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 **************************************************************************/
17 ///////////////////////////////////////////////////////////////////////////////
19 // An AliTRDalignment object contains the alignment data (3 shifts and 3 //
20 // tilts) for all the alignable volumes of the TRD, i.e. for 18 supermodules //
21 // and 540 chambers. The class provides simple tools for reading and writing //
22 // these data in different formats, and for generating fake data that can be //
23 // used to simulate misalignment. //
24 // The six alignment variables have the following meaning: //
28 // tilt around rphi //
31 // The shifts are in cm and the tilts are in degrees. //
32 // The currently supported formats are: //
34 // - root file containing a TClonesArray of alignment objects //
35 // - offline conditions database //
36 // - OCDB-like root file //
37 // - geometry file (like misaligned_geometry.root) //
39 // Some examples of usage (in an aliroot session): //
40 // AliTRDalignment a,b,c,d,e; //
41 // double xsm[]={0,0,0,-70,0,0}; //
42 // double xch[]={0,0,-50,0,0,0}; //
44 // a.SetCh(120,xch); //
45 // a.WriteAscii("kuku.dat"); //
46 // TGeoManager::Import("geometry.root"); a.WriteRoot("kuku.root"); //
47 // TGeoManager::Import("geometry.root"); a.WriteDB("kukudb.root",0,0); //
48 // TGeoManager::Import("geometry.root"); //
49 // a.WriteDB("local://$ALICE_ROOT", "TRD/Align/Data", 0,0); //
50 // TGeoManager::Import("geometry.root"); a.WriteGeo("kukugeometry.root"); //
52 // b.ReadAscii("kuku.dat"); //
53 // TGeoManager::Import("geometry.root"); c.ReadRoot("kuku.root"); //
54 // TGeoManager::Import("geometry.root"); d.ReadDB("kukudb.root"); //
55 // TGeoManager::Import("kukugeometry.root"); e.ReadCurrentGeo(); //
64 // D.Miskowiec, November 2006 //
66 ///////////////////////////////////////////////////////////////////////////////
74 #include "TGeoManager.h"
75 #include "TGeoPhysicalNode.h"
76 #include "TClonesArray.h"
82 #include "AliAlignObj.h"
83 #include "AliAlignObjParams.h"
84 #include "AliCDBManager.h"
85 #include "AliCDBStorage.h"
86 #include "AliCDBMetaData.h"
87 #include "AliCDBEntry.h"
89 #include "AliSurveyObj.h"
90 #include "AliSurveyPoint.h"
92 #include "AliTRDalignment.h"
94 void trdAlignmentFcn(Int_t &npar, Double_t *gin, Double_t &f, Double_t *x, Int_t iflag);
96 ClassImp(AliTRDalignment)
98 //_____________________________________________________________________________
99 AliTRDalignment::AliTRDalignment()
110 for (int i=0; i<18; i++) for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
111 fSurveyX[i][j][k][l] = 0.0;
112 fSurveyY[i][j][k][l] = 0.0;
113 fSurveyZ[i][j][k][l] = 0.0;
114 fSurveyEX[i][j][k][l] = 0.0;
115 fSurveyEY[i][j][k][l] = 0.0;
116 fSurveyEZ[i][j][k][l] = 0.0;
119 // Initialize the nominal positions of the survey points
120 // in the local frame of supermodule (where y is the long side,
121 // z corresponds to the radius in lab, and x to the phi in lab).
122 // Four survey marks are on each z-side of the supermodule.
124 // ----o-----------o---- x |
129 // ---o-----o--- -------------->
132 // For the purpose of this explanation lets define the origin such that
133 // the supermodule occupies 0 < x < 77.9 cm. Then the coordinates (x,y)
141 double x[2] = {22.5,30.25}; // lab phi, or tracking-y
142 double y[2] = {353.0, -353.0}; // lab z; inc. 2 cm survey target offset
143 double z[2] = {-(77.9/2.0-2.0),77.9/2.0-1.5}; // lab r, or better tracking-x
145 for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
146 fSurveyX0[j][k][l] = -TMath::Power(-1,l) * x[k];
147 fSurveyY0[j][k][l] = y[j];
148 fSurveyZ0[j][k][l] = z[k];
153 //_____________________________________________________________________________
154 AliTRDalignment::AliTRDalignment(const AliTRDalignment& source)
156 ,fComment(source.fComment)
163 for (int i=0; i<18; i++) SetSm(i,source.fSm[i]);
164 for (int i=0; i<540; i++) SetCh(i,source.fCh[i]);
165 for (int i=0; i<18; i++) for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
166 fSurveyX[i][j][k][l] = source.fSurveyX[i][j][k][l];
167 fSurveyY[i][j][k][l] = source.fSurveyY[i][j][k][l];
168 fSurveyZ[i][j][k][l] = source.fSurveyZ[i][j][k][l];
169 fSurveyEX[i][j][k][l] = source.fSurveyEX[i][j][k][l];
170 fSurveyEY[i][j][k][l] = source.fSurveyEY[i][j][k][l];
171 fSurveyEZ[i][j][k][l] = source.fSurveyEZ[i][j][k][l];
173 for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
174 fSurveyX0[j][k][l] = source.fSurveyX0[j][k][l];
175 fSurveyY0[j][k][l] = source.fSurveyY0[j][k][l];
176 fSurveyZ0[j][k][l] = source.fSurveyZ0[j][k][l];
181 //_____________________________________________________________________________
182 AliTRDalignment& AliTRDalignment::operator=(const AliTRDalignment &source)
185 // assignment operator
188 if (this != &source) {
189 for (int i = 0; i < 18; i++) SetSm(i,source.fSm[i]);
190 for (int i = 0; i < 540; i++) SetCh(i,source.fCh[i]);
191 for (int i=0; i<18; i++) for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
192 fSurveyX[i][j][k][l] = source.fSurveyX[i][j][k][l];
193 fSurveyY[i][j][k][l] = source.fSurveyY[i][j][k][l];
194 fSurveyZ[i][j][k][l] = source.fSurveyZ[i][j][k][l];
195 fSurveyEX[i][j][k][l] = source.fSurveyEX[i][j][k][l];
196 fSurveyEY[i][j][k][l] = source.fSurveyEY[i][j][k][l];
197 fSurveyEZ[i][j][k][l] = source.fSurveyEZ[i][j][k][l];
199 for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
200 fSurveyX0[j][k][l] = source.fSurveyX0[j][k][l];
201 fSurveyY0[j][k][l] = source.fSurveyY0[j][k][l];
202 fSurveyZ0[j][k][l] = source.fSurveyZ0[j][k][l];
204 fComment = source.fComment;
211 //_____________________________________________________________________________
212 AliTRDalignment& AliTRDalignment::operator*=(double fac)
215 // multiplication operator
218 for (int i = 0; i < 18; i++) for (int j = 0; j < 6; j++) this->fSm[i][j] *= fac;
219 for (int i = 0; i < 540; i++) for (int j = 0; j < 6; j++) this->fCh[i][j] *= fac;
225 //_____________________________________________________________________________
226 AliTRDalignment& AliTRDalignment::operator+=(const AliTRDalignment &source)
232 for (int i = 0; i < 18; i++) for (int j = 0; j < 6; j++) this->fSm[i][j] += source.fSm[i][j];
233 for (int i = 0; i < 540; i++) for (int j = 0; j < 6; j++) this->fCh[i][j] += source.fCh[i][j];
239 //_____________________________________________________________________________
240 AliTRDalignment& AliTRDalignment::operator-=(const AliTRDalignment &source)
243 // subtraction operator
246 for (int i = 0; i < 18; i++) for (int j = 0; j < 6; j++) fSm[i][j] -= source.fSm[i][j];
247 for (int i = 0; i < 540; i++) for (int j = 0; j < 6; j++) fCh[i][j] -= source.fCh[i][j];
253 //_____________________________________________________________________________
254 Bool_t AliTRDalignment::operator==(const AliTRDalignment &source) const
257 // comparison operator
262 for (int i = 0; i < 18; i++) for (int j = 0; j < 6; j++) areEqual &= (fSm[i][j] == source.fSm[i][j]);
263 for (int i = 0; i < 540; i++) for (int j = 0; j < 6; j++) areEqual &= (fCh[i][j] == source.fCh[i][j]);
269 //_____________________________________________________________________________
270 void AliTRDalignment::SetSmZero()
273 // reset to zero supermodule data
276 memset(&fSm[0][0],0,sizeof(fSm));
280 //_____________________________________________________________________________
281 void AliTRDalignment::SetChZero()
284 // reset to zero chamber data
287 memset(&fCh[0][0],0,sizeof(fCh));
291 //_____________________________________________________________________________
292 void AliTRDalignment::SetSmRandom(double a[6])
295 // generate random gaussian supermodule data with sigmas a
300 for (int i = 0; i < 18; i++) {
301 fRan.Rannor(x[0],x[1]);
302 fRan.Rannor(x[2],x[3]);
303 fRan.Rannor(x[4],x[5]);
304 for (int j = 0; j < 6; j++) x[j] *= a[j];
311 //_____________________________________________________________________________
312 void AliTRDalignment::SetChRandom(double a[6])
315 // generate random gaussian chamber data with sigmas a
320 for (int i = 0; i < 540; i++) {
321 fRan.Rannor(x[0],x[1]);
322 fRan.Rannor(x[2],x[3]);
323 fRan.Rannor(x[4],x[5]);
324 for (int j = 0; j < 6; j++) x[j] *= a[j];
331 //_____________________________________________________________________________
332 void AliTRDalignment::SetSmFull()
335 // generate random gaussian supermodule data similar to the misalignment
336 // expected from the mechanical precision
344 a[3] = 0.4/1000.0 / TMath::Pi()*180.0; // phi
345 a[4] = 2.0/1000.0 / TMath::Pi()*180.0; // z
346 a[5] = 0.4/1000.0 / TMath::Pi()*180.0; // r
352 //_____________________________________________________________________________
353 void AliTRDalignment::SetChFull()
356 // generate random gaussian chamber data similar to the misalignment
357 // expected from the mechanical precision
365 a[3] = 1.0/1000.0 / TMath::Pi()*180.0; // phi
366 a[4] = 1.0/1000.0 / TMath::Pi()*180.0; // z
367 a[5] = 0.7/1000.0 / TMath::Pi()*180.0; // r
373 //_____________________________________________________________________________
374 void AliTRDalignment::SetSmResidual()
377 // generate random gaussian supermodule data similar to the misalignment
378 // remaining after full calibration
379 // I assume that it will be negligible
386 //_____________________________________________________________________________
387 void AliTRDalignment::SetChResidual()
390 // generate random gaussian chamber data similar to the misalignment
391 // remaining after full calibration
399 a[3] = 0.3/1000.0 / TMath::Pi()*180.0; // phi
400 a[4] = 0.3/1000.0 / TMath::Pi()*180.0; // z
401 a[5] = 0.1/1000.0 / TMath::Pi()*180.0; // r
407 //_____________________________________________________________________________
408 void AliTRDalignment::PrintSm(int i, FILE *fp) const
411 // print the supermodule data
414 fprintf(fp,"%4d %11.4f %11.4f %11.4f %11.5f %11.5f %11.5f %6d %s\n"
415 ,i,fSm[i][0],fSm[i][1],fSm[i][2],fSm[i][3],fSm[i][4],fSm[i][5]
420 //_____________________________________________________________________________
421 void AliTRDalignment::PrintCh(int i, FILE *fp) const
424 // print the chamber data
427 fprintf(fp,"%4d %11.4f %11.4f %11.4f %11.5f %11.5f %11.5f %6d %s\n"
428 ,i,fCh[i][0],fCh[i][1],fCh[i][2],fCh[i][3],fCh[i][4],fCh[i][5]
429 ,GetVoi(i),GetChName(i));
433 //_____________________________________________________________________________
434 void AliTRDalignment::ReadAscii(char *filename)
437 // read the alignment data from ascii file
440 double x[6]; // alignment data
441 int volid; // volume id
442 std::string syna; // symbolic name
443 int j; // dummy index
445 fstream fi(filename,fstream::in);
447 AliError(Form("cannot open input file %s",filename));
453 for (int i = 0; i < 18; i++) {
454 fi>>j>>x[0]>>x[1]>>x[2]>>x[3]>>x[4]>>x[5]>>volid>>syna;
455 if (j != i) AliError(Form("sm %d expected, %d found",i,j));
456 if (volid != 0) AliError(Form("sm %d volume id %d expected, %d found",i,0,volid));
457 std::string symnam = GetSmName(i);
458 if (syna != symnam) AliError(Form("sm %d name %s expected, %s found",i,symnam.data(),syna.data()));
464 for (int i = 0; i < 540; i++) {
465 fi>>j>>x[0]>>x[1]>>x[2]>>x[3]>>x[4]>>x[5]>>volid>>syna;
466 if (j != i) AliError(Form("ch %d expected, %d found",i,j));
467 if (volid != GetVoi(i)) AliError(Form("ch %d volume id %d expected, %d found",i,GetVoi(i),volid));
468 std::string symnam = GetChName(i);
469 if (syna != symnam) AliError(Form("ch %d name %s expected, %s found",i,symnam.data(),syna.data()));
477 //_____________________________________________________________________________
478 void AliTRDalignment::ReadCurrentGeo()
481 // use currently loaded geometry to determine misalignment by comparing
482 // original and misaligned matrix of the last node
483 // Now, original, does not mean "ideal". It is the matrix before the alignment.
484 // So, if alignment was applied more than once, the numbers extracted will
485 // represent just the last alignment. -- check this!
488 TGeoHMatrix *ideSm[18]; // ideal
489 TGeoHMatrix *misSm[18]; // misaligned
490 for (int i = 0; i < 18; i++) {
492 // read misaligned and original matrices
494 TGeoPNEntry *pne = gGeoManager->GetAlignableEntry(GetSmName(i));
495 if (!pne) AliError(Form("no such physical node entry: %s",GetSmName(i)));
497 TGeoPhysicalNode *node = pne->GetPhysicalNode();
498 if (!node) AliError(Form("physical node entry %s has no physical node",GetSmName(i)));
500 misSm[i] = new TGeoHMatrix(*node->GetNode(node->GetLevel())->GetMatrix());
501 ideSm[i] = new TGeoHMatrix(*node->GetOriginalMatrix());
503 // calculate the local misalignment matrices as inverse misaligned times ideal
505 TGeoHMatrix mat(ideSm[i]->Inverse());
506 mat.Multiply(misSm[i]);
507 double *tra = mat.GetTranslation();
508 double *rot = mat.GetRotationMatrix();
513 if (TMath::Abs(rot[0])<1e-7 || TMath::Abs(rot[8])<1e-7) AliError("Failed to extract roll-pitch-yall angles!");
514 double raddeg = TMath::RadToDeg();
515 pars[3] = raddeg * TMath::ATan2(-rot[5],rot[8]);
516 pars[4] = raddeg * TMath::ASin(rot[2]);
517 pars[5] = raddeg * TMath::ATan2(-rot[1],rot[0]);
526 TGeoHMatrix *ideCh[540]; // ideal
527 TGeoHMatrix *misCh[540]; // misaligned
528 for (int i = 0; i < 540; i++) {
530 // read misaligned and original matrices
532 TGeoPNEntry *pne = gGeoManager->GetAlignableEntry(GetChName(i));
533 if (!pne) AliError(Form("no such physical node entry: %s",GetChName(i)));
535 TGeoPhysicalNode *node = pne->GetPhysicalNode();
536 if (!node) AliError(Form("physical node entry %s has no physical node",GetChName(i)));
538 misCh[i] = new TGeoHMatrix(*node->GetNode(node->GetLevel())->GetMatrix());
539 ideCh[i] = new TGeoHMatrix(*node->GetOriginalMatrix());
541 // calculate the local misalignment matrices as inverse misaligned times ideal
543 TGeoHMatrix mat(ideCh[i]->Inverse());
544 mat.Multiply(misCh[i]);
545 double *tra = mat.GetTranslation();
546 double *rot = mat.GetRotationMatrix();
551 if(TMath::Abs(rot[0])<1e-7 || TMath::Abs(rot[8])<1e-7) {
552 AliError("Failed to extract roll-pitch-yall angles!");
555 double raddeg = TMath::RadToDeg();
556 pars[3] = raddeg * TMath::ATan2(-rot[5],rot[8]);
557 pars[4] = raddeg * TMath::ASin(rot[2]);
558 pars[5] = raddeg * TMath::ATan2(-rot[1],rot[0]);
570 //_____________________________________________________________________________
571 void AliTRDalignment::ReadRoot(char *filename)
574 // read the alignment data from root file
577 TFile fi(filename,"READ");
580 TClonesArray *ar = (TClonesArray*) fi.Get("TRDAlignObjs");
584 else AliError(Form("cannot open input file %s",filename));
590 //_____________________________________________________________________________
591 void AliTRDalignment::ReadDB(char *filename)
594 // read the alignment data from database file
597 TFile fi(filename,"READ");
600 AliCDBEntry *e = (AliCDBEntry *) fi.Get("AliCDBEntry");
602 fComment.SetString(e->GetMetaData()->GetComment());
603 TClonesArray *ar = (TClonesArray *) e->GetObject();
607 else AliError(Form("cannot open input file %s",filename));
613 //_____________________________________________________________________________
614 void AliTRDalignment::ReadDB(char *db, char *path, int run
615 , int version, int subversion)
618 // read the alignment data from database
621 AliCDBManager *cdb = AliCDBManager::Instance();
622 AliCDBStorage *storLoc = cdb->GetStorage(db);
623 AliCDBEntry *e = storLoc->Get(path,run,version,subversion);
626 fComment.SetString(e->GetMetaData()->GetComment());
627 TClonesArray *ar = (TClonesArray *) e->GetObject();
632 //_____________________________________________________________________________
633 Bool_t AliTRDalignment::DecodeSurveyPointName(TString pna, Int_t &sm, Int_t &iz,
634 Int_t &ir, Int_t &iphi) {
635 // decode the survey point name and extract the sm, z, r and phi indices
637 if (pna(0,6)!="TRD_sm") {
638 AliError(Form("unexpected point name: %s",pna.Data()));
641 sm = atoi(pna(6,2).Data()); // supermodule number
643 if (pna(8) == 'a') iz=0; // anticlockwise, positive z
644 if (pna(8) == 'c') iz=1; // clockwise, negative z
646 if (pna(9) == 'l') ir=0; // low radius
647 if (pna(9) == 'h') ir=1; // high radius
648 iphi = atoi(pna(10,0).Data()); // phi within supermodule
649 if (sm>=0 && sm<18 && iz>=0 && iz<2 && ir>=0 && ir<2 && iphi>=0 && iphi<2) return kTRUE;
650 AliError(Form("cannot decode point name: %s",pna.Data()));
653 //_____________________________________________________________________________
654 void AliTRDalignment::ReadSurveyReport(char *filename)
657 // Read survey report and store the numbers in fSurveyX, fSurveyY, fSurveyZ,
658 // and fSurveyE. Store the survey info in the fComment.
659 // Each supermodule has 8 survey points. The point names look like
660 // TRD_sm08ah0 and have the following meaning.
662 // sm00..17 mean supermodule 0 through 17, following the phi.
663 // Supermodule 00 is between phi=0 and phi=20 degrees.
665 // a or c denotes the anticlockwise and clockwise end of the supermodule
666 // in z. Clockwise end is where z is negative and where the muon arm sits.
668 // l or h denote low radius and high radius holes
670 // 0 or 1 denote the hole at smaller and at larger phi, respectively.
673 // read the survey file
675 fstream in(filename,fstream::in);
677 AliError(Form("cannot open input file %s",filename));
681 // loop through the lines of the file until the beginning of data
683 TString title,date,subdetector,url,version,observations,system,units;
689 if (line.Contains("Title:")) title.ReadLine(in);
690 if (line.Contains("Date:")) date.ReadLine(in);
691 if (line.Contains("Subdetector:")) subdetector.ReadLine(in);
692 if (line.Contains("URL:")) url.ReadLine(in);
693 if (line.Contains("Version:")) version.ReadLine(in);
694 if (line.Contains("Observations:")) observations.ReadLine(in);
695 if (line.Contains("System:")) system.ReadLine(in);
696 if (line.Contains("Units:")) units.ReadLine(in);
697 if (line.Contains("Data:")) break;
700 // check what we found so far (watch out, they have \r at the end)
702 std::cout<<"title .........."<<title<<std::endl;
703 std::cout<<"date ..........."<<date<<std::endl;
704 std::cout<<"subdetector ...."<<subdetector<<std::endl;
705 std::cout<<"url ............"<<url<<std::endl;
706 std::cout<<"version ........"<<version<<std::endl;
707 std::cout<<"observations ..."<<observations<<std::endl;
708 std::cout<<"system ........."<<system<<std::endl;
709 std::cout<<"units .........."<<units<<std::endl;
711 if (!subdetector.Contains("TRD")) {
712 AliWarning(Form("Not a TRD survey file, subdetector = %s",subdetector.Data()));
715 double tocm = 0; // we want to have it in cm
716 if (units.Contains("mm")) tocm = 0.1;
717 else if (units.Contains("cm")) tocm = 1.0;
718 else if (units.Contains("m")) tocm = 100.0;
719 else if (units.Contains("pc")) tocm = 3.24078e-15;
721 AliError(Form("unexpected units: %s",units.Data()));
724 if (!system.Contains("ALICEPH")) {
725 AliError(Form("wrong system: %s, should be ALICEPH",system.Data()));
729 // scan the rest of the file which should contain list of surveyed points
730 // for every point, decode the point name and store the numbers in the right
731 // place in the arrays fSurveyX etc.
734 TString pna; // point name
736 double x,y,z,precision;
738 in >> pna >> x >> y >> z >> type >> target >> precision;
739 if (in.fail()) break;
741 if (DecodeSurveyPointName(pna,i,j,k,l)) {
742 fSurveyX[i][j][k][l] = tocm*x;
743 fSurveyY[i][j][k][l] = tocm*y;
744 fSurveyZ[i][j][k][l] = tocm*z;
745 fSurveyEX[i][j][k][l] = precision/10; // "precision" is supposed to be in mm
746 fSurveyEY[i][j][k][l] = precision/10; // "precision" is supposed to be in mm
747 fSurveyEZ[i][j][k][l] = precision/10; // "precision" is supposed to be in mm
748 // if, at some point, separate precision numbers for x,y,z show up in the
749 // survey reports the function will fail here
750 std::cout << "decoded "<<pna<<" "
751 <<fSurveyX[i][j][k][l]<<" "
752 <<fSurveyY[i][j][k][l]<<" "
753 <<fSurveyZ[i][j][k][l]<<" "
754 <<fSurveyEX[i][j][k][l]<<" "
755 <<fSurveyEY[i][j][k][l]<<" "
756 <<fSurveyEZ[i][j][k][l]<<" "<<std::endl;
757 } else AliError(Form("cannot decode point name: %s",pna.Data()));
760 TString info = "Survey "+title+" "+date+" "+url+" "+version+" "+observations;
761 info.ReplaceAll("\r","");
762 fComment.SetString(info.Data());
766 //_____________________________________________________________________________
767 void AliTRDalignment::ReadSurveyReport(AliSurveyObj *so)
770 // Read survey report and store the numbers in fSurveyX, fSurveyY, fSurveyZ,
771 // and fSurveyE. Store the survey info in the fComment.
772 // Each supermodule has 8 survey points. The point names look like
773 // TRD_sm08ah0 and have the following meaning.
775 // sm00..17 mean supermodule 0 through 17, following the phi.
776 // Supermodule 00 is between phi=0 and phi=20 degrees.
778 // a or c denotes the anticlockwise and clockwise end of the supermodule
779 // in z. Clockwise end is where z is negative and where the muon arm sits.
781 // l or h denote low radius and high radius holes
783 // 0 or 1 denote the hole at smaller and at larger phi, respectively.
786 // read and process the data from the survey object
788 Int_t size = so->GetEntries();
789 printf("-> %d\n", size);
791 TString title = so->GetReportTitle();
792 TString date = so->GetReportDate();
793 TString subdetector = so->GetDetector();
794 TString url = so->GetURL();
795 TString report = so->GetReportNumber();
796 TString version = so->GetReportVersion();
797 TString observations = so->GetObservations();
798 TString system = so->GetCoordSys();
799 TString units = so->GetUnits();
801 // check what we found so far (watch out, they have \r at the end)
803 std::cout<<"title .........."<<title<<std::endl;
804 std::cout<<"date ..........."<<date<<std::endl;
805 std::cout<<"subdetector ...."<<subdetector<<std::endl;
806 std::cout<<"url ............"<<url<<std::endl;
807 std::cout<<"version ........"<<version<<std::endl;
808 std::cout<<"observations ..."<<observations<<std::endl;
809 std::cout<<"system ........."<<system<<std::endl;
810 std::cout<<"units .........."<<units<<std::endl;
812 if (!subdetector.Contains("TRD")) {
813 AliWarning(Form("Not a TRD survey file, subdetector = %s",subdetector.Data()));
816 double tocm = 0; // we want to have it in cm
817 if (units.Contains("mm")) tocm = 0.1;
818 else if (units.Contains("cm")) tocm = 1.0;
819 else if (units.Contains("m")) tocm = 100.0;
820 else if (units.Contains("pc")) tocm = 3.24078e-15;
822 AliError(Form("unexpected units: %s",units.Data()));
825 if (!system.Contains("ALICEPH")) {
826 AliError(Form("wrong system: %s, should be ALICEPH",system.Data()));
830 // for every survey point, decode the point name and store the numbers in
831 // the right place in the arrays fSurveyX etc.
833 TObjArray *points = so->GetData();
834 for (int ip = 0; ip<points->GetEntries(); ++ip) {
835 AliSurveyPoint *po = (AliSurveyPoint *) points->At(ip);
836 TString pna = po->GetPointName();
838 if (DecodeSurveyPointName(pna,i,j,k,l)) {
839 fSurveyX[i][j][k][l] = tocm*po->GetX();
840 fSurveyY[i][j][k][l] = tocm*po->GetY();
841 fSurveyZ[i][j][k][l] = tocm*po->GetZ();
842 fSurveyEX[i][j][k][l] = po->GetPrecisionX()/10; // "precision" is supposed to be in mm
843 fSurveyEY[i][j][k][l] = po->GetPrecisionY()/10;
844 fSurveyEZ[i][j][k][l] = po->GetPrecisionZ()/10;
845 std::cout << "decoded "<<pna<<" "
846 <<fSurveyX[i][j][k][l]<<" "
847 <<fSurveyY[i][j][k][l]<<" "
848 <<fSurveyZ[i][j][k][l]<<" "
849 <<fSurveyEX[i][j][k][l]<<" "
850 <<fSurveyEY[i][j][k][l]<<" "
851 <<fSurveyEZ[i][j][k][l]<<" "<<std::endl;
852 } else AliError(Form("cannot decode point name: %s",pna.Data()));
855 TString info = "Survey "+title+" "+date+" "+url+" "+report+" "+version+" "+observations;
856 info.ReplaceAll("\r","");
857 fComment.SetString(info.Data());
860 //_____________________________________________________________________________
861 double AliTRDalignment::SurveyChi2(int i, double *a) {
864 // Compare the survey results to the ideal positions of the survey marks
865 // in the local frame of supermodule. When transforming, use the alignment
866 // parameters a[6]. Return chi-squared.
869 if (!IsGeoLoaded()) return 0;
870 printf("Survey of supermodule %d\n",i);
871 AliAlignObjParams al(GetSmName(i),0,a[0],a[1],a[2],a[3],a[4],a[5],0);
872 TGeoPNEntry *pne = gGeoManager->GetAlignableEntry(GetSmName(i));
873 if (!pne) AliError(Form("no such physical node entry: %s",GetSmName(i)));
874 TGeoPhysicalNode *node = pne->GetPhysicalNode();
875 if (!node) AliError(Form("physical node entry %s has no physical node",GetSmName(i)));
877 // al.ApplyToGeometry();
878 // node = pne->GetPhysicalNode(); // changed in the meantime
879 // TGeoHMatrix *ma = node->GetMatrix();
881 // a less destructive method (it does not modify geometry), gives the same result:
883 TGeoHMatrix *ma = new TGeoHMatrix();
884 al.GetLocalMatrix(*ma);
885 ma->MultiplyLeft(node->GetMatrix()); // global trafo, modified by a[]
888 printf(" sm z r phi x (lab phi) y (lab z) z (lab r) all in cm\n");
889 for (int j=0; j<2; j++) for (int k=0; k<2; k++) for (int l=0; l<2; l++) {
890 if (fSurveyEX[i][j][k][l] == 0.0
891 && fSurveyEY[i][j][k][l] == 0.0
892 && fSurveyEZ[i][j][k][l] == 0.0) continue; // no data for this survey point
893 double master[3] = {fSurveyX[i][j][k][l],fSurveyY[i][j][k][l],fSurveyZ[i][j][k][l]};
895 ma->MasterToLocal(master,local);
896 double dx = local[0]-fSurveyX0[j][k][l];
897 double dy = local[1]-fSurveyY0[j][k][l];
898 double dz = local[2]-fSurveyZ0[j][k][l];
899 chi2 += dx*dx/fSurveyEX[i][j][k][l]/fSurveyEX[i][j][k][l];
900 chi2 += dy*dy/fSurveyEY[i][j][k][l]/fSurveyEY[i][j][k][l];
901 chi2 += dz*dz/fSurveyEZ[i][j][k][l]/fSurveyEZ[i][j][k][l];
902 printf("local survey %3d %3d %3d %3d %12.3f %12.3f %12.3f\n",i,j,k,l,local[0],local[1],local[2]);
903 printf("local ideal %12.3f %12.3f %12.3f\n",fSurveyX0[j][k][l],
904 fSurveyY0[j][k][l],fSurveyZ0[j][k][l]);
905 printf("difference %12.3f %12.3f %12.3f\n",dx,dy,dz);
907 printf("chi2 = %.2f\n",chi2);
911 //_____________________________________________________________________________
912 void trdAlignmentFcn(int &npar, double *g, double &f, double *par, int iflag) {
915 // Standard function as needed by Minuit-like minimization procedures.
916 // For the set of parameters par calculates and returns chi-squared.
919 // smuggle a C++ object into a C function
920 AliTRDalignment *alignment = (AliTRDalignment*) gMinuit->GetObjectFit();
922 f = alignment->SurveyChi2(par);
925 if (g); // no warnings about unused stuff...
929 //_____________________________________________________________________________
930 void AliTRDalignment::SurveyToAlignment(int i,char *flag) {
933 // Find the supermodule alignment parameters needed to make the survey
934 // results coincide with the ideal positions of the survey marks.
935 // The string flag should look like "101000"; the six characters corresponds
936 // to the six alignment parameters and 0/1 mean that the parameter should
937 // be fixed/released in the fit.
939 if (strlen(flag)!=6) {
940 AliError(Form("unexpected flag: %s",flag));
944 printf("Finding alignment matrix for supermodule %d\n",i);
945 fIbuffer[0] = i; // store the sm number in the buffer so minuit can see it
948 gMinuit->SetObjectFit(this);
949 fitter.SetFCN(trdAlignmentFcn);
950 fitter.SetParameter(0,"dx",0,0.5,0,0);
951 fitter.SetParameter(1,"dy",0,0.5,0,0);
952 fitter.SetParameter(2,"dz",0,0.5,0,0);
953 fitter.SetParameter(3,"rx",0,0.1,0,0);
954 fitter.SetParameter(4,"ry",0,0.1,0,0);
955 fitter.SetParameter(5,"rz",0,0.1,0,0);
957 for (int j=0; j<6; j++) if (flag[j]=='0') fitter.FixParameter(j);
961 fitter.ExecuteCommand("SET PRINT", arglist, 1);
962 fitter.ExecuteCommand("SET ERR", arglist, 1);
964 //fitter.ExecuteCommand("SIMPLEX", arglist, 1);
965 fitter.ExecuteCommand("MINIMIZE", arglist, 1);
966 fitter.ExecuteCommand("CALL 3", arglist,0);
968 for (int j=0; j<6; j++) a[j] = fitter.GetParameter(j);
970 for (int j=0; j<6; j++) printf("%10.3f ",fitter.GetParameter(j));
972 for (int j=0; j<6; j++) printf("%10.3f ",fitter.GetParError(j));
977 //_____________________________________________________________________________
978 void AliTRDalignment::ReadAny(char *filename)
981 // read the alignment data from any kind of file
984 TString fist(filename);
985 if (fist.EndsWith(".txt")) ReadAscii(filename);
986 if (fist.EndsWith(".dat")) ReadAscii(filename);
987 if (fist.EndsWith(".root")) {
988 if (fist.Contains("Run")) ReadDB(filename);
989 else ReadRoot(filename);
994 //_____________________________________________________________________________
995 void AliTRDalignment::WriteAscii(char *filename) const
998 // store the alignment data on ascii file
1001 FILE *fp = fopen(filename, "w");
1003 AliError(Form("cannot open output file %s",filename));
1014 //_____________________________________________________________________________
1015 void AliTRDalignment::WriteRoot(char *filename)
1018 // store the alignment data on root file
1021 TClonesArray *ar = new TClonesArray("AliAlignObjParams",10000);
1023 TFile fo(filename,"RECREATE");
1026 fo.WriteObject(ar,"TRDAlignObjs","kSingleKey");
1029 else AliError(Form("cannot open output file %s",filename));
1035 //_____________________________________________________________________________
1036 void AliTRDalignment::WriteDB(char *filename, int run0, int run1)
1039 // dumping on a DB-like file
1042 TClonesArray *ar = new TClonesArray("AliAlignObjParams",10000);
1044 char *path = "TRD/Align/Data";
1045 AliCDBId id(path,run0,run1);
1046 AliCDBMetaData *md = new AliCDBMetaData();
1047 md->SetResponsible("Dariusz Miskowiec");
1048 md->SetComment(fComment.GetString().Data());
1049 AliCDBEntry *e = new AliCDBEntry(ar, id, md);
1050 TFile fi(filename,"RECREATE");
1055 else AliError(Form("cannot open input file %s",filename));
1065 //_____________________________________________________________________________
1066 void AliTRDalignment::WriteDB(char *db, char *path, int run0, int run1)
1069 // store the alignment data in database
1072 TClonesArray *ar = new TClonesArray("AliAlignObjParams",10000);
1074 AliCDBManager *cdb = AliCDBManager::Instance();
1075 AliCDBStorage *storLoc = cdb->GetStorage(db);
1076 AliCDBMetaData *md = new AliCDBMetaData();
1077 md->SetResponsible("Dariusz Miskowiec");
1078 md->SetComment(fComment.GetString().Data());
1079 AliCDBId id(path,run0,run1);
1080 storLoc->Put(ar,id,md);
1086 //_____________________________________________________________________________
1087 void AliTRDalignment::WriteGeo(char *filename)
1090 // apply misalignment to current geometry and store the
1091 // resulting geometry on a root file
1094 TClonesArray *ar = new TClonesArray("AliAlignObjParams",10000);
1097 gGeoManager->Export(filename);
1101 //_____________________________________________________________________________
1102 double AliTRDalignment::GetSmRMS(int xyz) const
1110 for (int i = 0; i < 18; i++) {
1112 s2 += fSm[i][xyz]*fSm[i][xyz];
1114 double rms2 = s2/18.0 - s1*s1/18.0/18.0;
1116 return rms2>0 ? sqrt(rms2) : 0.0;
1120 //_____________________________________________________________________________
1121 double AliTRDalignment::GetChRMS(int xyz) const
1129 for (int i = 0; i < 540; i++) {
1131 s2 += fCh[i][xyz]*fCh[i][xyz];
1133 double rms2 = s2/540.0 - s1*s1/540.0/540.0;
1135 return rms2>0 ? sqrt(rms2) : 0.0;
1139 //_____________________________________________________________________________
1140 void AliTRDalignment::PrintSmRMS() const
1146 printf(" %11.4f %11.4f %11.4f %11.5f %11.5f %11.5f supermodule rms\n"
1147 ,GetSmRMS(0),GetSmRMS(1),GetSmRMS(2),GetSmRMS(3),GetSmRMS(4),GetSmRMS(5));
1151 //_____________________________________________________________________________
1152 void AliTRDalignment::PrintChRMS() const
1158 printf(" %11.4f %11.4f %11.4f %11.5f %11.5f %11.5f chamber rms\n"
1159 ,GetChRMS(0),GetChRMS(1),GetChRMS(2),GetChRMS(3),GetChRMS(4),GetChRMS(5));
1163 //_____________________________________________________________________________
1164 void AliTRDalignment::ArToNumbers(TClonesArray *ar)
1167 // for each of the alignment objects in array ar extract the six local
1168 // alignment parameters; recognize by name to which supermodule or chamber
1169 // the alignment object pertains; set the respective fSm or fCh
1173 if (!IsGeoLoaded()) return;
1174 for (int i = 0; i < ar->GetEntries(); i++) {
1175 AliAlignObj *aao = (AliAlignObj *) ar->At(i);
1176 aao->ApplyToGeometry();
1183 //_____________________________________________________________________________
1184 void AliTRDalignment::NumbersToAr(TClonesArray *ar)
1187 // build array of AliAlignObj objects based on fSm and fCh data
1188 // at the same time, apply misalignment to the currently loaded geometry
1189 // it is important to apply misalignment of supermodules before creating
1190 // alignment objects for chambers
1193 if (!IsGeoLoaded()) return;
1194 TClonesArray &alobj = *ar;
1196 for (int i = 0; i < 18; i++) {
1197 new(alobj[nobj]) AliAlignObjParams(GetSmName(i)
1199 ,fSm[i][0],fSm[i][1],fSm[i][2]
1200 ,fSm[i][3],fSm[i][4],fSm[i][5]
1202 ((AliAlignObj *) alobj[nobj])->ApplyToGeometry();
1206 for (int i = 0; i < 540; i++) {
1207 new(alobj[nobj]) AliAlignObjParams(GetChName(i)
1209 ,fCh[i][0],fCh[i][1],fCh[i][2]
1210 ,fCh[i][3],fCh[i][4],fCh[i][5]
1212 ((AliAlignObj *) alobj[nobj])->ApplyToGeometry();
1215 AliInfo("current geometry modified");
1219 //_____________________________________________________________________________
1220 int AliTRDalignment::IsGeoLoaded()
1223 // check whether a geometry is loaded
1224 // issue a warning if geometry is not ideal
1228 if (gGeoManager->GetListOfPhysicalNodes()->GetEntries()) AliWarning("current geometry is not ideal");
1231 AliError("first load geometry by calling TGeoManager::Import(filename)");
1237 //_____________________________________________________________________________