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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: 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 | { | |
51 | if (fInputs.GetEntriesFast() > 0) | |
52 | return; | |
53 | ||
54 | fInputs.AddLast(new AliTriggerInput("TRD_HIGHPT_L1", "TRD", 1)); | |
55 | fInputs.AddLast(new AliTriggerInput("TRD_JET_L1", "TRD", 1)); | |
56 | } | |
57 | ||
58 | void AliTRDTriggerL1::Trigger() | |
59 | { | |
60 | AliRunLoader *runLoader = AliRunLoader::Instance(); | |
61 | if (!runLoader) | |
62 | return; | |
63 | AliLoader *trdLoader = runLoader->GetLoader("TRDLoader"); | |
64 | if (!trdLoader) | |
65 | return; | |
66 | ||
67 | // now running the GTU tracking; | |
68 | AliTRDgtuSim *gtusim = new AliTRDgtuSim(); | |
69 | gtusim->RunGTU(trdLoader, 0x0); | |
70 | gtusim->WriteTracksToLoader(); | |
71 | ||
72 | TTree *trackTree = trdLoader->GetDataLoader("gtutracks")->Tree(); | |
73 | if (!trackTree) { | |
74 | AliDebug(1,"Did not find track tree"); | |
75 | return; | |
76 | } | |
77 | TBranch *branch = trackTree->GetBranch("TRDtrackGTU"); | |
78 | AliDebug(1,Form("TRD trigger: found %i tracks", trackTree->GetEntriesFast())); | |
79 | ||
80 | // trigger thresholds should go elsewhere | |
81 | Float_t ptThreshold1 = 2; | |
82 | Float_t ptThreshold2 = 9.9; | |
83 | Int_t trackThreshold1 = 6; | |
84 | Int_t trackThreshold2 = 2; | |
85 | ||
86 | // trigger algorithms to come, e.g. | |
87 | Bool_t triggered_highpt = kFALSE; | |
88 | Bool_t triggered_jet = kFALSE; | |
89 | ||
90 | if (branch) { | |
91 | AliTRDtrackGTU *trk = 0x0; | |
92 | branch->SetAddress(&trk); | |
93 | ||
94 | // high pt trigger | |
95 | for (Int_t iTrack = 0; iTrack < trackTree->GetEntriesFast(); iTrack++) { | |
96 | trackTree->GetEntry(iTrack); | |
97 | if (TMath::Abs(trk->GetPt()) > 3.0) { | |
98 | AliDebug(1, Form("Found track in sector %2i, stack %i with pt = %3.1f, triggered", | |
99 | trk->GetSector(), trk->GetStack(), trk->GetPt())); | |
100 | triggered_highpt = kTRUE; | |
101 | } | |
102 | } | |
103 | ||
104 | // jet trigger | |
105 | Int_t nTracks1[90]; // tracks above lower pt threshold | |
106 | Int_t nTracks2[90]; // tracks above higher pt threshold | |
107 | for (Int_t iTrack = 0; iTrack < trackTree->GetEntriesFast(); iTrack++) { | |
108 | trackTree->GetEntry(iTrack); | |
109 | if (TMath::Abs(trk->GetPt()) > ptThreshold1) | |
110 | nTracks1[5*trk->GetSector() + trk->GetStack()]++; | |
111 | if (TMath::Abs(trk->GetPt()) > ptThreshold2) | |
112 | nTracks2[5*trk->GetSector() + trk->GetStack()]++; | |
113 | } | |
114 | for (Int_t iStack = 0; iStack < 90; iStack++) { | |
115 | if ((nTracks1[iStack] >= trackThreshold1) || (nTracks2[iStack] >= trackThreshold2)) | |
116 | triggered_jet = kTRUE; | |
117 | } | |
118 | } | |
119 | else { | |
120 | AliWarning("GTU Branch not found"); | |
121 | } | |
122 | ||
123 | if (triggered_highpt) { | |
124 | AliInfo("Fired high-pt trigger"); | |
125 | SetInput("TRD_HIGHPT_L1"); | |
126 | } | |
127 | ||
128 | if (triggered_jet) { | |
129 | AliInfo("Fired jet trigger"); | |
130 | SetInput("TRD_JET_L1"); | |
131 | } | |
132 | ||
133 | // cleaning up | |
134 | delete gtusim; | |
135 | } |