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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 | // 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" | |
48642b09 | 34 | #include "AliZDCCalibData.h" |
8309c1ab | 35 | |
36 | ||
37 | ClassImp(AliZDCReconstructor) | |
38 | ||
39 | ||
40 | //_____________________________________________________________________________ | |
41 | AliZDCReconstructor:: AliZDCReconstructor() | |
42 | { | |
48642b09 | 43 | // **** Default constructor |
44 | // if(!fStorage) fStorage = AliCDBManager::Instance()->GetStorage("local://DBlocal"); | |
8309c1ab | 45 | |
46 | // --- Number of generated spectator nucleons and impact parameter | |
47 | // -------------------------------------------------------------------------------------------------- | |
8309c1ab | 48 | // [1] ### Results from a new production -> 0<b<18 fm (Apr 2002) |
49 | // Fit results for neutrons (Nspectator n true vs. EZN) | |
50 | fZNCen = new TF1("fZNCen", | |
51 | "(-2.287920+sqrt(2.287920*2.287920-4*(-0.007629)*(11.921710-x)))/(2*(-0.007629))",0.,164.); | |
52 | fZNPer = new TF1("fZNPer", | |
53 | "(-37.812280-sqrt(37.812280*37.812280-4*(-0.190932)*(-1709.249672-x)))/(2*(-0.190932))",0.,164.); | |
54 | // Fit results for protons (Nspectator p true vs. EZP) | |
55 | fZPCen = new TF1("fZPCen", | |
56 | "(-1.321353+sqrt(1.321353*1.321353-4*(-0.007283)*(3.550697-x)))/(2*(-0.007283))",0.,60.); | |
57 | fZPPer = new TF1("fZPPer", | |
58 | "(-42.643308-sqrt(42.643308*42.643308-4*(-0.310786)*(-1402.945615-x)))/(2*(-0.310786))",0.,60.); | |
59 | // Fit results for total number of spectators (Nspectators true vs. EZDC) | |
60 | fZDCCen = new TF1("fZDCCen", | |
61 | "(-1.934991+sqrt(1.934991*1.934991-4*(-0.004080)*(15.111124-x)))/(2*(-0.004080))",0.,225.); | |
62 | fZDCPer = new TF1("fZDCPer", | |
63 | "(-34.380639-sqrt(34.380639*34.380639-4*(-0.104251)*(-2612.189017-x)))/(2*(-0.104251))",0.,225.); | |
64 | // -------------------------------------------------------------------------------------------------- | |
48642b09 | 65 | // Fit results for b (b vs. EZDC) |
8309c1ab | 66 | // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002) |
67 | fbCen = new TF1("fbCen","-0.056923+0.079703*x-0.0004301*x*x+0.000001366*x*x*x",0.,220.); | |
68 | fbPer = new TF1("fbPer","17.943998-0.046846*x+0.000074*x*x",0.,220.); | |
69 | // -------------------------------------------------------------------------------------------------- | |
70 | // Evaluating Nspectators and b from ZEM energy | |
8309c1ab | 71 | // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002) |
72 | fZEMn = new TF1("fZEMn","126.2-0.05399*x+0.000005679*x*x",0.,4000.); | |
73 | fZEMp = new TF1("fZEMp","82.49-0.03611*x+0.00000385*x*x",0.,4000.); | |
74 | fZEMsp = new TF1("fZEMsp","208.7-0.09006*x+0.000009526*x*x",0.,4000.); | |
75 | fZEMb = new TF1("fZEMb","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.); | |
76 | } | |
77 | ||
78 | //_____________________________________________________________________________ | |
79 | AliZDCReconstructor::AliZDCReconstructor(const AliZDCReconstructor& | |
80 | reconstructor): | |
81 | AliReconstructor(reconstructor) | |
82 | { | |
83 | // copy constructor | |
84 | ||
85 | Fatal("AliZDCReconstructor", "copy constructor not implemented"); | |
86 | } | |
87 | ||
88 | //_____________________________________________________________________________ | |
89 | AliZDCReconstructor& AliZDCReconstructor::operator = | |
90 | (const AliZDCReconstructor& /*reconstructor*/) | |
91 | { | |
92 | // assignment operator | |
93 | ||
94 | Fatal("operator =", "assignment operator not implemented"); | |
95 | return *this; | |
96 | } | |
97 | ||
98 | //_____________________________________________________________________________ | |
99 | AliZDCReconstructor::~AliZDCReconstructor() | |
100 | { | |
101 | // destructor | |
102 | ||
103 | delete fZNCen; | |
104 | delete fZNPer; | |
105 | delete fZPCen; | |
106 | delete fZPPer; | |
107 | delete fZDCCen; | |
108 | delete fZDCPer; | |
109 | delete fbCen; | |
110 | delete fbPer; | |
111 | delete fZEMn; | |
112 | delete fZEMp; | |
113 | delete fZEMsp; | |
114 | delete fZEMb; | |
115 | } | |
116 | ||
117 | ||
118 | //_____________________________________________________________________________ | |
119 | void AliZDCReconstructor::Reconstruct(AliRunLoader* runLoader) const | |
120 | { | |
48642b09 | 121 | // *** Local ZDC reconstruction for digits |
122 | ||
123 | // Get calibration data | |
124 | int runNumber = 0; | |
125 | AliZDCCalibData *calibda = GetCalibData(runNumber); | |
126 | ||
127 | Float_t meanPed[47]; | |
128 | for(Int_t jj=0; jj<47; jj++) meanPed[jj] = calibda->GetMeanPed(jj); | |
8309c1ab | 129 | |
130 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
131 | if (!loader) return; | |
132 | loader->LoadDigits("read"); | |
133 | loader->LoadRecPoints("recreate"); | |
134 | AliZDCDigit digit; | |
135 | AliZDCDigit* pdigit = &digit; | |
136 | ||
137 | // Event loop | |
138 | for (Int_t iEvent = 0; iEvent < runLoader->GetNumberOfEvents(); iEvent++) { | |
139 | runLoader->GetEvent(iEvent); | |
140 | ||
141 | // load digits | |
142 | loader->LoadDigits(); | |
143 | TTree* treeD = loader->TreeD(); | |
144 | if (!treeD) continue; | |
145 | treeD->SetBranchAddress("ZDC", &pdigit); | |
146 | ||
147 | // loop over digits | |
48642b09 | 148 | Float_t zncorr=0, zpcorr=0, zemcorr=0; |
8309c1ab | 149 | for (Int_t iDigit = 0; iDigit < treeD->GetEntries(); iDigit++) { |
150 | treeD->GetEntry(iDigit); | |
151 | if (!pdigit) continue; | |
152 | ||
48642b09 | 153 | if(digit.GetSector(0) == 1) |
154 | zncorr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)]); // ped 4 high gain ZN ADCs | |
155 | else if(digit.GetSector(0) == 2) | |
156 | zpcorr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+10]); // ped 4 high gain ZP ADCs | |
157 | else if(digit.GetSector(0) == 3){ | |
158 | if(digit.GetSector(1)==1) zemcorr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+20]); // ped 4 high gain ZEM1 ADCs | |
159 | else if(digit.GetSector(1)==2) zemcorr += (Float_t) (digit.GetADCValue(0)-meanPed[digit.GetSector(1)+22]); // ped 4 high gain ZEM2 ADCs | |
160 | } | |
8309c1ab | 161 | } |
48642b09 | 162 | if(zncorr<0) zncorr=0; |
163 | if(zpcorr<0) zpcorr=0; | |
164 | if(zemcorr<0) zemcorr=0; | |
8309c1ab | 165 | |
166 | // reconstruct the event | |
48642b09 | 167 | printf("\n \t ZDCReco from digits-> Ev.#%d ZN = %.0f, ZP = %.0f, ZEM = %.0f\n",iEvent,zncorr,zpcorr,zemcorr); |
168 | ReconstructEvent(loader, zncorr, zpcorr, zemcorr); | |
8309c1ab | 169 | } |
170 | ||
171 | loader->UnloadDigits(); | |
172 | loader->UnloadRecPoints(); | |
173 | } | |
174 | ||
175 | //_____________________________________________________________________________ | |
176 | void AliZDCReconstructor::Reconstruct(AliRunLoader* runLoader, | |
177 | AliRawReader* rawReader) const | |
178 | { | |
48642b09 | 179 | // *** Local ZDC reconstruction for raw data |
180 | ||
181 | // Calibration data | |
182 | int runNumber = 0; | |
183 | AliZDCCalibData *calibda = GetCalibData(runNumber); | |
184 | ||
185 | Float_t meanPed[47]; | |
186 | for(Int_t jj=0; jj<47; jj++) meanPed[jj] = calibda->GetMeanPed(jj); | |
8309c1ab | 187 | |
188 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
189 | if (!loader) return; | |
190 | loader->LoadRecPoints("recreate"); | |
191 | // Event loop | |
192 | Int_t iEvent = 0; | |
193 | while (rawReader->NextEvent()) { | |
194 | runLoader->GetEvent(iEvent++); | |
195 | ||
196 | // loop over raw data digits | |
48642b09 | 197 | Float_t zncorr=0, zpcorr=0, zemcorr=0; |
8309c1ab | 198 | AliZDCRawStream digit(rawReader); |
199 | while (digit.Next()) { | |
200 | if(digit.IsADCDataWord()){ | |
201 | if(digit.GetADCGain() == 0){ | |
48642b09 | 202 | if(digit.GetSector(0) == 1) zncorr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)]); // pedestals for high gain ZN ADCs; |
203 | else if(digit.GetSector(0) == 2) zpcorr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+10]); // pedestals for high gain ZP ADCs; | |
204 | else if(digit.GetSector(0) == 3) zemcorr += (Float_t) (digit.GetADCValue()-meanPed[digit.GetSector(1)+20]); // pedestals for high gain ZEM ADCs; | |
205 | } | |
8309c1ab | 206 | } |
207 | } | |
48642b09 | 208 | if(zncorr<0) zncorr=0; |
209 | if(zpcorr<0) zpcorr=0; | |
210 | if(zemcorr<0) zemcorr=0; | |
211 | ||
8309c1ab | 212 | // reconstruct the event |
48642b09 | 213 | printf("\n\t ZDCReco from raw-> Ev.#%d ZN = %.0f, ZP = %.0f, ZEM = %.0f\n",iEvent,zncorr,zpcorr,zemcorr); |
214 | ReconstructEvent(loader, zncorr, zpcorr, zemcorr); | |
8309c1ab | 215 | } |
216 | ||
217 | loader->UnloadRecPoints(); | |
218 | } | |
219 | ||
220 | //_____________________________________________________________________________ | |
48642b09 | 221 | void AliZDCReconstructor::ReconstructEvent(AliLoader* loader, Float_t zncorr, |
222 | Float_t zpcorr, Float_t zemcorr) const | |
8309c1ab | 223 | { |
48642b09 | 224 | // ***** Reconstruct one event |
8309c1ab | 225 | |
226 | // --- ADCchannel -> photoelectrons | |
227 | // NB-> PM gain = 10^(5), ADC resolution = 6.4*10^(-7) | |
228 | // Move to V965 (E.S.,15/09/04) NB-> PM gain = 10^(5), ADC resolution = 8*10^(-7) | |
229 | Float_t znphe, zpphe, zemphe, convFactor = 0.08; | |
230 | znphe = zncorr/convFactor; | |
231 | zpphe = zpcorr/convFactor; | |
232 | zemphe = zemcorr/convFactor; | |
48642b09 | 233 | //if AliDebug(1,Form("\n znphe = %f, zpphe = %f, zemphe = %f\n",znphe, zpphe, zemphe); |
8309c1ab | 234 | |
235 | // --- Energy calibration | |
236 | // Conversion factors for hadronic ZDCs goes from phe yield to TRUE | |
237 | // incident energy (conversion from GeV to TeV is included); while for EM | |
238 | // calos conversion is from light yield to detected energy calculated by | |
239 | // GEANT NB -> ZN and ZP conversion factors are constant since incident | |
240 | // spectators have all the same energy, ZEM energy is obtained through a | |
241 | // fit over the whole range of incident particle energies | |
242 | // (obtained with full HIJING simulations) | |
243 | Float_t znenergy, zpenergy, zemenergy, zdcenergy; | |
244 | Float_t znphexTeV=329., zpphexTeV=369.; | |
245 | znenergy = znphe/znphexTeV; | |
246 | zpenergy = zpphe/zpphexTeV; | |
247 | zdcenergy = znenergy+zpenergy; | |
248 | zemenergy = -4.81+0.3238*zemphe; | |
249 | if(zemenergy<0) zemenergy=0; | |
48642b09 | 250 | // if AliDebug(1,Form(" znenergy = %f TeV, zpenergy = %f TeV, zdcenergy = %f GeV, " |
251 | // "\n zemenergy = %f TeV\n", znenergy, zpenergy, | |
252 | // zdcenergy, zemenergy); | |
8309c1ab | 253 | |
48642b09 | 254 | // if(zdcenergy==0) |
255 | // if AliDebug(1,Form("\n\n ### ATTENZIONE!!! -> ev# %d: znenergy = %f TeV, zpenergy = %f TeV, zdcenergy = %f GeV, " | |
256 | // " zemenergy = %f TeV\n\n", fMerger->EvNum(), znenergy, zpenergy, zdcenergy, zemenergy); | |
8309c1ab | 257 | |
258 | // --- Number of incident spectator nucleons | |
259 | Int_t nDetSpecN, nDetSpecP; | |
260 | nDetSpecN = (Int_t) (znenergy/2.760); | |
261 | nDetSpecP = (Int_t) (zpenergy/2.760); | |
99a553ce | 262 | // if AliDebug(1,Form("\n nDetSpecN = %d, nDetSpecP = %d\n",nDetSpecN, nDetSpecP); |
8309c1ab | 263 | |
264 | Int_t nGenSpecN=0, nGenSpecP=0, nGenSpec=0; | |
265 | Double_t impPar=0; | |
266 | // Cut value for Ezem (GeV) | |
8309c1ab | 267 | // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002) |
268 | Float_t eZEMCut = 420.; | |
269 | Float_t deltaEZEMSup = 690.; | |
270 | Float_t deltaEZEMInf = 270.; | |
271 | if(zemenergy > (eZEMCut+deltaEZEMSup)){ | |
272 | nGenSpecN = (Int_t) (fZNCen->Eval(znenergy)); | |
273 | nGenSpecP = (Int_t) (fZPCen->Eval(zpenergy)); | |
274 | nGenSpec = (Int_t) (fZDCCen->Eval(zdcenergy)); | |
275 | impPar = fbCen->Eval(zdcenergy); | |
8309c1ab | 276 | } |
277 | else if(zemenergy < (eZEMCut-deltaEZEMInf)){ | |
278 | nGenSpecN = (Int_t) (fZNPer->Eval(znenergy)); | |
279 | nGenSpecP = (Int_t) (fZPPer->Eval(zpenergy)); | |
280 | nGenSpec = (Int_t) (fZDCPer->Eval(zdcenergy)); | |
281 | impPar = fbPer->Eval(zdcenergy); | |
8309c1ab | 282 | } |
283 | else if(zemenergy >= (eZEMCut-deltaEZEMInf) && zemenergy <= (eZEMCut+deltaEZEMSup)){ | |
284 | nGenSpecN = (Int_t) (fZEMn->Eval(zemenergy)); | |
285 | nGenSpecP = (Int_t) (fZEMp->Eval(zemenergy)); | |
286 | nGenSpec = (Int_t)(fZEMsp->Eval(zemenergy)); | |
287 | impPar = fZEMb->Eval(zemenergy); | |
8309c1ab | 288 | } |
8309c1ab | 289 | // [2] ### Results from a new production -> 0<b<18 fm (Apr 2002) |
290 | if(znenergy>162.) nGenSpecN = (Int_t) (fZEMn->Eval(zemenergy)); | |
291 | if(zpenergy>59.75) nGenSpecP = (Int_t) (fZEMp->Eval(zemenergy)); | |
292 | if(zdcenergy>221.5) nGenSpec = (Int_t)(fZEMsp->Eval(zemenergy)); | |
293 | if(zdcenergy>220.) impPar = fZEMb->Eval(zemenergy); | |
294 | ||
295 | if(nGenSpecN>125) nGenSpecN=125; | |
296 | else if(nGenSpecN<0) nGenSpecN=0; | |
297 | if(nGenSpecP>82) nGenSpecP=82; | |
298 | else if(nGenSpecP<0) nGenSpecP=0; | |
299 | if(nGenSpec>207) nGenSpec=207; | |
300 | else if(nGenSpec<0) nGenSpec=0; | |
8309c1ab | 301 | |
302 | // --- Number of participants | |
303 | Int_t nPart, nPartTot; | |
304 | nPart = 207-nGenSpecN-nGenSpecP; | |
305 | nPartTot = 207-nGenSpec; | |
48642b09 | 306 | printf("\t ZDCeventReco-> ZNEn = %.0f GeV, ZPEn = %.0f GeV, ZEMEn = %.0f GeV\n", |
307 | znenergy, zpenergy, zemenergy); | |
8309c1ab | 308 | |
309 | // create the output tree | |
310 | loader->MakeTree("R"); | |
311 | TTree* treeR = loader->TreeR(); | |
312 | AliZDCReco reco(znenergy, zpenergy, zdcenergy, zemenergy, | |
313 | nDetSpecN, nDetSpecP, nGenSpecN, nGenSpecP, nGenSpec, | |
314 | nPartTot, impPar); | |
315 | AliZDCReco* preco = &reco; | |
316 | const Int_t kBufferSize = 4000; | |
317 | treeR->Branch("ZDC", "AliZDCReco", &preco, kBufferSize); | |
318 | ||
319 | // write the output tree | |
320 | treeR->Fill(); | |
321 | loader->WriteRecPoints("OVERWRITE"); | |
322 | } | |
323 | ||
324 | //_____________________________________________________________________________ | |
325 | void AliZDCReconstructor::FillESD(AliRunLoader* runLoader, | |
326 | AliESD* esd) const | |
327 | { | |
328 | // fill energies and number of participants to the ESD | |
329 | ||
330 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
331 | if (!loader) return; | |
332 | loader->LoadRecPoints(); | |
333 | ||
334 | TTree* treeR = loader->TreeR(); | |
335 | if (!treeR) return; | |
336 | AliZDCReco reco; | |
337 | AliZDCReco* preco = &reco; | |
338 | treeR->SetBranchAddress("ZDC", &preco); | |
339 | ||
340 | treeR->GetEntry(0); | |
341 | esd->SetZDC(reco.GetZNenergy(), reco.GetZPenergy(), reco.GetZEMenergy(), | |
342 | reco.GetNPart()); | |
343 | ||
344 | loader->UnloadRecPoints(); | |
345 | } | |
48642b09 | 346 | |
347 | //_____________________________________________________________________________ | |
348 | AliZDCCalibData* AliZDCReconstructor::GetCalibData(int runNumber) const | |
349 | { | |
350 | ||
351 | //printf("\n\t AliZDCReconstructor::GetCalibData \n"); | |
352 | //fStorage->PrintSelectionList(); | |
353 | //AliCDBEntry *entry = fStorage->Get("DBlocal/ZDC/Calib/Data",runNumber); | |
354 | ||
355 | ||
659f5878 | 356 | AliCDBStorage *fStorage = AliCDBManager::Instance()->GetStorage("local://$ALICE_ROOT"); |
357 | AliCDBEntry *entry = fStorage->Get("ZDC/Calib/Data",0); | |
48642b09 | 358 | |
359 | AliZDCCalibData *calibda = (AliZDCCalibData*) entry->GetObject(); | |
360 | ||
659f5878 | 361 | //AliCDBManager::Instance()->Destroy(); |
48642b09 | 362 | |
363 | return calibda; | |
364 | ||
365 | } |