1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
19 /// \file MUONAlignment.C
20 /// \brief Macro for MUON alignment using physics tracks.
22 /// The macro uses the AliMUONAlignment class to calculate the alignment parameters.
23 /// An array for the alignment parameters is created and can be filled with
24 /// initial values that will be used as starting values by the alignment
27 /// By default the macro run over galice.root in the working directory. If a file list
28 /// of galice.root is provided as third argument the macro will run over all files.
29 /// The macro loop over the files, events and tracks. For each track
30 /// AliMUONAlignment::ProcessTrack(AliMUONTrack * track) and then
31 /// AliMUONAlignment::LocalFit(Int_t iTrack, Double_t *lTrackParam, Int_t
32 /// lSingleFit) are called. After all tracks have been procesed and fitted
33 /// AliMUONAlignment::GlobalFit(Double_t *parameters,Double_t *errors,Double_t *pulls)
34 /// is called. The array parameters contains the obatained misalignement parameters.
35 /// A realigned geometry is generated in a local CDB.
37 /// \author: B. Becker and J. Castillo
39 #if !defined(__CINT__) || defined(__MAKECINT__)
41 #include "AliMUONAlignment.h"
42 #include "AliMUONTrack.h"
43 #include "AliMUONTrackExtrap.h"
44 #include "AliMUONTrackParam.h"
45 #include "AliMUONGeometryTransformer.h"
46 #include "AliMUONESDInterface.h"
48 #include "AliESDEvent.h"
49 #include "AliESDMuonTrack.h"
51 #include "AliTracker.h"
52 #include "AliCDBManager.h"
53 #include "AliCDBMetaData.h"
55 #include "AliGeomManager.h"
60 #include <TGraphErrors.h>
63 #include <TClonesArray.h>
64 #include <Riostream.h>
70 void MUONAlignment(Int_t nEvents = 100000, char* geoFilename = "geometry.root", TString esdFileName = "AliESDs.root", TString fileList = "")
73 // Import TGeo geometry (needed by AliMUONTrackExtrap::ExtrapToVertex)
74 if ( ! AliGeomManager::GetGeometry() ) {
75 AliGeomManager::LoadGeometry(geoFilename);
76 if (! AliGeomManager::GetGeometry() ) {
77 Error("MUONAlignment", "getting geometry from file %s failed", geoFilename);
83 // waiting for mag field in CDB
84 if (!TGeoGlobalMagField::Instance()->GetField()) {
85 printf("Loading field map...\n");
86 // AliMagF* field = new AliMagF("Maps","Maps",2,1.,1., 10.,AliMagF::k5kG);
87 AliMagF* field = new AliMagF("Maps","Maps",2,0.,0., 10.,AliMagF::k5kG);
88 TGeoGlobalMagField::Instance()->SetField(field);
90 // set the magnetic field for track extrapolations
91 AliMUONTrackExtrap::SetField();
93 Double_t parameters[4*156];
94 Double_t errors[4*156];
95 Double_t pulls[4*156];
96 for(Int_t k=0;k<4*156;k++) {
102 Double_t trackParams[8] = {0.,0.,0.,0.,0.,0.,0.,0.};
104 // Set initial values here, good guess may help convergence
107 // parameters[iPar++] = 0.010300 ; parameters[iPar++] = 0.010600 ; parameters[iPar++] = 0.000396 ;
111 if (fileList.Contains(".list")) {
112 cout << "Reading file list: " << fileList.Data() << endl;
115 TString fullListName(".");
117 fullListName +=fileList;
118 sFileList.open(fileList.Data());
121 TH1F *fInvBenMom = new TH1F("fInvBenMom","fInvBenMom",200,-0.1,0.1);
122 TH1F *fBenMom = new TH1F("fBenMom","fBenMom",200,-40,40);
124 AliMUONAlignment* alig = new AliMUONAlignment();
125 alig->InitGlobalParameters(parameters);
127 AliMUONGeometryTransformer *transform = new AliMUONGeometryTransformer();
128 transform->LoadGeometryData();
129 alig->SetGeometryTransformer(transform);
131 // Do alignment with magnetic field off
132 alig->SetBFieldOn(kFALSE);
134 // Set tracking station to use
135 Bool_t bStOnOff[5] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
136 Bool_t bChOnOff[10] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
138 // Set degrees of freedom to align (see AliMUONAlignment)
139 alig->AllowVariations(bChOnOff);
141 // Fix parameters or add constraints here
142 // for (Int_t iSt=0; iSt<5; iSt++)
143 // if (!bStOnOff[iSt]) alig->FixStation(iSt+1);
144 for (Int_t iCh=0; iCh<10; iCh++)
145 if (!bChOnOff[iCh]) alig->FixChamber(iCh+1);
147 // Left and right sides of the detector are independent, one can choose to align
149 Bool_t bSpecLROnOff[2] = {kTRUE,kTRUE};
150 alig->FixHalfSpectrometer(bChOnOff,bSpecLROnOff);
152 alig->SetChOnOff(bChOnOff);
153 alig->SetSpecLROnOff(bChOnOff);
155 // Here we can fix some detection elements
156 alig->FixDetElem(908);
157 alig->FixDetElem(1020);
159 // Set predifined global constrains: X, Y, P, XvsZ, YvsZ, PvsZ, XvsY, YvsY, PvsY
160 Bool_t bVarXYT[9] = {kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE,kTRUE};
161 Bool_t bDetTLBR[4] = {kFALSE,kTRUE,kFALSE,kTRUE};
162 // alig->AddConstraints(bChOnOff,bVarXYT,bDetTLBR,bSpecLROnOff);
167 Int_t lMaxFile = 1000;
170 bool bKeepLoop = kTRUE;
174 while(bKeepLoop && iFile<lMaxFile){
177 sFileList.getline(cFileName,100);
178 if (sFileList.eof()) bKeepLoop = kFALSE;
181 sprintf(cFileName,esdFileName.Data());
184 if (!strstr(cFileName,"AliESDs")) continue;
185 cout << "Using file: " << cFileName << endl;
188 TFile* esdFile = TFile::Open(cFileName); // open the file
189 if (!esdFile || !esdFile->IsOpen()) {
190 cout << "opening ESD file " << cFileName << "failed" << endl;
193 TTree* esdTree = (TTree*) esdFile->Get("esdTree"); // get the tree
195 cout << "no ESD tree found" << endl;
199 AliESDEvent* esdEvent = new AliESDEvent(); // link ESD event to the tree
200 esdEvent->ReadFromTree(esdTree);
202 Int_t nevents = esdTree->GetEntries();
203 cout << "... with " << nevents << endl;
204 for(Int_t event = 0; event < nevents; event++) {
205 if (iEvent >= nEvents){
211 if (esdTree->GetEvent(event) <= 0) {
212 cout << "fails to read ESD object for event " << event << endl;
216 Int_t nTracks = Int_t(esdEvent->GetNumberOfMuonTracks());
217 if (!event%100) cout << " there are " << nTracks << " tracks in event " << event << endl;
218 for (Int_t iTrack = 0; iTrack < nTracks; iTrack++) {
219 AliESDMuonTrack* esdTrack = esdEvent->GetMuonTrack(iTrack);
220 if (!esdTrack->ClustersStored()) continue;
221 Double_t invBenMom = esdTrack->GetInverseBendingMomentum();
222 fInvBenMom->Fill(invBenMom);
223 fBenMom->Fill(1./invBenMom);
224 if (TMath::Abs(invBenMom)<=1.04) {
226 AliMUONESDInterface::ESDToMUON(*esdTrack, track);
227 alig->ProcessTrack(&track);
228 alig->LocalFit(iTrackOk++,trackParams,0);
235 cout << "Processed " << iTrackTot << " Tracks so far." << endl;
237 alig->GlobalFit(parameters,errors,pulls);
239 cout << "Done with GlobalFit " << endl;
242 Double_t DEid[156] = {0};
243 Double_t MSDEx[156] = {0};
244 Double_t MSDEy[156] = {0};
245 Double_t MSDEz[156] = {0};
246 Double_t MSDEp[156] = {0};
247 Double_t DEidErr[156] = {0};
248 Double_t MSDExErr[156] = {0};
249 Double_t MSDEyErr[156] = {0};
250 Double_t MSDEzErr[156] = {0};
251 Double_t MSDEpErr[156] = {0};
252 Int_t lNDetElem = 4*2+4*2+18*2+26*2+26*2;
253 Int_t lNDetElemCh[10] = {4,4,4,4,18,18,26,26,26,26};
254 // Int_t lSNDetElemCh[10] = {4,8,12,16,34,52,78,104,130,156};
255 Int_t idOffset = 0; // 400
256 Int_t lSDetElemCh = 0;
257 for(Int_t iDE=0; iDE<lNDetElem; iDE++){
259 DEid[iDE] = idOffset+100;
262 for(Int_t iCh=0; iCh<9; iCh++){
263 lSDetElemCh += lNDetElemCh[iCh];
264 if (iDE>=lSDetElemCh) {
266 DEid[iDE] -= lNDetElemCh[iCh];
269 MSDEx[iDE]=parameters[4*iDE+0];
270 MSDEy[iDE]=parameters[4*iDE+1];
271 MSDEz[iDE]=parameters[4*iDE+3];
272 MSDEp[iDE]=parameters[4*iDE+2];
273 MSDExErr[iDE]=(Double_t)alig->GetParError(4*iDE+0);
274 MSDEyErr[iDE]=(Double_t)alig->GetParError(4*iDE+1);
275 MSDEzErr[iDE]=(Double_t)alig->GetParError(4*iDE+3);
276 MSDEpErr[iDE]=(Double_t)alig->GetParError(4*iDE+2);
279 cout << "Let's create graphs ... " << endl;
281 TGraphErrors *gMSDEx = new TGraphErrors(lNDetElem,DEid,MSDEx,DEidErr,MSDExErr);
282 TGraphErrors *gMSDEy = new TGraphErrors(lNDetElem,DEid,MSDEy,DEidErr,MSDEyErr);
283 TGraphErrors *gMSDEz = new TGraphErrors(lNDetElem,DEid,MSDEz,DEidErr,MSDEzErr);
284 TGraphErrors *gMSDEp = new TGraphErrors(lNDetElem,DEid,MSDEp,DEidErr,MSDEpErr);
286 cout << "... graphs created, open file ... " << endl;
288 TFile *hFile = new TFile("measShifts.root","RECREATE");
290 cout << "... file opened ... " << endl;
292 gMSDEx->Write("gMSDEx");
293 gMSDEy->Write("gMSDEy");
294 gMSDEz->Write("gMSDEz");
295 gMSDEp->Write("gMSDEp");
300 cout << "... and closed!" << endl;
302 AliMUONGeometryTransformer *newTransform = alig->ReAlign(transform,parameters,true);
303 newTransform->WriteTransformations("transform2ReAlign.dat");
305 // Generate realigned data in local cdb
306 const TClonesArray* array = newTransform->GetMisAlignmentData();
308 // 100 mum residual resolution for chamber misalignments?
309 alig->SetAlignmentResolution(array,-1,0.01,0.01,0.004,0.003);
312 AliCDBManager* cdbManager = AliCDBManager::Instance();
313 cdbManager->SetDefaultStorage("local://ReAlignCDB");
315 AliCDBMetaData* cdbData = new AliCDBMetaData();
316 cdbData->SetResponsible("Dimuon Offline project");
317 cdbData->SetComment("MUON alignment objects with residual misalignment");
318 AliCDBId id("MUON/Align/Data", 0, AliCDBRunRange::Infinity());
319 cdbManager->Put(const_cast<TClonesArray*>(array), id, cdbData);