
433 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
435 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
438 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
439 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
442 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
444 // write the output tree
445 loader->WriteDigits("OVERWRITE");
446 loader->UnloadDigits();
450 //_____________________________________________________________________________
451 void AliZDCDigitizer::ReadPMTGains()
453 // Read PMT gain from an external file
455 char *fname = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/PMTGainsdata.txt");
456 FILE *fdata = fopen(fname,"r");
458 AliWarning(" Can't open file $ALICE_ROOT/ZDC/PMTGainsdata.txt to read ZDC PMT Gains\n");
459 AliWarning(" -> ZDC signal will be pedestal!!!!!!!!!!!!\n\n");
464 Int_t beam[12], det[12];
465 Float_t gain[12], aEne[12], bEne[12];
466 for(int ir=0; ir<12; ir++){
467 for(int ic=0; ic<5; ic++){
468 read = fscanf(fdata,"%f ",&data[ic]);
469 if(read==0) AliDebug(3, " Error in reading PMT gains from external file ");
471 beam[ir] = (int) (data[0]);
472 det[ir] = (int) (data[1]);
479 if(((fBeamType.CompareTo("P-P")) == 0) || ((fBeamType.CompareTo("p-p")) == 0)){
480 for(int i=0; i<12; i++){
481 if(beam[i]==0 && fBeamEnergy!=0.){
482 if(det[i]!=31 && det[i]!=32){
483 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
485 else if(det[i] == 31) fPMGain[2][1] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
486 else if(det[i] == 32) fPMGain[2][2] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
490 printf("\n AliZDCDigitizer::ReadPMTGains -> ZDC PMT gains for p-p @ %1.0f+%1.0f GeV: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
491 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
493 else if(((fBeamType.CompareTo("A-A")) == 0)){
494 for(int i=0; i<12; i++){
496 Float_t scalGainFactor = fBeamEnergy/2760.;
497 if(det[i]!=31 && det[i]!=32){
498 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]/(aEne[i]*scalGainFactor);
501 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = gain[i]/(aEne[i]*scalGainFactor);
506 printf("\n AliZDCDigitizer::ReadPMTGains -> ZDC PMT gains for Pb-Pb @ %1.0f+%1.0f A GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
507 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
509 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A")) == 0)
510 || ((fBeamType.CompareTo("A-p")) == 0) || ((fBeamType.CompareTo("A-P")) == 0)){
511 for(int i=0; i<12; i++){
512 if(beam[i]==0 && fBeamEnergy!=0.){
513 if(det[i]==1 || det[i]==2){
514 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
518 Float_t scalGainFactor = fBeamEnergy/2760.;
519 Float_t npartScalingFactor = 208./15.;
520 if(det[i]==4 || det[i]==5){
521 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
523 else if(det[i]==31 || det[i]==32){
524 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
528 printf("\n AliZDCDigitizer::ReadPMTGains -> ZDC PMT gains for p-Pb: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
529 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
533 //_____________________________________________________________________________
534 void AliZDCDigitizer::CalculatePMTGains()
536 // Calculate PMT gain according to beam type and beam energy
537 if( ((fBeamType.CompareTo("P-P")) == 0) || ((fBeamType.CompareTo("p-p"))) ){
538 // PTM gains rescaled to beam energy for p-p
539 // New correction coefficients for PMT gains needed
540 // to reproduce experimental spectra (from Grazia Jul 2010)
541 if(fBeamEnergy != 0){
542 for(Int_t j = 0; j < 5; j++){
543 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
544 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
545 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
546 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
548 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
549 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
551 printf("\n AliZDCDigitizer::CalculatePMTGains -> ZDC PMT gains for p-p @ %1.0f+%1.0f GeV: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
552 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
556 else if(((fBeamType.CompareTo("A-A")) == 0)){
557 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
558 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
559 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
560 // Experimental data compared to EMD simulation for single nucleon peaks:
561 // ZN gains must be divided by 4, ZP gains by 10!
562 Float_t scalGainFactor = fBeamEnergy/2760.;
563 for(Int_t j = 0; j < 5; j++){
564 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
565 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
566 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
567 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
568 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
570 printf("\n AliZDCDigitizer::CalculatePMTGains -> ZDC PMT gains for Pb-Pb @ %1.0f+%1.0f A GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
571 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
573 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A"))) ){
574 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
575 // PTM gains rescaled to beam energy for p-p on side C
576 // WARNING! Energies are set by hand for 2011 pA RUN!!!
577 Float_t scalGainFactor = fBeamEnergy/2760.;
578 Float_t npartScalingFactor = 208./15.;
580 for(Int_t j = 0; j < 5; j++){
581 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNC (p)
582 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPC (p)
583 if(j<2) fPMGain[2][j] = npartScalingFactor*100000./scalGainFactor; // ZEM (Pb)
584 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
585 fPMGain[3][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNA (Pb)
586 fPMGain[4][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPA (Pb)
588 printf("\n AliZDCDigitizer::CalculatePMTGains -> ZDC PMT gains for p-Pb: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
589 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
591 else if(((fBeamType.CompareTo("A-p")) == 0) || ((fBeamType.CompareTo("A-P"))) ){
592 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side
593 // PTM gains rescaled to beam energy for p-p on side C
594 // WARNING! Energies are set by hand for 2011 pA RUN!!!
595 Float_t scalGainFactor = fBeamEnergy/2760.;
596 Float_t npartScalingFactor = 208./15.;
598 for(Int_t j = 0; j < 5; j++){
599 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNA (p)
600 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPA (p)
601 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
602 fPMGain[1][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNC (Pb)
603 fPMGain[2][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPC (Pb)
605 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000; // ZEM (pp)
606 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000; // ZEM (pp)
607 printf("\n AliZDCDigitizer::CalculatePMTGains -> ZDC PMT gains for p-Pb: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
608 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
612 //_____________________________________________________________________________
613 void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
614 Int_t &freeSpecN, Int_t &freeSpecP) const
616 // simulate fragmentation of spectators
618 AliZDCFragment frag(impPar);
620 // Fragments generation
622 Int_t nAlpha = frag.GetNalpha();
625 frag.AttachNeutrons();
626 Int_t ztot = frag.GetZtot();
627 Int_t ntot = frag.GetNtot();
629 // Removing fragments and alpha pcs
630 freeSpecN = specN-ntot-2*nAlpha;
631 freeSpecP = specP-ztot-2*nAlpha;
633 // Removing deuterons
634 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
638 if(freeSpecN<0) freeSpecN=0;
639 if(freeSpecP<0) freeSpecP=0;
640 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
643 //_____________________________________________________________________________
644 void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents, Float_t pm[5][5])
646 // add signal of the spectators
648 if(!fSpectatorData) fSpectatorData = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
649 if(!fSpectatorData || !fSpectatorData->IsOpen()) {
650 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
654 TNtuple* zdcSignal=0x0;
656 Float_t sqrtS = 2*fBeamEnergy;
658 if(TMath::Abs(sqrtS-5500) < 100.){
659 AliInfo(" Extracting signal from SpectatorSignal/energy5500 ");
660 fSpectatorData->cd("energy5500");
662 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
663 fSpectatorData->GetObject("energy5500/ZNCSignal;1",zdcSignal);
664 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
666 else if(SpecType == 2) { // --- Signal for projectile spectator protons
667 fSpectatorData->GetObject("energy5500/ZPCSignal;1",zdcSignal);
668 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
670 else if(SpecType == 3) { // --- Signal for target spectator neutrons
671 fSpectatorData->GetObject("energy5500/ZNASignal;1",zdcSignal);
672 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
674 else if(SpecType == 4) { // --- Signal for target spectator protons
675 fSpectatorData->GetObject("energy5500/ZPASignal;1",zdcSignal);
676 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
679 else if(TMath::Abs(sqrtS-2760) < 100.){
680 AliInfo(" Extracting signal from SpectatorSignal/energy2760 ");
681 fSpectatorData->cd("energy2760");
683 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
684 fSpectatorData->GetObject("energy2760/ZNCSignal;1",zdcSignal);
685 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
687 else if(SpecType == 2) { // --- Signal for projectile spectator protons
688 fSpectatorData->GetObject("energy2760/ZPCSignal;1",zdcSignal);
689 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
691 else if(SpecType == 3) { // --- Signal for target spectator neutrons
692 fSpectatorData->GetObject("energy2760/ZNASignal;1",zdcSignal);
693 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
695 else if(SpecType == 4) { // --- Signal for target spectator protons
696 fSpectatorData->GetObject("energy2760/ZPASignal;1",zdcSignal);
697 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
702 printf("\n No spectator signal available for ZDC digitization\n");
706 Int_t nentries = (Int_t) zdcSignal->GetEntries();
709 Int_t pl, i, k, iev=0, rnd[125], volume[2];
710 for(pl=0;pl<125;pl++) rnd[pl] = 0;
711 if(numEvents > 125) {
712 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
715 for(pl=0;pl<numEvents;pl++){
716 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
717 if(rnd[pl] >= 9999) rnd[pl] = 9998;
718 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
720 // Sorting vector in ascending order with C function QSORT
721 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
723 for(i=0; i<nentries; i++){
724 zdcSignal->GetEvent(i);
725 entry = zdcSignal->GetArgs();
726 if(entry[0] == rnd[iev]){
727 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
729 Float_t lightQ = entry[7];
730 Float_t lightC = entry[8];
732 if(volume[0] != 3) { // ZN or ZP
733 pm[volume[0]-1][0] += lightC;
734 pm[volume[0]-1][volume[1]] += lightQ;
735 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
736 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
739 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
740 else pm[2][2] += lightQ; // ZEM 2
741 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
744 else if(entry[0] > rnd[iev]){
749 }while(iev<numEvents);
754 //_____________________________________________________________________________
755 Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
758 // Evaluation of the ADC channel corresponding to the light yield Light
759 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
761 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
762 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
767 //_____________________________________________________________________________
768 Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
770 // Returns a pedestal for detector det, PM quad, channel with res.
774 if(fIsCalibration == 0){
775 Int_t index=0, kNch=24;
777 if(Det==1) index = Quad+kNch*Res; // ZNC
778 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
779 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
780 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
781 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
783 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
785 Float_t meanPed = fPedData->GetMeanPed(index);
786 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
787 pedValue = gRandom->Gaus(meanPed,pedWidth);
789 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
790 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
793 // To create calibration object
795 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
796 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
799 return (Int_t) pedValue;
802 //_____________________________________________________________________________
803 AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
806 Bool_t deleteManager = kFALSE;
808 AliCDBManager *manager = AliCDBManager::Instance();
809 AliCDBStorage *defstorage = manager->GetDefaultStorage();
811 if(!defstorage || !(defstorage->Contains("ZDC"))){
812 AliWarning("No default storage set or default storage doesn't contain ZDC!");
813 manager->SetDefaultStorage(uri);
814 deleteManager = kTRUE;
817 AliCDBStorage *storage = manager->GetDefaultStorage();
820 AliCDBManager::Instance()->UnsetDefaultStorage();
821 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
827 //_____________________________________________________________________________
828 AliZDCPedestals* AliZDCDigitizer::GetPedData() const
831 // Getting pedestal calibration object for ZDC set
833 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
834 if(!entry) AliFatal("No calibration data loaded!");
836 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
837 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");