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af9df62e | 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 | // Macro for MUON alignment using physics tracks. The macro uses AliMUONAlignment | |
20 | // class to calculate the alignment parameters. | |
21 | // An array for the alignment parameters is created and can be filled with | |
22 | // initial values that will be used as starting values by the alignment | |
23 | // algorithm. | |
24 | // Ny default the macro run over galice.root in the working directory. If a file list | |
25 | // of galice.root is provided as third argument the macro will run over all files. | |
26 | // The macro loop over the files, events and tracks. For each track | |
27 | // AliMUONAlignment::ProcessTrack(AliMUONTrack * track) and then | |
28 | // AliMUONAlignment::LocalFit(Int_t iTrack, Double_t *lTrackParam, Int_t | |
29 | // lSingleFit) are called. After all tracks have been procesed and fitted | |
30 | // AliMUONAlignment::GlobalFit(Double_t *parameters,Double_t *errors,Double_t *pulls) | |
31 | // is called. The array parameters contains the obatained misalignement parameters. | |
32 | // A realigned geometry is generated in a local CDB. | |
33 | // | |
34 | // Authors: B. Becker and J. Castillo | |
35 | // --- | |
36 | ||
59830a87 | 37 | void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString fileName = "galice.root", TString fileList = "") |
af9df62e | 38 | { |
39 | ||
59830a87 | 40 | // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex) |
41 | if (!gGeoManager) { | |
42 | TGeoManager::Import(geoFilename); | |
43 | if (!gGeoManager) { | |
44 | Error("MUONmass_ESD", "getting geometry from file %s failed", geoFilename); | |
45 | return; | |
46 | } | |
47 | } | |
48 | ||
49 | // set mag field | |
50 | // waiting for mag field in CDB | |
51 | printf("Loading field map...\n"); | |
52 | AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 1, 1., 10., AliMagFMaps::k5kG); | |
53 | AliTracker::SetFieldMap(field, kFALSE); | |
54 | // set the magnetic field for track extrapolations | |
55 | AliMUONTrackExtrap::SetField(AliTracker::GetFieldMap()); | |
56 | ||
af9df62e | 57 | Double_t parameters[3*156]; |
58 | Double_t errors[3*156]; | |
59 | Double_t pulls[3*156]; | |
60 | for(Int_t k=0;k<3*156;k++) { | |
61 | parameters[k]=0.; | |
62 | errors[k]=0.; | |
63 | pulls[k]=0.; | |
64 | } | |
65 | ||
66 | Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.}; | |
67 | ||
68 | Int_t iPar = 0; | |
69 | // Set initial values here, good guess may help convergence | |
70 | // St 1 | |
71 | // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ; | |
72 | ||
73 | bool bLoop = kFALSE; | |
74 | ifstream sFileList; | |
75 | if (fileList.Contains(".list")) { | |
76 | cout << "Reading file list: " << fileList.Data() << endl; | |
77 | bLoop = kTRUE; | |
78 | ||
79 | TString fullListName("."); | |
80 | fullListName +="/"; | |
81 | fullListName +=fileList; | |
82 | sFileList.open(fileList.Data()); | |
83 | } | |
84 | ||
85 | TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1); | |
86 | TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40); | |
87 | ||
88 | AliMUONAlignment* alig = new AliMUONAlignment(); | |
89 | alig->InitGlobalParameters(parameters); | |
90 | ||
91 | AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer(true); | |
59830a87 | 92 | transform->ReadGeometryData("volpath.dat", gGeoManager); |
af9df62e | 93 | alig->SetGeometryTransformer(transform); |
587965bd | 94 | |
95 | // Set tracking station to use | |
96 | Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE}; | |
97 | ||
98 | // Fix parameters or add constraints here | |
99 | for (Int_t iSt=0; iSt<5; iSt++) | |
100 | if (!bStOnOff[iSt]) alig->FixStation(iSt+1); | |
101 | ||
102 | // Left and right sides of the detector are independent, one can choose to align | |
103 | // only one side | |
104 | Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE}; | |
105 | alig->FixHalfSpectrometer(bStOnOff,bSpecLROnOff); | |
106 | ||
107 | // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY | |
108 | Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE}; | |
109 | Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE}; | |
110 | alig->AddConstraints(bStOnOff,bVarXYT,bDetTLBR,bSpecLROnOff); | |
111 | ||
af9df62e | 112 | |
113 | char cFileName[100]; | |
114 | AliMUONDataInterface amdi; | |
115 | ||
116 | Int_t lMaxFile = 1000; | |
117 | Int_t iFile = 0; | |
587965bd | 118 | Int_t iEvent = 0; |
af9df62e | 119 | bool bKeepLoop = kTRUE; |
587965bd | 120 | Int_t iTrackTot=0; |
121 | Int_t iTrackOk=0; | |
122 | ||
af9df62e | 123 | while(bKeepLoop && iFile<lMaxFile){ |
124 | iFile++; | |
125 | if (bLoop) { | |
126 | sFileList.getline(cFileName,100); | |
127 | if (sFileList.eof()) bKeepLoop = kFALSE; | |
128 | } | |
129 | else { | |
130 | sprintf(cFileName,fileName.Data()); | |
131 | bKeepLoop = kFALSE; | |
132 | } | |
133 | if (!strstr(cFileName,"galice.root")) continue; | |
134 | cout << "Using file: " << cFileName << endl; | |
135 | amdi.SetFile(cFileName); | |
136 | Int_t nevents = amdi.NumberOfEvents(); | |
587965bd | 137 | cout << "... with " << nevents << endl; |
af9df62e | 138 | for(Int_t event = 0; event < nevents; event++) { |
139 | amdi.GetEvent(event); | |
587965bd | 140 | if (iEvent >= nEvents){ |
141 | bKeepLoop = kFALSE; | |
142 | break; | |
143 | } | |
144 | iEvent++; | |
145 | ||
af9df62e | 146 | Int_t ntracks = amdi.NumberOfRecTracks(); |
587965bd | 147 | if (!event%100) |
148 | cout << " there are " << ntracks << " tracks in event " << event << endl; | |
af9df62e | 149 | Int_t iTrack=0; |
af9df62e | 150 | AliMUONTrack* track = amdi.RecTrack(iTrack); |
151 | while(track) { | |
8cde4af5 | 152 | AliMUONTrackParam trackParam(*((AliMUONTrackParam*)(track->GetTrackParamAtHit()->First()))); |
153 | AliMUONTrackExtrap::ExtrapToVertex(&trackParam,0.,0.,0.); | |
154 | Double_t invBenMom = trackParam.GetInverseBendingMomentum(); | |
af9df62e | 155 | fInvBenMom->Fill(invBenMom); |
156 | fBenMom->Fill(1./invBenMom); | |
157 | if (TMath::Abs(invBenMom)<=1.04) { | |
af9df62e | 158 | alig->ProcessTrack(track); |
af9df62e | 159 | alig->LocalFit(iTrackOk++,trackParams,0); |
160 | } | |
161 | iTrack++; | |
587965bd | 162 | iTrackTot++; |
af9df62e | 163 | track = amdi.RecTrack(iTrack); |
164 | } | |
165 | } | |
587965bd | 166 | cout << "Processed " << iTrackTot << " Tracks so far." << endl; |
af9df62e | 167 | } |
168 | alig->GlobalFit(parameters,errors,pulls); | |
169 | ||
170 | cout << "Done with GlobalFit " << endl; | |
171 | ||
172 | // Store results | |
173 | Double_t DEid[156] = {0}; | |
174 | Double_t MSDEx[156] = {0}; | |
175 | Double_t MSDEy[156] = {0}; | |
176 | Double_t MSDExt[156] = {0}; | |
177 | Double_t MSDEyt[156] = {0}; | |
178 | Double_t DEidErr[156] = {0}; | |
179 | Double_t MSDExErr[156] = {0}; | |
180 | Double_t MSDEyErr[156] = {0}; | |
181 | Double_t MSDExtErr[156] = {0}; | |
182 | Double_t MSDEytErr[156] = {0}; | |
183 | Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2; | |
184 | Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26}; | |
185 | Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156}; | |
186 | Int_t idOffset = 0; // 400 | |
187 | Int_t lSDetElemCh = 0; | |
188 | for(Int_t iDE=0; iDE<lNDetElem; iDE++){ | |
189 | DEidErr[iDE] = 0.; | |
190 | DEid[iDE] = idOffset+100; | |
191 | DEid[iDE] += iDE; | |
192 | lSDetElemCh = 0; | |
193 | for(Int_t iCh=0; iCh<9; iCh++){ | |
194 | lSDetElemCh += lNDetElemCh[iCh]; | |
195 | if (iDE>=lSDetElemCh) { | |
196 | DEid[iDE] += 100; | |
197 | DEid[iDE] -= lNDetElemCh[iCh]; | |
198 | } | |
199 | } | |
200 | MSDEx[iDE]=parameters[3*iDE+0]; | |
201 | MSDEy[iDE]=parameters[3*iDE+1]; | |
202 | MSDExt[iDE]=parameters[3*iDE+2]; | |
203 | MSDEyt[iDE]=parameters[3*iDE+2]; | |
204 | MSDExErr[iDE]=(Double_t)alig->GetParError(3*iDE+0); | |
205 | MSDEyErr[iDE]=(Double_t)alig->GetParError(3*iDE+1); | |
206 | MSDExtErr[iDE]=(Double_t)alig->GetParError(3*iDE+2); | |
207 | MSDEytErr[iDE]=(Double_t)alig->GetParError(3*iDE+2); | |
208 | } | |
209 | ||
210 | cout << "Let's create graphs ... " << endl; | |
211 | ||
212 | TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr); | |
213 | TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr); | |
214 | TGraphErrors *gMSDExt = new TGraphErrors(lNDetElem,DEid,MSDExt,DEidErr,MSDExtErr); | |
215 | TGraphErrors *gMSDEyt = new TGraphErrors(lNDetElem,DEid,MSDEyt,DEidErr,MSDEytErr); | |
216 | ||
217 | cout << "... graphs created, open file ... " << endl; | |
218 | ||
219 | TFile *hFile = new TFile("measShifts.root","RECREATE"); | |
220 | ||
221 | cout << "... file opened ... " << endl; | |
222 | ||
223 | gMSDEx->Write("gMSDEx"); | |
224 | gMSDEy->Write("gMSDEy"); | |
225 | gMSDExt->Write("gMSDExt"); | |
226 | gMSDEyt->Write("gMSDEyt"); | |
227 | fInvBenMom->Write(); | |
228 | fBenMom->Write(); | |
229 | hFile->Close(); | |
230 | ||
231 | cout << "... and closed!" << endl; | |
232 | // Re Align | |
233 | AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true); | |
234 | newTransform->WriteTransformations("transform2ReAlign.dat"); | |
235 | ||
236 | // Generate realigned data in local cdb | |
237 | TClonesArray* array = newTransform->GetMisAlignmentData(); | |
238 | ||
239 | // CDB manager | |
240 | AliCDBManager* cdbManager = AliCDBManager::Instance(); | |
241 | cdbManager->SetDefaultStorage("local://ReAlignCDB"); | |
242 | ||
243 | AliCDBMetaData* cdbData = new AliCDBMetaData(); | |
244 | cdbData->SetResponsible("Dimuon Offline project"); | |
245 | cdbData->SetComment("MUON alignment objects with residual misalignment"); | |
246 | AliCDBId id("MUON/Align/Data", 0, 0); | |
247 | cdbManager->Put(array, id, cdbData); | |
248 | ||
249 | } |