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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 | |
46 | class AliCDBStorage; | |
47 | class AliZDCCalibData; | |
8309c1ab | 48 | |
49 | ClassImp(AliZDCDigitizer) | |
50 | ||
51 | ||
52 | //____________________________________________________________________________ | |
53 | AliZDCDigitizer::AliZDCDigitizer() | |
54 | { | |
55 | // Default constructor | |
56 | ||
57 | } | |
58 | ||
59 | //____________________________________________________________________________ | |
60 | AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager): | |
61 | AliDigitizer(manager) | |
62 | { | |
abf60186 | 63 | fIsCalibration=0; //By default the simulation doesn't create calib. data |
78d18275 | 64 | // Get calibration data |
7f73eb6b | 65 | fCalibData = GetCalibData(); |
31af5828 | 66 | if(fIsCalibration!=0) printf("\t **** AliZDCDigitizer -> Creating calibration data (pedestals)\n"); |
78d18275 | 67 | |
8309c1ab | 68 | } |
69 | ||
70 | //____________________________________________________________________________ | |
71 | AliZDCDigitizer::~AliZDCDigitizer() | |
72 | { | |
73 | // Destructor | |
74 | ||
75 | } | |
76 | ||
77 | ||
78 | //____________________________________________________________________________ | |
79 | Bool_t AliZDCDigitizer::Init() | |
80 | { | |
48642b09 | 81 | // Initialize the digitizer |
82 | // NB -> PM gain vs. HV & ADC resolutions will move to DCDB *************** | |
7f73eb6b | 83 | for(Int_t j = 0; j < 5; j++){ |
84 | fPMGain[0][j] = 50000.; | |
85 | fPMGain[1][j] = 100000.; | |
86 | fPMGain[2][j] = 100000.; | |
a017f01b | 87 | fPMGain[3][j] = 50000.; |
88 | fPMGain[4][j] = 100000.; | |
89 | fPMGain[5][j] = 100000.; | |
7f73eb6b | 90 | } |
91 | // ADC Caen V965 | |
92 | fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh | |
93 | fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh | |
8309c1ab | 94 | |
95 | return kTRUE; | |
96 | } | |
97 | ||
98 | //____________________________________________________________________________ | |
99 | void AliZDCDigitizer::Exec(Option_t* /*option*/) | |
100 | { | |
48642b09 | 101 | // Execute digitization |
8309c1ab | 102 | |
7f73eb6b | 103 | Float_t pm[5][5]; // !!! 2nd ZDC set added (needed for trigger purposes!) |
104 | // *** 1st 3 arrays are digits from REAL (simulated) hits | |
105 | // *** last 2 are copied from simulated digits | |
106 | // --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4] | |
107 | // --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4] | |
48642b09 | 108 | // --- pm[2][...] = light in ZEM [x, 1, 2, x, x] |
7f73eb6b | 109 | // --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW! |
110 | // --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW! | |
111 | ||
112 | for (Int_t iSector1=0; iSector1<5; iSector1++) | |
abf60186 | 113 | for (Int_t iSector2=0; iSector2<5; iSector2++){ |
8309c1ab | 114 | pm[iSector1][iSector2] = 0; |
115 | } | |
8309c1ab | 116 | |
117 | // impact parameter and number of spectators | |
118 | Float_t impPar = -1; | |
119 | Int_t specN = 0; | |
120 | Int_t specP = 0; | |
121 | ||
122 | // loop over input streams | |
abf60186 | 123 | for (Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){ |
8309c1ab | 124 | |
125 | // get run loader and ZDC loader | |
126 | AliRunLoader* runLoader = | |
127 | AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); | |
128 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
129 | if (!loader) continue; | |
130 | ||
131 | // load sdigits | |
132 | loader->LoadSDigits(); | |
133 | TTree* treeS = loader->TreeS(); | |
134 | if (!treeS) continue; | |
135 | AliZDCSDigit sdigit; | |
136 | AliZDCSDigit* psdigit = &sdigit; | |
137 | treeS->SetBranchAddress("ZDC", &psdigit); | |
138 | ||
139 | // loop over sdigits | |
abf60186 | 140 | for (Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){ |
8309c1ab | 141 | treeS->GetEntry(iSDigit); |
7f73eb6b | 142 | // |
8309c1ab | 143 | if (!psdigit) continue; |
abf60186 | 144 | if ((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){ |
8309c1ab | 145 | AliError(Form("\nsector[0] = %d, sector[1] = %d\n", |
146 | sdigit.GetSector(0), sdigit.GetSector(1))); | |
147 | continue; | |
148 | } | |
7f73eb6b | 149 | // |
48642b09 | 150 | pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM(); |
7f73eb6b | 151 | /*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n", |
48642b09 | 152 | sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1, |
153 | sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging! | |
abf60186 | 154 | */ |
8309c1ab | 155 | } |
156 | ||
8309c1ab | 157 | loader->UnloadSDigits(); |
158 | ||
159 | // get the impact parameter and the number of spectators in case of hijing | |
160 | if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); | |
161 | AliHeader* header = runLoader->GetAliRun()->GetHeader(); | |
162 | if (!header) continue; | |
163 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
164 | if (!genHeader) continue; | |
165 | if (!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue; | |
166 | impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter(); | |
85a96223 | 167 | // |
168 | specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn(); | |
169 | specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp(); | |
78d18275 | 170 | AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", |
8309c1ab | 171 | impPar, specN, specP)); |
7f73eb6b | 172 | printf("\n\t AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", impPar, specN, specP); |
8309c1ab | 173 | } |
174 | ||
175 | // add spectators | |
176 | if (impPar >= 0) { | |
177 | Int_t freeSpecN, freeSpecP; | |
178 | Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP); | |
78d18275 | 179 | printf("\n\t AliZDCDigitizer ---- Adding signal for %d free spectator n\n",freeSpecN); |
8309c1ab | 180 | SpectatorSignal(1, freeSpecN, pm); |
78d18275 | 181 | printf("\t AliZDCDigitizer ---- Adding signal for %d free spectator p\n\n",freeSpecP); |
8309c1ab | 182 | SpectatorSignal(2, freeSpecP, pm); |
183 | } | |
184 | ||
8a2624cc | 185 | |
8309c1ab | 186 | // get the output run loader and loader |
187 | AliRunLoader* runLoader = | |
188 | AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); | |
189 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
190 | if (!loader) { | |
191 | AliError("no ZDC loader found"); | |
192 | return; | |
193 | } | |
194 | ||
195 | // create the output tree | |
196 | const char* mode = "update"; | |
197 | if (runLoader->GetEventNumber() == 0) mode = "recreate"; | |
198 | loader->LoadDigits(mode); | |
199 | loader->MakeTree("D"); | |
200 | TTree* treeD = loader->TreeD(); | |
201 | AliZDCDigit digit; | |
202 | AliZDCDigit* pdigit = &digit; | |
203 | const Int_t kBufferSize = 4000; | |
204 | treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize); | |
205 | ||
206 | // Create digits | |
7f73eb6b | 207 | Int_t sector[2], sectorL[2]; |
208 | Int_t digi[2], digiL[2]; | |
abf60186 | 209 | for(sector[0]=1; sector[0]<=3; sector[0]++){ |
210 | for(sector[1]=0; sector[1]<5; sector[1]++){ | |
211 | if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue; | |
7f73eb6b | 212 | for (Int_t res=0; res<2; res++){ |
abf60186 | 213 | digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res) |
48642b09 | 214 | + Pedestal(sector[0], sector[1], res); |
7f73eb6b | 215 | } |
abf60186 | 216 | /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", |
217 | sector[0], sector[1], digi[0], digi[1]); // Chiara debugging! | |
218 | */ | |
219 | // | |
220 | new(pdigit) AliZDCDigit(sector, digi); | |
8309c1ab | 221 | treeD->Fill(); |
7f73eb6b | 222 | // |
223 | // --- Adding digits for 2nd ZDC set (left side w.r.t. IP) --- | |
224 | // --- they are copied from right ZDC digits | |
225 | if(sector[0]==1 || sector[0]==2){ | |
226 | sectorL[0] = sector[0]+3; | |
227 | sectorL[1] = sector[1]; | |
228 | for (Int_t res=0; res<2; res++){ | |
229 | digiL[res] = Phe2ADCch(sectorL[0], sectorL[1], pm[sector[0]-1][sector[1]], res) | |
230 | + Pedestal(sectorL[0], sectorL[1], res); | |
231 | } | |
abf60186 | 232 | /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", |
233 | sectorL[0], sectorL[1], digiL[0], digiL[1]); // Chiara debugging! | |
234 | */ | |
235 | // | |
236 | new(pdigit) AliZDCDigit(sectorL, digiL); | |
237 | treeD->Fill(); | |
7f73eb6b | 238 | } |
239 | // | |
abf60186 | 240 | //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries()); |
8309c1ab | 241 | } |
abf60186 | 242 | } |
8309c1ab | 243 | // write the output tree |
244 | loader->WriteDigits("OVERWRITE"); | |
245 | loader->UnloadDigits(); | |
246 | } | |
247 | ||
248 | ||
249 | //_____________________________________________________________________________ | |
250 | void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP, | |
251 | Int_t &freeSpecN, Int_t &freeSpecP) const | |
252 | { | |
253 | // simulate fragmentation of spectators | |
254 | ||
255 | Int_t zz[100], nn[100]; | |
256 | AliZDCFragment frag(impPar); | |
257 | for (Int_t j=0; j<=99; j++){ | |
258 | zz[j] =0; | |
259 | nn[j] =0; | |
260 | } | |
261 | ||
262 | // Fragments generation | |
263 | Int_t nAlpha; | |
264 | frag.GenerateIMF(zz, nAlpha); | |
265 | ||
266 | // Attach neutrons | |
267 | Int_t ztot=0; | |
268 | Int_t ntot=0; | |
269 | frag.AttachNeutrons(zz, nn, ztot, ntot); | |
270 | freeSpecN = specN-ntot-2*nAlpha; | |
271 | freeSpecP = specP-ztot-2*nAlpha; | |
272 | if(freeSpecN<0) freeSpecN=0; | |
273 | if(freeSpecP<0) freeSpecP=0; | |
274 | AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP)); | |
275 | } | |
276 | ||
277 | //_____________________________________________________________________________ | |
278 | void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents, | |
279 | Float_t pm[3][5]) const | |
280 | { | |
281 | // add signal of the spectators | |
282 | ||
283 | TFile* file = NULL; | |
284 | if (SpecType == 1) { // --- Signal for spectator neutrons | |
285 | file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root"); | |
286 | } else if (SpecType == 2) { // --- Signal for spectator protons | |
287 | file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root"); | |
288 | } | |
289 | if (!file || !file->IsOpen()) { | |
290 | AliError("Opening of file failed"); | |
291 | return; | |
292 | } | |
293 | ||
294 | TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal"); | |
295 | Int_t nentries = (Int_t) zdcSignal->GetEntries(); | |
296 | ||
297 | Float_t *entry, hitsSpec[7]; | |
298 | Int_t pl, i, j, k, iev=0, rnd[125], volume[2]; | |
48642b09 | 299 | for(pl=0;pl<125;pl++) rnd[pl] = 0; |
8309c1ab | 300 | if (numEvents > 125) { |
301 | AliWarning(Form("numEvents (%d) is larger than 125", numEvents)); | |
302 | numEvents = 125; | |
303 | } | |
304 | for(pl=0;pl<numEvents;pl++){ | |
305 | rnd[pl] = (Int_t) (9999*gRandom->Rndm()); | |
85a96223 | 306 | if(rnd[pl] >= 9999) rnd[pl] = 9998; |
8309c1ab | 307 | //printf(" rnd[%d] = %d\n",pl,rnd[pl]); |
308 | } | |
309 | // Sorting vector in ascending order with C function QSORT | |
310 | qsort((void*)rnd,numEvents,sizeof(Int_t),comp); | |
311 | do{ | |
312 | for(i=0; i<nentries; i++){ | |
313 | zdcSignal->GetEvent(i); | |
314 | entry = zdcSignal->GetArgs(); | |
315 | if(entry[0] == rnd[iev]){ | |
316 | for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1]; | |
317 | for(j=0; j<7; j++) hitsSpec[j] = entry[j+3]; | |
48642b09 | 318 | // |
8309c1ab | 319 | Float_t lightQ = hitsSpec[4]; |
320 | Float_t lightC = hitsSpec[5]; | |
78d18275 | 321 | AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f", |
8309c1ab | 322 | volume[0], volume[1], lightQ, lightC)); |
48642b09 | 323 | //printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f", |
324 | // volume[0], volume[1], lightQ, lightC); | |
8309c1ab | 325 | if (volume[0] < 3) { // ZN or ZP |
326 | pm[volume[0]-1][0] += lightC; | |
327 | pm[volume[0]-1][volume[1]] += lightQ; | |
48642b09 | 328 | //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0], |
329 | // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]); | |
330 | } | |
331 | else { | |
332 | if (volume[1] == 1) pm[2][1] += lightC; // ZEM 1 | |
333 | else pm[2][2] += lightQ; // ZEM 2 | |
334 | //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]); | |
335 | } | |
8309c1ab | 336 | } |
337 | else if(entry[0] > rnd[iev]){ | |
338 | iev++; | |
339 | continue; | |
340 | } | |
341 | } | |
342 | }while(iev<numEvents); | |
343 | ||
344 | file->Close(); | |
345 | delete file; | |
346 | } | |
347 | ||
348 | ||
349 | //_____________________________________________________________________________ | |
350 | Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light, | |
351 | Int_t Res) const | |
352 | { | |
48642b09 | 353 | // Evaluation of the ADC channel corresponding to the light yield Light |
8a2624cc | 354 | Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]); |
78d18275 | 355 | //printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,ADCch); |
7f73eb6b | 356 | |
8a2624cc | 357 | return vADCch; |
48642b09 | 358 | } |
8309c1ab | 359 | |
48642b09 | 360 | //_____________________________________________________________________________ |
361 | Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const | |
362 | { | |
8a2624cc | 363 | // Returns a pedestal for detector det, PM quad, channel with res. |
364 | // | |
abf60186 | 365 | Float_t PedValue; |
dbc8d7fc | 366 | |
abf60186 | 367 | // Normal run |
368 | if(fIsCalibration == 0){ | |
369 | Float_t meanPed, Pedwidth; | |
370 | Int_t index=0; | |
371 | if(Det==1|| Det==2) index = 10*(Det-1)+Quad+5*Res; // ZN1, ZP1 | |
372 | else if(Det==3) index = 10*(Det-1)+(Quad-1)+Res; // ZEM | |
373 | else if(Det==4|| Det==5) index = 10*(Det-2)+Quad+5*Res+4; // ZN2, ZP2 | |
374 | meanPed = fCalibData->GetMeanPed(index); | |
375 | Pedwidth = fCalibData->GetMeanPedWidth(index); | |
376 | PedValue = gRandom->Gaus(meanPed,Pedwidth); | |
377 | // | |
378 | /*printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n", | |
379 | Det, Quad, index,(Int_t) PedValue); // Chiara debugging! | |
380 | */ | |
381 | } | |
48642b09 | 382 | |
7f73eb6b | 383 | // To create calibration object |
abf60186 | 384 | else PedValue = gRandom->Gaus((40.+10.*gRandom->Rndm()),5.); |
385 | ||
dbc8d7fc | 386 | |
abf60186 | 387 | return (Int_t) PedValue; |
8309c1ab | 388 | } |
389 | ||
390 | //_____________________________________________________________________________ | |
78d18275 | 391 | AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri) |
8309c1ab | 392 | { |
8309c1ab | 393 | |
78d18275 | 394 | Bool_t deleteManager = kFALSE; |
48642b09 | 395 | |
78d18275 | 396 | AliCDBManager *manager = AliCDBManager::Instance(); |
397 | AliCDBStorage *defstorage = manager->GetDefaultStorage(); | |
48642b09 | 398 | |
78d18275 | 399 | if(!defstorage || !(defstorage->Contains("ZDC"))){ |
400 | AliWarning("No default storage set or default storage doesn't contain ZDC!"); | |
401 | manager->SetDefaultStorage(uri); | |
402 | deleteManager = kTRUE; | |
403 | } | |
404 | ||
405 | AliCDBStorage *storage = manager->GetDefaultStorage(); | |
406 | ||
407 | if(deleteManager){ | |
408 | AliCDBManager::Instance()->UnsetDefaultStorage(); | |
409 | defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy() | |
410 | } | |
411 | ||
412 | return storage; | |
413 | } | |
48642b09 | 414 | |
78d18275 | 415 | //_____________________________________________________________________________ |
7f73eb6b | 416 | AliZDCCalibData* AliZDCDigitizer::GetCalibData() const |
78d18275 | 417 | { |
4fda3ba1 | 418 | |
419 | // Getting calibration object for ZDC set | |
420 | ||
421 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data"); | |
78d18275 | 422 | AliZDCCalibData *calibdata = (AliZDCCalibData*) entry->GetObject(); |
4fda3ba1 | 423 | |
424 | if (!calibdata) AliWarning("No calibration data from calibration database !"); | |
8309c1ab | 425 | |
78d18275 | 426 | return calibdata; |
8309c1ab | 427 | } |
4fda3ba1 | 428 |