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("\n\t AliZDCDigitizer -> beam type %s - beam energy = %f GeV\n", fBeamType.Data(), fBeamEnergy);
181 if(fSpectators2Track) printf("\t AliZDCDigitizer -> spectator signal added at digit level\n");
185 //CalculatePMTGains();
188 AliWarning("\n Beam energy is 0 -> ZDC PMT gains can't be set -> NO ZDC DIGITS!!!\n");
192 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
193 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
198 //____________________________________________________________________________
199 void AliZDCDigitizer::Digitize(Option_t* /*option*/)
201 // Execute digitization
203 // ------------------------------------------------------------
204 // !!! 2nd ZDC set added
205 // *** 1st 3 arrays are digits from REAL (simulated) hits
206 // *** last 2 are copied from simulated digits
207 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
208 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
209 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
210 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
211 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
212 // ------------------------------------------------------------
214 for(Int_t iSector1=0; iSector1<5; iSector1++)
215 for(Int_t iSector2=0; iSector2<5; iSector2++){
216 pm[iSector1][iSector2] = 0;
219 // ------------------------------------------------------------
220 // ### Out of time ADC added (22 channels)
221 // --- same codification as for signal PTMs (see above)
222 // ------------------------------------------------------------
223 // Float_t pmoot[5][5];
224 // for(Int_t iSector1=0; iSector1<5; iSector1++)
225 // for(Int_t iSector2=0; iSector2<5; iSector2++){
226 // pmoot[iSector1][iSector2] = 0;
229 // impact parameter and number of spectators
231 Int_t specNTarg = 0, specPTarg = 0;
232 Int_t specNProj = 0, specPProj = 0;
233 Float_t signalTime0 = 0.;
235 // loop over input streams
236 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
238 // get run loader and ZDC loader
239 AliRunLoader* runLoader =
240 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
241 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
242 if(!loader) continue;
245 loader->LoadSDigits();
246 TTree* treeS = loader->TreeS();
249 AliZDCSDigit* psdigit = &sdigit;
250 treeS->SetBranchAddress("ZDC", &psdigit);
253 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
254 treeS->GetEntry(iSDigit);
256 if(!psdigit) continue;
257 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
258 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
259 sdigit.GetSector(0), sdigit.GetSector(1)));
262 // Checking if signal is inside ADC gate
263 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
265 // Assuming a signal lenght of 20 ns, signal is in gate if
266 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
267 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
268 if(sdigit.GetTrackTime()>signalTime0+30.){
269 fIsSignalInADCGate = kFALSE;
270 // Vedi quaderno per spiegazione approx. usata nel calcolo della fraz. di segnale perso
271 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
275 Float_t sdSignal = sdigit.GetLightPM();
276 if(fIsSignalInADCGate == kFALSE){
277 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
278 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
279 sdSignal = (1-fFracLostSignal)*sdSignal;
282 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
284 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
285 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
286 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
291 loader->UnloadSDigits();
293 // get the impact parameter and the number of spectators in case of hijing
294 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
295 AliHeader* header = runLoader->GetHeader();
296 if(!header) continue;
297 AliGenEventHeader* genHeader = header->GenEventHeader();
298 if(!genHeader) continue;
299 AliGenHijingEventHeader *hijingHeader = 0;
300 if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (genHeader);
301 else if(genHeader->InheritsFrom(AliGenCocktailEventHeader::Class())){
302 TList* listOfHeaders = ((AliGenCocktailEventHeader*) genHeader)->GetHeaders();
304 hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("Hijing"));
305 if(!hijingHeader) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("Hijing_0"));
306 if(!hijingHeader) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("HijingpPbPb"));
307 if(!hijingHeader) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("HijingpPb"));
308 if(!hijingHeader) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("HijingpPb_0"));
311 printf(" No list of headers from generator \n");
315 printf(" No HIJING header found in list of headers from generator\n");
318 if(hijingHeader && fSpectators2Track==kTRUE){
319 impPar = hijingHeader->ImpactParameter();
320 specNProj = hijingHeader->ProjSpectatorsn();
321 specPProj = hijingHeader->ProjSpectatorsp();
322 specNTarg = hijingHeader->TargSpectatorsn();
323 specPTarg = hijingHeader->TargSpectatorsp();
324 AliInfo(Form("\t AliZDCDigitizer: b = %1.2f fm\n"
325 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
326 " \t TARGET: #spectator n %d, #spectator p %d\n",
327 impPar, specNProj, specPProj, specNTarg, specPTarg));
329 // Applying fragmentation algorithm and adding spectator signal
330 Int_t freeSpecNProj=0, freeSpecPProj=0;
331 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
332 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
333 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
334 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
335 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
336 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj));
337 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
338 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
339 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg));
344 // get the output run loader and loader
345 AliRunLoader* runLoader =
346 AliRunLoader::GetRunLoader(fDigInput->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::ReadPMTGains()
445 // Read PMT gain from an external file
447 char *fname = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/PMTGainsdata.txt");
448 FILE *fdata = fopen(fname,"r");
450 AliWarning(" Can't open file $ALICE_ROOT/ZDC/PMTGainsdata.txt to read ZDC PMT Gains\n");
451 AliWarning(" -> ZDC signal will be pedestal!!!!!!!!!!!!\n\n");
456 Int_t beam[12], det[12];
457 Float_t gain[12], aEne[12], bEne[12];
458 for(int ir=0; ir<12; ir++){
459 for(int ic=0; ic<5; ic++){
460 read = fscanf(fdata,"%f ",&data[ic]);
461 if(read==0) AliDebug(3, " Error in reading PMT gains from external file ");
471 if(((fBeamType.CompareTo("P-P")) == 0)){
472 for(int i=0; i<12; i++){
473 if(beam[i]==0 && fBeamEnergy!=0.){
474 if(det[i]!=31 && det[i]!=32){
475 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
477 else if(det[i] == 31) fPMGain[2][1] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
478 else if(det[i] == 32) fPMGain[2][2] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
482 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",
483 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
485 else if(((fBeamType.CompareTo("A-A")) == 0)){
486 for(int i=0; i<12; i++){
488 Float_t scalGainFactor = fBeamEnergy/2760.;
489 if(det[i]!=31 && det[i]!=32){
490 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]/(aEne[i]*scalGainFactor);
493 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = gain[i]/(aEne[i]*scalGainFactor);
498 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",
499 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
501 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A")) == 0)
502 || ((fBeamType.CompareTo("A-p")) == 0) || ((fBeamType.CompareTo("A-P")) == 0)){
503 for(int i=0; i<12; i++){
504 if(beam[i]==0 && fBeamEnergy!=0.){
505 if(det[i]==1 || det[i]==2){
506 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
510 Float_t scalGainFactor = fBeamEnergy/2760.;
511 Float_t npartScalingFactor = 208./15.;
512 if(det[i]==4 || det[i]==5){
513 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
515 else if(det[i]==31 || det[i]==32){
516 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
520 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",
521 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
525 //_____________________________________________________________________________
526 void AliZDCDigitizer::CalculatePMTGains()
528 // Calculate PMT gain according to beam type and beam energy
529 if( ((fBeamType.CompareTo("P-P")) == 0) || ((fBeamType.CompareTo("p-p"))) ){
530 // PTM gains rescaled to beam energy for p-p
531 // New correction coefficients for PMT gains needed
532 // to reproduce experimental spectra (from Grazia Jul 2010)
533 if(fBeamEnergy != 0){
534 for(Int_t j = 0; j < 5; j++){
535 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
536 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
537 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
538 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
540 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
541 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
543 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",
544 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
548 else if(((fBeamType.CompareTo("A-A")) == 0)){
549 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
550 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
551 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
552 // Experimental data compared to EMD simulation for single nucleon peaks:
553 // ZN gains must be divided by 4, ZP gains by 10!
554 Float_t scalGainFactor = fBeamEnergy/2760.;
555 for(Int_t j = 0; j < 5; j++){
556 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
557 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
558 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
559 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
560 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
562 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",
563 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
565 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A"))) ){
566 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
567 // PTM gains rescaled to beam energy for p-p on side C
568 // WARNING! Energies are set by hand for 2011 pA RUN!!!
569 Float_t scalGainFactor = fBeamEnergy/2760.;
570 Float_t npartScalingFactor = 208./15.;
572 for(Int_t j = 0; j < 5; j++){
573 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNC (p)
574 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPC (p)
575 if(j<2) fPMGain[2][j] = npartScalingFactor*100000./scalGainFactor; // ZEM (Pb)
576 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
577 fPMGain[3][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNA (Pb)
578 fPMGain[4][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPA (Pb)
580 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",
581 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
583 else if(((fBeamType.CompareTo("A-p")) == 0) || ((fBeamType.CompareTo("A-P"))) ){
584 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side
585 // PTM gains rescaled to beam energy for p-p on side C
586 // WARNING! Energies are set by hand for 2011 pA RUN!!!
587 Float_t scalGainFactor = fBeamEnergy/2760.;
588 Float_t npartScalingFactor = 208./15.;
590 for(Int_t j = 0; j < 5; j++){
591 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNA (p)
592 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPA (p)
593 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
594 fPMGain[1][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNC (Pb)
595 fPMGain[2][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPC (Pb)
597 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000; // ZEM (pp)
598 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000; // ZEM (pp)
599 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",
600 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
604 //_____________________________________________________________________________
605 void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
606 Int_t &freeSpecN, Int_t &freeSpecP) const
608 // simulate fragmentation of spectators
610 AliZDCFragment frag(impPar);
612 // Fragments generation
614 Int_t nAlpha = frag.GetNalpha();
617 frag.AttachNeutrons();
618 Int_t ztot = frag.GetZtot();
619 Int_t ntot = frag.GetNtot();
621 // Removing fragments and alpha pcs
622 freeSpecN = specN-ntot-2*nAlpha;
623 freeSpecP = specP-ztot-2*nAlpha;
625 // Removing deuterons
626 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
630 if(freeSpecN<0) freeSpecN=0;
631 if(freeSpecP<0) freeSpecP=0;
632 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
635 //_____________________________________________________________________________
636 void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
637 Float_t pm[5][5]) const
639 // add signal of the spectators
641 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
642 if(!specSignalFile || !specSignalFile->IsOpen()) {
643 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
647 TNtuple* zdcSignal=0x0;
649 Float_t sqrtS = 2*fBeamEnergy;
651 if(TMath::Abs(sqrtS-5500) < 100.){
652 AliInfo(" Extracting signal from SpectatorSignal/energy5500 ");
653 specSignalFile->cd("energy5500");
655 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
656 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
657 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
659 else if(SpecType == 2) { // --- Signal for projectile spectator protons
660 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
661 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
663 else if(SpecType == 3) { // --- Signal for target spectator neutrons
664 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
665 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
667 else if(SpecType == 4) { // --- Signal for target spectator protons
668 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
669 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
672 else if(TMath::Abs(sqrtS-2760) < 100.){
673 AliInfo(" Extracting signal from SpectatorSignal/energy2760 ");
674 specSignalFile->cd("energy2760");
676 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
677 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
678 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
680 else if(SpecType == 2) { // --- Signal for projectile spectator protons
681 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
682 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
684 else if(SpecType == 3) { // --- Signal for target spectator neutrons
685 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
686 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
688 else if(SpecType == 4) { // --- Signal for target spectator protons
689 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
690 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
695 printf("\n No spectator signal available for ZDC digitization\n");
699 Int_t nentries = (Int_t) zdcSignal->GetEntries();
702 Int_t pl, i, k, iev=0, rnd[125], volume[2];
703 for(pl=0;pl<125;pl++) rnd[pl] = 0;
704 if(numEvents > 125) {
705 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
708 for(pl=0;pl<numEvents;pl++){
709 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
710 if(rnd[pl] >= 9999) rnd[pl] = 9998;
711 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
713 // Sorting vector in ascending order with C function QSORT
714 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
716 for(i=0; i<nentries; i++){
717 zdcSignal->GetEvent(i);
718 entry = zdcSignal->GetArgs();
719 if(entry[0] == rnd[iev]){
720 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
722 Float_t lightQ = entry[7];
723 Float_t lightC = entry[8];
725 if(volume[0] != 3) { // ZN or ZP
726 pm[volume[0]-1][0] += lightC;
727 pm[volume[0]-1][volume[1]] += lightQ;
728 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
729 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
732 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
733 else pm[2][2] += lightQ; // ZEM 2
734 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
737 else if(entry[0] > rnd[iev]){
742 }while(iev<numEvents);
744 specSignalFile->Close();
745 delete specSignalFile;
749 //_____________________________________________________________________________
750 Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
753 // Evaluation of the ADC channel corresponding to the light yield Light
754 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
756 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
757 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
762 //_____________________________________________________________________________
763 Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
765 // Returns a pedestal for detector det, PM quad, channel with res.
769 if(fIsCalibration == 0){
770 Int_t index=0, kNch=24;
772 if(Det==1) index = Quad+kNch*Res; // ZNC
773 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
774 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
775 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
776 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
778 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
780 Float_t meanPed = fPedData->GetMeanPed(index);
781 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
782 pedValue = gRandom->Gaus(meanPed,pedWidth);
784 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
785 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
788 // To create calibration object
790 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
791 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
794 return (Int_t) pedValue;
797 //_____________________________________________________________________________
798 AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
801 Bool_t deleteManager = kFALSE;
803 AliCDBManager *manager = AliCDBManager::Instance();
804 AliCDBStorage *defstorage = manager->GetDefaultStorage();
806 if(!defstorage || !(defstorage->Contains("ZDC"))){
807 AliWarning("No default storage set or default storage doesn't contain ZDC!");
808 manager->SetDefaultStorage(uri);
809 deleteManager = kTRUE;
812 AliCDBStorage *storage = manager->GetDefaultStorage();
815 AliCDBManager::Instance()->UnsetDefaultStorage();
816 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
822 //_____________________________________________________________________________
823 AliZDCPedestals* AliZDCDigitizer::GetPedData() const
826 // Getting pedestal calibration object for ZDC set
828 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
829 if(!entry) AliFatal("No calibration data loaded!");
831 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
832 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");