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1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id$ */
17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// ZDC digitizer class //
21// //
22///////////////////////////////////////////////////////////////////////////////
23
24#include <stdlib.h>
25
26// --- ROOT system
27#include <TTree.h>
28#include <TFile.h>
29#include <TNtuple.h>
30#include <TRandom.h>
31
32// --- AliRoot header files
33#include "AliRun.h"
34#include "AliHeader.h"
35#include "AliGenHijingEventHeader.h"
36#include "AliGenCocktailEventHeader.h"
37#include "AliDigitizationInput.h"
38#include "AliRunLoader.h"
39#include "AliLoader.h"
40#include "AliGRPObject.h"
41#include "AliCDBManager.h"
42#include "AliCDBEntry.h"
43#include "AliZDCSDigit.h"
44#include "AliZDCDigit.h"
45#include "AliZDCFragment.h"
46#include "AliZDCv3.h"
47#include "AliZDCDigitizer.h"
48
49class AliCDBStorage;
50class AliZDCPedestals;
51
52ClassImp(AliZDCDigitizer)
53
54
55//____________________________________________________________________________
56AliZDCDigitizer::AliZDCDigitizer() :
57 fIsCalibration(0),
58 fIsSignalInADCGate(kFALSE),
59 fFracLostSignal(0.),
60 fPedData(0),
61 fSpectators2Track(kFALSE),
62 fBeamEnergy(0.),
63 fBeamType(""),
64 fIspASystem(kFALSE),
65 fIsRELDISgen(kFALSE)
66{
67 // Default constructor
68 for(Int_t i=0; i<2; i++) fADCRes[i]=0.;
69}
70
71//____________________________________________________________________________
72AliZDCDigitizer::AliZDCDigitizer(AliDigitizationInput* digInput):
73 AliDigitizer(digInput),
74 fIsCalibration(0), //By default the simulation doesn't create calib. data
75 fIsSignalInADCGate(kFALSE),
76 fFracLostSignal(0.),
77 fPedData(GetPedData()),
78 fSpectators2Track(kFALSE),
79 fBeamEnergy(0.),
80 fBeamType(""),
81 fIspASystem(kFALSE),
82 fIsRELDISgen(kFALSE)
83{
84 // Get calibration data
85 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
86 for(Int_t i=0; i<5; i++){
87 for(Int_t j=0; j<5; j++)
88 fPMGain[i][j] = 0.;
89 }
90}
91
92//____________________________________________________________________________
93AliZDCDigitizer::~AliZDCDigitizer()
94{
95// Destructor
96// Not implemented
97}
98
99
100//____________________________________________________________________________
101AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
102 AliDigitizer(),
103 fIsCalibration(digitizer.fIsCalibration),
104 fIsSignalInADCGate(digitizer.fIsSignalInADCGate),
105 fFracLostSignal(digitizer.fFracLostSignal),
106 fPedData(digitizer.fPedData),
107 fSpectators2Track(digitizer.fSpectators2Track),
108 fBeamEnergy(digitizer.fBeamEnergy),
109 fBeamType(digitizer.fBeamType),
110 fIspASystem(digitizer.fIspASystem),
111 fIsRELDISgen(digitizer.fIsRELDISgen)
112{
113 // Copy constructor
114
115 for(Int_t i=0; i<5; i++){
116 for(Int_t j=0; j<5; j++){
117 fPMGain[i][j] = digitizer.fPMGain[i][j];
118 }
119 }
120 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
121
122
123}
124
125//____________________________________________________________________________
126Bool_t AliZDCDigitizer::Init()
127{
128 // Initialize the digitizer
129
130
131 //printf(" **** Initializing AliZDCDigitizer fBeamEnergy = %1.0f GeV\n\n", fBeamEnergy);
132 AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data");
133 if(!entry) AliFatal("No calibration data loaded!");
134 AliGRPObject* grpData = 0x0;
135 if(entry){
136 TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
137 if(m){
138 //m->Print();
139 grpData = new AliGRPObject();
140 grpData->ReadValuesFromMap(m);
141 }
142 else{
143 grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
144 }
145 entry->SetOwner(0);
146 AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
147 }
148 if(!grpData){
149 AliError("No GRP entry found in OCDB! \n ");
150 return kFALSE;
151 }
152
153 fBeamType = grpData->GetBeamType();
154 if(fBeamType==AliGRPObject::GetInvalidString()){
155 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
156 }
157
158 // If beam energy is not set from Config.C (RELDIS / spectator generators)
159 if(fBeamEnergy<0.01){
160 fBeamEnergy = grpData->GetBeamEnergy();
161 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()){
162 AliWarning("GRP/GRP/Data entry: missing value for the beam energy ! Using 0.");
163 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
164 fBeamEnergy = 0.;
165 }
166 }
167
168 if(fIspASystem){
169 fBeamType = "p-A";
170 AliInfo(" AliZDCDigitizer -> Manually setting beam type to p-A\n");
171 }
172
173 // Setting beam type for spectator generator and RELDIS generator
174 if(((fBeamType.CompareTo("UNKNOWN")) == 0) || fIsRELDISgen){
175 fBeamType = "A-A";
176 AliInfo(" AliZDCDigitizer -> Manually setting beam type to A-A\n");
177 }
178 printf("\t AliZDCDigitizer -> beam type %s - beam energy = %f GeV\n", fBeamType.Data(), fBeamEnergy);
179
180 CalculatePMTGains();
181
182 // ADC Caen V965
183 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
184 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
185
186 return kTRUE;
187}
188
189//____________________________________________________________________________
190void AliZDCDigitizer::Digitize(Option_t* /*option*/)
191{
192 // Execute digitization
193
194 // ------------------------------------------------------------
195 // !!! 2nd ZDC set added
196 // *** 1st 3 arrays are digits from REAL (simulated) hits
197 // *** last 2 are copied from simulated digits
198 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
199 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
200 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
201 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
202 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
203 // ------------------------------------------------------------
204 Float_t pm[5][5];
205 for(Int_t iSector1=0; iSector1<5; iSector1++)
206 for(Int_t iSector2=0; iSector2<5; iSector2++){
207 pm[iSector1][iSector2] = 0;
208 }
209
210 // ------------------------------------------------------------
211 // ### Out of time ADC added (22 channels)
212 // --- same codification as for signal PTMs (see above)
213 // ------------------------------------------------------------
214 Float_t pmoot[5][5];
215 for(Int_t iSector1=0; iSector1<5; iSector1++)
216 for(Int_t iSector2=0; iSector2<5; iSector2++){
217 pmoot[iSector1][iSector2] = 0;
218 }
219
220 // impact parameter and number of spectators
221 Float_t impPar = 0;
222 Int_t specNTarg = 0, specPTarg = 0;
223 Int_t specNProj = 0, specPProj = 0;
224 Float_t signalTime0 = 0.;
225
226 // loop over input streams
227 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
228
229 // get run loader and ZDC loader
230 AliRunLoader* runLoader =
231 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
232 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
233 if(!loader) continue;
234
235 // load sdigits
236 loader->LoadSDigits();
237 TTree* treeS = loader->TreeS();
238 if(!treeS) continue;
239 AliZDCSDigit sdigit;
240 AliZDCSDigit* psdigit = &sdigit;
241 treeS->SetBranchAddress("ZDC", &psdigit);
242
243 // loop over sdigits
244 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
245 treeS->GetEntry(iSDigit);
246 //
247 if(!psdigit) continue;
248 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
249 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
250 sdigit.GetSector(0), sdigit.GetSector(1)));
251 continue;
252 }
253 // Checking if signal is inside ADC gate
254 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
255 else{
256 // Assuming a signal lenght of 20 ns, signal is in gate if
257 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
258 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
259 if(sdigit.GetTrackTime()>signalTime0+30.){
260 fIsSignalInADCGate = kFALSE;
261 // Vedi quaderno per spiegazione approx. usata nel calcolo della fraz. di segnale perso
262 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
263 }
264 }
265
266 Float_t sdSignal = sdigit.GetLightPM();
267 if(fIsSignalInADCGate == kFALSE){
268 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
269 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
270 sdSignal = (1-fFracLostSignal)*sdSignal;
271 }
272
273 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
274 //Ch. debug
275 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
276 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
277 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
278 */
279
280 }
281
282 loader->UnloadSDigits();
283
284 // get the impact parameter and the number of spectators in case of hijing
285 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
286 AliHeader* header = runLoader->GetHeader();
287 if(!header) continue;
288 AliGenEventHeader* genHeader = header->GenEventHeader();
289 if(!genHeader) continue;
290 AliGenHijingEventHeader *hijingHeader = 0;
291 if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (genHeader);
292 else if(genHeader->InheritsFrom(AliGenCocktailEventHeader::Class())){
293 TList* listOfHeaders = ((AliGenCocktailEventHeader*) genHeader)->GetHeaders();
294 if(listOfHeaders) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("Hijing"));
295 else{
296 AliWarning(" No list of headers from generator -> skipping event\n");
297 continue;
298 }
299 }
300 if(!hijingHeader) continue;
301
302 if(fSpectators2Track==kTRUE){
303 impPar = hijingHeader->ImpactParameter();
304 specNProj = hijingHeader->ProjSpectatorsn();
305 specPProj = hijingHeader->ProjSpectatorsp();
306 specNTarg = hijingHeader->TargSpectatorsn();
307 specPTarg = hijingHeader->TargSpectatorsp();
308 AliInfo(Form("\t AliZDCDigitizer: b = %1.2f fm\n"
309 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
310 " \t TARGET: #spectator n %d, #spectator p %d\n",
311 impPar, specNProj, specPProj, specNTarg, specPTarg));
312
313 // Applying fragmentation algorithm and adding spectator signal
314 Int_t freeSpecNProj=0, freeSpecPProj=0;
315 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
316 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
317 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
318 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
319 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
320 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj));
321 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
322 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
323 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg));
324 }
325 }
326
327
328 // get the output run loader and loader
329 AliRunLoader* runLoader =
330 AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
331 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
332 if(!loader) {
333 AliError("no ZDC loader found");
334 return;
335 }
336
337 // create the output tree
338 const char* mode = "update";
339 if(runLoader->GetEventNumber() == 0) mode = "recreate";
340 loader->LoadDigits(mode);
341 loader->MakeTree("D");
342 TTree* treeD = loader->TreeD();
343 AliZDCDigit digit;
344 AliZDCDigit* pdigit = &digit;
345 const Int_t kBufferSize = 4000;
346 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
347
348 // Create digits
349 Int_t sector[2];
350 Int_t digi[2], digioot[2];
351 for(sector[0]=1; sector[0]<6; sector[0]++){
352 for(sector[1]=0; sector[1]<5; sector[1]++){
353 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
354 for(Int_t res=0; res<2; res++){
355 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
356 + Pedestal(sector[0], sector[1], res);
357 }
358 new(pdigit) AliZDCDigit(sector, digi);
359 treeD->Fill();
360
361 //Ch. debug
362 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
363 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
364
365 }
366 } // Loop over detector
367 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
368 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
369 Int_t sectorRef[2];
370 sectorRef[1] = 5;
371 Int_t sigRef[2];
372 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
373 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
374 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
375 //
376 for(Int_t iref=0; iref<2; iref++){
377 sectorRef[0] = 3*iref+1;
378 for(Int_t res=0; res<2; res++){
379 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
380 }
381 new(pdigit) AliZDCDigit(sectorRef, sigRef);
382 treeD->Fill();
383
384 //Ch. debug
385 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
386 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
387 }
388 //
389 // --- Adding digits for out-of-time channels after signal digits
390 for(sector[0]=1; sector[0]<6; sector[0]++){
391 for(sector[1]=0; sector[1]<5; sector[1]++){
392 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
393 for(Int_t res=0; res<2; res++){
394 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
395 }
396 new(pdigit) AliZDCDigit(sector, digioot);
397 treeD->Fill();
398
399 //Ch. debug
400 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
401 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
402 }
403 }
404 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
405 Int_t sigRefoot[2];
406 for(Int_t iref=0; iref<2; iref++){
407 sectorRef[0] = 3*iref+1;
408 for(Int_t res=0; res<2; res++){
409 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
410 }
411 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
412 treeD->Fill();
413 //Ch. debug
414 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
415 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
416
417 }
418 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
419
420 // write the output tree
421 loader->WriteDigits("OVERWRITE");
422 loader->UnloadDigits();
423}
424
425
426//_____________________________________________________________________________
427void AliZDCDigitizer::CalculatePMTGains()
428{
429// Calculate PMT gain according to beam type and beam energy
430 if(((fBeamType.CompareTo("P-P")) == 0)){
431 // PTM gains rescaled to beam energy for p-p
432 // New correction coefficients for PMT gains needed
433 // to reproduce experimental spectra (from Grazia Jul 2010)
434 if(fBeamEnergy != 0){
435 for(Int_t j = 0; j < 5; j++){
436 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
437 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
438 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
439 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
440 }
441 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
442 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
443 //
444 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",
445 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
446
447 }
448 }
449 else if(((fBeamType.CompareTo("A-A")) == 0)){
450 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
451 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
452 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
453 // Experimental data compared to EMD simulation for single nucleon peaks:
454 // ZN gains must be divided by 4, ZP gains by 10!
455 Float_t scalGainFactor = fBeamEnergy/2760.;
456 for(Int_t j = 0; j < 5; j++){
457 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
458 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
459 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
460 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
461 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
462 }
463 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",
464 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
465 }
466 else if(((fBeamType.CompareTo("p-A")) == 0)){
467 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
468 // PTM gains rescaled to beam energy for p-p on side C
469 // WARNING! Energies are set by hand for 2011 pA RUN!!!
470 Float_t scalGainFactor = fBeamEnergy*82/(208*2760.);
471
472 for(Int_t j = 0; j < 5; j++){
473 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNC (p)
474 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPC (p)
475 fPMGain[2][j] = 100000./scalGainFactor; // ZEM (Pb)
476 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA (Pb)
477 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA (Pb)
478 }
479 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",
480 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
481 }
482}
483
484//_____________________________________________________________________________
485void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
486 Int_t &freeSpecN, Int_t &freeSpecP) const
487{
488// simulate fragmentation of spectators
489
490 AliZDCFragment frag(impPar);
491
492 // Fragments generation
493 frag.GenerateIMF();
494 Int_t nAlpha = frag.GetNalpha();
495
496 // Attach neutrons
497 frag.AttachNeutrons();
498 Int_t ztot = frag.GetZtot();
499 Int_t ntot = frag.GetNtot();
500
501 // Removing fragments and alpha pcs
502 freeSpecN = specN-ntot-2*nAlpha;
503 freeSpecP = specP-ztot-2*nAlpha;
504
505 // Removing deuterons
506 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
507 freeSpecN -= ndeu;
508 freeSpecP -= ndeu;
509 //
510 if(freeSpecN<0) freeSpecN=0;
511 if(freeSpecP<0) freeSpecP=0;
512 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
513}
514
515//_____________________________________________________________________________
516void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
517 Float_t pm[5][5]) const
518{
519// add signal of the spectators
520
521 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
522 if(!specSignalFile || !specSignalFile->IsOpen()) {
523 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
524 return;
525 }
526
527 TNtuple* zdcSignal=0x0;
528
529 Float_t sqrtS = 2*fBeamEnergy;
530 //
531 if(TMath::Abs(sqrtS-5500) < 100.){
532 AliInfo(" Extracting signal from SpectatorSignal/energy5500 ");
533 specSignalFile->cd("energy5500");
534 //
535 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
536 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
537 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
538 }
539 else if(SpecType == 2) { // --- Signal for projectile spectator protons
540 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
541 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
542 }
543 else if(SpecType == 3) { // --- Signal for target spectator neutrons
544 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
545 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
546 }
547 else if(SpecType == 4) { // --- Signal for target spectator protons
548 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
549 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
550 }
551 }
552 else if(TMath::Abs(sqrtS-2760) < 100.){
553 AliInfo(" Extracting signal from SpectatorSignal/energy2760 ");
554 specSignalFile->cd("energy2760");
555 //
556 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
557 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
558 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
559 }
560 else if(SpecType == 2) { // --- Signal for projectile spectator protons
561 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
562 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
563 }
564 else if(SpecType == 3) { // --- Signal for target spectator neutrons
565 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
566 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
567 }
568 else if(SpecType == 4) { // --- Signal for target spectator protons
569 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
570 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
571 }
572 }
573
574 if(!zdcSignal){
575 printf("\n No spectator signal available for ZDC digitization\n");
576 return;
577 }
578
579 Int_t nentries = (Int_t) zdcSignal->GetEntries();
580
581 Float_t *entry;
582 Int_t pl, i, k, iev=0, rnd[125], volume[2];
583 for(pl=0;pl<125;pl++) rnd[pl] = 0;
584 if(numEvents > 125) {
585 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
586 numEvents = 125;
587 }
588 for(pl=0;pl<numEvents;pl++){
589 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
590 if(rnd[pl] >= 9999) rnd[pl] = 9998;
591 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
592 }
593 // Sorting vector in ascending order with C function QSORT
594 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
595 do{
596 for(i=0; i<nentries; i++){
597 zdcSignal->GetEvent(i);
598 entry = zdcSignal->GetArgs();
599 if(entry[0] == rnd[iev]){
600 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
601 //
602 Float_t lightQ = entry[7];
603 Float_t lightC = entry[8];
604 //
605 if(volume[0] != 3) { // ZN or ZP
606 pm[volume[0]-1][0] += lightC;
607 pm[volume[0]-1][volume[1]] += lightQ;
608 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
609 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
610 }
611 else {
612 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
613 else pm[2][2] += lightQ; // ZEM 2
614 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
615 }
616 }
617 else if(entry[0] > rnd[iev]){
618 iev++;
619 continue;
620 }
621 }
622 }while(iev<numEvents);
623
624 specSignalFile->Close();
625 delete specSignalFile;
626}
627
628
629//_____________________________________________________________________________
630Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
631 Int_t Res) const
632{
633 // Evaluation of the ADC channel corresponding to the light yield Light
634 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
635 // Ch. debug
636 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
637 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
638
639 return vADCch;
640}
641
642//_____________________________________________________________________________
643Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
644{
645 // Returns a pedestal for detector det, PM quad, channel with res.
646 //
647 Float_t pedValue;
648 // Normal run
649 if(fIsCalibration == 0){
650 Int_t index=0, kNch=24;
651 if(Quad!=5){
652 if(Det==1) index = Quad+kNch*Res; // ZNC
653 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
654 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
655 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
656 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
657 }
658 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
659 //
660 Float_t meanPed = fPedData->GetMeanPed(index);
661 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
662 pedValue = gRandom->Gaus(meanPed,pedWidth);
663 //
664 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
665 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
666 */
667 }
668 // To create calibration object
669 else{
670 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
671 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
672 }
673
674 return (Int_t) pedValue;
675}
676
677//_____________________________________________________________________________
678AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
679{
680
681 Bool_t deleteManager = kFALSE;
682
683 AliCDBManager *manager = AliCDBManager::Instance();
684 AliCDBStorage *defstorage = manager->GetDefaultStorage();
685
686 if(!defstorage || !(defstorage->Contains("ZDC"))){
687 AliWarning("No default storage set or default storage doesn't contain ZDC!");
688 manager->SetDefaultStorage(uri);
689 deleteManager = kTRUE;
690 }
691
692 AliCDBStorage *storage = manager->GetDefaultStorage();
693
694 if(deleteManager){
695 AliCDBManager::Instance()->UnsetDefaultStorage();
696 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
697 }
698
699 return storage;
700}
701
702//_____________________________________________________________________________
703AliZDCPedestals* AliZDCDigitizer::GetPedData() const
704{
705
706 // Getting pedestal calibration object for ZDC set
707
708 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
709 if(!entry) AliFatal("No calibration data loaded!");
710
711 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
712 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
713
714 return calibdata;
715}
716