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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" | |
30 | ||
dc8af42e | 31 | // --- Standard library --- |
37c55dc0 | 32 | #include <stdlib.h> |
88cb7938 | 33 | #include <Riostream.h> |
dc8af42e | 34 | |
35 | // --- AliRoot header files --- | |
36 | ||
88cb7938 | 37 | #include "AliRunLoader.h" |
38 | #include "AliLoader.h" | |
39 | ||
dc8af42e | 40 | #include "AliFMDdigit.h" |
1a42d4f2 | 41 | #include "AliFMDhit.h" |
dc8af42e | 42 | #include "AliFMDReconstParticles.h" |
43 | #include "AliFMD.h" | |
44 | #include "AliFMDv1.h" | |
45 | #include "AliFMDReconstruction.h" | |
46 | #include "AliRun.h" | |
88cb7938 | 47 | #include "AliConfig.h" |
1a42d4f2 | 48 | #include "AliHeader.h" |
49 | #include "AliGenEventHeader.h" | |
88cb7938 | 50 | |
dc8af42e | 51 | ClassImp(AliFMDReconstruction) |
52 | ||
53 | ||
54 | //____________________________________________________________________________ | |
55 | ||
56 | AliFMDReconstruction::AliFMDReconstruction():TTask("AliFMDReconstruction","") | |
57 | { | |
58 | fNevents = 0 ; // Number of events to rreconnstraction, 0 means all events in current file | |
88cb7938 | 59 | fRunLoader = 0x0; |
60 | ||
dc8af42e | 61 | } |
62 | //____________________________________________________________________________ | |
63 | ||
88cb7938 | 64 | AliFMDReconstruction::AliFMDReconstruction(AliRunLoader* rl):TTask("AliFMDReconstruction","") |
dc8af42e | 65 | { |
88cb7938 | 66 | |
67 | if (rl == 0x0) | |
68 | { | |
69 | Fatal("AliFMDReconstruction","Argument AliRunLoader* is null!"); | |
70 | return; | |
71 | } | |
72 | ||
dc8af42e | 73 | fNevents = 0 ; // Number of events to rreconnstraction, 0 means all events in current file |
88cb7938 | 74 | |
75 | fRunLoader = rl; | |
76 | AliLoader* gime = fRunLoader->GetLoader("FMDLoader"); | |
77 | if (gime == 0x0) | |
78 | { | |
79 | Fatal("AliFMDReconstruction","Can not find FMD (loader) in specified event"); | |
80 | return;//never reached | |
81 | } | |
dc8af42e | 82 | //add Task to //root/Tasks folder |
88cb7938 | 83 | gime->PostReconstructioner(this); |
dc8af42e | 84 | } |
85 | ||
86 | //____________________________________________________________________________ | |
87 | ||
88 | AliFMDReconstruction::~AliFMDReconstruction() | |
89 | { | |
dc8af42e | 90 | } |
88cb7938 | 91 | |
92 | //____________________________________________________________________________ | |
dc8af42e | 93 | |
37c55dc0 | 94 | void AliFMDReconstruction::Exec(Option_t *option) |
dc8af42e | 95 | { |
88cb7938 | 96 | //Collects all digits in the same active volume into number of particles |
a39f3926 | 97 | /* |
88cb7938 | 98 | Reconstruct number of particles |
a39f3926 | 99 | in given group of pads for given FMDvolume |
100 | determine by numberOfVolume , | |
101 | numberOfMinSector,numberOfMaxSector, | |
102 | numberOfMinRing, numberOgMaxRing | |
103 | Reconstruction method choose dependence on number of empty pads | |
104 | */ | |
105 | ||
106 | ||
1a42d4f2 | 107 | cout<<"\nStart AliFMDReconstruction::Exec(...)"<<endl; |
a39f3926 | 108 | Int_t const knumVolumes=5; |
109 | Int_t const knumSectors=40; | |
110 | Int_t const knumRings=768; | |
111 | Int_t padADC[10][50][800]; | |
1a42d4f2 | 112 | Float_t eta, etain,etaout,rad,theta; |
cb1df35e | 113 | Int_t ivol, iSector, iRing; |
1a42d4f2 | 114 | Float_t rin[5]={4.2,15.4,4.2,15.4,4.2}; |
115 | Float_t rout[5]={17.4,28.4,17.4,28.4,17.4}; | |
116 | Float_t z[5]={62.8, 75.2, -83.4, -75.2, -340.}; | |
a39f3926 | 117 | Int_t numberOfRings[5]={768,384,768,384,768}; |
118 | Int_t numberOfSectors[5]= {20,40,20,40,20}; | |
119 | Int_t numberOfEtaIntervals[5]; | |
cb1df35e | 120 | // number of ring for boundary 0.1 eta |
cb1df35e | 121 | |
88cb7938 | 122 | |
123 | if (fRunLoader == 0x0) | |
124 | { | |
125 | Error("Exec","Run Loader loader is NULL - Session not opened"); | |
126 | return; | |
127 | } | |
128 | AliLoader* gime = fRunLoader->GetLoader("FMDLoader"); | |
129 | if (gime == 0x0) | |
130 | { | |
131 | Fatal("AliFMDReconstruction","Can not find FMD (loader) in specified event"); | |
132 | return;//never reached | |
133 | } | |
134 | ||
135 | fRunLoader->LoadgAlice(); | |
136 | Int_t retval; | |
137 | ||
138 | retval = gime->LoadHits("READ"); | |
139 | if (retval) | |
140 | { | |
141 | Error("Exec","Error occured while loading hits. Exiting."); | |
142 | return; | |
143 | } | |
144 | ||
145 | retval = gime->LoadDigits("READ"); | |
146 | if (retval) | |
147 | { | |
148 | Error("Exec","Error occured while loading digits. Exiting."); | |
149 | return; | |
150 | } | |
151 | ||
a39f3926 | 152 | AliFMD * fFMD = (AliFMD *) gAlice->GetDetector("FMD"); |
153 | TClonesArray *fReconParticles=fFMD->ReconParticles(); | |
88cb7938 | 154 | |
155 | TTree* treeD = gime->TreeD(); | |
156 | if (treeD == 0x0) | |
157 | { | |
158 | Error("Exec","Can not get Tree with Digits. Nothing to reconstruct - Exiting"); | |
159 | return; | |
160 | } | |
161 | if(fNevents == 0) fNevents=(Int_t)treeD->GetEntries(); | |
162 | //PH Do we use TreeE (kinematics), or TreeD (digits) toaccess the number | |
163 | //PH of events? | |
164 | //PH if(fNevents == 0) fNevents=(Int_t)gAlice->TreeE()->GetEntries(); | |
165 | //PH cout<<" fNevents "<<fNevents<<endl; | |
166 | ||
167 | TBranch *brDigits=0; | |
168 | ||
dc8af42e | 169 | for(Int_t ievent=0;ievent<fNevents;ievent++) |
170 | { | |
88cb7938 | 171 | fRunLoader->GetEvent(ievent) ; |
172 | ||
173 | TTree* treeH = gime->TreeH(); | |
174 | if (treeH == 0x0) | |
175 | { | |
176 | Error("Exec","Can not get TreeH"); | |
177 | return; | |
178 | } | |
1a42d4f2 | 179 | cout<<" ievent "<<ievent<<endl; |
a39f3926 | 180 | for (Int_t i=0; i<knumVolumes; i++) |
181 | for(Int_t j=0; j<knumSectors; j++) | |
182 | for(Int_t ij=0; ij<knumRings; ij++) | |
183 | padADC[i][j][ij]=0; //zhachem ??? | |
88cb7938 | 184 | |
185 | brDigits=treeD->GetBranch("FMD"); | |
1a42d4f2 | 186 | if (!brDigits){ |
187 | cerr<<"EXEC Branch FMD digits not found"<<endl; | |
188 | return; | |
189 | } | |
190 | ||
88cb7938 | 191 | if(gime->TreeR()==0) gime->MakeTree("R"); |
192 | ||
dc8af42e | 193 | //Make branches |
a39f3926 | 194 | fFMD->MakeBranch("R"); |
1a42d4f2 | 195 | |
37c55dc0 | 196 | |
cb1df35e | 197 | Int_t zeroADC=1; |
1a42d4f2 | 198 | |
199 | AliFMDdigit *fmdDigit; | |
a39f3926 | 200 | if (fFMD) |
dc8af42e | 201 | { |
88cb7938 | 202 | gime->TreeD()->GetEvent(0); |
a39f3926 | 203 | TClonesArray *fFMDdigits=fFMD->Digits(); |
204 | Int_t nDigits=fFMDdigits->GetEntries(); | |
1a42d4f2 | 205 | cout<<" nDigits "<<nDigits<<endl; |
a39f3926 | 206 | Int_t recParticles[6]; |
dc8af42e | 207 | Int_t nRecPart=0 ; |
a39f3926 | 208 | Int_t zeroPads=0; |
209 | Int_t numberOfPads=0; //To avoid warning | |
cb1df35e | 210 | Int_t pedestal; |
211 | Float_t channelWidth=(22400*50)/1024; | |
dc8af42e | 212 | for (Int_t digit=0;digit<nDigits;digit++) |
213 | { | |
a39f3926 | 214 | fmdDigit=(AliFMDdigit*)fFMDdigits->UncheckedAt(digit); |
cb1df35e | 215 | ivol=fmdDigit->Volume(); |
216 | iSector=fmdDigit->NumberOfSector(); | |
217 | iRing=fmdDigit->NumberOfRing(); | |
218 | pedestal=Int_t(gRandom->Gaus(500,250)); | |
a39f3926 | 219 | padADC[ivol-1][iSector-1][iRing-1]= |
cb1df35e | 220 | fmdDigit->ADCsignal() |
221 | -Int_t(Float_t(pedestal)/channelWidth); | |
a39f3926 | 222 | if (padADC[ivol-1][iSector-1][iRing-1]<0) |
223 | padADC[ivol-1][iSector-1][iRing-1]=0; | |
dc8af42e | 224 | } //digit loop |
a39f3926 | 225 | Int_t rmin=0; Int_t rmax=0; //To avoid warning |
226 | Int_t smin=0; Int_t smax=0; //To avoid warning | |
88cb7938 | 227 | AliHeader *header = fRunLoader->GetHeader(); |
1a42d4f2 | 228 | AliGenEventHeader* genHeader = header->GenEventHeader(); |
229 | TArrayF *o = new TArrayF(3); | |
230 | genHeader->PrimaryVertex(*o); | |
231 | Float_t zVertex=o->At(2); | |
a39f3926 | 232 | for (ivol=0; ivol<knumVolumes; ivol++) |
cb1df35e | 233 | { |
1a42d4f2 | 234 | Float_t realZ=zVertex+z[ivol]; |
235 | theta=TMath::ATan(rin[ivol]/TMath::Abs(realZ)); | |
236 | etain = - TMath::Log( TMath::Tan(theta/2.)); | |
237 | theta=TMath::ATan(rout[ivol]/TMath::Abs(realZ)); | |
238 | etaout=- TMath::Log( TMath::Tan(theta/2.)); | |
a39f3926 | 239 | numberOfEtaIntervals[ivol]=Int_t ((etain-etaout)*10); |
1a42d4f2 | 240 | eta=etain; |
a39f3926 | 241 | for (Int_t e1=0;e1<=numberOfEtaIntervals[ivol];e1++) |
cb1df35e | 242 | { |
1a42d4f2 | 243 | theta = 2.*TMath::ATan (TMath::Exp (-eta)); |
244 | Float_t radmin = TMath::Abs(realZ) * (TMath::Tan (theta)); | |
a39f3926 | 245 | rmin= Int_t ( (radmin-rin[ivol])*numberOfRings[ivol]/(rout[ivol]-rin[ivol])); |
1a42d4f2 | 246 | eta=eta-0.1; |
247 | theta = 2.*TMath::ATan (TMath::Exp (-eta)); | |
248 | rad = TMath::Abs(realZ) * (TMath::Tan (theta)); | |
a39f3926 | 249 | rmax=Int_t( (rad-rin[ivol])*numberOfRings[ivol]/(rout[ivol]-rin[ivol])); |
250 | zeroPads=0; | |
251 | smin=0; | |
252 | smax=numberOfSectors[ivol]; | |
253 | for (Int_t iring=rmin; iring<rmax; iring++) | |
cb1df35e | 254 | { |
a39f3926 | 255 | numberOfPads=(rmax-rmin)*(smax-smin); |
cb1df35e | 256 | for |
257 | (Int_t isector=1; | |
a39f3926 | 258 | isector<=numberOfSectors[ivol]; |
cb1df35e | 259 | isector++) |
a39f3926 | 260 | if(padADC[ivol][isector-1][iring-1]<zeroADC) |
261 | zeroPads++; | |
cb1df35e | 262 | } //ring |
cb1df35e | 263 | Float_t zerosRatio= |
a39f3926 | 264 | (Float_t)zeroPads/(Float_t)numberOfPads; |
265 | recParticles[0]=ivol; | |
266 | recParticles[1]=smin; | |
267 | recParticles[2]=smax; | |
268 | recParticles[3]=rmin; | |
269 | recParticles[4]=rmax; | |
270 | if (zerosRatio>0.1 ) | |
271 | recParticles[5]= | |
272 | DeterminationByPoisson | |
273 | (padADC,ivol+1,rmin,rmax,smin,smax); | |
cb1df35e | 274 | else |
a39f3926 | 275 | recParticles[5]= |
276 | DeterminationByThresholds | |
277 | (padADC,ivol+1,rmin,rmax,smin,smax); | |
cb1df35e | 278 | new((*fReconParticles)[nRecPart++]) |
a39f3926 | 279 | AliFMDReconstParticles(recParticles); |
1a42d4f2 | 280 | } // eta |
281 | } // volume | |
cb1df35e | 282 | |
cb1df35e | 283 | }//if FMD |
88cb7938 | 284 | gime->TreeR()->Reset(); |
285 | gime->TreeR()->Fill(); | |
286 | gime->WriteRecPoints("OVERWRITE"); | |
dc8af42e | 287 | } //event loop |
1a42d4f2 | 288 | cout<<"\nAliFMDReconstruction::Exec finished"<<endl; |
88cb7938 | 289 | } |
dc8af42e | 290 | |
cb1df35e | 291 | //------------------------------------------------------------ |
a39f3926 | 292 | Int_t AliFMDReconstruction::DeterminationByThresholds |
293 | (Int_t padAdc[][50][800],Int_t volume, Int_t rmin, Int_t rmax, | |
294 | Int_t smin, Int_t smax) | |
dc8af42e | 295 | { |
a39f3926 | 296 | /* |
297 | reconstruct number of particles by | |
298 | energy deposited threshold method | |
299 | Using if number of empty pads less then 10% | |
300 | ||
301 | */ | |
1a42d4f2 | 302 | cout<<"\nStart threshold method\n"; |
cb1df35e | 303 | |
304 | Int_t thresholdInner[30]={ | |
305 | 0, 14, 28, 42, 57, | |
306 | 72, 89, 104, 124, 129, | |
307 | 164, 174, 179, 208, 228, | |
308 | 248, 268, 317, 337, 357, | |
309 | 392, 407, 416, 426, 436, | |
310 | 461, 468, 493, 506, 515}; | |
311 | ||
312 | Int_t thresholdOuter[30]={0, 18, 48, 77, 105, | |
313 | 132, 165, 198, 231, | |
314 | 264, 286, 308, 334, | |
315 | 352, 374, 418, 440, | |
316 | 462, 484, 506, 528, | |
317 | 550, 572, 594, 616}; | |
318 | Int_t threshold[30]; | |
319 | for (Int_t it=0; it<30; it++) { | |
320 | if(volume==1||volume==3||volume==5) threshold[it]=thresholdInner[it]; | |
321 | if(volume==2||volume==4) threshold[it]=thresholdOuter[it]; | |
322 | } | |
a39f3926 | 323 | Int_t thresholdArraySize = 30; |
324 | Int_t numPart=0; | |
cb1df35e | 325 | //Inner Si |
a39f3926 | 326 | for (Int_t iring=rmin; iring<rmax; iring++) |
cb1df35e | 327 | { |
a39f3926 | 328 | for (Int_t isector=smin; isector<smax; isector++) |
cb1df35e | 329 | { |
a39f3926 | 330 | for (int i=0;i<thresholdArraySize-1;i++) |
cb1df35e | 331 | { |
a39f3926 | 332 | if(padAdc[volume-1][isector][iring]>threshold[i] |
333 | &&padAdc[volume-1][isector][iring]<=threshold[i+1]) | |
cb1df35e | 334 | { |
a39f3926 | 335 | numPart+=i; |
cb1df35e | 336 | break; |
337 | }; // if in threshol interval | |
338 | }; //threshold_array_size | |
339 | }; //iring | |
340 | }; //sector | |
1a42d4f2 | 341 | cout<<"\nEnd threshol method"<<endl; |
a39f3926 | 342 | return numPart; |
dc8af42e | 343 | } |
cb1df35e | 344 | |
88cb7938 | 345 | //__________________________________________________________________ |
cb1df35e | 346 | |
a39f3926 | 347 | Int_t AliFMDReconstruction::DeterminationByPoisson |
348 | (Int_t padAdc[][50][800], | |
349 | Int_t vol, Int_t rmin, Int_t rmax, | |
350 | Int_t secmin, Int_t secmax) | |
dc8af42e | 351 | { |
a39f3926 | 352 | /* |
353 | reconstruct number of particles by Poisson statistic method | |
354 | according number of empty pad in chosen group of pads | |
355 | using if number of empty pads more then 10% | |
356 | ||
357 | */ | |
358 | ||
1a42d4f2 | 359 | // cout<<"\nStart Poisson method"; |
a39f3926 | 360 | Int_t thresholdADC=1; |
cb1df35e | 361 | Int_t zeropads=0; |
362 | for (Int_t i=rmin;i<rmax;i++) | |
363 | { | |
364 | for (Int_t j=secmin;j<secmax;j++) | |
365 | { | |
a39f3926 | 366 | if (padAdc[vol-1][j][i]<thresholdADC) zeropads++; |
cb1df35e | 367 | }; |
368 | }; | |
369 | Float_t lambda=-TMath::Log(Float_t(zeropads)/ | |
370 | ( Float_t(secmax-secmin)* | |
371 | Float_t(rmax-rmin))); //+1 zdes' ne nado | |
a39f3926 | 372 | Int_t fRecon=(Int_t)(lambda*(secmax-secmin)*(rmax-rmin)); //+1 zdes' ne nado |
cb1df35e | 373 | // cout<<"\nEnd Poisson method"<<endl; |
a39f3926 | 374 | return fRecon; |
88cb7938 | 375 | } |
dc8af42e | 376 | |
377 |