1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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14 **************************************************************************/
18 Revision 1.3 2007/10/22 14:20:25 kowal2
19 Hardwired "ideal" coordinates replaced with those from the DCDB.
20 Corrected bug in SetDebug method
22 Revision 1.2 2007/10/03 09:27:50 marian
23 Extra semicolon removed (Marian)
25 Revision 1.1 2007/10/01 14:12:45 kowal2
26 Class creating the aligmnent object fro the surveyor measurements.
31 // Creates the TPC align object
34 #include "AliTPCAlign.h"
35 #include "AliSurveyPoint.h"
36 #include "AliSurveyPoint.h"
39 #include "Riostream.h"
43 #include "AliSurveyObj.h"
44 #include "AliSurveyPoint.h"
45 #include "AliAlignObjParams.h"
46 #include "AliCDBStorage.h"
47 #include <TClonesArray.h>
50 #include "AliCDBManager.h"
54 AliTPCAlign::AliTPCAlign() :
65 // default constructor
68 //________________________________________________________________________
69 AliTPCAlign::AliTPCAlign(Int_t reportloc, Int_t reportglob) :
80 // constructor - defines data files
82 fFileLoc = new Char_t[80];
83 fFileGlob = new Char_t[80];
85 sprintf(path,gSystem->Getenv("ALICE_ROOT"));
87 sprintf(fFileLoc,"%s/TPC/Survey_%d_TPC.txt",path,reportloc);
88 sprintf(fFileGlob,"%s/TPC/Survey_%d_TPC.txt",path,reportglob);
92 //_________________________________________________________________________
93 AliTPCAlign::AliTPCAlign(const AliTPCAlign &align) :
104 // copy constructor - dummy
106 fDebug = align.fDebug;
108 //__________________________________________________________________________
109 AliTPCAlign & AliTPCAlign::operator =(const AliTPCAlign & align)
112 // assignment operator - dummy
118 //__________________________________________________________________________
119 AliTPCAlign::~AliTPCAlign(){
123 if(fTPCAlignObj) delete fTPCAlignObj;
125 //__________________________________________________________________________
126 Bool_t AliTPCAlign::LoadSurveyData(){
128 // for a time being it loads from the local file the surveyed point
129 // and has the ideal points hardwired. I am waiting until Ricardo
133 AliSurveyObj * s1 = new AliSurveyObj();
134 s1->FillFromLocalFile(fFileGlob);
136 Int_t numberPoints = 8;
138 TString pointNames[8] = {"T1Final_R04241","T1Final_R05241","T1Final_R06241",
139 "T1Final_R07241","T1Final_R08241","T1Final_R10241",
140 "T1Final_R11241","T1Final_R12241"};
142 Float_t surveyedPoints[8][3];
143 AliSurveyPoint *currPoint;
145 for(Int_t i=0;i<numberPoints;i++){
147 currPoint = (AliSurveyPoint *) s1->GetData()->FindObject(pointNames[i]);
150 surveyedPoints[i][0]=currPoint->GetX();
151 surveyedPoints[i][1]=currPoint->GetY();
152 surveyedPoints[i][2]=currPoint->GetZ();
154 Printf(Form("INFO: Point \"%s\" coordinates read.", pointNames[i].Data()));
158 Printf(Form("ERROR: Essential point missing: \"%s\"", pointNames[i].Data()));
166 Float_t idealPoints[8][3];
168 AliSurveyObj * s2 = new AliSurveyObj();
169 s2->FillFromLocalFile(fFileLoc);
171 TString pointNamesL[8] ={"R04","R05","R06","R07","R08","R10","R11","R12"};
173 AliSurveyPoint *currPointL;
175 for(Int_t i=0;i<numberPoints;i++){
177 currPointL = (AliSurveyPoint *) s2->GetData()->FindObject(pointNamesL[i]);
179 idealPoints[i][0]=currPointL->GetY();
180 idealPoints[i][1]=currPointL->GetZ();
181 idealPoints[i][2]=currPointL->GetX();
183 Printf(Form("INFO: Point \"%s\" coordinates read.", pointNamesL[i].Data()));
187 Printf(Form("ERROR: Essential point missing: \"%s\"", pointNamesL[i].Data()));
192 // Create and fill matrices a & y
194 for(Int_t i = 0;i<numberPoints;i++){
195 for(Int_t j=0;j<3;j++){
196 fY(i*3+j,0)=surveyedPoints[i][j]-idealPoints[i][j];
205 for(Int_t i=0;i<numberPoints;i++){
206 fA(3*i,0)= -idealPoints[i][1];
207 fA(3*i,1)= idealPoints[i][2];
209 fA(3*i+1,0)= idealPoints[i][0];
210 fA(3*i+1,2)= -idealPoints[i][2];
212 fA(3*i+2,1)= -idealPoints[i][0];
213 fA(3*i+2,2)= idealPoints[i][1];
221 //_________________________________________________________________
222 Double_t AliTPCAlign::ComputeTransform(){
224 // Here simple matrix operations for the linear least square
225 // The trigonometric function sin is approximated by the angle
226 // and the cos by "1", because angles are very small (Y-convention!)
227 // This secures the linearity of the problem
228 // This method returns a sum of squares of residuals
230 TMatrixD tt1(TMatrixD::kInverted,(TMatrixD(fA,TMatrixD::kTransposeMult,fA)));
231 fX=TMatrixD(tt1,TMatrixD::kMult,TMatrixD(fA,TMatrixD::kTransposeMult,fY));
233 TMatrixD Unit(24,24);
235 TMatrixD xxt1(TMatrixD::kInverted,TMatrixD(fA,TMatrixD::kTransposeMult,fA));
236 TMatrixD t(fA,TMatrixD::kMult,TMatrixD(xxt1,TMatrixD::kMultTranspose,fA));
237 TMatrixD t2(Unit,TMatrixD::kMinus,t);
238 TMatrixD chi2(fY,TMatrixD::kTransposeMult,TMatrixD(t2,TMatrixD::kMult,fY));
244 //_______________________________________________________________________
245 void AliTPCAlign::CreateAlignObj(){
247 // This method creates AliAlignObj and fills it with Euler angles
248 // and shifts. The units are degrees and cm.
250 fTPCAlignObj = new AliAlignObjParams();
251 fTPCAlignObj->SetSymName("ALIC_1/TPC_M_1");
252 fTPCAlignObj->SetVolUID(0);
253 Double_t raddeg = TMath::RadToDeg();
254 Double_t phi,theta,psi;
257 theta=fX(1,0)*raddeg;
264 fTPCAlignObj->SetRotation(psi,theta,phi);
265 fTPCAlignObj->SetTranslation(dx,dy,dz);
266 fTPCAlignObj->Print("");
268 //______________________________________________________________________
269 void AliTPCAlign::Run(){
271 // runs the full chain
274 Bool_t flag = LoadSurveyData();
276 cout<<"Missing points"<<endl;
279 Double_t chi2 = ComputeTransform();
280 if(chi2>0.01) return;
285 //_________________________________________________________________________
286 void AliTPCAlign::StoreAlignObj(){
288 AliCDBManager* cdb = AliCDBManager::Instance();
289 if(!cdb->IsDefaultStorageSet()) cdb->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
291 TClonesArray *array = new TClonesArray("AliAlignObjParams",1);
296 fTPCAlignObj->GetPars(shifts,rots);
297 new((*array)[0]) AliAlignObjParams(fTPCAlignObj->GetSymName(),0,shifts[0],
298 shifts[1],shifts[2],rots[0],rots[1],rots[2],kTRUE);
301 // storing either in the OCDB or local file
303 if( TString(gSystem->Getenv("TOCDB")) != TString("kTRUE") ){
305 const char* filename = "TPCSurveyMisalignment.root";
307 sprintf(fullname,"%s/TPC/%s",gSystem->Getenv("ALICE_ROOT"),filename);
308 TFile *f = new TFile(fullname,"RECREATE");
310 AliError("cannot open file for output\n");
313 AliInfo(Form("Saving alignment objects to the file %s", filename));
315 f->WriteObject(array,"TPCAlignObjs","kSingleKey");
318 // save in CDB storage
319 AliCDBStorage* storage;
321 TString Storage = gSystem->Getenv("STORAGE");
322 if(!Storage.BeginsWith("local://") && !Storage.BeginsWith("alien://")) {
324 "STORAGE variable set to %s is not valid. Exiting\n",Storage.Data()));
327 storage = cdb->GetStorage(Storage.Data());
329 AliError(Form("Unable to open storage %s\n",Storage.Data()));
333 AliCDBMetaData* md = new AliCDBMetaData();
334 md->SetResponsible("Marek Kowalski");
335 md->SetComment("Full misalignment of entire TPC from surveyors");
336 AliCDBId id("TPC/Align/Data",0,AliCDBRunRange::Infinity());
337 storage->Put(array,id,md);