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359cdddc | 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 | ||
17 | /////////////////////////////////////////////////////////////////////////////// | |
18 | // // | |
19 | // ZDC event merging class // | |
20 | // // | |
21 | /////////////////////////////////////////////////////////////////////////////// | |
22 | ||
23 | // --- ROOT system | |
24 | #include <iostream.h> | |
25 | #include <TTree.h> | |
26 | #include <TFile.h> | |
27 | #include <TDirectory.h> | |
1acbaaa8 | 28 | #include <TNtuple.h> |
53c30603 | 29 | #include <TSystem.h> |
359cdddc | 30 | |
31 | // --- AliRoot header files | |
32 | #include "AliZDCMerger.h" | |
33 | #include "AliZDC.h" | |
34 | #include "AliZDCHit.h" | |
1acbaaa8 | 35 | #include "AliZDCMergedHit.h" |
359cdddc | 36 | #include "AliZDCDigit.h" |
37 | #include "AliZDCFragment.h" | |
38 | #include "AliRun.h" | |
39 | #include "AliDetector.h" | |
40 | #include "AliHeader.h" | |
41 | #include "AliGenEventHeader.h" | |
53c30603 | 42 | #include "AliGenHijingEventHeader.h" |
359cdddc | 43 | |
44 | ClassImp(AliZDCMerger) | |
45 | ||
46 | //____________________________________________________________________________ | |
47 | AliZDCMerger::AliZDCMerger() | |
48 | { | |
49 | // Default constructor | |
50 | fMerge = kDigitize; | |
1acbaaa8 | 51 | // fMerge = kMerge; |
359cdddc | 52 | fFnBgr = 0; |
359cdddc | 53 | fBgrFile = 0; |
1acbaaa8 | 54 | fNEvBgr = 0; |
359cdddc | 55 | fTrHBgr = 0; |
56 | fTrSDBgr = 0; | |
57 | fImpPar = 0; | |
58 | fSpecn = 0; | |
59 | fSpecp = 0; | |
60 | fFreeSpn = 0; | |
61 | fFreeSpp = 0; | |
62 | fFnSpecn = 0; | |
359cdddc | 63 | fSpecnFile = 0; |
64 | fFnSpecp = 0; | |
359cdddc | 65 | fSpecpFile = 0; |
1acbaaa8 | 66 | fNMhits = 0; |
67 | ||
359cdddc | 68 | } |
69 | ||
70 | //____________________________________________________________________________ | |
71 | AliZDCMerger::~AliZDCMerger() | |
72 | { | |
73 | // Destructor | |
74 | if (fBgrFile) delete fBgrFile; | |
75 | if (fTrHBgr) delete fTrHBgr; | |
76 | if (fTrSDBgr) delete fTrSDBgr; | |
77 | if (fHitsBgr) delete fHitsBgr; | |
78 | if (fSpecnFile) delete fSpecnFile; | |
79 | if (fSpecpFile) delete fSpecpFile; | |
80 | } | |
81 | ||
82 | //____________________________________________________________________________ | |
83 | void AliZDCMerger::InitMerging() | |
84 | { | |
85 | // Hits tree, impact parameter, num. of spectators n & p | |
86 | // in background (full Hijing) event | |
87 | Float_t b; | |
88 | Int_t nspecn, nspecp; | |
89 | Background(b, nspecn, nspecp); | |
90 | ||
91 | // Production of nuclear fragments -> num. of FREE spectators n & p | |
92 | Fragmentation(b, nspecn, nspecp, fFreeSpn, fFreeSpp); | |
93 | ||
94 | // Extract from spectators distribution the signal events: | |
95 | // NFreeSpectatorN spectator n & NFreeSpectatorP spectator p | |
1acbaaa8 | 96 | Mixing(); |
359cdddc | 97 | } |
98 | ||
99 | //____________________________________________________________________________ | |
100 | void AliZDCMerger::Background(Float_t &fImpPar, Int_t &fSpecn, Int_t &fSpecp) | |
101 | { | |
102 | ||
103 | // --- Open the background file | |
104 | if (fMerge && !fBgrFile) fBgrFile = OpenBgrFile(); | |
105 | ||
106 | // --- Read from the TreeE impact parameter (b), | |
107 | // # of spectators n and p (fSpecn, fSpecp) | |
108 | fBgrFile->cd(); | |
109 | ||
1acbaaa8 | 110 | // // Get AliRun object from file or create it if not on file |
359cdddc | 111 | // gAlice = (AliRun*)fBgrFile->Get("gAlice"); |
1acbaaa8 | 112 | // if (!gAlice) { |
113 | // gAlice = (AliRun*)fBgrFile->Get("gAlice"); | |
114 | // if (gAlice) printf("AliRun object found on file\n"); | |
115 | // if (!gAlice) { | |
116 | // printf("\n create new gAlice object"); | |
117 | // gAlice = new AliRun("gAlice","Alice test program"); | |
118 | // } | |
119 | // } | |
120 | ||
359cdddc | 121 | AliHeader *header = gAlice->GetHeader(); |
122 | AliGenEventHeader* mcHeader = header->GenEventHeader(); | |
123 | fImpPar = ((AliGenHijingEventHeader*) mcHeader)->ImpactParameter(); | |
124 | fSpecn = ((AliGenHijingEventHeader*) mcHeader)->Spectatorsn(); | |
125 | fSpecp = ((AliGenHijingEventHeader*) mcHeader)->Spectatorsp(); | |
1acbaaa8 | 126 | printf("\n HIJING simulation - b = %f fm, Nspecn = %d, Nspecp = %d\n",fImpPar,fSpecn,fSpecp); |
359cdddc | 127 | } |
128 | ||
129 | //____________________________________________________________________________ | |
130 | TFile* AliZDCMerger::OpenBgrFile() | |
131 | { | |
132 | // Initialise background event | |
133 | TFile *file = new TFile(fFnBgr,"UPDATE"); | |
1acbaaa8 | 134 | printf("\n AliZDCMerger --- Background event -> %s file opened \n", fFnBgr); |
359cdddc | 135 | fHitsBgr = new TClonesArray("AliZDCHit",1000); |
1acbaaa8 | 136 | fMHits = new TClonesArray("AliZDCMergedHit",1000); |
359cdddc | 137 | return file; |
138 | } | |
139 | ||
140 | //____________________________________________________________________________ | |
141 | void AliZDCMerger::Fragmentation(Float_t fImpPar, Int_t fSpecn, Int_t fSpecp, | |
142 | Int_t &fFreeSpn, Int_t &fFreeSpp) | |
143 | { | |
144 | Int_t j, zz[100], nn[100], nAlpha, Ztot, Ntot; | |
145 | AliZDCFragment *frag = new AliZDCFragment(fImpPar); | |
146 | for(j=0; j<=99; j++){ | |
147 | zz[j] =0; | |
148 | nn[j] =0; | |
149 | } | |
150 | ||
151 | // Fragments generation | |
152 | frag->GenerateIMF(zz, nAlpha); | |
153 | ||
154 | // Attach neutrons | |
155 | Ztot=0; | |
156 | Ntot=0; | |
157 | frag->AttachNeutrons(zz, nn, Ztot, Ntot); | |
158 | fFreeSpn = fSpecn-Ztot-2*nAlpha; | |
159 | fFreeSpp = fSpecp-Ntot-2*nAlpha; | |
1acbaaa8 | 160 | printf("\n Fragmentation -> FreeSpn = %d, FreeSpp = %d\n",fFreeSpn,fFreeSpp); |
359cdddc | 161 | } |
162 | ||
163 | //____________________________________________________________________________ | |
1acbaaa8 | 164 | void AliZDCMerger::Mixing() |
359cdddc | 165 | { |
1acbaaa8 | 166 | |
167 | // printf("\n AliZDCMerger->Mixing\n"); | |
168 | ||
359cdddc | 169 | // ### Background event Hits ########################################### |
170 | fBgrFile->cd(); | |
171 | // fBgrFile->ls(); | |
172 | ||
1acbaaa8 | 173 | AliZDC *ZDC = (AliZDC *)gAlice->GetModule("ZDC"); |
359cdddc | 174 | // if(ZDC) printf("\n Ho trovato lo ZDC!\n"); |
175 | ||
176 | // Hits tree | |
177 | if(fTrHBgr) delete fTrHBgr; | |
1acbaaa8 | 178 | fTrHBgr = 0; |
359cdddc | 179 | // SDigits tree |
180 | if(fTrSDBgr) delete fTrSDBgr; | |
181 | fTrSDBgr = 0; | |
182 | ||
1acbaaa8 | 183 | // fNEvBgr = 0; // Let's suppose to have 1 full Hijing event per file |
359cdddc | 184 | |
1acbaaa8 | 185 | // Hits tree |
359cdddc | 186 | char treeBgrName[20]; |
187 | sprintf(treeBgrName,"TreeH%d",fNEvBgr); | |
1acbaaa8 | 188 | fTrHBgr = (TTree*)gDirectory->Get(treeBgrName); |
359cdddc | 189 | if(!fTrHBgr){ |
190 | printf("\n ERROR -> Can't find TreeH%d in background file\n",fNEvBgr); | |
191 | } | |
1acbaaa8 | 192 | // fTrHBgr->Print(); |
193 | ||
194 | // Branch address | |
195 | TBranch *branch; | |
196 | char branchname[20]; | |
197 | sprintf(branchname,"%s",ZDC->GetName()); | |
198 | if(fTrHBgr && fHitsBgr){ | |
199 | // printf("\n fTrHBgr!=0 && fHitsBgr!=0\n"); | |
200 | branch = fTrHBgr->GetBranch(branchname); | |
201 | if(branch) branch->SetAddress(&fHitsBgr); | |
202 | } | |
203 | ||
359cdddc | 204 | Int_t ntracks = (Int_t) fTrHBgr->GetEntries(); |
1acbaaa8 | 205 | // printf("\n --- ntracks = %d\n\n", ntracks); |
206 | ||
207 | Int_t itrack, nhits, ihit, j, sector[2]; | |
208 | AliZDCHit* zdcHit; | |
209 | AliZDCMergedHit *MHit; | |
210 | Float_t MHits[7]; | |
211 | TClonesArray &sdigits = *fMHits; // SDigits TCArray | |
212 | fNMhits = 0; | |
359cdddc | 213 | |
359cdddc | 214 | // --- Tracks loop |
215 | for(itrack=0; itrack<ntracks; itrack++){ | |
1acbaaa8 | 216 | // printf(" itrack = %d", itrack); |
217 | // gAlice->ResetHits(); | |
359cdddc | 218 | fTrHBgr->GetEvent(itrack); |
219 | ||
1acbaaa8 | 220 | // for(AliZDCHit* zdcHit=(AliZDCHit*)ZDC->FirstHit(-1); |
221 | // zdcHit; | |
222 | // zdcHit = (AliZDCHit*)ZDC->NextHit()){ | |
223 | ||
224 | nhits = fHitsBgr->GetEntries(); | |
225 | // nhits = ZDCdp->GetNhits(); | |
226 | // printf(" nhits = %d \n", nhits); | |
227 | for(ihit=0; ihit<nhits; ihit++){ | |
228 | zdcHit = (AliZDCHit*) fHitsBgr->UncheckedAt(ihit); | |
229 | ||
230 | for(j=0; j<2; j++) sector[j] = zdcHit->GetVolume(j); | |
231 | MHits[0] = zdcHit->GetPrimKinEn(); | |
232 | MHits[1] = zdcHit->GetXImpact(); | |
233 | MHits[2] = zdcHit->GetYImpact(); | |
234 | MHits[3] = zdcHit->GetSFlag(); | |
235 | MHits[4] = zdcHit->GetLightPMQ(); | |
236 | MHits[5] = zdcHit->GetLightPMC(); | |
237 | MHits[6] = zdcHit->GetEnergy(); | |
238 | MHit = new AliZDCMergedHit(sector, MHits); | |
239 | // MHit->Print(""); | |
240 | new((*fMHits)[fNMhits]) AliZDCMergedHit(*MHit); | |
241 | new (sdigits[fNMhits]) AliZDCMergedHit(*MHit); | |
242 | delete MHit; | |
243 | fNMhits++; | |
244 | }//Hits loop | |
245 | ||
359cdddc | 246 | } // Tracks loop |
1acbaaa8 | 247 | // printf("\n fNMhits (after bckg) = %d, \n",fNMhits); |
248 | // fMHits->Dump(); | |
249 | // AliZDCMergedHit *pippo7 = (AliZDCMergedHit*) fMHits->At(7); | |
250 | // pippo7->Dump(); | |
251 | ||
252 | ||
253 | // ### Signal event Hits ########################################### | |
254 | // --- Neutrons | |
255 | ExtractSignal(1); | |
359cdddc | 256 | |
1acbaaa8 | 257 | // --- Protons |
258 | ExtractSignal(2); | |
259 | // printf("\n fNMhits (after signal) = %d \n",fNMhits); | |
359cdddc | 260 | |
261 | } | |
262 | ||
263 | //____________________________________________________________________________ | |
1acbaaa8 | 264 | void AliZDCMerger::ExtractSignal(Int_t SpecType) |
359cdddc | 265 | { |
266 | ||
1acbaaa8 | 267 | // printf("\n Entering in Extract Signal\n"); |
268 | ||
269 | Int_t NumEvents = 0; | |
270 | if(SpecType == 1){ // --- Signal for spectator neutrons | |
271 | fFnSpecn = gSystem->ExpandPathName("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root"); | |
272 | fSpecnFile = TFile::Open(fFnSpecn,"R"); | |
273 | fSpecnFile->cd(); | |
274 | // printf("\n --- ExtractSignal x n: file %s opened\n", fFnSpecn); | |
275 | NumEvents = fFreeSpn; | |
276 | } | |
277 | else if(SpecType == 2){ // --- Signal for spectator protons | |
278 | fFnSpecp = gSystem->ExpandPathName("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root"); | |
279 | fSpecpFile = TFile::Open(fFnSpecp,"R"); | |
280 | fSpecpFile->cd(); | |
281 | // printf("\n --- ExtractSignal x p: file %s opened\n", fFnSpecp); | |
282 | NumEvents = fFreeSpp; | |
283 | } | |
284 | // printf("\n # of free spectator = %d\n", NumEvents); | |
285 | // printf("\n fNMhits (before adding signal) = %d\n",fNMhits); | |
286 | ||
287 | TNtuple *ZDCSignal = (TNtuple*) gDirectory->Get("ZDCSignal"); | |
288 | Int_t nentries = (Int_t) ZDCSignal->GetEntries(); | |
289 | // printf("\n # entries = %d\n", nentries); | |
290 | Int_t i, j, k; | |
291 | ||
292 | AliZDCMergedHit *MHit; | |
293 | Float_t *entry, HitsSpec[7]; | |
294 | Int_t iev, rnd, Volume[2]; | |
295 | for(iev=0; iev<NumEvents; iev++){ | |
296 | rnd = (Int_t) (1000*gRandom->Rndm()); | |
297 | // printf("\n rnd = %d\n", rnd); | |
298 | for(i=0; i<nentries; i++){ | |
299 | ZDCSignal->GetEvent(i); | |
300 | entry = ZDCSignal->GetArgs(); | |
301 | if(entry[0] == rnd){ | |
302 | // printf("\n entry[0] = %f\n", entry[0]); | |
303 | for(k=0; k<2; k++) Volume[k] = (Int_t) entry[k+1]; | |
304 | for(j=0; j<7; j++){ | |
305 | HitsSpec[j] = entry[j+3]; | |
306 | } | |
307 | MHit = new AliZDCMergedHit(Volume, HitsSpec); | |
308 | new((*fMHits)[fNMhits++]) AliZDCMergedHit(*MHit); | |
309 | delete MHit; | |
310 | } | |
311 | else if(entry[0] > rnd) break; | |
312 | } | |
313 | } | |
314 | ||
315 | if(SpecType ==1){ | |
316 | // printf("\n fNMhits (after n signal) = %d\n",fNMhits); | |
317 | fSpecnFile->Close(); | |
318 | } | |
319 | else if(SpecType == 2){ | |
320 | // printf("\n fNMhits (after p signal) = %d\n",fNMhits); | |
321 | fSpecpFile->Close(); | |
322 | } | |
323 | ||
359cdddc | 324 | } |
325 | ||
326 | //____________________________________________________________________________ | |
1acbaaa8 | 327 | void AliZDCMerger::Digitize(Int_t fNMhits, TClonesArray *fMHits) |
359cdddc | 328 | { |
329 | ||
330 | // printf("\n AliZDCMerger->Digitize()"); | |
331 | ||
332 | AliZDC *ZDC = (AliZDC *)gAlice->GetModule("ZDC"); | |
333 | // if(ZDC) printf("\n Ho trovato lo ZDC!\n"); | |
334 | ||
1acbaaa8 | 335 | Int_t lightQ, lightC, sector[2], digit; |
336 | Int_t PMCZN = 0, PMCZP = 0, PMQZN[4], PMQZP[4], PMZEM1 = 0, PMZEM2 = 0; | |
359cdddc | 337 | Int_t i; |
338 | for(i=0; i<4; i++){ | |
339 | PMQZN[i] = 0; | |
340 | PMQZP[i] = 0; | |
341 | } | |
1acbaaa8 | 342 | |
343 | AliZDCMergedHit *MHit; | |
344 | Int_t imhit; | |
345 | // printf("\n fNMHits = %d\n", fNMhits); | |
346 | // Loop over SDigits | |
347 | for(imhit=0; imhit<fNMhits; imhit++){ | |
348 | ||
349 | MHit = (AliZDCMergedHit*) fMHits->UncheckedAt(imhit); | |
350 | sector[0] = MHit->GetSector(0); | |
351 | sector[1] = MHit->GetSector(1); | |
352 | if((sector[1]!=1) && (sector[1]!=2) && (sector[1]!=3) && (sector[1]!=4)){ | |
353 | // printf("\n *** ERROR!!! sector[0] = %d, sector[1] = %d\n", | |
354 | // sector[0], sector[1]); | |
355 | sector[1] = 0; | |
356 | } | |
357 | lightQ = Int_t(MHit->GetLightPMQ()); | |
358 | lightC = Int_t(MHit->GetLightPMC()); | |
359 | // printf("\n imhit = %d -> DET. = %d, quad = %d,PMQ = %d, PMC = %d", | |
360 | // imhit,sector[0], sector[1],lightQ, lightC); | |
361 | ||
362 | if(sector[0] == 1){ //ZN | |
363 | PMCZN = PMCZN + lightC; | |
364 | PMQZN[sector[1]-1] = PMQZN[sector[1]-1] + lightQ; | |
365 | } | |
366 | else if(sector[0] == 2){ //ZP | |
367 | PMCZP = PMCZP + lightC; | |
368 | PMQZP[sector[1]-1] = PMQZP[sector[1]-1] + lightQ; | |
369 | } | |
370 | else if(sector[0] == 3){ //ZEM | |
371 | if(sector[1] ==1) PMZEM1 = PMZEM1 + lightC; | |
372 | else PMZEM2 = PMZEM2 + lightQ; | |
373 | } | |
374 | } // SDigits loop | |
359cdddc | 375 | |
1acbaaa8 | 376 | // ### Digits creation ############################################### |
359cdddc | 377 | // Create digits for ZN |
378 | Int_t PedValue; | |
379 | sector[0] = 1; // Detector = ZN | |
380 | sector[1] = 0; // Common PM ADC | |
381 | digit = Phe2ADCch(1, 0, PMCZN); | |
382 | // printf("\n\n ZN ### PMCZN = %d ADCZN = %d",PMCZN, digit); | |
1acbaaa8 | 383 | PedValue = AddPedestal(); |
384 | digit += PedValue; | |
385 | // printf(" PedValue = %d",PedValue); | |
359cdddc | 386 | ZDC->AddDigit(sector, digit); |
387 | Int_t j; | |
388 | for(j=0; j<4; j++){ | |
389 | sector[1] = j+1; // Towers PM ADCs | |
390 | digit = Phe2ADCch(1, j+1, PMQZN[j]); | |
1acbaaa8 | 391 | // printf("\n PMQZN[%d] = %d phe ADCZN[%d] = %d ADCch",j,PMQZN[j],j,digit); |
359cdddc | 392 | PedValue = AddPedestal(); |
393 | digit += PedValue; | |
394 | // printf(" PedValue = %d",PedValue); | |
395 | ZDC->AddDigit(sector, digit); | |
396 | } | |
1acbaaa8 | 397 | // printf("\n"); |
359cdddc | 398 | |
399 | // Create digits for ZP | |
400 | sector[0] = 2; // Detector = ZP | |
401 | sector[1] = 0; // Common PM ADC | |
402 | digit = Phe2ADCch(2, 0, PMCZP); | |
1acbaaa8 | 403 | // printf("\n ZP --- PMCZP = %d phe ADCZP = %d ADCch",PMCZP,digit); |
404 | PedValue = AddPedestal(); | |
405 | digit += PedValue; | |
406 | printf(" PedValue = %d",PedValue); | |
359cdddc | 407 | ZDC->AddDigit(sector, digit); |
408 | for(j=0; j<4; j++){ | |
409 | sector[1] = j+1; // Towers PM ADCs | |
410 | digit = Phe2ADCch(2, j+1, PMQZP[j]); | |
1acbaaa8 | 411 | // printf("\n PMQZP[%d] = %d phe ADCZP[%d] = %d ADCch",j,PMQZP[j],j,digit); |
359cdddc | 412 | PedValue = AddPedestal(); |
413 | digit += PedValue; | |
414 | // printf(" PedValue = %d",PedValue); | |
415 | ZDC->AddDigit(sector, digit); | |
416 | } | |
1acbaaa8 | 417 | // printf("\n"); |
359cdddc | 418 | |
419 | // Create digits for ZEM | |
1acbaaa8 | 420 | sector[0] = 3; |
421 | sector[1] = 1; // Detector = ZEM1 | |
422 | digit = Phe2ADCch(3, 1, PMZEM1); | |
423 | // printf("\n ZEM *** PMZEM1 = %d phe ADCZEM1 = %d ADCch",PMZEM1,digit); | |
424 | PedValue = AddPedestal(); | |
425 | digit += PedValue; | |
426 | // printf(" PedValue = %d\n",PedValue); | |
427 | ZDC->AddDigit(sector, digit); | |
428 | sector[1] = 2; // Detector = ZEM2 | |
429 | digit = Phe2ADCch(3, 2, PMZEM2); | |
430 | // printf("\n ZEM *** PMZEM2 = %d phe ADCZEM2 = %d ADCch",PMZEM2,digit); | |
431 | PedValue = AddPedestal(); | |
432 | digit += PedValue; | |
433 | // printf(" PedValue = %d\n",PedValue); | |
359cdddc | 434 | ZDC->AddDigit(sector, digit); |
359cdddc | 435 | } |
436 | ||
437 | //_____________________________________________________________________________ | |
438 | Int_t AliZDCMerger::Phe2ADCch(Int_t Det, Int_t Quad, Int_t Light) | |
439 | { | |
440 | // Evaluation of the ADC channel corresponding to the light yield Light | |
441 | ||
442 | if(gAlice->GetDebug() > 0){ | |
443 | // printf("\n Phe2ADCch -> Detector = %d, Quadrant = %d, Light = %d\n", Det, Quad, Light); | |
444 | } | |
445 | ||
446 | Int_t ADCch = 0; | |
447 | // Parameters for conversion of light yield in ADC channels | |
448 | Float_t fPMGain[3][5]; // PM gain | |
449 | Float_t fADCRes; // ADC conversion factor | |
450 | ||
451 | Int_t j,i; | |
452 | for(i=0; i<3; i++){ | |
453 | for(j=0; j<5; j++){ | |
454 | fPMGain[i][j] = 100000.; | |
455 | } | |
456 | } | |
457 | fADCRes = 0.00000064; // ADC Resolution: 250 fC/ADCch | |
458 | ||
459 | ADCch = (Int_t) (Light*fPMGain[Det-1][Quad]*fADCRes); | |
460 | ||
461 | return ADCch; | |
462 | } | |
463 | ||
464 | //_____________________________________________________________________________ | |
465 | Int_t AliZDCMerger::AddPedestal() | |
466 | { | |
467 | // --- Pedestal value -> extracted from a gaussian distribution | |
468 | // obtained from the beam test on the ZEM prototype (Aug. 2000) | |
469 | ||
470 | Int_t PedValue; | |
471 | Float_t PedMean = 50.; | |
472 | Float_t PedWidth = 10.; | |
473 | ||
474 | PedValue = (Int_t) gRandom->Gaus(PedMean,PedWidth); | |
475 | ||
476 | return PedValue; | |
477 | } |