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Coding conventions correction.
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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// Class AliMUONClusterFinderVS
20// -------------------------------
21// Class for clustering and reconstruction of space points
22// (Not used by default)
23
24#include "AliMUONClusterFinderVS.h"
25#include "AliMUONDigit.h"
26#include "AliMUONRawCluster.h"
27#include "AliMUONGeometrySegmentation.h"
28#include "AliMUONMathieson.h"
29#include "AliMUONClusterInput.h"
30#include "AliMUONDigitMapA1.h"
31
32#include "AliLog.h"
33
34#include <TMinuit.h>
35#include <TF1.h>
36#include <TMinuit.h>
37#include <Riostream.h>
38
39
40//_____________________________________________________________________
41// This function is minimized in the double-Mathieson fit
42void fcnS2(Int_t &npar, Double_t *gin, Double_t &f, Double_t *par, Int_t iflag);
43void fcnS1(Int_t &npar, Double_t *gin, Double_t &f, Double_t *par, Int_t iflag);
44void fcnCombiS1(Int_t &npar, Double_t *gin, Double_t &f, Double_t *par, Int_t iflag);
45void fcnCombiS2(Int_t &npar, Double_t *gin, Double_t &f, Double_t *par, Int_t iflag);
46
47/// \cond CLASSIMP
48ClassImp(AliMUONClusterFinderVS)
49/// \endcond
50
51AliMUONClusterFinderVS::AliMUONClusterFinderVS()
52 : TObject(),
53 fInput(AliMUONClusterInput::Instance()),
54 fDeclusterFlag(0),
55 fClusterSize(0),
56 fNperMax(0),
57 fGhostChi2Cut(1e6),
58 fNPeaks(0),
59 fNRawClusters(0),
60 fRawClusters(0x0),
61 fZPlane(0.),
62 fSector(0),
63 fFitStat(0),
64 fEvtNumber(0)
65{
66/// Default constructor
67 fDigitMap[0] = 0;
68 fDigitMap[1] = 0;
69 fTrack[0]=fTrack[1]=-1;
70 fSeg2[0] = 0;
71 fSeg2[1] = 0;
72
73 for(Int_t i=0; i<100; i++) {
74 for (Int_t j=0; j<2; j++) {
75 fDig[i][j] = 0;
76 }
77 }
78 fRawClusters = new TClonesArray("AliMUONRawCluster",1000);
79}
80 //____________________________________________________________________________
81AliMUONClusterFinderVS::~AliMUONClusterFinderVS()
82{
83/// Destructor
84
85 // Reset tracks information
86 fNRawClusters = 0;
87 if (fRawClusters) {
88 fRawClusters->Delete();
89 delete fRawClusters;
90 }
91}
92
93//____________________________________________________________________________
94void AliMUONClusterFinderVS::ResetRawClusters()
95{
96/// Reset tracks information
97 fNRawClusters = 0;
98 if (fRawClusters) fRawClusters->Clear();
99}
100//____________________________________________________________________________
101void AliMUONClusterFinderVS::Decluster(AliMUONRawCluster *cluster)
102{
103/// Decluster by local maxima
104 SplitByLocalMaxima(cluster);
105}
106//____________________________________________________________________________
107void AliMUONClusterFinderVS::SplitByLocalMaxima(AliMUONRawCluster *c)
108{
109/// Split complex cluster by local maxima
110 Int_t cath, i;
111
112 fInput->SetCluster(c);
113
114 fMul[0]=c->GetMultiplicity(0);
115 fMul[1]=c->GetMultiplicity(1);
116
117//
118// dump digit information into arrays
119//
120
121 Float_t qtot;
122
123 for (cath=0; cath<2; cath++) {
124 qtot=0;
125
126 for (i=0; i<fMul[cath]; i++) {
127 // pointer to digit
128 fDig[i][cath]=fInput->Digit(cath, c->GetIndex(i, cath));
129 // pad coordinates
130 fIx[i][cath]= fDig[i][cath]->PadX();
131 fIy[i][cath]= fDig[i][cath]->PadY();
132 // pad charge
133 fQ[i][cath] = fDig[i][cath]->Signal();
134 // pad centre coordinates
135 fSeg2[cath]->
136 GetPadC(fInput->DetElemId(), fIx[i][cath], fIy[i][cath], fX[i][cath], fY[i][cath], fZ[i][cath]);
137 } // loop over cluster digits
138
139 } // loop over cathodes
140
141
142 FindLocalMaxima(c);
143
144//
145// Initialise and perform mathieson fits
146 Float_t chi2, oldchi2;
147// ++++++++++++++++++*************+++++++++++++++++++++
148// (1) No more than one local maximum per cathode plane
149// +++++++++++++++++++++++++++++++*************++++++++
150 if ((fNLocal[0]==1 && (fNLocal[1]==0 || fNLocal[1]==1)) ||
151 (fNLocal[0]==0 && fNLocal[1]==1)) {
152// Perform combined single Mathieson fit
153// Initial values for coordinates (x,y)
154
155 // One local maximum on cathodes 1 and 2 (X->cathode 2, Y->cathode 1)
156 if (fNLocal[0]==1 && fNLocal[1]==1) {
157 fXInit[0]=c->GetX(1);
158 fYInit[0]=c->GetY(0);
159 // One local maximum on cathode 1 (X,Y->cathode 1)
160 } else if (fNLocal[0]==1) {
161 fXInit[0]=c->GetX(0);
162 fYInit[0]=c->GetY(0);
163 // One local maximum on cathode 2 (X,Y->cathode 2)
164 } else {
165 fXInit[0]=c->GetX(1);
166 fYInit[0]=c->GetY(1);
167 }
168 AliDebug(1,"cas (1) CombiSingleMathiesonFit(c)");
169 chi2=CombiSingleMathiesonFit(c);
170// Int_t ndf = fgNbins[0]+fgNbins[1]-2;
171// Float_t prob = TMath::Prob(Double_t(chi2),ndf);
172// prob1->Fill(prob);
173// chi2_1->Fill(chi2);
174 oldchi2=chi2;
175 AliDebug(1,Form(" chi2 %f ",chi2));
176
177 c->SetX(0, fXFit[0]);
178 c->SetY(0, fYFit[0]);
179
180 c->SetX(1,fXFit[0]);
181 c->SetY(1,fYFit[0]);
182 c->SetChi2(0,chi2);
183 c->SetChi2(1,chi2);
184 // Force on anod
185
186 c->SetX(0, fSeg2[0]->GetAnod(fInput->DetElemId(), c->GetX(0)));
187 c->SetX(1, fSeg2[1]->GetAnod(fInput->DetElemId(), c->GetX(1)));
188
189 // c->SetDetElemId(fInput->DetElemId());
190 // If reasonable chi^2 add result to the list of rawclusters
191 if (chi2 < 0.3) {
192 AddRawCluster(*c);
193 // If not try combined double Mathieson Fit
194 } else {
195 AliDebug(1," MAUVAIS CHI2 !!!\n");
196 if (fNLocal[0]==1 && fNLocal[1]==1) {
197 fXInit[0]=fX[fIndLocal[0][1]][1];
198 fYInit[0]=fY[fIndLocal[0][0]][0];
199 fXInit[1]=fX[fIndLocal[0][1]][1];
200 fYInit[1]=fY[fIndLocal[0][0]][0];
201 } else if (fNLocal[0]==1) {
202 fXInit[0]=fX[fIndLocal[0][0]][0];
203 fYInit[0]=fY[fIndLocal[0][0]][0];
204 fXInit[1]=fX[fIndLocal[0][0]][0];
205 fYInit[1]=fY[fIndLocal[0][0]][0];
206 } else {
207 fXInit[0]=fX[fIndLocal[0][1]][1];
208 fYInit[0]=fY[fIndLocal[0][1]][1];
209 fXInit[1]=fX[fIndLocal[0][1]][1];
210 fYInit[1]=fY[fIndLocal[0][1]][1];
211 }
212
213// Initial value for charge ratios
214 fQrInit[0]=0.5;
215 fQrInit[1]=0.5;
216 AliDebug(1,"\n cas (1) CombiDoubleMathiesonFit(c)\n");
217 chi2=CombiDoubleMathiesonFit(c);
218// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
219// Float_t prob = TMath::Prob(chi2,ndf);
220// prob2->Fill(prob);
221// chi2_2->Fill(chi2);
222
223// Was this any better ??
224 AliDebug(1,Form(" Old and new chi2 %f %f ", oldchi2, chi2));
225 if (fFitStat!=0 && chi2>0 && (2.*chi2 < oldchi2)) {
226 AliDebug(1,"Split");
227 // Split cluster into two according to fit result
228 Split(c);
229 } else {
230 AliDebug(1,"Do not Split");
231 // Don't split
232 AddRawCluster(*c);
233 }
234 }
235
236// +++++++++++++++++++++++++++++++++++++++
237// (2) Two local maxima per cathode plane
238// +++++++++++++++++++++++++++++++++++++++
239 } else if (fNLocal[0]==2 && fNLocal[1]==2) {
240//
241// Let's look for ghosts first
242
243 Float_t xm[4][2], ym[4][2];
244 Float_t dpx, dpy, dx, dy;
245 Int_t ixm[4][2], iym[4][2];
246 Int_t isec, im1, im2, ico;
247//
248// Form the 2x2 combinations
249// 0-0, 0-1, 1-0, 1-1
250 ico=0;
251 for (im1=0; im1<2; im1++) {
252 for (im2=0; im2<2; im2++) {
253 xm[ico][0]=fX[fIndLocal[im1][0]][0];
254 ym[ico][0]=fY[fIndLocal[im1][0]][0];
255 xm[ico][1]=fX[fIndLocal[im2][1]][1];
256 ym[ico][1]=fY[fIndLocal[im2][1]][1];
257
258 ixm[ico][0]=fIx[fIndLocal[im1][0]][0];
259 iym[ico][0]=fIy[fIndLocal[im1][0]][0];
260 ixm[ico][1]=fIx[fIndLocal[im2][1]][1];
261 iym[ico][1]=fIy[fIndLocal[im2][1]][1];
262 ico++;
263 }
264 }
265// ico = 0 : first local maximum on cathodes 1 and 2
266// ico = 1 : fisrt local maximum on cathode 1 and second on cathode 2
267// ico = 2 : second local maximum on cathode 1 and first on cathode 1
268// ico = 3 : second local maximum on cathodes 1 and 2
269
270// Analyse the combinations and keep those that are possible !
271// For each combination check consistency in x and y
272 Int_t iacc;
273 Bool_t accepted[4];
274 Float_t dr[4] = {1.e4, 1.e4, 1.e4, 1.e4};
275 iacc=0;
276
277// In case of staggering maxima are displaced by exactly half the pad-size in y.
278// We have to take into account the numerical precision in the consistency check;
279 Float_t eps = 1.e-5;
280//
281 for (ico=0; ico<4; ico++) {
282 accepted[ico]=kFALSE;
283// cathode one: x-coordinate
284 isec=fSeg2[0]->Sector(fInput->DetElemId(), ixm[ico][0], iym[ico][0]);
285 dpx=fSeg2[0]->Dpx(fInput->DetElemId(), isec)/2.;
286
287 dx=TMath::Abs(xm[ico][0]-xm[ico][1]);
288// cathode two: y-coordinate
289
290 isec=fSeg2[1]->Sector(fInput->DetElemId(), ixm[ico][1], iym[ico][1]);
291 dpy=fSeg2[1]->Dpy(fInput->DetElemId(), isec)/2.;
292
293 dy=TMath::Abs(ym[ico][0]-ym[ico][1]);
294 AliDebug(2,Form("\n %i %f %f %f %f %f %f \n", ico, ym[ico][0], ym[ico][1], dy, dpy, dx, dpx ));
295 if ((dx <= dpx) && (dy <= dpy+eps)) {
296 // consistent
297 accepted[ico]=kTRUE;
298 dr[ico] = TMath::Sqrt(dx*dx+dy*dy);
299 iacc++;
300 } else {
301 // reject
302 accepted[ico]=kFALSE;
303 }
304 }
305 AliDebug(1,Form("\n iacc= %d:\n", iacc));
306 if (iacc == 3) {
307 if (accepted[0] && accepted[1]) {
308 if (dr[0] >= dr[1]) {
309 accepted[0]=kFALSE;
310 } else {
311 accepted[1]=kFALSE;
312 }
313 }
314
315 if (accepted[2] && accepted[3]) {
316 if (dr[2] >= dr[3]) {
317 accepted[2]=kFALSE;
318 } else {
319 accepted[3]=kFALSE;
320 }
321 }
322/*
323// eliminate one candidate
324 Float_t drmax = 0;
325 Int_t icobad = -1;
326
327 for (ico=0; ico<4; ico++) {
328 if (accepted[ico] && dr[ico] > drmax) {
329 icobad = ico;
330 drmax = dr[ico];
331 }
332 }
333
334 accepted[icobad] = kFALSE;
335*/
336 iacc = 2;
337 }
338
339
340 AliDebug(1,Form("\n iacc= %d:\n", iacc));
341 if (iacc==2) {
342 AliDebug(1,"\n iacc=2: No problem ! \n");
343 } else if (iacc==4) {
344 AliDebug(1,"\n iacc=4: Ok, but ghost problem !!! \n");
345 } else if (iacc==0) {
346 AliDebug(1,"\n iacc=0: I don't know what to do with this !!!!!!!!! \n");
347 }
348
349// Initial value for charge ratios
350 fQrInit[0]=Float_t(fQ[fIndLocal[0][0]][0])/
351 Float_t(fQ[fIndLocal[0][0]][0]+fQ[fIndLocal[1][0]][0]);
352 fQrInit[1]=Float_t(fQ[fIndLocal[0][1]][1])/
353 Float_t(fQ[fIndLocal[0][1]][1]+fQ[fIndLocal[1][1]][1]);
354
355// ******* iacc = 0 *******
356// No combinations found between the 2 cathodes
357// We keep the center of gravity of the cluster
358 if (iacc==0) {
359 AddRawCluster(*c);
360 }
361
362// ******* iacc = 1 *******
363// Only one combination found between the 2 cathodes
364 if (iacc==1) {
365// Initial values for the 2 maxima (x,y)
366
367// 1 maximum is initialised with the maximum of the combination found (X->cathode 2, Y->cathode 1)
368// 1 maximum is initialised with the other maximum of the first cathode
369 if (accepted[0]){
370 AliDebug(1,"ico=0");
371 fXInit[0]=xm[0][1];
372 fYInit[0]=ym[0][0];
373 fXInit[1]=xm[3][0];
374 fYInit[1]=ym[3][0];
375 } else if (accepted[1]){
376 AliDebug(1,"ico=1");
377 fXInit[0]=xm[1][1];
378 fYInit[0]=ym[1][0];
379 fXInit[1]=xm[2][0];
380 fYInit[1]=ym[2][0];
381 } else if (accepted[2]){
382 AliDebug(1,"ico=2");
383 fXInit[0]=xm[2][1];
384 fYInit[0]=ym[2][0];
385 fXInit[1]=xm[1][0];
386 fYInit[1]=ym[1][0];
387 } else if (accepted[3]){
388 AliDebug(1,"ico=3");
389 fXInit[0]=xm[3][1];
390 fYInit[0]=ym[3][0];
391 fXInit[1]=xm[0][0];
392 fYInit[1]=ym[0][0];
393 }
394 AliDebug(1,"cas (2) CombiDoubleMathiesonFit(c)");
395 chi2=CombiDoubleMathiesonFit(c);
396// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
397// Float_t prob = TMath::Prob(chi2,ndf);
398// prob2->Fill(prob);
399// chi2_2->Fill(chi2);
400 AliDebug(1,Form(" chi2 %f\n",chi2));
401
402// If reasonable chi^2 add result to the list of rawclusters
403 if (chi2<10) {
404 Split(c);
405
406 } else {
407// 1 maximum is initialised with the maximum of the combination found (X->cathode 2, Y->cathode 1)
408// 1 maximum is initialised with the other maximum of the second cathode
409 if (accepted[0]){
410 AliDebug(1,"ico=0");
411 fXInit[0]=xm[0][1];
412 fYInit[0]=ym[0][0];
413 fXInit[1]=xm[3][1];
414 fYInit[1]=ym[3][1];
415 } else if (accepted[1]){
416 AliDebug(1,"ico=1");
417 fXInit[0]=xm[1][1];
418 fYInit[0]=ym[1][0];
419 fXInit[1]=xm[2][1];
420 fYInit[1]=ym[2][1];
421 } else if (accepted[2]){
422 AliDebug(1,"ico=2");
423 fXInit[0]=xm[2][1];
424 fYInit[0]=ym[2][0];
425 fXInit[1]=xm[1][1];
426 fYInit[1]=ym[1][1];
427 } else if (accepted[3]){
428 AliDebug(1,"ico=3");
429 fXInit[0]=xm[3][1];
430 fYInit[0]=ym[3][0];
431 fXInit[1]=xm[0][1];
432 fYInit[1]=ym[0][1];
433 }
434 AliDebug(1,"\n cas (2) CombiDoubleMathiesonFit(c)\n");
435 chi2=CombiDoubleMathiesonFit(c);
436// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
437// Float_t prob = TMath::Prob(chi2,ndf);
438// prob2->Fill(prob);
439// chi2_2->Fill(chi2);
440 AliDebug(1,Form(" chi2 %f\n",chi2));
441
442// If reasonable chi^2 add result to the list of rawclusters
443 if (chi2<10) {
444 Split(c);
445 } else {
446//We keep only the combination found (X->cathode 2, Y->cathode 1)
447 for (Int_t ico=0; ico<2; ico++) {
448 if (accepted[ico]) {
449 AliMUONRawCluster cnew;
450 Int_t cath;
451 for (cath=0; cath<2; cath++) {
452 cnew.SetX(cath, Float_t(xm[ico][1]));
453 cnew.SetY(cath, Float_t(ym[ico][0]));
454 cnew.SetZ(cath, fZPlane);
455 cnew.SetMultiplicity(cath,c->GetMultiplicity(cath));
456 for (i=0; i<fMul[cath]; i++) {
457 cnew.SetIndex(i, cath, c->GetIndex(i,cath));
458 fSeg2[cath]->SetPad(fInput->DetElemId(), fIx[i][cath], fIy[i][cath]);
459 }
460 AliDebug(1,Form("\nRawCluster %d cath %d\n",ico,cath));
461 AliDebug(1,Form("mult_av %d\n",c->GetMultiplicity(cath)));
462 FillCluster(&cnew,cath);
463 }
464 cnew.SetClusterType(cnew.PhysicsContribution());
465 AddRawCluster(cnew);
466 fNPeaks++;
467 }
468 }
469 }
470 }
471 }
472
473// ******* iacc = 2 *******
474// Two combinations found between the 2 cathodes
475 if (iacc==2) {
476// Was the same maximum taken twice
477 if ((accepted[0]&&accepted[1]) || (accepted[2]&&accepted[3])) {
478 AliDebug(1,"\n Maximum taken twice !!!\n");
479
480// Have a try !! with that
481 if (accepted[0]&&accepted[3]) {
482 fXInit[0]=xm[0][1];
483 fYInit[0]=ym[0][0];
484 fXInit[1]=xm[1][1];
485 fYInit[1]=ym[1][0];
486 } else {
487 fXInit[0]=xm[2][1];
488 fYInit[0]=ym[2][0];
489 fXInit[1]=xm[3][1];
490 fYInit[1]=ym[3][0];
491 }
492 AliDebug(1,"\n cas (2) CombiDoubleMathiesonFit(c)\n");
493 chi2=CombiDoubleMathiesonFit(c);
494// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
495// Float_t prob = TMath::Prob(chi2,ndf);
496// prob2->Fill(prob);
497// chi2_2->Fill(chi2);
498 Split(c);
499
500 } else {
501// No ghosts ! No Problems ! - Perform one fit only !
502 if (accepted[0]&&accepted[3]) {
503 fXInit[0]=xm[0][1];
504 fYInit[0]=ym[0][0];
505 fXInit[1]=xm[3][1];
506 fYInit[1]=ym[3][0];
507 } else {
508 fXInit[0]=xm[1][1];
509 fYInit[0]=ym[1][0];
510 fXInit[1]=xm[2][1];
511 fYInit[1]=ym[2][0];
512 }
513 AliDebug(1,"\n cas (2) CombiDoubleMathiesonFit(c)\n");
514 chi2=CombiDoubleMathiesonFit(c);
515// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
516// Float_t prob = TMath::Prob(chi2,ndf);
517// prob2->Fill(prob);
518// chi2_2->Fill(chi2);
519 AliDebug(1,Form(" chi2 %f\n",chi2));
520 Split(c);
521 }
522
523// ******* iacc = 4 *******
524// Four combinations found between the 2 cathodes
525// Ghost !!
526 } else if (iacc==4) {
527// Perform fits for the two possibilities !!
528// Accept if charges are compatible on both cathodes
529// If none are compatible, keep everything
530 fXInit[0]=xm[0][1];
531 fYInit[0]=ym[0][0];
532 fXInit[1]=xm[3][1];
533 fYInit[1]=ym[3][0];
534 AliDebug(1,"\n cas (2) CombiDoubleMathiesonFit(c)\n");
535 chi2=CombiDoubleMathiesonFit(c);
536// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
537// Float_t prob = TMath::Prob(chi2,ndf);
538// prob2->Fill(prob);
539// chi2_2->Fill(chi2);
540 AliDebug(1,Form(" chi2 %f\n",chi2));
541 // store results of fit and postpone decision
542 Double_t sXFit[2],sYFit[2],sQrFit[2];
543 Float_t sChi2[2];
544 for (Int_t i=0;i<2;i++) {
545 sXFit[i]=fXFit[i];
546 sYFit[i]=fYFit[i];
547 sQrFit[i]=fQrFit[i];
548 sChi2[i]=fChi2[i];
549 }
550 fXInit[0]=xm[1][1];
551 fYInit[0]=ym[1][0];
552 fXInit[1]=xm[2][1];
553 fYInit[1]=ym[2][0];
554 AliDebug(1,"\n cas (2) CombiDoubleMathiesonFit(c)\n");
555 chi2=CombiDoubleMathiesonFit(c);
556// ndf = fgNbins[0]+fgNbins[1]-6;
557// prob = TMath::Prob(chi2,ndf);
558// prob2->Fill(prob);
559// chi2_2->Fill(chi2);
560 AliDebug(1,Form(" chi2 %f\n",chi2));
561 // We have all informations to perform the decision
562 // Compute the chi2 for the 2 possibilities
563 Float_t chi2fi,chi2si,chi2f,chi2s;
564
565 chi2f = (TMath::Log(fInput->TotalCharge(0)*fQrFit[0]
566 / (fInput->TotalCharge(1)*fQrFit[1]) )
567 / fInput->ChargeCorrel() );
568 chi2f *=chi2f;
569 chi2fi = (TMath::Log(fInput->TotalCharge(0)*(1-fQrFit[0])
570 / (fInput->TotalCharge(1)*(1-fQrFit[1])) )
571 / fInput->ChargeCorrel() );
572 chi2f += chi2fi*chi2fi;
573
574 chi2s = (TMath::Log(fInput->TotalCharge(0)*sQrFit[0]
575 / (fInput->TotalCharge(1)*sQrFit[1]) )
576 / fInput->ChargeCorrel() );
577 chi2s *=chi2s;
578 chi2si = (TMath::Log(fInput->TotalCharge(0)*(1-sQrFit[0])
579 / (fInput->TotalCharge(1)*(1-sQrFit[1])) )
580 / fInput->ChargeCorrel() );
581 chi2s += chi2si*chi2si;
582
583 // usefull to store the charge matching chi2 in the cluster
584 // fChi2[0]=sChi2[1]=chi2f;
585 // fChi2[1]=sChi2[0]=chi2s;
586
587 if (chi2f<=fGhostChi2Cut && chi2s<=fGhostChi2Cut)
588 c->SetGhost(1);
589 if (chi2f>fGhostChi2Cut && chi2s>fGhostChi2Cut) {
590 // we keep the ghost
591 c->SetGhost(2);
592 chi2s=-1;
593 chi2f=-1;
594 }
595 if (chi2f<=fGhostChi2Cut)
596 Split(c);
597 if (chi2s<=fGhostChi2Cut) {
598 // retreive saved values
599 for (Int_t i=0;i<2;i++) {
600 fXFit[i]=sXFit[i];
601 fYFit[i]=sYFit[i];
602 fQrFit[i]=sQrFit[i];
603 fChi2[i]=sChi2[i];
604 }
605 Split(c);
606 }
607 c->SetGhost(0);
608 }
609
610 } else if (fNLocal[0]==2 && fNLocal[1]==1) {
611// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
612// (3) Two local maxima on cathode 1 and one maximum on cathode 2
613// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
614//
615 Float_t xm[4][2], ym[4][2];
616 Float_t dpx, dpy, dx, dy;
617 Int_t ixm[4][2], iym[4][2];
618 Int_t isec, im1, ico;
619//
620// Form the 2x2 combinations
621// 0-0, 0-1, 1-0, 1-1
622 ico=0;
623 for (im1=0; im1<2; im1++) {
624 xm[ico][0]=fX[fIndLocal[im1][0]][0];
625 ym[ico][0]=fY[fIndLocal[im1][0]][0];
626 xm[ico][1]=fX[fIndLocal[0][1]][1];
627 ym[ico][1]=fY[fIndLocal[0][1]][1];
628
629 ixm[ico][0]=fIx[fIndLocal[im1][0]][0];
630 iym[ico][0]=fIy[fIndLocal[im1][0]][0];
631 ixm[ico][1]=fIx[fIndLocal[0][1]][1];
632 iym[ico][1]=fIy[fIndLocal[0][1]][1];
633 ico++;
634 }
635// ico = 0 : first local maximum on cathodes 1 and 2
636// ico = 1 : second local maximum on cathode 1 and first on cathode 2
637
638// Analyse the combinations and keep those that are possible !
639// For each combination check consistency in x and y
640 Int_t iacc;
641 Bool_t accepted[4];
642 iacc=0;
643 // In case of staggering maxima are displaced by exactly half the pad-size in y.
644 // We have to take into account the numerical precision in the consistency check;
645
646 Float_t eps = 1.e-5;
647
648 for (ico=0; ico<2; ico++) {
649 isec=fSeg2[0]->Sector(fInput->DetElemId(), ixm[ico][0], iym[ico][0]);
650 dpx=fSeg2[0]->Dpx(fInput->DetElemId(), isec)/2.;
651
652 dx=TMath::Abs(xm[ico][0]-xm[ico][1]);
653 isec=fSeg2[1]->Sector(fInput->DetElemId(), ixm[ico][1], iym[ico][1]);
654 dpy=fSeg2[1]->Dpy(fInput->DetElemId(), isec)/2.;
655
656 dy=TMath::Abs(ym[ico][0]-ym[ico][1]);
657 AliDebug(2,Form("\n %i %f %f %f %f \n", ico, ym[ico][0], ym[ico][1], dy, dpy ));
658 if ((dx <= dpx) && (dy <= dpy+eps)) {
659 // consistent
660 accepted[ico]=kTRUE;
661 iacc++;
662 } else {
663 // reject
664 accepted[ico]=kFALSE;
665 }
666 }
667
668 Float_t chi21 = 100;
669 Float_t chi22 = 100;
670 Float_t chi23 = 100;
671
672 // Initial value for charge ratios
673 fQrInit[0]=Float_t(fQ[fIndLocal[0][0]][0])/
674 Float_t(fQ[fIndLocal[0][0]][0]+fQ[fIndLocal[1][0]][0]);
675 fQrInit[1]=fQrInit[0];
676
677 if (accepted[0] && accepted[1]) {
678
679 fXInit[0]=0.5*(xm[0][1]+xm[0][0]);
680 fYInit[0]=ym[0][0];
681 fXInit[1]=0.5*(xm[0][1]+xm[1][0]);
682 fYInit[1]=ym[1][0];
683 fQrInit[0]=0.5;
684 fQrInit[1]=0.5;
685 chi23=CombiDoubleMathiesonFit(c);
686 if (chi23<10) {
687 Split(c);
688 Float_t yst;
689 yst = fYFit[0];
690 fYFit[0] = fYFit[1];
691 fYFit[1] = yst;
692 Split(c);
693 }
694 } else if (accepted[0]) {
695 fXInit[0]=xm[0][1];
696 fYInit[0]=ym[0][0];
697 fXInit[1]=xm[1][0];
698 fYInit[1]=ym[1][0];
699 chi21=CombiDoubleMathiesonFit(c);
700// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
701// Float_t prob = TMath::Prob(chi2,ndf);
702// prob2->Fill(prob);
703// chi2_2->Fill(chi21);
704 AliDebug(1,Form(" chi2 %f\n",chi21));
705 if (chi21<10) Split(c);
706 } else if (accepted[1]) {
707 fXInit[0]=xm[1][1];
708 fYInit[0]=ym[1][0];
709 fXInit[1]=xm[0][0];
710 fYInit[1]=ym[0][0];
711 chi22=CombiDoubleMathiesonFit(c);
712// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
713// Float_t prob = TMath::Prob(chi2,ndf);
714// prob2->Fill(prob);
715// chi2_2->Fill(chi22);
716 AliDebug(1,Form(" chi2 %f\n",chi22));
717 if (chi22<10) Split(c);
718 }
719
720 if (chi21 > 10 && chi22 > 10 && chi23 > 10) {
721// We keep only the combination found (X->cathode 2, Y->cathode 1)
722 for (Int_t ico=0; ico<2; ico++) {
723 if (accepted[ico]) {
724 AliMUONRawCluster cnew;
725 Int_t cath;
726 for (cath=0; cath<2; cath++) {
727 cnew.SetX(cath, Float_t(xm[ico][1]));
728 cnew.SetY(cath, Float_t(ym[ico][0]));
729 cnew.SetZ(cath, fZPlane);
730 cnew.SetMultiplicity(cath, c->GetMultiplicity(cath));
731 for (i=0; i<fMul[cath]; i++) {
732 cnew.SetIndex(i, cath, c->GetIndex(i, cath));
733 fSeg2[cath]->SetPad(fInput->DetElemId(), fIx[i][cath], fIy[i][cath]);
734
735 }
736 AliDebug(1,Form("\nRawCluster %d cath %d\n",ico,cath));
737 AliDebug(1,Form("mult_av %d\n",c->GetMultiplicity(cath)));
738
739 FillCluster(&cnew,cath);
740 }
741 cnew.SetClusterType(cnew.PhysicsContribution());
742 AddRawCluster(cnew);
743 fNPeaks++;
744 }
745 }
746 }
747
748// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
749// (3') One local maximum on cathode 1 and two maxima on cathode 2
750// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
751 } else if (fNLocal[0]==1 && fNLocal[1]==2) {
752 Float_t xm[4][2], ym[4][2];
753 Float_t dpx, dpy, dx, dy;
754 Int_t ixm[4][2], iym[4][2];
755 Int_t isec, im1, ico;
756//
757// Form the 2x2 combinations
758// 0-0, 0-1, 1-0, 1-1
759 ico=0;
760 for (im1=0; im1<2; im1++) {
761 xm[ico][0]=fX[fIndLocal[0][0]][0];
762 ym[ico][0]=fY[fIndLocal[0][0]][0];
763 xm[ico][1]=fX[fIndLocal[im1][1]][1];
764 ym[ico][1]=fY[fIndLocal[im1][1]][1];
765
766 ixm[ico][0]=fIx[fIndLocal[0][0]][0];
767 iym[ico][0]=fIy[fIndLocal[0][0]][0];
768 ixm[ico][1]=fIx[fIndLocal[im1][1]][1];
769 iym[ico][1]=fIy[fIndLocal[im1][1]][1];
770 ico++;
771 }
772// ico = 0 : first local maximum on cathodes 1 and 2
773// ico = 1 : first local maximum on cathode 1 and second on cathode 2
774
775// Analyse the combinations and keep those that are possible !
776// For each combination check consistency in x and y
777 Int_t iacc;
778 Bool_t accepted[4];
779 iacc=0;
780 // In case of staggering maxima are displaced by exactly half the pad-size in y.
781 // We have to take into account the numerical precision in the consistency check;
782 Float_t eps = 1.e-5;
783
784
785 for (ico=0; ico<2; ico++) {
786 accepted[ico]=kFALSE;
787 isec=fSeg2[0]->Sector(fInput->DetElemId(), ixm[ico][0], iym[ico][0]);
788 dpx=fSeg2[0]->Dpx(fInput->DetElemId(), isec)/2.;
789
790 dx=TMath::Abs(xm[ico][0]-xm[ico][1]);
791 isec=fSeg2[1]->Sector(fInput->DetElemId(), ixm[ico][1], iym[ico][1]);
792 dpy=fSeg2[1]->Dpy(fInput->DetElemId(), isec)/2.;
793
794 dy=TMath::Abs(ym[ico][0]-ym[ico][1]);
795 AliDebug(1,Form("\n %i %f %f %f %f \n", ico, ym[ico][0], ym[ico][1], dy, dpy ));
796 if ((dx <= dpx) && (dy <= dpy+eps)) {
797 // consistent
798 accepted[ico]=kTRUE;
799 AliDebug(1,Form("ico %d\n",ico));
800 iacc++;
801 } else {
802 // reject
803 accepted[ico]=kFALSE;
804 }
805 }
806
807 Float_t chi21 = 100;
808 Float_t chi22 = 100;
809 Float_t chi23 = 100;
810
811 fQrInit[1]=Float_t(fQ[fIndLocal[0][1]][1])/
812 Float_t(fQ[fIndLocal[0][1]][1]+fQ[fIndLocal[1][1]][1]);
813
814 fQrInit[0]=fQrInit[1];
815
816
817 if (accepted[0] && accepted[1]) {
818 fXInit[0]=xm[0][1];
819 fYInit[0]=0.5*(ym[0][0]+ym[0][1]);
820 fXInit[1]=xm[1][1];
821 fYInit[1]=0.5*(ym[0][0]+ym[1][1]);
822 fQrInit[0]=0.5;
823 fQrInit[1]=0.5;
824 chi23=CombiDoubleMathiesonFit(c);
825 if (chi23<10) {
826 Split(c);
827 Float_t yst;
828 yst = fYFit[0];
829 fYFit[0] = fYFit[1];
830 fYFit[1] = yst;
831 Split(c);
832 }
833 } else if (accepted[0]) {
834 fXInit[0]=xm[0][0];
835 fYInit[0]=ym[0][1];
836 fXInit[1]=xm[1][1];
837 fYInit[1]=ym[1][1];
838 chi21=CombiDoubleMathiesonFit(c);
839// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
840// Float_t prob = TMath::Prob(chi2,ndf);
841// prob2->Fill(prob);
842// chi2_2->Fill(chi21);
843 AliDebug(1,Form(" chi2 %f\n",chi21));
844 if (chi21<10) Split(c);
845 } else if (accepted[1]) {
846 fXInit[0]=xm[1][0];
847 fYInit[0]=ym[1][1];
848 fXInit[1]=xm[0][1];
849 fYInit[1]=ym[0][1];
850 chi22=CombiDoubleMathiesonFit(c);
851// Int_t ndf = fgNbins[0]+fgNbins[1]-6;
852// Float_t prob = TMath::Prob(chi2,ndf);
853// prob2->Fill(prob);
854// chi2_2->Fill(chi22);
855 AliDebug(1,Form(" chi2 %f\n",chi22));
856 if (chi22<10) Split(c);
857 }
858
859 if (chi21 > 10 && chi22 > 10 && chi23 > 10) {
860//We keep only the combination found (X->cathode 2, Y->cathode 1)
861 for (Int_t ico=0; ico<2; ico++) {
862 if (accepted[ico]) {
863 AliMUONRawCluster cnew;
864 Int_t cath;
865 for (cath=0; cath<2; cath++) {
866 cnew.SetX(cath, Float_t(xm[ico][1]));
867 cnew.SetY(cath, Float_t(ym[ico][0]));
868 cnew.SetZ(cath, fZPlane);
869 cnew.SetMultiplicity(cath, c->GetMultiplicity(cath));
870 for (i=0; i<fMul[cath]; i++) {
871 cnew.SetIndex(i, cath, c->GetIndex(i, cath));
872 fSeg2[cath]->SetPad(fInput->DetElemId(), fIx[i][cath], fIy[i][cath]);
873 }
874 AliDebug(1,Form("\nRawCluster %d cath %d\n",ico,cath));
875 AliDebug(1,Form("mult_av %d\n",c->GetMultiplicity(cath)));
876 FillCluster(&cnew,cath);
877 }
878 cnew.SetClusterType(cnew.PhysicsContribution());
879 AddRawCluster(cnew);
880 fNPeaks++;
881 }
882 }
883 }
884
885// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
886// (4) At least three local maxima on cathode 1 or on cathode 2
887// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
888 } else if (fNLocal[0]>2 || fNLocal[1]>2) {
889 Int_t param = fNLocal[0]*fNLocal[1];
890 Int_t ii;
891
892 Float_t ** xm = new Float_t * [param];
893 for (ii=0; ii<param; ii++) xm[ii]=new Float_t [2];
894 Float_t ** ym = new Float_t * [param];
895 for (ii=0; ii<param; ii++) ym[ii]=new Float_t [2];
896 Int_t ** ixm = new Int_t * [param];
897 for (ii=0; ii<param; ii++) ixm[ii]=new Int_t [2];
898 Int_t ** iym = new Int_t * [param];
899 for (ii=0; ii<param; ii++) iym[ii]=new Int_t [2];
900
901 Int_t isec, ico;
902 Float_t dpx, dpy, dx, dy;
903
904 ico=0;
905 for (Int_t im1=0; im1<fNLocal[0]; im1++) {
906 for (Int_t im2=0; im2<fNLocal[1]; im2++) {
907 xm[ico][0]=fX[fIndLocal[im1][0]][0];
908 ym[ico][0]=fY[fIndLocal[im1][0]][0];
909 xm[ico][1]=fX[fIndLocal[im2][1]][1];
910 ym[ico][1]=fY[fIndLocal[im2][1]][1];
911
912 ixm[ico][0]=fIx[fIndLocal[im1][0]][0];
913 iym[ico][0]=fIy[fIndLocal[im1][0]][0];
914 ixm[ico][1]=fIx[fIndLocal[im2][1]][1];
915 iym[ico][1]=fIy[fIndLocal[im2][1]][1];
916 ico++;
917 }
918 }
919
920 Int_t nIco = ico;
921 AliDebug(1,Form("nIco %d\n",nIco));
922 for (ico=0; ico<nIco; ico++) {
923 AliDebug(1,Form("ico = %d\n",ico));
924 isec=fSeg2[0]->Sector(fInput->DetElemId(), ixm[ico][0], iym[ico][0]);
925 dpx=fSeg2[0]->Dpx(fInput->DetElemId(), isec)/2.;
926
927 dx=TMath::Abs(xm[ico][0]-xm[ico][1]);
928 isec=fSeg2[1]->Sector(fInput->DetElemId(), ixm[ico][1], iym[ico][1]);
929 dpy=fSeg2[1]->Dpy(fInput->DetElemId(), isec)/2.;
930
931 dy=TMath::Abs(ym[ico][0]-ym[ico][1]);
932 AliDebug(1,Form("dx %f dpx %f dy %f dpy %f\n",dx,dpx,dy,dpy));
933 AliDebug(1,Form(" X %f Y %f\n",xm[ico][1],ym[ico][0]));
934 if ((dx <= dpx) && (dy <= dpy)) {
935 AliDebug(1,"ok\n");
936 Int_t cath;
937 AliMUONRawCluster cnew;
938 for (cath=0; cath<2; cath++) {
939 cnew.SetX(cath, Float_t(xm[ico][1]));
940 cnew.SetY(cath, Float_t(ym[ico][0]));
941 cnew.SetZ(cath, fZPlane);
942 cnew.SetMultiplicity(cath, c->GetMultiplicity(cath));
943 for (i=0; i<fMul[cath]; i++) {
944 cnew.SetIndex(i, cath, c->GetIndex(i, cath));
945 fSeg2[cath]->SetPad(fInput->DetElemId(), fIx[i][cath], fIy[i][cath]);
946 }
947 FillCluster(&cnew,cath);
948 }
949 cnew.SetClusterType(cnew.PhysicsContribution());
950 // cnew.SetDetElemId(fInput->DetElemId());
951 AddRawCluster(cnew);
952 fNPeaks++;
953 }
954 }
955 delete [] xm;
956 delete [] ym;
957 delete [] ixm;
958 delete [] iym;
959 }
960}
961
962void AliMUONClusterFinderVS::FindLocalMaxima(AliMUONRawCluster* /*c*/)
963{
964/// Find all local maxima of a cluster
965 AliDebug(1,"\n Find Local maxima !");
966
967 AliMUONDigit* digt;
968
969 Int_t cath, cath1; // loops over cathodes
970 Int_t i; // loops over digits
971 Int_t j; // loops over cathodes
972//
973// Find local maxima
974//
975// counters for number of local maxima
976 fNLocal[0]=fNLocal[1]=0;
977// flags digits as local maximum
978 Bool_t isLocal[100][2];
979 for (i=0; i<100;i++) {
980 isLocal[i][0]=isLocal[i][1]=kFALSE;
981 }
982// number of next neighbours and arrays to store them
983 Int_t nn;
984 Int_t x[10], y[10];
985 // loop over cathodes
986 for (cath=0; cath<2; cath++) {
987 // loop over cluster digits
988 for (i=0; i<fMul[cath]; i++) {
989 // get neighbours for that digit and assume that it is local maximum
990 Int_t isec;
991 Float_t a0;
992
993 fSeg2[cath]->Neighbours(fInput->DetElemId(), fIx[i][cath], fIy[i][cath], &nn, x, y);
994
995 isLocal[i][cath]=kTRUE;
996 isec = fSeg2[cath]->Sector(fInput->DetElemId(), fIx[i][cath], fIy[i][cath]);
997 a0 = fSeg2[cath]->Dpx(fInput->DetElemId(), isec)*fSeg2[cath]->Dpy(fInput->DetElemId(), isec);
998
999 // loop over next neighbours, if at least one neighbour has higher charger assumption
1000 // digit is not local maximum
1001 for (j=0; j<nn; j++) {
1002 if (fDigitMap[cath]->TestHit(x[j], y[j])==kEmpty) continue;
1003 digt=(AliMUONDigit*) fDigitMap[cath]->GetHit(x[j], y[j]);
1004 Float_t a1;
1005 isec=fSeg2[cath]->Sector(fInput->DetElemId(), x[j], y[j]);
1006 a1 = fSeg2[cath]->Dpx(fInput->DetElemId(),isec)*fSeg2[cath]->Dpy(fInput->DetElemId(), isec);
1007
1008 if (digt->Signal()/a1 > fQ[i][cath]/a0) {
1009 isLocal[i][cath]=kFALSE;
1010 break;
1011 //
1012 // handle special case of neighbouring pads with equal signal
1013 } else if (digt->Signal() == fQ[i][cath]) {
1014 if (fNLocal[cath]>0) {
1015 for (Int_t k=0; k<fNLocal[cath]; k++) {
1016 if (x[j]==fIx[fIndLocal[k][cath]][cath]
1017 && y[j]==fIy[fIndLocal[k][cath]][cath])
1018 {
1019 isLocal[i][cath]=kFALSE;
1020 }
1021 } // loop over local maxima
1022 } // are there already local maxima
1023 } // same charge ?
1024 } // loop over next neighbours
1025 if (isLocal[i][cath]) {
1026 fIndLocal[fNLocal[cath]][cath]=i;
1027 fNLocal[cath]++;
1028 }
1029 } // loop over all digits
1030 } // loop over cathodes
1031
1032 AliDebug(1,Form("\n Found %d %d %d %d local Maxima\n",
1033 fNLocal[0], fNLocal[1], fMul[0], fMul[1]));
1034 AliDebug(1,Form("\n Cathode 1 local Maxima %d Multiplicite %d\n",fNLocal[0], fMul[0]));
1035 AliDebug(1,Form(" Cathode 2 local Maxima %d Multiplicite %d\n",fNLocal[1], fMul[1]));
1036 Int_t ix, iy, isec;
1037 Float_t dpx, dpy;
1038
1039
1040 if (fNLocal[1]==2 && (fNLocal[0]==1 || fNLocal[0]==0)) {
1041 Int_t iback=fNLocal[0];
1042
1043// Two local maxima on cathode 2 and one maximum on cathode 1
1044// Look for local maxima considering up and down neighbours on the 1st cathode only
1045//
1046// Loop over cluster digits
1047 cath=0;
1048 cath1=1;
1049
1050 for (i=0; i<fMul[cath]; i++) {
1051 isec=fSeg2[cath]->Sector(fInput->DetElemId(), fIx[i][cath],fIy[i][cath]);
1052 dpy=fSeg2[cath]->Dpy(fInput->DetElemId(), isec);
1053 dpx=fSeg2[cath]->Dpx(fInput->DetElemId(), isec);
1054
1055 if (isLocal[i][cath]) continue;
1056// Pad position should be consistent with position of local maxima on the opposite cathode
1057 if ((TMath::Abs(fX[i][cath]-fX[fIndLocal[0][cath1]][cath1]) > dpx/2.) &&
1058 (TMath::Abs(fX[i][cath]-fX[fIndLocal[1][cath1]][cath1]) > dpx/2.))
1059 continue;
1060
1061// get neighbours for that digit and assume that it is local maximum
1062 isLocal[i][cath]=kTRUE;
1063// compare signal to that on the two neighbours on the left and on the right
1064// iNN counts the number of neighbours with signal, it should be 1 or 2
1065 Int_t iNN=0;
1066
1067
1068 for (fSeg2[cath]->FirstPad(fInput->DetElemId(), fX[i][cath], fY[i][cath], fZPlane, 0., dpy);
1069 fSeg2[cath]->MorePads(fInput->DetElemId());
1070 fSeg2[cath]->NextPad(fInput->DetElemId()))
1071 {
1072 ix = fSeg2[cath]->Ix();
1073 iy = fSeg2[cath]->Iy();
1074 // skip the current pad
1075 if (iy == fIy[i][cath]) continue;
1076
1077 if (fDigitMap[cath]->TestHit(ix, iy)!=kEmpty) {
1078 iNN++;
1079 digt=(AliMUONDigit*) fDigitMap[cath]->GetHit(ix,iy);
1080 if (digt->Signal() > fQ[i][cath]) isLocal[i][cath]=kFALSE;
1081 }
1082 } // Loop over pad neighbours in y
1083
1084 if (isLocal[i][cath] && iNN>0) {
1085 fIndLocal[fNLocal[cath]][cath]=i;
1086 fNLocal[cath]++;
1087 }
1088 } // loop over all digits
1089// if one additional maximum has been found we are happy
1090// if more maxima have been found restore the previous situation
1091 AliDebug(1,Form("\n New search gives %d local maxima for cathode 1 \n",
1092 fNLocal[0]));
1093 AliDebug(1,Form(" %d local maxima for cathode 2 \n",
1094 fNLocal[1]));
1095 if (fNLocal[cath]>2) {
1096 fNLocal[cath]=iback;
1097 }
1098
1099 } // 1,2 local maxima
1100
1101 if (fNLocal[0]==2 && (fNLocal[1]==1 || fNLocal[1]==0)) {
1102 Int_t iback=fNLocal[1];
1103
1104// Two local maxima on cathode 1 and one maximum on cathode 2
1105// Look for local maxima considering left and right neighbours on the 2nd cathode only
1106 cath=1;
1107 Int_t cath1 = 0;
1108 Float_t eps = 1.e-5;
1109
1110//
1111// Loop over cluster digits
1112 for (i=0; i<fMul[cath]; i++) {
1113 isec=fSeg2[cath]->Sector(fInput->DetElemId(), fIx[i][cath],fIy[i][cath]);
1114 dpx=fSeg2[cath]->Dpx(fInput->DetElemId(), isec);
1115 dpy=fSeg2[cath]->Dpy(fInput->DetElemId(), isec);
1116
1117
1118 if (isLocal[i][cath]) continue;
1119// Pad position should be consistent with position of local maxima on the opposite cathode
1120 if ((TMath::Abs(fY[i][cath]-fY[fIndLocal[0][cath1]][cath1]) > dpy/2.+eps) &&
1121 (TMath::Abs(fY[i][cath]-fY[fIndLocal[1][cath1]][cath1]) > dpy/2.+eps))
1122 continue;
1123
1124//
1125// get neighbours for that digit and assume that it is local maximum
1126 isLocal[i][cath]=kTRUE;
1127// compare signal to that on the two neighbours on the left and on the right
1128
1129// iNN counts the number of neighbours with signal, it should be 1 or 2
1130 Int_t iNN=0;
1131 for (fSeg2[cath]->FirstPad(fInput->DetElemId(), fX[i][cath], fY[i][cath], fZPlane, dpx, 0.);
1132 fSeg2[cath]->MorePads(fInput->DetElemId());
1133 fSeg2[cath]->NextPad(fInput->DetElemId()))
1134 {
1135
1136 ix = fSeg2[cath]->Ix();
1137 iy = fSeg2[cath]->Iy();
1138
1139 // skip the current pad
1140 if (ix == fIx[i][cath]) continue;
1141
1142 if (fDigitMap[cath]->TestHit(ix, iy)!=kEmpty) {
1143 iNN++;
1144 digt=(AliMUONDigit*) fDigitMap[cath]->GetHit(ix,iy);
1145 if (digt->Signal() > fQ[i][cath]) isLocal[i][cath]=kFALSE;
1146 }
1147 } // Loop over pad neighbours in x
1148
1149 if (isLocal[i][cath] && iNN>0) {
1150 fIndLocal[fNLocal[cath]][cath]=i;
1151 fNLocal[cath]++;
1152 }
1153 } // loop over all digits
1154// if one additional maximum has been found we are happy
1155// if more maxima have been found restore the previous situation
1156 AliDebug(1,Form("\n New search gives %d local maxima for cathode 1 \n",fNLocal[0]));
1157 AliDebug(1,Form("\n %d local maxima for cathode 2 \n",fNLocal[1]));
1158 AliDebug(1,Form("\n New search gives %d %d \n",fNLocal[0],fNLocal[1]));
1159 if (fNLocal[cath]>2) {
1160 fNLocal[cath]=iback;
1161 }
1162 } // 2,1 local maxima
1163}
1164
1165
1166void AliMUONClusterFinderVS::FillCluster(AliMUONRawCluster* c, Int_t flag, Int_t cath)
1167{
1168/// Completes cluster information starting from list of digits
1169
1170 AliMUONDigit* dig;
1171 Float_t x, y, z;
1172 Int_t ix, iy;
1173
1174 if (cath==1) {
1175 c->SetPeakSignal(cath,c->GetPeakSignal(0));
1176 } else {
1177 c->SetPeakSignal(cath,0);
1178 }
1179
1180
1181 if (flag) {
1182 c->SetX(cath,0.);
1183 c->SetY(cath,0.);
1184 c->SetCharge(cath,0);
1185 }
1186
1187 AliDebug(1,Form("\n fPeakSignal %d\n",c->GetPeakSignal(cath)));
1188 for (Int_t i=0; i<c->GetMultiplicity(cath); i++)
1189 {
1190 dig= fInput->Digit(cath,c->GetIndex(i,cath));
1191 ix=dig->PadX()+c->GetOffset(i,cath);
1192 iy=dig->PadY();
1193 Float_t q=dig->Signal();
1194 if (!flag) q *= c->GetContrib(i,cath);
1195 // fprintf(stderr,"q %d c->fPeakSignal[ %d ] %d\n",q,cath,c->fPeakSignal[cath]);
1196 if (dig->Physics() >= dig->Signal()) {
1197 c->SetPhysics(i,2);
1198 } else if (dig->Physics() == 0) {
1199 c->SetPhysics(i,0);
1200 } else c->SetPhysics(i,1);
1201 //
1202 //
1203 AliDebug(2,Form("q %d c->fPeakSignal[cath] %d\n",q,c->GetPeakSignal(cath)));
1204 // peak signal and track list
1205 if (q>c->GetPeakSignal(cath)) {
1206 c->SetPeakSignal(cath, q);
1207 c->SetTrack(0,dig->Hit());
1208 c->SetTrack(1,dig->Track(0));
1209 c->SetTrack(2,dig->Track(1));
1210 // fprintf(stderr," c->fTracks[0] %d c->fTracks[1] %d\n",dig->fHit,dig->fTracks[0]);
1211 }
1212 //
1213 if (flag) {
1214 fSeg2[cath]->GetPadC(fInput->DetElemId(), ix, iy, x, y, z);
1215
1216 c->AddX(cath, q*x);
1217 c->AddY(cath, q*y);
1218 c->AddCharge(cath, q);
1219 }
1220 } // loop over digits
1221 AliDebug(1," fin du cluster c\n");
1222
1223
1224 if (flag) {
1225 c->SetX(cath, c->GetX(cath)/c->GetCharge(cath));
1226 // Force on anod
1227 c->SetX(cath, fSeg2[cath]->GetAnod(fInput->DetElemId(), c->GetX(cath)));
1228 c->SetY(cath, c->GetY(cath)/c->GetCharge(cath));
1229 //
1230 // apply correction to the coordinate along the anode wire
1231 //
1232 x=c->GetX(cath);
1233 y=c->GetY(cath);
1234 TF1* cogCorr;
1235 Int_t isec;
1236 fSeg2[cath]->GetPadI(fInput->DetElemId(), x, y, fZPlane, ix, iy);
1237 fSeg2[cath]->GetPadC(fInput->DetElemId(), ix, iy, x, y, z);
1238 isec=fSeg2[cath]->Sector(fInput->DetElemId(), ix,iy);
1239 cogCorr = fSeg2[cath]->CorrFunc(fInput->DetElemId(), isec-1);
1240
1241
1242 if (cogCorr) {
1243 Float_t yOnPad;
1244 yOnPad=(c->GetY(cath)-y)/fSeg2[cath]->Dpy(fInput->DetElemId(), isec);
1245
1246 c->SetY(cath, c->GetY(cath)-cogCorr->Eval(yOnPad, 0, 0));
1247 // slat ID from digit
1248
1249 }
1250 }
1251}
1252
1253void AliMUONClusterFinderVS::FillCluster(AliMUONRawCluster* c, Int_t cath)
1254{
1255/// Completes cluster information starting from list of digits
1256
1257 static Float_t dr0;
1258
1259 AliMUONDigit* dig;
1260
1261 if (cath==0) {
1262 dr0 = 10000;
1263 }
1264
1265 Float_t xpad, ypad, zpad;
1266 Float_t dx, dy, dr;
1267
1268 for (Int_t i=0; i<c->GetMultiplicity(cath); i++)
1269 {
1270 dig = fInput->Digit(cath,c->GetIndex(i,cath));
1271 fSeg2[cath]->
1272 GetPadC(fInput->DetElemId(),dig->PadX(),dig->PadY(),xpad,ypad, zpad);
1273 AliDebug(1,Form("x %f y %f cx %f cy %f\n",xpad,ypad,c->GetX(0),c->GetY(0)));
1274 dx = xpad - c->GetX(0);
1275 dy = ypad - c->GetY(0);
1276 dr = TMath::Sqrt(dx*dx+dy*dy);
1277
1278 if (dr < dr0) {
1279 dr0 = dr;
1280 AliDebug(1,Form(" dr %f\n",dr));
1281 Float_t q=dig->Signal();
1282 if (dig->Physics() >= dig->Signal()) {
1283 c->SetPhysics(i,2);
1284 } else if (dig->Physics() == 0) {
1285 c->SetPhysics(i,0);
1286 } else c->SetPhysics(i,1);
1287 c->SetPeakSignal(cath,q);
1288 c->SetTrack(0,dig->Hit());
1289 c->SetTrack(1,dig->Track(0));
1290 c->SetTrack(2,dig->Track(1));
1291
1292 AliDebug(1,Form(" c->fTracks[0] %d c->fTracks[1] %d\n",dig->Hit(),
1293 dig->Track(0)));
1294 }
1295 //
1296 } // loop over digits
1297
1298 // apply correction to the coordinate along the anode wire
1299 // Force on anod
1300 c->SetX(cath,fSeg2[cath]->GetAnod(fInput->DetElemId(), c->GetX(cath)));
1301}
1302
1303void AliMUONClusterFinderVS::FindCluster(Int_t i, Int_t j, Int_t cath, AliMUONRawCluster &c)
1304{
1305/// Find a super cluster on both cathodes
1306/// Add i,j as element of the cluster
1307
1308 Int_t idx = fDigitMap[cath]->GetHitIndex(i,j);
1309 AliMUONDigit* dig = (AliMUONDigit*) fDigitMap[cath]->GetHit(i,j);
1310 Float_t q=dig->Signal();
1311 Int_t theX=dig->PadX();
1312 Int_t theY=dig->PadY();
1313
1314 if (q > TMath::Abs(c.GetPeakSignal(0)) && q > TMath::Abs(c.GetPeakSignal(1))) {
1315 c.SetPeakSignal(cath,q);
1316 c.SetTrack(0,dig->Hit());
1317 c.SetTrack(1,dig->Track(0));
1318 c.SetTrack(2,dig->Track(1));
1319 }
1320
1321//
1322// Make sure that list of digits is ordered
1323//
1324 Int_t mu=c.GetMultiplicity(cath);
1325 c.SetIndex(mu, cath, idx);
1326
1327 if (dig->Physics() >= dig->Signal()) {
1328 c.SetPhysics(mu,2);
1329 } else if (dig->Physics() == 0) {
1330 c.SetPhysics(mu,0);
1331 } else c.SetPhysics(mu,1);
1332
1333
1334 if (mu > 0) {
1335 for (Int_t ind = mu-1; ind >= 0; ind--) {
1336 Int_t ist=c.GetIndex(ind,cath);
1337 Float_t ql=fInput->Digit(cath, ist)->Signal();
1338 Int_t ix=fInput->Digit(cath, ist)->PadX();
1339 Int_t iy=fInput->Digit(cath, ist)->PadY();
1340
1341 if (q>ql || (q==ql && theX > ix && theY < iy)) {
1342 c.SetIndex(ind, cath, idx);
1343 c.SetIndex(ind+1, cath, ist);
1344 } else {
1345
1346 break;
1347 }
1348 }
1349 }
1350
1351 c.SetMultiplicity(cath, c.GetMultiplicity(cath)+1);
1352 if (c.GetMultiplicity(cath) >= 50 ) {
1353 AliDebug(1,Form("FindCluster - multiplicity >50 %d \n",c.GetMultiplicity(0)));
1354 c.SetMultiplicity(cath, 49);
1355 }
1356
1357// Prepare center of gravity calculation
1358 Float_t x, y, z;
1359 fSeg2[cath]->GetPadC(fInput->DetElemId(), i, j, x, y, z);
1360 c.AddX(cath,q*x);
1361 c.AddY(cath,q*y);
1362 c.AddCharge(cath,q);
1363//
1364// Flag hit as "taken"
1365 fDigitMap[cath]->FlagHit(i,j);
1366//
1367// Now look recursively for all neighbours and pad hit on opposite cathode
1368//
1369// Loop over neighbours
1370 Int_t ix,iy;
1371 ix=iy=0;
1372 Int_t nn;
1373 Int_t xList[10], yList[10];
1374 fSeg2[cath]->Neighbours(fInput->DetElemId(), i,j,&nn,xList,yList);
1375 for (Int_t in=0; in<nn; in++) {
1376 ix=xList[in];
1377 iy=yList[in];
1378
1379 if (fDigitMap[cath]->TestHit(ix,iy)==kUnused) {
1380 AliDebug(2,Form("\n Neighbours %d %d %d", cath, ix, iy));
1381 FindCluster(ix, iy, cath, c);
1382 }
1383
1384 }
1385 Int_t nOpp=0;
1386 Int_t iXopp[50], iYopp[50];
1387
1388// Neighbours on opposite cathode
1389// Take into account that several pads can overlap with the present pad
1390 Int_t isec;
1391 isec=fSeg2[cath]->Sector(fInput->DetElemId(), i,j);
1392
1393 Int_t iop;
1394 Float_t dx, dy;
1395
1396 if (cath==0) {
1397 iop = 1;
1398 dx = (fSeg2[cath]->Dpx(fInput->DetElemId(), isec))/2.;
1399 dy = 0.;
1400 } else {
1401 iop = 0;
1402 dx = 0.;
1403 dy = (fSeg2[cath]->Dpy(fInput->DetElemId(), isec))/2;
1404 }
1405
1406
1407
1408 // loop over pad neighbours on opposite cathode
1409 for (fSeg2[iop]->FirstPad(fInput->DetElemId(), x, y, fZPlane, dx, dy);
1410 fSeg2[iop]->MorePads(fInput->DetElemId());
1411 fSeg2[iop]->NextPad(fInput->DetElemId()))
1412 {
1413
1414 ix = fSeg2[iop]->Ix(); iy = fSeg2[iop]->Iy();
1415 AliDebug(2,Form("\n ix, iy: %f %f %f %d %d %d", x,y,z,ix, iy, fSector));
1416 if (fDigitMap[iop]->TestHit(ix,iy)==kUnused){
1417 iXopp[nOpp]=ix;
1418 iYopp[nOpp++]=iy;
1419 AliDebug(2,Form("\n Opposite %d %d %d", iop, ix, iy));
1420 }
1421
1422 } // Loop over pad neighbours
1423 // This had to go outside the loop since recursive calls inside the iterator are not possible
1424 //
1425 Int_t jopp;
1426 for (jopp=0; jopp<nOpp; jopp++) {
1427 if (fDigitMap[iop]->TestHit(iXopp[jopp],iYopp[jopp]) == kUnused)
1428 FindCluster(iXopp[jopp], iYopp[jopp], iop, c);
1429 }
1430
1431}
1432
1433//_____________________________________________________________________________
1434
1435void AliMUONClusterFinderVS::FindRawClusters()
1436{
1437/// MUON cluster finder from digits -- finds neighbours on both cathodes and
1438/// fills the tree with raw clusters
1439
1440 ResetRawClusters();
1441// Return if no input datad available
1442 if (!fInput->NDigits(0) && !fInput->NDigits(1)) return;
1443
1444 fSeg2[0] = fInput->Segmentation2(0);
1445 fSeg2[1] = fInput->Segmentation2(1);
1446
1447 Int_t detElemId = fInput->DetElemId();
1448
1449 Int_t npx0 = fSeg2[0]->Npx(detElemId)+1;
1450 Int_t npy0 = fSeg2[0]->Npy(detElemId)+1;
1451 fDigitMap[0] = new AliMUONDigitMapA1(detElemId, npx0, npy0);
1452
1453 Int_t npx1 = fSeg2[0]->Npx(detElemId)+1;
1454 Int_t npy1 = fSeg2[0]->Npy(detElemId)+1;
1455 fDigitMap[1] = new AliMUONDigitMapA1(detElemId, npx1, npy1);
1456
1457 AliMUONDigit *dig;
1458
1459 Int_t ndig, cath;
1460 Int_t nskip=0;
1461 Int_t ncls=0;
1462
1463 fDigitMap[0]->FillHits(fInput->Digits(0));
1464 fDigitMap[1]->FillHits(fInput->Digits(1));
1465//
1466// Outer Loop over Cathodes
1467 for (cath = 0; cath < 2; cath++) {
1468
1469 for (ndig=0; ndig<fInput->NDigits(cath); ndig++) {
1470 dig = fInput->Digit(cath, ndig);
1471 Int_t padx = dig->PadX();
1472 Int_t pady = dig->PadY();
1473 if (fDigitMap[cath]->TestHit(padx,pady)==kUsed ||fDigitMap[0]->TestHit(padx,pady)==kEmpty) {
1474 nskip++;
1475 continue;
1476 }
1477 AliDebug(1,Form("\n CATHODE %d CLUSTER %d\n",cath,ncls));
1478 AliMUONRawCluster clus;
1479 clus.SetMultiplicity(0, 0);
1480 clus.SetMultiplicity(1, 0);
1481 clus.SetPeakSignal(cath,dig->Signal());
1482 clus.SetTrack(0, dig->Hit());
1483 clus.SetTrack(1, dig->Track(0));
1484 clus.SetTrack(2, dig->Track(1));
1485
1486 AliDebug(1,Form("idDE %d Padx %d Pady %d", fInput->DetElemId(), padx, pady));
1487
1488 // tag the beginning of cluster list in a raw cluster
1489 clus.SetNcluster(0,-1);
1490 Float_t xcu, ycu;
1491 fSeg2[cath]->GetPadC(fInput->DetElemId(), padx, pady, xcu, ycu, fZPlane);
1492 fSector= fSeg2[cath]->Sector(fInput->DetElemId(), padx, pady)/100;
1493
1494
1495
1496
1497 FindCluster(padx,pady,cath,clus);
1498 //^^^^^^^^^^^^^^^^^^^^^^^^
1499 // center of gravity
1500 if (clus.GetX(0)!=0.) clus.SetX(0, clus.GetX(0)/clus.GetCharge(0)); // clus.fX[0] /= clus.fQ[0];
1501
1502 // Force on anod
1503 clus.SetX(0,fSeg2[0]->GetAnod(fInput->DetElemId(), clus.GetX(0)));
1504 if (clus.GetY(0)!=0.) clus.SetY(0, clus.GetY(0)/clus.GetCharge(0)); // clus.fY[0] /= clus.fQ[0];
1505
1506 if(clus.GetCharge(1)!=0.) clus.SetX(1, clus.GetX(1)/clus.GetCharge(1)); // clus.fX[1] /= clus.fQ[1];
1507
1508 // Force on anod
1509 clus.SetX(1, fSeg2[0]->GetAnod(fInput->DetElemId(),clus.GetX(1)));
1510 if(clus.GetCharge(1)!=0.) clus.SetY(1, clus.GetY(1)/clus.GetCharge(1));// clus.fY[1] /= clus.fQ[1];
1511
1512 clus.SetZ(0, fZPlane);
1513 clus.SetZ(1, fZPlane);
1514
1515 AliDebug(1,Form("\n Cathode 1 multiplicite %d X(CG) %f Y(CG) %f\n",
1516 clus.GetMultiplicity(0),clus.GetX(0),clus.GetY(0)));
1517 AliDebug(1,Form(" Cathode 2 multiplicite %d X(CG) %f Y(CG) %f\n",
1518 clus.GetMultiplicity(1),clus.GetX(1),clus.GetY(1)));
1519 // Analyse cluster and decluster if necessary
1520 //
1521 ncls++;
1522 clus.SetNcluster(1,fNRawClusters);
1523 clus.SetClusterType(clus.PhysicsContribution());
1524
1525 fNPeaks=0;
1526 //
1527 //
1528 Decluster(&clus);
1529 //
1530 // reset Cluster object
1531 { // begin local scope
1532 for (int k=0;k<clus.GetMultiplicity(0);k++) clus.SetIndex(k, 0, 0);
1533 } // end local scope
1534
1535 { // begin local scope
1536 for (int k=0;k<clus.GetMultiplicity(1);k++) clus.SetIndex(k, 1, 0);
1537 } // end local scope
1538
1539 clus.SetMultiplicity(0,0);
1540 clus.SetMultiplicity(1,0);
1541
1542
1543 } // end loop ndig
1544 } // end loop cathodes
1545 delete fDigitMap[0];
1546 delete fDigitMap[1];
1547}
1548
1549Float_t AliMUONClusterFinderVS::SingleMathiesonFit(AliMUONRawCluster *c, Int_t cath)
1550{
1551/// Performs a single Mathieson fit on one cathode
1552
1553 Double_t arglist[20];
1554 Int_t ierflag=0;
1555 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
1556
1557 clusterInput.Fitter()->SetFCN(fcnS1);
1558 clusterInput.Fitter()->mninit(2,10,7);
1559 clusterInput.Fitter()->SetPrintLevel(-1 + AliLog::GetGlobalDebugLevel());
1560 arglist[0]=-1;
1561 clusterInput.Fitter()->mnexcm("SET NOW", arglist, 0, ierflag);
1562// Set starting values
1563 static Double_t vstart[2];
1564 vstart[0]=c->GetX(1);
1565 vstart[1]=c->GetY(0);
1566
1567
1568// lower and upper limits
1569 static Double_t lower[2], upper[2];
1570 Int_t ix,iy, isec;
1571 fSeg2[cath]->GetPadI(fInput->DetElemId(), c->GetX(cath), c->GetY(cath), fZPlane, ix, iy);
1572 isec=fSeg2[cath]->Sector(fInput->DetElemId(), ix, iy);
1573
1574 lower[0]=vstart[0]-fSeg2[cath]->Dpx(fInput->DetElemId(), isec)/2;
1575 lower[1]=vstart[1]-fSeg2[cath]->Dpy(fInput->DetElemId(), isec)/2;
1576
1577 upper[0]=lower[0]+fSeg2[cath]->Dpx(fInput->DetElemId(), isec);
1578 upper[1]=lower[1]+fSeg2[cath]->Dpy(fInput->DetElemId(), isec);
1579
1580
1581// step sizes
1582 static Double_t step[2]={0.0005, 0.0005};
1583
1584 clusterInput.Fitter()->mnparm(0,"x1",vstart[0],step[0],lower[0],upper[0],ierflag);
1585 clusterInput.Fitter()->mnparm(1,"y1",vstart[1],step[1],lower[1],upper[1],ierflag);
1586// ready for minimisation
1587 arglist[0]= -1;
1588 arglist[1]= 0;
1589
1590 clusterInput.Fitter()->mnexcm("SET NOGR", arglist, 0, ierflag);
1591 clusterInput.Fitter()->mnexcm("MIGRAD", arglist, 0, ierflag);
1592 // clusterInput.Fitter()->mnexcm("EXIT" , arglist, 0, ierflag);
1593 Double_t fmin, fedm, errdef;
1594 Int_t npari, nparx, istat;
1595
1596 clusterInput.Fitter()->mnstat(fmin, fedm, errdef, npari, nparx, istat);
1597 fFitStat=istat;
1598
1599// Print results
1600// Get fitted parameters
1601 Double_t xrec, yrec;
1602 TString chname;
1603 Double_t epxz, b1, b2;
1604 Int_t ierflg;
1605 clusterInput.Fitter()->mnpout(0, chname, xrec, epxz, b1, b2, ierflg);
1606 clusterInput.Fitter()->mnpout(1, chname, yrec, epxz, b1, b2, ierflg);
1607 fXFit[cath]=xrec;
1608 fYFit[cath]=yrec;
1609 return fmin;
1610}
1611
1612Float_t AliMUONClusterFinderVS::CombiSingleMathiesonFit(AliMUONRawCluster * /*c*/)
1613{
1614/// Perform combined Mathieson fit on both cathode planes
1615
1616 Double_t arglist[20];
1617 Int_t ierflag=0;
1618 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
1619 clusterInput.Fitter()->SetFCN(fcnCombiS1);
1620 clusterInput.Fitter()->mninit(2,10,7);
1621 clusterInput.Fitter()->SetPrintLevel(-1 + AliLog::GetGlobalDebugLevel());
1622 arglist[0]=-1;
1623 clusterInput.Fitter()->mnexcm("SET NOW", arglist, 0, ierflag);
1624 static Double_t vstart[2];
1625 vstart[0]=fXInit[0];
1626 vstart[1]=fYInit[0];
1627
1628
1629// lower and upper limits
1630 static Float_t lower[2], upper[2];
1631 Int_t ix,iy,isec;
1632 Float_t dpy, dpx;
1633
1634 fSeg2[0]->GetPadI(fInput->DetElemId(), fXInit[0], fYInit[0], fZPlane, ix, iy);
1635 isec=fSeg2[0]->Sector(fInput->DetElemId(), ix, iy);
1636 dpy=fSeg2[0]->Dpy(fInput->DetElemId(), isec);
1637 fSeg2[1]->GetPadI(fInput->DetElemId(), fXInit[0], fYInit[0], fZPlane, ix, iy);
1638 isec=fSeg2[1]->Sector(fInput->DetElemId(), ix, iy);
1639 dpx=fSeg2[1]->Dpx(fInput->DetElemId(), isec);
1640
1641 Int_t icount;
1642 Float_t xdum, ydum, zdum;
1643
1644// Find save upper and lower limits
1645
1646 icount = 0;
1647 for (fSeg2[1]->FirstPad(fInput->DetElemId(),fXInit[0], fYInit[0], fZPlane, dpx, 0.);
1648 fSeg2[1]->MorePads(fInput->DetElemId());
1649 fSeg2[1]->NextPad(fInput->DetElemId()))
1650 {
1651 ix=fSeg2[1]->Ix(); iy=fSeg2[1]->Iy();
1652 fSeg2[1]->GetPadC(fInput->DetElemId(), ix,iy, upper[0], ydum, zdum);
1653 if (icount ==0) lower[0]=upper[0];
1654 icount++;
1655 }
1656
1657 if (lower[0]>upper[0]) {xdum=lower[0]; lower[0]=upper[0]; upper[0]=xdum;}
1658
1659 icount=0;
1660 AliDebug(1,Form("\n single y %f %f", fXInit[0], fYInit[0]));
1661
1662 for (fSeg2[0]->FirstPad(fInput->DetElemId(), fXInit[0], fYInit[0], fZPlane, 0., dpy);
1663 fSeg2[0]->MorePads(fInput->DetElemId());
1664 fSeg2[0]->NextPad(fInput->DetElemId()))
1665 {
1666 ix=fSeg2[0]->Ix(); iy=fSeg2[0]->Iy();
1667 fSeg2[0]->GetPadC(fInput->DetElemId(), ix,iy,xdum,upper[1],zdum);
1668 if (icount ==0) lower[1]=upper[1];
1669 icount++;
1670 AliDebug(1,Form("\n upper lower %d %f %f", icount, upper[1], lower[1]));
1671 }
1672
1673 if (lower[1]>upper[1]) {xdum=lower[1]; lower[1]=upper[1]; upper[1]=xdum;}
1674
1675// step sizes
1676 static Double_t step[2]={0.00001, 0.0001};
1677
1678 clusterInput.Fitter()->mnparm(0,"x1",vstart[0],step[0],lower[0],upper[0],ierflag);
1679 clusterInput.Fitter()->mnparm(1,"y1",vstart[1],step[1],lower[1],upper[1],ierflag);
1680// ready for minimisation
1681 arglist[0]= -1;
1682 arglist[1]= 0;
1683
1684 clusterInput.Fitter()->mnexcm("SET NOGR", arglist, 0, ierflag);
1685 clusterInput.Fitter()->mnexcm("MIGRAD", arglist, 0, ierflag);
1686 // clusterInput.Fitter()->mnexcm("EXIT" , arglist, 0, ierflag);
1687 Double_t fmin, fedm, errdef;
1688 Int_t npari, nparx, istat;
1689
1690 clusterInput.Fitter()->mnstat(fmin, fedm, errdef, npari, nparx, istat);
1691 fFitStat=istat;
1692
1693// Print results
1694// Get fitted parameters
1695 Double_t xrec, yrec;
1696 TString chname;
1697 Double_t epxz, b1, b2;
1698 Int_t ierflg;
1699 clusterInput.Fitter()->mnpout(0, chname, xrec, epxz, b1, b2, ierflg);
1700 clusterInput.Fitter()->mnpout(1, chname, yrec, epxz, b1, b2, ierflg);
1701 fXFit[0]=xrec;
1702 fYFit[0]=yrec;
1703 return fmin;
1704}
1705
1706Bool_t AliMUONClusterFinderVS::DoubleMathiesonFit(AliMUONRawCluster * /*c*/, Int_t cath)
1707{
1708/// Performs a double Mathieson fit on one cathode
1709
1710//
1711// Initialise global variables for fit
1712 Double_t arglist[20];
1713 Int_t ierflag=0;
1714 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
1715 clusterInput.Fitter()->SetFCN(fcnS2);
1716 clusterInput.Fitter()->mninit(5,10,7);
1717 clusterInput.Fitter()->SetPrintLevel(-1 + AliLog::GetGlobalDebugLevel());
1718 arglist[0]=-1;
1719 clusterInput.Fitter()->mnexcm("SET NOW", arglist, 0, ierflag);
1720// Set starting values
1721 static Double_t vstart[5];
1722 vstart[0]=fX[fIndLocal[0][cath]][cath];
1723 vstart[1]=fY[fIndLocal[0][cath]][cath];
1724 vstart[2]=fX[fIndLocal[1][cath]][cath];
1725 vstart[3]=fY[fIndLocal[1][cath]][cath];
1726 vstart[4]=Float_t(fQ[fIndLocal[0][cath]][cath])/
1727 Float_t(fQ[fIndLocal[0][cath]][cath]+fQ[fIndLocal[1][cath]][cath]);
1728// lower and upper limits
1729 static Float_t lower[5], upper[5];
1730 Int_t isec;
1731
1732 isec=fSeg2[cath]->Sector(fInput->DetElemId(),fIx[fIndLocal[0][cath]][cath],
1733 fIy[fIndLocal[0][cath]][cath]);
1734 lower[0]=vstart[0]-fSeg2[cath]->Dpx(fInput->DetElemId(),isec);
1735 lower[1]=vstart[1]-fSeg2[cath]->Dpy(fInput->DetElemId(),isec);
1736
1737 upper[0]=lower[0]+2.*fSeg2[cath]->Dpx(fInput->DetElemId(),isec);
1738 upper[1]=lower[1]+2.*fSeg2[cath]->Dpy(fInput->DetElemId(),isec);
1739
1740 isec=fSeg2[cath]->Sector(fInput->DetElemId(),fIx[fIndLocal[1][cath]][cath],
1741 fIy[fIndLocal[1][cath]][cath]);
1742 lower[2]=vstart[2]-fSeg2[cath]->Dpx(fInput->DetElemId(),isec)/2;
1743 lower[3]=vstart[3]-fSeg2[cath]->Dpy(fInput->DetElemId(),isec)/2;
1744
1745 upper[2]=lower[2]+fSeg2[cath]->Dpx(fInput->DetElemId(),isec);
1746 upper[1]=lower[1]+2.*fSeg2[cath]->Dpy(fInput->DetElemId(),isec);
1747
1748
1749
1750 lower[4]=0.;
1751 upper[4]=1.;
1752// step sizes
1753 static Double_t step[5]={0.0005, 0.0005, 0.0005, 0.0005, 0.0001};
1754
1755 clusterInput.Fitter()->mnparm(0,"x1",vstart[0],step[0],lower[0],upper[0],ierflag);
1756 clusterInput.Fitter()->mnparm(1,"y1",vstart[1],step[1],lower[1],upper[1],ierflag);
1757 clusterInput.Fitter()->mnparm(2,"x2",vstart[2],step[2],lower[2],upper[2],ierflag);
1758 clusterInput.Fitter()->mnparm(3,"y2",vstart[3],step[3],lower[3],upper[3],ierflag);
1759 clusterInput.Fitter()->mnparm(4,"a0",vstart[4],step[4],lower[4],upper[4],ierflag);
1760// ready for minimisation
1761 arglist[0]= -1;
1762 arglist[1]= 0;
1763
1764 clusterInput.Fitter()->mnexcm("SET NOGR", arglist, 0, ierflag);
1765 clusterInput.Fitter()->mnexcm("MIGRAD", arglist, 0, ierflag);
1766 // clusterInput.Fitter()->mnexcm("EXIT" , arglist, 0, ierflag);
1767// Get fitted parameters
1768 Double_t xrec[2], yrec[2], qfrac;
1769 TString chname;
1770 Double_t epxz, b1, b2;
1771 Int_t ierflg;
1772 clusterInput.Fitter()->mnpout(0, chname, xrec[0], epxz, b1, b2, ierflg);
1773 clusterInput.Fitter()->mnpout(1, chname, yrec[0], epxz, b1, b2, ierflg);
1774 clusterInput.Fitter()->mnpout(2, chname, xrec[1], epxz, b1, b2, ierflg);
1775 clusterInput.Fitter()->mnpout(3, chname, yrec[1], epxz, b1, b2, ierflg);
1776 clusterInput.Fitter()->mnpout(4, chname, qfrac, epxz, b1, b2, ierflg);
1777
1778 Double_t fmin, fedm, errdef;
1779 Int_t npari, nparx, istat;
1780
1781 clusterInput.Fitter()->mnstat(fmin, fedm, errdef, npari, nparx, istat);
1782 fFitStat=istat;
1783 return kTRUE;
1784}
1785
1786Float_t AliMUONClusterFinderVS::CombiDoubleMathiesonFit(AliMUONRawCluster * /*c*/)
1787{
1788/// Perform combined double Mathieson fit on both cathode planes
1789
1790 Double_t arglist[20];
1791 Int_t ierflag=0;
1792 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
1793 clusterInput.Fitter()->SetFCN(fcnCombiS2);
1794 clusterInput.Fitter()->mninit(6,10,7);
1795 clusterInput.Fitter()->SetPrintLevel(-1 + AliLog::GetGlobalDebugLevel());
1796 arglist[0]=-1;
1797 clusterInput.Fitter()->mnexcm("SET NOW", arglist, 0, ierflag);
1798// Set starting values
1799 static Double_t vstart[6];
1800 vstart[0]=fXInit[0];
1801 vstart[1]=fYInit[0];
1802 vstart[2]=fXInit[1];
1803 vstart[3]=fYInit[1];
1804 vstart[4]=fQrInit[0];
1805 vstart[5]=fQrInit[1];
1806// lower and upper limits
1807 static Float_t lower[6], upper[6];
1808 Int_t ix,iy,isec;
1809 Float_t dpx, dpy;
1810
1811 fSeg2[1]->GetPadI(fInput->DetElemId(),fXInit[0], fYInit[0], fZPlane, ix, iy);
1812 isec=fSeg2[1]->Sector(fInput->DetElemId(),ix, iy);
1813 dpx=fSeg2[1]->Dpx(fInput->DetElemId(), isec);
1814
1815 fSeg2[0]->GetPadI(fInput->DetElemId(), fXInit[0], fYInit[0], fZPlane, ix, iy);
1816 isec=fSeg2[0]->Sector(fInput->DetElemId(), ix, iy);
1817 dpy=fSeg2[0]->Dpy(fInput->DetElemId(), isec);
1818
1819
1820
1821 Int_t icount;
1822 Float_t xdum, ydum, zdum;
1823 AliDebug(1,Form("\n Cluster Finder: %f %f %f %f ", fXInit[0], fXInit[1],fYInit[0], fYInit[1] ));
1824
1825 // Find save upper and lower limits
1826 icount = 0;
1827
1828 for (fSeg2[1]->FirstPad(fInput->DetElemId(),fXInit[0], fYInit[0], fZPlane, dpx, 0.);
1829 fSeg2[1]->MorePads(fInput->DetElemId());
1830 fSeg2[1]->NextPad(fInput->DetElemId()))
1831 {
1832 ix=fSeg2[1]->Ix(); iy=fSeg2[1]->Iy();
1833 // if (fDigitMap[1]->TestHit(ix, iy) == kEmpty) continue;
1834 fSeg2[1]->GetPadC(fInput->DetElemId(),ix,iy,upper[0],ydum,zdum);
1835 if (icount ==0) lower[0]=upper[0];
1836 icount++;
1837 }
1838 if (lower[0]>upper[0]) {xdum=lower[0]; lower[0]=upper[0]; upper[0]=xdum;}
1839 // vstart[0] = 0.5*(lower[0]+upper[0]);
1840
1841
1842 icount=0;
1843
1844 for (fSeg2[0]->FirstPad(fInput->DetElemId(),fXInit[0], fYInit[0], fZPlane, 0., dpy);
1845 fSeg2[0]->MorePads(fInput->DetElemId());
1846 fSeg2[0]->NextPad(fInput->DetElemId()))
1847 {
1848 ix=fSeg2[0]->Ix(); iy=fSeg2[0]->Iy();
1849 // if (fDigitMap[0]->TestHit(ix, iy) == kEmpty) continue;
1850 fSeg2[0]->GetPadC(fInput->DetElemId(),ix,iy,xdum,upper[1],zdum);
1851 if (icount ==0) lower[1]=upper[1];
1852 icount++;
1853 }
1854
1855 if (lower[1]>upper[1]) {xdum=lower[1]; lower[1]=upper[1]; upper[1]=xdum;}
1856 // vstart[1] = 0.5*(lower[1]+upper[1]);
1857
1858
1859 fSeg2[1]->GetPadI(fInput->DetElemId(),fXInit[1], fYInit[1], fZPlane, ix, iy);
1860 isec=fSeg2[1]->Sector(fInput->DetElemId(),ix, iy);
1861 dpx=fSeg2[1]->Dpx(fInput->DetElemId(),isec);
1862 fSeg2[0]->GetPadI(fInput->DetElemId(),fXInit[1], fYInit[1], fZPlane, ix, iy);
1863 isec=fSeg2[0]->Sector(fInput->DetElemId(),ix, iy);
1864 dpy=fSeg2[0]->Dpy(fInput->DetElemId(),isec);
1865
1866
1867 // Find save upper and lower limits
1868
1869 icount=0;
1870
1871 for (fSeg2[1]->FirstPad(fInput->DetElemId(),fXInit[1], fYInit[1], fZPlane, dpx, 0);
1872 fSeg2[1]->MorePads(fInput->DetElemId());
1873 fSeg2[1]->NextPad(fInput->DetElemId()))
1874 {
1875 ix=fSeg2[1]->Ix(); iy=fSeg2[1]->Iy();
1876 // if (fDigitMap[1]->TestHit(ix, iy) == kEmpty) continue;
1877 fSeg2[1]->GetPadC(fInput->DetElemId(),ix,iy,upper[2],ydum,zdum);
1878 if (icount ==0) lower[2]=upper[2];
1879 icount++;
1880 }
1881 if (lower[2]>upper[2]) {xdum=lower[2]; lower[2]=upper[2]; upper[2]=xdum;}
1882 // vstart[2] = 0.5*(lower[2]+upper[2]);
1883
1884 icount=0;
1885
1886 for (fSeg2[0]->FirstPad(fInput->DetElemId(),fXInit[1], fYInit[1], fZPlane, 0, dpy);
1887 fSeg2[0]-> MorePads(fInput->DetElemId());
1888 fSeg2[0]->NextPad(fInput->DetElemId()))
1889 {
1890 ix=fSeg2[0]->Ix(); iy=fSeg2[0]->Iy();
1891 // if (fDigitMap[0]->TestHit(ix, iy) != kEmpty) continue;
1892
1893 fSeg2[0]->GetPadC(fInput->DetElemId(),ix,iy,xdum,upper[3],zdum);
1894 if (icount ==0) lower[3]=upper[3];
1895 icount++;
1896
1897 }
1898 if (lower[3]>upper[3]) {xdum=lower[3]; lower[3]=upper[3]; upper[3]=xdum;}
1899
1900 lower[4]=0.;
1901 upper[4]=1.;
1902 lower[5]=0.;
1903 upper[5]=1.;
1904
1905// step sizes
1906 static Double_t step[6]={0.0005, 0.0005, 0.0005, 0.0005, 0.001, 0.001};
1907 clusterInput.Fitter()->mnparm(0,"x1",vstart[0],step[0],lower[0],upper[0],ierflag);
1908 clusterInput.Fitter()->mnparm(1,"y1",vstart[1],step[1],lower[1],upper[1],ierflag);
1909 clusterInput.Fitter()->mnparm(2,"x2",vstart[2],step[2],lower[2],upper[2],ierflag);
1910 clusterInput.Fitter()->mnparm(3,"y2",vstart[3],step[3],lower[3],upper[3],ierflag);
1911 clusterInput.Fitter()->mnparm(4,"a0",vstart[4],step[4],lower[4],upper[4],ierflag);
1912 clusterInput.Fitter()->mnparm(5,"a1",vstart[5],step[5],lower[5],upper[5],ierflag);
1913// ready for minimisation
1914 arglist[0]= -1;
1915 arglist[1]= 0;
1916
1917 clusterInput.Fitter()->mnexcm("SET NOGR", arglist, 0, ierflag);
1918 clusterInput.Fitter()->mnexcm("MIGRAD", arglist, 0, ierflag);
1919 // clusterInput.Fitter()->mnexcm("EXIT" , arglist, 0, ierflag);
1920// Get fitted parameters
1921 TString chname;
1922 Double_t epxz, b1, b2;
1923 Int_t ierflg;
1924 clusterInput.Fitter()->mnpout(0, chname, fXFit[0], epxz, b1, b2, ierflg);
1925 clusterInput.Fitter()->mnpout(1, chname, fYFit[0], epxz, b1, b2, ierflg);
1926 clusterInput.Fitter()->mnpout(2, chname, fXFit[1], epxz, b1, b2, ierflg);
1927 clusterInput.Fitter()->mnpout(3, chname, fYFit[1], epxz, b1, b2, ierflg);
1928 clusterInput.Fitter()->mnpout(4, chname, fQrFit[0], epxz, b1, b2, ierflg);
1929 clusterInput.Fitter()->mnpout(5, chname, fQrFit[1], epxz, b1, b2, ierflg);
1930
1931 Double_t fmin, fedm, errdef;
1932 Int_t npari, nparx, istat;
1933
1934 clusterInput.Fitter()->mnstat(fmin, fedm, errdef, npari, nparx, istat);
1935 fFitStat=istat;
1936
1937 fChi2[0]=fmin;
1938 fChi2[1]=fmin;
1939 return fmin;
1940}
1941
1942void AliMUONClusterFinderVS::Split(AliMUONRawCluster* c)
1943{
1944/// One cluster for each maximum
1945
1946 Int_t i, j, cath;
1947 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
1948 for (j=0; j<2; j++) {
1949 AliMUONRawCluster cnew;
1950 cnew.SetGhost(c->GetGhost());
1951 for (cath=0; cath<2; cath++) {
1952 cnew.SetChi2(cath,fChi2[0]);
1953 // ?? why not cnew.fChi2[cath]=fChi2[cath];
1954
1955 if (fNPeaks == 0) {
1956 cnew.SetNcluster(0,-1);
1957 cnew.SetNcluster(1,fNRawClusters);
1958 } else {
1959 cnew.SetNcluster(0,fNPeaks);
1960 cnew.SetNcluster(1,0);
1961 }
1962 cnew.SetMultiplicity(cath,0);
1963 cnew.SetX(cath, Float_t(fXFit[j]));
1964 cnew.SetY(cath, Float_t(fYFit[j]));
1965 cnew.SetZ(cath, fZPlane);
1966 if (j==0) {
1967 cnew.SetCharge(cath, Int_t(clusterInput.TotalCharge(cath)*fQrFit[cath]));
1968 } else {
1969 cnew.SetCharge(cath, Int_t(clusterInput.TotalCharge(cath)*(1-fQrFit[cath])));
1970 }
1971 fSeg2[cath]->SetHit(fInput->DetElemId(), fXFit[j],fYFit[j],fZPlane);
1972
1973 for (i=0; i<fMul[cath]; i++) {
1974 Float_t q1;
1975 cnew.SetIndex(cnew.GetMultiplicity(cath), cath, c->GetIndex(i,cath));
1976
1977 fSeg2[cath]->SetPad(fInput->DetElemId(),fIx[i][cath], fIy[i][cath]);
1978 q1 = fInput->Mathieson()->IntXY(fInput->DetElemId(),fSeg2[cath]);
1979
1980 cnew.SetContrib(i, cath, q1*Float_t(cnew.GetCharge(cath))/Float_t(fQ[i][cath]));
1981 cnew.SetMultiplicity(cath, cnew.GetMultiplicity(cath)+1 );
1982 }
1983 FillCluster(&cnew,0,cath);
1984 } // cathode loop
1985 cnew.SetClusterType(cnew.PhysicsContribution());
1986 if (cnew.GetCharge(0)>0 && cnew.GetCharge(1)>0) AddRawCluster(cnew);
1987 fNPeaks++;
1988 }
1989}
1990void AliMUONClusterFinderVS::AddRawCluster(AliMUONRawCluster& c)
1991{
1992/// Add a raw cluster copy to the list
1993
1994 // Setting detection element in raw cluster for alignment
1995 // BB 19/05/05
1996 c.SetDetElemId(fInput->DetElemId());
1997
1998 TClonesArray &lrawcl = *fRawClusters;
1999 new(lrawcl[fNRawClusters++]) AliMUONRawCluster(c);
2000 AliDebug(1,Form("\nfNRawClusters %d\n",fNRawClusters));
2001}
2002
2003AliMUONClusterFinderVS& AliMUONClusterFinderVS
2004::operator = (const AliMUONClusterFinderVS& rhs)
2005{
2006// Protected assignement operator
2007
2008 if (this == &rhs) return *this;
2009
2010 AliFatal("Not implemented.");
2011
2012 return *this;
2013}
2014
2015//
2016// Minimisation functions
2017// Single Mathieson
2018void fcnS1(Int_t & /*npar*/, Double_t * /*gin*/, Double_t &f, Double_t *par, Int_t /*iflag*/)
2019{
2020 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
2021 Int_t i;
2022 Float_t delta;
2023 Float_t chisq=0;
2024 Float_t qcont=0;
2025 Float_t qtot=0;
2026
2027 for (i=0; i<clusterInput.Nmul(0); i++) {
2028 Float_t q0=clusterInput.Charge(i,0);
2029 Float_t q1=clusterInput.DiscrChargeS1(i,par);
2030 delta=(q0-q1)/q0;
2031 chisq+=delta*delta;
2032 qcont+=q1;
2033 qtot+=q0;
2034 }
2035 f=chisq;
2036}
2037
2038void fcnCombiS1(Int_t & /*npar*/, Double_t * /*gin*/, Double_t &f, Double_t *par, Int_t /*iflag*/)
2039{
2040 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
2041 Int_t i, cath;
2042 Float_t delta;
2043 Float_t chisq=0;
2044 Float_t qcont=0;
2045 Float_t qtot=0;
2046
2047 for (cath=0; cath<2; cath++) {
2048 for (i=0; i<clusterInput.Nmul(cath); i++) {
2049 Float_t q0=clusterInput.Charge(i,cath);
2050 Float_t q1=clusterInput.DiscrChargeCombiS1(i,par,cath);
2051 delta=(q0-q1)/q0;
2052 chisq+=delta*delta;
2053 qcont+=q1;
2054 qtot+=q0;
2055 }
2056 }
2057 f=chisq;
2058}
2059
2060// Double Mathieson
2061void fcnS2(Int_t & /*npar*/, Double_t * /*gin*/, Double_t &f, Double_t *par, Int_t /*iflag*/)
2062{
2063 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
2064 Int_t i;
2065 Float_t delta;
2066 Float_t chisq=0;
2067 Float_t qcont=0;
2068 Float_t qtot=0;
2069
2070 for (i=0; i<clusterInput.Nmul(0); i++) {
2071
2072 Float_t q0=clusterInput.Charge(i,0);
2073 Float_t q1=clusterInput.DiscrChargeS2(i,par);
2074 delta=(q0-q1)/q0;
2075 chisq+=delta*delta;
2076 qcont+=q1;
2077 qtot+=q0;
2078 }
2079 f=chisq;
2080}
2081
2082// Double Mathieson
2083void fcnCombiS2(Int_t & /*npar*/, Double_t * /*gin*/, Double_t &f, Double_t *par, Int_t /*iflag*/)
2084{
2085 AliMUONClusterInput& clusterInput = *(AliMUONClusterInput::Instance());
2086 Int_t i, cath;
2087 Float_t delta;
2088 Float_t chisq=0;
2089 Float_t qcont=0;
2090 Float_t qtot=0;
2091 for (cath=0; cath<2; cath++) {
2092 for (i=0; i<clusterInput.Nmul(cath); i++) {
2093 Float_t q0=clusterInput.Charge(i,cath);
2094 Float_t q1=clusterInput.DiscrChargeCombiS2(i,par,cath);
2095 delta=(q0-q1)/q0;
2096 chisq+=delta*delta;
2097 qcont+=q1;
2098 qtot+=q0;
2099 }
2100 }
2101 f=chisq;
2102}