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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 | // // | |
20 | // class for TPC reconstruction // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | ||
25 | #include "AliTPCReconstructor.h" | |
26 | #include "AliRunLoader.h" | |
27 | #include "AliRun.h" | |
28 | #include "AliRawReader.h" | |
29 | #include "AliTPCclustererMI.h" | |
30 | #include "AliTPCtrackerMI.h" | |
31 | #include "AliTPCpidESD.h" | |
32 | ||
33 | ||
34 | ClassImp(AliTPCReconstructor) | |
35 | ||
36 | Double_t AliTPCReconstructor::fgCtgRange = 1.05; | |
37 | Double_t AliTPCReconstructor::fgMaxSnpTracker = 0.95; // max tangent in tracker - correspond to 3 | |
38 | Double_t AliTPCReconstructor::fgMaxSnpTrack = 0.999; // tangent | |
39 | Int_t AliTPCReconstructor::fgStreamLevel = 0; // stream (debug) level | |
40 | //_____________________________________________________________________________ | |
41 | void AliTPCReconstructor::Reconstruct(AliRunLoader* runLoader) const | |
42 | { | |
43 | // reconstruct clusters | |
44 | ||
45 | AliLoader* loader = runLoader->GetLoader("TPCLoader"); | |
46 | if (!loader) { | |
47 | Error("Reconstruct", "TPC loader not found"); | |
48 | return; | |
49 | } | |
50 | loader->LoadRecPoints("recreate"); | |
51 | loader->LoadDigits("read"); | |
52 | ||
53 | AliTPCParam* param = GetTPCParam(runLoader); | |
54 | if (!param) return; | |
55 | AliTPCclustererMI clusterer(param); | |
56 | Int_t nEvents = runLoader->GetNumberOfEvents(); | |
57 | ||
58 | for (Int_t iEvent = 0; iEvent < nEvents; iEvent++) { | |
59 | runLoader->GetEvent(iEvent); | |
60 | ||
61 | TTree* treeClusters = loader->TreeR(); | |
62 | if (!treeClusters) { | |
63 | loader->MakeTree("R"); | |
64 | treeClusters = loader->TreeR(); | |
65 | } | |
66 | TTree* treeDigits = loader->TreeD(); | |
67 | if (!treeDigits) { | |
68 | Error("Reconstruct", "Can't get digits tree !"); | |
69 | return; | |
70 | } | |
71 | ||
72 | clusterer.SetInput(treeDigits); | |
73 | clusterer.SetOutput(treeClusters); | |
74 | clusterer.Digits2Clusters(); | |
75 | ||
76 | loader->WriteRecPoints("OVERWRITE"); | |
77 | } | |
78 | ||
79 | loader->UnloadRecPoints(); | |
80 | loader->UnloadDigits(); | |
81 | } | |
82 | ||
83 | //_____________________________________________________________________________ | |
84 | void AliTPCReconstructor::Reconstruct(AliRunLoader* runLoader, | |
85 | AliRawReader* rawReader) const | |
86 | { | |
87 | // reconstruct clusters from raw data | |
88 | ||
89 | AliLoader* loader = runLoader->GetLoader("TPCLoader"); | |
90 | if (!loader) { | |
91 | Error("Reconstruct", "TPC loader not found"); | |
92 | return; | |
93 | } | |
94 | loader->LoadRecPoints("recreate"); | |
95 | ||
96 | AliTPCParam* param = GetTPCParam(runLoader); | |
97 | if (!param) return; | |
98 | AliTPCclustererMI clusterer(param); | |
99 | ||
100 | Int_t iEvent = 0; | |
101 | while (rawReader->NextEvent()) { | |
102 | runLoader->GetEvent(iEvent++); | |
103 | ||
104 | TTree* treeClusters = loader->TreeR(); | |
105 | if (!treeClusters) { | |
106 | loader->MakeTree("R"); | |
107 | treeClusters = loader->TreeR(); | |
108 | } | |
109 | ||
110 | clusterer.SetOutput(treeClusters); | |
111 | clusterer.Digits2Clusters(rawReader); | |
112 | ||
113 | loader->WriteRecPoints("OVERWRITE"); | |
114 | } | |
115 | ||
116 | loader->UnloadRecPoints(); | |
117 | } | |
118 | ||
119 | //_____________________________________________________________________________ | |
120 | AliTracker* AliTPCReconstructor::CreateTracker(AliRunLoader* runLoader) const | |
121 | { | |
122 | // create a TPC tracker | |
123 | ||
124 | AliTPCParam* param = GetTPCParam(runLoader); | |
125 | if (!param) return NULL; | |
126 | return new AliTPCtrackerMI(param); | |
127 | } | |
128 | ||
129 | //_____________________________________________________________________________ | |
130 | void AliTPCReconstructor::FillESD(AliRunLoader* /*runLoader*/, | |
131 | AliESD* esd) const | |
132 | { | |
133 | // make PID | |
134 | ||
135 | Double_t parTPC[] = {47., 0.10, 10.}; | |
136 | AliTPCpidESD tpcPID(parTPC); | |
137 | tpcPID.MakePID(esd); | |
138 | } | |
139 | ||
140 | ||
141 | //_____________________________________________________________________________ | |
142 | AliTPCParam* AliTPCReconstructor::GetTPCParam(AliRunLoader* runLoader) const | |
143 | { | |
144 | // get the TPC parameters | |
145 | ||
146 | TDirectory* saveDir = gDirectory; | |
147 | runLoader->CdGAFile(); | |
148 | ||
149 | AliTPCParam* param = (AliTPCParam*) gDirectory->Get("75x40_100x60_150x60"); | |
150 | if (!param) Error("GetTPCParam", "no TPC parameters found"); | |
151 | ||
152 | saveDir->cd(); | |
153 | return param; | |
154 | } |