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 // Class to make a internal alignemnt of TPC chambers //
21 // Different linear tranformation investigated
23 // 12 parameters - arbitrary linear transformation
24 // a00 a01 a02 a03 p[0] p[1] p[2] p[9]
25 // a10 a11 a12 a13 ==> p[3] p[4] p[5] p[10]
26 // a20 a21 a22 a23 p[6] p[7] p[8] p[11]
28 // 9 parameters - scaling fixed to 1
29 // a00 a01 a02 a03 1 p[0] p[1] p[6]
30 // a10 a11 a12 a13 ==> p[2] 1 p[3] p[7]
31 // a20 a21 a22 a23 p[4] p[5] 1 p[8]
33 // 6 parameters - x-y rotation x-z, y-z tiliting
34 // a00 a01 a02 a03 1 -p[0] 0 p[3]
35 // a10 a11 a12 a13 ==> p[0] 1 0 p[4]
36 // a20 a21 a22 a23 p[1] p[2] 1 p[5]
41 #include "TLinearFitter.h"
42 #include "AliTPCcalibAlign.h"
43 #include "AliExternalTrackParam.h"
44 #include "AliTPCTracklet.h"
47 #include "TTreeStream.h"
55 ClassImp(AliTPCcalibAlign)
57 AliTPCcalibAlign::AliTPCcalibAlign()
58 : fDphiHistArray(72*72),
59 fDthetaHistArray(72*72),
62 fFitterArray12(72*72),
69 for (Int_t i=0;i<72*72;++i) {
74 AliTPCcalibAlign::AliTPCcalibAlign(const Text_t *name, const Text_t *title)
76 fDphiHistArray(72*72),
77 fDthetaHistArray(72*72),
80 fFitterArray12(72*72),
89 for (Int_t i=0;i<72*72;++i) {
94 AliTPCcalibAlign::~AliTPCcalibAlign() {
100 void AliTPCcalibAlign::Process(AliTPCseed *seed) {
102 AliTPCTracklet::CreateTracklets(seed,AliTPCTracklet::kKalman,
104 // TObjArray trackletsL=
105 // AliTPCTracklet::CreateTracklets(seed,AliTPCTracklet::kLinear,
107 // TObjArray trackletsQ=
108 // AliTPCTracklet::CreateTracklets(seed,AliTPCTracklet::kQuadratic,
110 // TObjArray trackletsR=
111 // AliTPCTracklet::CreateTracklets(seed,AliTPCTracklet::kRiemann,
113 tracklets.SetOwner();
114 // trackletsL.SetOwner();
115 // trackletsQ.SetOwner();
116 // trackletsR.SetOwner();
117 if (tracklets.GetEntries()==2) {
118 AliTPCTracklet *t1=static_cast<AliTPCTracklet*>(tracklets[0]);
119 AliTPCTracklet *t2=static_cast<AliTPCTracklet*>(tracklets[1]);
120 if (t1->GetSector()>t2->GetSector()) {
121 AliTPCTracklet* tmp=t1;
125 AliExternalTrackParam *common1=0,*common2=0;
126 if (AliTPCTracklet::PropagateToMeanX(*t1,*t2,common1,common2))
127 ProcessTracklets(*common1,*common2,t1->GetSector(),t2->GetSector());
134 void AliTPCcalibAlign::Analyze(){
142 void AliTPCcalibAlign::Terminate(){
144 // Terminate function
145 // call base terminate + Eval of fitters
147 if (GetDebugLevel()>0) Info("AliTPCcalibAlign","Teminate");
149 AliTPCcalibBase::Terminate();
155 void AliTPCcalibAlign::ProcessTracklets(const AliExternalTrackParam &tp1,
156 const AliExternalTrackParam &tp2,
162 FillHisto(tp1,tp2,s1,s2);
164 // Process function to fill fitters
166 Double_t t1[5],t2[5];
167 Double_t &x1=t1[0], &y1=t1[1], &z1=t1[2], &dydx1=t1[3], &dzdx1=t1[4];
168 Double_t &x2=t2[0], &y2=t2[1], &z2=t2[2], &dydx2=t2[3], &dzdx2=t2[4];
172 Double_t snp1=tp1.GetSnp();
173 dydx1=snp1/TMath::Sqrt(1.-snp1*snp1);
174 Double_t tgl1=tp1.GetTgl();
175 // dz/dx = 1/(cos(theta)*cos(phi))
176 dzdx1=tgl1/TMath::Sqrt(1.-snp1*snp1);
180 Double_t snp2=tp2.GetSnp();
181 dydx2=snp2/TMath::Sqrt(1.-snp2*snp2);
182 Double_t tgl2=tp2.GetTgl();
183 dzdx2=tgl2/TMath::Sqrt(1.-snp2*snp2);
188 TTreeSRedirector *cstream = GetDebugStreamer();
190 static TVectorD vec1(5);
191 static TVectorD vec2(5);
192 vec1.SetElements(t1);
193 vec2.SetElements(t2);
194 AliExternalTrackParam *p1 = &((AliExternalTrackParam&)tp1);
195 AliExternalTrackParam *p2 = &((AliExternalTrackParam&)tp2);
196 (*cstream)<<"Tracklet"<<
206 Process12(t1,t2,GetOrMakeFitter12(s1,s2));
207 Process9(t1,t2,GetOrMakeFitter9(s1,s2));
208 Process6(t1,t2,GetOrMakeFitter6(s1,s2));
209 ++fPoints[GetIndex(s1,s2)];
212 void AliTPCcalibAlign::Process12(const Double_t *t1,
214 TLinearFitter *fitter) {
215 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
216 // y2 = a10*x1 + a11*y1 + a12*z1 + a13
217 // z2 = a20*x1 + a21*y1 + a22*z1 + a23
218 // dydx2 = (a10 + a11*dydx1 + a12*dzdx1)/(a00 + a01*dydx1 + a02*dzdx1)
219 // dzdx2 = (a20 + a21*dydx1 + a22*dzdx1)/(a00 + a01*dydx1 + a02*dzdx1)
221 // a00 a01 a02 a03 p[0] p[1] p[2] p[9]
222 // a10 a11 a12 a13 ==> p[3] p[4] p[5] p[10]
223 // a20 a21 a22 a23 p[6] p[7] p[8] p[11]
227 const Double_t &x1=t1[0], &y1=t1[1], &z1=t1[2], &dydx1=t1[3], &dzdx1=t1[4];
228 const Double_t /*&x2=t2[0],*/ &y2=t2[1], &z2=t2[2], &dydx2=t2[3], &dzdx2=t2[4];
233 Double_t sdydx = 0.001;
234 Double_t sdzdx = 0.001;
239 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
240 // y2 = a10*x1 + a11*y1 + a12*z1 + a13
241 // y2' = a10*x1 + a11*y1 + a12*z1 + a13 + (a01*y1 + a02*z1 + a03)*dydx2
242 for (Int_t i=0; i<12;i++) p[i]=0.;
247 p[0+1] = y1*dydx2; // a01
248 p[0+2] = z1*dydx2; // a02
249 p[9+0] = dydx2; // a03
251 fitter->AddPoint(p,value,sy);
253 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
254 // z2 = a20*x1 + a21*y1 + a22*z1 + a23
255 // z2' = a20*x1 + a21*y1 + a22*z1 + a23 + (a01*y1 + a02*z1 + a03)*dzdx2;
256 for (Int_t i=0; i<12;i++) p[i]=0.;
261 p[0+1] = y1*dzdx2; // a01
262 p[0+2] = z1*dzdx2; // a02
263 p[9+0] = dzdx2; // a03
265 fitter->AddPoint(p,value,sz);
267 // dydx2 = (a10 + a11*dydx1 + a12*dzdx1)/( a00 + a01*dydx1 + a02*dzdx1)
268 // (a10 + a11*dydx1 + a12*dzdx1) - (a00 + a01*dydx1 + a02*dzdx1)*dydx2 = 0
269 for (Int_t i=0; i<12;i++) p[i]=0.;
271 p[3+1] = dydx1; // a11
272 p[3+2] = dzdx1; // a12
273 p[0+0] = -dydx2; // a00
274 p[0+1] = -dydx1*dydx2; // a01
275 p[0+2] = -dzdx1*dydx2; // a02
277 fitter->AddPoint(p,value,sdydx);
279 // dzdx2 = (a20 + a21*dydx1 + a22*dzdx1)/( a00 + a01*dydx1 + a02*dzdx1)
280 // (a20 + a21*dydx1 + a22*dzdx1) - (a00 + a01*dydx1 + a02*dzdx1)*dzdx2 = 0
281 for (Int_t i=0; i<12;i++) p[i]=0.;
283 p[6+1] = dydx1; // a21
284 p[6+2] = dzdx1; // a22
285 p[0+0] = -dzdx2; // a00
286 p[0+1] = -dydx1*dzdx2; // a01
287 p[0+2] = -dzdx1*dzdx2; // a02
289 fitter->AddPoint(p,value,sdzdx);
292 void AliTPCcalibAlign::Process9(Double_t *t1,
294 TLinearFitter *fitter) {
295 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
296 // y2 = a10*x1 + a11*y1 + a12*z1 + a13
297 // z2 = a20*x1 + a21*y1 + a22*z1 + a23
298 // dydx2 = (a10 + a11*dydx1 + a12*dzdx1)/(a00 + a01*dydx1 + a02*dzdx1)
299 // dzdx2 = (a20 + a21*dydx1 + a22*dzdx1)/(a00 + a01*dydx1 + a02*dzdx1)
301 // a00 a01 a02 a03 1 p[0] p[1] p[6]
302 // a10 a11 a12 a13 ==> p[2] 1 p[3] p[7]
303 // a20 a21 a21 a23 p[4] p[5] 1 p[8]
306 Double_t &x1=t1[0], &y1=t1[1], &z1=t1[2], &dydx1=t1[3], &dzdx1=t1[4];
307 Double_t /*&x2=t2[0],*/ &y2=t2[1], &z2=t2[2], &dydx2=t2[3], &dzdx2=t2[4];
312 Double_t sdydx = 0.001;
313 Double_t sdzdx = 0.001;
318 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
319 // y2 = a10*x1 + a11*y1 + a12*z1 + a13
320 // y2' = a10*x1 + a11*y1 + a12*z1 + a13 + (a01*y1 + a02*z1 + a03)*dydx2
321 for (Int_t i=0; i<12;i++) p[i]=0.;
326 p[0] += y1*dydx2; // a01
327 p[1] += z1*dydx2; // a02
328 p[6] += dydx2; // a03
329 value = y2-y1; //-a11
330 fitter->AddPoint(p,value,sy);
332 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
333 // z2 = a20*x1 + a21*y1 + a22*z1 + a23
334 // z2' = a20*x1 + a21*y1 + a22*z1 + a23 + (a01*y1 + a02*z1 + a03)*dzdx2;
335 for (Int_t i=0; i<12;i++) p[i]=0.;
340 p[0] += y1*dzdx2; // a01
341 p[1] += z1*dzdx2; // a02
342 p[6] += dzdx2; // a03
343 value = z2-z1; //-a22
344 fitter->AddPoint(p,value,sz);
346 // dydx2 = (a10 + a11*dydx1 + a12*dzdx1)/( a00 + a01*dydx1 + a02*dzdx1)
347 // (a10 + a11*dydx1 + a12*dzdx1) - (a00 + a01*dydx1 + a02*dzdx1)*dydx2 = 0
348 for (Int_t i=0; i<12;i++) p[i]=0.;
350 //p[] += dydx1; // a11
351 p[3] += dzdx1; // a12
352 //p[] += -dydx2; // a00
353 p[0] += -dydx1*dydx2; // a01
354 p[1] += -dzdx1*dydx2; // a02
355 value = -dydx1+dydx2; // -a11 + a00
356 fitter->AddPoint(p,value,sdydx);
358 // dzdx2 = (a20 + a21*dydx1 + a22*dzdx1)/( a00 + a01*dydx1 + a02*dzdx1)
359 // (a20 + a21*dydx1 + a22*dzdx1) - (a00 + a01*dydx1 + a02*dzdx1)*dzdx2 = 0
360 for (Int_t i=0; i<12;i++) p[i]=0.;
362 p[5] += dydx1; // a21
363 //p[] += dzdx1; // a22
364 //p[] += -dzdx2; // a00
365 p[0] += -dydx1*dzdx2; // a01
366 p[1] += -dzdx1*dzdx2; // a02
367 value = -dzdx1+dzdx2; // -a22 + a00
368 fitter->AddPoint(p,value,sdzdx);
371 void AliTPCcalibAlign::Process6(Double_t *t1,
373 TLinearFitter *fitter) {
374 // x2 = 1 *x1 +-a01*y1 + 0 +a03
375 // y2 = a01*x1 + 1 *y1 + 0 +a13
376 // z2 = a20*x1 + a21*y1 + 1 *z1 +a23
377 // dydx2 = (a10 + a11*dydx1 + a12*dzdx1)/(a00 + a01*dydx1 + a02*dzdx1)
378 // dzdx2 = (a20 + a21*dydx1 + a22*dzdx1)/(a00 + a01*dydx1 + a02*dzdx1)
380 // a00 a01 a02 a03 1 -p[0] 0 p[3]
381 // a10 a11 a12 a13 ==> p[0] 1 0 p[4]
382 // a20 a21 a21 a23 p[1] p[2] 1 p[5]
384 Double_t &x1=t1[0], &y1=t1[1], &z1=t1[2], &dydx1=t1[3], &dzdx1=t1[4];
385 Double_t /*&x2=t2[0],*/ &y2=t2[1], &z2=t2[2], &dydx2=t2[3], &dzdx2=t2[4];
390 Double_t sdydx = 0.001;
391 Double_t sdzdx = 0.001;
395 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
396 // y2 = a10*x1 + a11*y1 + a12*z1 + a13
397 // y2' = a10*x1 + a11*y1 + a12*z1 + a13 + (a01*y1 + a02*z1 + a03)*dydx2
398 for (Int_t i=0; i<12;i++) p[i]=0.;
403 p[0] += -y1*dydx2; // a01
404 //p[] += z1*dydx2; // a02
405 p[3] += dydx2; // a03
406 value = y2-y1; //-a11
407 fitter->AddPoint(p,value,sy);
409 // x2 = a00*x1 + a01*y1 + a02*z1 + a03
410 // z2 = a20*x1 + a21*y1 + a22*z1 + a23
411 // z2' = a20*x1 + a21*y1 + a22*z1 + a23 + (a01*y1 + a02*z1 + a03)*dzdx2;
412 for (Int_t i=0; i<12;i++) p[i]=0.;
417 p[0] += -y1*dzdx2; // a01
418 //p[] += z1*dzdx2; // a02
419 p[3] += dzdx2; // a03
420 value = z2-z1; //-a22
421 fitter->AddPoint(p,value,sz);
423 // dydx2 = (a10 + a11*dydx1 + a12*dzdx1)/( a00 + a01*dydx1 + a02*dzdx1)
424 // (a10 + a11*dydx1 + a12*dzdx1) - (a00 + a01*dydx1 + a02*dzdx1)*dydx2 = 0
425 for (Int_t i=0; i<12;i++) p[i]=0.;
427 //p[] += dydx1; // a11
428 //p[] += dzdx1; // a12
429 //p[] += -dydx2; // a00
430 p[0] += dydx1*dydx2; // a01
431 //p[] += -dzdx1*dydx2; // a02
432 value = -dydx1+dydx2; // -a11 + a00
433 fitter->AddPoint(p,value,sdydx);
435 // dzdx2 = (a20 + a21*dydx1 + a22*dzdx1)/( a00 + a01*dydx1 + a02*dzdx1)
436 // (a20 + a21*dydx1 + a22*dzdx1) - (a00 + a01*dydx1 + a02*dzdx1)*dzdx2 = 0
437 for (Int_t i=0; i<12;i++) p[i]=0.;
439 p[2] += dydx1; // a21
440 //p[] += dzdx1; // a22
441 //p[] += -dzdx2; // a00
442 p[0] += dydx1*dzdx2; // a01
443 //p[] += -dzdx1*dzdx2; // a02
444 value = -dzdx1+dzdx2; // -a22 + a00
445 fitter->AddPoint(p,value,sdzdx);
451 void AliTPCcalibAlign::EvalFitters() {
455 // Perform the fitting using linear fitters
457 Int_t kMinPoints =50;
459 TFile fff("alignDebug.root","recreate");
460 for (Int_t s1=0;s1<72;++s1)
461 for (Int_t s2=0;s2<72;++s2){
462 if ((f=GetFitter12(s1,s2))&&fPoints[GetIndex(s1,s2)]>kMinPoints) {
463 // cerr<<s1<<","<<s2<<": "<<fPoints[GetIndex(s1,s2)]<<endl;
465 cerr<<"Evaluation failed for "<<s1<<","<<s2<<endl;
466 f->Write(Form("f12_%d_%d",s1,s2));
468 f->Write(Form("f12_%d_%d",s1,s2));
471 if ((f=GetFitter9(s1,s2))&&fPoints[GetIndex(s1,s2)]>kMinPoints) {
472 // cerr<<s1<<","<<s2<<": "<<fPoints[GetIndex(s1,s2)]<<endl;
474 cerr<<"Evaluation failed for "<<s1<<","<<s2<<endl;
476 f->Write(Form("f9_%d_%d",s1,s2));
479 if ((f=GetFitter6(s1,s2))&&fPoints[GetIndex(s1,s2)]>kMinPoints) {
480 // cerr<<s1<<","<<s2<<": "<<fPoints[GetIndex(s1,s2)]<<endl;
482 cerr<<"Evaluation failed for "<<s1<<","<<s2<<endl;
484 f->Write(Form("f6_%d_%d",s1,s2));
488 this->Write("align");
493 chi212 = align->GetChisquare()/(4.*entries);
497 align->GetParameters(par);
498 align->GetCovarianceMatrix(mat);
502 for (Int_t i=0; i<12;i++){
503 palign12(i)= par(i+1);
504 for (Int_t j=0; j<12;j++){
505 pcovar12(i,j) = mat(i+1,j+1);
506 pcovar12(i,j) *= chi212;
510 for (Int_t i=0; i<12;i++){
511 psigma12(i) = TMath::Sqrt(pcovar12(i,i));
512 palignR12(i) = palign12(i)/TMath::Sqrt(pcovar12(i,i));
513 for (Int_t j=0; j<12;j++){
514 pcovarN12(i,j) = pcovar12(i,j)/TMath::Sqrt(pcovar12(i,i)*pcovar12(j,j));
520 TLinearFitter* AliTPCcalibAlign::GetOrMakeFitter12(Int_t s1,Int_t s2) {
522 // get or make fitter - general linear transformation
524 static Int_t counter12=0;
525 static TF1 f12("f12","x[0]++x[1]++x[2]++x[3]++x[4]++x[5]++x[6]++x[7]++x[8]++x[9]++x[10]++x[11]");
526 TLinearFitter * fitter = GetFitter12(s1,s2);
527 if (fitter) return fitter;
528 // fitter =new TLinearFitter(12,"x[0]++x[1]++x[2]++x[3]++x[4]++x[5]++x[6]++x[7]++x[8]++x[9]++x[10]++x[11]");
529 fitter =new TLinearFitter(&f12,"");
530 fitter->StoreData(kFALSE);
531 fFitterArray12.AddAt(fitter,GetIndex(s1,s2));
533 if (GetDebugLevel()>0) cerr<<"Creating fitter12 "<<s1<<","<<s2<<" : "<<counter12<<endl;
537 TLinearFitter* AliTPCcalibAlign::GetOrMakeFitter9(Int_t s1,Int_t s2) {
539 //get or make fitter - general linear transformation - no scaling
541 static Int_t counter9=0;
542 static TF1 f9("f9","x[0]++x[1]++x[2]++x[3]++x[4]++x[5]++x[6]++x[7]++x[8]");
543 TLinearFitter * fitter = GetFitter9(s1,s2);
544 if (fitter) return fitter;
545 // fitter =new TLinearFitter(9,"x[0]++x[1]++x[2]++x[3]++x[4]++x[5]++x[6]++x[7]++x[8]");
546 fitter =new TLinearFitter(&f9,"");
547 fitter->StoreData(kFALSE);
548 fFitterArray9.AddAt(fitter,GetIndex(s1,s2));
550 if (GetDebugLevel()>0) cerr<<"Creating fitter12 "<<s1<<","<<s2<<" : "<<counter9<<endl;
554 TLinearFitter* AliTPCcalibAlign::GetOrMakeFitter6(Int_t s1,Int_t s2) {
556 // get or make fitter - 6 paramater linear tranformation
559 // - tilting x-z, y-z
560 static Int_t counter6=0;
561 static TF1 f6("f6","x[0]++x[1]++x[2]++x[3]++x[4]++x[5]");
562 TLinearFitter * fitter = GetFitter6(s1,s2);
563 if (fitter) return fitter;
564 // fitter=new TLinearFitter(6,"x[0]++x[1]++x[2]++x[3]++x[4]++x[5]");
565 fitter=new TLinearFitter(&f6,"");
566 fitter->StoreData(kFALSE);
567 fFitterArray6.AddAt(fitter,GetIndex(s1,s2));
569 if (GetDebugLevel()>0) cerr<<"Creating fitter6 "<<s1<<","<<s2<<" : "<<counter6<<endl;
577 Bool_t AliTPCcalibAlign::GetTransformation12(Int_t s1,Int_t s2,TMatrixD &a) {
579 // GetTransformation matrix - 12 paramaters - generael linear transformation
581 if (!GetFitter12(s1,s2))
585 GetFitter12(s1,s2)->GetParameters(p);
587 a[0][0]=p[0]; a[0][1]=p[1]; a[0][2]=p[2]; a[0][3]=p[9];
588 a[1][0]=p[3]; a[1][1]=p[4]; a[1][2]=p[5]; a[1][3]=p[10];
589 a[2][0]=p[6]; a[2][1]=p[7]; a[2][2]=p[8]; a[2][3]=p[11];
590 a[3][0]=0.; a[3][1]=0.; a[3][2]=0.; a[3][3]=1.;
595 Bool_t AliTPCcalibAlign::GetTransformation9(Int_t s1,Int_t s2,TMatrixD &a) {
597 // GetTransformation matrix - 9 paramaters - general linear transformation
600 if (!GetFitter9(s1,s2))
604 GetFitter9(s1,s2)->GetParameters(p);
606 a[0][0]=1; a[0][1]=p[0]; a[0][2]=p[1]; a[0][3]=p[6];
607 a[1][0]=p[2]; a[1][1]=1; a[1][2]=p[3]; a[1][3]=p[7];
608 a[2][0]=p[4]; a[2][1]=p[5]; a[2][2]=1; a[2][3]=p[8];
609 a[3][0]=0.; a[3][1]=0.; a[3][2]=0.; a[3][3]=1.;
614 Bool_t AliTPCcalibAlign::GetTransformation6(Int_t s1,Int_t s2,TMatrixD &a) {
616 // GetTransformation matrix - 6 paramaters
620 if (!GetFitter6(s1,s2))
624 GetFitter6(s1,s2)->GetParameters(p);
626 a[0][0]=1; a[0][1]=-p[0];a[0][2]=0; a[0][3]=p[3];
627 a[1][0]=p[0]; a[1][1]=1; a[1][2]=0; a[1][3]=p[4];
628 a[2][0]=p[1]; a[2][1]=p[2]; a[2][2]=1; a[2][3]=p[5];
629 a[3][0]=0.; a[3][1]=0.; a[3][2]=0.; a[3][3]=1.;
634 void AliTPCcalibAlign::FillHisto(const AliExternalTrackParam &tp1,
635 const AliExternalTrackParam &tp2,
638 // Fill residual histograms
640 if (s2-s1==36) {//only inner-outer
641 GetHisto(kPhi,s1,s2,kTRUE)->Fill(TMath::ASin(tp1.GetSnp())-TMath::ASin(tp2.GetSnp()));
642 GetHisto(kTheta,s1,s2,kTRUE)->Fill(TMath::ATan(tp1.GetTgl())-TMath::ATan(tp2.GetTgl()));
643 GetHisto(kY,s1,s2,kTRUE)->Fill(tp1.GetY()-tp2.GetY());
644 GetHisto(kZ,s1,s2,kTRUE)->Fill(tp1.GetZ()-tp2.GetZ());
650 TH1 * AliTPCcalibAlign::GetHisto(HistoType type, Int_t s1, Int_t s2, Bool_t force)
653 // return specified residual histogram - it is only QA
654 // if force specified the histogram and given histogram is not existing
655 // new histogram is created
657 if (GetIndex(s1,s2)>=72*72) return 0;
658 TObjArray *histoArray=0;
661 histoArray = &fDyHistArray; break;
663 histoArray = &fDzHistArray; break;
665 histoArray = &fDphiHistArray; break;
667 histoArray = &fDthetaHistArray; break;
669 TH1 * histo= (TH1*)histoArray->At(GetIndex(s1,s2));
670 if (histo) return histo;
671 if (force==kFALSE) return 0;
677 name<<"hist_y_"<<s1<<"_"<<s2;
678 title<<"Y Missalignment for sectors "<<s1<<" and "<<s2;
679 histo =new TH1D(name.str().c_str(),title.str().c_str(),512,-0.3,0.3); // +/- 3 mm
682 name<<"hist_z_"<<s1<<"_"<<s2;
683 title<<"Z Missalignment for sectors "<<s1<<" and "<<s2;
684 histo = new TH1D(name.str().c_str(),title.str().c_str(),512,-0.3,0.3); // +/- 3 mm
687 name<<"hist_phi_"<<s1<<"_"<<s2;
688 title<<"Phi Missalignment for sectors "<<s1<<" and "<<s2;
689 histo =new TH1D(name.str().c_str(),title.str().c_str(),512,-0.01,0.01); // +/- 10 mrad
692 name<<"hist_theta_"<<s1<<"_"<<s2;
693 title<<"Theta Missalignment for sectors "<<s1<<" and "<<s2;
694 histo =new TH1D(name.str().c_str(),title.str().c_str(),512,-0.01,0.01); // +/- 10 mrad
697 histo->SetDirectory(0);
698 histoArray->AddAt(histo,GetIndex(s1,s2));