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[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
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 "AliLog.h"
34#include "AliRun.h"
35#include "AliHeader.h"
36#include "AliGenHijingEventHeader.h"
07e38cef 37#include "AliGenCocktailEventHeader.h"
f21fc003 38#include "AliDigitizationInput.h"
8309c1ab 39#include "AliRunLoader.h"
c93255fe 40#include "AliLoader.h"
12434381 41#include "AliGRPObject.h"
78d18275 42#include "AliCDBManager.h"
48642b09 43#include "AliCDBEntry.h"
8309c1ab 44#include "AliZDCSDigit.h"
45#include "AliZDCDigit.h"
46#include "AliZDCFragment.h"
a18a0543 47#include "AliZDCv3.h"
8309c1ab 48#include "AliZDCDigitizer.h"
8a2624cc 49
50class AliCDBStorage;
6024ec85 51class AliZDCPedestals;
8309c1ab 52
53ClassImp(AliZDCDigitizer)
54
55
56//____________________________________________________________________________
a718c993 57AliZDCDigitizer::AliZDCDigitizer() :
58 fIsCalibration(0),
fd9afd60 59 fIsSignalInADCGate(kFALSE),
60 fFracLostSignal(0.),
a718c993 61 fPedData(0),
2d9c70ab 62 fSpectators2Track(kFALSE),
f2e2aa97 63 fBeamEnergy(0.),
64 fIspASystem(kFALSE)
8309c1ab 65{
698e394d 66 // Default constructor
83534754 67 for(Int_t i=0; i<2; i++) fADCRes[i]=0.;
8309c1ab 68}
69
70//____________________________________________________________________________
f21fc003 71AliZDCDigitizer::AliZDCDigitizer(AliDigitizationInput* digInput):
72 AliDigitizer(digInput),
a718c993 73 fIsCalibration(0), //By default the simulation doesn't create calib. data
fd9afd60 74 fIsSignalInADCGate(kFALSE),
75 fFracLostSignal(0.),
a718c993 76 fPedData(GetPedData()),
2d9c70ab 77 fSpectators2Track(kFALSE),
f2e2aa97 78 fBeamEnergy(0.),
79 fIspASystem(kFALSE)
8309c1ab 80{
78d18275 81 // Get calibration data
d27e20dd 82 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
edb4e893 83 for(Int_t i=0; i<5; i++){
698e394d 84 for(Int_t j=0; j<5; j++)
85 fPMGain[i][j] = 0.;
86 }
8309c1ab 87}
88
89//____________________________________________________________________________
90AliZDCDigitizer::~AliZDCDigitizer()
91{
92// Destructor
a718c993 93// Not implemented
8309c1ab 94}
95
96
cc2abffd 97//____________________________________________________________________________
98AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
a718c993 99 AliDigitizer(),
100 fIsCalibration(digitizer.fIsCalibration),
fd9afd60 101 fIsSignalInADCGate(digitizer.fIsSignalInADCGate),
102 fFracLostSignal(digitizer.fFracLostSignal),
a718c993 103 fPedData(digitizer.fPedData),
2d9c70ab 104 fSpectators2Track(digitizer.fSpectators2Track),
f2e2aa97 105 fBeamEnergy(digitizer.fBeamEnergy),
106 fIspASystem(digitizer.fIspASystem)
cc2abffd 107{
108 // Copy constructor
109
edb4e893 110 for(Int_t i=0; i<5; i++){
cc2abffd 111 for(Int_t j=0; j<5; j++){
112 fPMGain[i][j] = digitizer.fPMGain[i][j];
113 }
114 }
115 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
cc2abffd 116
12434381 117
cc2abffd 118}
119
8309c1ab 120//____________________________________________________________________________
121Bool_t AliZDCDigitizer::Init()
122{
48642b09 123 // Initialize the digitizer
12434381 124
125 AliCDBEntry* entry = AliCDBManager::Instance()->Get("GRP/GRP/Data");
83534754 126 if(!entry) AliFatal("No calibration data loaded!");
12434381 127 AliGRPObject* grpData = 0x0;
128 if(entry){
129 TMap* m = dynamic_cast<TMap*>(entry->GetObject()); // old GRP entry
130 if(m){
131 //m->Print();
132 grpData = new AliGRPObject();
133 grpData->ReadValuesFromMap(m);
134 }
135 else{
136 grpData = dynamic_cast<AliGRPObject*>(entry->GetObject()); // new GRP entry
137 }
138 entry->SetOwner(0);
139 AliCDBManager::Instance()->UnloadFromCache("GRP/GRP/Data");
140 }
83534754 141 if(!grpData){
142 AliError("No GRP entry found in OCDB! \n ");
143 return kFALSE;
144 }
12434381 145
146 TString beamType = grpData->GetBeamType();
147 if(beamType==AliGRPObject::GetInvalidString()){
148 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
149 }
150
2d9c70ab 151 fBeamEnergy = grpData->GetBeamEnergy();
8fced614 152 if(!fIspASystem) printf("\t AliZDCDigitizer -> beam energy = %f GeV\n", fBeamEnergy);
2d9c70ab 153 if(fBeamEnergy==AliGRPObject::GetInvalidFloat()){
12434381 154 AliWarning("GRP/GRP/Data entry: missing value for the beam energy ! Using 0.");
155 AliError("\t UNKNOWN beam type from GRP obj -> PMT gains not set in ZDC digitizer!!!\n");
2d9c70ab 156 fBeamEnergy = 0.;
12434381 157 }
b553507a 158
07e38cef 159 if((((beamType.CompareTo("P-P")) == 0) || ((beamType.CompareTo("p-p")) == 0)) && (!fIspASystem)){
f2e2aa97 160 // PTM gains rescaled to beam energy for p-p
a66caee1 161 // New correction coefficients for PMT gains needed
162 // to reproduce experimental spectra (from Grazia Jul 2010)
2d9c70ab 163 if(fBeamEnergy != 0){
4df5e18f 164 for(Int_t j = 0; j < 5; j++){
165 fPMGain[0][j] = 1.515831*(661.444/fBeamEnergy+0.000740671)*10000000;
166 fPMGain[1][j] = 0.674234*(864.350/fBeamEnergy+0.00234375)*10000000;
167 fPMGain[3][j] = 1.350938*(661.444/fBeamEnergy+0.000740671)*10000000;
168 fPMGain[4][j] = 0.678597*(864.350/fBeamEnergy+0.00234375)*10000000;
169 }
170 fPMGain[2][1] = 0.869654*(1.32312-0.000101515*fBeamEnergy)*10000000;
171 fPMGain[2][2] = 1.030883*(1.32312-0.000101515*fBeamEnergy)*10000000;
dcb6916a 172 //
8fced614 173 printf("\n ZDC PMT gains for p-p @ %1.0f+%1.0f GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
a1f7efec 174 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
12434381 175 }
f2e2aa97 176 else{ // for RELDIS simulation @ sqrt(s_{NN}) = 2.76 TeV
dcb6916a 177 Float_t scalGainFactor = 0.5;
a736fd93 178 for(Int_t j = 0; j < 5; j++){
dcf187b9 179 fPMGain[0][j] = 50000./scalGainFactor; // ZNC
180 fPMGain[1][j] = 100000./scalGainFactor; // ZPC
f2e2aa97 181 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
dcf187b9 182 fPMGain[3][j] = 50000./scalGainFactor; // ZNA
183 fPMGain[4][j] = 100000./scalGainFactor; // ZPA
a736fd93 184 }
dcb6916a 185 //
8fced614 186 printf("\n ZDC PMT gains for RELDIS simulation: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
a1f7efec 187 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
a736fd93 188 }
12434381 189 }
96221dca 190 else if((beamType.CompareTo("A-A")) == 0 && !fIspASystem){
2d9c70ab 191 // PTM gains for Pb-Pb @ 2.7+2.7 A TeV ***************
192 // rescaled for Pb-Pb @ 1.38+1.38 A TeV ***************
a66caee1 193 // Values corrected after 2010 Pb-Pb data taking (7/2/2011 - Ch.)
194 // Experimental data compared to EMD simulation for single nucleon peaks:
195 // ZN gains must be divided by 4, ZP gains by 10!
2d9c70ab 196 Float_t scalGainFactor = fBeamEnergy/2760.;
12434381 197 for(Int_t j = 0; j < 5; j++){
dcb6916a 198 fPMGain[0][j] = 50000./(4*scalGainFactor); // ZNC
199 fPMGain[1][j] = 100000./(5*scalGainFactor); // ZPC
200 fPMGain[2][j] = 100000./scalGainFactor; // ZEM
201 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA
202 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA
12434381 203 }
8fced614 204 printf("\n ZDC PMT gains for Pb-Pb @ %1.0f+%1.0f A GeV: ZN(%1.0f), ZP(%1.0f), ZEM(%1.0f)\n",
a1f7efec 205 fBeamEnergy, fBeamEnergy, fPMGain[0][0], fPMGain[1][0], fPMGain[2][1]);
12434381 206 }
f2e2aa97 207
208 if(fIspASystem){
96221dca 209 // PTM gains for Pb-Pb @ 1.38+1.38 A TeV on side A
210 // PTM gains rescaled to beam energy for p-p on side C
211 // WARNING! Energies are set by hand for 2011 pA RUN!!!
212 Float_t scalGainFactor = 0.5;
f2e2aa97 213 Float_t fpBeamEnergy = 3500.;
214
215 for(Int_t j = 0; j < 5; j++){
96221dca 216 fPMGain[0][j] = 1.350938*(661.444/fpBeamEnergy+0.000740671)*10000000; //ZNC (p)
217 fPMGain[1][j] = 0.678597*(864.350/fpBeamEnergy+0.00234375)*10000000; //ZPC (p)
218 fPMGain[2][j] = 100000./scalGainFactor; // ZEM (Pb)
219 fPMGain[3][j] = 50000./(4*scalGainFactor); // ZNA (Pb)
220 fPMGain[4][j] = 100000./(5*scalGainFactor); // ZPA (Pb)
f2e2aa97 221 }
8fced614 222 printf("\n ZDC PMT gains for p-Pb: ZNC(%1.0f), ZPC(%1.0f), ZEM(%1.0f), ZNA(%1.0f) ZPA(%1.0f)\n",
a1f7efec 223 fPMGain[0][0], fPMGain[1][0], fPMGain[2][1], fPMGain[3][0], fPMGain[4][0]);
f2e2aa97 224 }
698e394d 225
226 // ADC Caen V965
7f73eb6b 227 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
228 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
8309c1ab 229
230 return kTRUE;
231}
232
233//____________________________________________________________________________
f21fc003 234void AliZDCDigitizer::Digitize(Option_t* /*option*/)
8309c1ab 235{
48642b09 236 // Execute digitization
8309c1ab 237
d79f8d50 238 // ------------------------------------------------------------
f91d1e35 239 // !!! 2nd ZDC set added
240 // *** 1st 3 arrays are digits from REAL (simulated) hits
241 // *** last 2 are copied from simulated digits
fd9afd60 242 // --- pm[0][...] = light in ZN side C [C, Q1, Q2, Q3, Q4]
243 // --- pm[1][...] = light in ZP side C [C, Q1, Q2, Q3, Q4]
48642b09 244 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
fd9afd60 245 // --- pm[3][...] = light in ZN side A [C, Q1, Q2, Q3, Q4] ->NEW!
246 // --- pm[4][...] = light in ZP side A [C, Q1, Q2, Q3, Q4] ->NEW!
d79f8d50 247 // ------------------------------------------------------------
248 Float_t pm[5][5];
8574b308 249 for(Int_t iSector1=0; iSector1<5; iSector1++)
250 for(Int_t iSector2=0; iSector2<5; iSector2++){
8309c1ab 251 pm[iSector1][iSector2] = 0;
252 }
d79f8d50 253
254 // ------------------------------------------------------------
255 // ### Out of time ADC added (22 channels)
256 // --- same codification as for signal PTMs (see above)
257 // ------------------------------------------------------------
258 Float_t pmoot[5][5];
8574b308 259 for(Int_t iSector1=0; iSector1<5; iSector1++)
260 for(Int_t iSector2=0; iSector2<5; iSector2++){
d79f8d50 261 pmoot[iSector1][iSector2] = 0;
262 }
8309c1ab 263
264 // impact parameter and number of spectators
131b5d31 265 Float_t impPar = 0;
fd9afd60 266 Int_t specNTarg = 0, specPTarg = 0;
267 Int_t specNProj = 0, specPProj = 0;
a18a0543 268 Float_t signalTime0 = 0.;
8309c1ab 269
270 // loop over input streams
f21fc003 271 for(Int_t iInput = 0; iInput<fDigInput->GetNinputs(); iInput++){
8309c1ab 272
273 // get run loader and ZDC loader
274 AliRunLoader* runLoader =
f21fc003 275 AliRunLoader::GetRunLoader(fDigInput->GetInputFolderName(iInput));
8309c1ab 276 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 277 if(!loader) continue;
8309c1ab 278
279 // load sdigits
280 loader->LoadSDigits();
281 TTree* treeS = loader->TreeS();
8574b308 282 if(!treeS) continue;
8309c1ab 283 AliZDCSDigit sdigit;
284 AliZDCSDigit* psdigit = &sdigit;
285 treeS->SetBranchAddress("ZDC", &psdigit);
286
287 // loop over sdigits
8574b308 288 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
8309c1ab 289 treeS->GetEntry(iSDigit);
7f73eb6b 290 //
8574b308 291 if(!psdigit) continue;
292 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
8309c1ab 293 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
294 sdigit.GetSector(0), sdigit.GetSector(1)));
295 continue;
296 }
fd9afd60 297 // Checking if signal is inside ADC gate
298 if(iSDigit==0) signalTime0 = sdigit.GetTrackTime();
299 else{
300 // Assuming a signal lenght of 20 ns, signal is in gate if
301 // signal ENDS in signalTime0+50. -> sdigit.GetTrackTime()+20<=signalTime0+50.
302 if(sdigit.GetTrackTime()<=signalTime0+30.) fIsSignalInADCGate = kTRUE;
303 if(sdigit.GetTrackTime()>signalTime0+30.){
304 fIsSignalInADCGate = kFALSE;
305 // Vedi quaderno per spiegazione approx. usata
306 // nel calcolo della fraz. di segnale perso
307 fFracLostSignal = (sdigit.GetTrackTime()-30)*(sdigit.GetTrackTime()-30)/280.;
308 }
309 }
698e394d 310
fd9afd60 311 Float_t sdSignal = sdigit.GetLightPM();
312 if(fIsSignalInADCGate == kFALSE){
7e858b1d 313 AliDebug(2,Form("\t Signal time %f -> fraction %f of ZDC signal for det.(%d, %d) out of ADC gate\n",
0fba8107 314 sdigit.GetTrackTime(),fFracLostSignal,sdigit.GetSector(0),sdigit.GetSector(1)));
fd9afd60 315 sdSignal = (1-fFracLostSignal)*sdSignal;
316 }
317
48642b09 318 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
698e394d 319 //Ch. debug
320 /*printf("\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
48642b09 321 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
698e394d 322 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]);
878fa0b3 323 */
fd9afd60 324
8309c1ab 325 }
326
8309c1ab 327 loader->UnloadSDigits();
328
329 // get the impact parameter and the number of spectators in case of hijing
8574b308 330 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
d3b3a3b2 331 AliHeader* header = runLoader->GetHeader();
8574b308 332 if(!header) continue;
8309c1ab 333 AliGenEventHeader* genHeader = header->GenEventHeader();
8574b308 334 if(!genHeader) continue;
07e38cef 335 AliGenHijingEventHeader *hijingHeader = 0;
336 if(genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (genHeader);
337 else if(genHeader->InheritsFrom(AliGenCocktailEventHeader::Class())){
338 TList* listOfHeaders = ((AliGenCocktailEventHeader*) genHeader)->GetHeaders();
339 hijingHeader = dynamic_cast <AliGenHijingEventHeader*> (listOfHeaders->FindObject("Hijing"));
340 }
341 if(!hijingHeader) continue;
342
8fced614 343 if(fSpectators2Track==kTRUE){
344 impPar = hijingHeader->ImpactParameter();
07e38cef 345 specNProj = hijingHeader->ProjSpectatorsn();
346 specPProj = hijingHeader->ProjSpectatorsp();
347 specNTarg = hijingHeader->TargSpectatorsn();
348 specPTarg = hijingHeader->TargSpectatorsp();
349 printf("\n\t AliZDCDigitizer: b = %1.2f fm\n"
8fced614 350 " \t PROJECTILE: #spectator n %d, #spectator p %d\n"
351 " \t TARGET: #spectator n %d, #spectator p %d\n",
07e38cef 352 impPar, specNProj, specPProj, specNTarg, specPTarg);
a18a0543 353 }
354
07e38cef 355 //}
8309c1ab 356
fd9afd60 357 // Applying fragmentation algorithm and adding spectator signal
07e38cef 358 //if((fSpectators2Track==kTRUE) && impPar && (fIspASystem==kFALSE) {
8fced614 359 Int_t freeSpecNProj=0, freeSpecPProj=0;
360 if(specNProj!=0 || specPProj!=0) Fragmentation(impPar, specNProj, specPProj, freeSpecNProj, freeSpecPProj);
361 Int_t freeSpecNTarg=0, freeSpecPTarg=0;
362 if(specNTarg!=0 || specPTarg!=0) Fragmentation(impPar, specNTarg, specPTarg, freeSpecNTarg, freeSpecPTarg);
363 if(freeSpecNProj!=0) SpectatorSignal(1, freeSpecNProj, pm);
364 if(freeSpecPProj!=0) SpectatorSignal(2, freeSpecPProj, pm);
365 printf("\t AliZDCDigitizer -> Adding spectator signal for PROJECTILE: %d free n and %d free p\n",freeSpecNProj,freeSpecPProj);
366 if(freeSpecNTarg!=0) SpectatorSignal(3, freeSpecNTarg, pm);
367 if(freeSpecPTarg!=0) SpectatorSignal(4, freeSpecPTarg, pm);
368 printf("\t AliZDCDigitizer -> Adding spectator signal for TARGET: %d free n and %d free p\n",freeSpecNTarg,freeSpecPTarg);
8309c1ab 369 }
370
8a2624cc 371
8309c1ab 372 // get the output run loader and loader
373 AliRunLoader* runLoader =
f21fc003 374 AliRunLoader::GetRunLoader(fDigInput->GetOutputFolderName());
8309c1ab 375 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 376 if(!loader) {
8309c1ab 377 AliError("no ZDC loader found");
378 return;
379 }
380
381 // create the output tree
382 const char* mode = "update";
8574b308 383 if(runLoader->GetEventNumber() == 0) mode = "recreate";
8309c1ab 384 loader->LoadDigits(mode);
385 loader->MakeTree("D");
386 TTree* treeD = loader->TreeD();
387 AliZDCDigit digit;
388 AliZDCDigit* pdigit = &digit;
389 const Int_t kBufferSize = 4000;
390 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
391
392 // Create digits
80e87581 393 Int_t sector[2];
394 Int_t digi[2], digioot[2];
395 for(sector[0]=1; sector[0]<6; sector[0]++){
abf60186 396 for(sector[1]=0; sector[1]<5; sector[1]++){
397 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 398 for(Int_t res=0; res<2; res++){
abf60186 399 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09 400 + Pedestal(sector[0], sector[1], res);
7f73eb6b 401 }
abf60186 402 new(pdigit) AliZDCDigit(sector, digi);
8309c1ab 403 treeD->Fill();
698e394d 404
405 //Ch. debug
406 //printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
407 // sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
408
8309c1ab 409 }
83347831 410 } // Loop over detector
411 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
412 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
413 Int_t sectorRef[2];
414 sectorRef[1] = 5;
9d38ced8 415 Int_t sigRef[2];
80e87581 416 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
9d38ced8 417 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
80e87581 418 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
9d38ced8 419 //
83347831 420 for(Int_t iref=0; iref<2; iref++){
421 sectorRef[0] = 3*iref+1;
422 for(Int_t res=0; res<2; res++){
423 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
424 }
83347831 425 new(pdigit) AliZDCDigit(sectorRef, sigRef);
426 treeD->Fill();
698e394d 427
428 //Ch. debug
429 //printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
430 // sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
abf60186 431 }
d79f8d50 432 //
433 // --- Adding digits for out-of-time channels after signal digits
80e87581 434 for(sector[0]=1; sector[0]<6; sector[0]++){
d79f8d50 435 for(sector[1]=0; sector[1]<5; sector[1]++){
436 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 437 for(Int_t res=0; res<2; res++){
d79f8d50 438 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
439 }
d79f8d50 440 new(pdigit) AliZDCDigit(sector, digioot);
441 treeD->Fill();
698e394d 442
443 //Ch. debug
444 //printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
445 // sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
d79f8d50 446 }
447 }
83347831 448 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
449 Int_t sigRefoot[2];
450 for(Int_t iref=0; iref<2; iref++){
451 sectorRef[0] = 3*iref+1;
452 for(Int_t res=0; res<2; res++){
453 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
454 }
83347831 455 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
456 treeD->Fill();
698e394d 457 //Ch. debug
458 //printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
459 // sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
460
83347831 461 }
462 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
463
8309c1ab 464 // write the output tree
465 loader->WriteDigits("OVERWRITE");
466 loader->UnloadDigits();
467}
468
469
470//_____________________________________________________________________________
471void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
472 Int_t &freeSpecN, Int_t &freeSpecP) const
473{
474// simulate fragmentation of spectators
475
8309c1ab 476 AliZDCFragment frag(impPar);
8309c1ab 477
478 // Fragments generation
92339a90 479 frag.GenerateIMF();
480 Int_t nAlpha = frag.GetNalpha();
8309c1ab 481
482 // Attach neutrons
98711e01 483 frag.AttachNeutrons();
92339a90 484 Int_t ztot = frag.GetZtot();
485 Int_t ntot = frag.GetNtot();
98711e01 486
487 // Removing fragments and alpha pcs
8309c1ab 488 freeSpecN = specN-ntot-2*nAlpha;
489 freeSpecP = specP-ztot-2*nAlpha;
98711e01 490
3848c666 491 // Removing deuterons
a0607c1f 492 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
3848c666 493 freeSpecN -= ndeu;
98711e01 494 freeSpecP -= ndeu;
3848c666 495 //
8309c1ab 496 if(freeSpecN<0) freeSpecN=0;
497 if(freeSpecP<0) freeSpecP=0;
498 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
499}
500
501//_____________________________________________________________________________
502void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
fd9afd60 503 Float_t pm[5][5]) const
8309c1ab 504{
505// add signal of the spectators
fd9afd60 506
2d9c70ab 507 TFile *specSignalFile = TFile::Open("$ALICE_ROOT/ZDC/SpectatorSignal.root");
508 if(!specSignalFile || !specSignalFile->IsOpen()) {
509 AliError((" Opening file $ALICE_ROOT/ZDC/SpectatorSignal.root failed\n"));
510 return;
8309c1ab 511 }
2d9c70ab 512
e7eabc21 513 TNtuple* zdcSignal=0x0;
2d9c70ab 514
515 Float_t sqrtS = 2*fBeamEnergy;
07e38cef 516 if(fIspASystem) sqrtS = 2760.;
2d9c70ab 517 //
518 if(TMath::Abs(sqrtS-5500) < 100.){
519 specSignalFile->cd("energy5500");
520 //
521 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
522 specSignalFile->GetObject("energy5500/ZNCSignal;1",zdcSignal);
523 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
524 }
525 else if(SpecType == 2) { // --- Signal for projectile spectator protons
526 specSignalFile->GetObject("energy5500/ZPCSignal;1",zdcSignal);
527 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
528 }
529 else if(SpecType == 3) { // --- Signal for target spectator neutrons
530 specSignalFile->GetObject("energy5500/ZNASignal;1",zdcSignal);
531 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
532 }
533 else if(SpecType == 4) { // --- Signal for target spectator protons
534 specSignalFile->GetObject("energy5500/ZPASignal;1",zdcSignal);
535 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
536 }
fd9afd60 537 }
2d9c70ab 538 else if(TMath::Abs(sqrtS-2760) < 100.){
539 specSignalFile->cd("energy2760");
540 //
541 if(SpecType == 1) { // --- Signal for projectile spectator neutrons
542 specSignalFile->GetObject("energy2760/ZNCSignal;1",zdcSignal);
543 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNCSignal from SpectatorSignal.root file");
544 }
545 else if(SpecType == 2) { // --- Signal for projectile spectator protons
546 specSignalFile->GetObject("energy2760/ZPCSignal;1",zdcSignal);
547 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPCSignal from SpectatorSignal.root file");
548 }
549 else if(SpecType == 3) { // --- Signal for target spectator neutrons
550 specSignalFile->GetObject("energy2760/ZNASignal;1",zdcSignal);
551 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZNASignal from SpectatorSignal.root file");
552 }
553 else if(SpecType == 4) { // --- Signal for target spectator protons
554 specSignalFile->GetObject("energy2760/ZPASignal;1",zdcSignal);
555 if(!zdcSignal) AliError(" PROBLEM!!! Can't retrieve ZPASignal from SpectatorSignal.root file");
556 }
fd9afd60 557 }
558
83534754 559 if(!zdcSignal){
560 printf("\n No spectator signal available for ZDC digitization\n");
561 return;
562 }
563
8309c1ab 564 Int_t nentries = (Int_t) zdcSignal->GetEntries();
565
fd9afd60 566 Float_t *entry;
567 Int_t pl, i, k, iev=0, rnd[125], volume[2];
48642b09 568 for(pl=0;pl<125;pl++) rnd[pl] = 0;
8574b308 569 if(numEvents > 125) {
fea9b334 570 AliDebug(2,Form("numEvents (%d) is larger than 125", numEvents));
8309c1ab 571 numEvents = 125;
572 }
573 for(pl=0;pl<numEvents;pl++){
574 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223 575 if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab 576 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
577 }
578 // Sorting vector in ascending order with C function QSORT
579 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
580 do{
581 for(i=0; i<nentries; i++){
582 zdcSignal->GetEvent(i);
583 entry = zdcSignal->GetArgs();
584 if(entry[0] == rnd[iev]){
585 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
48642b09 586 //
fd9afd60 587 Float_t lightQ = entry[7];
588 Float_t lightC = entry[8];
589 //
acf9550c 590 if(volume[0] != 3) { // ZN or ZP
8309c1ab 591 pm[volume[0]-1][0] += lightC;
592 pm[volume[0]-1][volume[1]] += lightQ;
48642b09 593 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
594 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
595 }
596 else {
8574b308 597 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
acf9550c 598 else pm[2][2] += lightQ; // ZEM 2
48642b09 599 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
600 }
8309c1ab 601 }
602 else if(entry[0] > rnd[iev]){
603 iev++;
604 continue;
605 }
606 }
607 }while(iev<numEvents);
608
2d9c70ab 609 specSignalFile->Close();
610 delete specSignalFile;
8309c1ab 611}
612
613
614//_____________________________________________________________________________
615Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
616 Int_t Res) const
617{
48642b09 618 // Evaluation of the ADC channel corresponding to the light yield Light
8a2624cc 619 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
698e394d 620 // Ch. debug
621 //printf("\t Phe2ADCch -> det %d quad %d - PMGain[%d][%d] %1.0f phe %1.2f ADC %d\n",
622 // Det,Quad,Det-1,Quad,fPMGain[Det-1][Quad],Light,vADCch);
7f73eb6b 623
8a2624cc 624 return vADCch;
48642b09 625}
8309c1ab 626
48642b09 627//_____________________________________________________________________________
628Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
629{
8a2624cc 630 // Returns a pedestal for detector det, PM quad, channel with res.
631 //
65b16e87 632 Float_t pedValue;
abf60186 633 // Normal run
634 if(fIsCalibration == 0){
c35ed519 635 Int_t index=0, kNch=24;
83347831 636 if(Quad!=5){
c35ed519 637 if(Det==1) index = Quad+kNch*Res; // ZNC
638 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
639 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
640 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
641 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
83347831 642 }
c35ed519 643 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
83347831 644 //
c35ed519 645 Float_t meanPed = fPedData->GetMeanPed(index);
646 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
65b16e87 647 pedValue = gRandom->Gaus(meanPed,pedWidth);
abf60186 648 //
58e12fee 649 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
65b16e87 650 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
abf60186 651 */
652 }
7f73eb6b 653 // To create calibration object
83347831 654 else{
65b16e87 655 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
656 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
83347831 657 }
dbc8d7fc 658
65b16e87 659 return (Int_t) pedValue;
8309c1ab 660}
661
662//_____________________________________________________________________________
78d18275 663AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab 664{
8309c1ab 665
78d18275 666 Bool_t deleteManager = kFALSE;
48642b09 667
78d18275 668 AliCDBManager *manager = AliCDBManager::Instance();
669 AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09 670
78d18275 671 if(!defstorage || !(defstorage->Contains("ZDC"))){
672 AliWarning("No default storage set or default storage doesn't contain ZDC!");
673 manager->SetDefaultStorage(uri);
674 deleteManager = kTRUE;
675 }
676
677 AliCDBStorage *storage = manager->GetDefaultStorage();
678
679 if(deleteManager){
680 AliCDBManager::Instance()->UnsetDefaultStorage();
681 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
682 }
683
684 return storage;
685}
48642b09 686
78d18275 687//_____________________________________________________________________________
6024ec85 688AliZDCPedestals* AliZDCDigitizer::GetPedData() const
689{
690
691 // Getting pedestal calibration object for ZDC set
692
693 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
694 if(!entry) AliFatal("No calibration data loaded!");
695
696 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
697 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
698
699 return calibdata;
700}
f91d1e35 701