1 /**************************************************************************
2 * Copyright(c) 2007-2009, 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 **************************************************************************/
16 #include "AliITSRecoParam.h"
20 ///////////////////////////////////////////////////////////////////////////////
22 // Class with ITS reconstruction parameters //
23 // Origin: andrea.dainese@lnl.infn.it //
25 ///////////////////////////////////////////////////////////////////////////////
29 ClassImp(AliITSRecoParam)
31 const Int_t AliITSRecoParam::fgkLayersNotToSkip[AliITSgeomTGeo::kNLayers]={0,0,0,0,0,0};
32 const Int_t AliITSRecoParam::fgkLastLayerToTrackTo=0;
33 const Int_t AliITSRecoParam::fgkMaxDetectorPerLayer=1000;
34 const Double_t AliITSRecoParam::fgkriw=80.0;
35 const Double_t AliITSRecoParam::fgkdiw=0.0053;
36 const Double_t AliITSRecoParam::fgkX0iw=30.0;
37 const Double_t AliITSRecoParam::fgkrcd=61.0;
38 const Double_t AliITSRecoParam::fgkdcd=0.0053;
39 const Double_t AliITSRecoParam::fgkX0cd=30.0;
40 const Double_t AliITSRecoParam::fgkyr=12.8;
41 const Double_t AliITSRecoParam::fgkdr=0.03;
42 const Double_t AliITSRecoParam::fgkzm=0.2;
43 const Double_t AliITSRecoParam::fgkdm=0.40;
44 const Double_t AliITSRecoParam::fgkrs=50.0;
45 const Double_t AliITSRecoParam::fgkds=0.001;
46 const Double_t AliITSRecoParam::fgkrInsideITSscreen=49.0;
47 const Double_t AliITSRecoParam::fgkrInsideSPD1=3.7;
48 const Double_t AliITSRecoParam::fgkrPipe=3.;
49 const Double_t AliITSRecoParam::fgkrInsidePipe=2.7;
50 const Double_t AliITSRecoParam::fgkrOutsidePipe=3.3;
51 const Double_t AliITSRecoParam::fgkdPipe=0.0028;
52 const Double_t AliITSRecoParam::fgkrInsideShield[2]={7.5,25.0};
53 const Double_t AliITSRecoParam::fgkrOutsideShield[2]={10.5,30.0};
54 const Double_t AliITSRecoParam::fgkdshield[2]={0.0097,0.0034};
55 const Double_t AliITSRecoParam::fgkX0shield[2]={38.6,42.0};
56 const Double_t AliITSRecoParam::fgkX0Air=21.82;
57 const Double_t AliITSRecoParam::fgkX0Be=65.19;
58 const Double_t AliITSRecoParam::fgkBoundaryWidth=0.2;
59 const Double_t AliITSRecoParam::fgkDeltaXNeighbDets=0.5;
60 const Double_t AliITSRecoParam::fgkSPDdetzlength=6.960; // 7.072-2*0.056
61 const Double_t AliITSRecoParam::fgkSPDdetxlength=1.298; // 1.410-2*0.056
63 //_____________________________________________________________________________
64 AliITSRecoParam::AliITSRecoParam() : AliDetectorRecoParam(),
72 fVtxr3DZCutNarrow(0.),
73 fVtxr3DRCutNarrow(0.),
74 fVtxr3DPhiCutLoose(0.),
75 fVtxr3DPhiCutTight(0.),
78 fNSigmaYLayerForRoadY(0),
80 fNSigmaZLayerForRoadZ(0),
87 fMaxNormChi2NonCForHypothesis(0),
100 fMaxDZToUseConstraint(0),
101 fMaxDforV0dghtrForProlongation(0),
102 fMaxDForProlongation(0),
103 fMaxDZForProlongation(0),
104 fMinPtForProlongation(0),
105 fAddVirtualClustersInDeadZone(kFALSE),
107 fSigmaXDeadZoneHit2(0),
108 fSigmaZDeadZoneHit2(0),
109 fXPassDeadZoneHits(0),
110 fUseTGeoInTracker(3),
111 fAllowSharedClusters(kTRUE),
112 fClusterErrorsParam(1),
113 fComputePlaneEff(kFALSE),
114 fHistoPlaneEff(kFALSE),
116 fReadPlaneEffFromOCDB(kFALSE),
118 fMaxMissingClustersPlaneEff(0),
119 fRequireClusterInOuterLayerPlaneEff(kFALSE),
120 fRequireClusterInInnerLayerPlaneEff(kFALSE),
121 fOnlyConstraintPlaneEff(kFALSE),
122 fExtendedEtaAcceptance(kFALSE),
123 fUseBadZonesFromOCDB(kTRUE),
124 fUseSingleBadChannelsFromOCDB(kFALSE),
125 fMinFractionOfBadInRoad(0),
126 fAllowProlongationWithEmptyRoad(kFALSE),
127 fOuterStartLayerSA(0),
128 fFactorSAWindowSizes(1.),
134 fSAOnePointTracks(kFALSE),
135 fSAUseAllClusters(kFALSE),
137 fUseUnfoldingInClusterFinderSPD(kFALSE),
138 fUseUnfoldingInClusterFinderSDD(kTRUE),
139 fUseUnfoldingInClusterFinderSSD(kTRUE),
140 fUseChargeMatchingInClusterFinderSSD(kTRUE),
141 fTrackleterOnlyOneTrackletPerC2(kTRUE),
142 fTrackleterPhiWindow(0.08),
143 fTrackleterZetaWindow(1.00),
144 fTrackleterRemoveClustersFromOverlaps(kFALSE),
145 fTrackleterPhiOverlapCut(0.005),
146 fTrackleterZetaOverlapCut(0.05),
147 fUseCosmicRunShiftsSSD(kFALSE)
155 SetLayersParameters();
156 for(Int_t i=0; i<AliITSgeomTGeo::kNLayers; i++) fLayersToSkip[i]=0;
157 SetUseTGeoInTracker(3);
158 SetAllowSharedClusters(kTRUE);
160 SetAddVirtualClustersInDeadZone(kFALSE);
161 SetUseAmplitudeInfo(kTRUE);
162 SetClusterErrorsParam(1);
163 SetClusterMisalError(0.);
164 SetVertexer3DDefaults();
166 //_____________________________________________________________________________
167 AliITSRecoParam::~AliITSRecoParam()
173 //_____________________________________________________________________________
174 AliITSRecoParam *AliITSRecoParam::GetHighFluxParam()
177 // make default reconstruction parameters for hig flux env.
179 AliITSRecoParam *param = new AliITSRecoParam();
180 param->SetVertexerZ();
182 param->fMaxSnp = 0.95;
184 param->fNSigmaYLayerForRoadY = 4.;
185 param->fNSigmaRoadY = 7.5;
186 param->fNSigmaZLayerForRoadZ = 4.;
187 param->fNSigmaRoadZ = 7.5;
189 param->fNSigma2RoadZC = 60.; //7.75^2
190 param->fNSigma2RoadYC = 60.; //7.75^2
191 param->fNSigma2RoadZNonC = 50.; //7.07^2
192 param->fNSigma2RoadYNonC = 50.; //7.07^2
194 param->fMaxChi2PerCluster[0] = 11.; //7
195 param->fMaxChi2PerCluster[1] = 12.; //5
196 param->fMaxChi2PerCluster[2] = 12.; //8
197 param->fMaxChi2PerCluster[3] = 5.; //8
198 param->fMaxChi2PerCluster[4] = 12.; //6.5
200 param->fMaxNormChi2NonC[0] = 7.;
201 param->fMaxNormChi2NonC[1] = 8.;
202 param->fMaxNormChi2NonC[2] = 8.;
203 param->fMaxNormChi2NonC[3] = 11.;
204 param->fMaxNormChi2NonC[4] = 14.;
205 param->fMaxNormChi2NonC[5] = 25.;
207 param->fMaxNormChi2C[0] = 11.;
208 param->fMaxNormChi2C[1] = 13.;
209 param->fMaxNormChi2C[2] = 15.;
210 param->fMaxNormChi2C[3] = 18.;
211 param->fMaxNormChi2C[4] = 30.;
212 param->fMaxNormChi2C[5] = 35.;
214 param->fMaxNormChi2NonCForHypothesis = 7.;
216 param->fMaxChi2 = 35.;
218 param->fMaxChi2s[0] = 25.; //40
219 param->fMaxChi2s[1] = 25.; //40
220 param->fMaxChi2s[2] = 25.; //40
221 param->fMaxChi2s[3] = 25.; //40
222 param->fMaxChi2s[4] = 40.; //40
223 param->fMaxChi2s[5] = 50.; //40
225 param->fMaxRoad = 6.;
228 param->fMaxChi2In = 16.;
230 param->fMaxChi2sR[0] = 10.;
231 param->fMaxChi2sR[1] = 10.;
232 param->fMaxChi2sR[2] = 10.;
233 param->fMaxChi2sR[3] = 10.;
234 param->fMaxChi2sR[4] = 30.;
235 param->fMaxChi2sR[5] = 40.;
237 param->fChi2PerCluster = 9.;
243 param->fSigmaXV = 0.0050;
244 param->fSigmaYV = 0.0050;
245 param->fSigmaZV = 0.0100;
247 param->fVertexCut = 25.;
249 param->fMaxDZforPrimTrk = 0.4;
250 param->fMaxDZToUseConstraint = 3.;
252 param->fMaxDforV0dghtrForProlongation = 30.;
253 param->fMaxDForProlongation = 40.;//10.;
254 param->fMaxDZForProlongation = 60.;//20.;
255 param->fMinPtForProlongation = 0.120;
257 param->fZWindowDeadZone = 2.0;
258 param->fSigmaXDeadZoneHit2 = 0.004/12.;
259 param->fSigmaZDeadZoneHit2 = 0.001/12.;
260 param->fXPassDeadZoneHits = 0.018;
264 //_____________________________________________________________________________
265 AliITSRecoParam *AliITSRecoParam::GetLowFluxParam()
268 // make default reconstruction parameters for low flux env.
270 AliITSRecoParam *param = new AliITSRecoParam();
271 param->SetVertexer3DDefaults();
273 param->fMaxSnp = 0.95;
275 param->fNSigmaYLayerForRoadY = 4.;
276 param->fNSigmaRoadY = 7.5;
277 param->fNSigmaZLayerForRoadZ = 4.;
278 param->fNSigmaRoadZ = 7.5;
280 param->fNSigma2RoadZC = 60.; //7.75^2
281 param->fNSigma2RoadYC = 60.; //7.75^2
282 param->fNSigma2RoadZNonC = 50.; //7.07^2
283 param->fNSigma2RoadYNonC = 50.; //7.07^2
285 param->fMaxChi2PerCluster[0] = 11.; //7
286 param->fMaxChi2PerCluster[1] = 12.; //5
287 param->fMaxChi2PerCluster[2] = 12.; //8
288 param->fMaxChi2PerCluster[3] = 5.; //8
289 param->fMaxChi2PerCluster[4] = 12.; //6.5
291 param->fMaxNormChi2NonC[0] = 7.;
292 param->fMaxNormChi2NonC[1] = 8.;
293 param->fMaxNormChi2NonC[2] = 8.;
294 param->fMaxNormChi2NonC[3] = 11.;
295 param->fMaxNormChi2NonC[4] = 14.;
296 param->fMaxNormChi2NonC[5] = 25.;
298 param->fMaxNormChi2C[0] = 11.;
299 param->fMaxNormChi2C[1] = 13.;
300 param->fMaxNormChi2C[2] = 15.;
301 param->fMaxNormChi2C[3] = 18.;
302 param->fMaxNormChi2C[4] = 30.;
303 param->fMaxNormChi2C[5] = 35.;
305 param->fMaxNormChi2NonCForHypothesis = 7.;
307 param->fMaxChi2 = 35.;
309 param->fMaxChi2s[0] = 25.; //40
310 param->fMaxChi2s[1] = 25.; //40
311 param->fMaxChi2s[2] = 25.; //40
312 param->fMaxChi2s[3] = 25.; //40
313 param->fMaxChi2s[4] = 40.; //40
314 param->fMaxChi2s[5] = 50.; //40
316 param->fMaxRoad = 6.;
319 param->fMaxChi2In = 16.;
321 param->fMaxChi2sR[0] = 10.;
322 param->fMaxChi2sR[1] = 10.;
323 param->fMaxChi2sR[2] = 10.;
324 param->fMaxChi2sR[3] = 10.;
325 param->fMaxChi2sR[4] = 30.;
326 param->fMaxChi2sR[5] = 40.;
328 param->fChi2PerCluster = 9.;
334 param->fSigmaXV = 0.0050;
335 param->fSigmaYV = 0.0050;
336 param->fSigmaZV = 0.0100;
338 param->fVertexCut = 25.;
340 param->fMaxDZforPrimTrk = 0.4;
341 param->fMaxDZToUseConstraint = 3.;
343 param->fMaxDforV0dghtrForProlongation = 30.;
344 param->fMaxDForProlongation = 40.;//10.;
345 param->fMaxDZForProlongation = 60.;//20.;
346 param->fMinPtForProlongation = 0.120;
348 param->fZWindowDeadZone = 2.0;
349 param->fSigmaXDeadZoneHit2 = 0.004/12.;
350 param->fSigmaZDeadZoneHit2 = 0.001/12.;
351 param->fXPassDeadZoneHits = 0.018;
352 param->SetNLoopsSA(10);
356 //_____________________________________________________________________________
357 AliITSRecoParam *AliITSRecoParam::GetCosmicTestParam()
360 // make default reconstruction parameters for cosmics
362 AliITSRecoParam *param = new AliITSRecoParam();
364 // vertexer for cosmics
365 param->SetVertexer(2);
367 // find independently ITS SA tracks
368 param->SetSAUseAllClusters();
369 param->SetOuterStartLayerSA(AliITSgeomTGeo::GetNLayers()-2);
371 // larger seach windows for SA (in case of large misalignments)
372 param->SetFactorSAWindowSizes(3.);
374 param->fMaxSnp = 0.95;
376 param->fNSigmaYLayerForRoadY = 4.;
377 param->fNSigmaRoadY = 7.5;
378 param->fNSigmaZLayerForRoadZ = 4.;
379 param->fNSigmaRoadZ = 7.5;
381 param->fNSigma2RoadZC = 60.; //7.75^2
382 param->fNSigma2RoadYC = 60.; //7.75^2
383 param->fNSigma2RoadZNonC = 50.; //7.07^2
384 param->fNSigma2RoadYNonC = 50.; //7.07^2
386 param->fMaxChi2PerCluster[0] = 11.; //7
387 param->fMaxChi2PerCluster[1] = 12.; //5
388 param->fMaxChi2PerCluster[2] = 12.; //8
389 param->fMaxChi2PerCluster[3] = 5.; //8
390 param->fMaxChi2PerCluster[4] = 12.; //6.5
392 param->fMaxNormChi2NonC[0] = 7.;
393 param->fMaxNormChi2NonC[1] = 8.;
394 param->fMaxNormChi2NonC[2] = 8.;
395 param->fMaxNormChi2NonC[3] = 11.;
396 param->fMaxNormChi2NonC[4] = 14.;
397 param->fMaxNormChi2NonC[5] = 25.;
399 param->fMaxNormChi2C[0] = 11.;
400 param->fMaxNormChi2C[1] = 13.;
401 param->fMaxNormChi2C[2] = 15.;
402 param->fMaxNormChi2C[3] = 18.;
403 param->fMaxNormChi2C[4] = 30.;
404 param->fMaxNormChi2C[5] = 35.;
406 param->fMaxNormChi2NonCForHypothesis = 7.;
408 param->fMaxChi2 = 35.;
410 param->fMaxChi2s[0] = 25.; //40
411 param->fMaxChi2s[1] = 25.; //40
412 param->fMaxChi2s[2] = 25.; //40
413 param->fMaxChi2s[3] = 25.; //40
414 param->fMaxChi2s[4] = 40.; //40
415 param->fMaxChi2s[5] = 50.; //40
417 param->fMaxRoad = 6.;
420 param->fMaxChi2In = 16.;
422 param->fMaxChi2sR[0] = 10.;
423 param->fMaxChi2sR[1] = 10.;
424 param->fMaxChi2sR[2] = 10.;
425 param->fMaxChi2sR[3] = 10.;
426 param->fMaxChi2sR[4] = 30.;
427 param->fMaxChi2sR[5] = 40.;
429 param->fChi2PerCluster = 9.;
435 param->fSigmaXV = 0.0050;
436 param->fSigmaYV = 0.0050;
437 param->fSigmaZV = 0.0100;
439 param->fVertexCut = 25.;
441 param->fMaxDZforPrimTrk = 0.4;
442 param->fMaxDZToUseConstraint = 3.;
444 param->fMaxDforV0dghtrForProlongation = 30.;
445 param->fMaxDForProlongation = 10.;
446 param->fMaxDZForProlongation = 20.;
447 param->fMinPtForProlongation = 0.120;
449 param->fZWindowDeadZone = 2.0;
450 param->fSigmaXDeadZoneHit2 = 0.004/12.;
451 param->fSigmaZDeadZoneHit2 = 0.001/12.;
452 param->fXPassDeadZoneHits = 0.018;
457 //_____________________________________________________________________________
458 AliITSRecoParam *AliITSRecoParam::GetPlaneEffParam(Int_t i)
461 // make special reconstruction parameters for Plane Efficiency study on layer i
463 if (i<0 || i>=AliITSgeomTGeo::kNLayers) {
464 printf("AliITSRecoParam::GetPlaneEffParam: index of ITS Plane not in the range [0,5]\n");
465 printf("returning null pointer");
468 AliITSRecoParam *param;
469 param = GetHighFluxParam();
470 param->SetComputePlaneEff();
471 param->SetLayerToSkip(i);
472 param->SetIPlanePlaneEff(i);
473 // optimized setting for SPD0 (i==0)
475 param->fMinPtPlaneEff = 0.200; // high pt particles
476 param->fMaxMissingClustersPlaneEff = 1; // at most 1 layer out of 5 without cluster
477 param->fRequireClusterInOuterLayerPlaneEff = kTRUE; // cluster on SPD1 must be
478 //param->fOnlyConstraintPlaneEff = kTRUE;
481 param->fMinPtPlaneEff = 0.200; // high pt particles
482 param->fMaxMissingClustersPlaneEff = 1; // at most 1 layer out of 5 without cluster
483 param->fRequireClusterInOuterLayerPlaneEff = kTRUE;
484 //param->fOnlyConstraintPlaneEff = kTRUE;
487 param->fMinPtPlaneEff = 0.200; // high pt particles
488 param->fMaxMissingClustersPlaneEff = 0; // at most 1 layer out of 5 without cluster
489 param->fRequireClusterInOuterLayerPlaneEff = kTRUE;
490 //param->fOnlyConstraintPlaneEff = kTRUE;
493 param->fMinPtPlaneEff = 0.200; // high pt particles
498 //_____________________________________________________________________________
499 void AliITSRecoParam::SetLayersParameters()
502 // number of layers and layers spatial resolutions
505 // spatial resolutions of the detectors
506 // y: 12 12 38 38 20 20 micron
509 fSigmaY2[2]=1.444e-5;
510 fSigmaY2[3]=1.444e-5;
513 // z: 120 120 28 28 830 830 micron
518 fSigmaZ2[4]=6.889e-3;
519 fSigmaZ2[5]=6.889e-3;
523 //_____________________________________________________________________________
524 void AliITSRecoParam::PrintParameters() const
530 printf("============================= AliITSRecoParam::PrintParameters ");
531 printf("============================= \n\n");
532 for(Int_t i=0; i<AliITSgeomTGeo::kNLayers; i++) {
533 if(!fLayersToSkip[i]) {
534 printf("ITS Traking: using layer %d\n",i);
536 printf("ITS Traking: skipping layer %d\n",i);
539 for(Int_t i=0; i<AliITSgeomTGeo::kNLayers; i++) {
540 if(fUseAmplitudeInfo[i]) {
541 printf("ITS Traking: use amplitude info for layer %d\n",i);
543 printf("ITS Traking: don't use amplitude info for layer %d\n",i);
546 for(Int_t i=0; i<AliITSgeomTGeo::kNLayers; i++)
547 printf("Layer %d:\n sigmaY2 %f, sigmaZ2 %f\n sigmaMisalY %f, sigmaMisalZ %f\n max norm chi2 for non constrained tracks %f\n max norm chi2 for constrained tracks %f\n max predicted chi2 (cluster & track prol.) %f\n",i,fSigmaY2[i],fSigmaZ2[i],fClusterMisalErrorY[i],fClusterMisalErrorZ[i],fMaxNormChi2NonC[i],fMaxNormChi2C[i],fMaxChi2s[i]);