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update PID fluctuations analysis (Satyajit Jena <Satyajit.Jena@cern.ch>)
[u/mrichter/AliRoot.git] / ZDC / AliZDCDigitizer.cxx
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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
f6c61b40 170 /*if(fIspASystem){
5d24ec95 171 fBeamType = "p-A";
172 AliInfo(" AliZDCDigitizer -> Manually setting beam type to p-A\n");
e40b9288 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 }
8f190cf4 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");
5d24ec95 182
db247fc3 183 if(fBeamEnergy>0.1){
184 ReadPMTGains();
f6c61b40 185 //CalculatePMTGains();
db247fc3 186 }
187 else{
188 AliWarning("\n Beam energy is 0 -> ZDC PMT gains can't be set -> NO ZDC DIGITS!!!\n");
189 }
190
698e394d 191 // ADC Caen V965
7f73eb6b 192 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
193 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
8309c1ab 194
195 return kTRUE;
196}
197
198//____________________________________________________________________________
f21fc003 199void AliZDCDigitizer::Digitize(Option_t* /*option*/)
8309c1ab 200{
48642b09 201 // Execute digitization
8309c1ab 202
d79f8d50 203 // ------------------------------------------------------------
f91d1e35 204 // !!! 2nd ZDC set added
205 // *** 1st 3 arrays are digits from REAL (simulated) hits
206 // *** last 2 are copied from simulated digits
fd9afd60 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]
48642b09 209 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
fd9afd60 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!
d79f8d50 212 // ------------------------------------------------------------
213 Float_t pm[5][5];
8574b308 214 for(Int_t iSector1=0; iSector1<5; iSector1++)
215 for(Int_t iSector2=0; iSector2<5; iSector2++){
8309c1ab 216 pm[iSector1][iSector2] = 0;
217 }
d79f8d50 218
219 // ------------------------------------------------------------
220 // ### Out of time ADC added (22 channels)
221 // --- same codification as for signal PTMs (see above)
222 // ------------------------------------------------------------
3d7ab74d 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;
227 // }
8309c1ab 228
229 // impact parameter and number of spectators
131b5d31 230 Float_t impPar = 0;
fd9afd60 231 Int_t specNTarg = 0, specPTarg = 0;
232 Int_t specNProj = 0, specPProj = 0;
a18a0543 233 Float_t signalTime0 = 0.;
8309c1ab 234
235 // loop over input streams
f21fc003 236 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
8309c1ab 237
238 // get run loader and ZDC loader
239 AliRunLoader* runLoader =
f21fc003 240 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
8309c1ab 241 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 242 if(!loader) continue;
8309c1ab 243
244 // load sdigits
245 loader->LoadSDigits();
246 TTree* treeS = loader->TreeS();
8574b308 247 if(!treeS) continue;
8309c1ab 248 AliZDCSDigit sdigit;
249 AliZDCSDigit* psdigit = &sdigit;
250 treeS->SetBranchAddress("ZDC", &psdigit);
251
252 // loop over sdigits
8574b308 253 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
8309c1ab 254 treeS->GetEntry(iSDigit);
7f73eb6b 255 //
8574b308 256 if(!psdigit) continue;
257 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
8309c1ab 258 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
259 sdigit.GetSector(0), sdigit.GetSector(1)));
260 continue;
261 }
fd9afd60 262 // Checking if signal is inside ADC gate
263 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
264 else{
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;
5d24ec95 270 // Vedi quaderno per spiegazione approx. usata nel calcolo della fraz. di segnale perso
fd9afd60 271 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
272 }
273 }
698e394d 274
fd9afd60 275 Float_t sdSignal = sdigit.GetLightPM();
276 if(fIsSignalInADCGate == kFALSE){
7e858b1d 277 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
0fba8107 278 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
fd9afd60 279 sdSignal = (1-fFracLostSignal)*sdSignal;
280 }
281
48642b09 282 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
698e394d 283 //Ch. debug
284 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
48642b09 285 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
698e394d 286 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
878fa0b3 287 */
fd9afd60 288
8309c1ab 289 }
290
8309c1ab 291 loader->UnloadSDigits();
292
293 // get the impact parameter and the number of spectators in case of hijing
8574b308 294 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
d3b3a3b2 295 AliHeader* header = runLoader->GetHeader();
8574b308 296 if(!header) continue;
8309c1ab 297 AliGenEventHeader* genHeader = header->GenEventHeader();
8574b308 298 if(!genHeader) continue;
07e38cef 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();
c47d6938 303 if(listOfHeaders){
4e97feaf 304 for(Int_t iH = 0; iH < listOfHeaders->GetEntries(); ++iH) {
305 AliGenEventHeader *currHeader = dynamic_cast <AliGenEventHeader *> (listOfHeaders->At(iH));
306 if (currHeader && currHeader->InheritsFrom(AliGenHijingEventHeader::Class())) {
307 hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (currHeader);
308 break;
309 }
310 }
c47d6938 311 }
01e01248 312 else{
8f190cf4 313 printf(" No list of headers from generator \n");
01e01248 314 }
07e38cef 315 }
c47d6938 316 if(!hijingHeader){
c47d6938 317 printf(" No HIJING header found in list of headers from generator\n");
c47d6938 318 }
07e38cef 319
a20bc87c 320 if(hijingHeader && fSpectators2Track==kTRUE){
8fced614 321 impPar = hijingHeader->ImpactParameter();
07e38cef 322 specNProj = hijingHeader->ProjSpectatorsn();
323 specPProj = hijingHeader->ProjSpectatorsp();
324 specNTarg = hijingHeader->TargSpectatorsn();
325 specPTarg = hijingHeader->TargSpectatorsp();
e40b9288 326 printf("\t AliZDCDigitizer: b = %1.2f fm\n"
8fced614 327 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
328 " \t TARGET: #spectator n %d, #spectator p %d\n",
e40b9288 329 impPar, specNProj, specPProj, specNTarg, specPTarg);
a18a0543 330
5d24ec95 331 // Applying fragmentation algorithm and adding spectator signal
332 Int_t freeSpecNProj=0, freeSpecPProj=0;
333 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
334 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
335 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
336 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
337 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
e40b9288 338 printf("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj);
5d24ec95 339 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
340 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
e40b9288 341 printf("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg);
5d24ec95 342 }
8309c1ab 343 }
344
8a2624cc 345
8309c1ab 346 // get the output run loader and loader
347 AliRunLoader* runLoader =
f21fc003 348 AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
8309c1ab 349 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 350 if(!loader) {
8309c1ab 351 AliError("no ZDC loader found");
352 return;
353 }
354
355 // create the output tree
356 const char* mode = "update";
8574b308 357 if(runLoader->GetEventNumber() == 0) mode = "recreate";
8309c1ab 358 loader->LoadDigits(mode);
359 loader->MakeTree("D");
360 TTree* treeD = loader->TreeD();
361 AliZDCDigit digit;
362 AliZDCDigit* pdigit = &digit;
363 const Int_t kBufferSize = 4000;
364 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
365
366 // Create digits
80e87581 367 Int_t sector[2];
368 Int_t digi[2], digioot[2];
369 for(sector[0]=1; sector[0]<6; sector[0]++){
abf60186 370 for(sector[1]=0; sector[1]<5; sector[1]++){
371 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 372 for(Int_t res=0; res<2; res++){
abf60186 373 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09 374 + Pedestal(sector[0], sector[1], res);
7f73eb6b 375 }
abf60186 376 new(pdigit) AliZDCDigit(sector, digi);
8309c1ab 377 treeD->Fill();
698e394d 378
379 //Ch. debug
380 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
e40b9288 381 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
698e394d 382
8309c1ab 383 }
83347831 384 } // Loop over detector
385 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
386 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
387 Int_t sectorRef[2];
388 sectorRef[1] = 5;
9d38ced8 389 Int_t sigRef[2];
80e87581 390 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
9d38ced8 391 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
80e87581 392 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
9d38ced8 393 //
83347831 394 for(Int_t iref=0; iref<2; iref++){
395 sectorRef[0] = 3*iref+1;
396 for(Int_t res=0; res<2; res++){
397 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
398 }
83347831 399 new(pdigit) AliZDCDigit(sectorRef, sigRef);
400 treeD->Fill();
698e394d 401
402 //Ch. debug
403 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
404 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
abf60186 405 }
d79f8d50 406 //
407 // --- Adding digits for out-of-time channels after signal digits
80e87581 408 for(sector[0]=1; sector[0]<6; sector[0]++){
d79f8d50 409 for(sector[1]=0; sector[1]<5; sector[1]++){
410 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 411 for(Int_t res=0; res<2; res++){
d79f8d50 412 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
413 }
d79f8d50 414 new(pdigit) AliZDCDigit(sector, digioot);
415 treeD->Fill();
698e394d 416
417 //Ch. debug
418 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
419 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
d79f8d50 420 }
421 }
83347831 422 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
423 Int_t sigRefoot[2];
424 for(Int_t iref=0; iref<2; iref++){
425 sectorRef[0] = 3*iref+1;
426 for(Int_t res=0; res<2; res++){
427 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
428 }
83347831 429 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
430 treeD->Fill();
698e394d 431 //Ch. debug
432 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
433 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
434
83347831 435 }
436 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
437
8309c1ab 438 // write the output tree
439 loader->WriteDigits("OVERWRITE");
440 loader->UnloadDigits();
441}
442
443
25175f38 444//_____________________________________________________________________________
445void AliZDCDigitizer::ReadPMTGains()
446{
447// Read PMT gain from an external file
448
449 char *fname = gSystem->ExpandPathName("$ALICE_ROOT/ZDC/PMTGainsdata.txt");
450 FILE *fdata = fopen(fname,"r");
451 if(fdata==NULL){
452 AliWarning(" Can't open file $ALICE_ROOT/ZDC/PMTGainsdata.txt to read ZDC PMT Gains\n");
453 AliWarning(" -> ZDC signal will be pedestal!!!!!!!!!!!!\n\n");
454 return;
455 }
3d7e0d0c 456 int read=1;
25175f38 457 Float_t data[5];
458 Int_t beam[12], det[12];
459 Float_t gain[12], aEne[12], bEne[12];
460 for(int ir=0; ir<12; ir++){
461 for(int ic=0; ic<5; ic++){
3d7e0d0c 462 read = fscanf(fdata,"%f ",&data[ic]);
463 if(read==0) AliDebug(3, " Error in reading PMT gains from external file ");
25175f38 464 }
465 beam[ir] = data[0];
466 det[ir] = data[1];
467 gain[ir] = data[2];
468 aEne[ir] = data[3];
469 bEne[ir] = data[4];
470 }
3d7ab74d 471 fclose(fdata);
25175f38 472
473 if(((fBeamType.CompareTo("P-P")) == 0)){
474 for(int i=0; i<12; i++){
475 if(beam[i]==0 && fBeamEnergy!=0.){
476 if(det[i]!=31 && det[i]!=32){
477 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
478 }
479 else if(det[i] == 31) fPMGain[2][1] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
480 else if(det[i] == 32) fPMGain[2][2] = gain[i]*(aEne[i]-fBeamEnergy*bEne[i]);
481 }
482 }
483 //
0e9277fd 484 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",
485 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
25175f38 486 }
487 else if(((fBeamType.CompareTo("A-A")) == 0)){
488 for(int i=0; i<12; i++){
489 if(beam[i]==1){
490 Float_t scalGainFactor = fBeamEnergy/2760.;
491 if(det[i]!=31 && det[i]!=32){
492 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]/(aEne[i]*scalGainFactor);
493 }
494 else{
495 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = gain[i]/(aEne[i]*scalGainFactor);
496 }
497 }
498 }
499 //
0e9277fd 500 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",
501 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
25175f38 502 }
0e9277fd 503 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A")) == 0)
504 || ((fBeamType.CompareTo("A-p")) == 0) || ((fBeamType.CompareTo("A-P")) == 0)){
25175f38 505 for(int i=0; i<12; i++){
506 if(beam[i]==0 && fBeamEnergy!=0.){
507 if(det[i]==1 || det[i]==2){
508 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = gain[i]*(aEne[i]/fBeamEnergy+bEne[i]);
509 }
510 }
511 if(beam[i]==1){
512 Float_t scalGainFactor = fBeamEnergy/2760.;
513 Float_t npartScalingFactor = 208./15.;
514 if(det[i]==4 || det[i]==5){
515 for(Int_t j=0; j<5; j++) fPMGain[det[i]-1][j] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
516 }
517 else if(det[i]==31 || det[i]==32){
518 for(int iq=1; iq<3; iq++) fPMGain[2][iq] = npartScalingFactor*gain[i]/(aEne[i]*scalGainFactor);
519 }
520 }
521 }
0e9277fd 522 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",
523 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
25175f38 524 }
525}
526
5d24ec95 527//_____________________________________________________________________________
528void AliZDCDigitizer::CalculatePMTGains()
529{
530// Calculate PMT gain according to beam type and beam energy
58b2fa8a 531 if( ((fBeamType.CompareTo("P-P")) == 0) || ((fBeamType.CompareTo("p-p"))) ){
5d24ec95 532 // PTM gains rescaled to beam energy for p-p
533 // New correction coefficients for PMT gains needed
534 // to reproduce experimental spectra (from Grazia Jul 2010)
535 if(fBeamEnergy != 0){
536 for(Int_t j = 0; j < 5; j++){
537 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
538 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
539 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
540 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
541 }
542 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
543 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
544 //
0e9277fd 545 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",
546 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
5d24ec95 547
548 }
549 }
550 else if(((fBeamType.CompareTo("A-A")) == 0)){
551 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
552 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
553 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
554 // Experimental data compared to EMD simulation for single nucleon peaks:
555 // ZN gains must be divided by 4, ZP gains by 10!
556 Float_t scalGainFactor = fBeamEnergy/2760.;
557 for(Int_t j = 0; j < 5; j++){
558 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
559 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
560 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
561 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
562 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
563 }
0e9277fd 564 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",
565 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
5d24ec95 566 }
f6c61b40 567 else if(((fBeamType.CompareTo("p-A")) == 0) || ((fBeamType.CompareTo("P-A"))) ){
5d24ec95 568 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
569 // PTM gains rescaled to beam energy for p-p on side C
570 // WARNING! Energies are set by hand for 2011 pA RUN!!!
312b8ed7 571 Float_t scalGainFactor = fBeamEnergy/2760.;
f6c61b40 572 Float_t npartScalingFactor = 208./15.;
5d24ec95 573
574 for(Int_t j = 0; j < 5; j++){
575 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNC (p)
576 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPC (p)
8f190cf4 577 if(j<2) fPMGain[2][j] = npartScalingFactor*100000./scalGainFactor; // ZEM (Pb)
312b8ed7 578 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
f6c61b40 579 fPMGain[3][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNA (Pb)
580 fPMGain[4][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPA (Pb)
5d24ec95 581 }
0e9277fd 582 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",
583 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
5d24ec95 584 }
8f190cf4 585 else if(((fBeamType.CompareTo("A-p")) == 0) || ((fBeamType.CompareTo("A-P"))) ){
586 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side
587 // PTM gains rescaled to beam energy for p-p on side C
588 // WARNING! Energies are set by hand for 2011 pA RUN!!!
589 Float_t scalGainFactor = fBeamEnergy/2760.;
590 Float_t npartScalingFactor = 208./15.;
591
592 for(Int_t j = 0; j < 5; j++){
593 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000; //ZNA (p)
594 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000; //ZPA (p)
595 // Npart max scales from 400 in Pb-Pb to ~8 in pPb -> *40.
596 fPMGain[1][j] = npartScalingFactor*50000/(4*scalGainFactor); // ZNC (Pb)
597 fPMGain[2][j] = npartScalingFactor*100000/(5*scalGainFactor); // ZPC (Pb)
598 }
599 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000; // ZEM (pp)
600 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000; // ZEM (pp)
601 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",
602 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
603 }
5d24ec95 604}
605
8309c1ab 606//_____________________________________________________________________________
607void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
608 Int_t &freeSpecN, Int_t &freeSpecP) const
609{
610// simulate fragmentation of spectators
611
8309c1ab 612 AliZDCFragment frag(impPar);
8309c1ab 613
614 // Fragments generation
92339a90 615 frag.GenerateIMF();
616 Int_t nAlpha = frag.GetNalpha();
8309c1ab 617
618 // Attach neutrons
98711e01 619 frag.AttachNeutrons();
92339a90 620 Int_t ztot = frag.GetZtot();
621 Int_t ntot = frag.GetNtot();
98711e01 622
623 // Removing fragments and alpha pcs
8309c1ab 624 freeSpecN = specN-ntot-2*nAlpha;
625 freeSpecP = specP-ztot-2*nAlpha;
98711e01 626
3848c666 627 // Removing deuterons
a0607c1f 628 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
3848c666 629 freeSpecN -= ndeu;
98711e01 630 freeSpecP -= ndeu;
3848c666 631 //
8309c1ab 632 if(freeSpecN<0) freeSpecN=0;
633 if(freeSpecP<0) freeSpecP=0;
634 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
635}
636
637//_____________________________________________________________________________
638void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
fd9afd60 639 Float_t pm[5][5]) const
8309c1ab 640{
641// add signal of the spectators
fd9afd60 642
2d9c70ab 643 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
644 if(!specSignalFile || !specSignalFile->IsOpen()) {
645 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
646 return;
8309c1ab 647 }
2d9c70ab 648
e7eabc21 649 TNtuple* zdcSignal=0x0;
2d9c70ab 650
651 Float_t sqrtS = 2*fBeamEnergy;
652 //
653 if(TMath::Abs(sqrtS-5500) < 100.){
5d24ec95 654 AliInfo(" Extracting signal from SpectatorSignal/energy5500 ");
2d9c70ab 655 specSignalFile->cd("energy5500");
656 //
657 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
658 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
659 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
660 }
661 else if(SpecType == 2) { // --- Signal for projectile spectator protons
662 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
663 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
664 }
665 else if(SpecType == 3) { // --- Signal for target spectator neutrons
666 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
667 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
668 }
669 else if(SpecType == 4) { // --- Signal for target spectator protons
670 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
671 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
672 }
fd9afd60 673 }
2d9c70ab 674 else if(TMath::Abs(sqrtS-2760) < 100.){
5d24ec95 675 AliInfo(" Extracting signal from SpectatorSignal/energy2760 ");
2d9c70ab 676 specSignalFile->cd("energy2760");
677 //
678 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
679 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
680 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
681 }
682 else if(SpecType == 2) { // --- Signal for projectile spectator protons
683 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
684 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
685 }
686 else if(SpecType == 3) { // --- Signal for target spectator neutrons
687 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
688 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
689 }
690 else if(SpecType == 4) { // --- Signal for target spectator protons
691 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
692 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
693 }
fd9afd60 694 }
695
83534754 696 if(!zdcSignal){
697 printf("\n No spectator signal available for ZDC digitization\n");
698 return;
699 }
700
8309c1ab 701 Int_t nentries = (Int_t) zdcSignal->GetEntries();
702
fd9afd60 703 Float_t *entry;
704 Int_t pl, i, k, iev=0, rnd[125], volume[2];
48642b09 705 for(pl=0;pl<125;pl++) rnd[pl] = 0;
8574b308 706 if(numEvents > 125) {
fea9b334 707 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
8309c1ab 708 numEvents = 125;
709 }
710 for(pl=0;pl<numEvents;pl++){
711 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223 712 if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab 713 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
714 }
715 // Sorting vector in ascending order with C function QSORT
716 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
717 do{
718 for(i=0; i<nentries; i++){
719 zdcSignal->GetEvent(i);
720 entry = zdcSignal->GetArgs();
721 if(entry[0] == rnd[iev]){
722 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
48642b09 723 //
fd9afd60 724 Float_t lightQ = entry[7];
725 Float_t lightC = entry[8];
726 //
acf9550c 727 if(volume[0] != 3) { // ZN or ZP
8309c1ab 728 pm[volume[0]-1][0] += lightC;
729 pm[volume[0]-1][volume[1]] += lightQ;
48642b09 730 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
731 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
732 }
733 else {
8574b308 734 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
acf9550c 735 else pm[2][2] += lightQ; // ZEM 2
48642b09 736 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
737 }
8309c1ab 738 }
739 else if(entry[0] > rnd[iev]){
740 iev++;
741 continue;
742 }
743 }
744 }while(iev<numEvents);
745
2d9c70ab 746 specSignalFile->Close();
747 delete specSignalFile;
8309c1ab 748}
749
750
751//_____________________________________________________________________________
752Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
753 Int_t Res) const
754{
48642b09 755 // Evaluation of the ADC channel corresponding to the light yield Light
8a2624cc 756 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
698e394d 757 // Ch. debug
758 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
759 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
7f73eb6b 760
8a2624cc 761 return vADCch;
48642b09 762}
8309c1ab 763
48642b09 764//_____________________________________________________________________________
765Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
766{
8a2624cc 767 // Returns a pedestal for detector det, PM quad, channel with res.
768 //
65b16e87 769 Float_t pedValue;
abf60186 770 // Normal run
771 if(fIsCalibration == 0){
c35ed519 772 Int_t index=0, kNch=24;
83347831 773 if(Quad!=5){
c35ed519 774 if(Det==1) index = Quad+kNch*Res; // ZNC
775 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
776 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
777 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
778 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
83347831 779 }
c35ed519 780 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
83347831 781 //
c35ed519 782 Float_t meanPed = fPedData->GetMeanPed(index);
783 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
65b16e87 784 pedValue = gRandom->Gaus(meanPed,pedWidth);
abf60186 785 //
58e12fee 786 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
65b16e87 787 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
abf60186 788 */
789 }
7f73eb6b 790 // To create calibration object
83347831 791 else{
65b16e87 792 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
793 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
83347831 794 }
dbc8d7fc 795
65b16e87 796 return (Int_t) pedValue;
8309c1ab 797}
798
799//_____________________________________________________________________________
78d18275 800AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab 801{
8309c1ab 802
78d18275 803 Bool_t deleteManager = kFALSE;
48642b09 804
78d18275 805 AliCDBManager *manager = AliCDBManager::Instance();
806 AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09 807
78d18275 808 if(!defstorage || !(defstorage->Contains("ZDC"))){
809 AliWarning("No default storage set or default storage doesn't contain ZDC!");
810 manager->SetDefaultStorage(uri);
811 deleteManager = kTRUE;
812 }
813
814 AliCDBStorage *storage = manager->GetDefaultStorage();
815
816 if(deleteManager){
817 AliCDBManager::Instance()->UnsetDefaultStorage();
818 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
819 }
820
821 return storage;
822}
48642b09 823
78d18275 824//_____________________________________________________________________________
6024ec85 825AliZDCPedestals* AliZDCDigitizer::GetPedData() const
826{
827
828 // Getting pedestal calibration object for ZDC set
829
830 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
831 if(!entry) AliFatal("No calibration data loaded!");
832
833 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
834 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
835
836 return calibdata;
837}
f91d1e35 838