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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 | |
ef0750c2 | 24 | #include <Riostream.h> |
359cdddc | 25 | #include <TTree.h> |
26 | #include <TFile.h> | |
27 | #include <TDirectory.h> | |
1acbaaa8 | 28 | #include <TNtuple.h> |
53c30603 | 29 | #include <TSystem.h> |
fe107ada | 30 | #include <TROOT.h> |
359cdddc | 31 | |
32 | // --- AliRoot header files | |
33 | #include "AliZDCMerger.h" | |
34 | #include "AliZDC.h" | |
35 | #include "AliZDCHit.h" | |
1acbaaa8 | 36 | #include "AliZDCMergedHit.h" |
359cdddc | 37 | #include "AliZDCDigit.h" |
38 | #include "AliZDCFragment.h" | |
39 | #include "AliRun.h" | |
40 | #include "AliDetector.h" | |
41 | #include "AliHeader.h" | |
42 | #include "AliGenEventHeader.h" | |
53c30603 | 43 | #include "AliGenHijingEventHeader.h" |
359cdddc | 44 | |
45 | ClassImp(AliZDCMerger) | |
46 | ||
1450a7cd | 47 | //int comp(const void *i,const void *j) {return *(int *)i - *(int *)j;} |
48 | ||
359cdddc | 49 | //____________________________________________________________________________ |
50 | AliZDCMerger::AliZDCMerger() | |
51 | { | |
52 | // Default constructor | |
1450a7cd | 53 | //fMerge = kDigitize -> Only digitization |
54 | //fMerge = kMerge -> Digitization + Merging | |
55 | fMerge = kMerge; | |
359cdddc | 56 | fFnBgr = 0; |
359cdddc | 57 | fBgrFile = 0; |
1acbaaa8 | 58 | fNEvBgr = 0; |
2685bf00 | 59 | fHitsBgr = 0; |
359cdddc | 60 | fImpPar = 0; |
61 | fSpecn = 0; | |
62 | fSpecp = 0; | |
63 | fFreeSpn = 0; | |
64 | fFreeSpp = 0; | |
65 | fFnSpecn = 0; | |
359cdddc | 66 | fSpecnFile = 0; |
67 | fFnSpecp = 0; | |
359cdddc | 68 | fSpecpFile = 0; |
1acbaaa8 | 69 | fNMhits = 0; |
1450a7cd | 70 | |
359cdddc | 71 | } |
72 | ||
73 | //____________________________________________________________________________ | |
74 | AliZDCMerger::~AliZDCMerger() | |
75 | { | |
fe107ada | 76 | // Destructor |
359cdddc | 77 | if (fSpecnFile) delete fSpecnFile; |
78 | if (fSpecpFile) delete fSpecpFile; | |
79 | } | |
80 | ||
81 | //____________________________________________________________________________ | |
82 | void AliZDCMerger::InitMerging() | |
83 | { | |
84 | // Hits tree, impact parameter, num. of spectators n & p | |
85 | // in background (full Hijing) event | |
86 | Float_t b; | |
1450a7cd | 87 | Background(b, fSpecn, fSpecp); |
359cdddc | 88 | |
89 | // Production of nuclear fragments -> num. of FREE spectators n & p | |
1450a7cd | 90 | Fragmentation(b, fSpecn, fSpecp, fFreeSpn, fFreeSpp); |
359cdddc | 91 | |
92 | // Extract from spectators distribution the signal events: | |
93 | // NFreeSpectatorN spectator n & NFreeSpectatorP spectator p | |
1acbaaa8 | 94 | Mixing(); |
359cdddc | 95 | } |
96 | ||
97 | //____________________________________________________________________________ | |
98 | void AliZDCMerger::Background(Float_t &fImpPar, Int_t &fSpecn, Int_t &fSpecp) | |
99 | { | |
100 | ||
101 | // --- Open the background file | |
fe107ada | 102 | if (fMerge && !fBgrFile) fBgrFile = OpenBgrFile(); |
359cdddc | 103 | |
104 | // --- Read from the TreeE impact parameter (b), | |
105 | // # of spectators n and p (fSpecn, fSpecp) | |
106 | fBgrFile->cd(); | |
107 | ||
1acbaaa8 | 108 | // // Get AliRun object from file or create it if not on file |
359cdddc | 109 | // gAlice = (AliRun*)fBgrFile->Get("gAlice"); |
1acbaaa8 | 110 | // if (!gAlice) { |
111 | // gAlice = (AliRun*)fBgrFile->Get("gAlice"); | |
112 | // if (gAlice) printf("AliRun object found on file\n"); | |
113 | // if (!gAlice) { | |
114 | // printf("\n create new gAlice object"); | |
115 | // gAlice = new AliRun("gAlice","Alice test program"); | |
116 | // } | |
117 | // } | |
1450a7cd | 118 | |
fe107ada | 119 | // gAlice->GetEvent(fNEvBgr); this is done in the steering macro |
359cdddc | 120 | AliHeader *header = gAlice->GetHeader(); |
121 | AliGenEventHeader* mcHeader = header->GenEventHeader(); | |
122 | fImpPar = ((AliGenHijingEventHeader*) mcHeader)->ImpactParameter(); | |
1450a7cd | 123 | Int_t dSpecn = ((AliGenHijingEventHeader*) mcHeader)->Spectatorsn(); |
124 | Int_t dSpecp = ((AliGenHijingEventHeader*) mcHeader)->Spectatorsp(); | |
125 | // Until there is only 1 ZDC set the # of spectators must be divided by 2!!! | |
126 | fSpecn = dSpecn/2; | |
127 | fSpecp = dSpecp/2; | |
128 | printf("\n HIJING ev. #%d - b = %f fm, Nspecn = %d, Nspecp = %d\n", | |
129 | fNEvBgr,fImpPar,fSpecn,fSpecp); | |
359cdddc | 130 | } |
131 | ||
132 | //____________________________________________________________________________ | |
133 | TFile* AliZDCMerger::OpenBgrFile() | |
134 | { | |
135 | // Initialise background event | |
fe107ada | 136 | TFile *file = (TFile*)gROOT->GetListOfFiles()->FindObject(fFnBgr); |
137 | if(!file)cerr<<"AliZDCMerger: background file "<<fFnBgr<<" not found\n"; | |
138 | // TFile *file = new TFile(fFnBgr,"UPDATE"); | |
1acbaaa8 | 139 | printf("\n AliZDCMerger --- Background event -> %s file opened \n", fFnBgr); |
359cdddc | 140 | fHitsBgr = new TClonesArray("AliZDCHit",1000); |
1acbaaa8 | 141 | fMHits = new TClonesArray("AliZDCMergedHit",1000); |
359cdddc | 142 | return file; |
143 | } | |
144 | ||
145 | //____________________________________________________________________________ | |
146 | void AliZDCMerger::Fragmentation(Float_t fImpPar, Int_t fSpecn, Int_t fSpecp, | |
147 | Int_t &fFreeSpn, Int_t &fFreeSpp) | |
148 | { | |
1450a7cd | 149 | //printf("\n Fragmentation -> fSpecn = %d, fSpecp = %d\n",fSpecn,fSpecp); |
359cdddc | 150 | Int_t j, zz[100], nn[100], nAlpha, Ztot, Ntot; |
151 | AliZDCFragment *frag = new AliZDCFragment(fImpPar); | |
152 | for(j=0; j<=99; j++){ | |
153 | zz[j] =0; | |
154 | nn[j] =0; | |
155 | } | |
156 | ||
157 | // Fragments generation | |
158 | frag->GenerateIMF(zz, nAlpha); | |
159 | ||
160 | // Attach neutrons | |
161 | Ztot=0; | |
162 | Ntot=0; | |
163 | frag->AttachNeutrons(zz, nn, Ztot, Ntot); | |
1450a7cd | 164 | fFreeSpn = fSpecn-Ntot-2*nAlpha; |
165 | fFreeSpp = fSpecp-Ztot-2*nAlpha; | |
166 | if(fFreeSpn<0) fFreeSpn=0; | |
167 | if(fFreeSpp<0) fFreeSpp=0; | |
168 | //printf("\n 2*nAlpha = %d, Ztot = %d, Ntot = %d\n",2*nAlpha, Ztot, Ntot); | |
1acbaaa8 | 169 | printf("\n Fragmentation -> FreeSpn = %d, FreeSpp = %d\n",fFreeSpn,fFreeSpp); |
359cdddc | 170 | } |
171 | ||
172 | //____________________________________________________________________________ | |
1acbaaa8 | 173 | void AliZDCMerger::Mixing() |
359cdddc | 174 | { |
1acbaaa8 | 175 | |
1450a7cd | 176 | //printf("\n AliZDCMerger->Mixing\n"); |
1acbaaa8 | 177 | |
359cdddc | 178 | // ### Background event Hits ########################################### |
179 | fBgrFile->cd(); | |
180 | // fBgrFile->ls(); | |
181 | ||
1acbaaa8 | 182 | AliZDC *ZDC = (AliZDC *)gAlice->GetModule("ZDC"); |
359cdddc | 183 | // if(ZDC) printf("\n Ho trovato lo ZDC!\n"); |
184 | ||
1acbaaa8 | 185 | // fNEvBgr = 0; // Let's suppose to have 1 full Hijing event per file |
1acbaaa8 | 186 | // Hits tree |
359cdddc | 187 | char treeBgrName[20]; |
188 | sprintf(treeBgrName,"TreeH%d",fNEvBgr); | |
1acbaaa8 | 189 | fTrHBgr = (TTree*)gDirectory->Get(treeBgrName); |
359cdddc | 190 | if(!fTrHBgr){ |
191 | printf("\n ERROR -> Can't find TreeH%d in background file\n",fNEvBgr); | |
192 | } | |
1acbaaa8 | 193 | // fTrHBgr->Print(); |
194 | ||
195 | // Branch address | |
196 | TBranch *branch; | |
197 | char branchname[20]; | |
198 | sprintf(branchname,"%s",ZDC->GetName()); | |
199 | if(fTrHBgr && fHitsBgr){ | |
200 | // printf("\n fTrHBgr!=0 && fHitsBgr!=0\n"); | |
201 | branch = fTrHBgr->GetBranch(branchname); | |
202 | if(branch) branch->SetAddress(&fHitsBgr); | |
203 | } | |
204 | ||
359cdddc | 205 | Int_t ntracks = (Int_t) fTrHBgr->GetEntries(); |
1450a7cd | 206 | //printf("\n --- ntracks = %d\n\n", ntracks); |
1acbaaa8 | 207 | |
208 | Int_t itrack, nhits, ihit, j, sector[2]; | |
209 | AliZDCHit* zdcHit; | |
210 | AliZDCMergedHit *MHit; | |
211 | Float_t MHits[7]; | |
212 | TClonesArray &sdigits = *fMHits; // SDigits TCArray | |
213 | fNMhits = 0; | |
359cdddc | 214 | |
359cdddc | 215 | // --- Tracks loop |
216 | for(itrack=0; itrack<ntracks; itrack++){ | |
359cdddc | 217 | fTrHBgr->GetEvent(itrack); |
218 | ||
1acbaaa8 | 219 | nhits = fHitsBgr->GetEntries(); |
1acbaaa8 | 220 | // printf(" nhits = %d \n", nhits); |
221 | for(ihit=0; ihit<nhits; ihit++){ | |
222 | zdcHit = (AliZDCHit*) fHitsBgr->UncheckedAt(ihit); | |
223 | ||
224 | for(j=0; j<2; j++) sector[j] = zdcHit->GetVolume(j); | |
225 | MHits[0] = zdcHit->GetPrimKinEn(); | |
226 | MHits[1] = zdcHit->GetXImpact(); | |
227 | MHits[2] = zdcHit->GetYImpact(); | |
228 | MHits[3] = zdcHit->GetSFlag(); | |
1450a7cd | 229 | MHits[4] = zdcHit->GetLightPMQ(); |
1acbaaa8 | 230 | MHits[5] = zdcHit->GetLightPMC(); |
231 | MHits[6] = zdcHit->GetEnergy(); | |
232 | MHit = new AliZDCMergedHit(sector, MHits); | |
233 | // MHit->Print(""); | |
234 | new((*fMHits)[fNMhits]) AliZDCMergedHit(*MHit); | |
235 | new (sdigits[fNMhits]) AliZDCMergedHit(*MHit); | |
236 | delete MHit; | |
237 | fNMhits++; | |
238 | }//Hits loop | |
239 | ||
359cdddc | 240 | } // Tracks loop |
1450a7cd | 241 | //printf(" fNMhits (after bckg) = %d, \n",fNMhits); |
1acbaaa8 | 242 | |
243 | // ### Signal event Hits ########################################### | |
244 | // --- Neutrons | |
245 | ExtractSignal(1); | |
359cdddc | 246 | |
1acbaaa8 | 247 | // --- Protons |
248 | ExtractSignal(2); | |
1450a7cd | 249 | //printf(" fNMhits (after signal) = %d \n",fNMhits); |
359cdddc | 250 | |
251 | } | |
252 | ||
253 | //____________________________________________________________________________ | |
1acbaaa8 | 254 | void AliZDCMerger::ExtractSignal(Int_t SpecType) |
359cdddc | 255 | { |
256 | ||
1acbaaa8 | 257 | // printf("\n Entering in Extract Signal\n"); |
258 | ||
259 | Int_t NumEvents = 0; | |
260 | if(SpecType == 1){ // --- Signal for spectator neutrons | |
261 | fFnSpecn = gSystem->ExpandPathName("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root"); | |
262 | fSpecnFile = TFile::Open(fFnSpecn,"R"); | |
263 | fSpecnFile->cd(); | |
1450a7cd | 264 | printf("\n --- ExtractSignal x n: file %s opened\n", fFnSpecn); |
1acbaaa8 | 265 | NumEvents = fFreeSpn; |
266 | } | |
267 | else if(SpecType == 2){ // --- Signal for spectator protons | |
268 | fFnSpecp = gSystem->ExpandPathName("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root"); | |
269 | fSpecpFile = TFile::Open(fFnSpecp,"R"); | |
270 | fSpecpFile->cd(); | |
1450a7cd | 271 | printf("\n --- ExtractSignal x p: file %s opened\n", fFnSpecp); |
1acbaaa8 | 272 | NumEvents = fFreeSpp; |
273 | } | |
1450a7cd | 274 | //printf("\n # of free spectators = %d\n", NumEvents); |
275 | //printf("\n fNMhits (before adding signal) = %d\n",fNMhits); | |
1acbaaa8 | 276 | |
277 | TNtuple *ZDCSignal = (TNtuple*) gDirectory->Get("ZDCSignal"); | |
278 | Int_t nentries = (Int_t) ZDCSignal->GetEntries(); | |
1450a7cd | 279 | //printf("\n # entries = %d\n", nentries); |
1acbaaa8 | 280 | |
281 | AliZDCMergedHit *MHit; | |
282 | Float_t *entry, HitsSpec[7]; | |
1450a7cd | 283 | Int_t pl, i, j, k, iev=0, rnd[125], Volume[2]; |
284 | for(pl=0;pl<125;pl++){ | |
285 | rnd[pl] = 0; | |
286 | } | |
287 | for(pl=0;pl<NumEvents;pl++){ | |
288 | rnd[pl] = (Int_t) (9999*gRandom->Rndm()); | |
289 | if(rnd[pl] >= 9998) rnd[pl] = 9997; | |
290 | //printf(" rnd[%d] = %d\n",pl,rnd[pl]); | |
291 | } | |
292 | // Sorting vector in ascending order with C function QSORT | |
293 | qsort((void*)rnd,NumEvents,sizeof(Int_t),comp); | |
294 | //for(pl=0;pl<NumEvents;pl++){ | |
295 | ////printf(" rnd[%d] = %d\n",pl,rnd[pl]); | |
296 | //} | |
297 | do{ | |
1acbaaa8 | 298 | for(i=0; i<nentries; i++){ |
299 | ZDCSignal->GetEvent(i); | |
300 | entry = ZDCSignal->GetArgs(); | |
1450a7cd | 301 | if(entry[0] == rnd[iev]){ |
1acbaaa8 | 302 | for(k=0; k<2; k++) Volume[k] = (Int_t) entry[k+1]; |
303 | for(j=0; j<7; j++){ | |
304 | HitsSpec[j] = entry[j+3]; | |
305 | } | |
1450a7cd | 306 | //printf("\n i = %d, iev = %d, entry[0] = %f, rnd[%d] = %d ",i,iev,entry[0],iev,rnd[iev]); |
1acbaaa8 | 307 | MHit = new AliZDCMergedHit(Volume, HitsSpec); |
308 | new((*fMHits)[fNMhits++]) AliZDCMergedHit(*MHit); | |
309 | delete MHit; | |
310 | } | |
1450a7cd | 311 | else if(entry[0] > rnd[iev]){ |
312 | iev++; | |
313 | continue; | |
314 | } | |
1acbaaa8 | 315 | } |
1450a7cd | 316 | }while(iev<NumEvents); |
1acbaaa8 | 317 | |
318 | if(SpecType ==1){ | |
1450a7cd | 319 | //printf("\n fNMhits (after n signal) = %d\n",fNMhits); |
1acbaaa8 | 320 | fSpecnFile->Close(); |
321 | } | |
322 | else if(SpecType == 2){ | |
1450a7cd | 323 | //printf("\n fNMhits (after p signal) = %d\n",fNMhits); |
1acbaaa8 | 324 | fSpecpFile->Close(); |
325 | } | |
326 | ||
359cdddc | 327 | } |
328 | ||
329 | //____________________________________________________________________________ | |
1acbaaa8 | 330 | void AliZDCMerger::Digitize(Int_t fNMhits, TClonesArray *fMHits) |
359cdddc | 331 | { |
332 | ||
1450a7cd | 333 | printf("\n AliZDCMerger->Digitize()"); |
359cdddc | 334 | |
335 | AliZDC *ZDC = (AliZDC *)gAlice->GetModule("ZDC"); | |
336 | // if(ZDC) printf("\n Ho trovato lo ZDC!\n"); | |
1acbaaa8 | 337 | Int_t lightQ, lightC, sector[2], digit; |
338 | Int_t PMCZN = 0, PMCZP = 0, PMQZN[4], PMQZP[4], PMZEM1 = 0, PMZEM2 = 0; | |
359cdddc | 339 | Int_t i; |
340 | for(i=0; i<4; i++){ | |
341 | PMQZN[i] = 0; | |
342 | PMQZP[i] = 0; | |
343 | } | |
1acbaaa8 | 344 | |
345 | AliZDCMergedHit *MHit; | |
346 | Int_t imhit; | |
1450a7cd | 347 | printf(" fNMHits = %d\n", fNMhits); |
1acbaaa8 | 348 | // Loop over SDigits |
349 | for(imhit=0; imhit<fNMhits; imhit++){ | |
350 | ||
351 | MHit = (AliZDCMergedHit*) fMHits->UncheckedAt(imhit); | |
352 | sector[0] = MHit->GetSector(0); | |
353 | sector[1] = MHit->GetSector(1); | |
1450a7cd | 354 | // tmp -> c'erano i quadranti cannati! |
1acbaaa8 | 355 | if((sector[1]!=1) && (sector[1]!=2) && (sector[1]!=3) && (sector[1]!=4)){ |
1450a7cd | 356 | printf("\n *** ERROR!!! sector[0] = %d, sector[1] = %d\n", |
357 | sector[0], sector[1]); | |
1acbaaa8 | 358 | sector[1] = 0; |
359 | } | |
360 | lightQ = Int_t(MHit->GetLightPMQ()); | |
361 | lightC = Int_t(MHit->GetLightPMC()); | |
1450a7cd | 362 | // printf(" imhit = %d -> DET. = %d, quad = %d,PMQ = %d, PMC = %d\n", |
1acbaaa8 | 363 | // imhit,sector[0], sector[1],lightQ, lightC); |
364 | ||
365 | if(sector[0] == 1){ //ZN | |
366 | PMCZN = PMCZN + lightC; | |
367 | PMQZN[sector[1]-1] = PMQZN[sector[1]-1] + lightQ; | |
368 | } | |
369 | else if(sector[0] == 2){ //ZP | |
370 | PMCZP = PMCZP + lightC; | |
371 | PMQZP[sector[1]-1] = PMQZP[sector[1]-1] + lightQ; | |
372 | } | |
373 | else if(sector[0] == 3){ //ZEM | |
374 | if(sector[1] ==1) PMZEM1 = PMZEM1 + lightC; | |
375 | else PMZEM2 = PMZEM2 + lightQ; | |
376 | } | |
377 | } // SDigits loop | |
359cdddc | 378 | |
1acbaaa8 | 379 | // ### Digits creation ############################################### |
359cdddc | 380 | // Create digits for ZN |
381 | Int_t PedValue; | |
382 | sector[0] = 1; // Detector = ZN | |
383 | sector[1] = 0; // Common PM ADC | |
384 | digit = Phe2ADCch(1, 0, PMCZN); | |
1450a7cd | 385 | printf("\n\n ZN ### PMCZN = %d ADCZN = %d",PMCZN, digit); |
1acbaaa8 | 386 | PedValue = AddPedestal(); |
387 | digit += PedValue; | |
388 | // printf(" PedValue = %d",PedValue); | |
359cdddc | 389 | ZDC->AddDigit(sector, digit); |
390 | Int_t j; | |
391 | for(j=0; j<4; j++){ | |
392 | sector[1] = j+1; // Towers PM ADCs | |
393 | digit = Phe2ADCch(1, j+1, PMQZN[j]); | |
1450a7cd | 394 | printf("\n PMQZN[%d] = %d phe ADCZN[%d] = %d ADCch",j,PMQZN[j],j,digit); |
359cdddc | 395 | PedValue = AddPedestal(); |
396 | digit += PedValue; | |
397 | // printf(" PedValue = %d",PedValue); | |
398 | ZDC->AddDigit(sector, digit); | |
399 | } | |
1450a7cd | 400 | printf("\n"); |
359cdddc | 401 | |
402 | // Create digits for ZP | |
403 | sector[0] = 2; // Detector = ZP | |
404 | sector[1] = 0; // Common PM ADC | |
405 | digit = Phe2ADCch(2, 0, PMCZP); | |
1450a7cd | 406 | printf("\n ZP --- PMCZP = %d phe ADCZP = %d ADCch",PMCZP,digit); |
1acbaaa8 | 407 | PedValue = AddPedestal(); |
408 | digit += PedValue; | |
1450a7cd | 409 | // printf(" PedValue = %d",PedValue); |
359cdddc | 410 | ZDC->AddDigit(sector, digit); |
411 | for(j=0; j<4; j++){ | |
412 | sector[1] = j+1; // Towers PM ADCs | |
413 | digit = Phe2ADCch(2, j+1, PMQZP[j]); | |
1450a7cd | 414 | printf("\n PMQZP[%d] = %d phe ADCZP[%d] = %d ADCch",j,PMQZP[j],j,digit); |
359cdddc | 415 | PedValue = AddPedestal(); |
416 | digit += PedValue; | |
417 | // printf(" PedValue = %d",PedValue); | |
418 | ZDC->AddDigit(sector, digit); | |
419 | } | |
1450a7cd | 420 | printf("\n"); |
359cdddc | 421 | |
422 | // Create digits for ZEM | |
1acbaaa8 | 423 | sector[0] = 3; |
424 | sector[1] = 1; // Detector = ZEM1 | |
425 | digit = Phe2ADCch(3, 1, PMZEM1); | |
1450a7cd | 426 | printf("\n ZEM *** PMZEM1 = %d phe ADCZEM1 = %d ADCch",PMZEM1,digit); |
1acbaaa8 | 427 | PedValue = AddPedestal(); |
428 | digit += PedValue; | |
429 | // printf(" PedValue = %d\n",PedValue); | |
430 | ZDC->AddDigit(sector, digit); | |
431 | sector[1] = 2; // Detector = ZEM2 | |
432 | digit = Phe2ADCch(3, 2, PMZEM2); | |
1450a7cd | 433 | printf("\n ZEM *** PMZEM2 = %d phe ADCZEM2 = %d ADCch\n",PMZEM2,digit); |
1acbaaa8 | 434 | PedValue = AddPedestal(); |
435 | digit += PedValue; | |
436 | // printf(" PedValue = %d\n",PedValue); | |
359cdddc | 437 | ZDC->AddDigit(sector, digit); |
359cdddc | 438 | } |
439 | ||
440 | //_____________________________________________________________________________ | |
441 | Int_t AliZDCMerger::Phe2ADCch(Int_t Det, Int_t Quad, Int_t Light) | |
442 | { | |
443 | // Evaluation of the ADC channel corresponding to the light yield Light | |
444 | ||
445 | if(gAlice->GetDebug() > 0){ | |
446 | // printf("\n Phe2ADCch -> Detector = %d, Quadrant = %d, Light = %d\n", Det, Quad, Light); | |
447 | } | |
448 | ||
449 | Int_t ADCch = 0; | |
359cdddc | 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.; | |
1450a7cd | 472 | Float_t PedWidth = 5.; |
359cdddc | 473 | |
474 | PedValue = (Int_t) gRandom->Gaus(PedMean,PedWidth); | |
475 | ||
476 | return PedValue; | |
477 | } |