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),
69 // Default constructor
70 for(Int_t i=0; i<2; i++) fADCRes[i]=0.;
73 //____________________________________________________________________________
74 AliZDCDigitizer::AliZDCDigitizer(AliDigitizationInput* digInput):
75 AliDigitizer(digInput),
76 fIsCalibration(0), //By default the simulation doesn't create calib. data
77 fIsSignalInADCGate(kFALSE),
79 fPedData(GetPedData()),
80 fSpectators2Track(kFALSE),
86 // Get calibration data
87 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
88 for(Int_t i=0; i<5; i++){
89 for(Int_t j=0; j<5; j++)
94 //____________________________________________________________________________
95 AliZDCDigitizer::~AliZDCDigitizer()
102 //____________________________________________________________________________
103 AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
105 fIsCalibration(digitizer.fIsCalibration),
106 fIsSignalInADCGate(digitizer.fIsSignalInADCGate),
107 fFracLostSignal(digitizer.fFracLostSignal),
108 fPedData(digitizer.fPedData),
109 fSpectators2Track(digitizer.fSpectators2Track),
110 fBeamEnergy(digitizer.fBeamEnergy),
111 fBeamType(digitizer.fBeamType),
112 fIspASystem(digitizer.fIspASystem),
113 fIsRELDISgen(digitizer.fIsRELDISgen)
117 for(Int_t i=0; i<5; i++){
118 for(Int_t j=0; j<5; j++){
119 fPMGain[i][j] = digitizer.fPMGain[i][j];
122 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
127 //____________________________________________________________________________
128 Bool_t AliZDCDigitizer::Init()
130 // Initialize the digitizer
133 //printf(" **** Initializing AliZDCDigitizer fBeamEnergy = %1.0f GeV\n\n", fBeamEnergy);
134 AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data");
135 if(!entry) AliFatal("No calibration data loaded!");
136 AliGRPObject* grpData = 0x0;
138 TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
141 grpData = new AliGRPObject();
142 grpData->ReadValuesFromMap(m);
145 grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
148 AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
151 AliError("No GRP entry found in OCDB! \n ");
155 fBeamType = grpData->GetBeamType();
156 if(fBeamType==AliGRPObject::GetInvalidString()){
157 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
160 // If beam energy is not set from Config.C (RELDIS / spectator generators)
161 if(fBeamEnergy<0.01){
162 fBeamEnergy = grpData->GetBeamEnergy();
163 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()){
164 AliWarning("GRP/GRP/Data entry: missing value for the beam energy ! Using 0.");
165 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
172 AliInfo(" AliZDCDigitizer -> Manually setting beam type to p-A\n");
175 // Setting beam type for spectator generator and RELDIS generator
176 if(((fBeamType.CompareTo("UNKNOWN")) == 0) || fIsRELDISgen){
178 AliInfo(" AliZDCDigitizer -> Manually setting beam type to A-A\n");
180 printf("\t AliZDCDigitizer -> beam type %s - beam energy = %f GeV\n", fBeamType.Data(), fBeamEnergy);
184 //CalculatePMTGains();
187 AliWarning("\n Beam energy is 0 -> ZDC PMT gains can't be set -> NO ZDC DIGITS!!!\n");
191 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
192 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
197 //____________________________________________________________________________
198 void AliZDCDigitizer::Digitize(Option_t* /*option*/)
200 // Execute digitization
202 // ------------------------------------------------------------
203 // !!! 2nd ZDC set added
204 // *** 1st 3 arrays are digits from REAL (simulated) hits
205 // *** last 2 are copied from simulated digits
206 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
207 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
208 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
209 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
210 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
211 // ------------------------------------------------------------
213 for(Int_t iSector1=0; iSector1<5; iSector1++)
214 for(Int_t iSector2=0; iSector2<5; iSector2++){
215 pm[iSector1][iSector2] = 0;
218 // ------------------------------------------------------------
219 // ### Out of time ADC added (22 channels)
220 // --- same codification as for signal PTMs (see above)
221 // ------------------------------------------------------------
222 // Float_t pmoot[5][5];
223 // for(Int_t iSector1=0; iSector1<5; iSector1++)
224 // for(Int_t iSector2=0; iSector2<5; iSector2++){
225 // pmoot[iSector1][iSector2] = 0;
228 // impact parameter and number of spectators
230 Int_t specNTarg = 0, specPTarg = 0;
231 Int_t specNProj = 0, specPProj = 0;
232 Float_t signalTime0 = 0.;
234 // loop over input streams
235 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
237 // get run loader and ZDC loader
238 AliRunLoader* runLoader =
239 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
240 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
241 if(!loader) continue;
244 loader->LoadSDigits();
245 TTree* treeS = loader->TreeS();
248 AliZDCSDigit* psdigit = &sdigit;
249 treeS->SetBranchAddress("ZDC", &psdigit);
252 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
253 treeS->GetEntry(iSDigit);
255 if(!psdigit) continue;
256 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
257 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
258 sdigit.GetSector(0), sdigit.GetSector(1)));
261 // Checking if signal is inside ADC gate
262 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
264 // Assuming a signal lenght of 20 ns, signal is in gate if
265 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
266 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
267 if(sdigit.GetTrackTime()>signalTime0+30.){
268 fIsSignalInADCGate = kFALSE;
269 // Vedi quaderno per spiegazione approx. usata nel calcolo della fraz. di segnale perso
270 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
274 Float_t sdSignal = sdigit.GetLightPM();
275 if(fIsSignalInADCGate == kFALSE){
276 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
277 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
278 sdSignal = (1-fFracLostSignal)*sdSignal;
281 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
283 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
284 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
285 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
290 loader->UnloadSDigits();
292 // get the impact parameter and the number of spectators in case of hijing
293 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
294 AliHeader* header = runLoader->GetHeader();
295 if(!header) continue;
296 AliGenEventHeader* genHeader = header->GenEventHeader();
297 if(!genHeader) continue;
298 AliGenHijingEventHeader *hijingHeader = 0;
299 if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (genHeader);
300 else if(genHeader->InheritsFrom(AliGenCocktailEventHeader::Class())){
301 TList* listOfHeaders = ((AliGenCocktailEventHeader*) genHeader)->GetHeaders();
302 if(listOfHeaders) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("Hijing"));
304 AliWarning(" No list of headers from generator -> skipping event\n");
308 if(!hijingHeader) continue;
310 if(fSpectators2Track==kTRUE){
311 impPar = hijingHeader->ImpactParameter();
312 specNProj = hijingHeader->ProjSpectatorsn();
313 specPProj = hijingHeader->ProjSpectatorsp();
314 specNTarg = hijingHeader->TargSpectatorsn();
315 specPTarg = hijingHeader->TargSpectatorsp();
316 AliInfo(Form("\t AliZDCDigitizer: b = %1.2f fm\n"
317 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
318 " \t TARGET: #spectator n %d, #spectator p %d\n",
319 impPar, specNProj, specPProj, specNTarg, specPTarg));
321 // Applying fragmentation algorithm and adding spectator signal
322 Int_t freeSpecNProj=0, freeSpecPProj=0;
323 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
324 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
325 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
326 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
327 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
328 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj));
329 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
330 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
331 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg));
336 // get the output run loader and loader
337 AliRunLoader* runLoader =
338 AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
339 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
341 AliError("no ZDC loader found");
345 // create the output tree
346 const char* mode = "update";
347 if(runLoader->GetEventNumber() == 0) mode = "recreate";
348 loader->LoadDigits(mode);
349 loader->MakeTree("D");
350 TTree* treeD = loader->TreeD();
352 AliZDCDigit* pdigit = &digit;
353 const Int_t kBufferSize = 4000;
354 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
358 Int_t digi[2], digioot[2];
359 for(sector[0]=1; sector[0]<6; sector[0]++){
360 for(sector[1]=0; sector[1]<5; sector[1]++){
361 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
362 for(Int_t res=0; res<2; res++){
363 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
364 + Pedestal(sector[0], sector[1], res);
366 new(pdigit) AliZDCDigit(sector, digi);
370 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
371 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
374 } // Loop over detector
375 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
376 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
380 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
381 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
382 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
384 for(Int_t iref=0; iref<2; iref++){
385 sectorRef[0] = 3*iref+1;
386 for(Int_t res=0; res<2; res++){
387 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
389 new(pdigit) AliZDCDigit(sectorRef, sigRef);
393 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
394 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
397 // --- Adding digits for out-of-time channels after signal digits
398 for(sector[0]=1; sector[0]<6; sector[0]++){
399 for(sector[1]=0; sector[1]<5; sector[1]++){
400 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
401 for(Int_t res=0; res<2; res++){
402 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
404 new(pdigit) AliZDCDigit(sector, digioot);
408 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
409 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
412 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
414 for(Int_t iref=0; iref<2; iref++){
415 sectorRef[0] = 3*iref+1;
416 for(Int_t res=0; res<2; res++){
417 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
419 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
422 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
423 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
426 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
428 // write the output tree
429 loader->WriteDigits("OVERWRITE");
430 loader->UnloadDigits();
434 //_____________________________________________________________________________
435 void AliZDCDigitizer::ReadPMTGains()
437 // Read PMT gain from an external file
439 char *fname = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/PMTGainsdata.txt");
440 FILE *fdata = fopen(fname,"r");
442 AliWarning(" Can't open file $ALICE_ROOT/ZDC/PMTGainsdata.txt to read ZDC PMT Gains\n");
443 AliWarning(" -> ZDC signal will be pedestal!!!!!!!!!!!!\n\n");
448 Int_t beam[12], det[12];
449 Float_t gain[12], aEne[12], bEne[12];
450 for(int ir=0; ir<12; ir++){
451 for(int ic=0; ic<5; ic++){
452 read = fscanf(fdata,"%f ",&data[ic]);
453 if(read==0) AliDebug(3, " Error in reading PMT gains from external file ");
463 if(((fBeamType.CompareTo("P-P")) == 0)){
464 for(int i=0; i<12; i++){
465 if(beam[i]==0 && fBeamEnergy!=0.){
466 if(det[i]!=31 && det[i]!=32){
467 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
469 else if(det[i] == 31) fPMGain[2][1] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
470 else if(det[i] == 32) fPMGain[2][2] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
474 AliInfo(Form("\n 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",
475 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
477 else if(((fBeamType.CompareTo("A-A")) == 0)){
478 for(int i=0; i<12; i++){
480 Float_t scalGainFactor = fBeamEnergy/2760.;
481 if(det[i]!=31 && det[i]!=32){
482 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]/(aEne[i]*scalGainFactor);
485 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = gain[i]/(aEne[i]*scalGainFactor);
490 AliInfo(Form("\n ZDC PMT gains for Pb-Pb @ %1.0f+%1.0f A GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
491 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
493 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A")) == 0)){
494 for(int i=0; i<12; i++){
495 if(beam[i]==0 && fBeamEnergy!=0.){
496 if(det[i]==1 || det[i]==2){
497 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
501 Float_t scalGainFactor = fBeamEnergy/2760.;
502 Float_t npartScalingFactor = 208./15.;
503 if(det[i]==4 || det[i]==5){
504 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
506 else if(det[i]==31 || det[i]==32){
507 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
511 AliInfo(Form("\n ZDC PMT gains for p-Pb: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
512 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
516 //_____________________________________________________________________________
517 void AliZDCDigitizer::CalculatePMTGains()
519 // Calculate PMT gain according to beam type and beam energy
520 if( ((fBeamType.CompareTo("P-P")) == 0) || ((fBeamType.CompareTo("p-p"))) ){
521 // PTM gains rescaled to beam energy for p-p
522 // New correction coefficients for PMT gains needed
523 // to reproduce experimental spectra (from Grazia Jul 2010)
524 if(fBeamEnergy != 0){
525 for(Int_t j = 0; j < 5; j++){
526 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
527 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
528 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
529 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
531 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
532 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
534 AliInfo(Form("\n 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",
535 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
539 else if(((fBeamType.CompareTo("A-A")) == 0)){
540 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
541 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
542 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
543 // Experimental data compared to EMD simulation for single nucleon peaks:
544 // ZN gains must be divided by 4, ZP gains by 10!
545 Float_t scalGainFactor = fBeamEnergy/2760.;
546 for(Int_t j = 0; j < 5; j++){
547 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
548 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
549 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
550 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
551 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
553 AliInfo(Form("\n ZDC PMT gains for Pb-Pb @ %1.0f+%1.0f A GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
554 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
556 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A"))) ){
557 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
558 // PTM gains rescaled to beam energy for p-p on side C
559 // WARNING! Energies are set by hand for 2011 pA RUN!!!
560 Float_t scalGainFactor = fBeamEnergy/2760.;
561 Float_t npartScalingFactor = 208./15.;
563 for(Int_t j = 0; j < 5; j++){
564 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNC (p)
565 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPC (p)
566 fPMGain[2][j] = npartScalingFactor*100000./scalGainFactor; // ZEM (Pb)
567 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
568 fPMGain[3][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNA (Pb)
569 fPMGain[4][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPA (Pb)
571 AliInfo(Form("\n ZDC PMT gains for p-Pb: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
572 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
576 //_____________________________________________________________________________
577 void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
578 Int_t &freeSpecN, Int_t &freeSpecP) const
580 // simulate fragmentation of spectators
582 AliZDCFragment frag(impPar);
584 // Fragments generation
586 Int_t nAlpha = frag.GetNalpha();
589 frag.AttachNeutrons();
590 Int_t ztot = frag.GetZtot();
591 Int_t ntot = frag.GetNtot();
593 // Removing fragments and alpha pcs
594 freeSpecN = specN-ntot-2*nAlpha;
595 freeSpecP = specP-ztot-2*nAlpha;
597 // Removing deuterons
598 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
602 if(freeSpecN<0) freeSpecN=0;
603 if(freeSpecP<0) freeSpecP=0;
604 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
607 //_____________________________________________________________________________
608 void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
609 Float_t pm[5][5]) const
611 // add signal of the spectators
613 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
614 if(!specSignalFile || !specSignalFile->IsOpen()) {
615 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
619 TNtuple* zdcSignal=0x0;
621 Float_t sqrtS = 2*fBeamEnergy;
623 if(TMath::Abs(sqrtS-5500) < 100.){
624 AliInfo(" Extracting signal from SpectatorSignal/energy5500 ");
625 specSignalFile->cd("energy5500");
627 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
628 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
629 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
631 else if(SpecType == 2) { // --- Signal for projectile spectator protons
632 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
633 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
635 else if(SpecType == 3) { // --- Signal for target spectator neutrons
636 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
637 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
639 else if(SpecType == 4) { // --- Signal for target spectator protons
640 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
641 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
644 else if(TMath::Abs(sqrtS-2760) < 100.){
645 AliInfo(" Extracting signal from SpectatorSignal/energy2760 ");
646 specSignalFile->cd("energy2760");
648 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
649 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
650 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
652 else if(SpecType == 2) { // --- Signal for projectile spectator protons
653 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
654 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
656 else if(SpecType == 3) { // --- Signal for target spectator neutrons
657 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
658 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
660 else if(SpecType == 4) { // --- Signal for target spectator protons
661 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
662 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
667 printf("\n No spectator signal available for ZDC digitization\n");
671 Int_t nentries = (Int_t) zdcSignal->GetEntries();
674 Int_t pl, i, k, iev=0, rnd[125], volume[2];
675 for(pl=0;pl<125;pl++) rnd[pl] = 0;
676 if(numEvents > 125) {
677 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
680 for(pl=0;pl<numEvents;pl++){
681 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
682 if(rnd[pl] >= 9999) rnd[pl] = 9998;
683 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
685 // Sorting vector in ascending order with C function QSORT
686 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
688 for(i=0; i<nentries; i++){
689 zdcSignal->GetEvent(i);
690 entry = zdcSignal->GetArgs();
691 if(entry[0] == rnd[iev]){
692 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
694 Float_t lightQ = entry[7];
695 Float_t lightC = entry[8];
697 if(volume[0] != 3) { // ZN or ZP
698 pm[volume[0]-1][0] += lightC;
699 pm[volume[0]-1][volume[1]] += lightQ;
700 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
701 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
704 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
705 else pm[2][2] += lightQ; // ZEM 2
706 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
709 else if(entry[0] > rnd[iev]){
714 }while(iev<numEvents);
716 specSignalFile->Close();
717 delete specSignalFile;
721 //_____________________________________________________________________________
722 Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
725 // Evaluation of the ADC channel corresponding to the light yield Light
726 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
728 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
729 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
734 //_____________________________________________________________________________
735 Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
737 // Returns a pedestal for detector det, PM quad, channel with res.
741 if(fIsCalibration == 0){
742 Int_t index=0, kNch=24;
744 if(Det==1) index = Quad+kNch*Res; // ZNC
745 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
746 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
747 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
748 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
750 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
752 Float_t meanPed = fPedData->GetMeanPed(index);
753 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
754 pedValue = gRandom->Gaus(meanPed,pedWidth);
756 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
757 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
760 // To create calibration object
762 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
763 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
766 return (Int_t) pedValue;
769 //_____________________________________________________________________________
770 AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
773 Bool_t deleteManager = kFALSE;
775 AliCDBManager *manager = AliCDBManager::Instance();
776 AliCDBStorage *defstorage = manager->GetDefaultStorage();
778 if(!defstorage || !(defstorage->Contains("ZDC"))){
779 AliWarning("No default storage set or default storage doesn't contain ZDC!");
780 manager->SetDefaultStorage(uri);
781 deleteManager = kTRUE;
784 AliCDBStorage *storage = manager->GetDefaultStorage();
787 AliCDBManager::Instance()->UnsetDefaultStorage();
788 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
794 //_____________________________________________________________________________
795 AliZDCPedestals* AliZDCDigitizer::GetPedData() const
798 // Getting pedestal calibration object for ZDC set
800 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
801 if(!entry) AliFatal("No calibration data loaded!");
803 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
804 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");