AliZDCRecoParam class implemented
[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"
37#include "AliRunDigitizer.h"
38#include "AliRunLoader.h"
78d18275 39#include "AliCDBManager.h"
48642b09 40#include "AliCDBEntry.h"
8309c1ab 41#include "AliZDCSDigit.h"
42#include "AliZDCDigit.h"
43#include "AliZDCFragment.h"
44#include "AliZDCDigitizer.h"
8a2624cc 45
46class AliCDBStorage;
6024ec85 47class AliZDCPedestals;
48class AliZDCCalib;
8309c1ab 49
50ClassImp(AliZDCDigitizer)
51
52
53//____________________________________________________________________________
a718c993 54AliZDCDigitizer::AliZDCDigitizer() :
55 fIsCalibration(0),
56 fPedData(0),
7bff3766 57 fCalibData(0)
8309c1ab 58{
59// Default constructor
60
61}
62
63//____________________________________________________________________________
64AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager):
a718c993 65 AliDigitizer(manager),
66 fIsCalibration(0), //By default the simulation doesn't create calib. data
67 fPedData(GetPedData()),
7bff3766 68 fCalibData(GetCalibData())
8309c1ab 69{
78d18275 70 // Get calibration data
d27e20dd 71 if(fIsCalibration!=0) printf("\n\t AliZDCDigitizer -> Creating calibration data (pedestals)\n");
78d18275 72
8309c1ab 73}
74
75//____________________________________________________________________________
76AliZDCDigitizer::~AliZDCDigitizer()
77{
78// Destructor
a718c993 79// Not implemented
8309c1ab 80}
81
82
83//____________________________________________________________________________
cc2abffd 84AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer):
a718c993 85 AliDigitizer(),
86 fIsCalibration(digitizer.fIsCalibration),
87 fPedData(digitizer.fPedData),
7bff3766 88 fCalibData(digitizer.fCalibData)
cc2abffd 89{
90 // Copy constructor
91
92 for(Int_t i=0; i<6; i++){
93 for(Int_t j=0; j<5; j++){
94 fPMGain[i][j] = digitizer.fPMGain[i][j];
95 }
96 }
97 for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i];
cc2abffd 98
99}
100
101//____________________________________________________________________________
8309c1ab 102Bool_t AliZDCDigitizer::Init()
103{
48642b09 104 // Initialize the digitizer
105 // NB -> PM gain vs. HV & ADC resolutions will move to DCDB ***************
7f73eb6b 106 for(Int_t j = 0; j < 5; j++){
107 fPMGain[0][j] = 50000.;
108 fPMGain[1][j] = 100000.;
109 fPMGain[2][j] = 100000.;
a017f01b 110 fPMGain[3][j] = 50000.;
111 fPMGain[4][j] = 100000.;
112 fPMGain[5][j] = 100000.;
7f73eb6b 113 }
114 // ADC Caen V965
115 fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh
116 fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh
8309c1ab 117
118 return kTRUE;
119}
120
121//____________________________________________________________________________
122void AliZDCDigitizer::Exec(Option_t* /*option*/)
123{
48642b09 124 // Execute digitization
8309c1ab 125
d79f8d50 126 // ------------------------------------------------------------
83347831 127 // !!! 2nd ZDC set added
7f73eb6b 128 // *** 1st 3 arrays are digits from REAL (simulated) hits
129 // *** last 2 are copied from simulated digits
130 // --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4]
131 // --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4]
48642b09 132 // --- pm[2][...] = light in ZEM [x, 1, 2, x, x]
7f73eb6b 133 // --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW!
134 // --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW!
d79f8d50 135 // ------------------------------------------------------------
136 Float_t pm[5][5];
8574b308 137 for(Int_t iSector1=0; iSector1<5; iSector1++)
138 for(Int_t iSector2=0; iSector2<5; iSector2++){
8309c1ab 139 pm[iSector1][iSector2] = 0;
140 }
d79f8d50 141
142 // ------------------------------------------------------------
143 // ### Out of time ADC added (22 channels)
144 // --- same codification as for signal PTMs (see above)
145 // ------------------------------------------------------------
146 Float_t pmoot[5][5];
8574b308 147 for(Int_t iSector1=0; iSector1<5; iSector1++)
148 for(Int_t iSector2=0; iSector2<5; iSector2++){
d79f8d50 149 pmoot[iSector1][iSector2] = 0;
150 }
8309c1ab 151
152 // impact parameter and number of spectators
153 Float_t impPar = -1;
154 Int_t specN = 0;
155 Int_t specP = 0;
156
157 // loop over input streams
8574b308 158 for(Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){
8309c1ab 159
160 // get run loader and ZDC loader
161 AliRunLoader* runLoader =
162 AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput));
163 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 164 if(!loader) continue;
8309c1ab 165
166 // load sdigits
167 loader->LoadSDigits();
168 TTree* treeS = loader->TreeS();
8574b308 169 if(!treeS) continue;
8309c1ab 170 AliZDCSDigit sdigit;
171 AliZDCSDigit* psdigit = &sdigit;
172 treeS->SetBranchAddress("ZDC", &psdigit);
173
174 // loop over sdigits
8574b308 175 for(Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){
8309c1ab 176 treeS->GetEntry(iSDigit);
7f73eb6b 177 //
8574b308 178 if(!psdigit) continue;
179 if((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){
8309c1ab 180 AliError(Form("\nsector[0] = %d, sector[1] = %d\n",
181 sdigit.GetSector(0), sdigit.GetSector(1)));
182 continue;
183 }
7f73eb6b 184 //
48642b09 185 pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM();
7f73eb6b 186 /*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n",
48642b09 187 sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1,
188 sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging!
abf60186 189 */
8309c1ab 190 }
191
8309c1ab 192 loader->UnloadSDigits();
193
194 // get the impact parameter and the number of spectators in case of hijing
8574b308 195 if(!runLoader->GetAliRun()) runLoader->LoadgAlice();
8309c1ab 196 AliHeader* header = runLoader->GetAliRun()->GetHeader();
8574b308 197 if(!header) continue;
8309c1ab 198 AliGenEventHeader* genHeader = header->GenEventHeader();
8574b308 199 if(!genHeader) continue;
200 if(!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue;
8309c1ab 201 impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter();
85a96223 202 //
203 specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn();
204 specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp();
78d18275 205 AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n",
8309c1ab 206 impPar, specN, specP));
d27e20dd 207 printf("\n\t AliZDCDigitizer -> b = %f fm, # generated spectator n = %d,"
208 " # generated spectator p = %d\n", impPar, specN, specP);
8309c1ab 209 }
210
211 // add spectators
8574b308 212 if(impPar >= 0) {
8309c1ab 213 Int_t freeSpecN, freeSpecP;
214 Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP);
d27e20dd 215 printf("\n\t AliZDCDigitizer -> Adding signal for %d free spectator n\n",freeSpecN);
8309c1ab 216 SpectatorSignal(1, freeSpecN, pm);
d27e20dd 217 printf("\t AliZDCDigitizer -> Adding signal for %d free spectator p\n\n",freeSpecP);
8309c1ab 218 SpectatorSignal(2, freeSpecP, pm);
219 }
220
8a2624cc 221
8309c1ab 222 // get the output run loader and loader
223 AliRunLoader* runLoader =
224 AliRunLoader::GetRunLoader(fManager->GetOutputFolderName());
225 AliLoader* loader = runLoader->GetLoader("ZDCLoader");
8574b308 226 if(!loader) {
8309c1ab 227 AliError("no ZDC loader found");
228 return;
229 }
230
231 // create the output tree
232 const char* mode = "update";
8574b308 233 if(runLoader->GetEventNumber() == 0) mode = "recreate";
8309c1ab 234 loader->LoadDigits(mode);
235 loader->MakeTree("D");
236 TTree* treeD = loader->TreeD();
237 AliZDCDigit digit;
238 AliZDCDigit* pdigit = &digit;
239 const Int_t kBufferSize = 4000;
240 treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize);
241
242 // Create digits
80e87581 243 Int_t sector[2];
244 Int_t digi[2], digioot[2];
245 for(sector[0]=1; sector[0]<6; sector[0]++){
abf60186 246 for(sector[1]=0; sector[1]<5; sector[1]++){
247 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 248 for(Int_t res=0; res<2; res++){
abf60186 249 digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res)
48642b09 250 + Pedestal(sector[0], sector[1], res);
7f73eb6b 251 }
58e12fee 252 /*printf("\t DIGIT added -> det %d quad %d - digi[0,1] = [%d, %d]\n",
abf60186 253 sector[0], sector[1], digi[0], digi[1]); // Chiara debugging!
d79f8d50 254 */
abf60186 255 //
256 new(pdigit) AliZDCDigit(sector, digi);
8309c1ab 257 treeD->Fill();
258 }
83347831 259 } // Loop over detector
260 // Adding in-time digits for 2 reference PTM signals (after signal ch.)
261 // (for the moment the ref. signal is completely invented assuming a PMgain of 5*10^4!)
262 Int_t sectorRef[2];
263 sectorRef[1] = 5;
9d38ced8 264 Int_t sigRef[2];
80e87581 265 // Reference signal are set to 100 (high gain chain) and 800 (low gain chain)
9d38ced8 266 if(fIsCalibration==0) {sigRef[0]=100; sigRef[1]=800;}
80e87581 267 else {sigRef[0]=0; sigRef[1]=0;} // calibration -> simulation of pedestal values
9d38ced8 268 //
83347831 269 for(Int_t iref=0; iref<2; iref++){
270 sectorRef[0] = 3*iref+1;
271 for(Int_t res=0; res<2; res++){
272 sigRef[res] += Pedestal(sectorRef[0], sectorRef[1], res);
273 }
274 /*printf("\t RefDigit added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
275 sectorRef[0], sectorRef[1], sigRef[0], sigRef[1]); // Chiara debugging!
276 */
277 new(pdigit) AliZDCDigit(sectorRef, sigRef);
278 treeD->Fill();
abf60186 279 }
d79f8d50 280 //
281 // --- Adding digits for out-of-time channels after signal digits
80e87581 282 for(sector[0]=1; sector[0]<6; sector[0]++){
d79f8d50 283 for(sector[1]=0; sector[1]<5; sector[1]++){
284 if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue;
8574b308 285 for(Int_t res=0; res<2; res++){
d79f8d50 286 digioot[res] = Pedestal(sector[0], sector[1], res); // out-of-time ADCs
287 }
288 /*printf("\t DIGIToot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
289 sector[0], sector[1], digioot[0], digioot[1]); // Chiara debugging!
290 */
291 //
292 new(pdigit) AliZDCDigit(sector, digioot);
293 treeD->Fill();
d79f8d50 294 }
295 }
83347831 296 // Adding out-of-time digits for 2 reference PTM signals (after out-of-time ch.)
297 Int_t sigRefoot[2];
298 for(Int_t iref=0; iref<2; iref++){
299 sectorRef[0] = 3*iref+1;
300 for(Int_t res=0; res<2; res++){
301 sigRefoot[res] = Pedestal(sectorRef[0], sectorRef[1], res);
302 }
303 /*printf("\t RefDigitoot added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n",
304 sectorRef[0], sectorRef[1], sigRefoot[0], sigRefoot[1]); // Chiara debugging!
305 */
306 new(pdigit) AliZDCDigit(sectorRef, sigRefoot);
307 treeD->Fill();
83347831 308 }
309 //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries());
310
8309c1ab 311 // write the output tree
312 loader->WriteDigits("OVERWRITE");
313 loader->UnloadDigits();
314}
315
316
317//_____________________________________________________________________________
318void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP,
319 Int_t &freeSpecN, Int_t &freeSpecP) const
320{
321// simulate fragmentation of spectators
322
8309c1ab 323 AliZDCFragment frag(impPar);
8309c1ab 324
325 // Fragments generation
92339a90 326 frag.GenerateIMF();
327 Int_t nAlpha = frag.GetNalpha();
8309c1ab 328
329 // Attach neutrons
92339a90 330 Int_t ztot = frag.GetZtot();
331 Int_t ntot = frag.GetNtot();
332 frag.AttachNeutrons();
8309c1ab 333 freeSpecN = specN-ntot-2*nAlpha;
334 freeSpecP = specP-ztot-2*nAlpha;
3848c666 335 // Removing deuterons
a0607c1f 336 Int_t ndeu = (Int_t) (freeSpecN*frag.DeuteronNumber());
3848c666 337 freeSpecN -= ndeu;
338 //
8309c1ab 339 if(freeSpecN<0) freeSpecN=0;
340 if(freeSpecP<0) freeSpecP=0;
341 AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP));
342}
343
344//_____________________________________________________________________________
345void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents,
346 Float_t pm[3][5]) const
347{
348// add signal of the spectators
349
350 TFile* file = NULL;
8574b308 351 if(SpecType == 1) { // --- Signal for spectator neutrons
e689b8ea 352 file = TFile::Open("$ALICE_ROOT/ZDC/ZNsignalntu.root");
8574b308 353 } else if(SpecType == 2) { // --- Signal for spectator protons
e689b8ea 354 file = TFile::Open("$ALICE_ROOT/ZDC/ZPsignalntu.root");
8309c1ab 355 }
8574b308 356 if(!file || !file->IsOpen()) {
8309c1ab 357 AliError("Opening of file failed");
358 return;
359 }
360
361 TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal");
362 Int_t nentries = (Int_t) zdcSignal->GetEntries();
363
364 Float_t *entry, hitsSpec[7];
365 Int_t pl, i, j, k, iev=0, rnd[125], volume[2];
48642b09 366 for(pl=0;pl<125;pl++) rnd[pl] = 0;
8574b308 367 if(numEvents > 125) {
8309c1ab 368 AliWarning(Form("numEvents (%d) is larger than 125", numEvents));
369 numEvents = 125;
370 }
371 for(pl=0;pl<numEvents;pl++){
372 rnd[pl] = (Int_t) (9999*gRandom->Rndm());
85a96223 373 if(rnd[pl] >= 9999) rnd[pl] = 9998;
8309c1ab 374 //printf(" rnd[%d] = %d\n",pl,rnd[pl]);
375 }
376 // Sorting vector in ascending order with C function QSORT
377 qsort((void*)rnd,numEvents,sizeof(Int_t),comp);
378 do{
379 for(i=0; i<nentries; i++){
380 zdcSignal->GetEvent(i);
381 entry = zdcSignal->GetArgs();
382 if(entry[0] == rnd[iev]){
383 for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1];
384 for(j=0; j<7; j++) hitsSpec[j] = entry[j+3];
48642b09 385 //
8309c1ab 386 Float_t lightQ = hitsSpec[4];
387 Float_t lightC = hitsSpec[5];
78d18275 388 AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f",
8309c1ab 389 volume[0], volume[1], lightQ, lightC));
48642b09 390 //printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f",
391 // volume[0], volume[1], lightQ, lightC);
acf9550c 392 if(volume[0] != 3) { // ZN or ZP
8309c1ab 393 pm[volume[0]-1][0] += lightC;
394 pm[volume[0]-1][volume[1]] += lightQ;
48642b09 395 //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0],
396 // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]);
397 }
398 else {
8574b308 399 if(volume[1] == 1) pm[2][1] += lightC; // ZEM 1
acf9550c 400 else pm[2][2] += lightQ; // ZEM 2
48642b09 401 //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]);
402 }
8309c1ab 403 }
404 else if(entry[0] > rnd[iev]){
405 iev++;
406 continue;
407 }
408 }
409 }while(iev<numEvents);
410
411 file->Close();
412 delete file;
413}
414
415
416//_____________________________________________________________________________
417Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light,
418 Int_t Res) const
419{
48642b09 420 // Evaluation of the ADC channel corresponding to the light yield Light
8a2624cc 421 Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]);
58e12fee 422 //printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,vADCch);
7f73eb6b 423
8a2624cc 424 return vADCch;
48642b09 425}
8309c1ab 426
48642b09 427//_____________________________________________________________________________
428Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const
429{
8a2624cc 430 // Returns a pedestal for detector det, PM quad, channel with res.
431 //
65b16e87 432 Float_t pedValue;
abf60186 433 // Normal run
434 if(fIsCalibration == 0){
c35ed519 435 Int_t index=0, kNch=24;
83347831 436 if(Quad!=5){
c35ed519 437 if(Det==1) index = Quad+kNch*Res; // ZNC
438 else if(Det==2) index = (Quad+5)+kNch*Res; // ZPC
439 else if(Det==3) index = (Quad+9)+kNch*Res; // ZEM
440 else if(Det==4) index = (Quad+12)+kNch*Res; // ZNA
441 else if(Det==5) index = (Quad+17)+kNch*Res; // ZPA
83347831 442 }
c35ed519 443 else index = (Det-1)/3+22+kNch*Res; // Reference PMs
83347831 444 //
c35ed519 445 Float_t meanPed = fPedData->GetMeanPed(index);
446 Float_t pedWidth = fPedData->GetMeanPedWidth(index);
65b16e87 447 pedValue = gRandom->Gaus(meanPed,pedWidth);
abf60186 448 //
58e12fee 449 /*printf("\t AliZDCDigitizer::Pedestal -> det %d quad %d res %d - Ped[%d] = %d\n",
65b16e87 450 Det, Quad, Res, index,(Int_t) pedValue); // Chiara debugging!
abf60186 451 */
452 }
7f73eb6b 453 // To create calibration object
83347831 454 else{
65b16e87 455 if(Res == 0) pedValue = gRandom->Gaus((35.+10.*gRandom->Rndm()),(0.5+0.2*gRandom->Rndm())); //High gain
456 else pedValue = gRandom->Gaus((250.+100.*gRandom->Rndm()),(3.5+2.*gRandom->Rndm())); //Low gain
83347831 457 }
dbc8d7fc 458
65b16e87 459 return (Int_t) pedValue;
8309c1ab 460}
461
462//_____________________________________________________________________________
78d18275 463AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri)
8309c1ab 464{
8309c1ab 465
78d18275 466 Bool_t deleteManager = kFALSE;
48642b09 467
78d18275 468 AliCDBManager *manager = AliCDBManager::Instance();
469 AliCDBStorage *defstorage = manager->GetDefaultStorage();
48642b09 470
78d18275 471 if(!defstorage || !(defstorage->Contains("ZDC"))){
472 AliWarning("No default storage set or default storage doesn't contain ZDC!");
473 manager->SetDefaultStorage(uri);
474 deleteManager = kTRUE;
475 }
476
477 AliCDBStorage *storage = manager->GetDefaultStorage();
478
479 if(deleteManager){
480 AliCDBManager::Instance()->UnsetDefaultStorage();
481 defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy()
482 }
483
484 return storage;
485}
48642b09 486
78d18275 487//_____________________________________________________________________________
6024ec85 488AliZDCPedestals* AliZDCDigitizer::GetPedData() const
489{
490
491 // Getting pedestal calibration object for ZDC set
492
493 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Pedestals");
494 if(!entry) AliFatal("No calibration data loaded!");
495
496 AliZDCPedestals *calibdata = dynamic_cast<AliZDCPedestals*> (entry->GetObject());
497 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
498
499 return calibdata;
500}
501
502//_____________________________________________________________________________
503AliZDCCalib* AliZDCDigitizer::GetCalibData() const
504{
505
506 // Getting calibration object for ZDC set
507
508 AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Calib");
509 if(!entry) AliFatal("No calibration data loaded!");
510
511 AliZDCCalib *calibdata = dynamic_cast<AliZDCCalib*> (entry->GetObject());
512 if(!calibdata) AliFatal("Wrong calibration object in calibration file!");
513
514 return calibdata;
515}