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1 | /************************************************************************** |
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2 | * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. * |
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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 | |
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16 | #include "AliITSRecoParam.h" |
17 | |
18 | /* $Id$ */ |
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19 | |
20 | /////////////////////////////////////////////////////////////////////////////// |
21 | // // |
22 | // Class with ITS reconstruction parameters // |
23 | // Origin: andrea.dainese@lnl.infn.it // |
24 | // // |
25 | /////////////////////////////////////////////////////////////////////////////// |
26 | |
27 | |
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28 | |
29 | ClassImp(AliITSRecoParam) |
30 | |
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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 |
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62 | |
63 | //_____________________________________________________________________________ |
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64 | AliITSRecoParam::AliITSRecoParam() : TObject(), |
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65 | fMaxSnp(1.), |
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66 | fNSigmaYLayerForRoadY(0), |
67 | fNSigmaRoadY(0), |
68 | fNSigmaZLayerForRoadZ(0), |
69 | fNSigmaRoadZ(0), |
70 | fNSigma2RoadZC(0), |
71 | fNSigma2RoadYC(0), |
72 | fNSigma2RoadZNonC(0), |
73 | fNSigma2RoadYNonC(0), |
74 | fMaxNormChi2NonCForHypothesis(0), |
75 | fMaxChi2(0), |
76 | fMaxRoad(0), |
77 | fMaxChi2In(0), |
78 | fChi2PerCluster(0), |
79 | fXV(0), |
80 | fYV(0), |
81 | fZV(0), |
82 | fSigmaXV(0), |
83 | fSigmaYV(0), |
84 | fSigmaZV(0), |
85 | fVertexCut(0), |
86 | fMaxDZforPrimTrk(0), |
87 | fMaxDZToUseConstraint(0), |
88 | fMaxDforV0dghtrForProlongation(0), |
89 | fMaxDForProlongation(0), |
90 | fMaxDZForProlongation(0), |
91 | fMinPtForProlongation(0), |
92 | fAddVirtualClustersInDeadZone(kTRUE), |
93 | fZWindowDeadZone(0), |
94 | fSigmaXDeadZoneHit2(0), |
95 | fSigmaZDeadZoneHit2(0), |
96 | fXPassDeadZoneHits(0), |
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97 | fUseTGeoInTracker(0), |
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98 | fAllowSharedClusters(kTRUE), |
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99 | fClusterErrorsParam(1), |
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100 | fExtendedEtaAcceptance(kFALSE), |
101 | fFactorSAWindowSizes(1.), |
102 | fFindV0s(kTRUE) |
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103 | { |
104 | // |
105 | // constructor |
106 | // |
107 | SetLayersParameters(); |
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108 | for(Int_t i=0; i<AliITSgeomTGeo::kNLayers; i++) fLayersToSkip[i]=0; |
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109 | SetUseTGeoInTracker(0); |
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110 | SetAllowSharedClusters(kTRUE); |
111 | SetFindV0s(kTRUE); |
112 | SetAddVirtualClustersInDeadZone(kTRUE); |
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113 | SetUseAmplitudeInfo(kTRUE); |
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114 | SetClusterErrorsParam(1); |
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115 | } |
116 | //_____________________________________________________________________________ |
117 | AliITSRecoParam::~AliITSRecoParam() |
118 | { |
119 | // |
120 | // destructor |
121 | // |
122 | } |
123 | //_____________________________________________________________________________ |
124 | AliITSRecoParam *AliITSRecoParam::GetHighFluxParam() |
125 | { |
126 | // |
127 | // make default reconstruction parameters for hig flux env. |
128 | // |
129 | AliITSRecoParam *param = new AliITSRecoParam(); |
130 | |
131 | param->fMaxSnp = 0.95; |
132 | |
133 | param->fNSigmaYLayerForRoadY = 4.; |
134 | param->fNSigmaRoadY = 7.5; |
135 | param->fNSigmaZLayerForRoadZ = 4.; |
136 | param->fNSigmaRoadZ = 7.5; |
137 | |
138 | param->fNSigma2RoadZC = 60.; //7.75^2 |
139 | param->fNSigma2RoadYC = 60.; //7.75^2 |
140 | param->fNSigma2RoadZNonC = 50.; //7.07^2 |
141 | param->fNSigma2RoadYNonC = 50.; //7.07^2 |
142 | |
143 | param->fMaxChi2PerCluster[0] = 11.; //7 |
144 | param->fMaxChi2PerCluster[1] = 12.; //5 |
145 | param->fMaxChi2PerCluster[2] = 12.; //8 |
146 | param->fMaxChi2PerCluster[3] = 5.; //8 |
147 | param->fMaxChi2PerCluster[4] = 12.; //6.5 |
148 | |
149 | param->fMaxNormChi2NonC[0] = 7.; |
150 | param->fMaxNormChi2NonC[1] = 8.; |
151 | param->fMaxNormChi2NonC[2] = 8.; |
152 | param->fMaxNormChi2NonC[3] = 11.; |
153 | param->fMaxNormChi2NonC[4] = 14.; |
154 | param->fMaxNormChi2NonC[5] = 25.; |
155 | |
156 | param->fMaxNormChi2C[0] = 11.; |
157 | param->fMaxNormChi2C[1] = 13.; |
158 | param->fMaxNormChi2C[2] = 15.; |
159 | param->fMaxNormChi2C[3] = 18.; |
160 | param->fMaxNormChi2C[4] = 30.; |
161 | param->fMaxNormChi2C[5] = 35.; |
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162 | |
163 | param->fMaxNormChi2NonCForHypothesis = 7.; |
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164 | |
165 | param->fMaxChi2 = 35.; |
166 | |
167 | param->fMaxChi2s[0] = 25.; //40 |
168 | param->fMaxChi2s[1] = 25.; //40 |
169 | param->fMaxChi2s[2] = 25.; //40 |
170 | param->fMaxChi2s[3] = 25.; //40 |
171 | param->fMaxChi2s[4] = 40.; //40 |
172 | param->fMaxChi2s[5] = 50.; //40 |
173 | |
174 | param->fMaxRoad = 6.; |
175 | |
176 | // not used |
177 | param->fMaxChi2In = 16.; |
178 | |
179 | param->fMaxChi2sR[0] = 10.; |
180 | param->fMaxChi2sR[1] = 10.; |
181 | param->fMaxChi2sR[2] = 10.; |
182 | param->fMaxChi2sR[3] = 10.; |
183 | param->fMaxChi2sR[4] = 30.; |
184 | param->fMaxChi2sR[5] = 40.; |
185 | |
186 | param->fChi2PerCluster = 9.; |
187 | // not used |
188 | |
189 | param->fXV = 0.; |
190 | param->fYV = 0.; |
191 | param->fZV = 0.; |
192 | param->fSigmaXV = 0.0050; |
193 | param->fSigmaYV = 0.0050; |
194 | param->fSigmaZV = 0.0100; |
195 | |
196 | param->fVertexCut = 25.; |
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197 | |
198 | param->fMaxDZforPrimTrk = 0.4; |
199 | param->fMaxDZToUseConstraint = 3.; |
200 | |
201 | param->fMaxDforV0dghtrForProlongation = 30.; |
202 | param->fMaxDForProlongation = 10.; |
203 | param->fMaxDZForProlongation = 20.; |
204 | param->fMinPtForProlongation = 0.120; |
205 | |
206 | param->fZWindowDeadZone = 2.0; |
207 | param->fSigmaXDeadZoneHit2 = 0.004/12.; |
208 | param->fSigmaZDeadZoneHit2 = 0.001/12.; |
209 | param->fXPassDeadZoneHits = 0.018; |
210 | |
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211 | |
212 | return param; |
213 | } |
214 | //_____________________________________________________________________________ |
215 | AliITSRecoParam *AliITSRecoParam::GetLowFluxParam() |
216 | { |
217 | // |
218 | // make default reconstruction parameters for low flux env. |
219 | // |
220 | return GetHighFluxParam(); |
221 | } |
222 | //_____________________________________________________________________________ |
223 | AliITSRecoParam *AliITSRecoParam::GetCosmicTestParam() |
224 | { |
225 | // |
226 | // make default reconstruction parameters for cosmics |
227 | // |
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228 | AliITSRecoParam *param = new AliITSRecoParam(); |
229 | |
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230 | // larger seach windows for SA (in case of large misalignments) |
231 | param->SetFactorSAWindowSizes(3.); |
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232 | |
233 | param->fMaxSnp = 0.95; |
234 | |
235 | param->fNSigmaYLayerForRoadY = 4.; |
236 | param->fNSigmaRoadY = 7.5; |
237 | param->fNSigmaZLayerForRoadZ = 4.; |
238 | param->fNSigmaRoadZ = 7.5; |
239 | |
240 | param->fNSigma2RoadZC = 60.; //7.75^2 |
241 | param->fNSigma2RoadYC = 60.; //7.75^2 |
242 | param->fNSigma2RoadZNonC = 50.; //7.07^2 |
243 | param->fNSigma2RoadYNonC = 50.; //7.07^2 |
244 | |
245 | param->fMaxChi2PerCluster[0] = 11.; //7 |
246 | param->fMaxChi2PerCluster[1] = 12.; //5 |
247 | param->fMaxChi2PerCluster[2] = 12.; //8 |
248 | param->fMaxChi2PerCluster[3] = 5.; //8 |
249 | param->fMaxChi2PerCluster[4] = 12.; //6.5 |
250 | |
251 | param->fMaxNormChi2NonC[0] = 7.; |
252 | param->fMaxNormChi2NonC[1] = 8.; |
253 | param->fMaxNormChi2NonC[2] = 8.; |
254 | param->fMaxNormChi2NonC[3] = 11.; |
255 | param->fMaxNormChi2NonC[4] = 14.; |
256 | param->fMaxNormChi2NonC[5] = 25.; |
257 | |
258 | param->fMaxNormChi2C[0] = 11.; |
259 | param->fMaxNormChi2C[1] = 13.; |
260 | param->fMaxNormChi2C[2] = 15.; |
261 | param->fMaxNormChi2C[3] = 18.; |
262 | param->fMaxNormChi2C[4] = 30.; |
263 | param->fMaxNormChi2C[5] = 35.; |
264 | |
265 | param->fMaxNormChi2NonCForHypothesis = 7.; |
266 | |
267 | param->fMaxChi2 = 35.; |
268 | |
269 | param->fMaxChi2s[0] = 25.; //40 |
270 | param->fMaxChi2s[1] = 25.; //40 |
271 | param->fMaxChi2s[2] = 25.; //40 |
272 | param->fMaxChi2s[3] = 25.; //40 |
273 | param->fMaxChi2s[4] = 40.; //40 |
274 | param->fMaxChi2s[5] = 50.; //40 |
275 | |
276 | param->fMaxRoad = 6.; |
277 | |
278 | // not used |
279 | param->fMaxChi2In = 16.; |
280 | |
281 | param->fMaxChi2sR[0] = 10.; |
282 | param->fMaxChi2sR[1] = 10.; |
283 | param->fMaxChi2sR[2] = 10.; |
284 | param->fMaxChi2sR[3] = 10.; |
285 | param->fMaxChi2sR[4] = 30.; |
286 | param->fMaxChi2sR[5] = 40.; |
287 | |
288 | param->fChi2PerCluster = 9.; |
289 | // not used |
290 | |
291 | param->fXV = 0.; |
292 | param->fYV = 0.; |
293 | param->fZV = 0.; |
294 | param->fSigmaXV = 0.0050; |
295 | param->fSigmaYV = 0.0050; |
296 | param->fSigmaZV = 0.0100; |
297 | |
298 | param->fVertexCut = 25.; |
299 | |
300 | param->fMaxDZforPrimTrk = 0.4; |
301 | param->fMaxDZToUseConstraint = 3.; |
302 | |
303 | param->fMaxDforV0dghtrForProlongation = 30.; |
304 | param->fMaxDForProlongation = 10.; |
305 | param->fMaxDZForProlongation = 20.; |
306 | param->fMinPtForProlongation = 0.120; |
307 | |
308 | param->fZWindowDeadZone = 2.0; |
309 | param->fSigmaXDeadZoneHit2 = 0.004/12.; |
310 | param->fSigmaZDeadZoneHit2 = 0.001/12.; |
311 | param->fXPassDeadZoneHits = 0.018; |
312 | |
313 | |
314 | return param; |
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315 | } |
316 | //_____________________________________________________________________________ |
317 | void AliITSRecoParam::SetLayersParameters() |
318 | { |
319 | // |
320 | // number of layers and layers spatial resolutions |
321 | // |
322 | |
323 | // spatial resolutions of the detectors |
324 | // y: 12 12 38 38 20 20 micron |
325 | fSigmaY2[0]=1.44e-6; |
326 | fSigmaY2[1]=1.44e-6; |
327 | fSigmaY2[2]=1.444e-5; |
328 | fSigmaY2[3]=1.444e-5; |
329 | fSigmaY2[4]=4.0e-6; |
330 | fSigmaY2[5]=4.0e-6; |
331 | // z: 120 120 28 28 830 830 micron |
332 | fSigmaZ2[0]=1.44e-4; |
333 | fSigmaZ2[1]=1.44e-4; |
334 | fSigmaZ2[2]=7.84e-6; |
335 | fSigmaZ2[3]=7.84e-6; |
336 | fSigmaZ2[4]=6.889e-3; |
337 | fSigmaZ2[5]=6.889e-3; |
338 | |
339 | return; |
340 | } |
341 | |