]>
Commit | Line | Data |
---|---|---|
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 | //_________________________________________________________________________ | |
121a60bd | 17 | // This is a class that constructs ReconstParticles (reconstructed particles) |
37c55dc0 | 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" |
44cc5e44 | 31 | #include "TRandom.h" |
37c55dc0 | 32 | |
dc8af42e | 33 | // --- Standard library --- |
37c55dc0 | 34 | #include <stdlib.h> |
88cb7938 | 35 | #include <Riostream.h> |
dc8af42e | 36 | |
37 | // --- AliRoot header files --- | |
38 | ||
88cb7938 | 39 | #include "AliRunLoader.h" |
40 | #include "AliLoader.h" | |
41 | ||
dc8af42e | 42 | #include "AliFMDdigit.h" |
43 | #include "AliFMDReconstParticles.h" | |
121a60bd | 44 | #include "AliFMDReconstructor.h" |
dc8af42e | 45 | #include "AliRun.h" |
88cb7938 | 46 | #include "AliConfig.h" |
1a42d4f2 | 47 | #include "AliHeader.h" |
48 | #include "AliGenEventHeader.h" | |
88cb7938 | 49 | |
121a60bd | 50 | ClassImp(AliFMDReconstructor) |
dc8af42e | 51 | |
52 | ||
88cb7938 | 53 | //____________________________________________________________________________ |
dc8af42e | 54 | |
121a60bd | 55 | void AliFMDReconstructor::Reconstruct(AliRunLoader* runLoader) const |
dc8af42e | 56 | { |
88cb7938 | 57 | //Collects all digits in the same active volume into number of particles |
a39f3926 | 58 | /* |
88cb7938 | 59 | Reconstruct number of particles |
a39f3926 | 60 | in given group of pads for given FMDvolume |
61 | determine by numberOfVolume , | |
62 | numberOfMinSector,numberOfMaxSector, | |
63 | numberOfMinRing, numberOgMaxRing | |
121a60bd | 64 | Reconstructor method choose dependence on number of empty pads |
a39f3926 | 65 | */ |
66 | ||
67 | ||
3d44ce66 | 68 | #ifdef DEBUG |
69 | Info("Exec ","Start"); | |
70 | #endif | |
71 | ||
a39f3926 | 72 | Int_t const knumVolumes=5; |
46501dfb | 73 | Int_t padADC; |
1a42d4f2 | 74 | Float_t eta, etain,etaout,rad,theta; |
cb1df35e | 75 | Int_t ivol, iSector, iRing; |
1a42d4f2 | 76 | Float_t rin[5]={4.2,15.4,4.2,15.4,4.2}; |
77 | Float_t rout[5]={17.4,28.4,17.4,28.4,17.4}; | |
2ad713c4 | 78 | Float_t z[5]={-62.8, -75.2, 83.4, 75.2, 340.}; |
46501dfb | 79 | Int_t numberOfRings[5]={512,256,512,256,512}; |
a39f3926 | 80 | Int_t numberOfSectors[5]= {20,40,20,40,20}; |
81 | Int_t numberOfEtaIntervals[5]; | |
cb1df35e | 82 | // number of ring for boundary 0.1 eta |
cb1df35e | 83 | |
88cb7938 | 84 | |
121a60bd | 85 | if (runLoader == 0x0) |
88cb7938 | 86 | { |
87 | Error("Exec","Run Loader loader is NULL - Session not opened"); | |
88 | return; | |
89 | } | |
3d44ce66 | 90 | |
121a60bd | 91 | AliLoader* plFMD = runLoader->GetLoader("FMDLoader"); |
3d44ce66 | 92 | if (plFMD == 0x0) |
88cb7938 | 93 | { |
121a60bd | 94 | Fatal("AliFMDReconstructor","Can not find FMD (loader) in specified event"); |
88cb7938 | 95 | return;//never reached |
96 | } | |
97 | ||
121a60bd | 98 | if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); |
99 | if (!runLoader->TreeE()) runLoader->LoadHeader(); | |
3d44ce66 | 100 | |
46501dfb | 101 | TDirectory* cwd = gDirectory; |
102 | gDirectory = 0x0; | |
3d44ce66 | 103 | Text_t buf1[20]; |
46501dfb | 104 | TH2F* hTotal[10]; |
105 | for (Int_t j=1; j<=5; j++){ | |
106 | sprintf(buf1,"hTotal%d",j); | |
107 | ||
108 | hTotal[j] = new TH2F(buf1," Number of primary particles ", | |
109 | numberOfSectors[j-1],1,numberOfSectors[j-1], | |
110 | numberOfRings[j-1],1,numberOfRings[j-1]); | |
111 | } | |
112 | gDirectory = cwd; | |
113 | ||
121a60bd | 114 | plFMD->LoadRecPoints("RECREATE"); |
44cc5e44 | 115 | TClonesArray* reconParticles = new TClonesArray("AliFMDReconstParticles"); |
fcc1c32e | 116 | TClonesArray* digits = new TClonesArray("AliFMDdigit"); |
44cc5e44 | 117 | |
3d44ce66 | 118 | Int_t retval=0; |
121a60bd | 119 | Int_t nevents=Int_t (runLoader->TreeE()->GetEntries()); |
3d44ce66 | 120 | #ifdef DEBUG |
121a60bd | 121 | cout<<" nevents "<<nevents<<endl; |
3d44ce66 | 122 | #endif |
121a60bd | 123 | for(Int_t ievent=0;ievent<nevents;ievent++) |
dc8af42e | 124 | { |
3d44ce66 | 125 | #ifdef DEBUG |
126 | cout<<" *** event "<<ievent<<endl; | |
127 | #endif | |
121a60bd | 128 | runLoader->GetEvent(ievent) ; |
3d44ce66 | 129 | //event z-vertex for correction eta-rad dependence |
121a60bd | 130 | AliHeader *header = runLoader->GetHeader(); |
3d44ce66 | 131 | AliGenEventHeader* genHeader = header->GenEventHeader(); |
132 | TArrayF *o = new TArrayF(3); | |
27301b0a | 133 | if (genHeader) genHeader->PrimaryVertex(*o); |
3d44ce66 | 134 | Float_t zVertex=o->At(2); |
88cb7938 | 135 | |
3d44ce66 | 136 | for (Int_t i=0; i<5; i++) |
46501dfb | 137 | hTotal[i+1]->Reset(); |
138 | ||
3d44ce66 | 139 | retval = plFMD->LoadDigits("READ"); |
46501dfb | 140 | if (retval) |
141 | { | |
142 | Error("Exec","Error occured while loading digits. Exiting."); | |
143 | return; | |
144 | } | |
145 | ||
3d44ce66 | 146 | TTree* treeD = plFMD->TreeD(); |
46501dfb | 147 | if (treeD == 0x0) |
148 | { | |
149 | Error("Exec","Can not get Tree with Digits. Nothing to reconstruct - Exiting"); | |
150 | return; | |
151 | } | |
152 | ||
153 | TBranch *brDigits=0; | |
154 | ||
155 | brDigits=treeD->GetBranch("FMD"); | |
3d44ce66 | 156 | |
46501dfb | 157 | if (brDigits) { |
44cc5e44 | 158 | brDigits->SetAddress(&digits); |
46501dfb | 159 | }else{ |
160 | cerr<<"EXEC Branch FMD digits not found"<<endl; | |
161 | return; | |
162 | } | |
163 | ||
3d44ce66 | 164 | if(plFMD->TreeR()==0) plFMD->MakeTree("R"); |
88cb7938 | 165 | |
dc8af42e | 166 | //Make branches |
44cc5e44 | 167 | const Int_t kBufferSize = 16000; |
168 | plFMD->TreeR()->Branch("FMD", &reconParticles, kBufferSize); | |
1a42d4f2 | 169 | |
37c55dc0 | 170 | |
46501dfb | 171 | Int_t zeroADC=6; |
3d44ce66 | 172 | // read Digits |
1a42d4f2 | 173 | AliFMDdigit *fmdDigit; |
44cc5e44 | 174 | if (plFMD->TreeD()->GetEvent(0)) |
175 | { | |
176 | Int_t nDigits=digits->GetEntries(); | |
46501dfb | 177 | Int_t recParticles[6]; |
178 | Int_t nRecPart=0 ; | |
3d44ce66 | 179 | Int_t zeroPads=0; |
180 | Int_t numberOfPads=0; | |
181 | Int_t pedestal; | |
182 | Float_t channelWidth=(22400*50)/1024; | |
183 | for (Int_t digit=0;digit<nDigits;digit++) | |
184 | { | |
44cc5e44 | 185 | fmdDigit=(AliFMDdigit*)digits->UncheckedAt(digit); |
3d44ce66 | 186 | ivol=fmdDigit->Volume(); |
187 | iSector=fmdDigit->NumberOfSector(); | |
188 | iRing=fmdDigit->NumberOfRing(); | |
189 | pedestal=Int_t(gRandom->Gaus(500,250)); | |
190 | padADC= fmdDigit->ADCsignal() | |
191 | -Int_t(Float_t(pedestal)/channelWidth); | |
192 | if (padADC<0) padADC=0; | |
46501dfb | 193 | hTotal[ivol]->Fill(iSector,iRing,padADC); |
3d44ce66 | 194 | } //digit loop |
195 | ||
196 | //reconstruct multiplicity in 0.1 eta according Poisson distribution | |
46501dfb | 197 | |
3d44ce66 | 198 | Int_t rmin=0; Int_t rmax=0; |
199 | Int_t smin=0; Int_t smax=0; | |
200 | for (ivol=0; ivol<knumVolumes; ivol++) | |
201 | { | |
202 | Float_t ring2number=Float_t (numberOfRings[ivol])/ | |
203 | (rout[ivol]-rin[ivol]); | |
204 | Float_t realZ=zVertex+z[ivol]; | |
205 | theta=TMath::ATan(rout[ivol]/TMath::Abs(realZ)); | |
206 | etain = - TMath::Log( TMath::Tan(theta/2.)); | |
207 | theta=TMath::ATan(rin[ivol]/TMath::Abs(realZ)); | |
208 | etaout=- TMath::Log( TMath::Tan(theta/2.)); | |
209 | numberOfEtaIntervals[ivol]=Int_t((etaout-etain)*10)-1; | |
210 | eta=etain; | |
211 | for (Int_t e1=0;e1<=numberOfEtaIntervals[ivol];e1++) | |
212 | { | |
213 | theta = 2.*TMath::ATan (TMath::Exp (-eta)); | |
214 | Float_t radmin = TMath::Abs(realZ) * (TMath::Tan (theta)); | |
215 | rmax= Int_t ( (radmin-rin[ivol])*ring2number+0.5); | |
216 | eta=eta+0.1; | |
217 | theta = 2.*TMath::ATan (TMath::Exp (-eta)); | |
218 | rad = TMath::Abs(realZ) * (TMath::Tan (theta)); | |
219 | rmin=Int_t( (rad-rin[ivol])*ring2number+0.5); | |
220 | ||
221 | zeroPads=0; | |
222 | smin=0; | |
223 | smax=numberOfSectors[ivol]; | |
224 | numberOfPads=(rmax-rmin)*(smax-smin); | |
225 | for (Int_t iring=rmin; iring<rmax; iring++) | |
226 | { | |
227 | for | |
228 | (Int_t isector=0; | |
229 | isector<numberOfSectors[ivol]; | |
230 | isector++) | |
231 | { | |
232 | if(hTotal[ivol+1]->GetBinContent(isector+1,iring+1) | |
233 | <zeroADC) zeroPads++;} | |
234 | ||
235 | } //ring | |
236 | Float_t numberOfPads=Float_t(smax-smin)*Float_t(rmax-rmin); | |
237 | ||
238 | Double_t lambda=-TMath::Log(Double_t(zeroPads)/numberOfPads); | |
239 | Int_t fRecon=Int_t (lambda*numberOfPads+0.5); | |
240 | recParticles[0]=ivol+1; | |
241 | recParticles[1]=smin; | |
242 | recParticles[2]=smax; | |
243 | recParticles[3]=rmin; | |
244 | recParticles[4]=rmax; | |
245 | recParticles[5]= fRecon; | |
44cc5e44 | 246 | new((*reconParticles)[nRecPart++]) AliFMDReconstParticles(recParticles); |
3d44ce66 | 247 | |
46501dfb | 248 | |
1a42d4f2 | 249 | } // eta |
250 | } // volume | |
cb1df35e | 251 | |
44cc5e44 | 252 | }//if (plFMD->TreeD()->GetEvent(0)) |
3d44ce66 | 253 | plFMD->TreeR()->Reset(); |
254 | plFMD->TreeR()->Fill(); | |
255 | plFMD->WriteRecPoints("OVERWRITE"); | |
256 | plFMD->UnloadDigits(); | |
dc8af42e | 257 | } //event loop |
121a60bd | 258 | plFMD->UnloadRecPoints(); |
3d44ce66 | 259 | #ifdef DEBUG |
260 | Info(" Exec"," finished"); | |
261 | #endif | |
262 | // delete hTotal[10]; | |
263 | ||
88cb7938 | 264 | } |
dc8af42e | 265 | |
121a60bd | 266 | |
267 | //_____________________________________________________________________________ | |
268 | void AliFMDReconstructor::FillESD(AliRunLoader* /*runLoader*/, | |
269 | AliESD* /*esd*/) const | |
270 | { | |
271 | // nothing to be done | |
272 | ||
273 | } | |
274 |