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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 "AliCDBStorage.h" |
41 | #include "AliCDBEntry.h" | |
8309c1ab | 42 | #include "AliZDCSDigit.h" |
43 | #include "AliZDCDigit.h" | |
44 | #include "AliZDCFragment.h" | |
45 | #include "AliZDCDigitizer.h" | |
48642b09 | 46 | #include "AliZDCCalibData.h" |
8309c1ab | 47 | |
48 | ClassImp(AliZDCDigitizer) | |
49 | ||
50 | ||
51 | //____________________________________________________________________________ | |
52 | AliZDCDigitizer::AliZDCDigitizer() | |
53 | { | |
54 | // Default constructor | |
55 | ||
56 | } | |
57 | ||
58 | //____________________________________________________________________________ | |
59 | AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager): | |
60 | AliDigitizer(manager) | |
61 | { | |
78d18275 | 62 | |
48642b09 | 63 | // Constructor |
78d18275 | 64 | fStorage = SetStorage("local://$ALICE_ROOT"); |
65 | ||
66 | // Get calibration data | |
7f73eb6b | 67 | fCalibData = GetCalibData(); |
78d18275 | 68 | |
8309c1ab | 69 | } |
70 | ||
71 | //____________________________________________________________________________ | |
72 | AliZDCDigitizer::~AliZDCDigitizer() | |
73 | { | |
74 | // Destructor | |
75 | ||
76 | } | |
77 | ||
78 | ||
79 | //____________________________________________________________________________ | |
80 | Bool_t AliZDCDigitizer::Init() | |
81 | { | |
48642b09 | 82 | // Initialize the digitizer |
83 | // NB -> PM gain vs. HV & ADC resolutions will move to DCDB *************** | |
7f73eb6b | 84 | for(Int_t j = 0; j < 5; j++){ |
85 | fPMGain[0][j] = 50000.; | |
86 | fPMGain[1][j] = 100000.; | |
87 | fPMGain[2][j] = 100000.; | |
a017f01b | 88 | fPMGain[3][j] = 50000.; |
89 | fPMGain[4][j] = 100000.; | |
90 | fPMGain[5][j] = 100000.; | |
7f73eb6b | 91 | } |
92 | // ADC Caen V965 | |
93 | fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh | |
94 | fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh | |
8309c1ab | 95 | |
96 | return kTRUE; | |
97 | } | |
98 | ||
99 | //____________________________________________________________________________ | |
100 | void AliZDCDigitizer::Exec(Option_t* /*option*/) | |
101 | { | |
48642b09 | 102 | // Execute digitization |
8309c1ab | 103 | |
7f73eb6b | 104 | Float_t pm[5][5]; // !!! 2nd ZDC set added (needed for trigger purposes!) |
105 | // *** 1st 3 arrays are digits from REAL (simulated) hits | |
106 | // *** last 2 are copied from simulated digits | |
107 | // --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4] | |
108 | // --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4] | |
48642b09 | 109 | // --- pm[2][...] = light in ZEM [x, 1, 2, x, x] |
7f73eb6b | 110 | // --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW! |
111 | // --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW! | |
112 | ||
113 | for (Int_t iSector1=0; iSector1<5; iSector1++) | |
114 | for (Int_t iSector2=0; iSector2<5; iSector2++) { | |
8309c1ab | 115 | pm[iSector1][iSector2] = 0; |
116 | } | |
8309c1ab | 117 | |
118 | // impact parameter and number of spectators | |
119 | Float_t impPar = -1; | |
120 | Int_t specN = 0; | |
121 | Int_t specP = 0; | |
122 | ||
123 | // loop over input streams | |
7f73eb6b | 124 | for (Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++) { |
8309c1ab | 125 | |
126 | // get run loader and ZDC loader | |
127 | AliRunLoader* runLoader = | |
128 | AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); | |
129 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
130 | if (!loader) continue; | |
131 | ||
132 | // load sdigits | |
133 | loader->LoadSDigits(); | |
134 | TTree* treeS = loader->TreeS(); | |
135 | if (!treeS) continue; | |
136 | AliZDCSDigit sdigit; | |
137 | AliZDCSDigit* psdigit = &sdigit; | |
138 | treeS->SetBranchAddress("ZDC", &psdigit); | |
139 | ||
140 | // loop over sdigits | |
7f73eb6b | 141 | for (Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++) { |
8309c1ab | 142 | treeS->GetEntry(iSDigit); |
7f73eb6b | 143 | // |
8309c1ab | 144 | if (!psdigit) continue; |
8309c1ab | 145 | if ((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)) { |
146 | AliError(Form("\nsector[0] = %d, sector[1] = %d\n", | |
147 | sdigit.GetSector(0), sdigit.GetSector(1))); | |
148 | continue; | |
149 | } | |
7f73eb6b | 150 | // |
48642b09 | 151 | pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM(); |
7f73eb6b | 152 | /*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n", |
48642b09 | 153 | sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1, |
154 | sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging! | |
7f73eb6b | 155 | */ |
8309c1ab | 156 | } |
157 | ||
8309c1ab | 158 | loader->UnloadSDigits(); |
159 | ||
160 | // get the impact parameter and the number of spectators in case of hijing | |
161 | if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); | |
162 | AliHeader* header = runLoader->GetAliRun()->GetHeader(); | |
163 | if (!header) continue; | |
164 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
165 | if (!genHeader) continue; | |
166 | if (!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue; | |
167 | impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter(); | |
85a96223 | 168 | // |
169 | specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn(); | |
170 | specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp(); | |
78d18275 | 171 | AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", |
8309c1ab | 172 | impPar, specN, specP)); |
7f73eb6b | 173 | printf("\n\t AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", impPar, specN, specP); |
8309c1ab | 174 | } |
175 | ||
176 | // add spectators | |
177 | if (impPar >= 0) { | |
178 | Int_t freeSpecN, freeSpecP; | |
179 | Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP); | |
78d18275 | 180 | printf("\n\t AliZDCDigitizer ---- Adding signal for %d free spectator n\n",freeSpecN); |
8309c1ab | 181 | SpectatorSignal(1, freeSpecN, pm); |
78d18275 | 182 | printf("\t AliZDCDigitizer ---- Adding signal for %d free spectator p\n\n",freeSpecP); |
8309c1ab | 183 | SpectatorSignal(2, freeSpecP, pm); |
184 | } | |
185 | ||
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]; | |
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; | |
212 | for (Int_t res=0; res<2; res++){ | |
48642b09 | 213 | digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res) |
214 | + Pedestal(sector[0], sector[1], res); | |
7f73eb6b | 215 | } |
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! | |
8309c1ab | 218 | new(pdigit) AliZDCDigit(sector, digi); |
219 | treeD->Fill(); | |
7f73eb6b | 220 | // |
221 | // --- Adding digits for 2nd ZDC set (left side w.r.t. IP) --- | |
222 | // --- they are copied from right ZDC digits | |
223 | if(sector[0]==1 || sector[0]==2){ | |
224 | sectorL[0] = sector[0]+3; | |
225 | sectorL[1] = sector[1]; | |
226 | for (Int_t res=0; res<2; res++){ | |
227 | digiL[res] = Phe2ADCch(sectorL[0], sectorL[1], pm[sector[0]-1][sector[1]], res) | |
228 | + Pedestal(sectorL[0], sectorL[1], res); | |
229 | } | |
230 | //printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", | |
231 | // sectorL[0], sectorL[1], digiL[0], digiL[1]); // Chiara debugging! | |
232 | new(pdigit) AliZDCDigit(sectorL, digiL); | |
233 | } | |
234 | // | |
235 | treeD->Fill(); | |
8309c1ab | 236 | } |
237 | ||
238 | // write the output tree | |
239 | loader->WriteDigits("OVERWRITE"); | |
240 | loader->UnloadDigits(); | |
241 | } | |
242 | ||
243 | ||
244 | //_____________________________________________________________________________ | |
245 | void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP, | |
246 | Int_t &freeSpecN, Int_t &freeSpecP) const | |
247 | { | |
248 | // simulate fragmentation of spectators | |
249 | ||
250 | Int_t zz[100], nn[100]; | |
251 | AliZDCFragment frag(impPar); | |
252 | for (Int_t j=0; j<=99; j++){ | |
253 | zz[j] =0; | |
254 | nn[j] =0; | |
255 | } | |
256 | ||
257 | // Fragments generation | |
258 | Int_t nAlpha; | |
259 | frag.GenerateIMF(zz, nAlpha); | |
260 | ||
261 | // Attach neutrons | |
262 | Int_t ztot=0; | |
263 | Int_t ntot=0; | |
264 | frag.AttachNeutrons(zz, nn, ztot, ntot); | |
265 | freeSpecN = specN-ntot-2*nAlpha; | |
266 | freeSpecP = specP-ztot-2*nAlpha; | |
267 | if(freeSpecN<0) freeSpecN=0; | |
268 | if(freeSpecP<0) freeSpecP=0; | |
269 | AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP)); | |
270 | } | |
271 | ||
272 | //_____________________________________________________________________________ | |
273 | void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents, | |
274 | Float_t pm[3][5]) const | |
275 | { | |
276 | // add signal of the spectators | |
277 | ||
278 | TFile* file = NULL; | |
279 | if (SpecType == 1) { // --- Signal for spectator neutrons | |
280 | file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root"); | |
281 | } else if (SpecType == 2) { // --- Signal for spectator protons | |
282 | file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root"); | |
283 | } | |
284 | if (!file || !file->IsOpen()) { | |
285 | AliError("Opening of file failed"); | |
286 | return; | |
287 | } | |
288 | ||
289 | TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal"); | |
290 | Int_t nentries = (Int_t) zdcSignal->GetEntries(); | |
291 | ||
292 | Float_t *entry, hitsSpec[7]; | |
293 | Int_t pl, i, j, k, iev=0, rnd[125], volume[2]; | |
48642b09 | 294 | for(pl=0;pl<125;pl++) rnd[pl] = 0; |
8309c1ab | 295 | if (numEvents > 125) { |
296 | AliWarning(Form("numEvents (%d) is larger than 125", numEvents)); | |
297 | numEvents = 125; | |
298 | } | |
299 | for(pl=0;pl<numEvents;pl++){ | |
300 | rnd[pl] = (Int_t) (9999*gRandom->Rndm()); | |
85a96223 | 301 | if(rnd[pl] >= 9999) rnd[pl] = 9998; |
8309c1ab | 302 | //printf(" rnd[%d] = %d\n",pl,rnd[pl]); |
303 | } | |
304 | // Sorting vector in ascending order with C function QSORT | |
305 | qsort((void*)rnd,numEvents,sizeof(Int_t),comp); | |
306 | do{ | |
307 | for(i=0; i<nentries; i++){ | |
308 | zdcSignal->GetEvent(i); | |
309 | entry = zdcSignal->GetArgs(); | |
310 | if(entry[0] == rnd[iev]){ | |
311 | for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1]; | |
312 | for(j=0; j<7; j++) hitsSpec[j] = entry[j+3]; | |
48642b09 | 313 | // |
8309c1ab | 314 | Float_t lightQ = hitsSpec[4]; |
315 | Float_t lightC = hitsSpec[5]; | |
78d18275 | 316 | AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f", |
8309c1ab | 317 | volume[0], volume[1], lightQ, lightC)); |
48642b09 | 318 | //printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f", |
319 | // volume[0], volume[1], lightQ, lightC); | |
8309c1ab | 320 | if (volume[0] < 3) { // ZN or ZP |
321 | pm[volume[0]-1][0] += lightC; | |
322 | pm[volume[0]-1][volume[1]] += lightQ; | |
48642b09 | 323 | //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0], |
324 | // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]); | |
325 | } | |
326 | else { | |
327 | if (volume[1] == 1) pm[2][1] += lightC; // ZEM 1 | |
328 | else pm[2][2] += lightQ; // ZEM 2 | |
329 | //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]); | |
330 | } | |
8309c1ab | 331 | } |
332 | else if(entry[0] > rnd[iev]){ | |
333 | iev++; | |
334 | continue; | |
335 | } | |
336 | } | |
337 | }while(iev<numEvents); | |
338 | ||
339 | file->Close(); | |
340 | delete file; | |
341 | } | |
342 | ||
343 | ||
344 | //_____________________________________________________________________________ | |
345 | Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light, | |
346 | Int_t Res) const | |
347 | { | |
48642b09 | 348 | // Evaluation of the ADC channel corresponding to the light yield Light |
349 | Int_t ADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]); | |
78d18275 | 350 | //printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,ADCch); |
7f73eb6b | 351 | |
48642b09 | 352 | return ADCch; |
353 | } | |
8309c1ab | 354 | |
48642b09 | 355 | //_____________________________________________________________________________ |
356 | Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const | |
357 | { | |
48642b09 | 358 | |
dbc8d7fc | 359 | Float_t meanPed; |
78d18275 | 360 | if(Det != 3) meanPed = fCalibData->GetMeanPed(10*(Det-1)+Quad+5*Res); |
361 | else meanPed = fCalibData->GetMeanPed(10*(Det-1)+Quad+1*Res); | |
dbc8d7fc | 362 | |
78d18275 | 363 | //printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n", |
364 | // Det, Quad, Res,10*(Det-1)+Quad+5*Res,(Int_t) meanPed); // Chiara debugging! | |
48642b09 | 365 | |
7f73eb6b | 366 | // To create calibration object |
dbc8d7fc | 367 | /*Float_t meanPed; |
7f73eb6b | 368 | meanPed = gRandom->Gaus((40.+10.*gRandom->Rndm()),5.); |
dbc8d7fc | 369 | */ |
370 | ||
48642b09 | 371 | return (Int_t) meanPed; |
8309c1ab | 372 | } |
373 | ||
374 | //_____________________________________________________________________________ | |
78d18275 | 375 | AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri) |
8309c1ab | 376 | { |
8309c1ab | 377 | |
78d18275 | 378 | Bool_t deleteManager = kFALSE; |
48642b09 | 379 | |
78d18275 | 380 | AliCDBManager *manager = AliCDBManager::Instance(); |
381 | AliCDBStorage *defstorage = manager->GetDefaultStorage(); | |
48642b09 | 382 | |
78d18275 | 383 | if(!defstorage || !(defstorage->Contains("ZDC"))){ |
384 | AliWarning("No default storage set or default storage doesn't contain ZDC!"); | |
385 | manager->SetDefaultStorage(uri); | |
386 | deleteManager = kTRUE; | |
387 | } | |
388 | ||
389 | AliCDBStorage *storage = manager->GetDefaultStorage(); | |
390 | ||
391 | if(deleteManager){ | |
392 | AliCDBManager::Instance()->UnsetDefaultStorage(); | |
393 | defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy() | |
394 | } | |
395 | ||
396 | return storage; | |
397 | } | |
48642b09 | 398 | |
78d18275 | 399 | //_____________________________________________________________________________ |
7f73eb6b | 400 | AliZDCCalibData* AliZDCDigitizer::GetCalibData() const |
78d18275 | 401 | { |
48642b09 | 402 | |
7f73eb6b | 403 | AliCDBEntry *entry = fStorage->Get("ZDC/Calib/Data",0); |
78d18275 | 404 | AliZDCCalibData *calibdata = (AliZDCCalibData*) entry->GetObject(); |
405 | ||
7f73eb6b | 406 | if (!calibdata) AliWarning("No ZDC calibration data from calibration database!"); |
8309c1ab | 407 | |
78d18275 | 408 | return calibdata; |
8309c1ab | 409 | } |