]>
Commit | Line | Data |
---|---|---|
e58e15dc | 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: AliTRDTriggerL1.cxx 31904 2009-04-08 16:42:03Z cblume $ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // TRD trigger L1 (GTU) simulation steering // | |
21 | // currently the Trigger() method calls the GTU tracking simulation and // | |
22 | // runs two example triggers, namely on a single high pt particle and // | |
23 | // on a jet. // | |
24 | // // | |
25 | /////////////////////////////////////////////////////////////////////////////// | |
26 | ||
27 | ||
28 | #include "TObjArray.h" | |
29 | ||
30 | #include "AliLog.h" | |
31 | #include "AliTriggerInput.h" | |
32 | #include "AliRunLoader.h" | |
33 | #include "AliLoader.h" | |
34 | ||
35 | #include "AliTRDTriggerL1.h" | |
36 | #include "AliTRDgtuSim.h" | |
37 | #include "AliTRDtrackGTU.h" | |
38 | ||
39 | AliTRDTriggerL1::AliTRDTriggerL1() | |
40 | { | |
41 | SetName("TRD"); | |
42 | } | |
43 | ||
44 | AliTRDTriggerL1::~AliTRDTriggerL1() | |
45 | { | |
46 | ||
47 | } | |
48 | ||
49 | void AliTRDTriggerL1::CreateInputs() | |
50 | { | |
36dc3337 | 51 | // create the trigger inputs for TRD |
52 | ||
e58e15dc | 53 | if (fInputs.GetEntriesFast() > 0) |
54 | return; | |
55 | ||
e43b478f | 56 | fInputs.AddLast(new AliTriggerInput("1HSH", "TRD", 1)); |
57 | fInputs.AddLast(new AliTriggerInput("1HJT", "TRD", 1)); | |
e58e15dc | 58 | } |
59 | ||
60 | void AliTRDTriggerL1::Trigger() | |
61 | { | |
36dc3337 | 62 | // run the trigger algorithms |
63 | ||
e58e15dc | 64 | AliRunLoader *runLoader = AliRunLoader::Instance(); |
65 | if (!runLoader) | |
66 | return; | |
67 | AliLoader *trdLoader = runLoader->GetLoader("TRDLoader"); | |
68 | if (!trdLoader) | |
69 | return; | |
70 | ||
71 | // now running the GTU tracking; | |
72 | AliTRDgtuSim *gtusim = new AliTRDgtuSim(); | |
73 | gtusim->RunGTU(trdLoader, 0x0); | |
74 | gtusim->WriteTracksToLoader(); | |
75 | ||
76 | TTree *trackTree = trdLoader->GetDataLoader("gtutracks")->Tree(); | |
77 | if (!trackTree) { | |
78 | AliDebug(1,"Did not find track tree"); | |
79 | return; | |
80 | } | |
81 | TBranch *branch = trackTree->GetBranch("TRDtrackGTU"); | |
20a6e9c2 | 82 | AliDebug(1,Form("TRD trigger: found %lld tracks", trackTree->GetEntriesFast())); |
e58e15dc | 83 | |
84 | // trigger thresholds should go elsewhere | |
85 | Float_t ptThreshold1 = 2; | |
86 | Float_t ptThreshold2 = 9.9; | |
87 | Int_t trackThreshold1 = 6; | |
88 | Int_t trackThreshold2 = 2; | |
89 | ||
90 | // trigger algorithms to come, e.g. | |
36dc3337 | 91 | Bool_t triggeredHighPt = kFALSE; |
92 | Bool_t triggeredJet = kFALSE; | |
e58e15dc | 93 | |
94 | if (branch) { | |
95 | AliTRDtrackGTU *trk = 0x0; | |
96 | branch->SetAddress(&trk); | |
97 | ||
98 | // high pt trigger | |
99 | for (Int_t iTrack = 0; iTrack < trackTree->GetEntriesFast(); iTrack++) { | |
100 | trackTree->GetEntry(iTrack); | |
101 | if (TMath::Abs(trk->GetPt()) > 3.0) { | |
102 | AliDebug(1, Form("Found track in sector %2i, stack %i with pt = %3.1f, triggered", | |
103 | trk->GetSector(), trk->GetStack(), trk->GetPt())); | |
36dc3337 | 104 | triggeredHighPt = kTRUE; |
e58e15dc | 105 | } |
106 | } | |
107 | ||
108 | // jet trigger | |
109 | Int_t nTracks1[90]; // tracks above lower pt threshold | |
110 | Int_t nTracks2[90]; // tracks above higher pt threshold | |
111 | for (Int_t iTrack = 0; iTrack < trackTree->GetEntriesFast(); iTrack++) { | |
112 | trackTree->GetEntry(iTrack); | |
113 | if (TMath::Abs(trk->GetPt()) > ptThreshold1) | |
114 | nTracks1[5*trk->GetSector() + trk->GetStack()]++; | |
115 | if (TMath::Abs(trk->GetPt()) > ptThreshold2) | |
116 | nTracks2[5*trk->GetSector() + trk->GetStack()]++; | |
117 | } | |
118 | for (Int_t iStack = 0; iStack < 90; iStack++) { | |
119 | if ((nTracks1[iStack] >= trackThreshold1) || (nTracks2[iStack] >= trackThreshold2)) | |
36dc3337 | 120 | triggeredJet = kTRUE; |
e58e15dc | 121 | } |
122 | } | |
123 | else { | |
124 | AliWarning("GTU Branch not found"); | |
125 | } | |
126 | ||
36dc3337 | 127 | if (triggeredHighPt) { |
e58e15dc | 128 | AliInfo("Fired high-pt trigger"); |
e43b478f | 129 | SetInput("1HSH"); |
e58e15dc | 130 | } |
131 | ||
36dc3337 | 132 | if (triggeredJet) { |
e58e15dc | 133 | AliInfo("Fired jet trigger"); |
e43b478f | 134 | SetInput("1HJT"); |
e58e15dc | 135 | } |
136 | ||
137 | // cleaning up | |
138 | delete gtusim; | |
139 | } |