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8309c1ab 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
3d7e0d0c 24// --- Standard libraries
8309c1ab 25#include <stdlib.h>
3d7e0d0c 26#include <stdio.h>
8309c1ab 27
28// --- ROOT system
29#include <TTree.h>
30#include <TFile.h>
31#include <TNtuple.h>
32#include <TRandom.h>
33
34// --- AliRoot header files
8309c1ab 35#include "AliRun.h"
36#include "AliHeader.h"
37#include "AliGenHijingEventHeader.h"
07e38cef 38#include "AliGenCocktailEventHeader.h"
f21fc003 39#include "AliDigitizationInput.h"
8309c1ab 40#include "AliRunLoader.h"
c93255fe 41#include "AliLoader.h"
12434381 42#include "AliGRPObject.h"
78d18275 43#include "AliCDBManager.h"
48642b09 44#include "AliCDBEntry.h"
8309c1ab 45#include "AliZDCSDigit.h"
46#include "AliZDCDigit.h"
47#include "AliZDCFragment.h"
a18a0543 48#include "AliZDCv3.h"
8309c1ab 49#include "AliZDCDigitizer.h"
8a2624cc 50
51class AliCDBStorage;
6024ec85 52class AliZDCPedestals;
8309c1ab 53
54ClassImp(AliZDCDigitizer)
55
56
57//____________________________________________________________________________
a718c993 58AliZDCDigitizer::AliZDCDigitizer() :
59 fIsCalibration(0),
fd9afd60 60 fIsSignalInADCGate(kFALSE),
61 fFracLostSignal(0.),
a718c993 62 fPedData(0),
2d9c70ab 63 fSpectators2Track(kFALSE),
f2e2aa97 64 fBeamEnergy(0.),
5d24ec95 65 fBeamType(""),
66 fIspASystem(kFALSE),
67 fIsRELDISgen(kFALSE)
8309c1ab 68{
698e394d 69 // Default constructor
83534754 70 for(Int_t i=0; i<2; i++) fADCRes[i]=0.;
8309c1ab 71}
72
73//____________________________________________________________________________
f21fc003 74AliZDCDigitizer::AliZDCDigitizer(AliDigitizationInput* digInput):
75 AliDigitizer(digInput),
a718c993 76 fIsCalibration(0), //By default the simulation doesn't create calib. data
fd9afd60 77 fIsSignalInADCGate(kFALSE),
78 fFracLostSignal(0.),
a718c993 79 fPedData(GetPedData()),
2d9c70ab 80 fSpectators2Track(kFALSE),
f2e2aa97 81 fBeamEnergy(0.),
5d24ec95 82 fBeamType(""),
83 fIspASystem(kFALSE),
84 fIsRELDISgen(kFALSE)
8309c1ab 85{
78d18275 86 // Get calibration data
d27e20dd 87 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
edb4e893 88 for(Int_t i=0; i<5; i++){
698e394d 89 for(Int_t j=0; j<5; j++)
90 fPMGain[i][j] = 0.;
91 }
8309c1ab 92}
93
94//____________________________________________________________________________
95AliZDCDigitizer::~AliZDCDigitizer()
96{
97// Destructor
a718c993 98// Not implemented
8309c1ab 99}
100
101
cc2abffd 102//____________________________________________________________________________
103AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
a718c993 104 AliDigitizer(),
105 fIsCalibration(digitizer.fIsCalibration),
fd9afd60 106 fIsSignalInADCGate(digitizer.fIsSignalInADCGate),
107 fFracLostSignal(digitizer.fFracLostSignal),
a718c993 108 fPedData(digitizer.fPedData),
2d9c70ab 109 fSpectators2Track(digitizer.fSpectators2Track),
f2e2aa97 110 fBeamEnergy(digitizer.fBeamEnergy),
5d24ec95 111 fBeamType(digitizer.fBeamType),
112 fIspASystem(digitizer.fIspASystem),
113 fIsRELDISgen(digitizer.fIsRELDISgen)
cc2abffd 114{
115 // Copy constructor
116
edb4e893 117 for(Int_t i=0; i<5; i++){
cc2abffd 118 for(Int_t j=0; j<5; j++){
119 fPMGain[i][j] = digitizer.fPMGain[i][j];
120 }
121 }
122 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
cc2abffd 123
12434381 124
cc2abffd 125}
126
8309c1ab 127//____________________________________________________________________________
128Bool_t AliZDCDigitizer::Init()
129{
48642b09 130 // Initialize the digitizer
12434381 131
5d24ec95 132
133 //printf(" **** Initializing AliZDCDigitizer fBeamEnergy = %1.0f GeV\n\n", fBeamEnergy);
12434381 134 AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data");
83534754 135 if(!entry) AliFatal("No calibration data loaded!");
12434381 136 AliGRPObject* grpData = 0x0;
137 if(entry){
138 TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
139 if(m){
140 //m->Print();
141 grpData = new AliGRPObject();
142 grpData->ReadValuesFromMap(m);
143 }
144 else{
145 grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
146 }
147 entry->SetOwner(0);
148 AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
149 }
83534754 150 if(!grpData){
151 AliError("No GRP entry found in OCDB! \n ");
152 return kFALSE;
153 }
12434381 154
5d24ec95 155 fBeamType = grpData->GetBeamType();
156 if(fBeamType==AliGRPObject::GetInvalidString()){
12434381 157 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
158 }
159
5d24ec95 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");
166 fBeamEnergy = 0.;
a736fd93 167 }
12434381 168 }
f2e2aa97 169
170 if(fIspASystem){
5d24ec95 171 fBeamType = "p-A";
172 AliInfo(" AliZDCDigitizer -> Manually setting beam type to p-A\n");
f2e2aa97 173 }
5d24ec95 174
175 // Setting beam type for spectator generator and RELDIS generator
176 if(((fBeamType.CompareTo("UNKNOWN")) == 0) || fIsRELDISgen){
177 fBeamType = "A-A";
178 AliInfo(" AliZDCDigitizer -> Manually setting beam type to A-A\n");
179 }
180 printf("\t AliZDCDigitizer -> beam type %s - beam energy = %f GeV\n", fBeamType.Data(), fBeamEnergy);
181
db247fc3 182 if(fBeamEnergy>0.1){
183 ReadPMTGains();
184 }
185 else{
186 AliWarning("\n Beam energy is 0 -> ZDC PMT gains can't be set -> NO ZDC DIGITS!!!\n");
187 }
188
698e394d 189 // ADC Caen V965
7f73eb6b 190 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
191 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
8309c1ab 192
193 return kTRUE;
194}
195
196//____________________________________________________________________________
f21fc003 197void AliZDCDigitizer::Digitize(Option_t* /*option*/)
8309c1ab 198{
48642b09 199 // Execute digitization
8309c1ab 200
d79f8d50 201 // ------------------------------------------------------------
f91d1e35 202 // !!! 2nd ZDC set added
203 // *** 1st 3 arrays are digits from REAL (simulated) hits
204 // *** last 2 are copied from simulated digits
fd9afd60 205 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
206 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
48642b09 207 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
fd9afd60 208 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
209 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
d79f8d50 210 // ------------------------------------------------------------
211 Float_t pm[5][5];
8574b308 212 for(Int_t iSector1=0; iSector1<5; iSector1++)
213 for(Int_t iSector2=0; iSector2<5; iSector2++){
8309c1ab 214 pm[iSector1][iSector2] = 0;
215 }
d79f8d50 216
217 // ------------------------------------------------------------
218 // ### Out of time ADC added (22 channels)
219 // --- same codification as for signal PTMs (see above)
220 // ------------------------------------------------------------
221 Float_t pmoot[5][5];
8574b308 222 for(Int_t iSector1=0; iSector1<5; iSector1++)
223 for(Int_t iSector2=0; iSector2<5; iSector2++){
d79f8d50 224 pmoot[iSector1][iSector2] = 0;
225 }
8309c1ab 226
227 // impact parameter and number of spectators
131b5d31 228 Float_t impPar = 0;
fd9afd60 229 Int_t specNTarg = 0, specPTarg = 0;
230 Int_t specNProj = 0, specPProj = 0;
a18a0543 231 Float_t signalTime0 = 0.;
8309c1ab 232
233 // loop over input streams
f21fc003 234 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
8309c1ab 235
236 // get run loader and ZDC loader
237 AliRunLoader* runLoader =
f21fc003 238 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
8309c1ab 239 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 240 if(!loader) continue;
8309c1ab 241
242 // load sdigits
243 loader->LoadSDigits();
244 TTree* treeS = loader->TreeS();
8574b308 245 if(!treeS) continue;
8309c1ab 246 AliZDCSDigit sdigit;
247 AliZDCSDigit* psdigit = &sdigit;
248 treeS->SetBranchAddress("ZDC", &psdigit);
249
250 // loop over sdigits
8574b308 251 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
8309c1ab 252 treeS->GetEntry(iSDigit);
7f73eb6b 253 //
8574b308 254 if(!psdigit) continue;
255 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
8309c1ab 256 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
257 sdigit.GetSector(0), sdigit.GetSector(1)));
258 continue;
259 }
fd9afd60 260 // Checking if signal is inside ADC gate
261 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
262 else{
263 // Assuming a signal lenght of 20 ns, signal is in gate if
264 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
265 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
266 if(sdigit.GetTrackTime()>signalTime0+30.){
267 fIsSignalInADCGate = kFALSE;
5d24ec95 268 // Vedi quaderno per spiegazione approx. usata nel calcolo della fraz. di segnale perso
fd9afd60 269 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
270 }
271 }
698e394d 272
fd9afd60 273 Float_t sdSignal = sdigit.GetLightPM();
274 if(fIsSignalInADCGate == kFALSE){
7e858b1d 275 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
0fba8107 276 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
fd9afd60 277 sdSignal = (1-fFracLostSignal)*sdSignal;
278 }
279
48642b09 280 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
698e394d 281 //Ch. debug
282 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
48642b09 283 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
698e394d 284 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
878fa0b3 285 */
fd9afd60 286
8309c1ab 287 }
288
8309c1ab 289 loader->UnloadSDigits();
290
291 // get the impact parameter and the number of spectators in case of hijing
8574b308 292 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
d3b3a3b2 293 AliHeader* header = runLoader->GetHeader();
8574b308 294 if(!header) continue;
8309c1ab 295 AliGenEventHeader* genHeader = header->GenEventHeader();
8574b308 296 if(!genHeader) continue;
07e38cef 297 AliGenHijingEventHeader *hijingHeader = 0;
298 if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (genHeader);
299 else if(genHeader->InheritsFrom(AliGenCocktailEventHeader::Class())){
300 TList* listOfHeaders = ((AliGenCocktailEventHeader*) genHeader)->GetHeaders();
01e01248 301 if(listOfHeaders) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("Hijing"));
302 else{
303 AliWarning(" No list of headers from generator -> skipping event\n");
304 continue;
305 }
07e38cef 306 }
307 if(!hijingHeader) continue;
308
8fced614 309 if(fSpectators2Track==kTRUE){
310 impPar = hijingHeader->ImpactParameter();
07e38cef 311 specNProj = hijingHeader->ProjSpectatorsn();
312 specPProj = hijingHeader->ProjSpectatorsp();
313 specNTarg = hijingHeader->TargSpectatorsn();
314 specPTarg = hijingHeader->TargSpectatorsp();
5d24ec95 315 AliInfo(Form("\t AliZDCDigitizer: b = %1.2f fm\n"
8fced614 316 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
317 " \t TARGET: #spectator n %d, #spectator p %d\n",
5d24ec95 318 impPar, specNProj, specPProj, specNTarg, specPTarg));
a18a0543 319
5d24ec95 320 // Applying fragmentation algorithm and adding spectator signal
321 Int_t freeSpecNProj=0, freeSpecPProj=0;
322 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
323 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
324 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
325 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
326 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
327 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj));
328 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
329 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
330 AliInfo(Form("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg));
331 }
8309c1ab 332 }
333
8a2624cc 334
8309c1ab 335 // get the output run loader and loader
336 AliRunLoader* runLoader =
f21fc003 337 AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
8309c1ab 338 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 339 if(!loader) {
8309c1ab 340 AliError("no ZDC loader found");
341 return;
342 }
343
344 // create the output tree
345 const char* mode = "update";
8574b308 346 if(runLoader->GetEventNumber() == 0) mode = "recreate";
8309c1ab 347 loader->LoadDigits(mode);
348 loader->MakeTree("D");
349 TTree* treeD = loader->TreeD();
350 AliZDCDigit digit;
351 AliZDCDigit* pdigit = &digit;
352 const Int_t kBufferSize = 4000;
353 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
354
355 // Create digits
80e87581 356 Int_t sector[2];
357 Int_t digi[2], digioot[2];
358 for(sector[0]=1; sector[0]<6; sector[0]++){
abf60186 359 for(sector[1]=0; sector[1]<5; sector[1]++){
360 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 361 for(Int_t res=0; res<2; res++){
abf60186 362 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09 363 + Pedestal(sector[0], sector[1], res);
7f73eb6b 364 }
abf60186 365 new(pdigit) AliZDCDigit(sector, digi);
8309c1ab 366 treeD->Fill();
698e394d 367
368 //Ch. debug
369 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
370 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
371
8309c1ab 372 }
83347831 373 } // Loop over detector
374 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
375 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
376 Int_t sectorRef[2];
377 sectorRef[1] = 5;
9d38ced8 378 Int_t sigRef[2];
80e87581 379 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
9d38ced8 380 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
80e87581 381 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
9d38ced8 382 //
83347831 383 for(Int_t iref=0; iref<2; iref++){
384 sectorRef[0] = 3*iref+1;
385 for(Int_t res=0; res<2; res++){
386 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
387 }
83347831 388 new(pdigit) AliZDCDigit(sectorRef, sigRef);
389 treeD->Fill();
698e394d 390
391 //Ch. debug
392 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
393 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
abf60186 394 }
d79f8d50 395 //
396 // --- Adding digits for out-of-time channels after signal digits
80e87581 397 for(sector[0]=1; sector[0]<6; sector[0]++){
d79f8d50 398 for(sector[1]=0; sector[1]<5; sector[1]++){
399 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 400 for(Int_t res=0; res<2; res++){
d79f8d50 401 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
402 }
d79f8d50 403 new(pdigit) AliZDCDigit(sector, digioot);
404 treeD->Fill();
698e394d 405
406 //Ch. debug
407 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
408 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
d79f8d50 409 }
410 }
83347831 411 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
412 Int_t sigRefoot[2];
413 for(Int_t iref=0; iref<2; iref++){
414 sectorRef[0] = 3*iref+1;
415 for(Int_t res=0; res<2; res++){
416 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
417 }
83347831 418 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
419 treeD->Fill();
698e394d 420 //Ch. debug
421 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
422 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
423
83347831 424 }
425 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
426
8309c1ab 427 // write the output tree
428 loader->WriteDigits("OVERWRITE");
429 loader->UnloadDigits();
430}
431
432
25175f38 433//_____________________________________________________________________________
434void AliZDCDigitizer::ReadPMTGains()
435{
436// Read PMT gain from an external file
437
438 char *fname = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/PMTGainsdata.txt");
439 FILE *fdata = fopen(fname,"r");
440 if(fdata==NULL){
441 AliWarning(" Can't open file $ALICE_ROOT/ZDC/PMTGainsdata.txt to read ZDC PMT Gains\n");
442 AliWarning(" -> ZDC signal will be pedestal!!!!!!!!!!!!\n\n");
443 return;
444 }
3d7e0d0c 445 int read=1;
25175f38 446 Float_t data[5];
447 Int_t beam[12], det[12];
448 Float_t gain[12], aEne[12], bEne[12];
449 for(int ir=0; ir<12; ir++){
450 for(int ic=0; ic<5; ic++){
3d7e0d0c 451 read = fscanf(fdata,"%f ",&data[ic]);
452 if(read==0) AliDebug(3, " Error in reading PMT gains from external file ");
25175f38 453 }
454 beam[ir] = data[0];
455 det[ir] = data[1];
456 gain[ir] = data[2];
457 aEne[ir] = data[3];
458 bEne[ir] = data[4];
459 }
460
461 if(((fBeamType.CompareTo("P-P")) == 0)){
462 for(int i=0; i<12; i++){
463 if(beam[i]==0 && fBeamEnergy!=0.){
464 if(det[i]!=31 && det[i]!=32){
465 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
466 }
467 else if(det[i] == 31) fPMGain[2][1] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
468 else if(det[i] == 32) fPMGain[2][2] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
469 }
470 }
471 //
472 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",
473 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
474 }
475 else if(((fBeamType.CompareTo("A-A")) == 0)){
476 for(int i=0; i<12; i++){
477 if(beam[i]==1){
478 Float_t scalGainFactor = fBeamEnergy/2760.;
479 if(det[i]!=31 && det[i]!=32){
480 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]/(aEne[i]*scalGainFactor);
481 }
482 else{
483 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = gain[i]/(aEne[i]*scalGainFactor);
484 }
485 }
486 }
487 //
488 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",
489 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
490 }
491 else if(((fBeamType.CompareTo("p-A")) == 0)){
492 for(int i=0; i<12; i++){
493 if(beam[i]==0 && fBeamEnergy!=0.){
494 if(det[i]==1 || det[i]==2){
495 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
496 }
497 }
498 if(beam[i]==1){
499 Float_t scalGainFactor = fBeamEnergy/2760.;
500 Float_t npartScalingFactor = 208./15.;
501 if(det[i]==4 || det[i]==5){
502 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
503 }
504 else if(det[i]==31 || det[i]==32){
505 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
506 }
507 }
508 }
509 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",
510 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
511 }
512}
513
5d24ec95 514//_____________________________________________________________________________
515void AliZDCDigitizer::CalculatePMTGains()
516{
517// Calculate PMT gain according to beam type and beam energy
518 if(((fBeamType.CompareTo("P-P")) == 0)){
519 // PTM gains rescaled to beam energy for p-p
520 // New correction coefficients for PMT gains needed
521 // to reproduce experimental spectra (from Grazia Jul 2010)
522 if(fBeamEnergy != 0){
523 for(Int_t j = 0; j < 5; j++){
524 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
525 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
526 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
527 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
528 }
529 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
530 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
531 //
532 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",
533 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
534
535 }
536 }
537 else if(((fBeamType.CompareTo("A-A")) == 0)){
538 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
539 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
540 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
541 // Experimental data compared to EMD simulation for single nucleon peaks:
542 // ZN gains must be divided by 4, ZP gains by 10!
543 Float_t scalGainFactor = fBeamEnergy/2760.;
544 for(Int_t j = 0; j < 5; j++){
545 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
546 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
547 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
548 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
549 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
550 }
551 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",
552 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]));
553 }
554 else if(((fBeamType.CompareTo("p-A")) == 0)){
555 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
556 // PTM gains rescaled to beam energy for p-p on side C
557 // WARNING! Energies are set by hand for 2011 pA RUN!!!
312b8ed7 558 Float_t scalGainFactor = fBeamEnergy/2760.;
5d24ec95 559
560 for(Int_t j = 0; j < 5; j++){
561 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNC (p)
562 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPC (p)
563 fPMGain[2][j] = 100000./scalGainFactor; // ZEM (Pb)
312b8ed7 564 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
25175f38 565 fPMGain[3][j] = 10*50000./(4*scalGainFactor); // ZNA (Pb)
566 fPMGain[4][j] = 10*100000./(5*scalGainFactor); // ZPA (Pb)
5d24ec95 567 }
568 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",
569 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]));
570 }
571}
572
8309c1ab 573//_____________________________________________________________________________
574void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
575 Int_t &freeSpecN, Int_t &freeSpecP) const
576{
577// simulate fragmentation of spectators
578
8309c1ab 579 AliZDCFragment frag(impPar);
8309c1ab 580
581 // Fragments generation
92339a90 582 frag.GenerateIMF();
583 Int_t nAlpha = frag.GetNalpha();
8309c1ab 584
585 // Attach neutrons
98711e01 586 frag.AttachNeutrons();
92339a90 587 Int_t ztot = frag.GetZtot();
588 Int_t ntot = frag.GetNtot();
98711e01 589
590 // Removing fragments and alpha pcs
8309c1ab 591 freeSpecN = specN-ntot-2*nAlpha;
592 freeSpecP = specP-ztot-2*nAlpha;
98711e01 593
3848c666 594 // Removing deuterons
a0607c1f 595 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
3848c666 596 freeSpecN -= ndeu;
98711e01 597 freeSpecP -= ndeu;
3848c666 598 //
8309c1ab 599 if(freeSpecN<0) freeSpecN=0;
600 if(freeSpecP<0) freeSpecP=0;
601 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
602}
603
604//_____________________________________________________________________________
605void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
fd9afd60 606 Float_t pm[5][5]) const
8309c1ab 607{
608// add signal of the spectators
fd9afd60 609
2d9c70ab 610 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
611 if(!specSignalFile || !specSignalFile->IsOpen()) {
612 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
613 return;
8309c1ab 614 }
2d9c70ab 615
e7eabc21 616 TNtuple* zdcSignal=0x0;
2d9c70ab 617
618 Float_t sqrtS = 2*fBeamEnergy;
619 //
620 if(TMath::Abs(sqrtS-5500) < 100.){
5d24ec95 621 AliInfo(" Extracting signal from SpectatorSignal/energy5500 ");
2d9c70ab 622 specSignalFile->cd("energy5500");
623 //
624 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
625 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
626 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
627 }
628 else if(SpecType == 2) { // --- Signal for projectile spectator protons
629 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
630 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
631 }
632 else if(SpecType == 3) { // --- Signal for target spectator neutrons
633 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
634 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
635 }
636 else if(SpecType == 4) { // --- Signal for target spectator protons
637 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
638 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
639 }
fd9afd60 640 }
2d9c70ab 641 else if(TMath::Abs(sqrtS-2760) < 100.){
5d24ec95 642 AliInfo(" Extracting signal from SpectatorSignal/energy2760 ");
2d9c70ab 643 specSignalFile->cd("energy2760");
644 //
645 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
646 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
647 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
648 }
649 else if(SpecType == 2) { // --- Signal for projectile spectator protons
650 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
651 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
652 }
653 else if(SpecType == 3) { // --- Signal for target spectator neutrons
654 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
655 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
656 }
657 else if(SpecType == 4) { // --- Signal for target spectator protons
658 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
659 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
660 }
fd9afd60 661 }
662
83534754 663 if(!zdcSignal){
664 printf("\n No spectator signal available for ZDC digitization\n");
665 return;
666 }
667
8309c1ab 668 Int_t nentries = (Int_t) zdcSignal->GetEntries();
669
fd9afd60 670 Float_t *entry;
671 Int_t pl, i, k, iev=0, rnd[125], volume[2];
48642b09 672 for(pl=0;pl<125;pl++) rnd[pl] = 0;
8574b308 673 if(numEvents > 125) {
fea9b334 674 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
8309c1ab 675 numEvents = 125;
676 }
677 for(pl=0;pl<numEvents;pl++){
678 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223 679 if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab 680 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
681 }
682 // Sorting vector in ascending order with C function QSORT
683 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
684 do{
685 for(i=0; i<nentries; i++){
686 zdcSignal->GetEvent(i);
687 entry = zdcSignal->GetArgs();
688 if(entry[0] == rnd[iev]){
689 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
48642b09 690 //
fd9afd60 691 Float_t lightQ = entry[7];
692 Float_t lightC = entry[8];
693 //
acf9550c 694 if(volume[0] != 3) { // ZN or ZP
8309c1ab 695 pm[volume[0]-1][0] += lightC;
696 pm[volume[0]-1][volume[1]] += lightQ;
48642b09 697 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
698 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
699 }
700 else {
8574b308 701 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
acf9550c 702 else pm[2][2] += lightQ; // ZEM 2
48642b09 703 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
704 }
8309c1ab 705 }
706 else if(entry[0] > rnd[iev]){
707 iev++;
708 continue;
709 }
710 }
711 }while(iev<numEvents);
712
2d9c70ab 713 specSignalFile->Close();
714 delete specSignalFile;
8309c1ab 715}
716
717
718//_____________________________________________________________________________
719Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
720 Int_t Res) const
721{
48642b09 722 // Evaluation of the ADC channel corresponding to the light yield Light
8a2624cc 723 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
698e394d 724 // Ch. debug
725 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
726 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
7f73eb6b 727
8a2624cc 728 return vADCch;
48642b09 729}
8309c1ab 730
48642b09 731//_____________________________________________________________________________
732Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
733{
8a2624cc 734 // Returns a pedestal for detector det, PM quad, channel with res.
735 //
65b16e87 736 Float_t pedValue;
abf60186 737 // Normal run
738 if(fIsCalibration == 0){
c35ed519 739 Int_t index=0, kNch=24;
83347831 740 if(Quad!=5){
c35ed519 741 if(Det==1) index = Quad+kNch*Res; // ZNC
742 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
743 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
744 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
745 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
83347831 746 }
c35ed519 747 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
83347831 748 //
c35ed519 749 Float_t meanPed = fPedData->GetMeanPed(index);
750 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
65b16e87 751 pedValue = gRandom->Gaus(meanPed,pedWidth);
abf60186 752 //
58e12fee 753 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
65b16e87 754 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
abf60186 755 */
756 }
7f73eb6b 757 // To create calibration object
83347831 758 else{
65b16e87 759 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
760 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
83347831 761 }
dbc8d7fc 762
65b16e87 763 return (Int_t) pedValue;
8309c1ab 764}
765
766//_____________________________________________________________________________
78d18275 767AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab 768{
8309c1ab 769
78d18275 770 Bool_t deleteManager = kFALSE;
48642b09 771
78d18275 772 AliCDBManager *manager = AliCDBManager::Instance();
773 AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09 774
78d18275 775 if(!defstorage || !(defstorage->Contains("ZDC"))){
776 AliWarning("No default storage set or default storage doesn't contain ZDC!");
777 manager->SetDefaultStorage(uri);
778 deleteManager = kTRUE;
779 }
780
781 AliCDBStorage *storage = manager->GetDefaultStorage();
782
783 if(deleteManager){
784 AliCDBManager::Instance()->UnsetDefaultStorage();
785 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
786 }
787
788 return storage;
789}
48642b09 790
78d18275 791//_____________________________________________________________________________
6024ec85 792AliZDCPedestals* AliZDCDigitizer::GetPedData() const
793{
794
795 // Getting pedestal calibration object for ZDC set
796
797 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
798 if(!entry) AliFatal("No calibration data loaded!");
799
800 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
801 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
802
803 return calibdata;
804}
f91d1e35 805