]>
Commit | Line | Data |
---|---|---|
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 | // class for ZDC reconstruction // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | ||
25 | #include <TF1.h> | |
26 | ||
27 | #include "AliRunLoader.h" | |
28 | #include "AliRawReader.h" | |
29 | #include "AliESD.h" | |
30 | #include "AliZDCDigit.h" | |
31 | #include "AliZDCRawStream.h" | |
32 | #include "AliZDCReco.h" | |
33 | #include "AliZDCReconstructor.h" | |
34 | #include "AliZDCCalibData.h" | |
35 | ||
36 | ||
37 | ClassImp(AliZDCReconstructor) | |
38 | ||
39 | ||
40 | //_____________________________________________________________________________ | |
41 | AliZDCReconstructor:: AliZDCReconstructor() : | |
42 | ||
43 | fZNCen (new TF1("fZNCen", | |
44 | "(-2.287920+sqrt(2.287920*2.287920-4*(-0.007629)*(11.921710-x)))/(2*(-0.007629))",0.,164.)), | |
45 | fZNPer (new TF1("fZNPer", | |
46 | "(-37.812280-sqrt(37.812280*37.812280-4*(-0.190932)*(-1709.249672-x)))/(2*(-0.190932))",0.,164.)), | |
47 | fZPCen (new TF1("fZPCen", | |
48 | "(-1.321353+sqrt(1.321353*1.321353-4*(-0.007283)*(3.550697-x)))/(2*(-0.007283))",0.,60.)), | |
49 | fZPPer (new TF1("fZPPer", | |
50 | "(-42.643308-sqrt(42.643308*42.643308-4*(-0.310786)*(-1402.945615-x)))/(2*(-0.310786))",0.,60.)), | |
51 | fZDCCen (new TF1("fZDCCen", | |
52 | "(-1.934991+sqrt(1.934991*1.934991-4*(-0.004080)*(15.111124-x)))/(2*(-0.004080))",0.,225.)), | |
53 | fZDCPer (new TF1("fZDCPer", | |
54 | "(-34.380639-sqrt(34.380639*34.380639-4*(-0.104251)*(-2612.189017-x)))/(2*(-0.104251))",0.,225.)), | |
55 | fbCen (new TF1("fbCen","-0.056923+0.079703*x-0.0004301*x*x+0.000001366*x*x*x",0.,220.)), | |
56 | fbPer (new TF1("fbPer","17.943998-0.046846*x+0.000074*x*x",0.,220.)), | |
57 | fZEMn (new TF1("fZEMn","126.2-0.05399*x+0.000005679*x*x",0.,4000.)), | |
58 | fZEMp (new TF1("fZEMp","82.49-0.03611*x+0.00000385*x*x",0.,4000.)), | |
59 | fZEMsp (new TF1("fZEMsp","208.7-0.09006*x+0.000009526*x*x",0.,4000.)), | |
60 | fZEMb (new TF1("fZEMb", | |
61 | "16.06-0.01633*x+1.44e-5*x*x-6.778e-9*x*x*x+1.438e-12*x*x*x*x-1.112e-16*x*x*x*x*x",0.,4000.)), | |
62 | fCalibData(GetCalibData()) | |
63 | ||
64 | { | |
65 | // **** Default constructor | |
66 | ||
67 | } | |
68 | ||
69 | ||
70 | //_____________________________________________________________________________ | |
71 | AliZDCReconstructor::~AliZDCReconstructor() | |
72 | { | |
73 | // destructor | |
74 | ||
75 | delete fZNCen; | |
76 | delete fZNPer; | |
77 | delete fZPCen; | |
78 | delete fZPPer; | |
79 | delete fZDCCen; | |
80 | delete fZDCPer; | |
81 | delete fbCen; | |
82 | delete fbPer; | |
83 | delete fZEMn; | |
84 | delete fZEMp; | |
85 | delete fZEMsp; | |
86 | delete fZEMb; | |
87 | } | |
88 | ||
89 | ||
90 | //_____________________________________________________________________________ | |
91 | void AliZDCReconstructor::Reconstruct(AliRunLoader* runLoader) const | |
92 | { | |
93 | // *** Local ZDC reconstruction for digits | |
94 | ||
95 | Float_t meanPed[47]; | |
96 | for(Int_t jj=0; jj<47; jj++) meanPed[jj] = fCalibData->GetMeanPed(jj); | |
97 | ||
98 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
99 | if (!loader) return; | |
100 | loader->LoadDigits("read"); | |
101 | loader->LoadRecPoints("recreate"); | |
102 | AliZDCDigit digit; | |
103 | AliZDCDigit* pdigit = &digit; | |
104 | ||
105 | // Event loop | |
106 | for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) { | |
107 | runLoader->GetEvent(iEvent); | |
108 | ||
109 | // load digits | |
110 | loader->LoadDigits(); | |
111 | TTree* treeD = loader->TreeD(); | |
112 | if (!treeD) continue; | |
113 | treeD->SetBranchAddress("ZDC", &pdigit); | |
114 | ||
115 | // loop over digits | |
116 | Float_t zn1corr=0, zp1corr=0, zn2corr=0, zp2corr=0, zemcorr=0; | |
117 | for (Int_t iDigit = 0; iDigit < treeD->GetEntries(); iDigit++) { | |
118 | treeD->GetEntry(iDigit); | |
119 | if (!pdigit) continue; | |
120 | ||
121 | if(digit.GetSector(0) == 1) | |
122 | zn1corr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)]); // high gain ZN1 ADCs | |
123 | else if(digit.GetSector(0) == 2) | |
124 | zp1corr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+10]); // high gain ZP1 ADCs | |
125 | else if(digit.GetSector(0) == 3){ | |
126 | if(digit.GetSector(1)==1) | |
127 | zemcorr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+20]); // high gain ZEM1 ADCs | |
128 | else if(digit.GetSector(1)==2) | |
129 | zemcorr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+22]); // high gain ZEM2 ADCs | |
130 | } | |
131 | else if(digit.GetSector(0) == 4) | |
132 | zn2corr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+24]); // high gain ZN2 ADCs | |
133 | else if(digit.GetSector(0) == 5) | |
134 | zp2corr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+34]); // high gain ZP2 ADCs | |
135 | } | |
136 | if(zn1corr<0) zn1corr=0; | |
137 | if(zp1corr<0) zp1corr=0; | |
138 | if(zn2corr<0) zn2corr=0; | |
139 | if(zp2corr<0) zp2corr=0; | |
140 | if(zemcorr<0) zemcorr=0; | |
141 | ||
142 | // reconstruct the event | |
143 | //printf("\n \t ZDCReco from digits-> Ev.#%d ZN = %.0f, ZP = %.0f, ZEM = %.0f\n",iEvent,zncorr,zpcorr,zemcorr); | |
144 | ReconstructEvent(loader, zn1corr, zp1corr, zemcorr, zn2corr, zp2corr); | |
145 | } | |
146 | ||
147 | loader->UnloadDigits(); | |
148 | loader->UnloadRecPoints(); | |
149 | } | |
150 | ||
151 | //_____________________________________________________________________________ | |
152 | void AliZDCReconstructor::Reconstruct(AliRunLoader* runLoader, | |
153 | AliRawReader* rawReader) const | |
154 | { | |
155 | // *** Local ZDC reconstruction for raw data | |
156 | ||
157 | Float_t meanPed[47]; | |
158 | for(Int_t jj=0; jj<47; jj++) meanPed[jj] = fCalibData->GetMeanPed(jj); | |
159 | ||
160 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
161 | if (!loader) return; | |
162 | loader->LoadRecPoints("recreate"); | |
163 | // Event loop | |
164 | Int_t iEvent = 0; | |
165 | while (rawReader->NextEvent()) { | |
166 | runLoader->GetEvent(iEvent++); | |
167 | ||
168 | // loop over raw data digits | |
169 | Float_t zn1corr=0, zp1corr=0, zn2corr=0, zp2corr=0,zemcorr=0; | |
170 | AliZDCRawStream digit(rawReader); | |
171 | while (digit.Next()) { | |
172 | if(digit.IsADCDataWord()){ | |
173 | if(digit.GetADCGain() == 0){ | |
174 | if(digit.GetSector(0) == 1) | |
175 | zn1corr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)]); // high gain ZN1 ADCs; | |
176 | else if(digit.GetSector(0) == 2) | |
177 | zp1corr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+10]); // high gain ZP1 ADCs; | |
178 | else if(digit.GetSector(0) == 3) | |
179 | if(digit.GetSector(1)==1) | |
180 | zemcorr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+20]); // high gain ZEM1 ADCs | |
181 | else if(digit.GetSector(1)==2) | |
182 | zemcorr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+22]); // high gain ZEM2 ADCs | |
183 | else if(digit.GetSector(0) == 4) | |
184 | zn2corr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+24]); // high gain ZN2 ADCs; | |
185 | else if(digit.GetSector(0) == 5) | |
186 | zp2corr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+34]); // high gain ZP2 ADCs; | |
187 | } | |
188 | } | |
189 | } | |
190 | if(zn1corr<0) zn1corr=0; | |
191 | if(zp1corr<0) zp1corr=0; | |
192 | if(zn2corr<0) zn2corr=0; | |
193 | if(zp2corr<0) zp2corr=0; | |
194 | if(zemcorr<0) zemcorr=0; | |
195 | ||
196 | // reconstruct the event | |
197 | //printf("\n\t ZDCReco from raw-> Ev.#%d ZN = %.0f, ZP = %.0f, ZEM = %.0f\n",iEvent,zncorr,zpcorr,zemcorr); | |
198 | ReconstructEvent(loader, zn1corr, zp1corr, zemcorr, zn2corr, zp2corr); | |
199 | } | |
200 | ||
201 | loader->UnloadRecPoints(); | |
202 | } | |
203 | ||
204 | //_____________________________________________________________________________ | |
205 | void AliZDCReconstructor::ReconstructEvent(AliLoader* loader, Float_t zn1corr, | |
206 | Float_t zp1corr, Float_t zemcorr, Float_t zn2corr, Float_t zp2corr) const | |
207 | { | |
208 | // ***** Reconstruct one event | |
209 | ||
210 | // --- ADCchannel -> photoelectrons | |
211 | // NB-> PM gain = 10^(5), ADC resolution = 6.4*10^(-7) | |
212 | // Move to V965 (E.S.,15/09/04) NB-> PM gain = 10^(5), ADC resolution = 8*10^(-7) | |
213 | Float_t zn1phe, zp1phe, zemphe, zn2phe, zp2phe, convFactor = 0.08; | |
214 | zn1phe = zn1corr/convFactor; | |
215 | zp1phe = zp1corr/convFactor; | |
216 | zemphe = zemcorr/convFactor; | |
217 | zn2phe = zn2corr/convFactor; | |
218 | zp2phe = zp2corr/convFactor; | |
219 | //if AliDebug(1,Form("\n znphe = %f, zpphe = %f, zemphe = %f\n",znphe, zpphe, zemphe); | |
220 | ||
221 | // --- Energy calibration | |
222 | // Conversion factors for hadronic ZDCs goes from phe yield to TRUE | |
223 | // incident energy (conversion from GeV to TeV is included); while for EM | |
224 | // calos conversion is from light yield to detected energy calculated by | |
225 | // GEANT NB -> ZN and ZP conversion factors are constant since incident | |
226 | // spectators have all the same energy, ZEM energy is obtained through a | |
227 | // fit over the whole range of incident particle energies | |
228 | // (obtained with full HIJING simulations) | |
229 | Float_t zn1energy, zp1energy, zemenergy, zdc1energy, zn2energy, zp2energy, zdc2energy; | |
230 | Float_t zn1phexTeV=329., zp1phexTeV=369., zn2phexTeV=329., zp2phexTeV=369.; | |
231 | zn1energy = zn1phe/zn1phexTeV; | |
232 | zp1energy = zp1phe/zp1phexTeV; | |
233 | zdc1energy = zn1energy+zp1energy; | |
234 | zn2energy = zn2phe/zn2phexTeV; | |
235 | zp2energy = zp2phe/zp2phexTeV; | |
236 | zdc2energy = zn2energy+zp2energy; | |
237 | zemenergy = -4.81+0.3238*zemphe; | |
238 | if(zemenergy<0) zemenergy=0; | |
239 | // if AliDebug(1,Form(" znenergy = %f TeV, zpenergy = %f TeV, zdcenergy = %f GeV, " | |
240 | // "\n zemenergy = %f TeV\n", znenergy, zpenergy, | |
241 | // zdcenergy, zemenergy); | |
242 | // if(zdcenergy==0) | |
243 | // if AliDebug(1,Form("\n\n ### ATTENZIONE!!! -> ev# %d: znenergy = %f TeV, zpenergy = %f TeV, zdcenergy = %f GeV, " | |
244 | // " zemenergy = %f TeV\n\n", fMerger->EvNum(), znenergy, zpenergy, zdcenergy, zemenergy); | |
245 | ||
246 | // --- Number of detected spectator nucleons | |
247 | // *** N.B. -> It works only in Pb-Pb | |
248 | Int_t nDetSpecNLeft, nDetSpecPLeft, nDetSpecNRight, nDetSpecPRight; | |
249 | nDetSpecNLeft = (Int_t) (zn1energy/2.760); | |
250 | nDetSpecPLeft = (Int_t) (zp1energy/2.760); | |
251 | nDetSpecNRight = (Int_t) (zn2energy/2.760); | |
252 | nDetSpecPRight = (Int_t) (zp2energy/2.760); | |
253 | ||
254 | // --- Number of generated spectator nucleons (from HIJING parameterization) | |
255 | // *** N.B. -> Only one side!!! | |
256 | Int_t nGenSpecN=0, nGenSpecP=0, nGenSpec=0; | |
257 | Double_t impPar=0; | |
258 | // Cut value for Ezem (GeV) | |
259 | // ### Results from production -> 0<b<18 fm (Apr 2002) | |
260 | Float_t eZEMCut = 420.; | |
261 | Float_t deltaEZEMSup = 690.; | |
262 | Float_t deltaEZEMInf = 270.; | |
263 | if(zemenergy > (eZEMCut+deltaEZEMSup)){ | |
264 | nGenSpecN = (Int_t) (fZNCen->Eval(zn1energy)); | |
265 | nGenSpecP = (Int_t) (fZPCen->Eval(zp1energy)); | |
266 | nGenSpec = (Int_t) (fZDCCen->Eval(zdc1energy)); | |
267 | impPar = fbCen->Eval(zdc1energy); | |
268 | } | |
269 | else if(zemenergy < (eZEMCut-deltaEZEMInf)){ | |
270 | nGenSpecN = (Int_t) (fZNPer->Eval(zn1energy)); | |
271 | nGenSpecP = (Int_t) (fZPPer->Eval(zp1energy)); | |
272 | nGenSpec = (Int_t) (fZDCPer->Eval(zdc1energy)); | |
273 | impPar = fbPer->Eval(zdc1energy); | |
274 | } | |
275 | else if(zemenergy >= (eZEMCut-deltaEZEMInf) && zemenergy <= (eZEMCut+deltaEZEMSup)){ | |
276 | nGenSpecN = (Int_t) (fZEMn->Eval(zemenergy)); | |
277 | nGenSpecP = (Int_t) (fZEMp->Eval(zemenergy)); | |
278 | nGenSpec = (Int_t)(fZEMsp->Eval(zemenergy)); | |
279 | impPar = fZEMb->Eval(zemenergy); | |
280 | } | |
281 | // ### Results from production -> 0<b<18 fm (Apr 2002) | |
282 | if(zn1energy>162.) nGenSpecN = (Int_t) (fZEMn->Eval(zemenergy)); | |
283 | if(zp1energy>59.75) nGenSpecP = (Int_t) (fZEMp->Eval(zemenergy)); | |
284 | if(zdc1energy>221.5) nGenSpec = (Int_t)(fZEMsp->Eval(zemenergy)); | |
285 | if(zdc1energy>220.) impPar = fZEMb->Eval(zemenergy); | |
286 | ||
287 | if(nGenSpecN>125) nGenSpecN=125; | |
288 | else if(nGenSpecN<0) nGenSpecN=0; | |
289 | if(nGenSpecP>82) nGenSpecP=82; | |
290 | else if(nGenSpecP<0) nGenSpecP=0; | |
291 | if(nGenSpec>207) nGenSpec=207; | |
292 | else if(nGenSpec<0) nGenSpec=0; | |
293 | ||
294 | // --- Number of generated participants (from HIJING parameterization) | |
295 | Int_t nPart, nPartTot; | |
296 | nPart = 207-nGenSpecN-nGenSpecP; | |
297 | nPartTot = 207-nGenSpec; | |
298 | //printf("\t ZDCeventReco-> ZNEn = %.0f GeV, ZPEn = %.0f GeV, ZEMEn = %.0f GeV\n", | |
299 | // znenergy, zpenergy, zemenergy); | |
300 | ||
301 | // create the output tree | |
302 | loader->MakeTree("R"); | |
303 | TTree* treeR = loader->TreeR(); | |
304 | AliZDCReco reco(zn1energy, zp1energy, zdc1energy, zemenergy, | |
305 | zn2energy, zp2energy, zdc2energy, | |
306 | nDetSpecNLeft, nDetSpecPLeft, nDetSpecNRight, nDetSpecPRight, | |
307 | nGenSpecN, nGenSpecP, nGenSpec,nPartTot, impPar); | |
308 | AliZDCReco* preco = &reco; | |
309 | const Int_t kBufferSize = 4000; | |
310 | treeR->Branch("ZDC", "AliZDCReco", &preco, kBufferSize); | |
311 | ||
312 | // write the output tree | |
313 | treeR->Fill(); | |
314 | loader->WriteRecPoints("OVERWRITE"); | |
315 | } | |
316 | ||
317 | //_____________________________________________________________________________ | |
318 | void AliZDCReconstructor::FillESD(AliRunLoader* runLoader, | |
319 | AliESD* esd) const | |
320 | { | |
321 | // fill energies and number of participants to the ESD | |
322 | ||
323 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
324 | if (!loader) return; | |
325 | loader->LoadRecPoints(); | |
326 | ||
327 | TTree* treeR = loader->TreeR(); | |
328 | if (!treeR) return; | |
329 | AliZDCReco reco; | |
330 | AliZDCReco* preco = &reco; | |
331 | treeR->SetBranchAddress("ZDC", &preco); | |
332 | ||
333 | treeR->GetEntry(0); | |
334 | esd->SetZDC(reco.GetZN1energy(), reco.GetZP1energy(), reco.GetZEMenergy(), | |
335 | reco.GetZN2energy(), reco.GetZP2energy(), reco.GetNPart()); | |
336 | ||
337 | loader->UnloadRecPoints(); | |
338 | } | |
339 | ||
340 | //_____________________________________________________________________________ | |
341 | AliCDBStorage* AliZDCReconstructor::SetStorage(const char *uri) | |
342 | { | |
343 | // Setting the storage | |
344 | ||
345 | Bool_t deleteManager = kFALSE; | |
346 | ||
347 | AliCDBManager *manager = AliCDBManager::Instance(); | |
348 | AliCDBStorage *defstorage = manager->GetDefaultStorage(); | |
349 | ||
350 | if(!defstorage || !(defstorage->Contains("ZDC"))){ | |
351 | AliWarning("No default storage set or default storage doesn't contain ZDC!"); | |
352 | manager->SetDefaultStorage(uri); | |
353 | deleteManager = kTRUE; | |
354 | } | |
355 | ||
356 | AliCDBStorage *storage = manager->GetDefaultStorage(); | |
357 | ||
358 | if(deleteManager){ | |
359 | AliCDBManager::Instance()->UnsetDefaultStorage(); | |
360 | defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy() | |
361 | } | |
362 | ||
363 | return storage; | |
364 | } | |
365 | ||
366 | //_____________________________________________________________________________ | |
367 | AliZDCCalibData* AliZDCReconstructor::GetCalibData() const | |
368 | { | |
369 | ||
370 | // Getting calibration object for ZDC set | |
371 | ||
372 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data"); | |
373 | if(!entry) AliFatal("No calibration data loaded!"); | |
374 | ||
375 | AliZDCCalibData *calibdata = dynamic_cast<AliZDCCalibData*> (entry->GetObject()); | |
376 | if(!calibdata) AliFatal("Wrong calibration object in calibration file!"); | |
377 | ||
378 | return calibdata; | |
379 | } |