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37c55dc0 | 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 | // This is a TTask that constructs ReconstParticles (reconstructed particles) | |
18 | // out of Digits | |
19 | // | |
20 | //-- Authors: Evgeny Karpechev(INR) and Alla Maevsksia | |
21 | ////////////////////////////////////////////////////////////////////////////// | |
22 | ||
dc8af42e | 23 | // --- ROOT system --- |
24 | #include "TTask.h" | |
25 | #include "TTree.h" | |
26 | #include "TSystem.h" | |
27 | #include "TFile.h" | |
37c55dc0 | 28 | #include "TROOT.h" |
29 | #include "TFolder.h" | |
46501dfb | 30 | #include "TH2F.h" |
37c55dc0 | 31 | |
dc8af42e | 32 | // --- Standard library --- |
37c55dc0 | 33 | #include <stdlib.h> |
88cb7938 | 34 | #include <Riostream.h> |
dc8af42e | 35 | |
36 | // --- AliRoot header files --- | |
37 | ||
88cb7938 | 38 | #include "AliRunLoader.h" |
39 | #include "AliLoader.h" | |
40 | ||
dc8af42e | 41 | #include "AliFMDdigit.h" |
1a42d4f2 | 42 | #include "AliFMDhit.h" |
dc8af42e | 43 | #include "AliFMDReconstParticles.h" |
44 | #include "AliFMD.h" | |
45 | #include "AliFMDv1.h" | |
46 | #include "AliFMDReconstruction.h" | |
47 | #include "AliRun.h" | |
88cb7938 | 48 | #include "AliConfig.h" |
1a42d4f2 | 49 | #include "AliHeader.h" |
50 | #include "AliGenEventHeader.h" | |
88cb7938 | 51 | |
dc8af42e | 52 | ClassImp(AliFMDReconstruction) |
53 | ||
54 | ||
55 | //____________________________________________________________________________ | |
56 | ||
57 | AliFMDReconstruction::AliFMDReconstruction():TTask("AliFMDReconstruction","") | |
58 | { | |
59 | fNevents = 0 ; // Number of events to rreconnstraction, 0 means all events in current file | |
88cb7938 | 60 | fRunLoader = 0x0; |
61 | ||
dc8af42e | 62 | } |
63 | //____________________________________________________________________________ | |
64 | ||
88cb7938 | 65 | AliFMDReconstruction::AliFMDReconstruction(AliRunLoader* rl):TTask("AliFMDReconstruction","") |
dc8af42e | 66 | { |
88cb7938 | 67 | |
68 | if (rl == 0x0) | |
69 | { | |
70 | Fatal("AliFMDReconstruction","Argument AliRunLoader* is null!"); | |
71 | return; | |
72 | } | |
73 | ||
dc8af42e | 74 | fNevents = 0 ; // Number of events to rreconnstraction, 0 means all events in current file |
88cb7938 | 75 | |
76 | fRunLoader = rl; | |
3d44ce66 | 77 | AliLoader* plFMD = fRunLoader->GetLoader("FMDLoader"); |
78 | if (plFMD == 0x0) | |
88cb7938 | 79 | { |
80 | Fatal("AliFMDReconstruction","Can not find FMD (loader) in specified event"); | |
81 | return;//never reached | |
82 | } | |
dc8af42e | 83 | //add Task to //root/Tasks folder |
3d44ce66 | 84 | // gime->PostReconstructioner(this); |
dc8af42e | 85 | } |
86 | ||
87 | //____________________________________________________________________________ | |
88 | ||
89 | AliFMDReconstruction::~AliFMDReconstruction() | |
90 | { | |
3d44ce66 | 91 | AliLoader* plFMD = fRunLoader->GetLoader("FMDLoader"); |
92 | plFMD->CleanReconstructioner(); | |
dc8af42e | 93 | } |
88cb7938 | 94 | |
95 | //____________________________________________________________________________ | |
dc8af42e | 96 | |
46501dfb | 97 | void AliFMDReconstruction::Exec() |
dc8af42e | 98 | { |
88cb7938 | 99 | //Collects all digits in the same active volume into number of particles |
a39f3926 | 100 | /* |
88cb7938 | 101 | Reconstruct number of particles |
a39f3926 | 102 | in given group of pads for given FMDvolume |
103 | determine by numberOfVolume , | |
104 | numberOfMinSector,numberOfMaxSector, | |
105 | numberOfMinRing, numberOgMaxRing | |
106 | Reconstruction method choose dependence on number of empty pads | |
107 | */ | |
108 | ||
109 | ||
3d44ce66 | 110 | #ifdef DEBUG |
111 | Info("Exec ","Start"); | |
112 | #endif | |
113 | ||
a39f3926 | 114 | Int_t const knumVolumes=5; |
46501dfb | 115 | Int_t padADC; |
1a42d4f2 | 116 | Float_t eta, etain,etaout,rad,theta; |
cb1df35e | 117 | Int_t ivol, iSector, iRing; |
1a42d4f2 | 118 | Float_t rin[5]={4.2,15.4,4.2,15.4,4.2}; |
119 | Float_t rout[5]={17.4,28.4,17.4,28.4,17.4}; | |
2ad713c4 | 120 | Float_t z[5]={-62.8, -75.2, 83.4, 75.2, 340.}; |
46501dfb | 121 | Int_t numberOfRings[5]={512,256,512,256,512}; |
a39f3926 | 122 | Int_t numberOfSectors[5]= {20,40,20,40,20}; |
123 | Int_t numberOfEtaIntervals[5]; | |
cb1df35e | 124 | // number of ring for boundary 0.1 eta |
cb1df35e | 125 | |
88cb7938 | 126 | |
127 | if (fRunLoader == 0x0) | |
128 | { | |
129 | Error("Exec","Run Loader loader is NULL - Session not opened"); | |
130 | return; | |
131 | } | |
3d44ce66 | 132 | |
133 | AliLoader* plFMD = fRunLoader->GetLoader("FMDLoader"); | |
134 | if (plFMD == 0x0) | |
88cb7938 | 135 | { |
136 | Fatal("AliFMDReconstruction","Can not find FMD (loader) in specified event"); | |
137 | return;//never reached | |
138 | } | |
139 | ||
f540341d | 140 | if (!fRunLoader->GetAliRun()) fRunLoader->LoadgAlice(); |
141 | if (!fRunLoader->TreeE()) fRunLoader->LoadHeader(); | |
3d44ce66 | 142 | |
46501dfb | 143 | TDirectory* cwd = gDirectory; |
144 | gDirectory = 0x0; | |
3d44ce66 | 145 | Text_t buf1[20]; |
46501dfb | 146 | TH2F* hTotal[10]; |
147 | for (Int_t j=1; j<=5; j++){ | |
148 | sprintf(buf1,"hTotal%d",j); | |
149 | ||
150 | hTotal[j] = new TH2F(buf1," Number of primary particles ", | |
151 | numberOfSectors[j-1],1,numberOfSectors[j-1], | |
152 | numberOfRings[j-1],1,numberOfRings[j-1]); | |
153 | } | |
154 | gDirectory = cwd; | |
155 | ||
3d44ce66 | 156 | Int_t retval=0; |
7fe81cad | 157 | if(fNevents == 0) fNevents=Int_t (fRunLoader->TreeE()->GetEntries()); |
3d44ce66 | 158 | #ifdef DEBUG |
46501dfb | 159 | cout<<" fNevents "<<fNevents<<endl; |
3d44ce66 | 160 | #endif |
46501dfb | 161 | for(Int_t ievent=0;ievent<fNevents;ievent++) |
dc8af42e | 162 | { |
3d44ce66 | 163 | #ifdef DEBUG |
164 | cout<<" *** event "<<ievent<<endl; | |
165 | #endif | |
88cb7938 | 166 | fRunLoader->GetEvent(ievent) ; |
3d44ce66 | 167 | //event z-vertex for correction eta-rad dependence |
168 | AliHeader *header = fRunLoader->GetHeader(); | |
169 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
170 | TArrayF *o = new TArrayF(3); | |
171 | genHeader->PrimaryVertex(*o); | |
172 | Float_t zVertex=o->At(2); | |
88cb7938 | 173 | |
3d44ce66 | 174 | for (Int_t i=0; i<5; i++) |
46501dfb | 175 | hTotal[i+1]->Reset(); |
176 | ||
3d44ce66 | 177 | retval = plFMD->LoadDigits("READ"); |
46501dfb | 178 | if (retval) |
179 | { | |
180 | Error("Exec","Error occured while loading digits. Exiting."); | |
181 | return; | |
182 | } | |
183 | ||
3d44ce66 | 184 | AliFMD * fFMD = (AliFMD *)gAlice->GetDetector("FMD"); |
46501dfb | 185 | TClonesArray *fReconParticles=fFMD->ReconParticles(); |
186 | TClonesArray *fDigits=fFMD->Digits(); | |
1a42d4f2 | 187 | |
3d44ce66 | 188 | TTree* treeD = plFMD->TreeD(); |
46501dfb | 189 | if (treeD == 0x0) |
190 | { | |
191 | Error("Exec","Can not get Tree with Digits. Nothing to reconstruct - Exiting"); | |
192 | return; | |
193 | } | |
194 | ||
195 | TBranch *brDigits=0; | |
196 | ||
197 | brDigits=treeD->GetBranch("FMD"); | |
3d44ce66 | 198 | |
46501dfb | 199 | if (brDigits) { |
200 | brDigits->SetAddress(&fDigits); | |
46501dfb | 201 | }else{ |
202 | cerr<<"EXEC Branch FMD digits not found"<<endl; | |
203 | return; | |
204 | } | |
205 | ||
3d44ce66 | 206 | if(plFMD->TreeR()==0) plFMD->MakeTree("R"); |
88cb7938 | 207 | |
dc8af42e | 208 | //Make branches |
a39f3926 | 209 | fFMD->MakeBranch("R"); |
1a42d4f2 | 210 | |
37c55dc0 | 211 | |
46501dfb | 212 | Int_t zeroADC=6; |
3d44ce66 | 213 | // read Digits |
1a42d4f2 | 214 | AliFMDdigit *fmdDigit; |
a39f3926 | 215 | if (fFMD) |
dc8af42e | 216 | { |
3d44ce66 | 217 | plFMD->TreeD()->GetEvent(0); |
46501dfb | 218 | |
219 | Int_t nDigits=fDigits->GetEntries(); | |
46501dfb | 220 | Int_t recParticles[6]; |
221 | Int_t nRecPart=0 ; | |
3d44ce66 | 222 | Int_t zeroPads=0; |
223 | Int_t numberOfPads=0; | |
224 | Int_t pedestal; | |
225 | Float_t channelWidth=(22400*50)/1024; | |
226 | for (Int_t digit=0;digit<nDigits;digit++) | |
227 | { | |
228 | fmdDigit=(AliFMDdigit*)fDigits->UncheckedAt(digit); | |
229 | ivol=fmdDigit->Volume(); | |
230 | iSector=fmdDigit->NumberOfSector(); | |
231 | iRing=fmdDigit->NumberOfRing(); | |
232 | pedestal=Int_t(gRandom->Gaus(500,250)); | |
233 | padADC= fmdDigit->ADCsignal() | |
234 | -Int_t(Float_t(pedestal)/channelWidth); | |
235 | if (padADC<0) padADC=0; | |
46501dfb | 236 | hTotal[ivol]->Fill(iSector,iRing,padADC); |
3d44ce66 | 237 | } //digit loop |
238 | ||
239 | //reconstruct multiplicity in 0.1 eta according Poisson distribution | |
46501dfb | 240 | |
3d44ce66 | 241 | Int_t rmin=0; Int_t rmax=0; |
242 | Int_t smin=0; Int_t smax=0; | |
243 | for (ivol=0; ivol<knumVolumes; ivol++) | |
244 | { | |
245 | Float_t ring2number=Float_t (numberOfRings[ivol])/ | |
246 | (rout[ivol]-rin[ivol]); | |
247 | Float_t realZ=zVertex+z[ivol]; | |
248 | theta=TMath::ATan(rout[ivol]/TMath::Abs(realZ)); | |
249 | etain = - TMath::Log( TMath::Tan(theta/2.)); | |
250 | theta=TMath::ATan(rin[ivol]/TMath::Abs(realZ)); | |
251 | etaout=- TMath::Log( TMath::Tan(theta/2.)); | |
252 | numberOfEtaIntervals[ivol]=Int_t((etaout-etain)*10)-1; | |
253 | eta=etain; | |
254 | for (Int_t e1=0;e1<=numberOfEtaIntervals[ivol];e1++) | |
255 | { | |
256 | theta = 2.*TMath::ATan (TMath::Exp (-eta)); | |
257 | Float_t radmin = TMath::Abs(realZ) * (TMath::Tan (theta)); | |
258 | rmax= Int_t ( (radmin-rin[ivol])*ring2number+0.5); | |
259 | eta=eta+0.1; | |
260 | theta = 2.*TMath::ATan (TMath::Exp (-eta)); | |
261 | rad = TMath::Abs(realZ) * (TMath::Tan (theta)); | |
262 | rmin=Int_t( (rad-rin[ivol])*ring2number+0.5); | |
263 | ||
264 | zeroPads=0; | |
265 | smin=0; | |
266 | smax=numberOfSectors[ivol]; | |
267 | numberOfPads=(rmax-rmin)*(smax-smin); | |
268 | for (Int_t iring=rmin; iring<rmax; iring++) | |
269 | { | |
270 | for | |
271 | (Int_t isector=0; | |
272 | isector<numberOfSectors[ivol]; | |
273 | isector++) | |
274 | { | |
275 | if(hTotal[ivol+1]->GetBinContent(isector+1,iring+1) | |
276 | <zeroADC) zeroPads++;} | |
277 | ||
278 | } //ring | |
279 | Float_t numberOfPads=Float_t(smax-smin)*Float_t(rmax-rmin); | |
280 | ||
281 | Double_t lambda=-TMath::Log(Double_t(zeroPads)/numberOfPads); | |
282 | Int_t fRecon=Int_t (lambda*numberOfPads+0.5); | |
283 | recParticles[0]=ivol+1; | |
284 | recParticles[1]=smin; | |
285 | recParticles[2]=smax; | |
286 | recParticles[3]=rmin; | |
287 | recParticles[4]=rmax; | |
288 | recParticles[5]= fRecon; | |
289 | new((*fReconParticles)[nRecPart++]) AliFMDReconstParticles(recParticles); | |
290 | ||
46501dfb | 291 | |
1a42d4f2 | 292 | } // eta |
293 | } // volume | |
cb1df35e | 294 | |
cb1df35e | 295 | }//if FMD |
3d44ce66 | 296 | plFMD->TreeR()->Reset(); |
297 | plFMD->TreeR()->Fill(); | |
298 | plFMD->WriteRecPoints("OVERWRITE"); | |
299 | plFMD->UnloadDigits(); | |
dc8af42e | 300 | } //event loop |
3d44ce66 | 301 | #ifdef DEBUG |
302 | Info(" Exec"," finished"); | |
303 | #endif | |
304 | // delete hTotal[10]; | |
305 | ||
88cb7938 | 306 | } |
dc8af42e | 307 |